/* Planner — Phase 4 scaffolding (Plan 04-01).
 * Three-region grid, palette tokens, save indicator, focus rings.
 * Plans 04-02..04-05 will append rules for tools, popup editor, manifold,
 * mobile fallback, and a11y refinements.
 */

.planner-root {
  /* Wong/Okabe-Ito 8-color zone palette tokens. Plan 04-03 consumes these
   * for zone fill colors. Locked here so the auto-router and the manifold
   * stub use the same source of truth. */
  --zone-1: #56B4E9;  /* Sky Blue */
  --zone-2: #009E73;  /* Bluish Green */
  --zone-3: #F0E442;  /* Yellow */
  --zone-4: #D55E00;  /* Vermillion */
  --zone-5: #CC79A7;  /* Reddish Purple */
  --zone-6: #0072B2;  /* Blue */
  --zone-7: #E69F00;  /* Orange */
  --zone-8: #2a2724;  /* Charcoal (Wong/Okabe-Ito's #000 swapped to site --text-strong) */

  --planner-grid-stroke: var(--border, #e8e3d3);
  --planner-canvas-bg: var(--bg, #fdfcf7);
  --planner-toolbar-bg: var(--bg-elevated, #f6f2e8);
  --planner-bom-bg: var(--bg-elevated, #f6f2e8);

  display: grid;
  /* Plan 05-02: right rail 240px → 280px to fit the live BOM panel
   * (tier toggle + lean rows + total + cart slot). 40px loss from canvas
   * region acceptable on 1024-1200px viewports per CONTEXT target. */
  grid-template-columns: 200px 1fr 280px;
  grid-template-areas: "toolbar canvas bom";
  gap: var(--space-2, 0.75rem);
  min-height: 600px;
  margin: var(--space-4, 1.5rem) 0;
}

.planner-toolbar {
  grid-area: toolbar;
  background: var(--planner-toolbar-bg);
  padding: var(--space-2, 0.75rem);
}

.planner-canvas-region {
  grid-area: canvas;
  background: var(--planner-canvas-bg);
  position: relative;
}

.planner-bom-region {
  grid-area: bom;
  background: var(--planner-bom-bg);
  padding: var(--space-2, 0.75rem);
}

.planner-canvas {
  display: block;
  width: 100%;
  height: auto;
  /* Concrete dimensions are set in JS via canvas.width/height + DPR scaling.
   * The CSS width: 100% lets the canvas fill its grid track; ResizeObserver
   * in modules/canvas.js handles the JS-side dimensions on layout changes. */
}

.planner-toolbar-title {
  font-size: var(--text-base, 1rem);
  margin: 0 0 var(--space-2, 0.75rem) 0;
}

.planner-save-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: var(--text-sm, 0.875rem);
  color: var(--text-muted, #6b6862);
}

.planner-save-indicator .dot {
  display: inline-block;
  width: 0.6em;
  height: 0.6em;
  border-radius: 50%;
  background: currentColor;
}

.planner-save-indicator[data-state="saving"] {
  opacity: 0.5;
}

.planner-save-indicator[data-state="unsaved"] {
  color: #B8421E;  /* site --accent (red-orange) for unsaved+error */
}

.planner-noscript {
  padding: var(--space-3, 1rem);
  background: var(--bg-elevated, #f6f2e8);
  border-left: 4px solid var(--accent, #B8421E);
}

.planner-root :focus-visible {
  outline: 2px solid var(--accent, #b8421e);
  outline-offset: 2px;
}

/* Mobile fallback rules — Plan 04-05 fills these in.
 * Stub now so the breakpoint is registered. */
@media (max-width: 899px) {
  .planner-root {
    grid-template-columns: 1fr;
    grid-template-areas: "canvas";
  }
  .planner-toolbar,
  .planner-bom-region {
    display: none;
  }
}

/* Dark-mode tokens. Site CSS already flips body bg in dark mode; the
 * planner palette stays the same (Wong/Okabe-Ito is luminance-balanced
 * for both schemes per RESEARCH.md §11). */
@media (prefers-color-scheme: dark) {
  .planner-root {
    --planner-grid-stroke: var(--border, #2e2a25);
  }
}

/* === Plan 04-03: router + manifold === */

.planner-reroute-button {
  background: transparent;
  border: 1px solid var(--border, #e8e3d3);
  border-radius: 4px;
  padding: 0.5rem 0.75rem;
  font-family: inherit;
  font-size: var(--text-sm, 0.875rem);
  color: var(--text-muted, #6b6862);
  cursor: pointer;
  width: 100%;
  margin-top: var(--space-2, 0.75rem);
  min-height: 36px;
}

.planner-reroute-button:hover {
  color: var(--text, #2a2724);
  border-color: var(--text-muted, #6b6862);
}

.planner-reroute-button:focus-visible {
  outline: 2px solid var(--accent, #b8421e);
  outline-offset: 2px;
}

/* Manifold bucket cursor hint — when hovering, indicate it's draggable.
 * planner.js sets data-manifold-hover on the canvas as the pointer enters
 * the bucket radius. */
.planner-canvas { cursor: default; }
.planner-canvas[data-manifold-hover="true"] { cursor: move; }

/* Manifold stub-stroke fallback (canvas-rendered, but provided here as a
 * design-token reference so future maintainers don't have to dig through
 * canvas.js's literals). Width hints map to ctx.lineWidth values used in
 * drawManifold:
 *   1/2" daisy stub  → 5px stroke (water-cyan #5BC0BE)
 *   1/4" zone stub   → 2.5px stroke (zone color)
 *   plugged stub     → 2px dashed stroke (ground gray #6B6862)
 */

/* === Plan 04-02: tools + popup + zones === */

.planner-section-heading {
  font-size: var(--text-sm, 0.875rem);
  font-weight: 600;
  margin: var(--space-3, 1rem) 0 var(--space-1, 0.5rem);
  color: var(--text-muted, #6b6862);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.planner-tools {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.planner-tool-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border: 1px solid var(--border, #e8e3d3);
  border-radius: 4px;
  padding: 0.5rem 0.75rem;
  font-family: inherit;
  font-size: var(--text-sm, 0.875rem);
  color: var(--text, #2a2724);
  cursor: pointer;
  text-align: left;
  min-height: 44px;   /* Apple HIG tap-target minimum */
}

.planner-tool-button:hover {
  background: var(--bg, #fdfcf7);
}

.planner-tool-button[aria-pressed="true"] {
  background: var(--accent, #b8421e);
  color: white;
  border-color: var(--accent, #b8421e);
}

.planner-tool-button kbd {
  font-family: var(--font-mono, ui-monospace, Menlo, monospace);
  font-size: 0.75rem;
  background: rgba(0, 0, 0, 0.08);
  padding: 1px 6px;
  border-radius: 3px;
  margin-left: 0.5rem;
  color: inherit;
}

.planner-tool-button[aria-pressed="true"] kbd {
  background: rgba(255, 255, 255, 0.2);
}

.planner-tool-button:focus-visible {
  outline: 2px solid var(--accent, #b8421e);
  outline-offset: 2px;
}

.planner-zones {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-2, 0.75rem);
}

.planner-zones li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0;
  font-size: var(--text-sm, 0.875rem);
}

.planner-zones .zone-empty {
  color: var(--text-muted, #6b6862);
  font-style: italic;
}

.zone-swatch {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  flex-shrink: 0;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.planner-add-zone {
  background: transparent;
  border: 1px dashed var(--border, #e8e3d3);
  border-radius: 4px;
  padding: 0.4rem 0.75rem;
  font-size: var(--text-sm, 0.875rem);
  color: var(--text-muted, #6b6862);
  cursor: pointer;
  width: 100%;
  min-height: 36px;
}

.planner-add-zone:hover {
  color: var(--text, #2a2724);
  border-color: var(--text-muted, #6b6862);
}

/* === Inline popup editor === */

.planner-popup-editor {
  background: var(--bg-elevated, #f6f2e8);
  border: 1px solid var(--border, #e8e3d3);
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  padding: var(--space-2, 0.75rem);
  width: 260px;
  z-index: 100;
  font-size: var(--text-sm, 0.875rem);
}

.planner-popup-editor .popup-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0.4rem 0;
}

.planner-popup-editor .popup-row > span {
  flex: 0 0 70px;
  color: var(--text-muted, #6b6862);
}

.planner-popup-editor input,
.planner-popup-editor select,
.planner-popup-editor textarea {
  flex: 1;
  background: var(--bg, #fdfcf7);
  border: 1px solid var(--border, #e8e3d3);
  border-radius: 3px;
  padding: 0.3rem 0.5rem;
  font-family: inherit;
  font-size: var(--text-sm, 0.875rem);
  color: var(--text, #2a2724);
  min-height: 32px;
  min-width: 0;   /* override flex-basis so number inputs shrink properly */
}

.planner-popup-editor textarea {
  resize: vertical;
  min-height: 50px;
}

.planner-popup-editor .popup-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: var(--space-2, 0.75rem);
}

.planner-popup-editor .popup-actions button {
  flex: 1;
  padding: 0.5rem;
  border: 1px solid var(--border, #e8e3d3);
  background: var(--bg, #fdfcf7);
  border-radius: 4px;
  font-size: var(--text-sm, 0.875rem);
  cursor: pointer;
  min-height: 36px;
}

.planner-popup-editor button[data-action="delete"] {
  border-color: var(--accent, #b8421e);
  color: var(--accent, #b8421e);
}

.planner-popup-editor button[data-action="delete"]:hover {
  background: var(--accent, #b8421e);
  color: white;
}

.planner-popup-editor :focus-visible {
  outline: 2px solid var(--accent, #b8421e);
  outline-offset: 1px;
}

/* === Plan 04-04: persistence + indicators === */

.planner-actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: var(--space-3, 1rem);
  padding-top: var(--space-2, 0.75rem);
  border-top: 1px solid var(--border, #e8e3d3);
}

.planner-reset,
.planner-export,
.planner-import-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border, #e8e3d3);
  border-radius: 4px;
  padding: 0.5rem 0.75rem;
  font-family: inherit;
  font-size: var(--text-sm, 0.875rem);
  color: var(--text, #2a2724);
  cursor: pointer;
  text-align: center;
  min-height: 36px;
}

.planner-reset:hover,
.planner-export:hover,
.planner-import-label:hover {
  background: var(--bg, #fdfcf7);
}

/* Reset two-state styling: idle uses neutral chrome; confirming flips to the
 * site accent (warm red-orange) so the second click reads as destructive.
 * The five-second timeout reverts back to idle automatically. */
.planner-reset[data-reset-state="confirming"] {
  background: var(--accent, #b8421e);
  color: white;
  border-color: var(--accent, #b8421e);
  font-weight: 600;
}

/* The label catches the click and forwards it to the hidden file input;
 * the inner span shouldn't intercept the click. */
.planner-import-label { cursor: pointer; }
.planner-import-label > span { pointer-events: none; }

/* Cross-tab banner: warm-FYI palette per Phase 2-03's stuck-sidebar
 * conventions. Sits inside .planner-canvas-region (which is
 * `position: relative`) absolutely positioned at the top so it overlays
 * the canvas without disrupting the grid. */
.planner-cross-tab-banner {
  position: absolute;
  top: 8px;
  left: 8px;
  right: 8px;
  background: #f3edda;
  border: 1px solid #c9a86b;
  border-left: 4px solid #c9a86b;
  border-radius: 4px;
  padding: 0.5rem 0.75rem;
  display: flex;
  gap: 0.5rem;
  align-items: center;
  z-index: 50;
  font-size: var(--text-sm, 0.875rem);
}

.planner-cross-tab-banner button {
  background: transparent;
  border: 1px solid #c9a86b;
  border-radius: 3px;
  padding: 0.25rem 0.5rem;
  cursor: pointer;
  font-family: inherit;
  font-size: var(--text-xs, 0.75rem);
}

/* First-time-empty hint: centered overlay inside the canvas region. The
 * paragraph is pointer-events: none (inherits from parent) so it doesn't
 * block clicks meant for the canvas; the button explicitly re-enables
 * pointer events so it stays clickable. */
.planner-first-time-hint {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  pointer-events: none;
  text-align: center;
  color: var(--text-muted, #6b6862);
  font-size: var(--text-base, 1rem);
}

.planner-first-time-hint p {
  margin: 0;
  max-width: 320px;
}

.planner-first-time-hint button {
  pointer-events: auto;
  background: var(--accent, #b8421e);
  color: white;
  border: none;
  border-radius: 4px;
  padding: 0.5rem 1rem;
  font-family: inherit;
  cursor: pointer;
  min-height: 36px;
}

@media (prefers-color-scheme: dark) {
  .planner-cross-tab-banner {
    background: #2a241a;
    border-color: #6b5630;
    color: #e0d6c0;
  }
}

/* === Plan 04-05: a11y + mobile fallback + help === */
/*
 * Containers list table: parallel non-canvas DOM view for keyboard-only +
 * screen-reader users. Default-collapsed <details> below the canvas region.
 * Per-cell inputs commit() through the same path as canvas edits.
 */

.planner-containers-list {
  margin-top: var(--space-4, 1.5rem);
  border-top: 1px solid var(--border, #e8e3d3);
  padding-top: var(--space-3, 1rem);
  grid-column: 1 / -1; /* span all three columns of the planner-root grid */
}
.planner-containers-list summary {
  cursor: pointer;
  font-weight: 600;
  font-size: var(--text-base, 1rem);
  padding: 0.5rem 0;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.planner-containers-list summary:hover { color: var(--accent, #b8421e); }
.containers-table-wrapper { overflow-x: auto; }
.planner-containers-list table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm, 0.875rem);
  margin-top: var(--space-2, 0.75rem);
}
.planner-containers-list th,
.planner-containers-list td {
  padding: 0.5rem;
  border-bottom: 1px solid var(--border, #e8e3d3);
  text-align: left;
  vertical-align: middle;
}
.planner-containers-list th {
  font-weight: 600;
  color: var(--text-muted, #6b6862);
  font-size: var(--text-xs, 0.75rem);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.planner-containers-list input,
.planner-containers-list select {
  width: 100%;
  background: var(--bg, #fdfcf7);
  border: 1px solid var(--border, #e8e3d3);
  border-radius: 3px;
  padding: 0.3rem 0.5rem;
  font-family: inherit;
  font-size: var(--text-sm, 0.875rem);
  color: var(--text, #2a2724);
  min-height: 32px;
}
.planner-containers-list input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.planner-containers-list td button {
  background: transparent;
  border: 1px solid var(--border, #e8e3d3);
  border-radius: 3px;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  font-family: inherit;
  font-size: var(--text-xs, 0.75rem);
  margin-right: 0.25rem;
  min-height: 32px;
}
.planner-containers-list td button[data-action="delete"] {
  border-color: var(--accent, #b8421e);
  color: var(--accent, #b8421e);
}
.planner-add-container {
  margin-top: var(--space-2, 0.75rem);
  background: transparent;
  border: 1px dashed var(--border, #e8e3d3);
  border-radius: 4px;
  padding: 0.5rem 1rem;
  font-family: inherit;
  font-size: var(--text-sm, 0.875rem);
  color: var(--text-muted, #6b6862);
  cursor: pointer;
  min-height: 44px;
}

/* Mobile fallback (<900px): the desktop @media block in this file already
 * stacks the three-region grid; the JS short-circuits canvas init and
 * renders a preset chooser shell instead. These rules style the chooser. */

.planner-mobile-fallback {
  padding: var(--space-3, 1rem);
}
.planner-mobile-notice {
  background: var(--bg-elevated, #f6f2e8);
  border-left: 4px solid var(--accent, #b8421e);
  padding: 0.75rem 1rem;
  border-radius: 4px;
  margin-bottom: var(--space-3, 1rem);
  font-size: var(--text-sm, 0.875rem);
  color: var(--text, #2a2724);
}
.planner-preset-chooser {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2, 0.75rem);
}
.planner-preset-card {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-elevated, #f6f2e8);
  border: 1px solid var(--border, #e8e3d3);
  border-radius: 6px;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  min-height: 44px;
  color: var(--text, #2a2724);
}
.planner-preset-card:hover,
.planner-preset-card:focus-visible {
  border-color: var(--accent, #b8421e);
}
.preset-name { font-weight: 600; font-size: var(--text-base, 1rem); }
.preset-stats { font-size: var(--text-sm, 0.875rem); color: var(--text-muted, #6b6862); }
.planner-preset-output {
  margin-top: var(--space-3, 1rem);
  padding: var(--space-2, 0.75rem);
  background: var(--bg-elevated, #f6f2e8);
  border-radius: 4px;
}
.planner-preset-output ul.preset-zones {
  list-style: none;
  padding: 0;
  margin: 0;
}
.planner-preset-output li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0;
}
.planner-preset-output .zone-swatch {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
}
.preset-cart-placeholder {
  margin-top: var(--space-2, 0.75rem);
  font-size: var(--text-sm, 0.875rem);
  color: var(--text-muted, #6b6862);
}

/* Help section: collapsible <details> below canvas + table. The whole block
 * wraps in planner.md (not JS-rendered). Default-open; planner.js
 * applyHelpSkillState() flips the open attribute on skill 'advanced'. */

.planner-help-section {
  margin-top: var(--space-5, 2rem);
  padding: var(--space-3, 1rem);
  background: var(--bg-elevated, #f6f2e8);
  border-radius: 6px;
  border: 1px solid var(--border, #e8e3d3);
}
.planner-help-section summary {
  cursor: pointer;
  font-weight: 600;
  font-size: var(--text-base, 1rem);
  padding: 0.25rem 0;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.planner-help-section h3 {
  font-size: var(--text-base, 1rem);
  margin: var(--space-3, 1rem) 0 0.5rem;
}
.planner-help-section ul,
.planner-help-section ol { padding-left: 1.5rem; }
.planner-help-section li {
  margin: 0.25rem 0;
  font-size: var(--text-sm, 0.875rem);
}

@media (prefers-color-scheme: dark) {
  .planner-mobile-notice { background: #2e2a25; }
  .planner-preset-card { background: #2e2a25; }
  .planner-preset-output { background: #2e2a25; }
  .planner-help-section { background: #2e2a25; }
}

/* === Plan 05-02: BOM panel UI === */

/* Right-rail panel inner layout — vertical stack: tier toggle, scrollable
 * rows, bold-dollar total, cart-slot. The grid track itself is widened to
 * 280px in the .planner-root rule above. */
.planner-bom-region {
  display: flex;
  flex-direction: column;
  gap: var(--space-2, 0.75rem);
  padding: var(--space-2, 0.75rem);
  overflow: hidden;
  min-height: 0;          /* allow inner overflow to scroll, not push grid */
}

.planner-bom-region .planner-bom-header { flex: 0 0 auto; }
.planner-bom-region .planner-bom-rows-host {
  flex: 1 1 auto;
  overflow-y: auto;
  min-height: 0;
}
.planner-bom-region .planner-bom-total { flex: 0 0 auto; }
.planner-bom-region .planner-bom-cart-slot { flex: 0 0 auto; }

/* Tier-toggle pill (3 buttons, single-select via aria-pressed) */
.planner-bom-tier-toggle {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--border, #e8e3d3);
  border-radius: 6px;
  overflow: hidden;
}
.planner-bom-tier-button {
  background: transparent;
  border: 0;
  border-right: 1px solid var(--border, #e8e3d3);
  padding: 0.5rem 0.25rem;
  font-family: inherit;
  font-size: var(--text-sm, 0.875rem);
  color: var(--text-muted, #6b6862);
  cursor: pointer;
  min-height: 36px;
}
.planner-bom-tier-button:last-child { border-right: 0; }
.planner-bom-tier-button:hover {
  background: var(--bg, #fdfcf7);
  color: var(--text, #2a2724);
}
.planner-bom-tier-button[aria-pressed="true"] {
  background: var(--accent, #b8421e);
  color: #fdfcf7;
  font-weight: 600;
}
.planner-bom-tier-button:focus-visible {
  outline: 2px solid var(--accent, #b8421e);
  outline-offset: -2px;
}

/* Loading + empty states */
.planner-bom-loading,
.planner-bom-empty {
  font-style: italic;
  color: var(--text-muted, #6b6862);
  font-size: var(--text-sm, 0.875rem);
  margin: var(--space-2, 0.75rem) 0;
}

/* Category headings inside the rows scroll region */
.planner-bom-category {
  font-size: var(--text-sm, 0.875rem);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted, #6b6862);
  margin: var(--space-2, 0.75rem) 0 0.25rem;
  font-weight: 600;
}
.planner-bom-rows > .planner-bom-category:first-child { margin-top: 0; }

/* Lean per-row layout: label / qty / packs / cost */
.planner-bom-row {
  border-bottom: 1px solid var(--border, #e8e3d3);
  padding: 0.4rem 0;
}
.planner-bom-row:last-child { border-bottom: 0; }
.planner-bom-row-summary {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 0.5rem;
  font-size: var(--text-sm, 0.875rem);
}
.planner-bom-row-label {
  grid-column: 1 / -1;
  font-weight: 500;
  color: var(--text, #2a2724);
}

/* Inline TBD — search Amazon badge per CONTEXT §TBD substitutions inline */
.planner-bom-tbd-badge {
  display: inline-block;
  font-size: 0.7rem;
  padding: 0.05rem 0.4rem;
  border-radius: 3px;
  background: var(--accent, #b8421e);
  color: #fdfcf7;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-left: 0.4rem;
  vertical-align: 1px;
  font-weight: 600;
  text-decoration: none;
}
a.planner-bom-tbd-badge:hover {
  text-decoration: underline;
  filter: brightness(1.1);
}

/* USER_SUPPLIED rows — quiet visual that explains why their cost line is $0 */
.planner-bom-user-supplied-badge {
  display: inline-block;
  font-size: 0.65rem;
  padding: 0.05rem 0.35rem;
  border-radius: 3px;
  background: var(--bg-elevated, #f6f2e8);
  border: 1px solid var(--border, #e8e3d3);
  color: var(--text-muted, #6b6862);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-left: 0.4rem;
  vertical-align: 1px;
  font-weight: 600;
}

.planner-bom-row-qty,
.planner-bom-row-packs {
  grid-column: 1;
  color: var(--text-muted, #6b6862);
  font-size: 0.8rem;
}
.planner-bom-row-cost {
  grid-column: 2;
  grid-row: 2 / span 2;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--text, #2a2724);
}

/* Expandable per-row detail (<details> accordion — locked by Plan 05-02) */
.planner-bom-row-detail {
  margin-top: 0.25rem;
}
.planner-bom-row-detail > summary {
  font-size: 0.7rem;
  color: var(--text-muted, #6b6862);
  cursor: pointer;
  list-style: none;
  padding: 0.1rem 0;
  min-height: 22px;
}
.planner-bom-row-detail > summary::-webkit-details-marker { display: none; }
.planner-bom-row-detail > summary::before { content: "+ "; }
.planner-bom-row-detail[open] > summary::before { content: "− "; }
.planner-bom-row-detail-body {
  padding: 0.25rem 0 0.25rem 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted, #6b6862);
}
.planner-bom-row-detail-body img {
  max-width: 100%;
  height: auto;
  border-radius: 3px;
  margin-bottom: 0.25rem;
}
.planner-bom-row-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 0.25rem;
}
.planner-bom-tier-badge {
  display: inline-block;
  font-size: 0.65rem;
  padding: 0.05rem 0.3rem;
  border-radius: 3px;
  background: var(--bg-elevated, #f6f2e8);
  color: var(--text-muted, #6b6862);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.planner-bom-tier-badge.tier-core {
  background: var(--accent, #b8421e);
  color: #fdfcf7;
}
.planner-bom-tier-badge.tier-recommended {
  background: #5BC0BE;
  color: #1a1816;
}
.planner-bom-tier-badge.tier-optional {
  background: var(--bg-elevated, #f6f2e8);
  color: var(--text-muted, #6b6862);
}
.planner-bom-asin {
  font-family: ui-monospace, monospace;
  font-size: 0.7rem;
  color: var(--text-muted, #6b6862);
}
.planner-bom-row-why { margin: 0; font-style: italic; }
.planner-bom-row-novice { margin-top: 0.25rem; }
.planner-bom-row-novice > summary {
  font-size: 0.7rem;
  cursor: pointer;
  color: var(--text-muted, #6b6862);
  min-height: 22px;
}

/* Bold-dollar total at the bottom (CONTEXT §BOM panel UI: 'single bold
 * dollar figure'). */
.planner-bom-total {
  margin: 0;
  padding: var(--space-2, 0.75rem) 0 0;
  border-top: 1px solid var(--border, #e8e3d3);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text, #2a2724);
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.planner-bom-total[data-state="empty"] {
  color: var(--text-muted, #6b6862);
  font-weight: 500;
}

/* Cart slot — Plan 05-03 fills this in. Reserved here so the panel layout
 * doesn't reflow when the cart button mounts. */
.planner-bom-cart-slot {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding-top: var(--space-2, 0.75rem);
  min-height: 80px;          /* placeholder height; Plan 05-03 fills */
}

/* === Pure-CSS tier filtering === */
/* Container's data-active-tier decides which row tiers are visible. No JS
 * row-rebuild on tier change — just flip the data attribute on the host. */
.planner-bom-rows-host[data-active-tier="core"] .planner-bom-row[data-tier="recommended"],
.planner-bom-rows-host[data-active-tier="core"] .planner-bom-row[data-tier="optional"],
.planner-bom-rows-host[data-active-tier="core+rec"] .planner-bom-row[data-tier="optional"],
.planner-bom-rows[data-active-tier="core"] .planner-bom-row[data-tier="recommended"],
.planner-bom-rows[data-active-tier="core"] .planner-bom-row[data-tier="optional"],
.planner-bom-rows[data-active-tier="core+rec"] .planner-bom-row[data-tier="optional"] {
  display: none;
}

/* Dark-mode flips */
@media (prefers-color-scheme: dark) {
  .planner-bom-tier-button {
    color: var(--text-muted, #a09a8d);
    border-right-color: var(--border, #2e2a25);
  }
  .planner-bom-tier-button:hover {
    background: var(--bg-elevated, #2a2724);
    color: var(--text, #fdfcf7);
  }
  .planner-bom-row { border-bottom-color: var(--border, #2e2a25); }
  .planner-bom-tier-badge { background: var(--bg-elevated, #2a2724); }
  .planner-bom-user-supplied-badge {
    background: var(--bg-elevated, #2a2724);
    border-color: var(--border, #2e2a25);
  }
}

/* === Plan 05-02: end BOM panel UI === */

/* === Plan 05-03: cart engine === */
/*
 * Cart-button + clipboard-copy button styling. Mounted by cart.js
 * mountCartButton() into .planner-bom-cart-slot (the slot itself is created
 * by Plan 05-02). Per CONTEXT.md the clipboard button is always-visible
 * alongside the cart button — the multi-tab fallback is best-effort on
 * Safari/iOS, so the clipboard is the GUARANTEED safety net (RESEARCH §6).
 */

.planner-cart-button,
.planner-cart-copy {
  font-family: inherit;
  font-size: var(--text-sm, 0.875rem);
  border: 1px solid var(--border, #e8e3d3);
  border-radius: 6px;
  padding: 0.55rem 0.75rem;
  cursor: pointer;
  min-height: 40px;
  text-align: center;
  width: 100%;
  margin-top: 0.5rem;
  transition: background 120ms ease, color 120ms ease;
}

/* Primary cart button — accent fill for visual weight. */
.planner-cart-button {
  background: var(--accent, #b8421e);
  border-color: var(--accent, #b8421e);
  color: #fdfcf7;
  font-weight: 600;
}
.planner-cart-button:hover {
  filter: brightness(1.05);
}
.planner-cart-button:active {
  filter: brightness(0.95);
}

/* Secondary clipboard button — outlined, equal visibility per CONTEXT
 * "always visible" rule (clipboard is the safety net per RESEARCH §6). */
.planner-cart-copy {
  background: transparent;
  color: var(--text, #2a2724);
}
.planner-cart-copy:hover {
  background: var(--bg-elevated, #f6f2e8);
  border-color: var(--text-muted, #6b6862);
}

/* Copy state flips — driven by data-state on the .planner-cart-copy button.
 * cart.js mountCartButton sets dataset.state to 'idle' / 'copying' /
 * 'copied' / 'error' over the course of the click → clipboard write →
 * 1.5s revert lifecycle. */
.planner-cart-copy[data-state="copying"] { opacity: 0.6; cursor: wait; }
.planner-cart-copy[data-state="copied"] {
  background: #5BC0BE;            /* water-cyan, signals success */
  color: #1a1816;
  border-color: #5BC0BE;
}
.planner-cart-copy[data-state="error"] {
  background: var(--accent, #b8421e);
  color: #fdfcf7;
  border-color: var(--accent, #b8421e);
}

/* Hidden state for empty-cart case — cart.js sets `hidden` attribute when
 * getRows() returns no eligible rows. The HTML `hidden` attribute is
 * sufficient on its own; this rule is documentation. */
.planner-cart-button[hidden],
.planner-cart-copy[hidden] { display: none; }

@media (prefers-color-scheme: dark) {
  .planner-cart-copy {
    color: var(--text, #fdfcf7);
  }
  .planner-cart-copy:hover {
    background: var(--bg-elevated, #2a2724);
  }
}

/* === Plan 05-03: end === */

/* === Plan 05-05: mobile preset cart wiring === */
/*
 * Mobile-fallback (<900px) per-preset BOM panel. Each preset card's output
 * panel gets a vertical-stack region with: tier toggle, summary line,
 * cart-slot (hosting Plan 05-03's mountCartButton). Per-preset tier choice
 * is closure-state in planner.js's _perPresetTier — independent per card.
 *
 * Reuses Plan 05-02's .planner-bom-tier-toggle widget styling and Plan
 * 05-03's .planner-cart-button + .planner-cart-copy styling. This section
 * adds only the per-preset wrapper layout + mobile-tap-target tweaks.
 */

.planner-preset-bom {
  margin-top: var(--space-2, 0.75rem);
  padding-top: var(--space-2, 0.75rem);
  border-top: 1px solid var(--border, #e8e3d3);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.planner-preset-bom-toggle {
  /* Inherits from .planner-bom-tier-toggle — Plan 05-02's pill is reused.
   * Width fills the parent on mobile (single-column layout). */
}

.planner-preset-bom-summary {
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text, #2a2724);
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.planner-preset-bom-cart-slot {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  /* On narrow viewports (<600px), stack cart-button + copy-button vertically.
   * Plan 05-03's .planner-cart-button + .planner-cart-copy already apply
   * width: 100%, so they fill the slot regardless. */
}

/* Mobile-specific tweak: tier toggle buttons get bigger for thumb-tap targets */
@media (max-width: 899px) {
  .planner-preset-bom-toggle .planner-bom-tier-button {
    min-height: 44px;
    font-size: 1rem;
  }
}

@media (prefers-color-scheme: dark) {
  .planner-preset-bom {
    border-top-color: var(--border, #2e2a25);
  }
  .planner-preset-bom-summary {
    color: var(--text, #fdfcf7);
  }
}

/* === Plan 05-05: end === */

/* === Page 02 embedded-planner overrides (Phase 6a / Plan 06a-01) ============
   When the planner mounts inside a build-guide article (root has
   data-planner-embedded="true"), shrink it gracefully so the BOM rail
   collapses below the canvas in narrow article columns. Standalone planner
   page (no attribute) is unaffected. */
.planner-root[data-planner-embedded="true"] {
  margin: var(--space-6, 2.25rem) 0;
  max-width: 52rem;
  min-height: 480px;
}

@media (max-width: 1099px) {
  .planner-root[data-planner-embedded="true"] {
    grid-template-columns: 1fr;
    grid-template-areas:
      "toolbar"
      "canvas"
      "bom";
  }
}
/* === Plan 06a-01: end === */