*{box-sizing:border-box;margin:0;padding:0}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f5f5f5;color:#333;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.container{margin:0 auto;max-width:1200px;padding:0 20px}.btn{border:none;border-radius:5px;cursor:pointer;font-size:16px;padding:10px 20px;transition:all .3s ease}.btn-primary{background-color:#1e3a8a;color:#fff}.btn-primary:hover{background-color:#3b82f6}.card{background:#fff;border-radius:10px;box-shadow:0 2px 10px #0000001a;overflow:hidden;transition:transform .3s ease}.card:hover{transform:translateY(-5px)}.header{background:#fff;box-shadow:0 2px 10px #0000001a;position:sticky;top:0;z-index:1000}.header-content{align-items:center;display:flex;justify-content:space-between;padding:15px 0}.logo{color:#333;text-decoration:none}.logo h1{font-size:1.8rem;font-weight:700;margin:0}.regular-link{text-decoration:none}.nav{align-items:center;display:flex;gap:30px}.nav-link{border-radius:5px;color:#333;font-weight:500;padding:8px 16px;text-decoration:none;transition:all .3s ease}.nav-link:hover{background-color:#f0f0f0;color:#1e3a8a}.nav-dropdown{display:inline-block;position:relative}.dropdown-trigger{cursor:pointer}.dropdown-menu{background:#fff;border:1px solid #e0e0e0;border-radius:8px;box-shadow:0 4px 12px #00000026;left:0;min-width:150px;overflow:visible;position:absolute;top:100%;z-index:1000}.dropdown-item{border-bottom:1px solid #f0f0f0;color:#333;display:block;font-weight:500;padding:12px 16px;position:relative;text-decoration:none;transition:all .3s ease}.dropdown-item:last-child{border-bottom:none}.dropdown-item:hover{background-color:#eff6ff;color:#1e3a8a}.has-submenu{align-items:center;display:flex;justify-content:space-between;overflow:visible;position:relative}.has-submenu:after{content:"▶";font-size:.7rem;margin-left:8px;transition:transform .3s ease}.has-submenu:hover:after{transform:rotate(90deg)}.submenu{background:#fff;border:1px solid #e0e0e0;border-radius:8px;box-shadow:0 4px 12px #00000026;display:block;left:calc(100% + 5px);min-width:120px;opacity:1;overflow:visible;position:absolute;top:0;visibility:visible;z-index:1001}.submenu-item{border-bottom:1px solid #f0f0f0;color:#333;display:block;font-size:.9rem;font-weight:500;padding:10px 16px;text-decoration:none;transition:all .3s ease;white-space:nowrap}.submenu-item:last-child{border-bottom:none}.submenu-item:hover{background-color:#eff6ff;color:#1e3a8a}.sign-in-btn{background-color:#1e3a8a;border:none;border-radius:5px;color:#fff;cursor:pointer;font-weight:500;padding:8px 16px;transition:all .3s ease}.sign-in-btn:hover{background-color:#3b82f6}.user-dropdown{display:inline-block;position:relative}.user-name{border-radius:5px;color:#1e3a8a;cursor:pointer;font-weight:600;padding:8px 16px;transition:all .3s ease}.user-name:hover{background-color:#eff6ff}.user-dropdown-menu{left:auto;min-width:180px;right:0}.user-info{align-items:center;background-color:#f8f9fa;display:flex;font-weight:600;gap:10px}.user-avatar{font-size:1.2rem}.sign-out-btn{background:none;border:none;color:#dc3545;cursor:pointer;text-align:left;width:100%}.sign-out-btn:hover{background-color:#fef2f2;color:#dc3545}@media (max-width:768px){.header-content{flex-direction:column;gap:15px}.nav{flex-wrap:wrap;gap:15px;justify-content:center}.logo h1{font-size:1.5rem}}.subject-card{flex-direction:column;gap:20px;padding:30px;text-align:center}.subject-card,.subject-icon{align-items:center;display:flex}.subject-icon{border-radius:50%;font-size:2rem;height:80px;justify-content:center;width:80px}.subject-content h3{color:#333;font-size:1.5rem;margin-bottom:10px}.subject-content p{color:#666;line-height:1.6;margin-bottom:20px}.btn-large{font-size:1.1rem;font-weight:600;padding:15px 30px}.features-section{background-color:#eff6ff}.features-grid{grid-gap:30px;display:grid;gap:30px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));margin-top:40px}.feature{padding:30px 20px;text-align:center}.feature-icon{font-size:3rem;margin-bottom:20px}.feature h3{color:#333;font-size:1.3rem;margin-bottom:15px}.feature p{color:#666;line-height:1.6}@media (max-width:768px){.subject-card{padding:20px}.subject-icon{font-size:1.5rem;height:60px;width:60px}.features-grid{gap:20px;grid-template-columns:1fr}}.video-card{overflow:hidden;transition:transform .3s ease,box-shadow .3s ease}.video-card:hover{box-shadow:0 8px 25px #00000026;transform:translateY(-5px)}.video-thumbnail{height:200px;overflow:hidden;position:relative;width:100%}.video-thumbnail img{height:100%;object-fit:cover;transition:transform .3s ease;width:100%}.video-card:hover .video-thumbnail img{transform:scale(1.05)}.video-duration{background:#000c;border-radius:4px;bottom:10px;color:#fff;font-size:.8rem;font-weight:500;padding:4px 8px;position:absolute;right:10px}.play-overlay{align-items:center;background:#000000b3;border-radius:50%;color:#fff;display:flex;height:50px;justify-content:center;left:50%;opacity:0;position:absolute;top:50%;transform:translate(-50%,-50%);transition:opacity .3s ease;width:50px}.video-card:hover .play-overlay{opacity:1}.play-overlay span{font-size:1.2rem}.video-info{padding:20px}.video-meta{gap:10px;margin-bottom:15px}.level-badge,.subject-badge{padding:4px 12px}.video-title{line-height:1.4;margin-bottom:10px}.video-title a{color:#333;font-size:1.1rem;font-weight:600;text-decoration:none;transition:color .3s ease}.video-title a:hover{color:#1e3a8a}.video-description{-webkit-line-clamp:2;-webkit-box-orient:vertical;color:#666;display:-webkit-box;font-size:.9rem;line-height:1.5;margin-bottom:15px;overflow:hidden}.video-footer{align-items:center;color:#666;display:flex;font-size:.85rem;justify-content:space-between}.video-actions{align-items:flex-end;display:flex;flex-direction:column;gap:8px}.check-later-btn{background-color:#eff6ff;border:2px solid #dbeafe;border-radius:20px;color:#1e3a8a;cursor:pointer;font-size:.8rem;font-weight:500;padding:6px 12px;transition:all .3s ease;white-space:nowrap}.check-later-btn:hover{background-color:#dbeafe;border-color:#1e3a8a}.check-later-btn.checked{background-color:#dcfce7;border-color:#bbf7d0;color:#166534}.check-later-btn.checked:hover{background-color:#bbf7d0}.video-stats{align-items:center;display:flex;gap:5px}@media (max-width:768px){.video-info{padding:15px}.video-title a{font-size:1rem}.video-footer{align-items:flex-start;flex-direction:column;gap:8px}}.video-list{padding:40px 0}.page-header{margin-bottom:40px;text-align:center}.page-header h1{color:#333;font-size:2.5rem;margin-bottom:10px}.page-header p{color:#666;font-size:1.1rem}.videos-grid{grid-gap:30px;display:grid;gap:30px;grid-template-columns:repeat(auto-fill,minmax(350px,1fr))}.loading{align-items:center;display:flex;flex-direction:column;justify-content:center;padding:60px 0}.spinner{animation:spin 1s linear infinite;border:4px solid #f3f3f3;border-radius:50%;border-top-color:#1e3a8a;height:40px;margin-bottom:20px;width:40px}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.loading p{color:#666;font-size:1.1rem}.no-videos{padding:1px 0;text-align:center}.no-videos h2{color:#333;font-size:2rem;margin-bottom:15px}.no-videos p{color:#666;font-size:1.1rem}@media (max-width:768px){.page-header h1{font-size:2rem}.videos-grid{gap:20px;grid-template-columns:1fr}}.video-player-page{padding:40px 0}.video-content{grid-gap:40px;align-items:start;display:grid;gap:40px;grid-template-columns:2fr 1fr}.video-container{background:#000;border-radius:10px;overflow:hidden;padding-bottom:56.25%;position:relative;width:100%}.video-container iframe{border:none;height:100%;left:0;position:absolute;top:0;width:100%}.video-details{margin-top:30px}.video-title{color:#333;font-size:2rem;line-height:1.3;margin-bottom:20px}.video-header{align-items:flex-start;display:flex;gap:20px;justify-content:space-between;margin-bottom:20px}.video-header .video-title{flex:1 1;margin-bottom:0}.check-later-btn-large{background-color:#eff6ff;border:2px solid #dbeafe;border-radius:25px;color:#1e3a8a;cursor:pointer;flex-shrink:0;font-size:1rem;font-weight:600;padding:12px 20px;transition:all .3s ease;white-space:nowrap}.check-later-btn-large:hover{background-color:#dbeafe;border-color:#1e3a8a;transform:translateY(-2px)}.check-later-btn-large.checked{background-color:#dcfce7;border-color:#bbf7d0;color:#166534}.check-later-btn-large.checked:hover{background-color:#bbf7d0}.video-meta{align-items:center;border-bottom:1px solid #eee;display:flex;justify-content:space-between;margin-bottom:25px;padding-bottom:20px}.meta-left{color:#666;display:flex;font-size:.9rem;gap:20px}.meta-right{display:flex;gap:10px}.level-badge,.subject-badge{border-radius:20px;font-size:.8rem;font-weight:500;padding:6px 12px;text-transform:capitalize}.subject-badge{color:#fff}.level-badge{background-color:#f0f0f0;color:#666}.instructor-info{align-items:center;background-color:#eff6ff;border-radius:10px;display:flex;gap:15px;margin-bottom:25px;padding:20px}.instructor-avatar{font-size:2rem}.instructor-details h3{color:#333;margin:0 0 5px}.instructor-details p{color:#666;font-size:.9rem;margin:0}.video-description{margin-bottom:25px}.video-description h3{color:#333;margin-bottom:10px}.video-description p{color:#666;line-height:1.6}.video-topics h3{color:#333;margin-bottom:15px}.topics-list{display:flex;flex-wrap:wrap;gap:10px}.topic-tag{background-color:#dbeafe;border-radius:20px;color:#1e3a8a;font-size:.85rem;font-weight:500;padding:6px 12px}.video-sidebar{background:#fff;border-radius:10px;box-shadow:0 2px 10px #0000001a;height:fit-content;padding:25px}.video-sidebar h3{color:#333;margin-bottom:20px}.related-videos{display:flex;flex-direction:column;gap:15px}.related-video-card{border-radius:8px;color:inherit;display:flex;gap:12px;padding:10px;text-decoration:none;transition:background-color .3s ease}.related-video-card:hover{background-color:#f8f9fa}.related-video-card img{border-radius:6px;height:68px;object-fit:cover;width:120px}.related-video-info{flex:1 1}.related-video-info h4{color:#333;font-size:.9rem;line-height:1.3;margin:0 0 5px}.related-video-info p{color:#666;font-size:.8rem;margin:0 0 5px}.related-video-info .duration{color:#999;font-size:.75rem}.video-not-found{padding:60px 0;text-align:center}.video-not-found h2{color:#333;font-size:2rem;margin-bottom:15px}.video-not-found p{color:#666;font-size:1.1rem;margin-bottom:30px}@media (max-width:1024px){.video-content{gap:30px;grid-template-columns:1fr}.video-sidebar{order:-1}}@media (max-width:768px){.video-title{font-size:1.5rem}.video-header{align-items:stretch;flex-direction:column;gap:15px}.check-later-btn-large{align-self:flex-start;font-size:.9rem;padding:10px 16px}.video-meta{align-items:flex-start;flex-direction:column;gap:15px}.meta-left{gap:15px}.instructor-info{flex-direction:column;text-align:center}.related-video-card img{height:56px;width:100px}}.App{display:flex;flex-direction:column;min-height:100vh}.main-content{flex:1 1;padding:20px 0}.hero-section{background:linear-gradient(135deg,#1e3a8a,#3b82f6);color:#fff;padding:80px 0;text-align:center}.hero-section h1{font-size:3rem;font-weight:700;margin-bottom:20px}.hero-section p{font-size:1.2rem;margin-bottom:30px;opacity:.9}.section{padding:60px 0}.section-title{color:#333;font-size:2.5rem;margin-bottom:40px;text-align:center}.grid{grid-gap:30px;display:grid;gap:30px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));margin-top:40px}@media (max-width:768px){.hero-section h1{font-size:2rem}.hero-section p{font-size:1rem}.section-title{font-size:2rem}}
/*# sourceMappingURL=main.3d54a19e.css.map*/