* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            overflow-x: hidden;
        }
         /* ===== WHATSAPP BANNER ===== */
        .whatsapp-banner {
            background: linear-gradient(135deg, #2a5298 0%, #2a5298 100%);
            color: whitesmoke;
            padding: 0 0; /* use fixed height for consistent offset */
            height: 56px;
            display: flex;
            align-items: center;
            box-shadow: 0 4px 12px #2a5298;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1100;
            width: 100%;
        }

        .banner-content {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
            position: relative;
        }
        
        .banner-close-btn {
            background: transparent;
            border: none;
            color: white;
            cursor: pointer;
            padding: 0.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: all 0.3s ease;
            margin-left: auto;
            opacity: 0.8;
        }
        
        .banner-close-btn:hover {
            background: rgba(255, 255, 255, 0.2);
            opacity: 1;
            transform: rotate(90deg);
        }
        
        .banner-close-btn svg {
            display: block;
        }

        .whatsapp-icon {
            width: 24px;
            height: 24px;
            animation: whatsappPulse 2s ease-in-out infinite;
        }

        @keyframes whatsappPulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.1); }
        }

        .banner-text {
            font-weight: 500;
            font-size: 0.95rem;
        }

        .join-whatsapp-btn {
            background: white;
            color: #25d366;
            padding: 0.5rem 1.2rem;
            border-radius: 20px;
            text-decoration: none;
            font-weight: 700;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .join-whatsapp-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }

        .whatsapp-logo {
            width: 18px;
            height: 18px;
        }
        /* Header Styles */
        header {
            background: linear-gradient(135deg, #0d2847 0%, #1e3c72 50%, #2a5298 100%);
            color: white;
            padding: 1rem 0;
            position: fixed;
            width: 100%;
            top: 56px; /* offset for fixed WhatsApp banner */
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0,0,0,0.25);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 2px solid rgba(255, 215, 0, 0.3);
        }

        /* Tablet adjustments */
        @media (max-width: 768px) {
            .whatsapp-banner { height: 52px; }
            header { top: 52px; }
        }

        /* Mobile adjustments */
        @media (max-width: 480px) {
            .whatsapp-banner { height: 48px; }
            header { top: 48px; }
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .header-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .logo::before {
            content: "🧠";
            font-size: 2rem;
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        
        .nav-menu a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            position: relative;
        }
        
        .nav-menu a:hover {
            color: #ffd700;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }
        
        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 80%;
            height: 2px;
            background: #ffd700;
            transition: transform 0.3s ease;
        }
        
        .nav-menu a:hover::after {
            transform: translateX(-50%) scaleX(1);
        }
        
        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        
        .mobile-menu-toggle span {
            width: 25px;
            height: 3px;
            background: white;
            transition: 0.3s;
        }
        
        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, #0d2847 0%, #1e3c72 50%, #2a5298 100%);
            color: white;
            padding: 130px 0 90px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.08)"/><circle cx="80" cy="40" r="3" fill="rgba(255,255,255,0.05)"/><circle cx="40" cy="80" r="1" fill="rgba(255,255,255,0.08)"/></svg>');
        }
        
        .hero-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            position: relative;
            z-index: 1;
        }
        
        /* Manifesto Badge Styling */
        .hero-branding {
            margin-bottom: 1.5rem;
        }
        
        .hero-manifesto-badge {
            display: inline-flex;
            flex-direction: column;
            align-items: center;
            background: linear-gradient(135deg, rgba(255,215,0,0.95), rgba(255,193,7,0.95));
            padding: 1rem 2rem;
            border-radius: 16px;
            box-shadow: 0 8px 32px rgba(255,215,0,0.3);
            border: 2px solid rgba(255,255,255,0.3);
            animation: badge-glow 2s ease-in-out infinite;
        }
        
        @keyframes badge-glow {
            0%, 100% { box-shadow: 0 8px 32px rgba(255,215,0,0.3); }
            50% { box-shadow: 0 8px 40px rgba(255,215,0,0.5); }
        }
        
        .manifesto-text {
            font-size: 0.9rem;
            color: #1e3c72;
            font-weight: 600;
            letter-spacing: 0.5px;
        }
        
        .manifesto-highlight {
            font-size: 1.8rem;
            font-weight: 900;
            color: #0d2847;
            letter-spacing: 2px;
            text-transform: uppercase;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
        }
        
        .manifesto-sub {
            font-size: 1rem;
            color: #1e3c72;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
        }
        
        .hero-eyebrow { display:inline-block; padding:.4rem .8rem; border-radius:999px; background:rgba(255,255,255,0.15); -webkit-backdrop-filter:blur(6px); backdrop-filter:blur(6px); font-weight:600; letter-spacing:.3px; font-size: 0.95rem; }
        .hero-title { font-size: clamp(2rem, 4vw + 1rem, 3.2rem); margin: 1rem auto .5rem; max-width: 1200px; line-height: 1.15; font-weight: 800; }
        .hero-subtitle { opacity:.95; max-width: 850px; margin: 0 auto 1.5rem; font-size: 1.15rem; font-style: italic; }
        .hero-search { display:flex; gap:.6rem; max-width:720px; margin:1rem auto 1.5rem; }
        .hero-search-input { flex:1; padding:1rem 1.2rem; border-radius:12px; border:none; outline:none; font-size:1rem; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
        .hero-search-btn { padding:.95rem 1.3rem; border-radius:12px; border:none; background:#00d4ff; color:#0b1230; font-weight:800; cursor:pointer; transition: all 0.3s ease; }
        .hero-search-btn:hover { background:#00b8e6; transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0,212,255,0.4); }
        .hero-ctas { display:flex; gap:.8rem; justify-content:center; flex-wrap:wrap; margin:.5rem 0 1rem; }
        .cta-button.secondary { background: rgba(255,255,255,0.15); border: 2px solid rgba(255,255,255,.3); color: #fff; }
        .cta-link { text-decoration: none; }
        .hero-pills { display:flex; flex-wrap:wrap; gap:.6rem; justify-content:center; margin: 1rem 0 2rem; }
        .pill { padding:.45rem .8rem; border-radius:999px; background: rgba(255,255,255,0.12); border:1px solid rgba(255,255,255,.2); font-weight:600; font-size:.9rem; transition: all 0.3s ease; }
        .pill:hover { background: rgba(255,255,255,0.2); transform: translateY(-2px); }
        .hero-stats { display:flex; gap:1rem; justify-content:center; flex-wrap:wrap; margin-top:.5rem; }
        .stat-box { background: rgba(255,255,255,.1); border:1px solid rgba(255,255,255,.2); padding:.9rem 1.2rem; border-radius:14px; min-width:160px; transition: all 0.3s ease; }
        .stat-box:hover { background: rgba(255,255,255,.15); transform: translateY(-3px); box-shadow: 0 6px 20px rgba(0,0,0,0.15); }
        .stat-number { font-size:1.6rem; font-weight:800; color: #00d4ff; }
        .stat-label { opacity:.9; font-weight:600; font-size: 0.9rem; }
        .hero-apps { margin-top:1.2rem; }
        .app-note { opacity:.9; margin-bottom:.4rem; font-weight: 600; }
        .app-badges { display:flex; gap:.6rem; justify-content:center; flex-wrap:wrap; }
        .app-badge { background:white; color:#0b1230; font-weight:800; padding:.7rem 1rem; border-radius:12px; text-decoration:none; transition: all 0.3s ease; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
        .app-badge:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(0,0,0,0.2); background: #f0f0f0; }
        
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1rem;
            font-weight: 700;
            line-height: 1.2;
        }
        
        .hero p {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }
        
        .cta-button {
            display: inline-block;
            background: #ffd700;
            color: #333;
            padding: 15px 30px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: bold;
            font-size: 1.1rem;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
            cursor: pointer;
            border: none;
        }
        
        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.3);
        }
        
        /* Container */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }
        
        /* Features Section */
        .features {
            padding: 100px 0;
            background: linear-gradient(180deg, #f8f9fa 0%, #ffffff 100%);
            position: relative;
            overflow: hidden;
        }
        
        .features::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 300px;
            background: radial-gradient(ellipse at top, rgba(102, 126, 234, 0.1), transparent);
            pointer-events: none;
        }
        
        .features-header {
            text-align: center;
            margin-bottom: 4rem;
            position: relative;
            z-index: 1;
        }
        
        .features-badge {
            display: inline-block;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 1rem;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
        }
        
        .section-title {
            text-align: center;
            font-size: 3rem;
            margin-bottom: 1rem;
            color: #1e3c72;
            font-weight: 800;
            line-height: 1.2;
        }
        
        .features-subtitle {
            font-size: 1.1rem;
            color: #666;
            max-width: 700px;
            margin: 0 auto;
            line-height: 1.6;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
            position: relative;
            z-index: 1;
        }
        
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }
        
        .feature-card {
            background: white;
            padding: 2.5rem;
            border-radius: 20px;
            text-align: center;
            box-shadow: 0 10px 40px rgba(0,0,0,0.08);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
            border: 2px solid transparent;
        }
        
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #667eea, #764ba2);
            transform: scaleX(0);
            transition: transform 0.4s ease;
        }
        
        .feature-card:hover::before {
            transform: scaleX(1);
        }
        
        .feature-card:hover {
            transform: translateY(-10px) scale(1.02);
            box-shadow: 0 20px 60px rgba(0,0,0,0.15);
            border-color: rgba(102, 126, 234, 0.3);
        }
        
        .feature-icon {
            font-size: 4rem;
            margin-bottom: 1.5rem;
            display: inline-block;
            animation: float 3s ease-in-out infinite;
        }
        
        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-10px); }
        }
        
        .feature-card h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: #1e3c72;
            font-weight: 700;
        }
        
        .feature-card p {
            color: #666;
            line-height: 1.7;
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
        }
        
        .feature-card .feature-badge {
            display: inline-block;
            background: rgba(102, 126, 234, 0.1);
            color: #667eea;
            padding: 0.4rem 1rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
        }
        
        /* Gradient variations for cards */
        .gradient-purple:hover { background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%); }
        .gradient-blue:hover { background: linear-gradient(135deg, #4facfe15 0%, #00f2fe15 100%); }
        .gradient-green:hover { background: linear-gradient(135deg, #43e97b15 0%, #38f9d715 100%); }
        .gradient-orange:hover { background: linear-gradient(135deg, #fa709a15 0%, #fee14015 100%); }
        .gradient-pink:hover { background: linear-gradient(135deg, #f093fb15 0%, #f5576c15 100%); }
        .gradient-teal:hover { background: linear-gradient(135deg, #30cfd015 0%, #330867 15 100%); }
        
        /* Exam Selection Section */
        .exam-selection {
            padding: 100px 0;
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            color: white;
            position: relative;
            overflow: hidden;
        }
        
        .exam-selection::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255,255,255,0.1), transparent);
            border-radius: 50%;
        }
        
        .exam-selection::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255,255,255,0.08), transparent);
            border-radius: 50%;
        }
        
        .exam-selection-header {
            text-align: center;
            margin-bottom: 4rem;
            position: relative;
            z-index: 1;
        }
        
        .exam-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            color: white;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 1rem;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.3);
        }
        
        .exam-selection .section-title {
            color: white;
            font-size: 3rem;
            margin-bottom: 1rem;
        }
        
        .exam-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 700px;
            margin: 0 auto;
            line-height: 1.6;
        }
        
        .notice-banner {
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 10px;
            padding: 1rem;
            margin: 2rem auto 3rem;
            max-width: 800px;
            display: flex;
            align-items: center;
            gap: 1rem;
            backdrop-filter: blur(10px);
        }
        
        .notice-icon {
            font-size: 1.5rem;
            flex-shrink: 0;
        }
        
        .notice-text {
            font-size: 0.95rem;
            line-height: 1.5;
        }
        
        .exam-cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }
        
        .exam-cards-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0.5rem;
            max-width: 1400px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }
        
        @media (max-width: 1200px) {
            .exam-cards-container {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 768px) {
            .exam-cards-container {
                grid-template-columns: 1fr;
            }
        }

        .exam-card {
            background: white;
            color: #333;
            padding: 2.5rem 2rem;
            border-radius: 24px;
            text-align: center;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
            box-shadow: 0 10px 40px rgba(0,0,0,0.15);
            border: 2px solid transparent;
        }
        
        .exam-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, #667eea, #764ba2);
            transform: scaleX(0);
            transition: transform 0.4s ease;
        }
        
        .exam-card:hover::before {
            transform: scaleX(1);
        }
        
        .exam-card:hover {
            transform: translateY(-15px) scale(1.03);
            box-shadow: 0 25px 60px rgba(0,0,0,0.25);
            border-color: rgba(102, 126, 234, 0.3);
        }
        
        .exam-card-badge {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: rgba(102, 126, 234, 0.1);
            color: #667eea;
            padding: 0.4rem 1rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        
        .exam-card-badge.popular {
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            color: white;
        }
        
        .neet-card::before {
            background: linear-gradient(90deg, #f093fb, #f5576c);
        }
        
        .foundation-card::before {
            background: linear-gradient(90deg, #4facfe, #00f2fe);
        }
        
        .exam-icon {
            font-size: 4rem;
            margin-bottom: 1.5rem;
            display: inline-block;
            animation: float 3s ease-in-out infinite;
        }
        
        .exam-card h3 {
            font-size: 1.6rem;
            margin-bottom: 1rem;
            color: #1e3c72;
            font-weight: 700;
        }
        
        .exam-desc {
            font-size: 0.95rem;
            margin-bottom: 1.5rem;
            color: #666;
            line-height: 1.6;
            min-height: 50px;
        }
        
        .exam-stats {
            display: flex;
            justify-content: space-around;
            margin: 1.5rem 0;
            padding: 1rem 0;
            border-top: 1px solid #f0f0f0;
            border-bottom: 1px solid #f0f0f0;
        }
        
        .stat-item {
            text-align: center;
        }
        
        .stat-value {
            font-size: 1.8rem;
            font-weight: 800;
            color: #667eea;
            margin-bottom: 0.25rem;
        }
        
        .stat-label {
            font-size: 0.8rem;
            color: #f7f6f6;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        
        .exam-features {
            list-style: none;
            text-align: left;
            margin: 1.5rem 0;
            padding: 0;
        }
        
        .exam-features li {
            padding: 0.5rem 0;
            color: #555;
            font-size: 0.95rem;
        }
        
        .exam-select-btn {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
        }
        
        .exam-select-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
        }
        
        .exam-select-btn:active {
            transform: translateY(0);
        }
        
        .btn-arrow {
            font-size: 1.2rem;
            transition: transform 0.3s ease;
        }
        
        .exam-select-btn:hover .btn-arrow {
            transform: translateX(5px);
        }
        
        .neet-card .exam-select-btn {
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            box-shadow: 0 4px 15px rgba(240, 147, 251, 0.3);
        }
        
        .neet-card .exam-select-btn:hover {
            box-shadow: 0 8px 25px rgba(240, 147, 251, 0.5);
        }
        
        .jee-card::before {
            background: linear-gradient(90deg, #4facfe, #00f2fe);
        }
        
        .jee-card .stat-value {
            color: #4facfe;
        }
        
        .jee-card .exam-select-btn {
            background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
            box-shadow: 0 4px 15px rgba(79, 172, 254, 0.3);
        }
        
        .jee-card .exam-select-btn:hover {
            box-shadow: 0 8px 25px rgba(79, 172, 254, 0.5);
        }

        /* Admin Panel Styles */
        .admin-section {
            display: none;
            padding: 120px 0 80px;
            background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
            color: white;
            min-height: 100vh;
        }
        
        .admin-section.active {
            display: block;
        }
        
        .admin-tabs {
            display: flex;
            justify-content: center;
            margin-bottom: 3rem;
            gap: 1rem;
        }
        
        .admin-tab {
            padding: 1rem 2rem;
            background: rgba(255, 255, 255, 0.1);
            border: none;
            color: white;
            border-radius: 25px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .admin-tab.active {
            background: rgba(255, 255, 255, 0.3);
        }
        
        .admin-content {
            background: rgba(255, 255, 255, 0.95);
            color: #333;
            padding: 3rem;
            border-radius: 20px;
            max-width: 800px;
            margin: 0 auto;
        }
        
        .file-upload-area {
            border: 3px dashed #667eea;
            border-radius: 15px;
            padding: 3rem;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-bottom: 2rem;
        }
        
        .file-upload-area:hover {
            border-color: #5a67d8;
            background: rgba(102, 126, 234, 0.05);
        }

        /* Exam Interface */
        .exam-interface {
            display: none;
            min-height: 100vh;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        }
        
        .exam-interface.active {
            display: block;
        }

        .exam-header {
            background: rgba(255, 255, 255, 0.1);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
        }
        
        .exam-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            color: white;
        }
        
        .timer {
            background: rgba(255, 255, 255, 0.2);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-family: monospace;
            font-size: 1.1rem;
        }
        
        .exam-content {
            display: flex;
            max-width: 1400px;
            margin: 0 auto;
            min-height: calc(100vh - 80px);
        }
        
        .question-panel {
            flex: 1;
            padding: 2rem;
            background: white;
            margin: 2rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        
        .question-text {
            font-size: 1.1rem;
            line-height: 1.7;
            margin-bottom: 2rem;
            color: #333;
        }
        
        .options-list {
            list-style: none;
            padding: 0;
        }
        
        .option-item {
            margin-bottom: 1rem;
            padding: 1rem;
            border: 2px solid #e0e6ed;
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .option-item:hover {
            border-color: #667eea;
            background: #f8f9ff;
        }
        
        .option-item.selected {
            border-color: #667eea;
            background: #667eea;
            color: white;
        }
        
        .question-controls {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #e0e6ed;
        }
        
        .nav-btn {
            padding: 0.7rem 1.5rem;
            border: 2px solid #667eea;
            background: white;
            color: #667eea;
            border-radius: 25px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .nav-btn:hover {
            background: #667eea;
            color: white;
        }
        
        .ai-solution-btn {
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            color: white;
            border: none;
            padding: 0.7rem 1.5rem;
            border-radius: 25px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .ai-solution-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(240, 147, 251, 0.4);
        }
        
        .question-palette {
            width: 300px;
            background: rgba(255, 255, 255, 0.1);
            padding: 2rem;
            margin: 2rem 2rem 2rem 0;
            border-radius: 15px;
            color: white;
        }
        
        .question-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 0.5rem;
            margin-bottom: 2rem;
        }
        
        .question-bubble {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
            background: rgba(255, 255, 255, 0.2);
            color: white;
        }
        
        .question-bubble.current {
            background: white;
            color: #667eea;
        }
        
        .question-bubble.answered {
            background: #4CAF50;
        }
        
        .question-bubble.marked {
            background: #ff9800;
        }

        /* Results Section */
        .results-section {
            display: none;
            padding: 120px 0 80px;
            background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
            color: white;
            min-height: 100vh;
        }
        
        .results-section.active {
            display: block;
        }
        
        .results-header {
            text-align: center;
            margin-bottom: 3rem;
        }
        
        .score-card {
            background: rgba(255, 255, 255, 0.95);
            color: #333;
            padding: 3rem;
            border-radius: 20px;
            text-align: center;
            margin-bottom: 2rem;
        }
        
        .score-number {
            font-size: 4rem;
            font-weight: bold;
            color: #4CAF50;
            margin-bottom: 1rem;
        }
        
        .results-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        
        .stat-card {
            background: rgba(255, 255, 255, 0.1);
            padding: 2rem;
            border-radius: 15px;
            text-align: center;
        }
        
        .ai-explanation {
            background: rgba(255, 255, 255, 0.95);
            color: #333;
            padding: 2rem;
            border-radius: 15px;
            margin-top: 2rem;
        }
        
        .explanation-item {
            margin-bottom: 1.5rem;
            padding: 1rem;
            border-left: 4px solid #667eea;
            background: #f8f9ff;
        }
        
        /* Modal Styles */
        .modal {
            display: none;
            position: fixed;
            z-index: 2000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
            backdrop-filter: blur(5px);
        }
        
        .modal-content {
            background-color: white;
            margin: 5% auto;
            padding: 2rem;
            border-radius: 15px;
            width: 90%;
            max-width: 500px;
            position: relative;
        }
        
        .modal-close {
            position: absolute;
            right: 1rem;
            top: 1rem;
            font-size: 2rem;
            cursor: pointer;
            color: #999;
        }
        
        .auth-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .auth-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .auth-input {
            padding: 12px;
            border: 2px solid #e0e6ed;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }
        
        .auth-input:focus {
            outline: none;
            border-color: #667eea;
        }
        
        .auth-button {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 12px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
        }
        
        /* Loading and Message Styles */
        .loading-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            justify-content: center;
            align-items: center;
            z-index: 9999;
        }
        
        .loading-spinner {
            width: 50px;
            height: 50px;
            border: 5px solid rgba(255,255,255,0.3);
            border-top: 5px solid white;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        .message {
            position: fixed;
            top: 100px;
            left: 50%;
            transform: translateX(-50%);
            padding: 1rem 2rem;
            border-radius: 8px;
            color: white;
            font-weight: bold;
            z-index: 10000;
            animation: slideDown 0.3s ease;
        }
        
        .message.success {
            background: #4CAF50;
        }
        
        .message.error {
            background: #f44336;
        }
        
        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateX(-50%) translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateX(-50%) translateY(0);
            }
        }
        
        /* Responsive Design */
        @media (max-width: 768px) {
            .exam-cards-container {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            
            .exam-content {
                flex-direction: column;
            }
            
            .question-palette {
                width: auto;
                order: -1;
                margin: 1rem;
            }
            
            .question-grid {
                grid-template-columns: repeat(10, 1fr);
            }
            
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .results-stats {
                grid-template-columns: 1fr;
            }
        }

        .neet-card .exam-select-btn {
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
        }
        
        .foundation-card .exam-select-btn {
            background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
        }

        /* Auth Modal Styles */
        .auth-modal {
            display: none;
            position: fixed;
            z-index: 2000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
            backdrop-filter: blur(5px);
        }
        
        .auth-modal-content {
            background-color: white;
            margin: 5% auto;
            padding: 2rem;
            border-radius: 15px;
            width: 90%;
            max-width: 400px;
            position: relative;
            animation: modalSlideIn 0.3s ease;
        }
        
        @keyframes modalSlideIn {
            from {
                opacity: 0;
                transform: translateY(-50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .modal-close {
            position: absolute;
            right: 1rem;
            top: 1rem;
            font-size: 2rem;
            cursor: pointer;
            color: #999;
        }
        
        .modal-close:hover {
            color: #333;
        }
        
        .auth-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .admin-auth-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .auth-input {
            padding: 12px;
            border: 2px solid #e0e6ed;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }
        .admin-auth-input {
            padding: 12px;
            border: 2px solid #e0e6ed;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }
        .admin-auth-input:focus {
            outline: none;
            border-color: #667eea;
        }
        .admin-auth-button {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 12px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s ease;
        }
        .auth-input:focus {
            outline: none;
            border-color: #667eea;
        }
        .auth-button {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 12px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: transform 0.3s ease;
        }
        
        .auth-button:hover {
            transform: translateY(-2px);
        }
        
        .auth-toggle {
            text-align: center;
            margin-top: 1rem;
            color: #667eea;
            cursor: pointer;
        }
        
        /* User Profile Styles */
        .user-profile {
            position: fixed;
            top: 15px;
            right: 2rem;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 0.5rem 1rem;
            border-radius: 25px;
            color: white;
            cursor: pointer;
            z-index: 1000;
        }
        
        /* Exam Mode Header - Hide all navigation, keep only user profile */
        header.exam-mode-header {
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            padding: 0.5rem 0;
        }
        
        header.exam-mode-header .header-container {
            justify-content: flex-end;
            padding-right: 2rem;
        }
        
        header.exam-mode-header .user-profile {
            position: relative;
            top: 0;
            right: 0;
        }
        
        .user-dropdown {
            position: absolute;
            top: 100%;
            right: 0;
            background: white;
            color: #333;
            min-width: 200px;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            display: none;
            z-index: 1001;
        }
        
        .user-dropdown.show {
            display: block;
        }
        
        .dropdown-item {
            padding: 0.8rem 1rem;
            cursor: pointer;
            border-bottom: 1px solid #f0f0f0;
        }
        
        .dropdown-item:hover {
            background: #f8f9fa;
        }
        
        .dropdown-item:last-child {
            border-bottom: none;
        }
        
        /* Dashboard Styles */
        .dashboard-section {
            display: none;
            padding: 120px 0 80px;
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            color: white;
            min-height: 100vh;
        }
        
        .dashboard-section.active {
            display: block;
        }
        
        .dashboard-header {
            text-align: center;
            margin-bottom: 3rem;
        }
        
        .dashboard-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }
        
        .stat-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 2rem;
            border-radius: 15px;
            text-align: center;
        }
        
        .stat-number {
            font-size: 2.5rem;
            font-weight: bold;
            margin-bottom: 0.5rem;
        }
        
        .stat-label {
            font-size: 0.9rem;
            opacity: 0.8;
        }
        
        /* Message Styles */
        .error-message, .success-message {
            position: fixed;
            top: 100px;
            left: 50%;
            transform: translateX(-50%);
            padding: 1rem 2rem;
            border-radius: 8px;
            color: white;
            font-weight: bold;
            z-index: 10000;
            animation: slideDown 0.3s ease;
        }
        
        .error-message {
            background: #ff4757;
        }
        
        .success-message {
            background: #2ed573;
        }
        
        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateX(-50%) translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateX(-50%) translateY(0);
            }
        }
        
        /* Loading Overlay */
        .loading-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            justify-content: center;
            align-items: center;
            z-index: 9999;
        }
        .loading-spinner {
            width: 50px;
            height: 50px;
            border: 5px solid rgba(255,255,255,0.3);
            border-top: 5px solid white;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }
        .loading-spinner-large {
            width: 50px;
            height: 50px;
            border: 5px solid rgba(255,255,255,0.3);
            border-top: 5px solid white;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        /* All original styles from your document continue here... */
        /* NEET Papers Section */
        .papers-section {
            display: none;
            padding: 120px 0 80px;
            background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
            color: white;
            min-height: 100vh;
        }
        
        .papers-section.active {
            display: block;
        }
        
        .neet-papers-section {
            display: none;
            padding: 120px 0 80px;
            background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
            color: white;
            min-height: 100vh;
        }
        
        .neet-papers-section.active {
            display: block;
        }
        
        .papers-header {
            text-align: center;
            margin-bottom: 4rem;
        }
        
        .papers-title {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            letter-spacing: 2px;
        }
        
        .back-button {
            position: fixed;
            top: 100px;
            left: 2rem;
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border: 2px solid rgba(255, 255, 255, 0.3);
            padding: 10px 20px;
            border-radius: 25px;
            cursor: pointer;
            font-weight: bold;
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
            z-index: 1000;
        }
        
        .back-button:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateX(-5px);
        }
        
        .papers-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }
        
        .paper-card {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            padding: 2.5rem;
            text-align: center;
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        
        .paper-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #f093fb, #f5576c);
        }
        
        .paper-card:hover {
            transform: translateY(-10px);
            background: rgba(255, 255, 255, 0.15);
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }
        
        .bio-card::before {
            background: linear-gradient(90deg, #4facfe, #00f2fe);
        }
        
        .chemistry-card::before {
            background: linear-gradient(90deg, #f093fb, #f5576c);
        }
        
        .physics-card::before {
            background: linear-gradient(90deg, #667eea, #764ba2);
        }
        
        .paper-title {
            font-size: 1.8rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: white;
        }
        
        .paper-questions {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 2rem;
        }
        
        .paper-start-btn {
            background: rgba(44, 62, 80, 0.9);
            color: white;
            border: 2px solid rgba(255, 255, 255, 0.3);
            padding: 15px 40px;
            border-radius: 10px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
            min-width: 120px;
        }
        
        .paper-start-btn:hover {
            background: rgba(44, 62, 80, 1);
            border-color: rgba(255, 255, 255, 0.5);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }
        
        .subject-icon-large {
            font-size: 3rem;
            margin-bottom: 1rem;
            opacity: 0.8;
        }

        /* Question Interface */
        .question-interface {
            display: none;
            min-height: 100vh;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 0;
        }
        
        .question-interface.active {
            display: block;
        }
        
        .question-header {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 1rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        
        .question-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            color: white;
        }
        
        .exam-info {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        
        .exam-title {
            font-size: 1.3rem;
            font-weight: 600;
        }
        
        .question-counter {
            background: rgba(255, 255, 255, 0.2);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-size: 0.9rem;
        }
        
        .question-actions {
            display: flex;
            gap: 1rem;
            align-items: center;
        }
        
        .timer {
            background: rgba(255, 255, 255, 0.2);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-family: monospace;
            font-size: 1.1rem;
        }
        
        .exit-btn {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 0.5rem 1rem;
            border-radius: 20px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .exit-btn:hover {
            background: rgba(255, 255, 255, 0.3);
        }
        
        .question-content {
            display: flex;
            max-width: 1400px;
            margin: 0 auto;
            min-height: calc(100vh - 80px);
        }
        
        .question-panel {
            flex: 1;
            padding: 2rem;
            background: white;
            margin: 2rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        
        .question-number {
            color: #667eea;
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        
        .question-text {
            font-size: 1.1rem;
            line-height: 1.7;
            margin-bottom: 2rem;
            color: #333;
        }
        
        .options-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .option-item {
            margin-bottom: 1rem;
            padding: 1rem;
            border: 2px solid #e0e6ed;
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
        }
        
        .option-item:hover {
            border-color: #667eea;
            background: #f8f9ff;
        }
        
        .option-item.selected {
            border-color: #667eea;
            background: #667eea;
            color: white;
        }
        
        .option-label {
            font-weight: 600;
            margin-right: 0.5rem;
        }
        
        .question-controls {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #e0e6ed;
        }
        
        .nav-buttons {
            display: flex;
            gap: 1rem;
        }
        
        .nav-btn {
            padding: 0.7rem 1.5rem;
            border: 2px solid #667eea;
            background: white;
            color: #667eea;
            border-radius: 25px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .nav-btn:hover {
            background: #667eea;
            color: white;
        }
        
        .nav-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }
        
        .ai-solution-btn {
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            color: white;
            border: none;
            padding: 0.7rem 1.5rem;
            border-radius: 25px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .ai-solution-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(240, 147, 251, 0.4);
        }
        
        .sidebar {
            width: 300px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 2rem;
            margin: 2rem 2rem 2rem 0;
            border-radius: 15px;
            transition: all 0.3s ease;
        }
        
        .sidebar.hidden {
            display: none;
        }
        
        .sidebar h3 {
            color: white;
            margin-bottom: 1rem;
            font-size: 1.2rem;
        }
        
        .question-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 0.5rem;
            margin-bottom: 2rem;
        }
        
        .question-bubble {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border: 2px solid transparent;
        }
        
        .question-bubble:hover {
            background: rgba(255, 255, 255, 0.3);
        }
        
        .question-bubble.current {
            background: white;
            color: #667eea;
            border-color: #667eea;
        }
        
        .question-bubble.answered {
            background: #4CAF50;
            color: white;
        }
        
        .question-bubble.marked {
            background: #ff9800;
            color: white;
        }
        
        .sidebar-stats {
            color: white;
            font-size: 0.9rem;
        }
        
        .stat-row {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.5rem;
            padding: 0.3rem 0;
        }

        /* Other sections */
        .subjects {
            padding: 80px 0;
        }
        
        .subjects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }
        
        .subject-card {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 2rem;
            border-radius: 15px;
            text-align: center;
            transition: transform 0.3s ease;
        }
        
        .subject-card:hover {
            transform: scale(1.05);
        }
        
        .subject-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
        }
        
        .how-it-works {
            padding: 80px 0;
            background: #f8f9fa;
        }
        
        .steps-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }
        
        .step {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            text-align: center;
            position: relative;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        }
        
        .step-number {
            position: absolute;
            top: -15px;
            left: 50%;
            transform: translateX(-50%);
            background: #667eea;
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.2rem;
        }
        
        .step h3 {
            margin: 1.5rem 0 1rem;
            color: #333;
        }
        
        /* ===== VIRTUAL CLASSROOM SECTION ===== */
        .virtual-classroom-section {
            padding: 120px 0;
            background: linear-gradient(180deg, #ffffff 0%, #f0f4ff 100%);
            position: relative;
            overflow: hidden;
        }
        
        .classroom-header {
            text-align: center;
            margin-bottom: 5rem;
        }
        
        .classroom-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
            color: white;
            padding: 0.7rem 1.8rem;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            box-shadow: 0 6px 20px rgba(66, 133, 244, 0.4);
        }
        
        .classroom-subtitle {
            font-size: 1.2rem;
            color: #555;
            max-width: 800px;
            margin: 0 auto;
            line-height: 1.8;
        }
        
        /* Platform Cards */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 3rem;
            margin-bottom: 6rem;
            max-width: 1000px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .platform-card {
            background: white;
            padding: 3rem;
            border-radius: 25px;
            box-shadow: 0 15px 50px rgba(0,0,0,0.08);
            text-align: center;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }
        
        .platform-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
        }
        
        .platform-teams::before {
            background: linear-gradient(90deg, #5b5fc7 0%, #6264a7 100%);
        }
        
        .platform-classroom::before {
            background: linear-gradient(90deg, #0f9d58 0%, #34a853 100%);
        }
        
        .platform-card:hover {
            transform: translateY(-15px);
            box-shadow: 0 25px 70px rgba(0,0,0,0.12);
        }
        
        .platform-icon-wrapper {
            width: 100px;
            height: 100px;
            margin: 0 auto 2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 20px;
            background: linear-gradient(135deg, #f0f4ff 0%, #e8f0fe 100%);
        }
        
        .platform-logo {
            width: 60px;
            height: 60px;
            object-fit: contain;
        }
        
        .platform-icon-fallback {
            font-size: 3.5rem;
        }
        
        .platform-card h3 {
            font-size: 1.8rem;
            color: #1e3c72;
            margin-bottom: 1rem;
        }
        
        .platform-card p {
            font-size: 1.05rem;
            color: #666;
            line-height: 1.8;
            margin-bottom: 2rem;
        }
        
        .platform-features {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            justify-content: center;
            margin-bottom: 2rem;
        }
        
        .feature-tag {
            background: #f0f4ff;
            color: #4285f4;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
        }
        
        .platform-btn {
            width: 100%;
            padding: 1rem 2rem;
            border: none;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 700;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.8rem;
            transition: all 0.3s ease;
            color: white;
        }
        
        .platform-btn-teams {
            background: linear-gradient(135deg, #5b5fc7 0%, #6264a7 100%);
            box-shadow: 0 8px 25px rgba(91, 95, 199, 0.3);
        }
        
        .platform-btn-classroom {
            background: linear-gradient(135deg, #0f9d58 0%, #34a853 100%);
            box-shadow: 0 8px 25px rgba(15, 157, 88, 0.3);
        }
        
        .platform-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(0,0,0,0.25);
        }
        
        .platform-btn .btn-icon {
            transition: transform 0.3s ease;
        }
        
        .platform-btn:hover .btn-icon {
            transform: translateX(5px);
        }
        
        /* Teacher Section */
        .teacher-section {
            background: white;
            border-radius: 30px;
            padding: 4rem;
            margin-bottom: 6rem;
            box-shadow: 0 15px 50px rgba(0,0,0,0.05);
        }
        
        .teacher-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }
        
        .teacher-info h3 {
            font-size: 2.2rem;
            color: #1e3c72;
            margin-bottom: 1.5rem;
        }
        
        .teacher-info > p {
            font-size: 1.1rem;
            color: #666;
            line-height: 1.8;
            margin-bottom: 2.5rem;
        }
        
        .teacher-benefits {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }
        
        .benefit-item {
            display: flex;
            align-items: start;
            gap: 1rem;
            padding: 1.5rem;
            background: #f8f9ff;
            border-radius: 15px;
            transition: all 0.3s ease;
        }
        
        .benefit-item:hover {
            transform: translateX(10px);
            background: #f0f4ff;
        }
        
        .benefit-icon {
            font-size: 2.5rem;
            flex-shrink: 0;
        }
        
        .benefit-item h4 {
            font-size: 1.1rem;
            color: #1e3c72;
            margin-bottom: 0.5rem;
        }
        
        .benefit-item p {
            font-size: 0.9rem;
            color: #666;
            line-height: 1.5;
        }
        
        .teacher-visual {
            position: relative;
            width: 300px;
            height: 300px;
            margin: 0 auto;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .visual-icon {
            font-size: 8rem;
        }
        
        .visual-badge {
            position: absolute;
            background: white;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            color: #1e3c72;
            box-shadow: 0 5px 20px rgba(0,0,0,0.15);
            animation: float 3s ease-in-out infinite;
        }
        
        .badge-1 {
            top: 10%;
            left: -10%;
            animation-delay: 0s;
        }
        
        .badge-2 {
            top: 50%;
            right: -15%;
            animation-delay: 1s;
        }
        
        .badge-3 {
            bottom: 15%;
            left: 10%;
            animation-delay: 2s;
        }
        
        /* Schedule Section */
        .schedule-section {
            margin-bottom: 6rem;
        }
        
        .schedule-title {
            text-align: center;
            font-size: 2.5rem;
            color: #1e3c72;
            margin-bottom: 3rem;
        }
        
        .schedule-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }
        
        .schedule-card {
            background: white;
            padding: 2rem;
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.06);
            transition: all 0.3s ease;
            position: relative;
            border-top: 4px solid transparent;
        }
        
        .schedule-card:nth-child(odd) {
            border-top-color: #5b5fc7;
        }
        
        .schedule-card:nth-child(even) {
            border-top-color: #34a853;
        }
        
        .schedule-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 50px rgba(0,0,0,0.1);
        }
        
        .schedule-day {
            font-size: 1.3rem;
            font-weight: 700;
            color: #1e3c72;
            margin-bottom: 0.8rem;
        }
        
        .schedule-time {
            font-size: 0.95rem;
            color: #666;
            margin-bottom: 1rem;
        }
        
        .schedule-subject {
            font-size: 1.1rem;
            font-weight: 600;
            color: #333;
            margin-bottom: 0.5rem;
        }
        
        .schedule-teacher {
            font-size: 0.9rem;
            color: #999;
            margin-bottom: 1rem;
        }
        
        .schedule-platform {
            display: inline-block;
            background: linear-gradient(135deg, #f0f4ff 0%, #e8f0fe 100%);
            color: #4285f4;
            padding: 0.4rem 1rem;
            border-radius: 15px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        
        /* Classroom CTA */
        .classroom-cta {
            background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
            border-radius: 35px;
            padding: 4rem 3rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .classroom-cta::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            animation: rotate 15s linear infinite;
        }
        
        .classroom-cta-content {
            position: relative;
            z-index: 1;
            color: white;
        }
        
        .classroom-cta h3 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }
        
        .classroom-cta p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            opacity: 0.95;
        }
        
        .cta-button-classroom {
            background: white;
            color: #4285f4;
            border: none;
            padding: 1.3rem 3.5rem;
            border-radius: 50px;
            font-size: 1.15rem;
            font-weight: 700;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.8rem;
            transition: all 0.3s ease;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }
        
        .cta-button-classroom:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.3);
        }
        
        .cta-button-classroom .btn-arrow {
            font-size: 1.5rem;
            transition: transform 0.3s ease;
        }
        
        .cta-button-classroom:hover .btn-arrow {
            transform: translateX(8px);
        }
        
        /* Responsive Design for Virtual Classroom */
        @media (max-width: 1024px) {
            .platform-grid {
                grid-template-columns: 1fr;
                max-width: 600px;
            }
            
            .teacher-content {
                grid-template-columns: 1fr;
            }
            
            .schedule-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .teacher-benefits {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 768px) {
            .virtual-classroom-section {
                padding: 80px 0;
            }
            
            .schedule-grid {
                grid-template-columns: 1fr;
            }
            
            .teacher-section {
                padding: 2rem;
            }
            
            .teacher-visual {
                width: 250px;
                height: 250px;
            }
            
            .visual-icon {
                font-size: 6rem;
            }
            
            .visual-badge {
                font-size: 0.75rem;
                padding: 0.4rem 0.8rem;
            }
            
            .classroom-cta h3 {
                font-size: 1.8rem;
            }
        }
        
        @media (max-width: 480px) {
            .platform-card {
                padding: 2rem;
            }
            
            .schedule-title {
                font-size: 1.8rem;
            }
            
            .teacher-info h3 {
                font-size: 1.6rem;
            }
        }
        
        /* ===== ABOUT SECTION ===== */
        .about {
            padding: 120px 0;
            background: linear-gradient(180deg, #f8f9ff 0%, #ffffff 50%, #f8f9ff 100%);
            position: relative;
            overflow: hidden;
        }
        
        .about-bg-elements {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: 0;
        }
        
        .about-circle {
            position: absolute;
            border-radius: 50%;
            opacity: 0.03;
        }
        
        .about-circle-1 {
            width: 500px;
            height: 500px;
            background: linear-gradient(135deg, #667eea, #764ba2);
            top: -250px;
            right: -250px;
            animation: float 20s ease-in-out infinite;
        }
        
        .about-circle-2 {
            width: 400px;
            height: 400px;
            background: linear-gradient(135deg, #f093fb, #f5576c);
            bottom: 10%;
            left: -200px;
            animation: float 25s ease-in-out infinite reverse;
        }
        
        .about-circle-3 {
            width: 300px;
            height: 300px;
            background: linear-gradient(135deg, #4facfe, #00f2fe);
            top: 50%;
            right: 10%;
            animation: float 30s ease-in-out infinite;
        }
        
        @keyframes float {
            0%, 100% { transform: translate(0, 0) rotate(0deg); }
            33% { transform: translate(30px, -30px) rotate(120deg); }
            66% { transform: translate(-20px, 20px) rotate(240deg); }
        }
        
        .about .container {
            position: relative;
            z-index: 1;
        }
        
        .about-header {
            text-align: center;
            margin-bottom: 5rem;
        }
        
        .about-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 0.7rem 1.8rem;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
            animation: badgePulse 2s ease-in-out infinite;
        }
        
        @keyframes badgePulse {
            0%, 100% { transform: scale(1); box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4); }
            50% { transform: scale(1.05); box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6); }
        }
        
        .badge-icon {
            font-size: 1.1rem;
            animation: sparkle 1.5s ease-in-out infinite;
        }
        
        @keyframes sparkle {
            0%, 100% { transform: rotate(0deg) scale(1); }
            50% { transform: rotate(180deg) scale(1.2); }
        }
        
        .about .section-title {
            font-size: 3.2rem;
            color: #1e3c72;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        
        .title-highlight {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .about-subtitle {
            font-size: 1.2rem;
            color: #555;
            max-width: 800px;
            margin: 0 auto;
            line-height: 1.8;
        }
        
        /* Vision Cards */
        .about-vision-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2.5rem;
            margin-bottom: 6rem;
        }
        
        .vision-card {
            position: relative;
            padding: 3rem;
            border-radius: 25px;
            background: white;
            box-shadow: 0 15px 50px rgba(0,0,0,0.08);
            transition: all 0.4s ease;
            overflow: hidden;
        }
        
        .vision-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
        }
        
        .vision-card-primary::before {
            background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
        }
        
        .vision-card-secondary::before {
            background: linear-gradient(90deg, #f093fb 0%, #f5576c 100%);
        }
        
        .vision-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 60px rgba(102, 126, 234, 0.15);
        }
        
        .vision-decoration {
            position: absolute;
            bottom: -30px;
            right: -30px;
            width: 150px;
            height: 150px;
            border-radius: 50%;
            background: linear-gradient(135deg, #667eea, #764ba2);
            opacity: 0.05;
        }
        
        .vision-icon {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            display: block;
        }
        
        .vision-card h3 {
            font-size: 1.8rem;
            color: #1e3c72;
            margin-bottom: 1rem;
        }
        
        .vision-card p {
            font-size: 1.05rem;
            line-height: 1.8;
            color: #666;
        }
        
        /* Stats Section */
        .about-stats-section {
            margin-bottom: 6rem;
        }
        
        .stats-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }
        
        .stat-card-new {
            background: white;
            padding: 2.5rem 2rem;
            border-radius: 20px;
            text-align: center;
            box-shadow: 0 10px 40px rgba(0,0,0,0.06);
            transition: all 0.4s ease;
            border: 2px solid transparent;
            position: relative;
            overflow: hidden;
        }
        
        .stat-card-new::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            opacity: 0;
            transition: opacity 0.4s ease;
        }
        
        .stat-card-new:hover {
            transform: translateY(-15px);
            border-color: #667eea;
            box-shadow: 0 20px 60px rgba(102, 126, 234, 0.2);
        }
        
        .stat-card-new:hover::before {
            opacity: 0.03;
        }
        
        .stat-icon-wrapper {
            position: relative;
            z-index: 1;
        }
        
        .stat-icon-new {
            font-size: 3.5rem;
            display: block;
            margin-bottom: 1rem;
            animation: bounceIn 0.6s ease;
        }
        
        .stat-content {
            position: relative;
            z-index: 1;
        }
        
        .stat-number-new {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 0.5rem;
        }
        
        .stat-label-new {
            font-size: 1.05rem;
            color: #1e3c72;
            font-weight: 600;
            margin-bottom: 0.3rem;
        }
        
        .stat-description {
            font-size: 0.85rem;
            color: #999;
        }
        
        /* Core Values */
        .about-values-section {
            margin-bottom: 6rem;
        }
        
        .values-title {
            text-align: center;
            font-size: 2.5rem;
            color: #1e3c72;
            margin-bottom: 3rem;
        }
        
        .values-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }
        
        .value-card {
            padding: 2rem;
            text-align: center;
            background: white;
            border-radius: 20px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }
        
        .value-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 45px rgba(0,0,0,0.1);
        }
        
        .value-icon-bg {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            transition: all 0.3s ease;
        }
        
        .value-icon-bg-1 {
            background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
        }
        
        .value-icon-bg-2 {
            background: linear-gradient(135deg, rgba(240, 147, 251, 0.1), rgba(245, 87, 108, 0.1));
        }
        
        .value-icon-bg-3 {
            background: linear-gradient(135deg, rgba(79, 172, 254, 0.1), rgba(0, 242, 254, 0.1));
        }
        
        .value-icon-bg-4 {
            background: linear-gradient(135deg, rgba(250, 208, 0, 0.1), rgba(250, 128, 0, 0.1));
        }
        
        .value-card:hover .value-icon-bg {
            transform: scale(1.1) rotate(10deg);
        }
        
        .value-icon {
            font-size: 2.5rem;
        }
        
        .value-card h4 {
            font-size: 1.3rem;
            color: #1e3c72;
            margin-bottom: 1rem;
        }
        
        .value-card p {
            font-size: 0.95rem;
            color: #666;
            line-height: 1.6;
        }
        
        /* Journey Timeline */
        .about-journey-section {
            margin-bottom: 6rem;
            padding: 3rem;
            background: white;
            border-radius: 30px;
            box-shadow: 0 15px 50px rgba(0,0,0,0.05);
        }
        
        .journey-title {
            text-align: center;
            font-size: 2.5rem;
            color: #1e3c72;
            margin-bottom: 3rem;
        }
        
        .journey-timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }
        
        .journey-timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, #667eea 0%, #764ba2 100%);
            opacity: 0.2;
        }
        
        .timeline-item {
            position: relative;
            margin-bottom: 3rem;
            display: flex;
            justify-content: center;
        }
        
        .timeline-dot {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 20px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 50%;
            box-shadow: 0 0 0 8px rgba(102, 126, 234, 0.1);
            z-index: 2;
        }
        
        .timeline-dot-future {
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            box-shadow: 0 0 0 8px rgba(240, 147, 251, 0.1);
            animation: pulse 2s ease-in-out infinite;
        }
        
        @keyframes pulse {
            0%, 100% { transform: translateX(-50%) scale(1); }
            50% { transform: translateX(-50%) scale(1.2); }
        }
        
        .timeline-content {
            background: #f8f9ff;
            padding: 2rem;
            border-radius: 15px;
            width: 400px;
            margin-left: 2rem;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }
        
        .timeline-item:nth-child(even) .timeline-content {
            margin-left: 0;
            margin-right: 2rem;
        }
        
        .timeline-content:hover {
            transform: scale(1.05);
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        
        .timeline-year {
            display: inline-block;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 0.3rem 1rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
        }
        
        .timeline-content h4 {
            font-size: 1.4rem;
            color: #1e3c72;
            margin-bottom: 0.5rem;
        }
        
        .timeline-content p {
            font-size: 0.95rem;
            color: #666;
            line-height: 1.6;
        }
        
        /* CTA Section */
        .about-cta {
            text-align: center;
            padding: 4rem 3rem;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 35px;
            color: white;
            position: relative;
            overflow: hidden;
        }
        
        .about-cta::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            animation: rotate 15s linear infinite;
        }
        
        @keyframes rotate {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }
        
        .cta-content {
            position: relative;
            z-index: 1;
        }
        
        .cta-icon {
            font-size: 4rem;
            margin-bottom: 1rem;
            animation: bounce 2s ease-in-out infinite;
        }
        
        @keyframes bounce {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }
        
        .about-cta h3 {
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }
        
        .about-cta p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            opacity: 0.95;
        }
        
        .cta-button-large {
            background: white;
            color: #667eea;
            border: none;
            padding: 1.3rem 3.5rem;
            border-radius: 50px;
            font-size: 1.15rem;
            font-weight: 700;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.8rem;
            transition: all 0.3s ease;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }
        
        .cta-button-large:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.3);
        }
        
        .cta-button-large .btn-arrow {
            font-size: 1.5rem;
            transition: transform 0.3s ease;
        }
        
        .cta-button-large:hover .btn-arrow {
            transform: translateX(8px);
        }
        
        /* Responsive Design */
        @media (max-width: 1024px) {
            .about-vision-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            
            .stats-container {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .values-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .timeline-content {
                width: 350px;
            }
        }
        
        @media (max-width: 768px) {
            .about {
                padding: 80px 0;
            }
            
            .about .section-title {
                font-size: 2.2rem;
            }
            
            .stats-container {
                grid-template-columns: 1fr;
            }
            
            .values-grid {
                grid-template-columns: 1fr;
            }
            
            .journey-timeline::before {
                left: 20px;
            }
            
            .timeline-dot {
                left: 20px;
            }
            
            .timeline-content {
                width: 100%;
                margin-left: 60px !important;
                margin-right: 0 !important;
            }
            
            .about-cta h3 {
                font-size: 1.8rem;
            }
        }
        
        @media (max-width: 480px) {
            .about .section-title {
                font-size: 1.8rem;
            }
            
            .vision-card {
                padding: 2rem;
            }
            
            .cta-button-large {
                padding: 1rem 2.5rem;
                font-size: 1rem;
            }
        }
        
        /* Trust bar */
        .trust-bar { background: #0b1230; color: #c8d2ff; padding: 22px 0; border-top: 1px solid rgba(255,255,255,.08); border-bottom: 1px solid rgba(255,255,255,.08); }
        .trust-container { display:flex; gap:1rem; align-items:center; justify-content:space-between; flex-wrap:wrap; }
        .trust-title { font-weight:700; opacity:.9; }
        .trust-logos { display:flex; gap:1rem; flex-wrap:wrap; }
        .trust-logo { background:#111a48; border:1px solid rgba(255,255,255,.08); color:#9fb0ff; padding:.6rem .9rem; border-radius:10px; }

        /* Feature highlight cards */
        .features-highlight { padding: 70px 0; background: #fff; }
        .features-grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.2rem; }
        .feature-card { background:#fff; border:1px solid #eef0ff; border-radius:16px; padding:1.2rem; box-shadow:0 10px 30px rgba(11,18,48,.06); transition:transform .2s ease, box-shadow .2s ease; }
        .feature-card:hover { transform: translateY(-3px); box-shadow:0 16px 40px rgba(11,18,48,.09); }
        .feature-icon { font-size: 1.6rem; background: #f4f6ff; border:1px solid #e8ebff; color:#667eea;  display:grid; place-items:center; border-radius:12px; margin-bottom:.8rem; }
        .feature-title { font-weight:800; margin-bottom:.3rem; color:#152048; }
        .feature-text { color:#576489; font-size:.98rem; }

        /* Subjects grid */
        .subjects-section { padding: 70px 0; background: #f8f9ff; }
        .subjects-grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
        .subject-card { background:#fff; border:1px solid #eef0ff; border-radius:16px; padding:1rem; box-shadow:0 8px 24px rgba(11,18,48,.06); transition:transform .2s ease, box-shadow .2s ease; }
        .subject-card:hover { transform: translateY(-3px); box-shadow:0 16px 40px rgba(11,18,48,.09); }
        .subject-head { display:flex; align-items:center; gap:.6rem; margin-bottom:.4rem; }
        .subject-emoji { font-size:1.4rem; }
        .subject-title { font-weight:800; color:#152048; }
        .subject-meta { color:#576489; font-size:.9rem; }

        /* Testimonials */
        .testimonials { padding: 80px 0; background:#fff; }
        .testimonial-track { display:flex; gap:1rem; overflow:hidden; scroll-behavior:smooth; }
        .testimonial-card { flex:0 0 320px; background:#fff; border:1px solid #eef0ff; border-radius:16px; padding:1rem; box-shadow:0 8px 24px rgba(11,18,48,.06); }
        .testimonial-user { display:flex; align-items:center; gap:.6rem; margin-top:.6rem; font-weight:700; }
        .testimonial-quote { color:#152048; font-size:1rem; line-height:1.6; }
        .testimonial-controls { display:flex; gap:.6rem; justify-content:center; margin-top:1rem; }
        .ts-btn { padding:.5rem .9rem; border-radius:10px; border:1px solid #dfe4ff; background:#f4f6ff; font-weight:700; cursor:pointer; }

        /* App section */
        .app-section { padding: 80px 0; background: linear-gradient(135deg, #1b2568 0%, #0b1230 100%); color:white; }
        .app-grid { display:grid; grid-template-columns: 1.1fr .9fr; gap:1.5rem; align-items:center; }
        .app-card { background: rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.12); border-radius:16px; padding:1rem; }
        .app-points { display:grid; gap:.6rem; margin-top:.6rem; }
        .app-point { display:flex; gap:.4rem; align-items:center; opacity:.95; }

        /* CTA strip */
        .cta-strip { padding: 60px 0; background:#f8f9ff; }
        .cta-inner { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color:white; border-radius:16px; padding:2rem; display:grid; grid-template-columns: 1.2fr .8fr; gap:1rem; align-items:center; }
        .cta-buttons { display:flex; gap:.6rem; justify-content:flex-end; flex-wrap:wrap; }
        
        /* Pricing Section */
        .pricing-section {
            padding: 100px 0;
            background: linear-gradient(180deg, #f8f9ff 0%, #ffffff 100%);
        }
        
        .section-subtitle {
            text-align: center;
            font-size: 1.2rem;
            color: #666;
            margin-top: -1rem;
            margin-bottom: 3rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .pricing-toggle {
            display: flex;
            justify-content: center;
            gap: 0;
            margin-bottom: 4rem;
            background: #e8ecf5;
            padding: 0.4rem;
            border-radius: 50px;
            width: fit-content;
            margin-left: auto;
            margin-right: auto;
        }
        
        .toggle-btn {
            padding: 0.8rem 2rem;
            border: none;
            background: transparent;
            color: #666;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            border-radius: 50px;
            transition: all 0.3s ease;
            position: relative;
        }
        
        .toggle-btn.active {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
        }
        
        .save-badge {
            background: #ff6b6b;
            color: white;
            padding: 0.2rem 0.6rem;
            border-radius: 20px;
            font-size: 0.75rem;
            margin-left: 0.5rem;
            font-weight: 700;
        }
        
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2rem;
            max-width: 1200px;
            margin: 0 auto 4rem;
            padding: 0 2rem;
        }
        
        .pricing-card {
            background: white;
            border-radius: 20px;
            padding: 2.5rem;
            box-shadow: 0 10px 40px rgba(0,0,0,0.1);
            transition: all 0.4s ease;
            position: relative;
            border: 2px solid transparent;
        }
        
        .pricing-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 60px rgba(102, 126, 234, 0.2);
            border-color: #667eea;
        }
        
        .pricing-card.featured {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            transform: scale(1.05);
            border: none;
        }
        
        .pricing-card.featured:hover {
            transform: scale(1.08) translateY(-10px);
        }
        
        .popular-badge {
            position: absolute;
            top: -15px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
            color: white;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            box-shadow: 0 4px 15px rgba(238, 90, 111, 0.4);
        }
        
        .plan-header {
            text-align: center;
            margin-bottom: 2rem;
            padding-bottom: 2rem;
            border-bottom: 2px solid rgba(102, 126, 234, 0.1);
        }
        
        .pricing-card.featured .plan-header {
            border-bottom-color: rgba(255,255,255,0.2);
        }
        
        .plan-icon {
            font-size: 3.5rem;
            margin-bottom: 1rem;
            animation: float 3s ease-in-out infinite;
        }
        
        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }
        
        .plan-name {
            font-size: 2rem;
            margin-bottom: 0.5rem;
            font-weight: 700;
        }
        
        .plan-description {
            color: #666;
            font-size: 0.95rem;
        }
        
        .pricing-card.featured .plan-description {
            color: rgba(255,255,255,0.9);
        }
        
        .plan-price {
            text-align: center;
            margin-bottom: 2rem;
            line-height: 1;
        }
        
        .currency {
            font-size: 1.5rem;
            vertical-align: super;
            font-weight: 600;
        }
        
        .amount {
            font-size: 3.5rem;
            font-weight: 800;
            color: #667eea;
        }
        
        .pricing-card.featured .amount {
            color: white;
        }
        
        .amount.custom {
            font-size: 2.5rem;
        }
        
        .period {
            font-size: 1rem;
            color: #999;
            font-weight: 500;
        }
        
        .pricing-card.featured .period {
            color: rgba(255,255,255,0.8);
        }
        
        .plan-features {
            list-style: none;
            margin-bottom: 2rem;
        }
        
        .plan-features li {
            padding: 0.8rem 0;
            border-bottom: 1px solid #f0f0f0;
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 0.95rem;
        }
        
        .pricing-card.featured .plan-features li {
            border-bottom-color: rgba(255,255,255,0.1);
        }
        
        .plan-features li:last-child {
            border-bottom: none;
        }
        
        .check {
            color: #4caf50;
            font-weight: 900;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        
        .pricing-card.featured .check {
            color: #4caf50;
        }
        
        .cross {
            color: #ddd;
            font-weight: 900;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        
        .plan-cta {
            width: 100%;
            padding: 1rem 2rem;
            border: none;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
        }
        
        .plan-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
        }
        
        .plan-cta.featured-cta {
            background: white;
            color: #667eea;
        }
        
        .plan-cta.featured-cta:hover {
            background: #f8f9ff;
        }
        
        .plan-cta .arrow {
            transition: transform 0.3s ease;
        }
        
        .plan-cta:hover .arrow {
            transform: translateX(5px);
        }
        
        /* Pricing FAQ */
        .pricing-faq {
            max-width: 1000px;
            margin: 5rem auto 3rem;
            padding: 0 2rem;
        }
        
        .faq-title {
            text-align: center;
            font-size: 2rem;
            margin-bottom: 3rem;
            color: #333;
        }
        
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }
        
        .faq-item {
            background: white;
            padding: 1.8rem;
            border-radius: 15px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.08);
            transition: transform 0.3s ease;
        }
        
        .faq-item:hover {
            transform: translateY(-5px);
        }
        
        .faq-item h4 {
            color: #667eea;
            margin-bottom: 0.8rem;
            font-size: 1.1rem;
        }
        
        .faq-item p {
            color: #666;
            line-height: 1.6;
            font-size: 0.95rem;
        }
        
        /* Trust Badges */
        .trust-badges {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 2rem;
            margin-top: 3rem;
            padding: 2rem;
        }
        
        .badge-item {
            padding: 0.8rem 1.5rem;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
        }
        
        footer {
            background: #333;
            color: white;
            padding: 40px 0 20px;
            text-align: center;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        
        .footer-section h3 {
            margin-bottom: 1rem;
            color: #667eea;
        }
        
        .footer-section ul {
            list-style: none;
        }
        
        .footer-section ul li {
            margin-bottom: 0.5rem;
        }
        
        .footer-section ul li a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        
        .footer-section ul li a:hover {
            color: #ffd700;
        }
        
        /* AI Solution Modal */
        .ai-solution-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.8);
            z-index: 2000;
            overflow-y: auto;
        }
        
        .ai-solution-content {
            background: white;
            margin: 2rem auto;
            padding: 2rem;
            border-radius: 15px;
            max-width: 800px;
            position: relative;
        }
        
        .solution-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
            border-bottom: 2px solid #f0f0f0;
            padding-bottom: 1rem;
        }
        
        .solution-title {
            font-size: 1.5rem;
            color: #667eea;
            font-weight: 600;
        }
        
        .close-solution {
            background: none;
            border: none;
            font-size: 2rem;
            color: #999;
            cursor: pointer;
        }
        
        .solution-body {
            line-height: 1.8;
            font-size: 1.1rem;
        }
        
        .solution-step {
            margin-bottom: 1.5rem;
            padding: 1rem;
            background: #f8f9ff;
            border-left: 4px solid #667eea;
            border-radius: 5px;
        }

        /* AI Solution Modal Enhancements */
        .solution-footer {
            margin-top: 1.25rem;
            display: flex;
            gap: .75rem;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }
        .ai-solution-meta {
            font-size: .85rem;
            opacity: .7;
        }
        .solution-footer-buttons { display: flex; gap: .5rem; }
        .ai-copy-btn { padding: .5rem .9rem; font-size: .8rem; }
        .ai-regenerate-btn { padding: .5rem .9rem; font-size: .8rem; background: #4facfe; }

        /* Skeleton Loading */
        @keyframes skeleton-shimmer { 0% { background-position:0 0; } 100% { background-position:-200% 0; } }
        .skeleton-line {
            height: 14px;
            background: linear-gradient(90deg, #ececec, #f5f5f5, #ececec);
            background-size: 200% 100%;
            animation: skeleton-shimmer 1.2s infinite;
            border-radius: 4px;
            margin-bottom: 8px;
        }
        .skeleton-line.short { width: 55%; }
        .skeleton-line.mid { width: 72%; }
        .skeleton-line.long { width: 90%; }
        .concept-tag {
            display: inline-block;
            background: #eef2ff;
            color: #3f51b5;
            padding: .25rem .55rem;
            margin: .25rem .35rem .25rem 0;
            border-radius: 20px;
            font-size: .7rem;
            font-weight: 600;
            letter-spacing: .5px;
        }
        .difficulty-pill {
            display:inline-flex;
            align-items:center;
            gap:.4rem;
            background:#222;
            color:#fff;
            padding:.35rem .7rem;
            border-radius:18px;
            font-size:.7rem;
            font-weight:500;
        }
        .difficulty-pill.easy { background:#2e7d32; }
        .difficulty-pill.medium { background:#ed6c02; }
        .difficulty-pill.hard { background:#c62828; }
        
        /* Responsive Design */
        @media (max-width: 768px) {
            /* Manifesto Badge Mobile Styles */
            .hero-manifesto-badge {
                padding: 0.8rem 1.5rem;
                border-radius: 12px;
            }
            
            .manifesto-text {
                font-size: 0.75rem;
            }
            
            .manifesto-highlight {
                font-size: 1.4rem;
                letter-spacing: 1px;
            }
            
            .manifesto-sub {
                font-size: 0.85rem;
                letter-spacing: 1px;
            }
            
            .hero {
                padding: 100px 0 60px;
            }
            
            .hero-content {
                padding: 0 1rem;
            }
            
            .hero-eyebrow {
                font-size: 0.8rem;
                padding: 0.3rem 0.6rem;
            }
            
            .hero-title {
                font-size: clamp(1.8rem, 6vw, 2.5rem) !important;
            }
            
            .hero-subtitle {
                font-size: 1rem;
            }
            
            .hero-search {
                flex-direction: column;
                gap: 0.5rem;
            }
            
            .hero-search-input,
            .hero-search-btn {
                width: 100%;
            }
            
            .hero-ctas {
                flex-direction: column;
                gap: 0.6rem;
            }
            
            .cta-button {
                width: 100%;
                padding: 12px 20px;
                font-size: 1rem;
            }
            
            .hero-pills {
                gap: 0.4rem;
            }
            
            .pill {
                font-size: 0.8rem;
                padding: 0.35rem 0.6rem;
            }
            
            .stat-box {
                min-width: 140px;
                padding: 0.7rem 1rem;
            }
            
            .stat-number {
                font-size: 1.4rem;
            }
            
            .stat-label {
                font-size: 0.8rem;
            }
            
            .app-badge {
                padding: 0.6rem 0.9rem;
                font-size: 0.9rem;
            }
            
            .nav-menu {
                position: fixed;
                left: -100%;
                top: 70px;
                flex-direction: column;
                background-color: rgba(102, 126, 234, 0.95);
                -webkit-backdrop-filter: blur(10px);
                backdrop-filter: blur(10px);
                width: 100%;
                text-align: center;
                transition: 0.3s;
                box-shadow: 0 10px 27px rgba(0,0,0,0.05);
                padding: 2rem 0;
                gap: 1rem;
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .mobile-menu-toggle {
                display: flex;
            }
            
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .hero p {
                font-size: 1.1rem;
            }
            
            .section-title {
                font-size: 2rem;
            }
            
            .about-content {
                grid-template-columns: 1fr;
                gap: 2rem;
                text-align: center;
            }
            
            .exam-cards-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            
            .exam-card {
                padding: 2rem;
            }
            
            .question-content {
                flex-direction: column;
            }
            
            .sidebar {
                width: auto;
                margin: 0 2rem 2rem;
                order: -1;
            }
        }
        
        /* Question Upload Styles */
        .question-upload-section {
            display: none;
            padding: 120px 0 80px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            min-height: 100vh;
        }

        .question-upload-section.active {
            display: block;
        }

        .upload-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .upload-form-card {
            background: rgba(255, 255, 255, 0.95);
            color: #333;
            padding: 3rem;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }

        .file-upload-area {
            border: 3px dashed #667eea;
            border-radius: 15px;
            padding: 3rem;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-bottom: 2rem;
        }

        .file-upload-area:hover {
            border-color: #5a67d8;
            background: rgba(102, 126, 234, 0.05);
        }

        .file-upload-area.dragover {
            border-color: #4c51bf;
            background: rgba(102, 126, 234, 0.1);
        }

        .upload-icon {
            font-size: 4rem;
            margin-bottom: 1rem;
        }

        .upload-text h4 {
            margin-bottom: 0.5rem;
            color: #333;
        }

        .upload-text p {
            color: #666;
            font-size: 0.9rem;
        }

        .image-preview {
            text-align: center;
            margin-bottom: 2rem;
            position: relative;
        }

        .remove-image-btn {
            background: #ff4757;
            color: white;
            border: none;
            padding: 0.5rem 1rem;
            border-radius: 20px;
            cursor: pointer;
            margin-top: 1rem;
            transition: background 0.3s ease;
        }

        .remove-image-btn:hover {
            background: #ff3838;
        }

        .upload-details {
            margin-bottom: 2rem;
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #333;
        }

        .form-input {
            width: 100%;
            padding: 12px;
            border: 2px solid #e0e6ed;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }

        .form-input:focus {
            outline: none;
            border-color: #667eea;
        }

        .upload-submit-btn {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
        }

        .upload-submit-btn:hover:not(:disabled) {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
        }

        .upload-submit-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .uploaded-questions-section {
            margin-top: 4rem;
        }

        .questions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .question-history-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 2rem;
            border-radius: 15px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .question-history-card:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-5px);
        }

        .question-thumbnail {
            width: 100%;
            height: 150px;
            object-fit: cover;
            border-radius: 10px;
            margin-bottom: 1rem;
        }

        .question-status {
            display: inline-block;
            padding: 0.3rem 0.8rem;
            border-radius: 15px;
            font-size: 0.8rem;
            font-weight: bold;
            margin-bottom: 1rem;
        }

        .status-pending {
            background: #ffeaa7;
            color: #2d3436;
        }

        .status-processing {
            background: #74b9ff;
            color: white;
        }

        .status-solved {
            background: #00b894;
            color: white;
        }

        .status-failed {
            background: #e17055;
            color: white;
        }

        .question-date {
            font-size: 0.9rem;
            opacity: 0.8;
        }

        @media (max-width: 768px) {
            .upload-form-card {
                padding: 2rem;
                margin: 0 1rem;
            }
            
            .file-upload-area {
                padding: 2rem;
            }
            
            .questions-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            
            /* Pricing Responsive */
            .pricing-section {
                padding: 60px 0;
            }
            
            .pricing-grid {
                grid-template-columns: 1fr;
                padding: 0 1rem;
            }
            
            .pricing-card.featured {
                transform: scale(1);
            }
            
            .pricing-card.featured:hover {
                transform: translateY(-10px);
            }
            
            .pricing-toggle {
                flex-direction: column;
                width: 100%;
                padding: 0.3rem;
            }
            
            .toggle-btn {
                width: 100%;
            }
            
            .plan-price .amount {
                font-size: 2.5rem;
            }
            
            .faq-grid {
                grid-template-columns: 1fr;
            }
            
            .trust-badges {
                flex-direction: column;
                gap: 1rem;
            }
            
            .badge-item {
                text-align: center;
            }
        }
        
        .loading {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid #f3f3f3;
            border-top: 3px solid #667eea;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        /* ===== CHATBOT STYLES ===== */
        .chatbot-container {
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 10000;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        .chatbot-toggle {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border: none;
            color: white;
            cursor: pointer;
            box-shadow: 0 8px 30px rgba(102, 126, 234, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            animation: float 3s ease-in-out infinite;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }

        .chatbot-toggle:hover {
            transform: scale(1.15) translateY(-4px);
            box-shadow: 0 12px 40px rgba(102, 126, 234, 0.7);
            animation: none;
        }

        .chatbot-toggle:active {
            transform: scale(0.95);
        }

        .chatbot-toggle svg {
            width: 30px;
            height: 30px;
            filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
        }

        .chatbot-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            background: linear-gradient(135deg, #ff4444 0%, #ff6b6b 100%);
            color: white;
            border-radius: 50%;
            width: 26px;
            height: 26px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: bold;
            border: 3px solid white;
            animation: pulse 2s infinite, wiggle 0.5s ease-in-out;
            box-shadow: 0 4px 12px rgba(255, 68, 68, 0.4);
        }

        @keyframes pulse {
            0%, 100% { 
                transform: scale(1);
                box-shadow: 0 4px 12px rgba(255, 68, 68, 0.4);
            }
            50% { 
                transform: scale(1.15);
                box-shadow: 0 6px 18px rgba(255, 68, 68, 0.6);
            }
        }

        @keyframes wiggle {
            0%, 100% { transform: rotate(0deg); }
            25% { transform: rotate(-10deg); }
            75% { transform: rotate(10deg); }
        }

        .chatbot-widget {
            position: absolute;
            bottom: 90px;
            right: 0;
            width: 400px;
            height: 650px;
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            display: none;
            flex-direction: column;
            overflow: hidden;
            animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            border: 1px solid rgba(102, 126, 234, 0.1);
        }

        .chatbot-widget.active {
            display: flex;
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(30px) scale(0.95);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }

        .chatbot-header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: relative;
            overflow: hidden;
        }

        .chatbot-header::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            animation: ripple 3s linear infinite;
        }

        @keyframes ripple {
            0% { transform: scale(0.8); opacity: 0; }
            50% { opacity: 1; }
            100% { transform: scale(1.2); opacity: 0; }
        }

        .chatbot-header-content {
            display: flex;
            align-items: center;
            gap: 14px;
            position: relative;
            z-index: 1;
        }

        .chatbot-avatar {
            width: 48px;
            height: 48px;
            background: rgba(255, 255, 255, 0.25);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            animation: bounce 2s ease-in-out infinite;
        }

        @keyframes bounce {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-4px); }
        }

        .chatbot-header h3 {
            margin: 0;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.3px;
        }

        .chatbot-status {
            font-size: 13px;
            opacity: 0.95;
            margin: 0;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .chatbot-status::before {
            content: '';
            width: 8px;
            height: 8px;
            background: #4ade80;
            border-radius: 50%;
            display: inline-block;
            animation: blink 2s ease-in-out infinite;
            box-shadow: 0 0 8px #4ade80;
        }

        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }

        .chatbot-close {
            background: rgba(255, 255, 255, 0.2);
            border: none;
            color: white;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            position: relative;
            z-index: 1;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .chatbot-close:hover {
            background: rgba(255, 255, 255, 0.35);
            transform: rotate(90deg);
        }

        .chatbot-close:active {
            transform: scale(0.9) rotate(90deg);
        }

        .chatbot-messages {
            flex: 1;
            overflow-y: auto;
            padding: 24px;
            background: linear-gradient(180deg, #f8f9fa 0%, #ffffff 100%);
            display: flex;
            flex-direction: column;
            gap: 18px;
            scroll-behavior: smooth;
        }

        .chatbot-messages::-webkit-scrollbar {
            width: 6px;
        }

        .chatbot-messages::-webkit-scrollbar-track {
            background: transparent;
        }

        .chatbot-messages::-webkit-scrollbar-thumb {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 10px;
        }

        .chatbot-messages::-webkit-scrollbar-thumb:hover {
            background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
        }

        .chatbot-message {
            display: flex;
            gap: 12px;
            animation: messageSlide 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        @keyframes messageSlide {
            from {
                opacity: 0;
                transform: translateY(15px) scale(0.95);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }

        .user-message {
            flex-direction: row-reverse;
        }

        .message-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
            border: 2px solid white;
        }

        .user-message .message-avatar {
            background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            box-shadow: 0 4px 12px rgba(245, 87, 108, 0.3);
        }

        .message-content {
            background: white;
            padding: 14px 18px;
            border-radius: 16px;
            border-bottom-left-radius: 4px;
            max-width: 75%;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            position: relative;
            transition: all 0.3s ease;
        }

        .message-content:hover {
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
            transform: translateY(-2px);
        }

        .user-message .message-content {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border-bottom-right-radius: 4px;
            border-bottom-left-radius: 16px;
            box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
        }

        .user-message .message-content:hover {
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
        }

        .message-content p {
            margin: 0 0 8px 0;
        }

        .message-content p:last-child {
            margin-bottom: 0;
        }

        .message-content ul {
            margin: 8px 0;
            padding-left: 20px;
        }

        .message-content li {
            margin: 4px 0;
        }

        .typing-indicator {
            display: flex;
            gap: 4px;
            padding: 12px 16px;
        }

        .typing-indicator span {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #667eea;
            animation: typing 1.4s infinite;
        }

        .typing-indicator span:nth-child(2) {
            animation-delay: 0.2s;
        }

        .typing-indicator span:nth-child(3) {
            animation-delay: 0.4s;
        }

        @keyframes typing {
            0%, 60%, 100% {
                transform: translateY(0);
            }
            30% {
                transform: translateY(-10px);
            }
        }

        .chatbot-suggestions {
            padding: 16px 24px;
            background: white;
            border-top: 1px solid #e8e8e8;
            display: flex;
            gap: 10px;
            overflow-x: auto;
            scroll-behavior: smooth;
        }

        .chatbot-suggestions::-webkit-scrollbar {
            height: 4px;
        }

        .chatbot-suggestions::-webkit-scrollbar-track {
            background: transparent;
        }

        .chatbot-suggestions::-webkit-scrollbar-thumb {
            background: #ddd;
            border-radius: 10px;
        }

        .suggestion-btn {
            padding: 10px 18px;
            background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
            border: 2px solid #e0e0e0;
            border-radius: 24px;
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            white-space: nowrap;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
        }

        .suggestion-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            transition: left 0.3s ease;
            z-index: -1;
        }

        .suggestion-btn:hover {
            color: white;
            border-color: #667eea;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
        }

        .suggestion-btn:hover::before {
            left: 0;
        }

        .suggestion-btn:active {
            transform: translateY(0) scale(0.95);
        }

        .chatbot-input-container {
            padding: 20px 24px;
            background: white;
            border-top: 1px solid #e8e8e8;
            display: flex;
            gap: 14px;
            align-items: flex-end;
            box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.03);
        }

        .chatbot-input {
            flex: 1;
            border: 2px solid #e8e8e8;
            border-radius: 26px;
            padding: 14px 20px;
            font-size: 14px;
            resize: none;
            font-family: inherit;
            max-height: 120px;
            transition: all 0.3s ease;
            background: #f8f9fa;
        }

        .chatbot-input:focus {
            outline: none;
            border-color: #667eea;
            background: white;
            box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
        }

        .chatbot-input::placeholder {
            color: #999;
        }

        .chatbot-send {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border: none;
            color: white;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            flex-shrink: 0;
            box-shadow: 0 4px 16px rgba(102, 126, 234, 0.4);
            position: relative;
            overflow: hidden;
        }

        .chatbot-send::before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
            transform: scale(0);
            transition: transform 0.3s ease;
        }

        .chatbot-send:hover {
            transform: scale(1.1) rotate(15deg);
            box-shadow: 0 6px 24px rgba(102, 126, 234, 0.6);
        }

        .chatbot-send:hover::before {
            transform: scale(1);
        }

        .chatbot-send:active {
            transform: scale(0.9) rotate(0deg);
        }

        .chatbot-send svg {
            position: relative;
            z-index: 1;
        }

        @media (max-width: 768px) {
            .chatbot-widget {
                width: calc(100vw - 40px);
                height: calc(100vh - 100px);
                bottom: 70px;
                right: 20px;
            }

            .chatbot-container {
                bottom: 10px;
                right: 10px;
            }
        }