@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color 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components,utilities;:root{--background:#fff;--foreground:#171717;--primary:#e1306c;--primary-dark:#c13584;--accent:#833ab4;--card-bg:#f9f9f9;--border:#e0e0e0}@media (prefers-color-scheme:dark){:root{--background:#0a0a0a;--foreground:#ededed;--card-bg:#1a1a1a;--border:#333}}body{background:var(--background);color:var(--foreground);margin:0;padding:0;font-family:Arial,Helvetica,sans-serif}.navbar{justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;padding:1rem 2rem;display:flex;position:relative}.navbar .logo{background:linear-gradient(135deg, var(--accent), var(--primary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:1.5rem;font-weight:700;text-decoration:none}.navbar .nav-links{gap:1.5rem;margin:0;padding:0;list-style:none;display:flex}.navbar .nav-links a{color:var(--foreground);font-size:.9rem;font-weight:500;text-decoration:none;transition:color .2s}.navbar .nav-links a:hover{color:var(--primary)}.mobile-menu-btn{cursor:pointer;z-index:1000;background:0 0;border:none;padding:.5rem;display:none}.hamburger{flex-direction:column;gap:5px;width:24px;display:flex}.hamburger span{background:var(--foreground);border-radius:2px;width:100%;height:2px;transition:all .3s;display:block}.hamburger.open span:first-child{transform:rotate(45deg)translate(5px,5px)}.hamburger.open span:nth-child(2){opacity:0}.hamburger.open span:nth-child(3){transform:rotate(-45deg)translate(5px,-5px)}.hero{text-align:center;max-width:800px;margin:0 auto;padding:4rem 2rem 3rem}.hero .badge{background:linear-gradient(135deg, var(--accent), var(--primary));color:#fff;border-radius:999px;margin-bottom:1.5rem;padding:.4rem 1rem;font-size:.8rem;font-weight:600;display:inline-block}.hero h1{margin:0 0 1rem;font-size:3rem;font-weight:800;line-height:1.2}.hero p{color:#666;margin:0 0 2rem;font-size:1.1rem}.input-card{background:var(--card-bg);border:1px solid var(--border);border-radius:16px;max-width:700px;margin:0 auto;padding:1.5rem}.input-row{gap:.5rem;margin-bottom:1rem;display:flex}.input-row input{border:1px solid var(--border);background:var(--background);color:var(--foreground);border-radius:8px;outline:none;flex:1;min-width:0;padding:.8rem 1rem;font-size:1rem}.input-row input:focus{border-color:var(--primary)}.btn-paste{border:1px solid var(--border);background:var(--background);color:var(--foreground);cursor:pointer;white-space:nowrap;border-radius:8px;padding:.8rem 1.2rem;font-size:.9rem;font-weight:500;transition:all .2s}.btn-paste:hover{background:var(--card-bg)}.btn-download{background:linear-gradient(135deg, var(--accent), var(--primary));color:#fff;cursor:pointer;white-space:nowrap;border:none;border-radius:8px;padding:.8rem 1.5rem;font-size:.9rem;font-weight:600;transition:opacity .2s}.btn-download:hover{opacity:.9}@media (max-width:768px){.mobile-menu-btn{display:block}.navbar .nav-links{background:var(--background);border-top:1px solid var(--border);border-bottom:1px solid var(--border);flex-direction:column;gap:1rem;padding:1rem 2rem;position:absolute;top:100%;left:0;right:0;box-shadow:0 4px 6px #0000001a;display:none!important}.navbar .nav-links.active{display:flex!important}.nav-links li{text-align:center;width:100%}.nav-links a{padding:.75rem 0;font-size:1rem;display:block}.navbar{flex-wrap:wrap;padding:1rem}.navbar .logo{font-size:1.25rem}}@media (max-width:600px){.input-card{margin:0 1rem;padding:1rem}.input-row{flex-direction:column;gap:.75rem}.input-row input{box-sizing:border-box;width:100%;padding:.9rem 1rem;font-size:1rem}.btn-paste,.btn-download{text-align:center;width:100%;padding:.9rem 1rem;font-size:1rem}.tabs{flex-wrap:wrap;justify-content:center}.tab{text-align:center;flex:auto;min-width:0}.quality-btns{flex-direction:column}.hero h1{font-size:2rem}.hero p{font-size:1rem}.features{grid-template-columns:1fr;padding:0 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.2s;display:flex}.format-btn:hover{transform:translateY(-1px);box-shadow:0 2px 8px #00000014}.format-btn:active{transform:translateY(0)}.format-btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}.video-btn{border-left:3px solid var(--primary)}.video-btn:hover{border-color:var(--primary);background:var(--background)}.audio-btn{border-left:3px solid var(--accent)}.audio-btn:hover{border-color:var(--accent);background:var(--background)}.fb-left{align-items:center;gap:.5rem;min-width:0;display:flex}.fb-icon{border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:22px;height:22px;font-size:.75rem;display:flex}.video-btn .fb-icon{color:var(--primary);background:#e1306c1a}.audio-btn .fb-icon{color:var(--accent);background:#833ab41a}.fb-label{white-space:nowrap;font-weight:700}.video-btn .fb-label{color:var(--primary)}.audio-btn .fb-label{color:var(--accent)}.fb-ext{color:#999;background:var(--background);border:1px solid var(--border);border-radius:4px;padding:.1rem .4rem;font-size:.68rem;font-weight:500}.fb-right{color:#888;white-space:nowrap;font-size:.78rem;font-weight:500}.no-formats{color:#bbb;text-align:center;padding:.5rem;font-size:.8rem}.result-note{color:#bbb;text-align:center;margin:1rem 0 0;font-size:.72rem}.error-msg{color:#e74c3c;background:#e74c3c1a;border-radius:8px;margin:0 0 .75rem;padding:.5rem .75rem;font-size:.85rem}.progress-text{text-align:center;color:#999;margin-top:.5rem;font-size:.8rem;display:block}@media (max-width:600px){.preview-row{gap:.75rem}.preview-thumb-wrapper{width:80px;height:105px}.preview-title{font-size:.9rem}.preview-subtitle{font-size:.75rem}.format-columns{grid-template-columns:1fr;gap:1rem}.result{padding:.75rem}}.features{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem;max-width:1000px;margin:3rem auto;padding:0 2rem;display:grid}.feature-card{background:var(--card-bg);border:1px solid var(--border);text-align:center;border-radius:16px;padding:1.5rem}.feature-card .icon{margin-bottom:.75rem;font-size:2rem}.feature-card h3{margin:0 0 .5rem;font-size:1.1rem}.feature-card p{color:#666;margin:0;font-size:.9rem}.how-it-works{text-align:center;max-width:800px;margin:3rem auto;padding:0 2rem}.how-it-works h2{margin-bottom:2rem;font-size:2rem;font-weight:700}.steps{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;display:grid}.step{background:var(--card-bg);border:1px solid var(--border);border-radius:16px;padding:1.5rem}.step .step-number{background:linear-gradient(135deg, var(--accent), var(--primary));color:#fff;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;margin-bottom:.75rem;font-weight:700;display:inline-flex}.step h3{margin:0 0 .5rem;font-size:1rem}.step p{color:#666;margin:0;font-size:.85rem}.footer{text-align:center;border-top:1px solid var(--border);color:#666;margin-top:3rem;padding:2rem;font-size:.85rem}.footer a{color:var(--primary);text-decoration:none}.footer a:hover{text-decoration:underline}.section-title{text-align:center;margin:3rem 0 1.5rem;font-size:2rem;font-weight:700}