:root{--bg: #f6f7f9;--panel: #ffffff;--border: #d8dde3;--border-strong: #b8c0c8;--text: #1a1d22;--text-muted: #6b7280;--accent: #2563eb;--accent-hover: #1d4ed8;--danger: #dc2626;--shadow: 0 1px 2px rgba(0, 0, 0, .05), 0 1px 3px rgba(0, 0, 0, .04);--radius: 6px;--radius-sm: 4px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;color:var(--text);background:var(--bg)}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;width:100%;overscroll-behavior:none}body{background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button{font:inherit;cursor:pointer}input,select,textarea{font:inherit;color:inherit}.app{display:flex;flex-direction:column;height:100vh;width:100vw}.app-loading,.app-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;gap:12px;color:var(--text-muted)}.app-empty button{padding:10px 20px;background:var(--accent);color:#fff;border:0;border-radius:var(--radius-sm);font-weight:600}.app-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:var(--panel);border-bottom:1px solid var(--border);flex-shrink:0}.app-header h1{font-size:18px;margin:0;font-weight:600}.app-header h1 .muted{color:var(--text-muted);font-weight:400;font-size:14px}.header-actions{display:flex;gap:8px;align-items:center}.header-actions button,.header-actions a.header-link{padding:6px 12px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);text-decoration:none;font-size:13px}.header-actions button:hover,.header-actions a.header-link:hover{background:#eef1f5}.header-actions button.danger{color:var(--danger);border-color:#f1c4c4}.header-actions .pattern-switcher{padding:6px 8px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--panel);font-size:13px;max-width:240px}.global-error{background:#fef2f2;color:var(--danger);border-bottom:1px solid #fecaca;padding:8px 16px;font-size:13px;cursor:pointer;flex-shrink:0}.app-main{display:grid;grid-template-columns:260px 1fr 280px;flex:1;min-height:0}.left-panel,.right-panel{background:var(--panel);padding:14px;overflow-y:auto;display:flex;flex-direction:column;gap:16px}.left-panel{border-right:1px solid var(--border)}.right-panel{border-left:1px solid var(--border)}.right-panel h2{font-size:14px;margin:0 0 6px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted)}.canvas-area{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--bg)}.status-bar{margin:0;padding:8px 14px;font-size:12px;color:var(--text-muted);background:var(--panel);border-top:1px solid var(--border);flex-shrink:0}.pattern-canvas-wrapper{flex:1;min-height:0;overflow:auto;padding:20px;display:flex;align-items:flex-start;justify-content:center}.pattern-canvas{background:#fff;border:1px solid var(--border-strong);border-radius:var(--radius-sm);box-shadow:var(--shadow);display:block}.toolbar{display:flex;flex-wrap:wrap;gap:6px;padding:8px 14px;background:var(--panel);border-bottom:1px solid var(--border);flex-shrink:0}.toolbar button{padding:6px 10px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:13px}.toolbar button:hover{background:#eef1f5}.toolbar button.active{background:var(--accent);color:#fff;border-color:var(--accent)}.toolbar button.danger{color:var(--danger);border-color:#f1c4c4}.toolbar .separator{width:1px;background:var(--border);margin:4px}.pattern-controls{display:flex;flex-direction:column;gap:8px}.pattern-controls label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--text-muted)}.pattern-controls label.checkbox{flex-direction:row;align-items:center;gap:6px;color:var(--text);font-size:13px}.pattern-controls input[type=text],.pattern-controls input[type=number]{padding:6px 8px;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff;color:var(--text)}.pattern-controls input[type=range]{width:100%}.zoom-readout{font-size:11px;color:var(--text-muted);align-self:flex-end}.image-importer{display:flex;flex-direction:column;gap:8px;padding-top:8px;border-top:1px solid var(--border)}.image-importer .row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px}.image-importer label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--text-muted)}.image-importer input[type=number]{padding:4px 6px;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff;color:var(--text)}.image-importer .file-button{position:relative;display:inline-block;padding:8px 12px;background:var(--accent);color:#fff;text-align:center;border-radius:var(--radius-sm);cursor:pointer;font-size:13px;font-weight:500}.image-importer .file-button:hover{background:var(--accent-hover)}.image-importer .file-button input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}.image-importer .error{color:var(--danger);font-size:12px}.image-importer .hint{font-size:11px;color:var(--text-muted);margin:0;line-height:1.4}.color-palette{display:flex;flex-direction:column;gap:8px}.palette-header{display:flex;justify-content:space-between;align-items:baseline}.palette-name{font-size:12px;font-weight:600;color:var(--text)}.palette-count{font-size:11px;color:var(--text-muted)}.color-search{padding:6px 8px;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff;font-size:13px}.color-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:4px;max-height:360px;overflow-y:auto;padding:4px;background:#f1f3f5;border-radius:var(--radius-sm)}.color-swatch{position:relative;aspect-ratio:1;border:1px solid rgba(0,0,0,.1);border-radius:var(--radius-sm);cursor:pointer;padding:0;display:flex;align-items:flex-end;justify-content:center;overflow:hidden;transition:transform .08s ease}.color-swatch:hover{transform:scale(1.05);z-index:1}.color-swatch.selected{border:2px solid var(--accent);box-shadow:0 0 0 1px var(--accent);z-index:1}.color-code{font-size:8px;font-weight:600;color:#000000b3;background:#ffffffd9;padding:1px 2px;border-radius:2px;margin-bottom:1px;pointer-events:none;line-height:1}.color-empty{grid-column:1 / -1;text-align:center;padding:20px;color:var(--text-muted);font-size:12px}.thread-list{display:flex;flex-direction:column;gap:8px;margin-top:8px;padding-top:12px;border-top:1px solid var(--border)}.thread-list h3{font-size:12px;margin:0;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);font-weight:600}.thread-list ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}.thread-list li.selected .thread-row{background:#e6efff;border-color:var(--accent)}.thread-row{display:grid;grid-template-columns:20px 36px 1fr auto;align-items:center;gap:8px;width:100%;text-align:left;padding:4px 6px;background:transparent;border:1px solid transparent;border-radius:var(--radius-sm);color:var(--text);font-size:12px}.thread-row:hover{background:#f1f3f5}.thread-swatch{width:20px;height:20px;border-radius:3px;border:1px solid rgba(0,0,0,.1)}.thread-code{font-weight:600;font-family:ui-monospace,SF Mono,Consolas,monospace}.thread-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-muted)}.thread-count{font-variant-numeric:tabular-nums;color:var(--text-muted);font-size:11px}@media(max-width:1024px){.app-main{grid-template-columns:220px 1fr 240px}}@media(max-width:820px){.app-main{grid-template-columns:1fr;grid-template-rows:auto 1fr auto}.left-panel,.right-panel{border:none;border-bottom:1px solid var(--border);max-height:280px}}