/* FILE: style.css - Complete Modern UI */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --primary: #00e5ff;
    --primary-dark: #00b8d4;
    --secondary: #ff3b5c;
    --dark: #0a0c10;
    --darker: #05070c;
    --card: #11141f;
    --card-light: #1a1e2e;
    --text: #eef5ff;
    --text-muted: #8a94a8;
    --border: #1e2538;
    --gradient: linear-gradient(135deg, #00e5ff, #ff3b5c);
    --glow: 0 0 20px rgba(0,229,255,0.3);
}
body { font-family: 'Inter', sans-serif; background: var(--dark); color: var(--text); overflow-x: hidden; }
body.auth-page { background: linear-gradient(135deg, #0a0c10, #0f1219); min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.loader { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: var(--dark); z-index: 9999; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 20px; }
.spinner { width: 50px; height: 50px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.toast { position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%); background: var(--card); color: white; padding: 12px 24px; border-radius: 40px; z-index: 10000; border-left: 4px solid var(--primary); display: none; align-items: center; gap: 10px; backdrop-filter: blur(10px); font-weight: 500; }
.container { max-width: 1400px; margin: 0 auto; padding: 0 24px; }
.header { background: rgba(5, 7, 12, 0.95); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.navbar { display: flex; justify-content: space-between; align-items: center; padding: 16px 0; flex-wrap: wrap; }
.logo { font-size: 1.6rem; font-weight: 800; font-family: 'Orbitron', monospace; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.logo i { background: none; -webkit-background-clip: unset; color: var(--primary); margin-right: 5px; }
.nav-menu { display: flex; gap: 32px; align-items: center; }
.nav-menu a { text-decoration: none; color: var(--text-muted); font-weight: 500; transition: 0.2s; font-size: 0.95rem; }
.nav-menu a:hover, .nav-menu a.active { color: var(--primary); }
.nav-right { display: flex; align-items: center; gap: 20px; }
.profile-icon { display: flex; align-items: center; gap: 8px; background: var(--card); padding: 6px 14px; border-radius: 40px; cursor: pointer; border: 1px solid var(--border); transition: 0.2s; }
.profile-icon:hover { border-color: var(--primary); }
.profile-icon i { color: var(--primary); font-size: 1.2rem; }
.btn-primary { background: var(--gradient); border: none; padding: 10px 24px; border-radius: 40px; font-weight: 700; color: #000; cursor: pointer; transition: 0.2s; text-decoration: none; display: inline-block; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--glow); }
.btn-outline { background: transparent; border: 2px solid var(--primary); color: var(--primary); padding: 8px 22px; border-radius: 40px; font-weight: 600; cursor: pointer; text-decoration: none; display: inline-block; transition: 0.2s; }
.btn-outline:hover { background: var(--primary); color: #000; }
.btn-large { padding: 14px 36px; font-size: 1.1rem; }
.btn-full { width: 100%; text-align: center; }
.btn-danger { background: var(--secondary); border: none; padding: 10px 24px; border-radius: 40px; color: white; font-weight: 700; cursor: pointer; }
.hamburger { display: none; font-size: 1.8rem; cursor: pointer; color: var(--primary); }
.hero { position: relative; min-height: 90vh; display: flex; align-items: center; overflow: hidden; }
.hero-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: radial-gradient(circle at 30% 40%, #0f1220, #05070c); z-index: -1; }
.hero-content { max-width: 800px; padding: 80px 0; }
.hero-badge { display: inline-block; background: rgba(0,229,255,0.1); padding: 6px 16px; border-radius: 40px; font-size: 0.85rem; color: var(--primary); margin-bottom: 24px; }
.hero h1 { font-size: 3.5rem; font-weight: 800; font-family: 'Orbitron', monospace; line-height: 1.2; margin-bottom: 20px; }
.gradient-text { background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { font-size: 1.2rem; color: var(--text-muted); margin-bottom: 32px; }
.hero-buttons { display: flex; gap: 20px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-stats { display: flex; gap: 48px; }
.hero-stats div span { display: block; font-size: 2rem; font-weight: 800; color: var(--primary); }
.section-title { font-size: 2.5rem; text-align: center; margin-bottom: 48px; font-family: 'Orbitron', monospace; }
.features-grid, .course-grid, .product-grid, .materials-grid, .tests-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; margin: 40px 0; }
.feature-card, .course-card, .product-card { background: var(--card); border-radius: 24px; padding: 32px; text-align: center; transition: 0.3s; border: 1px solid var(--border); }
.feature-card:hover, .course-card:hover { transform: translateY(-8px); border-color: var(--primary); box-shadow: var(--glow); }
.feature-card i, .course-card i { font-size: 2.5rem; color: var(--primary); margin-bottom: 20px; }
.auth-wrapper { display: flex; justify-content: center; align-items: center; min-height: 100vh; padding: 20px; }
.auth-card { background: var(--card); border-radius: 32px; padding: 40px; max-width: 480px; width: 100%; border: 1px solid var(--border); }
.auth-header { text-align: center; margin-bottom: 32px; }
.back-home { position: absolute; top: 30px; left: 30px; color: var(--text-muted); font-size: 1.2rem; }
.auth-tabs { display: flex; gap: 12px; margin-bottom: 24px; }
.tab-btn { flex: 1; padding: 12px; background: var(--darker); border: none; border-radius: 40px; color: var(--text); font-weight: 600; cursor: pointer; transition: 0.2s; }
.tab-btn.active { background: var(--primary); color: #000; }
.auth-tab-panel { display: none; }
.auth-tab-panel.active { display: block; }
.input-group { display: flex; align-items: center; background: var(--darker); border-radius: 50px; margin-bottom: 16px; border: 1px solid var(--border); transition: 0.2s; }
.input-group:focus-within { border-color: var(--primary); }
.input-group i { padding: 0 16px; color: var(--text-muted); }
.input-group input { flex: 1; padding: 14px 16px 14px 0; background: none; border: none; color: white; outline: none; }
.forgot-link { display: block; text-align: center; margin-top: 16px; color: var(--primary); text-decoration: none; font-size: 0.85rem; }
.auth-divider { text-align: center; margin: 24px 0; position: relative; }
.auth-divider span { background: var(--card); padding: 0 16px; color: var(--text-muted); font-size: 0.85rem; }
.btn-google { width: 100%; background: #fff; color: #000; border: none; padding: 12px; border-radius: 50px; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 10px; }
.auth-footer { text-align: center; margin-top: 24px; color: var(--text-muted); }
.auth-footer a { color: var(--primary); text-decoration: none; }
.admin-body { background: var(--darker); }
.admin-container { display: flex; min-height: 100vh; }
.admin-sidebar { width: 280px; background: var(--card); border-right: 1px solid var(--border); padding: 30px 20px; display: flex; flex-direction: column; }
.admin-logo { font-size: 1.3rem; font-weight: 800; color: var(--primary); margin-bottom: 40px; text-align: center; }
.admin-nav { display: flex; flex-direction: column; gap: 8px; flex: 1; }
.admin-nav-btn { background: transparent; border: none; padding: 12px 16px; border-radius: 12px; color: var(--text-muted); font-weight: 500; cursor: pointer; text-align: left; transition: 0.2s; display: flex; align-items: center; gap: 12px; }
.admin-nav-btn:hover, .admin-nav-btn.active { background: rgba(0,229,255,0.1); color: var(--primary); }
.admin-logout { background: var(--secondary); border: none; padding: 12px; border-radius: 12px; color: white; font-weight: 600; cursor: pointer; margin-top: 20px; }
.admin-main { flex: 1; padding: 24px; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.admin-content { background: var(--card-light); border-radius: 24px; padding: 24px; }
.admin-form-card { background: var(--card); border-radius: 20px; padding: 24px; margin-bottom: 24px; }
.admin-form-card input, .admin-form-card textarea { width: 100%; padding: 12px; background: var(--darker); border: 1px solid var(--border); border-radius: 12px; color: white; margin: 8px 0; }
.page-header { text-align: center; padding: 60px 0 30px; }
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 40px; }
.contact-card { background: var(--card); border-radius: 20px; padding: 30px; text-align: center; }
.contact-card i { font-size: 2.5rem; color: var(--primary); margin-bottom: 15px; }
.contact-form input, .contact-form textarea { width: 100%; padding: 14px; background: var(--card); border: 1px solid var(--border); border-radius: 12px; color: white; margin: 10px 0; }
.settings-card { max-width: 600px; margin: 0 auto; background: var(--card); border-radius: 24px; padding: 32px; }
.settings-section { margin-bottom: 32px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.settings-section h3 { margin-bottom: 20px; color: var(--primary); }
.footer { background: var(--darker); text-align: center; padding: 48px 20px; margin-top: 60px; border-top: 1px solid var(--border); }
.social-links { display: flex; justify-content: center; gap: 20px; margin: 20px 0; }
.social-links a { color: var(--text-muted); font-size: 1.3rem; transition: 0.2s; }
.social-links a:hover { color: var(--primary); }
.floating-chat { position: fixed; bottom: 28px; right: 28px; background: var(--primary); width: 56px; height: 56px; border-radius: 30px; display: flex; align-items: center; justify-content: center; color: #000; font-size: 1.6rem; cursor: pointer; box-shadow: var(--glow); z-index: 1100; }
.floating-chat span { position: absolute; right: 70px; background: var(--card); padding: 6px 12px; border-radius: 20px; font-size: 0.75rem; opacity: 0; transition: 0.2s; white-space: nowrap; }
.floating-chat:hover span { opacity: 1; }
@media (max-width: 768px) { .nav-menu { display: none; } .hamburger { display: block; } .hero h1 { font-size: 2rem; } .hero-stats { gap: 24px; } .admin-sidebar { width: 80px; } .admin-sidebar .admin-logo, .admin-sidebar .admin-nav-btn span { display: none; } .admin-nav-btn i { font-size: 1.3rem; } .admin-nav-btn { justify-content: center; } }