:root{--font-body: "Inter", system-ui, -apple-system, sans-serif;--font-heading: "Outfit", system-ui, -apple-system, sans-serif;--bg-main: #0b0f19;--bg-gradient: radial-gradient(circle at 50% -20%, #1e1b4b 0%, #0f172a 50%, #080c14 100%);--card-bg: rgba(30, 41, 59, .65);--card-hover-bg: rgba(30, 41, 59, .85);--card-border: rgba(255, 255, 255, .08);--card-border-glow: rgba(99, 102, 241, .3);--accent-primary: #6366f1;--accent-secondary: #a855f7;--accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);--accent-hover-gradient: linear-gradient(135deg, #4f46e5 0%, #9333ea 100%);--text-main: #f8fafc;--text-muted: #94a3b8;--text-dim: #64748b;--success-color: #10b981;--warning-color: #f59e0b;--danger-color: #ef4444;--radius-sm: .5rem;--radius-md: .75rem;--radius-lg: 1.25rem;--radius-xl: 2rem;--shadow-main: 0 20px 30px -10px rgba(0, 0, 0, .5);--shadow-glow: 0 0 25px rgba(99, 102, 241, .25);--transition-fast: .2s cubic-bezier(.4, 0, .2, 1);--transition-normal: .3s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-body);background:var(--bg-main);background-image:var(--bg-gradient);background-attachment:fixed;color:var(--text-main);line-height:1.6;min-height:100vh;display:flex;flex-direction:column;overflow-x:hidden}h1,h2,h3,h4{font-family:var(--font-heading);letter-spacing:-.02em;font-weight:700;color:var(--text-main)}a{color:inherit;text-decoration:none;transition:color var(--transition-fast)}.hidden{display:none!important}.toast-container{position:fixed;top:1.5rem;right:1.5rem;z-index:9999;display:flex;flex-direction:column;gap:.75rem;pointer-events:none}.toast{pointer-events:auto;min-width:280px;padding:1rem 1.25rem;border-radius:var(--radius-md);background:#0f172ae6;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--card-border);box-shadow:0 10px 25px -5px #0006;color:var(--text-main);font-size:.9rem;display:flex;align-items:center;gap:.75rem;animation:slideInRight .3s ease-out forwards}.toast.success{border-color:var(--success-color)}.toast.info{border-color:var(--accent-primary)}.toast.error{border-color:var(--danger-color)}@keyframes slideInRight{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.navbar{position:sticky;top:0;z-index:1000;background:#0b0f19cc;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid var(--card-border);padding:1rem 1.5rem}.nav-container{max-width:1140px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}.brand-logo{display:flex;align-items:center;gap:.6rem;font-family:var(--font-heading);font-size:1.5rem;font-weight:800}.logo-icon{width:2.2rem;height:2.2rem;background:var(--accent-gradient);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;box-shadow:var(--shadow-glow)}.logo-highlight{color:var(--accent-primary)}.nav-links{display:flex;gap:1.75rem}.nav-links a{font-size:.95rem;font-weight:500;color:var(--text-muted);display:flex;align-items:center;gap:.4rem}.nav-links a:hover{color:var(--text-main)}.main-content{max-width:1140px;width:100%;margin:0 auto;padding:3rem 1.5rem;flex:1}.card{background:var(--card-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:2rem;margin-bottom:2rem;box-shadow:var(--shadow-main);transition:border-color var(--transition-normal)}.card:hover{border-color:var(--card-border-glow)}.hero-section{text-align:center;max-width:850px;margin:0 auto 4rem}.hero-badge{display:inline-flex;align-items:center;gap:.5rem;padding:.4rem 1rem;background:#6366f11f;border:1px solid rgba(99,102,241,.3);color:#a5b4fc;border-radius:9999px;font-size:.85rem;font-weight:600;margin-bottom:1.5rem}.hero-title{font-size:3rem;line-height:1.15;margin-bottom:1rem;background:linear-gradient(135deg,#fff,#cbd5e1);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero-subtitle{font-size:1.15rem;color:var(--text-muted);margin-bottom:2.5rem}.hero-subtitle strong{color:#a855f7}.converter-card{padding:1.25rem}.input-wrapper{display:flex;align-items:center;gap:.75rem;background:#0f172acc;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-md);padding:.4rem .5rem .4rem 1rem;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.input-wrapper:focus-within{border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f133}.input-icon{color:var(--text-dim);font-size:1.1rem}.url-input{flex:1;background:transparent;border:none;outline:none;color:var(--text-main);font-size:1rem;font-family:inherit;padding:.6rem 0}.url-input::placeholder{color:var(--text-dim)}.btn-primary,.btn-secondary{border:none;font-family:inherit;font-size:.95rem;font-weight:600;padding:.75rem 1.4rem;border-radius:var(--radius-sm);cursor:pointer;display:inline-flex;align-items:center;gap:.5rem;transition:all var(--transition-fast)}.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-glow)}.btn-primary:hover{background:var(--accent-hover-gradient);transform:translateY(-1px)}.btn-secondary{background:#ffffff14;color:var(--text-muted)}.btn-secondary:hover{background:#ffffff26;color:var(--text-main)}.loader-content{text-align:center;padding:1.5rem;color:var(--text-muted)}.spinner{width:2.5rem;height:2.5rem;border:3px solid rgba(255,255,255,.1);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 1rem}@keyframes spin{to{transform:rotate(360deg)}}.video-info-layout{display:flex;gap:1.5rem;align-items:center;text-align:left}.thumb-container{position:relative;width:220px;flex-shrink:0;border-radius:var(--radius-md);overflow:hidden;box-shadow:0 8px 20px #0006}.thumb-img{width:100%;height:125px;object-fit:cover;display:block}.duration-badge{position:absolute;bottom:.5rem;right:.5rem;background:#000c;color:#fff;font-size:.75rem;padding:.2rem .5rem;border-radius:4px;font-weight:600}.video-details{flex:1}.video-title{font-size:1.3rem;margin-bottom:.75rem;line-height:1.3}.meta-pills{display:flex;gap:1rem;flex-wrap:wrap}.meta-pill{font-size:.85rem;color:var(--text-muted);display:inline-flex;align-items:center;gap:.4rem;background:#ffffff0d;padding:.3rem .75rem;border-radius:9999px}.format-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;flex-wrap:wrap;gap:1rem}.tab-group{display:flex;background:#0f172acc;padding:.3rem;border-radius:var(--radius-md);border:1px solid var(--card-border)}.tab-btn{background:transparent;border:none;color:var(--text-muted);padding:.5rem 1.25rem;font-family:inherit;font-size:.9rem;font-weight:600;border-radius:var(--radius-sm);cursor:pointer;display:flex;align-items:center;gap:.5rem;transition:all var(--transition-fast)}.tab-btn.active{background:var(--accent-gradient);color:#fff;box-shadow:0 4px 12px #6366f14d}.quality-badge{font-size:.8rem;color:var(--success-color);background:#10b9811a;border:1px solid rgba(16,185,129,.25);padding:.3rem .75rem;border-radius:9999px;font-weight:600}.table-responsive{width:100%;overflow-x:auto}.format-table{width:100%;border-collapse:collapse;text-align:left}.format-table th{padding:.9rem 1rem;font-size:.8rem;color:var(--text-dim);font-weight:700;text-transform:uppercase;letter-spacing:.05em;border-bottom:1px solid var(--card-border)}.format-table td{padding:1rem;font-size:.95rem;border-bottom:1px solid rgba(255,255,255,.04)}.format-table tr:last-child td{border-bottom:none}.text-right{text-align:right}.quality-tag{display:inline-flex;align-items:center;gap:.4rem;font-weight:600}.quality-tag.high{color:#a855f7}.quality-tag.normal{color:var(--accent-primary)}.progress-section{margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid var(--card-border)}.progress-info-row{display:flex;justify-content:space-between;font-size:.9rem;margin-bottom:.5rem}.status-message{color:var(--accent-primary);font-weight:500}.progress-percent{font-weight:700;color:var(--text-main)}.progress-bar-bg{width:100%;height:8px;background:#0f172ae6;border-radius:9999px;overflow:hidden}.progress-bar-fill{height:100%;background:var(--accent-gradient);border-radius:9999px;transition:width .3s ease}.section-container{margin-bottom:5rem}.section-header{text-align:center;margin-bottom:3rem}.section-title{font-size:2.25rem;margin-bottom:.75rem}.section-subtitle{color:var(--text-muted);font-size:1.05rem}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.75rem}.feature-card{background:var(--card-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:2rem;transition:transform var(--transition-normal),border-color var(--transition-normal)}.feature-card:hover{transform:translateY(-4px);border-color:var(--card-border-glow)}.feature-icon{width:3rem;height:3rem;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:1.25rem}.icon-purple{background:#a855f726;color:#c084fc}.icon-indigo{background:#6366f126;color:#818cf8}.icon-emerald{background:#10b98126;color:#34d399}.icon-rose{background:#f43f5e26;color:#fb7185}.icon-amber{background:#f59e0b26;color:#fbbf24}.icon-cyan{background:#06b6d426;color:#22d3ee}.feature-card h3{font-size:1.2rem;margin-bottom:.5rem}.feature-card p{font-size:.92rem;color:var(--text-muted);line-height:1.5}.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.75rem}.step-card{position:relative;background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:2rem;text-align:center}.step-number{width:2.75rem;height:2.75rem;background:var(--accent-gradient);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-size:1.2rem;font-weight:800;margin:0 auto 1.25rem;box-shadow:var(--shadow-glow)}.step-card h3{font-size:1.15rem;margin-bottom:.5rem}.step-card p{font-size:.9rem;color:var(--text-muted)}.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:1rem}.faq-item{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--radius-md);overflow:hidden;transition:border-color var(--transition-fast)}.faq-question{width:100%;background:transparent;border:none;padding:1.25rem 1.5rem;color:var(--text-main);font-family:var(--font-heading);font-size:1.05rem;font-weight:600;text-align:left;cursor:pointer;display:flex;justify-content:space-between;align-items:center}.faq-icon{color:var(--text-muted);transition:transform var(--transition-fast)}.faq-item.active .faq-icon{transform:rotate(180deg);color:var(--accent-primary)}.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s cubic-bezier(0,1,0,1),padding .3s ease;padding:0 1.5rem;color:var(--text-muted);font-size:.95rem}.faq-item.active .faq-answer{max-height:200px;padding:0 1.5rem 1.25rem}.footer{background:#080c14f2;border-top:1px solid var(--card-border);padding:4rem 1.5rem 2rem;margin-top:auto}.footer-container{max-width:1140px;margin:0 auto;display:flex;justify-content:space-between;gap:3rem;flex-wrap:wrap;margin-bottom:3rem}.footer-brand{max-width:380px}.footer-desc{margin-top:1rem;font-size:.9rem;color:var(--text-muted)}.footer-links-group{display:flex;gap:4rem;flex-wrap:wrap}.footer-col h4{font-size:1rem;margin-bottom:1rem;color:var(--text-main)}.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:.6rem}.footer-col a{font-size:.9rem;color:var(--text-muted)}.footer-col a:hover{color:var(--accent-primary)}.footer-bottom{max-width:1140px;margin:0 auto;padding-top:2rem;border-top:1px solid rgba(255,255,255,.05);text-align:center;font-size:.85rem;color:var(--text-dim)}@media(max-width:768px){.hero-title{font-size:2.2rem}.nav-links{display:none}.video-info-layout{flex-direction:column;text-align:center}.thumb-container{width:100%}.thumb-img{height:180px}.meta-pills{justify-content:center}.input-wrapper{flex-direction:column;align-items:stretch;padding:.75rem}.btn-primary,.btn-secondary{justify-content:center}.format-card-header{flex-direction:column;align-items:stretch}.footer-links-group{gap:2rem}}.legal-card{max-width:1140px;margin:1.5rem auto;padding:1.5rem 2rem;background:#0f172a99;border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-md);text-align:left}.legal-card h3{font-size:1.2rem;color:var(--text-main);margin-bottom:.5rem}.legal-card p{font-size:.9rem;color:var(--text-muted);line-height:1.6}