/* ═══════════════════════════════════════════════════
   FEATURE — TILES TAB  (v2)
   All rules scoped under .studio .tab-tiles ONLY.
   Uses Studio tokens — no custom variables.
   Canvas: 1280×720  Tile: TW=90 TH=60  Sub-grid: 45×30
   ═══════════════════════════════════════════════════ */

/* ── Panel body ── */
.studio .tab-tiles .panel-body {
  grid-template-columns: 260px 1fr;
}

/* ── Controls column ── */
.studio .tab-tiles .controls-col {
  border-right: 1px solid var(--border);
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  background: #f8f8fa;
  scrollbar-width: thin;
}

/* ── Tool / Draw mode button rows ── */
.studio .tab-tiles .tiles-tool-row,
.studio .tab-tiles .tiles-mode-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.studio .tab-tiles .tiles-tbtn,
.studio .tab-tiles .tiles-mbtn {
  flex: 1;
  min-width: 0;
  padding: 4px 8px;
  font-size: 11px;
  border-radius: 5px;
  background: var(--chrome-lo);
  border: 1px solid var(--border-lo);
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.studio .tab-tiles .tiles-tbtn:hover,
.studio .tab-tiles .tiles-mbtn:hover {
  background: #fff;
  border-color: var(--accent);
}

.studio .tab-tiles .tiles-tbtn.active,
.studio .tab-tiles .tiles-mbtn.active {
  background: rgba(74, 158, 192, 0.15);
  border-color: var(--accent);
  color: var(--accent-text);
}


/* ── Tool tip ── */
.studio .tab-tiles .tiles-tool-tip {
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.5;
  margin-top: 4px;
}

/* ── Tileset picker ── */
.studio .tab-tiles .tiles-picker-box {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Tighten label inside picker — global label has 5px padding-bottom which is too much here */
.studio .tab-tiles .tiles-picker-box .groupbox-label {
  padding-bottom: 2px;
}

/* Breadcrumb */
.studio .tab-tiles .tiles-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px;
  margin-bottom: 4px;
}

.studio .tab-tiles .tiles-crumb-pill {
  background: var(--chrome-lo);
  border: 1px solid var(--border-lo);
  border-radius: 10px;
  padding: 1px 8px;
  font-size: 10px;
  color: var(--text-dim);
  cursor: pointer;
  transition: border-color 0.12s, color 0.12s;
  line-height: 1.6;
}

.studio .tab-tiles .tiles-crumb-pill:hover {
  border-color: var(--accent);
  color: var(--accent-text);
}

.studio .tab-tiles .tiles-crumb-sep {
  font-size: 10px;
  color: var(--text-dim);
  pointer-events: none;
}

/* Search input */
.studio .tab-tiles .tiles-search {
  width: 100%;
  box-sizing: border-box;
  padding: 5px 10px;
  border: 1px solid var(--border-lo);
  border-radius: 6px;
  background: var(--input-bg);
  color: var(--text);
  font-size: 12px;
  outline: none;
  transition: border-color 0.15s;
  margin-bottom: 6px;
}

.studio .tab-tiles .tiles-search:focus      { border-color: var(--accent); }
.studio .tab-tiles .tiles-search::placeholder { color: var(--text-dim); }

/* Picker list — 2-column card grid */
.studio .tab-tiles .tiles-plist {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--input-bg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  overflow-y: auto;
  flex: 1;
  min-height: 80px;
  max-height: 240px;
  scrollbar-width: thin;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  align-content: start;
  padding: 4px;
}

.studio .tab-tiles .tiles-plist::-webkit-scrollbar        { width: 8px; }
.studio .tab-tiles .tiles-plist::-webkit-scrollbar-track  {
  background: var(--chrome-lo);
  border-left: 1px solid var(--border);
  border-radius: 0 8px 8px 0;
}
.studio .tab-tiles .tiles-plist::-webkit-scrollbar-thumb  {
  background: var(--border-lo);
  border: 2px solid var(--chrome-lo);
  border-radius: 4px;
  min-height: 28px;
}
.studio .tab-tiles .tiles-plist::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* Picker item — card */
.studio .tab-tiles .tiles-pi {
  background: var(--chrome-lo);
  border: 1px solid var(--border);
  border-radius: 3px;
  cursor: pointer;
  padding: 5px 3px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  min-height: 84px;
  transition: border-color 0.1s, background 0.1s;
}

.studio .tab-tiles .tiles-pi:hover {
  border-color: var(--accent);
  background: rgba(74, 158, 192, 0.06);
}

.studio .tab-tiles .tiles-pi.sel {
  border-color: var(--accent);
  background: rgba(74, 158, 192, 0.15);
}

/* Thumbnail area */
.studio .tab-tiles .tiles-pi-th {
  width: 48px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.studio .tab-tiles .tiles-pi-th img {
  max-width: 48px;
  max-height: 56px;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

/* Loading pulse dot */
.studio .tab-tiles .tiles-pi-dot {
  width: 6px;
  height: 6px;
  background: var(--text-dim);
  border-radius: 50%;
  animation: tiles-pulse 1s infinite;
}

@keyframes tiles-pulse {
  0%, 100% { opacity: 0.3; }
  50%       { opacity: 1; }
}

.studio .tab-tiles .tiles-pi-label {
  font-size: 10px;
  color: var(--text-dim);
  text-align: center;
  width: 100%;
  box-sizing: border-box;
  padding: 0 3px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-height: 1.3;
}

.studio .tab-tiles .tiles-pi.sel .tiles-pi-label {
  color: var(--accent-text);
}

/* Status messages inside the list (span full width) */
.studio .tab-tiles .tiles-list-msg {
  grid-column: 1 / -1;
  padding: 12px 10px;
  font-size: 11px;
  color: var(--text-dim);
  text-align: center;
  line-height: 1.5;
}

.studio .tab-tiles .tiles-list-err {
  color: #c0392b;
}

/* Selected tileset strip */
.studio .tab-tiles .tiles-selstrip {
  margin-top: 6px;
  padding: 6px 8px;
  background: var(--chrome-lo);
  border: 1px solid var(--border-lo);
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.studio .tab-tiles .tiles-sel-label {
  font-size: 10px;
  color: var(--accent-text);
  font-weight: 600;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Manual slot grid ── */
.studio .tab-tiles .tiles-slot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(44px, 1fr));
  gap: 3px;
}

.studio .tab-tiles .tiles-slot-btn {
  padding: 3px 4px;
  font-size: 10px;
  background: var(--chrome-lo);
  border: 1px solid var(--border-lo);
  border-radius: 4px;
  color: var(--text-dim);
  cursor: pointer;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
}

.studio .tab-tiles .tiles-slot-btn:hover {
  background: #fff;
  border-color: var(--accent);
}

.studio .tab-tiles .tiles-slot-btn.active {
  background: rgba(74, 158, 192, 0.15);
  border-color: var(--accent);
  color: var(--accent-text);
}

/* ── Bottom action buttons ── */
.studio .tab-tiles .controls-bottom {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: auto;
  padding-top: 4px;
}

/* ── Preview toolbar action buttons ── */
.studio .tab-tiles .tiles-toolbar-btn {
  padding: 2px 7px;
  font-size: 11px;
  height: 22px;
  min-width: 52px;
  background: var(--chrome-lo);
  border: 1px solid var(--border-lo);
  border-radius: 4px;
  color: var(--text);
  cursor: pointer;
}

.studio .tab-tiles .tiles-toolbar-btn:hover {
  border-color: var(--accent);
  color: var(--accent-text);
}

.studio .tab-tiles .tiles-toolbar-btn.tiles-btn-danger {
  border-color: #c0392b;
  color: #c0392b;
}

/* ── Preview column ── */
.studio .tab-tiles .preview-col {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
}

/* ── Tiles canvas frame ── */
.studio .tab-tiles .tiles-canvas-frame {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
  background: #f0f0f0;
}

/* Scrollable viewport */
.studio .tab-tiles .tiles-vp {
  position: absolute;
  inset: 0;
  overflow: auto;
  cursor: crosshair;
  scrollbar-width: thin;
  scrollbar-color: rgba(0,0,0,0.2) transparent;
}

.studio .tab-tiles .tiles-vp::-webkit-scrollbar       { width: 10px; height: 10px; }
.studio .tab-tiles .tiles-vp::-webkit-scrollbar-track { background: transparent; }
.studio .tab-tiles .tiles-vp::-webkit-scrollbar-thumb {
  background: rgba(0,0,0,0.2);
  border-radius: 5px;
}
.studio .tab-tiles .tiles-vp::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.35); }

/* Canvas wrapper */
#tiles-cw {
  display: inline-block;
  margin: 20px;
  position: relative;
  line-height: 0;
}

#tiles-mc,
#tiles-oc {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  display: block;
}

/* ── Position label ── */
#tiles-pos-label {
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  color: var(--text-dim);
  font-family: ui-monospace, monospace;
  min-width: 60px;
  text-align: right;
}

/* ── Slot flyouts ─────────────────────────────────── */
.slot-flyout {
  position: fixed;
  background: #1e2229;
  border: 1px solid #444;
  border-radius: 6px;
  padding: 6px;
  z-index: 200;
  min-width: 200px;
  box-shadow: 0 4px 16px rgba(0,0,0,.6);
}
.slot-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  background: #2a2f3a;
  border: 1px solid #3a3f4a;
  border-radius: 4px;
  color: #dde;
  cursor: pointer;
  padding: 6px 8px;
  margin-bottom: 4px;
  text-align: left;
}
.slot-btn:hover:not(:disabled) { background: #353b4a; }
.slot-btn:disabled { opacity: .4; cursor: default; }
.slot-btn:last-child { margin-bottom: 0; }
.slot-thumb { width: 80px; height: 45px; object-fit: cover; border-radius: 3px; }
.slot-meta { font-size: 11px; color: #99a; }

/* ── Overwrite confirm ────────────────────────────── */
.confirm-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.55);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
}
.confirm-overlay[hidden] { display: none; }
.confirm-box {
  background: #1e2229;
  border: 1px solid #555;
  border-radius: 8px;
  padding: 20px 24px;
  max-width: 320px;
  text-align: center;
  color: #dde;
}
.confirm-box p { margin: 0 0 16px; }
.confirm-box button {
  padding: 7px 20px;
  border-radius: 5px;
  border: none;
  cursor: pointer;
  margin: 0 6px;
  font-weight: 600;
}
#tiles-confirm-yes { background: #c0392b; color: #fff; }
#tiles-confirm-no  { background: #444; color: #dde; }

/* ── Beta badge ── */
.studio .tab-tiles .tiles-beta-tag .version-tooltip {
  text-transform: none;
}

.studio .tab-tiles .tiles-beta-tag {
  display: inline-flex;
  align-items: center;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(220, 140, 40, 0.15);
  color: #b06010;
  border: 1px solid rgba(220, 140, 40, 0.35);
  border-radius: 4px;
  padding: 2px 7px;
  cursor: help;
  align-self: flex-start;
}