/* ── Theme Switcher ──────────────────────────────────────────────────── */

.theme-switcher {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-modal);
}

/* ── Trigger button ──────────────────────────────────────────────────── */

.theme-switcher__trigger {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  flex-shrink: 0;
}

.theme-switcher__trigger:hover {
  background: var(--color-surface-3);
  color: var(--color-text);
  box-shadow: var(--shadow-lg);
  transform: scale(1.08);
}

.theme-switcher__trigger:active {
  transform: scale(0.95);
}

.theme-switcher__trigger:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.theme-switcher__trigger svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* ── Panel ───────────────────────────────────────────────────────────── */

.theme-switcher__panel {
  position: absolute;
  bottom: calc(48px + var(--space-3));
  right: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  box-shadow: var(--shadow-lg);
  min-width: 220px;

  /* Hidden state */
  opacity: 0;
  transform: translateY(8px) scale(0.97);
  pointer-events: none;
  transition:
    opacity var(--transition-base),
    transform var(--transition-base);
  transform-origin: bottom right;
}

.theme-switcher__panel--open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

.theme-switcher__panel-title {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-3);
  padding: 0 var(--space-2);
}

/* ── Theme list ──────────────────────────────────────────────────────── */

.theme-switcher__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.theme-swatch {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  background: none;
  border: 1px solid transparent;
  cursor: pointer;
  text-align: left;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast);
  color: var(--color-text-muted);
}

.theme-swatch:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.theme-swatch--active {
  background: var(--color-surface-2);
  border-color: var(--color-accent);
  color: var(--color-text);
}

.theme-swatch:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Colour preview dots */
.theme-swatch__dots {
  display: flex;
  gap: 3px;
  flex-shrink: 0;
}

.theme-swatch__dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.theme-swatch__name {
  font-size: var(--text-sm);
  font-weight: 500;
  flex: 1;
}

/* Checkmark for active theme */
.theme-swatch__check {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
  fill: currentColor;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.theme-swatch--active .theme-swatch__check {
  opacity: 1;
}