/* ─────────────────────────────────────────────────────────────────────────────
   Design tokens — ported from the "Kitchen planner UI design" handoff
   (Planer Kuchni UI v2.dc.html, variant 2b, Broadsheet design system).
   Only the tokens and component classes the planner uses are shipped.
   ───────────────────────────────────────────────────────────────────────────── */
:root {
  --color-bg:      #f3f2f2;
  --color-surface: #eae9e9;
  --color-text:    #201e1d;
  --color-accent:  #0088b0;
  --color-divider: color-mix(in srgb, #201e1d 16%, transparent);

  --color-neutral-300: #d7d3d3;

  --color-accent-100: #e9f8ff;
  --color-accent-600: #1186ac;
  --color-accent-700: #006786;
  --color-accent-800: #004961;
  --color-accent-900: #0a303e;

  --color-accent-2-100: #fff1f4;
  --color-accent-2-700: #aa0b56;

  --radius-sm: 1px;
  --radius-md: 2px;
  --radius-lg: 4px;

  --font-body: 'IBM Plex Sans', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  background: var(--color-bg);
  color: var(--color-text);
  height: 100vh;
  overflow: hidden;
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: var(--color-neutral-300); border-radius: var(--radius-lg); }
::-webkit-scrollbar-track { background: transparent; }

:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

#app { height: 100vh; display: flex; flex-direction: column; overflow: hidden; }

/* ── Loading overlay ── */
#loading {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--color-bg);
  transition: opacity 0.35s;
}

#loading.done { opacity: 0; pointer-events: none; }

.loading-spinner {
  width: 42px;
  height: 42px;
  border: 3px solid var(--color-surface);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: loading-spin 0.9s linear infinite;
}

@keyframes loading-spin { to { transform: rotate(360deg); } }

.loading-text { font-size: 15px; font-weight: 600; }
.loading-sub  { font-size: 12px; opacity: 0.55; min-height: 16px; }

/* ── Header ── */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 20px;
}

.brand {
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.spacer { flex: 1; }

/* ── Segmented control ── */
.seg {
  display: inline-flex;
  overflow: hidden;
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
}

.seg-block { display: flex; width: 100%; }
.seg-block .seg-opt { flex: 1; justify-content: center; }

.seg-opt {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 12px;
  white-space: nowrap;
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}

.seg-opt + .seg-opt { border-left: 1px solid var(--color-divider); }

.seg-opt input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.seg-opt:has(input:checked) { background: var(--color-accent); color: var(--color-bg); }
.seg-opt:not(:has(input:checked)):hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.seg-opt:has(input:focus-visible) { outline: 2px solid var(--color-accent); outline-offset: -2px; }

#right-rail .seg-opt { padding: 5px 10px; }

/* ── Tags ── */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  letter-spacing: 0.02em;
  padding: 3px 10px;
  border-radius: calc(var(--radius-md) * 0.75);
  white-space: nowrap;
  flex-shrink: 0;
}

.tag-accent  { background: var(--color-accent-100); color: var(--color-accent-800); }
.tag-outline { border: 1px solid var(--color-divider); }
.tag-danger  { background: var(--color-accent-2-100); color: var(--color-accent-2-700); animation: danger-pulse 1.1s ease-in-out infinite; }

/* Author styles beat the UA's [hidden] rule on .tag (display:inline-flex) —
   restore it explicitly so toggling the attribute works */
.tag[hidden] { display: none; }

@keyframes danger-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.55; }
}

/* ── Body ── */
.body {
  flex: 1;
  display: flex;
  gap: 12px;
  padding: 0 12px 12px;
  min-height: 0;
}

/* ── Catalogue column ── */
#sidebar {
  width: 256px;
  flex-shrink: 0;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cat-group { display: flex; flex-direction: column; }

.cat-label {
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.55;
  padding: 4px 8px;
}

.item-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 5px 8px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background 0.12s;
}

.item-btn:hover  { background: var(--color-accent-100); }
.item-btn.active { background: var(--color-accent-100); box-shadow: inset 0 0 0 1px var(--color-accent); }

.item-btn svg { flex-shrink: 0; color: var(--color-accent-700); }

.item-name {
  flex: 1;
  min-width: 0;
  font-size: 12.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item-dim {
  font-size: 10.5px;
  opacity: 0.55;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* ── Viewport ── */
.viewport {
  flex: 1;
  min-width: 0;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-accent-900);
}

.viewport canvas { position: absolute; top: 0; left: 0; display: block; }
canvas.placing  { cursor: crosshair; }
canvas.grabbing { cursor: grabbing; }
canvas.hovering { cursor: grab; }

/* Status message — floats over the top-left corner of the 3D view */
#status-chip {
  position: absolute;
  z-index: 1;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  pointer-events: none;
  font-size: 11.5px;
  color: var(--color-accent-100);
  text-shadow: 0 0 2px var(--color-accent-900), 0 1px 4px var(--color-accent-900);
}

#status-msg {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Bottom overlay — key legend + camera buttons */
.vp-overlay {
  position: absolute;
  z-index: 1;
  left: 12px;
  right: 12px;
  bottom: 12px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 11.5px;
  color: var(--color-accent-100);
  text-shadow: 0 0 2px var(--color-accent-900), 0 1px 4px var(--color-accent-900);
}

.vp-key { display: flex; align-items: center; gap: 5px; white-space: nowrap; }

.vp-key kbd {
  font: inherit;
  font-size: 10px;
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-700);
}

.vp-zoom { display: flex; gap: 4px; }

.vp-zoom .btn-icon {
  width: 28px;
  height: 28px;
  background: var(--color-surface);
  border-color: var(--color-surface);
  color: var(--color-text);
}

/* ── Right column ── */
#right-rail {
  width: 212px;
  flex-shrink: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 4px 8px;
}

.rail-group { display: flex; flex-direction: column; gap: 8px; }

.rail-label {
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.55;
}

.hint { font-size: 10.5px; line-height: 1.35; opacity: 0.55; }

/* ── Fields ── */
.field { display: flex; flex-direction: column; gap: 3px; }

.field label {
  font-size: 11px;
  color: color-mix(in srgb, var(--color-text) 70%, transparent);
}

.input {
  width: 100%;
  height: 30px;
  padding: 0 8px;
  font: inherit;
  font-size: 12.5px;
  color: var(--color-text);
  caret-color: var(--color-accent);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
}

.input:hover { border-color: color-mix(in srgb, var(--color-text) 45%, transparent); }
.input:focus-visible { border-color: var(--color-accent); outline-offset: 0; }

/* ── Saved layouts (right rail) ── */
.layout-list { display: flex; flex-direction: column; }

.layout-row { display: flex; align-items: stretch; }

.layout-open {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background 0.12s;
}

.layout-open:hover { background: var(--color-accent-100); }

.layout-name {
  flex: 1;
  min-width: 0;
  font-size: 12.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.layout-meta {
  font-size: 10.5px;
  opacity: 0.55;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.layout-del {
  width: 26px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: 16px;
  line-height: 1;
  opacity: 0.45;
  cursor: pointer;
  transition: background 0.12s, opacity 0.12s;
}

.layout-del:hover { opacity: 1; background: var(--color-accent-2-100); color: var(--color-accent-2-700); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 12.5px;
  line-height: 1.2;
  color: var(--color-text);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.btn svg { display: block; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary { background: var(--color-accent); color: var(--color-bg); }
.btn-primary:hover  { background: var(--color-accent-600); }
.btn-primary:active { background: var(--color-accent-700); }

.btn-secondary { border-color: var(--color-divider); }
.btn-secondary:hover  { background: color-mix(in srgb, var(--color-text) 7%, transparent); }
.btn-secondary:active { background: color-mix(in srgb, var(--color-text) 14%, transparent); }

.btn-ghost { color: var(--color-accent); }
.btn-ghost:hover  { background: color-mix(in srgb, var(--color-accent) 10%, transparent); }
.btn-ghost:active { background: color-mix(in srgb, var(--color-accent) 18%, transparent); }

.btn-icon { padding: 0; }
.btn-block { width: 100%; height: 32px; }