:root{--primary-color: #ff6b6b;--secondary-color: #4ecdc4;--accent-color: #45b7d1;--dark-color: #2c3e50;--light-color: #ecf0f1;--text-color: #2c3e50;--text-light: #7f8c8d;--border-color: #bdc3c7;--success-color: #27ae60;--warning-color: #f39c12;--error-color: #e74c3c;--gradient-primary: linear-gradient(135deg, #ff6b6b, #ee5a52);--gradient-secondary: linear-gradient(135deg, #4ecdc4, #44a08d);--shadow-light: 0 2px 10px rgba(0,0,0,.1);--shadow-medium: 0 4px 20px rgba(0,0,0,.15);--shadow-heavy: 0 8px 30px rgba(0,0,0,.2);--border-radius: 8px;--transition: all .3s ease}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:var(--text-color);background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;position:relative;overflow-x:hidden}.bg-decoration{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:-1;overflow:hidden}.bg-decoration:before,.bg-decoration:after{content:"";position:absolute;border-radius:50%;background:#ffffff1a;animation:float 6s ease-in-out infinite}.bg-decoration:before{width:200px;height:200px;top:10%;left:10%;animation-delay:0s}.bg-decoration:after{width:150px;height:150px;top:60%;right:10%;animation-delay:3s}@keyframes float{0%,to{transform:translateY(0) rotate(0);opacity:.7}50%{transform:translateY(-20px) rotate(180deg);opacity:1}}.bg-decoration{background-image:radial-gradient(circle at 20% 80%,rgba(120,119,198,.3) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(255,107,107,.3) 0%,transparent 50%),radial-gradient(circle at 40% 40%,rgba(78,205,196,.3) 0%,transparent 50%)}.container{max-width:1200px;margin:0 auto;padding:0 20px}h1,h2,h3,h4,h5,h6{font-weight:600;margin-bottom:1rem;line-height:1.2}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.75rem}h4{font-size:1.5rem}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-bottom:1rem;color:var(--text-light)}a{color:var(--primary-color);text-decoration:none;transition:var(--transition)}a:hover{color:var(--accent-color)}.btn{display:inline-block;padding:12px 24px;border:none;border-radius:var(--border-radius);font-size:1rem;font-weight:500;text-align:center;text-decoration:none;cursor:pointer;transition:var(--transition);position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}.btn:hover:before{left:100%}.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:var(--shadow-light)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-medium)}.btn-secondary{background:var(--gradient-secondary);color:#fff;box-shadow:var(--shadow-light)}.btn-outline{background:transparent;color:var(--primary-color);border:2px solid var(--primary-color)}.btn-outline:hover{background:var(--primary-color);color:#fff}.btn-large{padding:16px 32px;font-size:1.1rem}.btn-full{width:100%}.header{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:var(--shadow-light);position:fixed;top:0;left:0;right:0;z-index:1000;transition:var(--transition)}.header-content{display:flex;align-items:center;justify-content:space-between;padding:1rem 0}.logo{display:flex;align-items:center;gap:12px}.logo img{width:40px;height:40px;border-radius:50%;-o-object-fit:cover;object-fit:cover}.logo h1{font-size:1.5rem;color:var(--primary-color);margin:0}.nav-list{display:flex;list-style:none;gap:2rem;margin:0}.nav-link{color:var(--text-color);font-weight:500;padding:8px 16px;border-radius:var(--border-radius);transition:var(--transition)}.nav-link:hover,.nav-link.active{background:var(--gradient-primary);color:#fff}.user-actions,.user-menu{display:flex;align-items:center;gap:12px}.username{font-weight:500;color:var(--primary-color)}.hidden{display:none!important}.main{margin-top:80px;min-height:calc(100vh - 80px)}.section{padding:4rem 0}.hero{text-align:center;padding:4rem 0;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:var(--border-radius);margin-bottom:3rem}.hero h2{font-size:3rem;color:#fff;margin-bottom:1rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.hero p{font-size:1.2rem;color:#ffffffe6;margin-bottom:2rem;max-width:600px;margin-left:auto;margin-right:auto}.hero-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:2rem;margin-top:2rem}.video-card{background:#fff;border-radius:var(--border-radius);overflow:hidden;box-shadow:var(--shadow-light);transition:var(--transition);cursor:pointer}.video-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-medium)}.video-thumbnail{position:relative;width:100%;height:200px;overflow:hidden}.video-thumbnail img{width:100%;height:100%;-o-object-fit:cover;object-fit:cover;transition:var(--transition)}.video-card:hover .video-thumbnail img{transform:scale(1.05)}.video-duration{position:absolute;bottom:8px;right:8px;background:#000c;color:#fff;padding:4px 8px;border-radius:4px;font-size:.8rem}.video-info{padding:1rem}.video-title{font-size:1.1rem;font-weight:600;margin-bottom:.5rem;color:var(--text-color);line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.video-description{color:var(--text-light);font-size:.9rem;line-height:1.4;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.video-meta{display:flex;justify-content:space-between;align-items:center;margin-top:.5rem;font-size:.8rem;color:var(--text-light)}.category-filters{display:flex;gap:1rem;margin-bottom:2rem;flex-wrap:wrap}.filter-btn{padding:8px 16px;border:2px solid var(--border-color);background:#fff;color:var(--text-color);border-radius:var(--border-radius);cursor:pointer;transition:var(--transition)}.filter-btn:hover,.filter-btn.active{background:var(--gradient-primary);color:#fff;border-color:transparent}.sort-options{margin-bottom:2rem}.sort-options select{padding:8px 16px;border:2px solid var(--border-color);border-radius:var(--border-radius);background:#fff;color:var(--text-color);cursor:pointer}.load-more{text-align:center;margin-top:3rem}.section h2{text-align:center;color:#fff;margin-bottom:2rem;font-size:2.5rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.featured-videos h3,.section h3{color:#fff;margin-bottom:1.5rem;font-size:1.8rem}@media (max-width: 768px){.container{padding:0 15px}.header-content{flex-direction:column;gap:1rem;padding:.5rem 0}.nav-list{gap:1rem}.hero h2{font-size:2rem}.hero p{font-size:1rem}.hero-actions{flex-direction:column;align-items:center}.video-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1rem}.category-filters{justify-content:center}.section{padding:2rem 0}.main{margin-top:120px}}@media (max-width: 480px){.video-grid{grid-template-columns:1fr}.hero h2{font-size:1.5rem}.section h2{font-size:2rem}.nav-list{flex-wrap:wrap;justify-content:center}}.modal{display:none;position:fixed;z-index:2000;left:0;top:0;width:100%;height:100%;background-color:#000c;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);animation:fadeIn .3s ease}.modal.show{display:flex;align-items:center;justify-content:center}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:#fff;border-radius:var(--border-radius);box-shadow:var(--shadow-heavy);max-width:90vw;max-height:90vh;overflow-y:auto;animation:slideIn .3s ease;position:relative}@keyframes slideIn{0%{transform:translateY(-50px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;border-bottom:1px solid var(--border-color)}.modal-header h3{margin:0;color:var(--text-color)}.close-btn{background:none;border:none;font-size:2rem;color:var(--text-light);cursor:pointer;transition:var(--transition);width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:50%}.close-btn:hover{background:var(--error-color);color:#fff}.player-modal{max-width:95vw;width:1000px}.player-header{display:flex;justify-content:space-between;align-items:center;padding:1rem;background:var(--gradient-primary);color:#fff}.ad-banner{flex:1;text-align:center;font-weight:500}.player-container{position:relative;background:#000}#videoPlayer{width:100%;height:500px;background:#000}.player-info{padding:1.5rem}.player-info h3{color:var(--text-color);margin-bottom:1rem}.player-info p{color:var(--text-light);margin-bottom:1.5rem;line-height:1.6}.player-actions{display:flex;gap:1rem;flex-wrap:wrap}.auth-modal{width:400px;max-width:90vw}.auth-form{padding:2rem}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500;color:var(--text-color)}.form-group input{width:100%;padding:12px;border:2px solid var(--border-color);border-radius:var(--border-radius);font-size:1rem;transition:var(--transition)}.form-group input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #ff6b6b1a}.auth-switch{text-align:center;margin-top:1rem;color:var(--text-light)}.auth-switch a{color:var(--primary-color);font-weight:500}.profile-modal{width:600px;max-width:90vw}.profile-content{padding:2rem}.profile-info,.profile-stats,.profile-history{margin-bottom:2rem}.profile-info h4,.profile-stats h4,.profile-history h4{color:var(--text-color);margin-bottom:1rem;padding-bottom:.5rem;border-bottom:2px solid var(--primary-color)}.profile-info p{margin-bottom:.5rem;color:var(--text-color)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:1rem}.stat-item{text-align:center;padding:1rem;background:var(--gradient-primary);color:#fff;border-radius:var(--border-radius)}.stat-number{display:block;font-size:2rem;font-weight:700;margin-bottom:.5rem}.stat-label{font-size:.9rem;opacity:.9}.history-item{display:flex;align-items:center;gap:1rem;padding:1rem;background:var(--light-color);border-radius:var(--border-radius);margin-bottom:1rem}.history-thumbnail{width:80px;height:60px;border-radius:var(--border-radius);-o-object-fit:cover;object-fit:cover}.history-info h5{margin:0 0 .5rem;color:var(--text-color)}.history-info p{margin:0;font-size:.9rem;color:var(--text-light)}.info-modal{width:700px;max-width:90vw;max-height:80vh}.info-content{padding:2rem;line-height:1.8}.info-content h4{color:var(--primary-color);margin-top:2rem;margin-bottom:1rem}.info-content h4:first-child{margin-top:0}.info-content ul{margin-left:2rem;margin-bottom:1rem}.info-content li{margin-bottom:.5rem}.footer{background:var(--dark-color);color:#fff;padding:3rem 0 1rem;margin-top:4rem}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-bottom:2rem}.footer-section h4{color:var(--primary-color);margin-bottom:1rem}.footer-section ul{list-style:none}.footer-section li{margin-bottom:.5rem}.footer-section a{color:#fffc;transition:var(--transition)}.footer-section a:hover{color:var(--primary-color)}.footer-section p{color:#fffc;margin-bottom:.5rem}.footer-bottom{text-align:center;padding-top:2rem;border-top:1px solid rgba(255,255,255,.1)}.footer-bottom p{color:#fff9;margin-bottom:.5rem}.loading{display:inline-block;width:40px;height:40px;border:4px solid var(--border-color);border-radius:50%;border-top-color:var(--primary-color);animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}.notification{position:fixed;top:100px;right:20px;padding:1rem 1.5rem;border-radius:var(--border-radius);color:#fff;font-weight:500;z-index:3000;animation:slideInRight .3s ease}.notification.success{background:var(--success-color)}.notification.error{background:var(--error-color)}.notification.warning{background:var(--warning-color)}@keyframes slideInRight{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}@media (max-width: 768px){.modal-content{margin:20px;max-width:calc(100vw - 40px)}.player-modal{width:100%}#videoPlayer{height:250px}.auth-modal,.profile-modal,.info-modal{width:100%}.modal-header,.auth-form,.profile-content,.info-content{padding:1rem}.player-actions{flex-direction:column}.stats-grid{grid-template-columns:1fr 1fr}.history-item{flex-direction:column;text-align:center}.footer-content{grid-template-columns:1fr;text-align:center}}