:root{--bg: #14161a;--panel: #1c1f26;--panel-hi: #232733;--fg: #e6e8ee;--muted: #97a0b0;--line: #2c313c;--accent: #6ea8fe;--accent-hover: #8bb9fe;--danger: #ea868f;--danger-hover: #f1aeb5;--success: #75db81}*{box-sizing:border-box;margin:0;padding:0;-webkit-user-select:none;user-select:none}body{background-color:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,PingFang SC,Microsoft YaHei,sans-serif;overflow:hidden;height:100vh}#root{height:100%}.app-container{display:flex;flex-direction:column;height:100vh;background-color:var(--bg);position:relative}.top-bar{display:flex;align-items:center;justify-content:space-between;height:56px;background-color:var(--panel);border-bottom:1px solid var(--line);padding:0 16px;z-index:10}.top-bar-left{display:flex;align-items:center;gap:16px}.brand{font-weight:700;font-size:16px;letter-spacing:.5px}.brand-accent{color:var(--accent)}.top-bar-center{display:flex;align-items:center;gap:12px}.top-bar-right{display:flex;align-items:center;gap:8px}.main-workspace{display:flex;flex:1;overflow:hidden;position:relative}.left-sidebar{width:60px;background-color:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;align-items:center;padding:16px 0;gap:12px;z-index:5}.right-sidebar{width:280px;background-color:var(--panel);border-left:1px solid var(--line);display:flex;flex-direction:column;z-index:5;overflow-y:auto}.viewport-container{flex:1;position:relative;overflow:hidden;background-color:#0b0c10;display:flex;align-items:center;justify-content:center}.btn{background-color:var(--panel-hi);border:1px solid var(--line);color:var(--fg);padding:6px 12px;border-radius:6px;font-size:13px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;transition:all .15s ease}.btn:hover:not(:disabled){border-color:var(--accent);background-color:var(--line)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background-color:var(--accent);color:var(--bg);border-color:var(--accent);font-weight:600}.btn-primary:hover:not(:disabled){background-color:var(--accent-hover);border-color:var(--accent-hover)}.btn-danger{background-color:transparent;border-color:var(--line);color:var(--danger)}.btn-danger:hover:not(:disabled){background-color:#ea868f1a;border-color:var(--danger)}.btn-icon{width:38px;height:38px;padding:0;justify-content:center;border-radius:8px}.btn-icon.active{background-color:var(--accent);color:var(--bg);border-color:var(--accent)}select.select-input{background-color:var(--panel-hi);border:1px solid var(--line);color:var(--fg);padding:6px 10px;border-radius:6px;font-size:13px;outline:none;cursor:pointer}select.select-input:focus{border-color:var(--accent)}.number-input{background-color:var(--panel-hi);border:1px solid var(--line);color:var(--fg);padding:6px 8px;border-radius:6px;font-size:13px;width:50px;text-align:center;outline:none}.number-input:focus{border-color:var(--accent)}.tool-section{display:flex;flex-direction:column;gap:8px;width:100%;align-items:center}.tool-divider{width:32px;height:1px;background-color:var(--line);margin:4px 0}.panel-section{padding:16px;border-bottom:1px solid var(--line)}.panel-title{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.8px;margin-bottom:12px;display:flex;justify-content:space-between;align-items:center}.color-picker-container{display:flex;flex-direction:column;gap:12px}.color-preview-row{display:flex;align-items:center;gap:12px}.color-swaps{position:relative;width:46px;height:46px}.color-box{width:30px;height:30px;border-radius:4px;border:2px solid #fff;box-shadow:0 0 0 1px #00000080;cursor:pointer;position:absolute}.color-box.primary{z-index:2;top:0;left:0}.color-box.secondary{z-index:1;bottom:0;right:0;border-color:#aaa}.color-box-input{opacity:0;position:absolute;top:0;left:0;width:100%;height:100%;cursor:pointer}.color-hex-input{flex:1;background-color:var(--panel-hi);border:1px solid var(--line);color:var(--fg);padding:8px 10px;border-radius:6px;font-size:13px;font-family:monospace;outline:none}.color-hex-input:focus{border-color:var(--accent)}.palette-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:6px;margin-top:12px}.palette-swatch{aspect-ratio:1;border-radius:4px;border:1px solid rgba(255,255,255,.1);cursor:pointer;transition:transform .1s ease}.palette-swatch:hover{transform:scale(1.15);border-color:#fff9}.layers-list{display:flex;flex-direction:column;gap:8px;max-height:240px;overflow-y:auto;margin-bottom:12px}.layer-item{display:flex;align-items:center;background-color:var(--panel-hi);border:1px solid var(--line);border-radius:6px;padding:8px;gap:8px;cursor:pointer;transition:all .15s ease}.layer-item.active{border-color:var(--accent);background-color:#6ea8fe0d}.layer-item:hover:not(.active){border-color:var(--muted)}.layer-visibility{background:none;border:none;color:var(--fg);cursor:pointer;display:flex;align-items:center;font-size:14px;padding:2px}.layer-visibility.hidden{color:var(--muted);opacity:.5}.layer-name{flex:1;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.layer-name-input{flex:1;background-color:var(--panel);border:1px solid var(--accent);color:var(--fg);font-size:13px;padding:2px 4px;border-radius:3px;outline:none}.layer-opacity-slider{width:50px;accent-color:var(--accent);cursor:pointer}.layer-actions{display:flex;align-items:center;gap:4px}.layer-action-btn{background:none;border:none;color:var(--muted);cursor:pointer;padding:2px;font-size:12px}.layer-action-btn:hover{color:var(--fg)}.layer-list-actions{display:flex;gap:8px}.brush-size-control{display:flex;flex-direction:column;align-items:center;gap:4px;font-size:10px;color:var(--muted)}.brush-size-dots{display:flex;align-items:center;justify-content:center;gap:4px;height:24px}.brush-dot{background-color:var(--muted);border-radius:50%;cursor:pointer}.brush-dot.active{background-color:var(--accent)}.status-bar{display:flex;justify-content:space-between;align-items:center;padding:0 16px;height:28px;background-color:var(--panel);border-top:1px solid var(--line);font-size:11.5px;color:var(--muted);z-index:10}.status-bar-item{display:flex;align-items:center;gap:6px}.checkerboard-bg{background-image:linear-gradient(45deg,#1c1f26 25%,transparent 25%),linear-gradient(-45deg,#1c1f26 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#1c1f26 75%),linear-gradient(-45deg,transparent 75%,#1c1f26 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0px;background-color:#121418;box-shadow:0 10px 30px #00000080;position:absolute;cursor:crosshair}.checkerboard-bg.panning{cursor:grab}.checkerboard-bg.panning:active{cursor:grabbing}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#000000b3;display:flex;align-items:center;justify-content:center;z-index:100}.modal-content{background-color:var(--panel);border:1px solid var(--line);border-radius:12px;padding:24px;width:320px;display:flex;flex-direction:column;gap:16px}.modal-title{font-size:16px;font-weight:700}.modal-form-group{display:flex;flex-direction:column;gap:6px}.modal-form-label{font-size:12px;color:var(--muted)}.modal-row{display:flex;gap:12px}.modal-footer{display:flex;justify-content:flex-end;gap:8px;margin-top:8px}.import-drop-overlay{position:absolute;top:0;right:0;bottom:0;left:0;z-index:40;display:flex;align-items:center;justify-content:center;background:#0b0c10b8;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);pointer-events:none}.import-drop-card{min-width:280px;max-width:420px;padding:22px 26px;border-radius:16px;border:1px dashed rgba(110,168,254,.8);background:#1c1f26eb;box-shadow:0 16px 40px #00000059;text-align:center}.import-drop-title{font-size:18px;font-weight:700;color:var(--fg)}.import-drop-text{margin-top:8px;font-size:13px;color:var(--muted);line-height:1.5}