*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0e0e0e;--surface: #181818;--surface2: #222222;--border: #2e2e2e;--text: #e8e8e8;--muted: #888;--accent: #7c6af7;--accent-h: #9d8fff;--danger: #e05252;--radius: 10px;--gap: 16px}html,body,#root{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}.app{display:flex;flex-direction:column;min-height:100%}.header{border-bottom:1px solid var(--border);padding:20px 32px}.header h1{font-size:20px;font-weight:600;letter-spacing:-.3px}.header p{color:var(--muted);margin-top:2px;font-size:13px}.main{display:flex;flex:1;gap:0}.sidebar{width:260px;min-width:260px;border-right:1px solid var(--border);padding:var(--gap);display:flex;flex-direction:column;gap:var(--gap)}.content{flex:1;padding:var(--gap);display:flex;flex-direction:column;gap:var(--gap);min-width:0}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.card-title{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:12px}.drop-zone{border:2px dashed var(--border);border-radius:var(--radius);min-height:120px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:border-color .15s,background .15s;overflow:hidden}.drop-zone:hover,.drop-zone.dragging{border-color:var(--accent);background:#7c6af70f}.drop-zone.loading{cursor:default;pointer-events:none}.drop-zone-content{display:flex;flex-direction:column;align-items:center;gap:6px;color:var(--muted);padding:16px;text-align:center;pointer-events:none}.drop-icon{font-size:24px;color:var(--accent)}.drop-hint{font-size:11px;color:var(--border)}.drop-zone-preview{width:100%;height:100%;object-fit:cover;display:block}.color-list{display:flex;flex-direction:column;gap:8px;margin-bottom:10px}.color-row{display:flex;align-items:center;gap:8px}.swatch{width:28px;height:28px;border-radius:6px;border:2px solid rgba(255,255,255,.1);cursor:pointer;flex-shrink:0;transition:transform .1s}.swatch{cursor:pointer}.swatch:hover{transform:scale(1.1)}.color-picker{position:absolute;width:0;height:0;opacity:0;pointer-events:none}.color-hex{flex:1;font-family:monospace;font-size:12px;color:var(--muted)}.remove-btn{background:none;border:none;color:var(--muted);cursor:pointer;font-size:18px;line-height:1;padding:0 2px;border-radius:4px;transition:color .1s}.remove-btn:hover:not(:disabled){color:var(--danger)}.remove-btn:disabled{opacity:.2;cursor:default}.add-btn{width:100%;padding:8px;background:var(--surface2);border:1px dashed var(--border);border-radius:6px;color:var(--muted);cursor:pointer;font-size:13px;transition:border-color .15s,color .15s}.add-btn:hover{border-color:var(--accent);color:var(--accent-h)}.controls-card{padding:14px 16px}.controls-grid{display:grid;grid-template-columns:1fr 1fr 120px 120px;gap:12px}.control-group{display:flex;flex-direction:column;gap:5px}.control-group label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}select,input[type=number]{background:var(--surface2);border:1px solid var(--border);border-radius:6px;color:var(--text);padding:7px 10px;font-size:13px;-webkit-appearance:none;-moz-appearance:none;appearance:none;outline:none;transition:border-color .15s;width:100%}select{cursor:pointer}select:focus,input[type=number]:focus{border-color:var(--accent)}.preview-card{flex:1;display:flex;flex-direction:column;gap:12px;min-height:0}.preview-area{flex:1;background:var(--surface2);border-radius:6px;overflow:hidden;display:flex;align-items:center;justify-content:center;min-height:180px}.preview-img{width:100%;height:100%;object-fit:contain;display:block;transition:opacity .2s}.preview-updating{opacity:.6}.preview-placeholder{color:var(--muted);font-size:13px;display:flex;align-items:center;justify-content:center;height:100%}.preview-error{color:var(--danger);font-size:13px;padding:16px;text-align:center}.preview-footer{display:flex;justify-content:flex-end}.download-btn{background:var(--accent);border:none;border-radius:7px;color:#fff;cursor:pointer;font-size:13px;font-weight:500;padding:9px 18px;transition:background .15s,opacity .15s}.download-btn:hover:not(:disabled){background:var(--accent-h)}.download-btn:disabled{opacity:.4;cursor:default}.spinner{width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width: 800px){.main{flex-direction:column}.sidebar{width:100%;border-right:none;border-bottom:1px solid var(--border)}.controls-grid{grid-template-columns:1fr 1fr}}