:root{--bg-dark:#09090b;--bg-panel:#18181b;--bg-panel-hover:#27272a;--text-primary:#f4f4f5;--text-secondary:#a1a1aa;--accent:#3b82f6;--accent-hover:#2563eb;--border:#27272a;--radius:12px;--radius-sm:6px;--font-body:"Outfit", sans-serif;--transition:all .2s ease}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);background-color:var(--bg-dark);color:var(--text-primary);-webkit-font-smoothing:antialiased;height:100vh;overflow:hidden}h1{align-items:center;gap:8px;font-size:24px;font-weight:700;display:flex}h3{text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);margin-bottom:12px;font-size:14px;font-weight:600}.app-layout{height:100vh;display:flex}.sidebar{background-color:var(--bg-panel);border-right:1px solid var(--border);z-index:10;flex-direction:column;width:400px;padding:32px;display:flex;overflow-y:auto;box-shadow:10px 0 30px #00000080}.main-content{background:radial-gradient(circle,#18181b 0%,#09090b 100%);flex-direction:column;flex:1;display:flex;position:relative}.logo{align-items:center;margin-bottom:8px;display:flex}.logo-icon{filter:drop-shadow(0 0 10px #3b82f680);margin-right:12px;font-size:28px}.badge{color:#60a5fa;background:#3b82f633;border:1px solid #3b82f64d;border-radius:20px;margin-left:12px;padding:2px 8px;font-size:11px;font-weight:600}.subtitle{color:var(--text-secondary);margin-bottom:40px;font-size:14px;line-height:1.5}.config-section{margin-bottom:32px}.file-uploader{border:2px dashed var(--border);border-radius:var(--radius);cursor:pointer;transition:var(--transition);background-color:#ffffff05;flex-direction:column;align-items:center;gap:12px;padding:24px;display:flex;position:relative}.file-uploader:hover{border-color:var(--accent);background-color:#3b82f60d}.file-uploader svg{color:var(--accent)}.file-uploader span{color:var(--text-primary);font-size:14px;font-weight:600}.file-uploader input[type=file]{opacity:0;cursor:pointer;width:100%;height:100%;position:absolute;top:0;left:0}.file-count{color:var(--accent);margin-top:8px;font-size:13px;font-weight:600}.input-group{flex-direction:column;flex:1;gap:8px;margin-bottom:16px;display:flex}.input-row{gap:16px;display:flex}.input-group label{color:var(--text-secondary);font-size:13px;font-weight:500}.input-field,.select-field{background-color:var(--bg-dark);border:1px solid var(--border);color:var(--text-primary);border-radius:var(--radius-sm);font-family:var(--font-body);transition:var(--transition);width:100%;padding:12px 16px;font-size:14px}.select-field{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f4f4f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-position:right 16px center;background-repeat:no-repeat;background-size:16px;padding-right:48px}.input-field:focus,.select-field:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 2px #3b82f633}.color-picker{appearance:none;border-radius:var(--radius-sm);cursor:pointer;background-color:var(--bg-dark);border:none;width:100%;height:42px;padding:2px}.color-picker::-webkit-color-swatch-wrapper{padding:0}.color-picker::-webkit-color-swatch{border:1px solid var(--border);border-radius:4px}.slider{appearance:none;background:var(--border);border-radius:3px;outline:none;width:100%;height:6px;margin-top:18px}.slider::-webkit-slider-thumb{appearance:none;background:var(--accent);cursor:pointer;border-radius:50%;width:18px;height:18px;transition:all .1s}.slider::-webkit-slider-thumb:hover{transform:scale(1.2)}.action-section{border-top:1px solid var(--border);margin-top:auto;padding-top:24px}.btn{border-radius:var(--radius-sm);width:100%;font-family:var(--font-body);cursor:pointer;transition:var(--transition);border:none;justify-content:center;align-items:center;padding:16px;font-size:15px;font-weight:700;display:flex;position:relative}.btn-primary{background-color:var(--accent);color:#fff;box-shadow:0 4px 15px #3b82f64d}.btn-primary:hover:not(:disabled){background-color:var(--accent-hover);transform:translateY(-2px);box-shadow:0 6px 20px #3b82f666}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}.footer-note{text-align:center;color:var(--text-secondary);margin-top:16px;font-size:12px}.progress-box{margin-top:16px}.progress-bar{background-color:var(--border);border-radius:3px;height:6px;margin-bottom:8px;overflow:hidden}.progress-fill{background-color:var(--accent);width:0%;height:100%;transition:width .1s linear}.progress-text{color:var(--text-secondary);text-align:center;font-variant-numeric:tabular-nums;font-size:12px}.preview-header{border-bottom:1px solid #ffffff0d;justify-content:space-between;align-items:center;padding:24px 40px;display:flex}.preview-info{color:var(--accent);background:#3b82f61a;border-radius:12px;padding:4px 12px;font-size:13px}.preview-container{flex:1;justify-content:center;align-items:center;padding:40px;display:flex;overflow:hidden}.empty-state{text-align:center;color:var(--text-secondary);flex-direction:column;align-items:center;gap:16px;display:flex}.empty-icon{filter:grayscale()opacity(.2);font-size:48px}#preview-canvas{object-fit:contain;border:1px solid var(--border);border-radius:4px;max-width:100%;max-height:100%;box-shadow:0 20px 50px #00000080}.drop-overlay{z-index:100;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);border:4px dashed var(--accent);transition:var(--transition);background:#09090be6;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.drop-message{text-align:center;pointer-events:none}.drop-icon{margin-bottom:16px;font-size:64px;animation:1s infinite alternate bounce;display:block}.hidden{opacity:0;pointer-events:none;display:none!important}.toast{background-color:var(--bg-panel);color:#fff;border-radius:var(--radius-sm);border-left:4px solid var(--accent);opacity:0;z-index:1000;padding:16px 24px;font-weight:600;transition:all .3s cubic-bezier(.175,.885,.32,1.275);position:fixed;bottom:24px;right:24px;transform:translateY(100px);box-shadow:0 10px 25px #00000080}.toast.show{opacity:1;transform:translateY(0)}.loader{border:3px solid #ffffff4d;border-top-color:#fff;border-radius:50%;width:20px;height:20px;animation:1s ease-in-out infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@keyframes bounce{0%{transform:translateY(0)}to{transform:translateY(-20px)}}.preview-nav{align-items:center;gap:8px;display:flex}.nav-btn{background:var(--bg-dark);border:1px solid var(--border);color:var(--text-primary);border-radius:var(--radius-sm);cursor:pointer;width:32px;height:32px;transition:var(--transition);justify-content:center;align-items:center;font-weight:700;display:flex}.nav-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.nav-btn:disabled{opacity:.3;cursor:not-allowed}.seo-footer{text-align:center;border-top:1px solid var(--border);margin-top:auto;padding:24px}.seo-footer ul{flex-wrap:wrap;justify-content:center;gap:16px;margin:0;padding:0;list-style:none;display:flex}.seo-footer a{color:var(--text-secondary);transition:var(--transition);font-size:13px;text-decoration:none}.seo-footer a:hover{color:var(--text-primary);text-decoration:underline}@media (width<=900px){.app-layout{flex-direction:column;height:auto;display:block}body{height:auto;overflow:visible}.sidebar{border-right:none;border-bottom:1px solid var(--border);width:100%;box-shadow:none;padding:24px}.main-content{min-height:60vh}.preview-container{min-height:400px;padding:16px}.preview-header{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:20;background:#09090be6;padding:16px 24px;position:sticky;top:0}}