/* ═══════════════════════════════════════════════════
   CUSTOMS TAB — Adobe UX pass Phase 4
   Custom-item authoring, patterned on the character viewer.
   Grammar: left rail (type + settings) · canvas + bottom library dock ·
   right rail (parts). Reuses the shared .maker-add / .maker-dock /
   cv-shell-section primitives + the SF2_CUSTOM backend.
   Scoped to .maker .tab-custom.
   ═══════════════════════════════════════════════════ */

.maker .tab-custom .panel-body.cust-body { display: flex; height: 100%; min-height: 0; }

/* ── Left rail (Settings) ── */
.maker .tab-custom .controls-col {
  flex: 0 0 var(--rail-left);
  width: var(--rail-left);
  border-right: 1px solid var(--border);
  padding: var(--sp-6) var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
  overflow-y: auto;
  background: var(--tab-active);
}

.maker .tab-custom .cust-type-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-2);
}
.maker .tab-custom .cust-type-btn {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--chrome-hi);
  color: var(--text-mid);
  padding: var(--sp-2) var(--sp-1);
  font-size: var(--fs-3);
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s, color 0.12s;
}
.maker .tab-custom .cust-type-btn:hover { border-color: var(--accent); color: var(--text); }
.maker .tab-custom .cust-type-btn.is-on {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, var(--chrome-hi));
  color: var(--accent-text);
}

.maker .tab-custom .cust-hint {
  margin: 0;
  font-size: var(--fs-3);
  color: var(--text-dim);
  line-height: 1.5;
}

/* ── Center (canvas + library dock) ── */
.maker .tab-custom .preview-col {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}
.maker .tab-custom .cust-canvas-frame { flex: 1 1 auto; min-height: 0; }

/* Create ▾ menu items (the .maker-add-menu chrome is shared) */
.maker .tab-custom .cust-add-opt {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  width: 100%;
  box-sizing: border-box;
  padding: var(--sp-2) var(--sp-3);
  border: 0;
  border-radius: var(--r);
  background: transparent;
  font-size: var(--fs-4);
  color: var(--text);
  text-align: left;
  cursor: pointer;
  white-space: nowrap;
}
.maker .tab-custom .cust-add-opt:hover { background: var(--accent-glow); }

/* ── Bottom dock (library) ── */
.maker .tab-custom .cust-library-dock { flex: 0 0 var(--dock-h); }
/* .maker-dock-header is shared (styles/maker/shell-layout.css). */
.maker .tab-custom .cust-library-hint { font-weight: 400; color: var(--text-dim); }
.maker .tab-custom .cust-library-grid {
  flex: 1;
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--thumb-lg), 1fr));
  gap: var(--sp-3);
  padding: var(--sp-3);
  align-content: start;
}
.maker .tab-custom .cust-library-empty { grid-column: 1 / -1; padding: var(--sp-5); }

.maker .tab-custom .cust-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--chrome-hi);
  cursor: pointer;
  font-size: var(--fs-2);
  color: var(--text-mid);
  transition: border-color 0.12s;
}
.maker .tab-custom .cust-card:hover { border-color: var(--accent); }
.maker .tab-custom .cust-card.is-active { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, var(--chrome-hi)); }
.maker .tab-custom .cust-card canvas,
.maker .tab-custom .cust-card img { width: 64px; height: 64px; object-fit: contain; image-rendering: pixelated; }

/* ── Right rail (Parts) ── */
.maker .tab-custom .cust-right-dock {
  flex: 0 0 var(--rail-right);
  width: var(--rail-right);
  border-left: 1px solid var(--border);
  padding: var(--sp-6) var(--sp-5);
  overflow-y: auto;
  background: var(--chrome-lo);
}
.maker .tab-custom .cust-parts-list { display: flex; flex-direction: column; gap: var(--sp-1); }