:root{--font-sans: "Century Gothic", CenturyGothic, AppleGothic, sans-serif;--bg-primary: #090d16;--bg-secondary: #131926;--bg-tertiary: #1e2638;--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--primary: #3b82f6;--primary-glow: rgba(59, 130, 246, .15);--success: #10b981;--error: #ef4444;--border-color: rgba(255, 255, 255, .08);--border-color-hover: rgba(255, 255, 255, .16);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--transition: all .25s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.5;overflow-x:hidden;background-image:radial-gradient(circle at 10% 20%,rgba(59,130,246,.05) 0%,transparent 40%),radial-gradient(circle at 90% 80%,rgba(139,92,246,.05) 0%,transparent 40%)}#root{min-height:100vh;display:flex;flex-direction:column}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--bg-tertiary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.container{max-width:1000px;width:100%;margin:0 auto;padding:0 20px}header{border-bottom:1px solid var(--border-color);background-color:#090d16cc;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);position:sticky;top:0;z-index:100;padding:16px 0}.header-content{display:flex;justify-content:space-between;align-items:center}.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.25rem;color:var(--text-primary);text-decoration:none}.logo-icon{color:var(--primary);animation:pulse 2s infinite}.logo span{background:linear-gradient(135deg,#3b82f6,#8b5cf6);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.nav-links{display:flex;gap:20px}.nav-link{color:var(--text-secondary);text-decoration:none;font-size:.875rem;transition:var(--transition)}.nav-link:hover{color:var(--text-primary)}.hero{text-align:center;padding:60px 0 40px}.hero h1{font-size:2.75rem;font-weight:800;line-height:1.2;margin-bottom:16px;background:linear-gradient(135deg,var(--text-primary) 30%,var(--text-secondary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero p{color:var(--text-secondary);font-size:1.125rem;max-width:600px;margin:0 auto 30px}.converter-card{background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:30px;box-shadow:0 10px 30px -10px #00000080,0 1px 3px #ffffff05;margin-bottom:50px;position:relative;overflow:hidden;transition:var(--transition)}.converter-card:hover{border-color:var(--border-color-hover);box-shadow:0 12px 40px -10px #000000b3,0 0 20px var(--primary-glow)}.input-group{display:flex;gap:12px;margin-bottom:24px}.url-input-wrapper{position:relative;flex:1}.url-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-muted)}.url-input{width:100%;padding:16px 16px 16px 48px;background-color:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:1rem;outline:none;transition:var(--transition)}.url-input:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-glow)}.clear-btn{position:absolute;right:16px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--text-muted);cursor:pointer;transition:var(--transition)}.clear-btn:hover{color:var(--text-primary)}.primary-btn{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border:none;border-radius:var(--radius-md);padding:0 28px;font-weight:600;font-size:1rem;cursor:pointer;display:flex;align-items:center;gap:8px;transition:var(--transition)}.primary-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #3b82f64d}.primary-btn:active{transform:translateY(1px)}.primary-btn:disabled{opacity:.6;cursor:not-allowed;transform:none!important;box-shadow:none!important}.format-selector{display:flex;justify-content:center;gap:16px;margin-bottom:12px}.format-btn{background-color:var(--bg-primary);border:1px solid var(--border-color);color:var(--text-secondary);padding:10px 24px;border-radius:var(--radius-sm);font-weight:600;font-size:.9rem;cursor:pointer;display:flex;align-items:center;gap:8px;transition:var(--transition)}.format-btn:hover{border-color:var(--border-color-hover);color:var(--text-primary)}.format-btn.active{background-color:#3b82f61a;border-color:var(--primary);color:var(--primary)}.video-info-card{display:flex;gap:24px;margin-top:30px;padding-top:30px;border-top:1px solid var(--border-color);animation:fadeIn .4s ease-out}.thumbnail-container{width:220px;aspect-ratio:16/9;border-radius:var(--radius-md);overflow:hidden;background-color:var(--bg-primary);border:1px solid var(--border-color);position:relative;flex-shrink:0}.thumbnail-container img{width:100%;height:100%;object-fit:cover}.duration-badge{position:absolute;bottom:8px;right:8px;background-color:#000000bf;color:#fff;padding:2px 6px;border-radius:4px;font-size:.75rem;font-weight:600}.video-details{flex:1;display:flex;flex-direction:column;justify-content:space-between}.video-meta{display:flex;flex-direction:column;gap:6px}.video-title{font-size:1.125rem;font-weight:700;line-height:1.4;color:var(--text-primary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.video-uploader{font-size:.875rem;color:var(--text-secondary)}.actions-container{display:flex;align-items:center;gap:16px;margin-top:16px}.download-action-btn{background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;border-radius:var(--radius-md);padding:12px 28px;font-weight:600;font-size:1rem;cursor:pointer;display:flex;align-items:center;gap:8px;transition:var(--transition)}.download-action-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #10b9814d}.download-action-btn:active{transform:translateY(1px)}.spinner{animation:rotate 1s linear infinite}.alert{padding:16px;border-radius:var(--radius-md);font-size:.9rem;display:flex;align-items:flex-start;gap:12px;margin-top:20px;animation:fadeIn .3s ease-out}.alert-error{background-color:#ef44441a;border:1px solid rgba(239,68,68,.2);color:#fca5a5}.alert-success{background-color:#10b9811a;border:1px solid rgba(16,185,129,.2);color:#a7f3d0}.alert-icon{flex-shrink:0;margin-top:2px}.processing-card{text-align:center;padding:30px 20px;display:flex;flex-direction:column;align-items:center;gap:16px}.processing-pulse{width:60px;height:60px;border-radius:50%;background-color:var(--primary-glow);display:flex;align-items:center;justify-content:center;color:var(--primary);animation:radialPulse 1.5s infinite;margin-bottom:8px}.processing-card h3{font-size:1.25rem;font-weight:700}.processing-card p{color:var(--text-secondary);font-size:.9rem;max-width:360px;line-height:1.6}.platforms-section{text-align:center;margin:60px 0}.platforms-section h2{font-size:1rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-bottom:30px}.platform-grid{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;max-width:900px;margin:0 auto}.platform-card{display:flex;align-items:center;gap:8px;background-color:var(--bg-secondary);border:1px solid var(--border-color);padding:8px 14px;border-radius:var(--radius-sm);font-weight:600;font-size:.75rem;color:var(--text-secondary);cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.platform-card:hover{color:var(--text-primary);transform:translateY(-2px);border-color:var(--brand-hover-color);box-shadow:0 8px 24px -6px var(--brand-glow-color),0 0 12px var(--brand-glow-color-subtle)}.platform-icon-container{width:16px;height:16px;display:flex;align-items:center;justify-content:center;transition:var(--transition)}.platform-icon-container svg{width:100%;height:100%}.platform-card:hover .platform-icon-container{transform:scale(1.1)}.features-section{padding:40px 0 60px;border-top:1px solid var(--border-color)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:30px}.feature-card{background-color:var(--bg-secondary);border:1px solid var(--border-color);padding:24px;border-radius:var(--radius-md);transition:var(--transition)}.feature-card:hover{border-color:var(--border-color-hover);transform:translateY(-2px)}.feature-icon-wrapper{width:48px;height:48px;border-radius:var(--radius-sm);background-color:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;color:var(--primary);margin-bottom:16px}.feature-card h3{font-size:1.125rem;font-weight:700;margin-bottom:10px;color:var(--text-primary)}.feature-card p{color:var(--text-secondary);font-size:.875rem;line-height:1.6}footer{margin-top:auto;border-top:1px solid var(--border-color);padding:30px 0;background-color:#090d16e6}.footer-content{display:flex;justify-content:space-between;align-items:center;color:var(--text-muted);font-size:.875rem}.footer-links{display:flex;gap:20px}@keyframes rotate{to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.8;transform:scale(1.03)}}@keyframes radialPulse{0%{box-shadow:0 0 #3b82f666}70%{box-shadow:0 0 0 15px #3b82f600}to{box-shadow:0 0 #3b82f600}}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 768px){.hero h1{font-size:2.25rem}.input-group{flex-direction:column}.primary-btn{padding:16px;justify-content:center}.video-info-card{flex-direction:column;align-items:center}.thumbnail-container{width:100%;max-width:340px}.video-details{width:100%;gap:16px}.actions-container{justify-content:center}.footer-content{flex-direction:column;gap:16px;text-align:center}}.nav-link-btn{background:none;border:none;color:var(--text-secondary);font-family:inherit;font-size:.875rem;font-weight:500;cursor:pointer;padding:6px 12px;border-radius:var(--radius-sm);transition:var(--transition)}.nav-link-btn:hover{color:var(--text-primary);background-color:#ffffff0a}.nav-link-btn.active{color:var(--primary);background-color:#3b82f61a;font-weight:600}.page-container{padding:40px 0 60px;max-width:800px;margin:0 auto}.page-fade-in{animation:fadeIn .4s cubic-bezier(.4,0,.2,1)}.page-header{text-align:center;margin-bottom:40px}.page-badge{display:inline-block;font-size:.75rem;font-weight:700;text-transform:uppercase;color:var(--primary);background-color:#3b82f61a;padding:4px 10px;border-radius:20px;letter-spacing:.05em;margin-bottom:12px}.page-header h2{font-size:2.25rem;font-weight:800;margin-bottom:12px}.page-header p{color:var(--text-secondary);font-size:1.1rem}.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:40px}@media (max-width: 768px){.about-grid{grid-template-columns:1fr}}.about-card{background-color:var(--bg-secondary);border:1px solid var(--border-color);padding:30px;border-radius:var(--radius-lg);transition:var(--transition)}.about-card:hover{border-color:var(--border-color-hover)}.about-card h3{font-size:1.25rem;font-weight:700;margin-bottom:16px;color:var(--primary)}.about-card p{color:var(--text-secondary);font-size:.95rem;line-height:1.6}.tech-stack-section{background-color:#13192680;border:1px dashed var(--border-color);border-radius:var(--radius-md);padding:30px;text-align:center;margin-bottom:40px}.tech-stack-section h3{font-size:1.1rem;font-weight:700;color:var(--text-primary);margin-bottom:20px}.tech-logos{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}.tech-badge{background-color:var(--bg-primary);border:1px solid var(--border-color);color:var(--text-secondary);font-size:.85rem;font-weight:600;padding:8px 16px;border-radius:var(--radius-sm);transition:var(--transition)}.tech-badge:hover{color:var(--text-primary);border-color:var(--border-color-hover);transform:translateY(-1px)}.faq-list{display:flex;flex-direction:column;gap:16px;margin-bottom:40px}.faq-item{background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden;transition:var(--transition)}.faq-item:hover{border-color:var(--border-color-hover)}.faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;background:none;border:none;color:var(--text-primary);font-family:inherit;font-size:1.05rem;font-weight:600;text-align:left;padding:20px 24px;cursor:pointer;transition:var(--transition)}.faq-question:hover{color:var(--primary)}.faq-arrow{color:var(--text-muted);transition:var(--transition)}.faq-question:hover .faq-arrow{color:var(--primary)}.faq-answer{max-height:0;overflow:hidden;transition:all .3s cubic-bezier(.4,0,.2,1);background-color:#090d164d}.faq-answer.open{max-height:500px}.faq-answer p{padding:0 24px 20px;color:var(--text-secondary);font-size:.95rem;line-height:1.6}.privacy-content{display:flex;flex-direction:column;gap:24px;margin-bottom:40px}.privacy-block{background-color:var(--bg-secondary);border:1px solid var(--border-color);padding:30px;border-radius:var(--radius-lg);transition:var(--transition)}.privacy-block:hover{border-color:var(--border-color-hover)}.privacy-icon-title{display:flex;align-items:center;gap:12px;margin-bottom:16px}.p-icon{color:var(--primary)}.privacy-block h3{font-size:1.25rem;font-weight:700;color:var(--text-primary)}.privacy-block p{color:var(--text-secondary);font-size:.95rem;line-height:1.6}.contact-wrapper{background-color:var(--bg-secondary);border:1px solid var(--border-color);padding:40px;border-radius:var(--radius-lg);margin-bottom:40px;box-shadow:0 10px 30px -10px #00000080}.contact-form{display:flex;flex-direction:column;gap:24px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:24px}@media (max-width: 768px){.form-row{grid-template-columns:1fr}}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-size:.85rem;font-weight:600;color:var(--text-secondary)}.input-with-icon{position:relative}.form-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-muted)}.form-control{width:100%;padding:12px 14px 12px 42px;background-color:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-family:inherit;font-size:.95rem;outline:none;transition:var(--transition)}.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.form-control.text-area{padding-left:14px}.submit-form-btn{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border:none;border-radius:var(--radius-md);padding:14px;font-weight:600;font-size:1rem;cursor:pointer;transition:var(--transition)}.submit-form-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #3b82f64d}.contact-success-card{text-align:center;padding:20px 0;display:flex;flex-direction:column;align-items:center;gap:20px}.success-pulse{color:var(--success);animation:pulse 2s infinite}.contact-success-card h3{font-size:1.5rem;font-weight:700}.contact-success-card p{color:var(--text-secondary);font-size:1rem;max-width:480px;line-height:1.6}.center-action{display:flex;justify-content:center;margin-top:30px}.action-btn{background-color:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-primary);padding:12px 24px;border-radius:var(--radius-md);font-weight:600;font-size:.95rem;cursor:pointer;display:flex;align-items:center;gap:8px;transition:var(--transition)}.action-btn:hover{border-color:var(--text-muted);transform:translate(2px)}