.app{display:flex;flex-direction:column;height:100vh;width:100vw;background:var(--bg)}.topbar{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border-bottom:1px solid var(--border);background:var(--panel);height:48px;flex-shrink:0}.brand{display:flex;align-items:center;gap:10px}.brand-mark{width:18px;height:18px;border-radius:4px;background:linear-gradient(135deg,var(--accent),#a78bfa);box-shadow:0 0 12px #60a5fa66}.brand-name{font-weight:600;font-size:14px;letter-spacing:.2px}.brand-tag{font-size:11px;color:var(--text-dim);padding:2px 6px;border:1px solid var(--border);border-radius:999px}.status{font-size:12px;color:var(--text-dim)}.layout{display:grid;grid-template-columns:260px 1fr 340px;height:calc(100vh - 48px);min-height:0}.panel{background:var(--panel);border-right:1px solid var(--border);overflow-y:auto;min-height:0}.panel.right{border-right:none;border-left:1px solid var(--border)}.panel.center{background:var(--bg);display:flex;flex-direction:column;min-height:0;overflow-y:auto;overflow-x:hidden}.panel-title{font-size:11px;font-weight:700;letter-spacing:1.2px;text-transform:uppercase;color:var(--text-dim);margin:14px 16px 6px}.group{padding:10px 16px;border-bottom:1px solid var(--border)}.group-title{font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;color:var(--text-dim);margin:0 0 8px}.seg{display:flex;gap:6px}.seg.vertical{flex-direction:column}.seg-btn{flex:1;padding:8px 10px;background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:6px;font-size:12px;text-transform:capitalize;cursor:pointer;transition:background .15s,border-color .15s}.seg-btn:hover{border-color:#3a4254}.seg-btn.active{background:var(--accent-2);border-color:var(--accent-2);color:#fff}.stack{display:flex;flex-direction:column;gap:6px}.btn{padding:9px 10px;background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:6px;font-size:12px;cursor:pointer;transition:background .15s,border-color .15s,transform .05s}.btn:hover{border-color:#3a4254}.btn:active{transform:translateY(1px)}.btn.primary{background:var(--accent-2);border-color:var(--accent-2);color:#fff}.btn.primary:hover{background:var(--accent)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.danger{background:#2a1516;border-color:#5b1f23;color:#fca5a5}.btn.danger:hover{background:#3a1b1d}.btn.full{width:100%}.input{width:100%;padding:7px 9px;background:var(--panel-2);border:1px solid var(--border);border-radius:6px;font-size:12px;color:var(--text);outline:none}.input:focus{border-color:var(--accent)}.input.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:11px}.color-row{display:flex;gap:8px;align-items:center}.color-input{width:44px;height:34px;background:transparent;border:1px solid var(--border);border-radius:6px;padding:0;cursor:pointer}.center-viewer{flex:1;min-height:0;display:flex;position:relative;background:#0e1117}.panel.center.dragging-over{outline:2px dashed var(--accent);outline-offset:-6px}.center-drop-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#0a101c8c;backdrop-filter:blur(2px);pointer-events:none;z-index:5}.center-drop-card{padding:16px 22px;border-radius:10px;background:var(--panel-2);border:1px dashed var(--accent);box-shadow:0 4px 24px #00000080;text-align:center}.center-drop-title{font-size:14px;font-weight:600;color:var(--text)}.center-drop-sub{font-size:11px;color:var(--text-dim);margin-top:4px}.viewer-root{position:relative;width:100%;height:100%}.viewer-canvas{position:absolute;inset:0}.viewer-canvas>canvas{display:block;width:100%!important;height:100%!important}.viewer-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:24px;text-align:center;color:var(--text-dim);font-size:13px;pointer-events:none}.viewer-overlay .warn{color:var(--warn);max-width:420px;line-height:1.5}.viewer-overlay .error{color:var(--danger);max-width:420px;line-height:1.5}.viewer-overlay code{background:var(--panel-2);padding:1px 6px;border-radius:4px;font-size:12px}.center-editor{flex:0 0 auto;position:relative;z-index:1;padding:14px 16px;border-top:1px solid var(--border);background:var(--panel);display:flex;flex-direction:column;gap:8px;align-items:flex-start}.canvas2d-wrapper{width:360px;height:360px;background:repeating-conic-gradient(#1a1f28 0% 25%,#20252f 0% 50%) 50% / 20px 20px;border:1px solid var(--border);border-radius:6px;overflow:hidden}.canvas2d{display:block;width:100%;height:100%;touch-action:none}.hint{color:var(--text-dim);font-size:11px;margin:0}.layer-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:4px;max-height:240px;overflow-y:auto}.layer-item{display:flex;align-items:center;gap:8px;padding:6px 8px;background:var(--panel-2);border:1px solid var(--border);border-radius:6px;cursor:pointer;font-size:12px}.layer-item:hover{border-color:#3a4254}.layer-item.selected{border-color:var(--accent);background:#1a2230}.layer-dot{width:8px;height:8px;border-radius:2px;flex-shrink:0}.layer-dot.side-front{background:#34d399}.layer-dot.side-back{background:#a78bfa}.layer-name{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.layer-actions{display:flex;gap:2px}.icon-btn{background:transparent;border:none;color:var(--text-dim);padding:2px 6px;border-radius:4px;cursor:pointer;font-size:12px}.icon-btn:hover{background:#2a313f;color:var(--text)}.icon-btn.danger:hover{color:var(--danger)}.layer-empty{color:var(--text-dim);font-size:12px;padding:8px 2px}.controls{display:flex;flex-direction:column;gap:6px}.row{display:grid;grid-template-columns:64px 1fr 60px;gap:8px;align-items:center}.label{font-size:11px;color:var(--text-dim)}.range{width:100%}.num{width:100%;padding:4px 6px;background:var(--panel-2);border:1px solid var(--border);border-radius:4px;font-size:11px;color:var(--text);outline:none}.num:focus{border-color:var(--accent)}.meta{font-size:10px;color:var(--text-dim);padding-top:4px}.empty{color:var(--text-dim);font-size:12px}.fill-editor{display:flex;flex-direction:column;gap:6px}.fill-editor-label{font-size:11px;color:var(--text-dim)}.presets{display:grid;grid-template-columns:repeat(11,minmax(0,1fr));gap:4px}.presets.tall{grid-template-columns:repeat(4,minmax(0,1fr))}.preset{height:20px;border:1px solid var(--border);border-radius:4px;padding:0;cursor:pointer;transition:transform .08s,border-color .12s}.presets.tall .preset{height:28px;border-radius:5px}.preset:hover{transform:translateY(-1px);border-color:var(--accent)}.preset.active{border-color:var(--accent);box-shadow:0 0 0 2px #60a5fa59}.gradient-track-wrap{position:relative;height:46px;margin:4px 0 16px;user-select:none;touch-action:none}.gradient-track{position:absolute;left:0;right:0;top:0;height:28px;border-radius:6px;border:1px solid var(--border);background-color:#000;background-image:linear-gradient(45deg,#222 25%,transparent 25%),linear-gradient(-45deg,#222 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#222 75%),linear-gradient(-45deg,transparent 75%,#222 75%);background-size:12px 12px;background-position:0 0,0 6px,6px -6px,-6px 0px;cursor:copy}.gradient-stops{position:absolute;left:0;right:0;top:24px;height:18px}.gradient-stop{position:absolute;top:0;transform:translate(-50%);width:14px;height:18px;border-radius:3px;border:2px solid var(--panel);outline:1px solid var(--border);padding:0;cursor:grab;transition:transform .08s}.gradient-stop.active{outline-color:var(--accent);transform:translate(-50%) scale(1.15)}.gradient-stop:active{cursor:grabbing}.uploader{display:flex;flex-direction:column;gap:6px}.dropzone{padding:18px 12px;border:1px dashed #3a4254;border-radius:8px;text-align:center;cursor:pointer;background:var(--panel-2);transition:border-color .15s,background .15s}.dropzone:hover{border-color:var(--accent)}.dropzone.over{border-color:var(--accent);background:#172234}.dropzone.disabled{opacity:.5;cursor:not-allowed}.dz-title{font-size:12px;color:var(--text)}.dz-sub{font-size:11px;color:var(--text-dim);margin-top:4px}.uploader-error{font-size:11px;color:var(--warn)}.toast{position:fixed;bottom:16px;left:50%;transform:translate(-50%);background:var(--panel-2);border:1px solid var(--border);color:var(--text);padding:10px 14px;border-radius:8px;font-size:12px;box-shadow:0 4px 20px #0006;z-index:100;max-width:80vw}.panel::-webkit-scrollbar,.layer-list::-webkit-scrollbar{width:10px}.panel::-webkit-scrollbar-thumb,.layer-list::-webkit-scrollbar-thumb{background:#2a313f;border-radius:6px}@media (max-width: 1000px){.layout{grid-template-columns:1fr;grid-template-rows:auto 1fr auto;overflow-y:auto}.panel.left,.panel.right{border-left:none;border-right:none;border-bottom:1px solid var(--border)}}:root{--bg: #0f1115;--panel: #161a22;--panel-2: #1c212b;--border: #242a36;--text: #e6e8ee;--text-dim: #9aa3b2;--accent: #60a5fa;--accent-2: #3b82f6;--danger: #ef4444;--warn: #f59e0b;--ok: #22c55e;color-scheme:dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg)}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;width:100%;overflow:hidden}button{font-family:inherit}input,select,textarea{font-family:inherit;color:var(--text)}