*{box-sizing:border-box;margin:0;padding:0}:root{--primary:#5b67ca;--primary-light:#7180d6;--primary-dark:#4a55ad;--success:#10b981;--danger:#ef4444;--warning:#f59e0b;--bg:#fff;--bg-secondary:#f9fafb;--bg-tertiary:#f3f4f6;--text:#1f2937;--text-secondary:#6b7280;--text-tertiary:#9ca3af;--border:#e5e7eb;--border-light:#f0f1f3;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -2px #0000000d;--sans:"Inter", -apple-system, system-ui, sans-serif}html,body{width:100%;height:100%}body{background:var(--bg);color:var(--text);font-family:var(--sans);margin:0;font-size:16px;line-height:1.6}.navbar{background:var(--bg);border-bottom:1px solid var(--border);z-index:100;box-shadow:var(--shadow-sm);padding:16px 0;position:sticky;top:0}.nav-container{justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;padding:0 20px;display:flex}.logo-section{align-items:center;display:flex}.logo-link{color:var(--text);align-items:center;gap:12px;font-size:18px;font-weight:700;text-decoration:none;transition:color .2s;display:flex}.logo-link:hover{color:var(--primary)}.logo-link svg{width:24px;height:24px;color:var(--primary)}.logo-text{background:linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.nav-links{gap:32px;display:flex}.nav-links a{color:var(--text-secondary);font-size:14px;font-weight:500;text-decoration:none;transition:color .2s}.nav-links a:hover{color:var(--primary)}.hero{text-align:center;background:linear-gradient(135deg,#f9fafb 0%,#f3f4f6 100%);padding:80px 20px}.hero-content{max-width:800px;margin:0 auto}.hero-title{color:var(--text);margin-bottom:16px;font-size:48px;font-weight:700;line-height:1.2}.highlight{background:linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 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.3s}.drop-zone:hover{background:var(--bg-tertiary);border-color:var(--primary-light);box-shadow:var(--shadow-md)}.drop-zone.drag-over{border-color:var(--primary-light);box-shadow:var(--shadow-lg);background:linear-gradient(135deg,#5b67ca0d 0%,#7180d60d 100%);transform:scale(1.02)}.drop-zone-inner{flex-direction:column;align-items:center;gap:16px;display:flex}.drop-icon{color:var(--primary);width:64px;height:64px}.drop-title{color:var(--text);font-size:24px;font-weight:600}.drop-text{color:var(--text-secondary);font-size:16px}.drop-link{color:var(--primary);cursor:pointer;font-weight:600;text-decoration:none}.drop-link:hover{text-decoration:underline}.drop-hint{color:var(--text-tertiary);font-size:13px;font-weight:500}.controls-section{background:var(--bg-secondary);border:1px solid var(--border);border-radius:12px;margin-bottom:30px;padding:24px}.controls-row{flex-wrap:wrap;align-items:center;gap:24px;display:flex}.control-group{flex:1;min-width:250px}.control-group label{text-transform:uppercase;letter-spacing:.5px;color:var(--text-secondary);align-items:center;gap:8px;margin-bottom:12px;font-size:13px;font-weight:600;display:flex}.slider-value{color:var(--primary);font-weight:700}.slider{background:var(--border);appearance:none;cursor:pointer;border-radius:3px;outline:none;width:100%;height:6px}.slider::-webkit-slider-thumb{appearance:none;background:var(--primary);cursor:pointer;width:18px;height:18px;box-shadow:var(--shadow-md);border-radius:50%;transition:all .2s}.slider::-webkit-slider-thumb:hover{background:var(--primary-light);transform:scale(1.1)}.slider::-moz-range-thumb{background:var(--primary);cursor:pointer;width:18px;height:18px;box-shadow:var(--shadow-md);border:none;border-radius:50%;transition:all .2s}.slider::-moz-range-thumb:hover{background:var(--primary-light);transform:scale(1.1)}.stats-bar{background:var(--bg-secondary);border:1px solid var(--border);color:var(--text-secondary);border-radius:12px;align-items:center;gap:12px;margin-bottom:30px;padding:16px 20px;font-size:14px;font-weight:500;display:flex}.stat-item{color:var(--text);font-weight:600}.stat-divider{color:var(--border)}.results-section{margin-bottom:60px}.results-section.hidden{display:none}.results-header{margin-bottom:30px}.results-header h2{color:var(--text);font-size:24px;font-weight:700}.results-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;margin-bottom:30px;display:grid}.result-card{background:var(--bg-secondary);border:1px solid var(--border);box-shadow:var(--shadow-sm);border-radius:12px;flex-direction:column;gap:12px;padding:16px;transition:all .2s;animation:.3s both fadeUp;display:flex}.result-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-4px)}@keyframes 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6px;font-size:10px;font-weight:600;position:absolute;bottom:4px;right:4px}.meta{flex-direction:column;gap:8px;display:flex}.filename{color:var(--text);word-break:break-word;text-overflow:ellipsis;font-size:13px;font-weight:600;overflow:hidden}.size-comparison{color:var(--text-secondary);flex-wrap:wrap;align-items:center;gap:6px;font-size:12px;display:flex}.size-before{color:var(--text);font-weight:500}.arrow{color:var(--border)}.size-after{color:var(--success);font-weight:600}.badge.savings{color:#fff;background:var(--success);border-radius:6px;align-self:flex-start;padding:4px 10px;font-size:12px;font-weight:700;display:inline-block}.card-actions{gap:8px;margin-top:4px;display:flex}.card-actions button{flex:1}.btn{font-family:var(--sans);cursor:pointer;white-space:nowrap;border:none;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-size:14px;font-weight:600;transition:all .2s;display:inline-flex}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-md)}.btn-primary:not(:disabled):hover{background:var(--primary-light);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.btn-primary:not(:disabled):active{transform:translateY(0)}.btn-lg{padding:14px 32px;font-size:16px}.btn-secondary{background:var(--bg-tertiary);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--border-light);border-color:var(--text-tertiary)}.btn-download,.btn-recompress,.btn-remove{color:var(--text-secondary);border:1px solid var(--border);background:0 0;border-radius:6px;justify-content:center;align-items:center;padding:6px 8px;font-size:12px;font-weight:500;transition:all .2s;display:inline-flex}.btn-download:hover{color:var(--primary);border-color:var(--primary);background:#5b67ca0d}.btn-recompress:hover{color:var(--warning);border-color:var(--warning);background:#f59e0b0d}.btn-remove:hover{color:var(--danger);border-color:var(--danger);background:#ef44440d}.bulk-actions{flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:60px;display:flex}.bulk-actions.hidden{display:none}.result-card.skeleton{pointer-events:none;opacity:.6;animation:none}.skeleton-thumb{background:linear-gradient(90deg, var(--border-light) 25%, var(--border) 50%, var(--border-light) 75%);background-size:200% 100%;border-radius:8px;animation:1.5s infinite shimmer}.skeleton-line{background:linear-gradient(90deg, var(--border-light) 25%, var(--border) 50%, var(--border-light) 75%);background-size:200% 100%;border-radius:4px;height:12px;animation:1.5s infinite shimmer}.skeleton-button{background:linear-gradient(90deg, var(--border-light) 25%, var(--border) 50%, var(--border-light) 75%);background-size:200% 100%;border-radius:6px;flex:1;height:28px;animation:1.5s infinite shimmer}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.features-section{background:var(--bg-tertiary);padding:80px 20px}.features-section h2{text-align:center;color:var(--text);margin-bottom:48px;font-size:32px;font-weight:700}.features-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:32px;display:grid}.feature-card{background:var(--bg);border:1px solid var(--border);text-align:center;box-shadow:var(--shadow-sm);border-radius:12px;padding:32px 24px;transition:all .2s}.feature-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md);transform:translateY(-4px)}.feature-icon{margin-bottom:16px;font-size:40px}.feature-card h3{color:var(--text);margin-bottom:12px;font-size:18px;font-weight:600}.feature-card p{color:var(--text-secondary);font-size:14px;line-height:1.6}.footer{background:var(--text);color:#fff;padding:60px 20px 30px}.footer-content{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:40px;max-width:1200px;margin-bottom:40px;margin-left:auto;margin-right:auto;display:grid}.footer-section h4{color:#fff;margin-bottom:16px;font-size:16px;font-weight:600}.footer-section ul{padding:0;list-style:none}.footer-section li{margin-bottom:12px}.footer-section a{color:#ffffffb3;font-size:14px;text-decoration:none;transition:color .2s}.footer-section a:hover{color:#fff}.footer-bottom{text-align:center;color:#fff9;border-top:1px solid #ffffff1a;max-width:1200px;margin:0 auto;padding-top:30px;font-size:13px}@media (width<=768px){.nav-links{gap:16px}.hero-title{font-size:32px}.hero-subtitle{font-size:16px}.drop-zone{padding:40px 20px}.drop-icon{width:48px;height:48px}.drop-title{font-size:20px}.results-grid{grid-template-columns:1fr}.controls-row{flex-direction:column}.control-group{min-width:auto}.btn-lg{width:100%}.bulk-actions{flex-direction:column}.bulk-actions button{width:100%}}@media (width<=480px){.navbar{padding:12px 0}.logo-link{gap:8px;font-size:16px}.nav-links{gap:12px}.nav-links a{font-size:12px}.hero-title{font-size:24px}.hero{padding:40px 16px}.main-content,.drop-zone{padding:30px 16px}.badge{padding:6px 12px;font-size:12px}.features-section{padding:50px 16px}.features-section h2{margin-bottom:32px;font-size:24px}.footer-content{gap:24px}}.format-conversion{color:#fff;vertical-align:middle;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border-radius:12px;margin-left:8px;padding:2px 8px;font-size:11px;font-weight:600;animation:2s ease-in-out infinite formatPulse;display:inline-block;box-shadow:0 2px 4px #667eea4d}@keyframes formatPulse{0%,to{opacity:1}50%{opacity:.7}}.compression-failed{color:#fff;background:#ef4444;border-radius:12px;margin-left:8px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-block}