/* ==========================================================================
   Option Rows — CoachOS Design System
   Individual selectable cards stacked with a small gap. Each row is a
   self-contained bordered card. Used by SINGLE_CHOICE (radio) and
   MULTIPLE_CHOICE (checkbox). Visual language matches .ds-matrix__cell:
   white bg at rest, --surface-hover on hover, --accent-subtle bg + accent
   border on select. The card shape (border + radius + gap) distinguishes
   option rows from matrix cells which share borders inside a container.

   Structure:
     .ds-option-row                   — radio/checkbox row (use on <label>)
       .ds-option-row__input          — visually-hidden native input
       .ds-option-row__indicator      — radio circle / checkbox square
       .ds-option-row__content        — label + description column
       .ds-option-row__meta           — trailing pill (score badge / count)

   Variants:
     .ds-option-row--checkbox         — square indicator + checkmark glyph
     .ds-option-row--readonly         — non-interactive aggregation; cursor
                                        not-allowed, no hover effects, picked
                                        rows keep accent + saturated meta pill
   ========================================================================== */

.ds-option-row {
  /* position: relative is REQUIRED. It anchors the visually-hidden
     .ds-option-row__input below so the label-click focus event does not
     trigger a document-level scroll-into-view. Removing it makes the page
     jump hundreds of pixels on every option click. See DS Conventions →
     "Visually-hidden form inputs" at /a/design-system/contribute. */
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--surface-base);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition:
    background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
  min-width: 0;
}

.ds-option-row + .ds-option-row {
  margin-top: var(--space-2);
}

.ds-option-row:hover {
  background-color: var(--surface-hover);
  border-color: var(--border-strong);
}

/* Visually-hidden native input — the label is the hit area */
.ds-option-row__input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Custom indicator (circle for radio, square rounded for checkbox) */
.ds-option-row__indicator {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-full);
  background-color: var(--surface-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition:
    border-color var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out);
}

.ds-option-row__indicator::after {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background-color: var(--accent-primary);
  transform: scale(0);
  transition: transform var(--duration-fast) var(--ease-spring);
}

/* Checkbox variant — square rounded indicator with a checkmark glyph on select */
.ds-option-row--checkbox .ds-option-row__indicator {
  border-radius: var(--radius-sm);
}
.ds-option-row--checkbox .ds-option-row__indicator::after {
  content: "";
  width: 10px;
  height: 5px;
  border: 2px solid var(--text-on-accent, #fff);
  border-top: 0;
  border-right: 0;
  border-radius: 0;
  background: transparent;
  transform: rotate(-45deg) translate(1px, -1px) scale(0);
  transform-origin: center;
}

/* ── Content ───────────────────────────────────────────────────────────── */

.ds-option-row__content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ds-option-row__label {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.35;
}

.ds-option-row__description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Trailing meta (score badge, count, etc.) */
.ds-option-row__meta {
  flex-shrink: 0;
  align-self: center;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-secondary);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  background-color: var(--surface-sunken);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* ── States ────────────────────────────────────────────────────────────── */

.ds-option-row:hover .ds-option-row__indicator {
  border-color: var(--accent-primary);
}

/* Focus ring — shown when the hidden input is focused via keyboard */
.ds-option-row:has(.ds-option-row__input:focus-visible) {
  outline: 2px solid var(--border-focus, var(--accent-primary));
  outline-offset: 2px;
}

/* Selected — accent-subtle bg + accent border. The discrete card border
   takes the accent color directly (vs .ds-matrix__cell which uses an inset
   shadow because cells share borders inside their container). */
.ds-option-row:has(.ds-option-row__input:checked) {
  background-color: var(--accent-subtle);
  border-color: var(--accent-primary);
}

.ds-option-row:has(.ds-option-row__input:checked) .ds-option-row__indicator {
  border-color: var(--accent-primary);
  background-color: var(--accent-subtle);
}

.ds-option-row:has(.ds-option-row__input:checked) .ds-option-row__indicator::after {
  transform: scale(1);
}

.ds-option-row--checkbox:has(.ds-option-row__input:checked) .ds-option-row__indicator {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}
.ds-option-row--checkbox:has(.ds-option-row__input:checked) .ds-option-row__indicator::after {
  transform: rotate(-45deg) translate(1px, -1px) scale(1);
}

/* Selected meta — muted accent treatment for the score badge. */
.ds-option-row:has(.ds-option-row__input:checked) .ds-option-row__meta {
  background-color: var(--accent-muted);
  color: var(--accent-primary);
}

/* ── Read-only variant — answer aggregation ────────────────────────────────
   Per-row modifier (consumer applies to every row in the aggregation).
   Non-interactive only: cursor not-allowed, no hover effects (collapse to
   resting). Picked rows keep the selected accent treatment + a saturated
   count pill so response counts carry visual weight against unpicked rows.
   Unpicked rows stay white (matching the interactive resting state) —
   same convention as .ds-matrix--rubric.--readonly. */
.ds-option-row--readonly {
  cursor: not-allowed;
}

/* No hover effects — collapse hover to resting. */
.ds-option-row--readonly:hover {
  background-color: var(--surface-base);
  border-color: var(--border-default);
}
.ds-option-row--readonly:hover .ds-option-row__indicator {
  border-color: var(--border-strong);
}

/* Picked rows — lock hover to the picked state. */
.ds-option-row--readonly:has(.ds-option-row__input:checked):hover {
  background-color: var(--accent-subtle);
  border-color: var(--accent-primary);
}

/* Saturated count pill on picked rows. */
.ds-option-row--readonly:has(.ds-option-row__input:checked) .ds-option-row__meta {
  background-color: var(--accent-primary);
  color: var(--text-on-accent);
}

/* ==========================================================================
   Color Gallery — CoachOS Design System
   Grid of tinted tiles, one per open-response aggregation item.
   Colors cycle through a curated DS palette. Two tone modes:
   --light (soft tint, dark text) and --bright (saturated, white text).
   ========================================================================== */

.ds-color-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-2);
}

.ds-color-gallery__tile {
  --ds-tile-color: var(--accent-primary);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  line-height: 1.45;
  min-height: 56px;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  overflow-wrap: anywhere;
  word-break: break-word;
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.ds-color-gallery__tile:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.ds-color-gallery__body {
  font-size: var(--text-sm);
  line-height: 1.45;
}

.ds-color-gallery__meta {
  font-size: var(--text-xs);
  opacity: 0.75;
  margin-top: auto;
}

/* Light mode — soft tint, dark text (default) */
.ds-color-gallery--light .ds-color-gallery__tile {
  background-color: color-mix(in srgb, var(--ds-tile-color) 18%, transparent);
  color: var(--text-primary);
  border: 1px solid color-mix(in srgb, var(--ds-tile-color) 30%, transparent);
}

/* Bright mode — saturated background, high-contrast text */
.ds-color-gallery--bright .ds-color-gallery__tile {
  background-color: var(--ds-tile-color);
  color: var(--text-on-accent, #fff);
}

/* Dense variant — tighter tiles for PDF parity and compact composites */
.ds-color-gallery--dense {
  gap: var(--space-1);
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
}
.ds-color-gallery--dense .ds-color-gallery__tile {
  padding: var(--space-2) var(--space-3);
  min-height: 40px;
  font-size: var(--text-xs);
}