*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #6366f1;--primary-dark: #4f46e5;--secondary-color: #8b5cf6;--success-color: #10b981;--error-color: #ef4444;--bg-color: #0f172a;--surface-color: #1e293b;--surface-light: #334155;--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--border-color: #334155;--shadow: 0 10px 25px rgba(0, 0, 0, .3)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:linear-gradient(135deg,#0f172a,#1e293b);color:var(--text-primary);min-height:100vh;padding:15px;line-height:1.5}.container{max-width:1200px;margin:0 auto}header{text-align:center;margin-bottom:2rem;padding:1.5rem 0}.header-main{display:flex;flex-direction:column;align-items:center;gap:1rem;margin-bottom:1rem}.header-title{font-size:2.5rem;font-weight:700;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:0;line-height:1.2;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:.75rem}.by-text{color:var(--text-secondary);font-size:1.2rem;font-weight:500;text-transform:uppercase;letter-spacing:1px;vertical-align:middle}.brand-link{display:inline-flex;align-items:center;text-decoration:none;color:var(--text-primary);transition:all .3s 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h2{margin-bottom:1.5rem;color:var(--text-primary);font-size:1.5rem}.settings-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin-bottom:1.5rem}.setting-item{display:flex;flex-direction:column;gap:.5rem}.setting-item label{color:var(--text-secondary);font-size:.9rem;font-weight:500}.setting-item select{background:var(--bg-color);border:1px solid var(--border-color);border-radius:8px;padding:.75rem;color:var(--text-primary);font-size:1rem;cursor:pointer;transition:all .2s ease}.setting-item select:hover{border-color:var(--primary-color)}.setting-item select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #6366f11a}.btn{padding:.875rem 2rem;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s 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h3{margin-bottom:1rem;color:var(--text-primary);font-size:1.25rem}.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:.75rem}.info-item{display:flex;flex-direction:column;gap:.25rem}.info-label{color:var(--text-secondary);font-size:.85rem;font-weight:500}.info-value{overflow:hidden;color:var(--text-primary);font-size:1rem;font-weight:600}.progress-section{background:var(--surface-color);border-radius:12px;padding:1.5rem;margin-bottom:1.5rem;box-shadow:var(--shadow);text-align:center}.progress-section h3{margin-bottom:1rem;color:var(--text-primary);font-size:1.25rem}.progress-preview-container{position:relative;width:100%;max-width:500px;margin:0 auto 1.5rem;border-radius:8px;overflow:hidden;background:var(--bg-color);aspect-ratio:16 / 9}.processing-preview{width:100%;height:100%;object-fit:cover;opacity:.3;filter:blur(2px)}.optimizing-overlay{position:absolute;top:0;left:0;right:0;bottom:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#0f172ab3;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.optimizing-animation{position:relative;width:120px;height:120px;margin-bottom:1rem}.pulse-ring{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:100%;height:100%;border:3px solid var(--primary-color);border-radius:50%;opacity:0;animation:pulse 2s cubic-bezier(.4,0,.6,1) infinite}.pulse-ring:nth-child(2){animation-delay:.5s}.pulse-ring:nth-child(3){animation-delay:1s}@keyframes pulse{0%{transform:translate(-50%,-50%) scale(.8);opacity:1}to{transform:translate(-50%,-50%) scale(1.5);opacity:0}}.optimizing-text{color:var(--text-primary);font-size:1.5rem;font-weight:600;text-transform:uppercase;letter-spacing:2px;animation:fadeInOut 2s ease-in-out 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h3{color:var(--text-primary);margin-bottom:.75rem;font-size:1.1rem;font-weight:600}.result-preview{margin-bottom:1rem;border-radius:8px;overflow:hidden;background:var(--bg-color)}.preview-video{width:100%;max-height:250px;display:block;border-radius:8px}.comparison-container{display:grid;grid-template-columns:1fr;gap:1rem;margin-bottom:1rem}.comparison-video{border-radius:8px;overflow:hidden;background:var(--bg-color)}.comparison-label{padding:.5rem;background:var(--surface-light);color:var(--text-secondary);font-size:.85rem;font-weight:600;text-align:center;text-transform:uppercase;letter-spacing:.5px}.comparison-video .preview-video{max-height:200px}@media (min-width: 1024px){.comparison-container{grid-template-columns:1fr 1fr;gap:1rem}.comparison-video .preview-video{max-height:250px}}.result-stats{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1rem}.stat-item{display:flex;justify-content:space-between;align-items:center;padding:.4rem 0;border-bottom:1px solid var(--border-color);font-size:.9rem}.stat-label{color:var(--text-secondary);font-size:.9rem}.stat-value{color:var(--text-primary);font-weight:600}.stat-value.success{color:var(--success-color)}.stat-value.error{color:var(--error-color)}.result-actions{display:flex;gap:1rem}.btn-download{flex:1;background:var(--primary-color);color:#fff;padding:.65rem 1.25rem;border:none;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s ease;text-decoration:none;display:inline-block;text-align:center}.btn-download:hover{background:var(--primary-dark);transform:translateY(-2px)}.error-message{background:#ef44441a;border:1px solid var(--error-color);border-radius:8px;padding:1rem;color:var(--error-color);margin-bottom:2rem}footer{text-align:center;padding:2rem 0;color:var(--text-secondary);font-size:.9rem;border-top:1px solid var(--border-color);margin-top:3rem}footer a{color:var(--primary-color);text-decoration:none;font-weight:600;transition:color .2s ease}footer a:hover{color:var(--secondary-color);text-decoration:underline}.resolution-note{color:var(--text-secondary);font-size:.85em;font-weight:400}@media (max-width: 768px){.header-title{font-size:2rem;flex-direction:column;gap:.5rem}.by-text{font-size:1rem}.brand-logo{width:28px;height:28px}.brand-name{font-size:1.2rem}.upload-area{padding:3rem 1.5rem}.settings-grid,.results-grid{grid-template-columns:1fr}}