/* Brick Kit UI tokens (Figma "TK ·" mock-ups: warm translucent panels, rounded 14 px, blue selection ring) */
:root {
  --kit-panel: rgba(28, 30, 38, .78); --kit-panel2: rgba(255, 255, 255, .08); --kit-line: rgba(255, 255, 255, .16);
  --kit-text: #f4f1ea; --kit-soft: #c9c4b8; --kit-accent: #46a6ff; --kit-good: #5fd17a; --kit-bad: #ff6a5c; --kit-warn: #ffc94a;
  --kit-r: 14px; --kit-font: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}
.kit-palette, .kit-modes, .kit-toolbar, .kit-inspector, .kit-toast, .kit-tip { font-family: var(--kit-font); color: var(--kit-text); }
.kit-palette, .kit-palette * { box-sizing: border-box; }
.kit-palette { background: var(--kit-panel); backdrop-filter: blur(8px); border: 1px solid var(--kit-line); border-radius: var(--kit-r); padding: 10px; display: flex; flex-direction: column; gap: 8px; }
.kit-palette.left { width: 214px; max-height: calc(100% - 24px); overflow: auto; }
.kit-palette.sheet { width: 100%; border-radius: var(--kit-r) var(--kit-r) 0 0; max-height: 42vh; overflow: auto; }
.kit-cats { display: flex; flex-wrap: wrap; gap: 4px; }
.kit-cat { min-height: 34px; padding: 4px 10px; border-radius: 999px; border: 1px solid var(--kit-line); background: var(--kit-panel2); color: var(--kit-soft); font: 600 12px var(--kit-font); cursor: pointer; }
.kit-cat.on { color: #fff; border-color: var(--kit-accent); box-shadow: 0 0 0 2px rgba(70, 166, 255, .35) inset; }
.kit-slots { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; }
.kit-palette.sheet .kit-slots { grid-template-columns: repeat(auto-fill, minmax(76px, 1fr)); }
.kit-slot { min-height: 56px; border-radius: 10px; border: 1px solid var(--kit-line); background: var(--kit-panel2); color: var(--kit-text); cursor: pointer; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; padding: 4px; font: 600 11px var(--kit-font); }
.kit-slot .ic { font-size: 20px; line-height: 1; }
.kit-slot.on { border-color: var(--kit-accent); box-shadow: 0 0 0 2px var(--kit-accent) inset; background: rgba(70, 166, 255, .16); }
.kit-colours { display: grid; grid-template-columns: repeat(8, 1fr); gap: 4px; }
.kit-col { aspect-ratio: 1; min-width: 20px; border-radius: 6px; border: 2px solid rgba(0, 0, 0, .35); cursor: pointer; }
.kit-col.on { outline: 3px solid #fff; outline-offset: 1px; }
.kit-modes { display: flex; gap: 6px; }
.kit-mode, .kit-btn { min-height: 44px; min-width: 44px; padding: 6px 12px; border-radius: 12px; border: 1px solid var(--kit-line); background: var(--kit-panel); color: var(--kit-text); font: 600 13px var(--kit-font); cursor: pointer; display: inline-flex; align-items: center; gap: 6px; backdrop-filter: blur(8px); }
.kit-mode.on, .kit-btn.on { border-color: var(--kit-accent); background: rgba(70, 166, 255, .25); }
.kit-btn:disabled { opacity: .45; cursor: default; }
.kit-mode:focus-visible, .kit-btn:focus-visible, .kit-slot:focus-visible, .kit-cat:focus-visible, .kit-col:focus-visible { outline: 3px solid var(--kit-warn); outline-offset: 2px; }
.kit-toolbar { display: flex; flex-wrap: wrap; gap: 6px; }
.kit-toast { position: fixed; left: 50%; bottom: 18px; transform: translate(-50%, 30px); opacity: 0; transition: .25s; background: var(--kit-panel); border: 1px solid var(--kit-line); border-radius: 999px; padding: 10px 18px; font: 600 14px var(--kit-font); z-index: 50; pointer-events: none; max-width: calc(100% - 32px); }
.kit-toast.on { opacity: 1; transform: translate(-50%, 0); }
.kit-toast.good { border-color: var(--kit-good); } .kit-toast.bad { border-color: var(--kit-bad); }
.kit-tip { position: fixed; z-index: 60; width: 240px; transform: translateY(-100%); background: #11131a; border: 1px solid var(--kit-line); border-radius: 10px; padding: 8px 10px; font: 500 12px/1.4 var(--kit-font); opacity: 0; pointer-events: none; transition: opacity .15s; }
.kit-tip.on { opacity: 1; }
.kit-inspector { position: fixed; right: 12px; top: 72px; width: 260px; background: var(--kit-panel); border: 1px solid var(--kit-line); border-radius: var(--kit-r); padding: 12px 14px; z-index: 40; display: none; backdrop-filter: blur(8px); }
.kit-inspector.on { display: block; }
.kit-inspector h3 { margin: 0 0 6px; font-size: 15px; }
.kit-inspector dl { display: grid; grid-template-columns: auto 1fr; gap: 3px 10px; margin: 0; font-size: 12.5px; }
.kit-inspector dt { color: var(--kit-soft); } .kit-inspector dd { margin: 0; font-family: 'JetBrains Mono', ui-monospace, monospace; }
.kit-inspector .x { position: absolute; right: 8px; top: 6px; background: none; border: 0; color: var(--kit-soft); font-size: 20px; cursor: pointer; min-width: 32px; min-height: 32px; }
@media (max-width: 640px) { .kit-toolbar { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; } .kit-toolbar .kit-btn { flex: 0 0 auto; } .kit-inspector { left: 8px; right: 8px; width: auto; top: auto; bottom: 8px; } .kit-mode span:not(.ic), .kit-btn .lb { font-size: 12px; } }
@media (prefers-reduced-motion: reduce) { .kit-toast, .kit-tip { transition: none; } }