:root{--bg: #16171a;--surface: #1e1f23;--surface-2: #26272c;--surface-3: #303137;--line: #34353b;--text: #e8e8ea;--muted: #9a9ba3;--accent: #5aaefc;--accent-ink: #0b1a2a;--warn: #f0b252;--danger: #ef6b5e;--radius: 8px;color-scheme:dark;font-family:Segoe UI,system-ui,-apple-system,Roboto,sans-serif;font-size:14px}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);overflow:hidden;touch-action:none}button{font:inherit;color:inherit}kbd{font:11px/1 ui-monospace,Consolas,monospace}#app{display:flex;flex-direction:column;height:100vh;height:100dvh}#topbar{display:flex;align-items:center;gap:8px;height:48px;padding:0 12px;background:var(--surface);border-bottom:1px solid var(--line);flex:none}.brand{display:flex;align-items:center;gap:8px;font-size:15px;letter-spacing:.2px}.brand i{width:20px;height:20px;color:var(--accent)}#file-info{color:var(--muted);margin-left:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}#file-info b{color:var(--text);font-weight:600}.unsaved-indicator{color:var(--warn);font-size:12px}.spacer{flex:1}.sep{width:1px;height:24px;background:var(--line);margin:0 4px}i[data-icon]{display:inline-flex;width:18px;height:18px;flex:none}i[data-icon] svg{width:100%;height:100%}.btn{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 14px;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface-2);cursor:pointer;white-space:nowrap}.btn:hover:not(:disabled){background:var(--surface-3)}.btn:disabled{opacity:.4;cursor:default}.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600}.btn.primary:hover:not(:disabled){filter:brightness(1.08);background:var(--accent)}.btn.ghost{background:transparent;border-style:dashed;color:var(--muted)}.btn.ghost:hover:not(:disabled){color:var(--text)}.btn.small{height:30px;padding:0 10px;font-size:13px}.btn.big{height:44px;padding:0 22px;font-size:15px}.icon-btn{display:inline-grid;place-items:center;width:34px;height:34px;border:0;border-radius:var(--radius);background:transparent;cursor:pointer}.icon-btn:hover:not(:disabled){background:var(--surface-3)}.icon-btn:disabled{opacity:.3;cursor:default}#main{flex:1;display:flex;min-height:0}#toolrail{flex:none;width:72px;display:flex;flex-direction:column;gap:4px;padding:8px 6px;background:var(--surface);border-right:1px solid var(--line);overflow-y:auto}.tool{position:relative;display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 2px 8px;border:1px solid transparent;border-radius:var(--radius);background:transparent;color:var(--muted);cursor:pointer;font-size:12px}.tool i[data-icon]{width:22px;height:22px}.tool kbd{position:absolute;top:4px;right:5px;opacity:.45}.tool:hover{color:var(--text);background:var(--surface-2)}.tool.active{color:var(--accent);background:#5aaefc1f;border-color:#5aaefc59}#viewport{position:relative;flex:1;min-width:0;background:radial-gradient(ellipse at 50% 40%,#2a2c31,#17181b 75%)}#viewer-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;outline:none}#overlay{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.height-bottom-popup{position:absolute;z-index:5;align-items:center;gap:5px;padding:5px 6px;border:1px solid rgba(255,255,255,.5);border-radius:5px;color:#24262a;background:#ffffffd1;box-shadow:0 2px 8px #0006;font-size:12px;pointer-events:auto}.height-bottom-popup label{display:flex;align-items:center;gap:5px}.height-bottom-popup input{width:68px;padding:2px 4px;border:1px solid #8b9097;border-radius:3px;background:#ffffffb3;color:#17191d;font:inherit}.height-bottom-popup button{width:23px;height:23px;border:0;border-radius:3px;color:#fff;background:#238a62;cursor:pointer}.lasso-path{fill-opacity:.18;stroke:#fff;stroke-width:1.5;stroke-dasharray:5 4}.lasso-path[data-mode=polygon-lasso]{stroke:var(--accent);stroke-dasharray:3 3}.lasso-path[data-mode=magnetic-lasso]{stroke:#69d7ca;stroke-dasharray:none}.polygon-finish-btn{position:absolute;z-index:6;left:50%;bottom:44px;transform:translate(-50%);min-height:38px;padding:0 14px;border:1px solid color-mix(in srgb,var(--accent) 70%,white);border-radius:999px;background:var(--accent);color:var(--accent-ink);font-weight:650;box-shadow:0 3px 14px #0006;cursor:pointer;touch-action:manipulation}.polygon-finish-btn:hover{filter:brightness(1.08)}.polygon-finish-btn[hidden]{display:none}.brush-ring{fill:none;stroke-width:2;filter:drop-shadow(0 0 1.5px rgba(0,0,0,.9))}#view-tools{position:absolute;top:10px;right:10px;display:flex;gap:2px;padding:3px;border-radius:10px;background:#1e1f23d1;border:1px solid var(--line)}#view-tools[hidden]{display:none}#view-tools button{min-width:34px;height:30px;padding:0 8px;display:inline-grid;place-items:center;border:0;border-radius:7px;background:transparent;color:var(--muted);font-size:12px;cursor:pointer}#view-tools button:hover{background:var(--surface-3);color:var(--text)}#view-tools i[data-icon]{width:16px;height:16px}#hint-bar{position:absolute;left:0;right:0;bottom:0;display:flex;gap:16px;justify-content:space-between;padding:8px 14px;font-size:12.5px;color:var(--muted);background:linear-gradient(transparent,#00000073);pointer-events:none}#status-text{color:var(--text)}#empty-state{position:absolute;inset:0;display:grid;place-items:center;padding:16px}#empty-state.hidden{display:none}.empty-card{max-width:460px;text-align:center;padding:32px 28px;border:1.5px dashed var(--line);border-radius:16px;background:#1e1f23bf}#viewport.drag-over .empty-card,#viewport.drag-over{outline:2px dashed var(--accent);outline-offset:-8px}.empty-icon i{width:44px;height:44px;color:var(--accent)}.empty-card h1{font-size:20px;margin:12px 0 8px;font-weight:600}.empty-card p{color:var(--muted);margin:0 0 18px;line-height:1.5}.steps{text-align:left;color:var(--muted);margin:22px 0 0;padding-left:20px;line-height:1.7;font-size:13px}.steps b{color:var(--text);font-weight:600}#busy{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:#101113b3;font-size:14px}#busy[hidden]{display:none}#busy-cancel{padding:8px 16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-3);color:var(--text);cursor:pointer}.spinner{width:34px;height:34px;border:3px solid var(--surface-3);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#toast{position:absolute;bottom:46px;left:50%;transform:translate(-50%);max-width:min(560px,calc(100% - 32px));padding:10px 14px;border-radius:var(--radius);background:var(--surface-3);border:1px solid var(--line);box-shadow:0 6px 24px #0006;font-size:13px}#toast.error{border-color:var(--danger)}#toast[hidden]{display:none}#sidepanel{flex:none;width:280px;overflow-y:auto;background:var(--surface);border-left:1px solid var(--line);touch-action:pan-y}.panel{padding:14px 14px 16px;border-bottom:1px solid var(--line)}.panel>header{display:flex;justify-content:space-between;align-items:baseline;font-weight:600;margin-bottom:10px;font-size:13px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted)}.panel>header span:first-child{color:var(--text)}.muted{color:var(--muted);font-weight:400}#slot-list{display:flex;flex-direction:column;gap:4px;margin-bottom:10px}.slot{display:grid;grid-template-columns:auto 30px 1fr auto auto;align-items:center;gap:8px;padding:5px 6px;border-radius:var(--radius);border:1px solid transparent;cursor:pointer}.slot:hover{background:var(--surface-2)}.slot.active{background:#5aaefc1a;border-color:#5aaefc73}.slot-num{width:14px;font-size:11px;color:var(--muted);text-align:right}.swatch{width:30px;height:30px;border-radius:6px;border:1px solid rgba(255,255,255,.18);box-shadow:inset 0 0 0 1px #00000040;cursor:pointer;padding:0}.slot-name{min-width:0;border:1px solid transparent;background:transparent;color:var(--text);font:inherit;padding:3px 4px;border-radius:4px}.slot-name[readonly]{pointer-events:none;cursor:pointer}.slot-name:not([readonly]){outline:none;border-color:var(--accent);background:var(--bg)}.slot-usage{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}.slot-del{width:26px;height:26px;opacity:0}.slot:hover .slot-del{opacity:.7}.slot-del:hover{opacity:1;color:var(--danger)}.slot-del i[data-icon]{width:15px;height:15px}.slot.base .slot-name::placeholder{color:var(--muted)}.warn{color:var(--warn);font-size:12.5px;line-height:1.45;margin:10px 0 0}#color-input{position:fixed;left:-100px;top:0;width:1px;height:1px;opacity:0}#tool-desc{font-size:13px;line-height:1.5;margin:0 0 14px}.field{margin:0 0 12px}.field label{display:flex;justify-content:space-between;font-size:13px;margin-bottom:6px}.field output{color:var(--accent);font-variant-numeric:tabular-nums}.number-pair{display:grid;grid-template-columns:1fr 16px 1fr;align-items:center;gap:6px;margin-bottom:8px;text-align:center;color:var(--muted)}.number-pair input,.text-input,.select-input{width:100%;min-width:0;height:32px;border:1px solid var(--line);border-radius:6px;background:var(--surface-2);color:var(--text);padding:0 8px;font:inherit}.full{width:100%;justify-content:center}.text-preview{fill-opacity:.38;paint-order:stroke;stroke:#fff;stroke-opacity:.95;stroke-width:1.5px;stroke-linejoin:round;filter:drop-shadow(0 0 2px rgba(0,0,0,.95));font-weight:700;pointer-events:none}.pattern-preview{opacity:.55;filter:drop-shadow(0 0 2px rgba(0,0,0,.95));pointer-events:none}.pattern-outline{fill:none;stroke:#fff;stroke-width:1.4px;stroke-dasharray:5 4;filter:drop-shadow(0 0 2px rgba(0,0,0,.95));pointer-events:none}.pattern-upload{cursor:pointer;margin:7px 0 12px}.pattern-upload:hover{border-color:var(--accent)}.brush-tip-grid{display:grid;gap:8px;margin:0 0 10px}.brush-tip-category{color:var(--muted);font-size:11px;font-weight:650;text-transform:uppercase;letter-spacing:.06em}.brush-tip-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px}.brush-tip{min-width:0;min-height:62px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;border:1px solid var(--line);border-radius:6px;background:var(--surface-2);color:var(--muted);cursor:pointer;padding:4px 2px}.brush-tip:hover{border-color:var(--muted);color:var(--text)}.brush-tip.active{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 14%,var(--surface-2));color:var(--text);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--accent) 35%,transparent)}.brush-tip img{width:34px;height:34px;object-fit:contain;filter:brightness(0) invert(1);pointer-events:none}.brush-tip span{width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:center;font-size:10px;line-height:1.25}input[type=range]{width:100%;accent-color:var(--accent)}.range-ends{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin-top:2px}.check{display:flex;gap:8px;align-items:flex-start;font-size:13px;line-height:1.4;margin:0 0 10px;cursor:pointer}.check input{margin-top:2px;accent-color:var(--accent)}[data-for].off{display:none}.shortcuts{display:grid;grid-template-columns:auto 1fr;gap:6px 12px;margin:0;font-size:12.5px}.shortcuts dt{color:var(--text);font-family:ui-monospace,Consolas,monospace;font-size:12px}.shortcuts dd{margin:0;color:var(--muted)}dialog{max-width:540px;border:1px solid var(--line);border-radius:14px;background:var(--surface);color:var(--text);padding:22px 26px;line-height:1.55}dialog::backdrop{background:#0000008c}dialog h2{margin:0 0 10px;font-size:19px}dialog h3{margin:16px 0 4px;font-size:14px;color:var(--accent)}dialog p{margin:0;color:#c9cad0;font-size:13.5px}dialog form{margin-top:20px;text-align:right}@media (max-width: 760px){#topbar{padding:0 6px;gap:4px}.brand b,#file-info,.btn span{display:none}.brand{margin-right:4px}.btn{padding:0 10px}#main{flex-direction:column}#viewport{order:1}#toolrail{order:3;width:auto;flex-direction:row;padding:4px 8px calc(4px + env(safe-area-inset-bottom));border-right:0;border-top:1px solid var(--line)}.tool{flex:1;flex-direction:row;justify-content:center;padding:8px 4px;font-size:13px}.tool kbd,#toolrail .spacer{display:none}#sidepanel{order:2;width:auto;max-height:34vh;border-left:0;border-top:1px solid var(--line)}#shortcuts-panel,#mouse-hint{display:none}#view-tools button:not([data-view=fit]):not([data-view=front]):not([data-view=back]){display:none}.panel{padding:10px 12px}#slot-list{flex-direction:row;overflow-x:auto;gap:6px;touch-action:pan-x}.slot{grid-template-columns:30px;padding:4px}.slot-num,.slot-name,.slot-usage,.slot-del{display:none}.swatch{width:38px;height:38px}#tool-desc{display:none}}