:root{--primary-color: #4f46e5;--primary-hover: #4338ca;--primary-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);--youtube-color: #ff0000;--youtube-hover: #cc0000;--youtube-gradient: linear-gradient(135deg, #ff0000 0%, #cc0000 100%);--instagram-color: #c13584;--instagram-gradient: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);--success-color: #0ea5e9;--success-hover: #0284c7;--success-gradient: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);--error-color: #e11d48;--error-gradient: linear-gradient(135deg, #e11d48 0%, #f43f5e 100%);--background-color: #f8fafc;--card-background: #ffffff;--card-border: 1px solid rgba(0, 0, 0, .05);--text-color: #1e293b;--text-light: #64748b;--text-xlight: #94a3b8;--border-color: #e2e8f0;--border-radius: 12px;--border-radius-sm: 8px;--border-radius-lg: 16px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -2px rgba(0, 0, 0, .1);--shadow-md: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -4px rgba(0, 0, 0, .1);--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 8px 10px -6px rgba(0, 0, 0, .1);--shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, .05);--shadow-glow: 0 0 15px rgba(79, 70, 229, .4);--transition: all .3s ease;--transition-bounce: all .5s cubic-bezier(.68, -.55, .27, 1.55);--spacing-xs: .5rem;--spacing-sm: .75rem;--spacing: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,SF Pro Display,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background-color:var(--background-color);color:var(--text-color);line-height:1.6;background-image:radial-gradient(circle at 100% 0%,rgba(79,70,229,.08) 0%,transparent 25%),radial-gradient(circle at 0% 80%,rgba(14,165,233,.08) 0%,transparent 30%);background-attachment:fixed;background-size:100% 100%}#root{width:100%;height:100%}.app-container{display:flex;flex-direction:column;min-height:100vh;width:100%;position:relative}.main-content{flex:1;display:flex;flex-direction:column}.navbar{display:flex;justify-content:space-between;align-items:center;padding:1rem 6%;background-color:#fffffff2;box-shadow:var(--shadow);position:sticky;top:0;z-index:100;border-bottom:1px solid var(--border-color)}.logo-container{display:flex;align-items:center;gap:var(--spacing)}.app-logo{width:40px;height:40px;filter:drop-shadow(0 2px 4px rgba(0,0,0,.1));transition:var(--transition)}.app-logo:hover{transform:rotate(10deg) scale(1.05)}.app-title{font-size:1.5rem;font-weight:800;background:var(--primary-gradient);-webkit-background-clip:text;background-clip:text;color:transparent;margin:0;letter-spacing:-.5px;text-shadow:0 1px 1px rgba(0,0,0,.1)}.nav-links{display:flex;gap:var(--spacing)}.nav-link{display:flex;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-xs) var(--spacing);border:2px solid transparent;border-radius:var(--border-radius);background:transparent;color:var(--text-color);font-weight:600;cursor:pointer;transition:var(--transition);position:relative}.nav-link:after{content:"";position:absolute;bottom:-2px;left:50%;transform:translate(-50%);width:0;height:3px;background:var(--primary-gradient);transition:var(--transition);border-radius:3px}.nav-link:hover{color:var(--primary-color)}.nav-link:hover:after{width:80%}.nav-link.active{color:var(--primary-color)}.nav-link.active:after{width:80%}.nav-icon{width:20px;height:20px}.main-content{flex:1;padding:2rem 6%;display:flex;justify-content:center;align-items:flex-start}.content-card{background-color:var(--card-background);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-lg);border:var(--card-border);overflow:hidden;width:100%;max-width:1000px;margin:0 auto;padding:var(--spacing-xl)}.card-header{text-align:center;margin-bottom:var(--spacing-lg);position:relative;padding-bottom:var(--spacing);border-bottom:1px solid var(--border-color)}.card-header:after{content:"";position:absolute;bottom:-1px;left:50%;transform:translate(-50%);width:100px;height:3px;background:var(--primary-gradient);border-radius:2px}.card-title{font-size:2rem;font-weight:800;background:var(--primary-gradient);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:var(--spacing-xs);letter-spacing:-.5px;text-shadow:0 1px 1px rgba(0,0,0,.1)}.subtitle{color:var(--text-light);font-size:1.1rem;font-weight:400}.url-form{margin-bottom:var(--spacing-lg)}.input-group{display:flex;gap:var(--spacing)}.input-group input{flex:1;padding:14px 20px;border-radius:var(--border-radius);border:2px solid var(--border-color);font-size:1rem;transition:var(--transition);box-shadow:var(--shadow-inner)}.input-group input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #4f46e533}.primary-button{background:var(--primary-gradient);color:#fff;border:none;border-radius:var(--border-radius);padding:14px 24px;font-weight:600;font-size:1rem;cursor:pointer;transition:var(--transition);box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;gap:var(--spacing-xs);min-width:180px}.primary-button:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.primary-button:active{transform:translateY(0)}.primary-button:disabled{opacity:.7;cursor:not-allowed}.spinner{width:20px;height:20px;border:3px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin 1s ease-in-out infinite;display:inline-block;margin-right:8px}.spinner-large{display:inline-block;width:50px;height:50px;border:3px solid rgba(79,70,229,.3);border-radius:50%;border-top-color:var(--primary-color);animation:spin 1s linear infinite;margin-bottom:16px}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 0;color:var(--text);text-align:center}@keyframes spin{to{transform:rotate(360deg)}}.error-message{background-color:#e11d481a;color:var(--error-color);padding:var(--spacing);border-radius:var(--border-radius);margin-bottom:var(--spacing-lg);border-left:4px solid var(--error-color);font-weight:500}.video-info{display:flex;flex-direction:column;gap:var(--spacing-lg)}.video-details{display:flex;gap:var(--spacing-lg);align-items:center}.thumbnail{width:280px;height:auto;border-radius:var(--border-radius);box-shadow:var(--shadow);transform:rotate(-1deg);transition:var(--transition)}.thumbnail:hover{transform:rotate(0);box-shadow:var(--shadow-md)}.video-metadata{flex:1}.video-title{font-size:1.5rem;font-weight:700;margin-bottom:var(--spacing-xs);line-height:1.3}.video-author,.video-duration{color:var(--text-light);margin-bottom:var(--spacing-xs)}.format-selection{margin-top:var(--spacing)}.section-title{font-size:1.2rem;font-weight:600;margin-bottom:var(--spacing);color:var(--text-color);position:relative;display:inline-block}.section-title:after{content:"";position:absolute;bottom:-4px;left:0;width:40px;height:3px;background:var(--primary-gradient);border-radius:2px}.formats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:var(--spacing);margin-top:var(--spacing)}.format-card{background-color:#fff;border:2px solid var(--border-color);border-radius:var(--border-radius);padding:var(--spacing);cursor:pointer;transition:var(--transition);box-shadow:var(--shadow-sm)}.format-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#4f46e54d}.format-card.selected{border-color:var(--primary-color);background-color:#4f46e50d;box-shadow:var(--shadow),0 0 0 2px #4f46e533}.format-quality{font-weight:600;margin-bottom:var(--spacing-xs);color:var(--text-color)}.format-type,.format-size{font-size:.9rem;color:var(--text-light)}.download-section{margin-top:var(--spacing-lg);text-align:center}.download-controls{margin-top:var(--spacing)}.download-btn{background:var(--success-gradient);color:#fff;border:none;border-radius:var(--border-radius);padding:16px 32px;font-weight:600;font-size:1.1rem;cursor:pointer;transition:var(--transition-bounce);box-shadow:var(--shadow);min-width:220px}.download-btn:hover{transform:translateY(-3px) scale(1.02);box-shadow:var(--shadow-md),0 0 15px #0ea5e980}.download-btn:active{transform:translateY(0) scale(1)}.download-btn:disabled{opacity:.7;cursor:not-allowed}.progress-container{width:100%;max-width:500px;margin:0 auto;text-align:center;padding:var(--spacing);background:white;border-radius:var(--border-radius);box-shadow:var(--shadow-sm);border:1px solid var(--border-color);position:relative}.progress-bar{height:20px;background-color:#e2e8f080;border-radius:10px;overflow:hidden;margin-bottom:var(--spacing-xs);box-shadow:var(--shadow-inner);position:relative;z-index:1}.progress-fill{height:100%;background:var(--success-gradient);border-radius:10px;transition:width .2s ease-out;box-shadow:0 0 10px #0ea5e980;position:relative;overflow:hidden;min-width:10px}.progress-fill:before{content:attr(data-progress) "%";position:absolute;right:10px;top:50%;transform:translateY(-50%);color:#fff;font-size:.75rem;font-weight:700;text-shadow:0 0 3px rgba(0,0,0,.5);opacity:.9;z-index:2}.progress-fill:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(45deg,rgba(255,255,255,.2) 25%,transparent 25%,transparent 50%,rgba(255,255,255,.2) 50%,rgba(255,255,255,.2) 75%,transparent 75%);background-size:20px 20px;animation:progressStripes 1s linear infinite;z-index:1}@keyframes progressStripes{0%{background-position:0 0}to{background-position:20px 0}}.progress-text{font-size:1rem;color:var(--text-color);font-weight:600;margin-top:var(--spacing-xs);display:flex;justify-content:center;align-items:center;gap:var(--spacing-xs)}.progress-percentage{position:relative;display:inline-block;padding:0 5px}.progress-percentage:after{content:"";position:absolute;bottom:-2px;left:0;width:100%;height:2px;background:var(--success-gradient);border-radius:1px}.progress-debug{font-size:.8rem;color:var(--text-light);opacity:.7;font-weight:400}.progress-animation{position:absolute;bottom:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,transparent,rgba(14,165,233,.5),transparent);animation:progressPulse 2s ease-in-out infinite;z-index:0}@keyframes progressPulse{0%{transform:translate(-100%)}to{transform:translate(100%)}}.download-complete{text-align:center;padding:var(--spacing)}.success-message{font-size:1.2rem;font-weight:600;color:var(--success-color);margin-bottom:var(--spacing)}.download-link{display:inline-block;background:var(--success-gradient);color:#fff;text-decoration:none;padding:var(--spacing) var(--spacing-lg);border-radius:var(--border-radius);font-weight:600;transition:var(--transition);box-shadow:var(--shadow)}.download-link:hover{transform:translateY(-2px);box-shadow:var(--shadow-md),0 0 15px #0ea5e980}.download-link:active{transform:translateY(0)}.privacy-policy-container{max-width:1200px;margin:0 auto;padding:var(--spacing-lg);background-color:var(--card-background);border-radius:var(--border-radius-lg);box-shadow:var(--shadow)}.privacy-policy-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-lg);padding-bottom:var(--spacing);border-bottom:1px solid var(--border-color)}.privacy-logo-container{display:flex;align-items:center;gap:var(--spacing)}.privacy-logo{width:40px;height:40px}.privacy-title{font-size:1.8rem;font-weight:700;background:var(--primary-gradient);-webkit-background-clip:text;background-clip:text;color:transparent}.back-button{padding:var(--spacing-xs) var(--spacing);background:var(--primary-gradient);color:#fff;border:none;border-radius:var(--border-radius);font-weight:600;cursor:pointer;transition:var(--transition);box-shadow:var(--shadow-sm)}.back-button:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.privacy-content{line-height:1.6}.policy-section{margin-bottom:var(--spacing-lg)}.policy-section h2{font-size:1.6rem;margin-bottom:var(--spacing);color:var(--text-dark)}.policy-section h3{font-size:1.3rem;margin-bottom:var(--spacing-sm);color:var(--text-dark)}.policy-section p,.policy-section ul{margin-bottom:var(--spacing);color:var(--text)}.policy-section ul{padding-left:var(--spacing-lg)}.policy-section li{margin-bottom:var(--spacing-xs)}.policy-intro{font-size:1.1rem;margin-bottom:var(--spacing-md)}.contact-info{background-color:var(--background-color);padding:var(--spacing);border-radius:var(--border-radius);border-left:4px solid var(--primary-color)}.policy-footer{margin-top:var(--spacing-lg);padding-top:var(--spacing);border-top:1px solid var(--border-color);font-style:italic;color:var(--text-light)}.footer{padding:var(--spacing-md) 6% var(--spacing);color:var(--text-light);position:relative;background:rgba(255,255,255,.95);border-top:1px solid rgba(226,232,240,.8);box-shadow:0 -2px 10px #0000000d;margin-top:auto;width:100%}.footer:before{content:"";position:absolute;top:-3px;left:0;width:100%;height:3px;background:linear-gradient(to right,var(--instagram-gradient),var(--primary-gradient))}.footer-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--spacing-md);margin-bottom:var(--spacing)}.footer-logo{display:flex;align-items:center;gap:var(--spacing-xs)}.footer-logo-img{width:30px;height:30px}.footer-logo-text{font-weight:700;font-size:1.1rem;background:var(--primary-gradient);-webkit-background-clip:text;background-clip:text;color:transparent}.footer-links{display:flex;gap:var(--spacing-md);flex-wrap:wrap}.footer-link{color:var(--text-light);text-decoration:none;font-weight:500;transition:var(--transition);position:relative}.footer-link:after{content:"";position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--primary-gradient);transition:var(--transition)}.footer-link:hover{color:var(--primary-color)}.footer-link:hover:after{width:100%}.footer-social{display:flex;gap:var(--spacing-sm)}.social-link{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background-color:#fff;box-shadow:var(--shadow-sm);transition:var(--transition)}.social-link:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.social-icon{width:20px;height:20px}.footer-copyright{text-align:center;font-size:.9rem;color:var(--text-light);padding-top:var(--spacing);border-top:1px solid var(--border-color)}@media (max-width: 768px){.navbar{flex-direction:column;gap:var(--spacing);padding:var(--spacing) 3%}.logo-container{justify-content:center}.app-title{font-size:1.3rem}.nav-links{width:100%;justify-content:center}.nav-link{flex:1;justify-content:center;font-size:.9rem;padding:var(--spacing-xs)}.main-content{padding:var(--spacing) 3%}.content-card{padding:var(--spacing)}.card-title{font-size:1.6rem}.subtitle{font-size:.9rem}.video-details{flex-direction:column}.thumbnail{width:100%;max-width:320px;margin:0 auto;transform:rotate(0)}.input-group{flex-direction:column}.formats-grid{grid-template-columns:1fr}.download-btn{width:100%;min-width:unset;padding:14px 20px}.progress-container{width:100%}.section-title{font-size:1.1rem}.footer{padding:var(--spacing) 3%}.footer-content{flex-direction:column;gap:var(--spacing);text-align:center}.footer-logo{justify-content:center}.footer-links{justify-content:center;gap:var(--spacing)}.footer-social{justify-content:center}}@media (max-width: 480px){.navbar{flex-direction:column;gap:var(--spacing);padding:var(--spacing) 3%}.nav-links{width:100%;justify-content:space-between}.nav-link{padding:var(--spacing-xs) var(--spacing-sm);font-size:.9rem}.input-group{flex-direction:column;gap:var(--spacing-sm)}.input-group input,.input-group button{width:100%}.video-details{flex-direction:column;align-items:center;text-align:center}.thumbnail{margin-bottom:var(--spacing);margin-right:0}.format-card{padding:var(--spacing-xs)}.footer-links{flex-direction:column;gap:var(--spacing-xs)}}.auth-error{background-color:var(--error-bg);color:var(--error-text);padding:var(--spacing-lg);border-radius:var(--border-radius);margin-bottom:var(--spacing-lg);text-align:center;border-left:4px solid var(--error-border)}.auth-error p{margin-bottom:var(--spacing)}.youtube-link{display:inline-block;margin-top:var(--spacing);padding:var(--spacing-sm) var(--spacing);background-color:red;color:#fff;text-decoration:none;border-radius:var(--border-radius);font-weight:600;transition:var(--transition)}.youtube-link:hover{background-color:#c00;transform:translateY(-2px)}