/* ============================================================
   css/theme-picker.css — the theme-selection control in the nav.

   Each menu item carries its own `data-theme` attribute, so the
   tokens from themes.css resolve *inside that item* — the swatch
   row and the tile background are therefore a live preview of the
   theme with no JavaScript colour maths at all.
   ============================================================ */

.theme-picker {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  font: inherit;
  cursor: pointer;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--hairline, rgb(255 255 255 / 18%));
  border-radius: 999px;
  padding: 0.35em 0.85em;
  transition:
    color 0.2s,
    border-color 0.2s,
    background 0.2s;
}

.theme-toggle:hover,
.theme-toggle:focus-visible,
.theme-toggle[aria-expanded='true'] {
  color: var(--text);
  border-color: var(--accent);
  background: color-mix(in oklab, var(--color-brand) 10%, transparent);
  outline: none;
}

.theme-toggle .theme-swatch {
  width: 0.85em;
  height: 0.85em;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-brand), var(--color-accent-2));
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--color-text) 25%, transparent);
}

.theme-toggle .arrow {
  display: inline-block;
  font-size: 0.7em;
  transition: transform 0.2s ease;
}

.theme-toggle[aria-expanded='true'] .arrow {
  transform: rotate(180deg);
}

/* ── Popover ────────────────────────────────────────────────── */

.theme-menu {
  position: absolute;
  top: calc(100% + 0.6rem);
  right: 0;
  z-index: 1200;
  width: min(26rem, calc(100vw - 2rem));
  max-height: min(70vh, 32rem);
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
  padding: 0.85rem;
  border: 1px solid var(--hairline, rgb(255 255 255 / 12%));
  border-radius: 14px;
  background: var(--surface-glass-strong, rgb(22 27 34 / 92%));
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  box-shadow: var(--drop, 0 24px 60px -18px rgb(0 0 0 / 60%));
}

.theme-menu[hidden] {
  display: none;
}

.theme-menu-title {
  grid-column: 1 / -1;
  margin: 0 0 0.1rem;
  font-family: var(--font-mono, monospace);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.theme-menu-hint {
  grid-column: 1 / -1;
  margin: 0.35rem 0 0;
  font-size: 0.72rem;
  line-height: 1.5;
  color: var(--text-muted);
  opacity: 0.8;
}

/* ── Option tiles (self-previewing) ─────────────────────────── */

.theme-option {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.45rem;
  padding: 0.55rem 0.6rem;
  font: inherit;
  text-align: left;
  cursor: pointer;
  border-radius: 10px;
  /* Resolved against the option's own data-theme. */
  color: var(--color-text);
  background: var(--color-canvas);
  border: 1px solid var(--color-border);
  transition:
    transform 0.15s ease,
    box-shadow 0.2s ease;
}

.theme-option:hover,
.theme-option:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 10px 22px -12px rgb(0 0 0 / 70%);
  outline: none;
}

.theme-option[aria-checked='true'] {
  box-shadow: 0 0 0 2px var(--color-brand);
}

.theme-option.is-auto {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}

.theme-option-name {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.theme-option-note {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

.theme-swatches {
  display: flex;
  gap: 0.25rem;
}

.theme-dot {
  width: 15px;
  height: 10px;
  border-radius: 3px;
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--color-text) 18%, transparent);
}

.theme-dot-1 {
  background: var(--color-brand);
}
.theme-dot-2 {
  background: var(--color-accent-2);
}
.theme-dot-3 {
  background: var(--color-success);
}
.theme-dot-4 {
  background: var(--color-highlight);
}
.theme-dot-5 {
  background: var(--color-surface-2);
}

/* ── Responsive ─────────────────────────────────────────────── */

@media (max-width: 720px) {
  .theme-toggle .theme-toggle-label {
    display: none;
  }

  .theme-menu {
    position: fixed;
    top: 60px;
    right: 0.75rem;
    left: 0.75rem;
    width: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .theme-toggle,
  .theme-toggle .arrow,
  .theme-option {
    transition: none;
  }
}