:root{--primary-color: #4362ee;--primary-dark: #3a56d4;--secondary-color: #3f37c9;--accent-color: #4895ef;--light-color: #ffffff;--dark-color: #212529;--gray-color: #6c757d;--success-color: #4cc9f0;--error-color: #f72585;--border-radius: 12px;--box-shadow: 0 4px 20px rgba(0, 0, 0, .1);--transition: all .3s ease;--fade-duration: .3s;--fade-easing: ease-in-out;--slide-duration: .4s}*{margin:0;padding:0;box-sizing:border-box;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}body{background-color:#f0f0f0;color:var(--dark-color);line-height:1.6}.app-container{display:flex;flex-direction:column;min-height:100vh;max-width:1200px;margin:0 auto;padding-top:100px}.fixed-section{position:relative;top:0;z-index:100;background-color:#fff;padding:1.5rem 2rem;box-shadow:var(--box-shadow);border-bottom:1px solid rgba(0,0,0,.1);border-radius:var(--border-radius)}.app-header{text-align:center;margin-bottom:1.5rem}.app-header h1{font-size:2.5rem;color:var(--primary-color);margin-bottom:.5rem;font-weight:800;background:linear-gradient(45deg,var(--primary-color),var(--accent-color));-webkit-background-clip:text;background-clip:text;color:transparent}.app-header p{color:var(--gray-color);font-size:1.1rem}.input-group{display:flex;gap:.5rem;margin-top:1rem}.url-input{flex:1;padding:.8rem 1.2rem;border:2px solid #e9ecef;border-radius:var(--border-radius);font-size:1rem;transition:var(--transition);outline:none}.url-input:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #4361ee33}.btn{padding:.8rem 1.5rem;border:none;border-radius:var(--border-radius);font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition);display:inline-flex;align-items:center;justify-content:center;gap:.5rem}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-dark);transform:translateY(-2px)}.btn-primary:disabled{background-color:var(--gray-color);cursor:not-allowed;transform:none}.btn-secondary{background-color:#fff;color:var(--primary-color);border:2px solid var(--primary-color)}.btn-secondary:hover{background-color:var(--primary-color);color:#fff;transform:translateY(-2px)}.btn-secondary:disabled{border-color:var(--gray-color);color:var(--gray-color);background-color:#fff;cursor:not-allowed;transform:none}.scrollable-section{flex:1;padding:1.5rem 2rem;overflow-y:auto}.video-info{display:flex;flex-direction:column;gap:1.5rem;background-color:#fff;border-radius:var(--border-radius);padding:1.5rem;box-shadow:var(--box-shadow);margin-bottom:2rem}@media (min-width: 768px){.video-info{flex-direction:row}}.video-thumbnail{position:relative;width:100%;opacity:1;transition:opacity .5s ease;border-radius:var(--border-radius);aspect-ratio:16/9;object-fit:cover;box-shadow:0 4px 12px #0000001a;z-index:1}.info-content{flex:1;min-height:300px;display:flex;flex-direction:column}.video-thumbnail-container{position:relative;width:100%;max-width:400px;margin:0 auto}.video-title{font-size:1.5rem;margin-bottom:1rem;color:var(--dark-color)}.video-meta{margin-bottom:.5rem;color:var(--gray-color)}.video-meta strong{color:var(--dark-color)}.download-options{margin-top:1.5rem}.download-section{margin-bottom:1.5rem}.download-section h3{margin-bottom:1rem;color:var(--dark-color);font-size:1.2rem}.quality-buttons{display:flex;flex-wrap:wrap;gap:.8rem}.download-progress{background-color:#fff;padding:1.5rem;border-radius:var(--border-radius);box-shadow:var(--box-shadow);margin-top:1rem}.download-progress p{margin-bottom:.5rem;font-weight:500;color:var(--dark-color)}.progress-bar{height:10px;background-color:#e9ecef;border-radius:5px;overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--primary-color),var(--accent-color));border-radius:5px;transition:width .3s ease}.error-message{background-color:#ffebee;color:var(--error-color);padding:1rem;border-radius:var(--border-radius);margin-bottom:1.5rem;font-weight:500;border-left:4px solid var(--error-color)}.loading-spinner{display:inline-block;width:1rem;height:1rem;border:2px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 768px){.fixed-section{padding:1rem}.app-header h1{font-size:2rem}.app-header p{font-size:1rem}.input-group{flex-direction:column}.url-input{width:100%}.btn{width:100%;padding:.8rem}.scrollable-section,.video-info{padding:1rem}.quality-buttons{flex-direction:column}.quality-buttons .btn{width:100%}}.main-content{margin-top:20px}.scrollable-section{flex-grow:1;padding-bottom:300px;overflow-y:auto}@media (max-height: 800px){.scrollable-section{padding-bottom:350px}}.fixed-section{flex-shrink:0}.scrollable-section{flex-grow:1;overflow-y:auto;padding-bottom:180px}.cut-editor{margin:1.5rem 0;padding:1.2rem;background:var(--light-bg);border-radius:var(--border-radius);box-shadow:var(--box-shadow);transition:all .3s cubic-bezier(.25,.8,.25,1)}.time-display{display:flex;justify-content:space-between;margin-bottom:.8rem;font-size:.9rem;color:var(--gray-color);font-weight:500}.scrubber-container{width:100%;padding:1.5rem 0;cursor:pointer;touch-action:none;position:relative}.scrubber-track{position:relative;height:8px;background:var(--light-gray);border-radius:4px;transition:background .2s ease}.scrubber-progress{position:absolute;top:0;bottom:0;background:linear-gradient(90deg,var(--primary-color),var(--accent-color));border-radius:4px;transition:all .2s ease}.scrubber-handle{position:absolute;width:24px;height:24px;background:#fff;border-radius:50%;top:50%;transform:translate(-50%,-50%);cursor:grab;z-index:2;box-shadow:0 2px 8px #0003;transition:all .2s ease;display:flex;align-items:center;justify-content:center;touch-action:none}.scrubber-handle:after{content:"";position:absolute;width:12px;height:12px;border-radius:50%}.start-handle{border:3px solid var(--primary-color)}.start-handle:after{background:var(--primary-color)}.end-handle{border:3px solid var(--accent-color)}.end-handle:after{background:var(--accent-color)}.scrubber-handle:active{cursor:grabbing;transform:translate(-50%,-50%) scale(1.2);box-shadow:0 4px 12px #0000004d}.scrubber-handle:hover{transform:translate(-50%,-50%) scale(1.1)}.time-inputs{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:1.5rem}.time-input-group{position:relative}.time-input-group label{display:block;margin-bottom:.5rem;font-size:.9rem;color:var(--dark-color);font-weight:500}.time-input-group input{width:100%;padding:.8rem 1rem;border:2px solid var(--light-gray);border-radius:var(--border-radius);background:#fff;font-size:1rem;font-family:monospace;transition:var(--transition)}.time-input-group input:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #4361ee1a;outline:none}.handle-tooltip{position:absolute;bottom:100%;left:50%;transform:translate(-50%);background:var(--dark-color);color:#fff;padding:.3rem .6rem;border-radius:4px;font-size:.8rem;white-space:nowrap;margin-bottom:8px;opacity:0;transition:opacity .2s ease}.scrubber-handle:hover .handle-tooltip{opacity:1}.scrubber-preview{position:absolute;top:-40px;left:50%;transform:translate(-50%);background:var(--dark-color);color:#fff;padding:.3rem .8rem;border-radius:20px;font-size:.9rem;font-weight:700;pointer-events:none;opacity:0;transition:opacity .2s ease}.scrubber-container.dragging .scrubber-preview{opacity:1}@media (max-width: 768px){.scrubber-container{padding:1.2rem 0}.scrubber-track{height:6px}.scrubber-handle{width:20px;height:20px}.scrubber-handle:after{width:10px;height:10px}.time-inputs{grid-template-columns:1fr;gap:.8rem}.time-input-group input{padding:.7rem .9rem}}@keyframes pulse{0%{transform:translate(-50%,-50%) scale(1)}50%{transform:translate(-50%,-50%) scale(1.05)}to{transform:translate(-50%,-50%) scale(1)}}.scrubber-handle.active-handle{animation:pulse 1.5s infinite}.cut-editor-container{overflow:hidden;transition:height .3s ease}.cut-editor{opacity:0;max-height:0;transform:translateY(-10px);transition:all .3s cubic-bezier(.68,-.55,.265,1.55);overflow:hidden}.cut-editor.active{opacity:1;max-height:500px;transform:translateY(0)}.scrubber-handle:before{content:"";position:absolute;width:100%;height:100%;background:inherit;border-radius:inherit;z-index:-1;opacity:.4;transform:scale(1);transition:transform .3s,opacity .3s}.scrubber-handle:active:before{transform:scale(1.8);opacity:0}@media (max-width: 768px){.scrubber-track{height:30px}.scrubber-handle{width:32px;height:32px;border-width:4px}.time-display{font-size:14px}.time-inputs{flex-direction:column}.time-input-group{width:100%;margin-bottom:10px}}.fade-in{animation:fadeIn var(--fade-duration) var(--fade-easing) forwards}.fade-section{opacity:0;animation:fadeIn var(--fade-duration) var(--fade-easing) forwards;animation-delay:.1s}.fade-in-up{opacity:0;transform:translateY(20px);animation:fadeInUp var(--fade-duration) var(--fade-easing) forwards}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.btn,.url-input,.scrubber-handle,.time-input-group input{transition:all var(--fade-duration) var(--fade-easing)}.video-thumbnail.loaded{opacity:1}.info-content{opacity:0;transform:translateY(10px);transition:all var(--fade-duration) var(--fade-easing)}.video-info.active .info-content{opacity:1;transform:translateY(0)}:root{--primary-color: #4362ee;--primary-hover: #2a4bd7;--secondary-color: #3498db;--secondary-hover: #2980b9;--text-color: #2c3e50;--text-light: #7f8c8d;--bg-color: #ffffff;--shadow: 0 4px 6px rgba(0, 0, 0, .1);--transition: all .3s ease}.sidebar{position:fixed;top:0;left:0;right:0;background-color:var(--bg-color);box-shadow:var(--shadow);z-index:1000;transition:var(--transition)}.sidebar.scrolled{box-shadow:0 2px 10px #00000026}.sidebar-container{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;max-width:1200px;margin:0 auto}.sidebar-brand{display:flex;align-items:center}.sidebar-logo{font-size:1.5rem;font-weight:800;color:var(--primary-color);text-decoration:none;transition:var(--transition)}.sidebar-logo:hover{color:var(--primary-hover)}.sidebar-nav{display:flex;align-items:center;gap:2rem}.nav-links{display:flex;gap:1.5rem}.nav-link{color:var(--text-color);text-decoration:none;font-weight:500;transition:var(--transition);position:relative;padding:.5rem 0}.nav-link:hover{color:var(--primary-color)}.nav-link:after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background-color:var(--primary-color);transition:var(--transition)}.nav-link:hover:after{width:100%}.nav-actions{display:flex;gap:1rem;margin-left:1rem}.login-btn,.register-btn{padding:.5rem 1.25rem;border-radius:6px;font-weight:500;cursor:pointer;transition:var(--transition)}.login-btn{background-color:transparent;color:var(--primary-color);border:1px solid var(--primary-color)}.login-btn:hover{background-color:#4362ee1a}.register-btn{background-color:var(--primary-color);color:#fff;border:1px solid var(--primary-color)}.register-btn:hover{background-color:var(--primary-hover);border-color:var(--primary-hover)}.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:.5rem;z-index:1001;flex-direction:column;justify-content:space-between;width:30px;height:24px}.hamburger-line{display:block;width:100%;height:3px;background-color:var(--primary-color);border-radius:3px;transition:var(--transition)}.menu-toggle.active .hamburger-line:nth-child(1){transform:translateY(7px) rotate(45deg)}.menu-toggle.active .hamburger-line:nth-child(2){opacity:0}.menu-toggle.active .hamburger-line:nth-child(3){transform:translateY(-7px) rotate(-45deg)}@media (max-width: 992px){.sidebar-container{padding:1rem}.sidebar-nav{gap:1rem}}@media (max-width: 768px){.sidebar-container{flex-wrap:wrap}.menu-toggle{display:flex}.sidebar-nav{position:fixed;top:70px;left:0;right:0;background-color:var(--bg-color);box-shadow:var(--shadow);flex-direction:column;align-items:flex-start;padding:1rem 2rem;gap:0;transform:translateY(-150%);opacity:0;transition:transform .3s ease,opacity .2s ease;z-index:999}.sidebar-nav.active{transform:translateY(0);opacity:1}.nav-links{flex-direction:column;width:100%;gap:0}.nav-link{padding:1rem 0;border-bottom:1px solid rgba(0,0,0,.05);width:100%}.nav-link:after{display:none}.nav-actions{margin:1rem 0 0;width:100%;flex-direction:column;gap:.5rem}.login-btn,.register-btn{width:100%;text-align:center;padding:.75rem}}.site-footer{backdrop-filter:none!important;-webkit-backdrop-filter:none!important;background-color:#fff0;color:#000;padding:1rem 0 0;bottom:0;left:0;right:0;width:100%;z-index:10}.footer-container{max-width:1300px;margin:0 auto;width:100%;padding:0 20px;box-sizing:border-box}.footer-content{display:flex;justify-content:space-between;flex-wrap:wrap;gap:20px;margin-bottom:1.5rem}.footer-section{flex:1;min-width:250px;padding:0 15px}.footer-section h3{color:#3498db;margin-bottom:1rem;font-size:1.2rem;font-weight:600}.footer-section p{font-size:.9rem;line-height:1.6;margin:0 0 .5rem}.footer-more-info{font-size:.85rem!important;color:#555!important}.footer-section ul{list-style:none;padding:0;margin:0}.footer-section ul li{margin-bottom:.5rem;position:relative;padding-left:1rem;font-size:.85rem;line-height:1.4}.footer-section ul li:before{content:"•";color:#3498db;position:absolute;left:0;font-size:1.2rem}.platform-icons{display:flex;flex-wrap:wrap;gap:8px;margin-top:.5rem}.icon{padding:.4rem .8rem;border-radius:4px;font-size:.8rem;font-weight:700;display:inline-block;color:#fff!important}.youtube{background-color:red}.instagram{background:linear-gradient(45deg,#405de6,#5851db,#833ab4,#c13584,#e1306c,#fd1d1d)}.twitter{background-color:#1da1f2}.soundcloud{background-color:#f80}.tiktok{background-color:#000}.facebook{background-color:#1877f2}.footer-bottom{text-align:center;padding:1rem 0;border-top:1px solid rgba(0,0,0,.1);font-size:.8rem;width:100%}.footer-legal{margin-top:.5rem}.footer-legal a{color:#3498db;text-decoration:none;margin:0 .3rem}.footer-legal a:hover{text-decoration:underline}.footer-section a{color:#000;text-decoration:none}.footer-section a:hover{color:#3498db}@media (max-width: 768px){.footer-content{flex-direction:column;gap:1.5rem}.footer-section{padding:0;text-align:center}.footer-section ul li{padding-left:0;text-align:center}.footer-section ul li:before{display:none}.platform-icons{justify-content:center}}.overlay-blur-container{position:fixed;top:0;left:0;width:100vw;height:100vh;z-index:9999;display:flex;justify-content:center;align-items:center;opacity:0;pointer-events:none;transition:opacity .4s ease-out;transform:translateZ(0);will-change:opacity,backdrop-filter}.overlay-blur-container.visible{opacity:1;pointer-events:auto}.overlay-blur-backdrop{position:absolute;width:100%;height:100%;background:#0000;backdrop-filter:blur(0px);-webkit-backdrop-filter:blur(0px);transition:all .4s ease-out}.overlay-blur-container.visible .overlay-blur-backdrop{background:#00000080;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.overlay-blur-content{position:relative;z-index:1000;background:#fffc;backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);border-radius:16px;padding:2rem;width:90%;max-width:400px;box-shadow:0 8px 32px #0000001a;transform:scale(.95);opacity:0;transition:all .4s cubic-bezier(.175,.885,.32,1.275)}.overlay-blur-container.visible .overlay-blur-content{transform:scale(1);opacity:1}.overlay-blur-content{position:relative;z-index:1000;background:#fff;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-radius:16px;padding:2.5rem;width:90%;max-width:400px;box-shadow:0 8px 32px #0003;border:1px solid rgba(255,255,255,.3);transform:scale(.95);transition:all .4s cubic-bezier(.175,.885,.32,1.275)}.overlay-blur-container.visible .overlay-blur-content{transform:scale(1)}.spinner-container{position:relative;width:80px;height:80px;margin:0 auto 1.5rem}.spinner{width:100%;height:100%;animation:rotate 1.5s linear infinite}.spinner-inner{width:100%;height:100%;border-radius:50%;border:3px solid transparent;border-top-color:#3498db;border-right-color:#3498db}.spinner-track{position:absolute;inset:5px;border-radius:50%;border:3px solid rgba(52,152,219,.2)}@keyframes rotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-dots{display:flex;justify-content:center;gap:8px;margin-top:1.5rem}.dot{width:10px;height:10px;border-radius:50%;background:#3498db;animation:bounce 1.4s infinite ease-in-out}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.download-wrapper{text-align:center}.download-header{display:flex;align-items:center;gap:10px;justify-content:center;margin-bottom:1.5rem}.download-icon{width:24px;height:24px;fill:#3498db}.progress-container{height:12px;background:#0000001a;border-radius:6px;overflow:hidden;margin:1.5rem 0}.progress-bar{height:100%;background:linear-gradient(90deg,#3498db,#2ecc71);border-radius:6px;position:relative;transition:width .3s ease}.progress-text{position:absolute;right:8px;top:50%;transform:translateY(-50%);color:#fff;font-size:.7rem;font-weight:700}.progress-stats{display:flex;justify-content:space-between;font-size:.8rem;color:#666;margin-top:.5rem}.loading-text{font-size:1.1rem;color:#333;margin-bottom:1.5rem;font-weight:500}h3{color:#2c3e50;margin:0;font-size:1.2rem}.overlay-blur-container{transform:translateZ(0);will-change:opacity,backdrop-filter}.loading-wrapper{display:flex;flex-direction:column;align-items:center;text-align:center;width:100%}.loading-text{font-size:1.1rem;color:var(--dark-color);margin:1.5rem 0;font-weight:500;letter-spacing:.5px;position:relative;display:inline-block}.ellipsis:after{content:"...";position:absolute;animation:ellipsis 1.5s infinite}@keyframes ellipsis{0%{content:"."}33%{content:".."}66%{content:"..."}}.loading-dots{display:flex;justify-content:center;gap:8px;width:100%}.dot{animation:bounce 1.4s infinite ease-in-out both}.dot:nth-child(1){animation-delay:-.32s}.dot:nth-child(2){animation-delay:-.16s}