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#0000001f}.feature-icon{width:80px;height:80px;background:linear-gradient(135deg,#1a5490,#2980b9);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1.5rem;transition:all .3s ease}.feature-card:hover .feature-icon{background:linear-gradient(135deg,#f39c12,#e67e22);transform:scale(1.1) rotate(10deg)}.feature-icon svg{width:40px;height:40px;color:#fff}.feature-card h3{font-size:1.5rem;font-weight:700;color:#1a5490;margin-bottom:1rem}.feature-card p{font-size:1.1rem;color:#7f8c8d;line-height:1.8}@media (max-width: 1200px){.hero-content{gap:3rem}.hero-title{font-size:3.5rem}.title-teacher{font-size:2.2rem}.title-name{font-size:4.5rem}.hero-description-1{font-size:1.6rem}.hero-description-2{font-size:1.4rem}.image-container{width:400px;height:400px}}@media (max-width: 968px){.hero{padding-top:68px;padding-bottom:3rem}.scroll-indicator{bottom:6px;z-index:0}.mouse{animation:bounceSubtle 2s 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p{font-size:1.1rem;color:#7f8c8d}.lesson-item{background:#fff;padding:1.5rem;border-radius:20px;box-shadow:0 4px 20px #00000014;display:grid;grid-template-columns:auto 350px 1fr auto;gap:1.5rem;align-items:center;transition:all .3s ease}.lesson-item:hover{box-shadow:0 8px 30px #1a549026;transform:translateY(-2px)}.lesson-number{width:50px;height:50px;background:linear-gradient(135deg,#1a5490,#2980b9);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700}.lesson-poster{position:relative;width:350px;height:250px;border-radius:12px;overflow:hidden;background:#1a5490;box-shadow:0 4px 15px #0000001a}.lesson-poster img{width:100%;height:100%;object-fit:contain;object-position:center;transition:transform .4s ease}.lesson-item:hover .lesson-poster img{transform:scale(1.1)}.lesson-details{flex:1}.lesson-details h3{font-size:1.5rem;color:#2c3e50;margin-bottom:.5rem}.lesson-details p{color:#7f8c8d;margin-bottom:1rem;line-height:1.6}.lesson-meta{display:flex;gap:1.5rem;margin-bottom:.75rem}.meta-item{display:flex;align-items:center;gap:.5rem;color:#1a5490;font-weight:600}.meta-item svg{width:18px;height:18px}.vimeo-link{display:inline-flex;align-items:center;gap:.5rem;color:#2980b9;text-decoration:none;font-weight:600;transition:all .3s ease}.vimeo-link svg{width:16px;height:16px}.vimeo-link:hover{color:#1a5490;text-decoration:underline}.lesson-actions{display:flex;flex-direction:column;gap:.75rem}.lesson-actions button{padding:.75rem 1.25rem;border:none;border-radius:8px;font-size:.95rem;font-weight:600;font-family:Cairo,sans-serif;cursor:pointer;display:flex;align-items:center;gap:.5rem;transition:all .3s ease;white-space:nowrap}.lesson-actions button svg{width:18px;height:18px}.lesson-actions .edit-btn{background:#3498db;color:#fff}.lesson-actions .edit-btn:hover{background:#2980b9;transform:translateY(-2px)}.lesson-actions .delete-btn{background:#e74c3c;color:#fff}.lesson-actions .delete-btn:hover{background:#c0392b;transform:translateY(-2px)}.loading-container{display:flex;justify-content:center;align-items:center;min-height:100vh}.spinner{width:50px;height:50px;border:4px solid #ecf0f1;border-top-color:#1a5490;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:1rem}.error-container h2{color:#e74c3c;font-size:2rem}.error-container button{padding:1rem 2rem;background:#1a5490;color:#fff;border:none;border-radius:10px;font-size:1.1rem;font-weight:700;font-family:Cairo,sans-serif;cursor:pointer}@media (max-width: 1200px){.lesson-item{grid-template-columns:auto 300px 1fr;grid-template-rows:auto auto}.lesson-poster{width:300px;height:250px}.lesson-actions{grid-column:1 / -1;flex-direction:row;justify-content:flex-end}}@media (max-width: 1024px){.lesson-item{grid-template-columns:auto 250px 1fr}.lesson-poster{width:250px;height:250px}}@media (max-width: 768px){.admin-course-content{padding:1rem}.course-content-header{padding:1.5rem}.course-info h1{font-size:1.8rem}.lesson-item{grid-template-columns:1fr;grid-template-rows:auto;text-align:center}.lesson-number{margin:0 auto}.lesson-poster{width:100%;max-width:500px;height:250px;margin:0 auto}.lesson-meta{justify-content:center;flex-wrap:wrap}.lesson-actions{flex-direction:column}}.not-found{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#0a1929,#1a5490,#2980b9);padding:2rem}.not-found-content{text-align:center;color:#fff;max-width:600px}.error-animation{position:relative;margin-bottom:3rem}.error-number{font-size:12rem;font-weight:800;color:#ffffff1a;line-height:1;animation:glitch 2s infinite}@keyframes glitch{0%,to{transform:translate(0)}20%{transform:translate(-5px,5px)}40%{transform:translate(-5px,-5px)}60%{transform:translate(5px,5px)}80%{transform:translate(5px,-5px)}}.error-icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.error-icon svg{width:120px;height:120px;color:#f39c12;animation:bounce 2s infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}.not-found-content h1{font-size:2.5rem;font-weight:800;margin-bottom:1rem;color:#fff}.not-found-content p{font-size:1.3rem;color:#ecf0f1;margin-bottom:3rem;line-height:1.8}.not-found-actions{display:flex;gap:1.5rem;justify-content:center;flex-wrap:wrap}.home-btn,.back-btn{background:#f39c12;color:#fff;border:none;padding:1.2rem 2.5rem;font-size:1.2rem;font-weight:700;border-radius:30px;cursor:pointer;display:flex;align-items:center;gap:.8rem;transition:all .3s ease;font-family:Cairo,sans-serif}.back-btn{background:transparent;border:2px solid white}.home-btn:hover{background:#e67e22;transform:translateY(-3px);box-shadow:0 10px 30px #f39c1266}.back-btn:hover{background:#fff;color:#1a5490;transform:translateY(-3px)}.home-btn svg,.back-btn svg{width:24px;height:24px}@media (max-width: 768px){.error-number{font-size:8rem}.error-icon svg{width:80px;height:80px}.not-found-content h1{font-size:2rem}.not-found-content p{font-size:1.1rem}.not-found-actions{flex-direction:column}.home-btn,.back-btn{width:100%;justify-content:center}}@media (max-width: 480px){.error-number{font-size:6rem}.error-icon svg{width:60px;height:60px}.not-found-content h1{font-size:1.7rem}.not-found-content p{font-size:1rem}.home-btn,.back-btn{padding:1rem 2rem;font-size:1.1rem}}:root{--primary-color: #1a5490;--secondary-color: #2980b9;--accent-color: #f39c12;--dark-bg: #0a1929;--light-bg: #f8f9fa;--text-dark: #2c3e50;--text-light: #ecf0f1;--success-color: #27ae60;--danger-color: #e74c3c;--shadow: 0 4px 20px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 40px rgba(0, 0, 0, .15)}body{font-family:Cairo,sans-serif;background:var(--light-bg);color:var(--text-dark);line-height:1.6;overflow-x:hidden}#root{min-height:100vh}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Cairo,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}html{scroll-behavior:smooth}