/* ============================================================
   Settings drawer — ANTROP §18.
   R160: smooth slide-in 300ms, SOLID background, all sections
   visible at once, esc/backdrop/X close.
   R162: every option must visibly change the page.
   ============================================================ */

.drawer {
  position: fixed; inset: 0;
  z-index: var(--z-modal);
  pointer-events: none;
}
.drawer.is-open { pointer-events: auto; }

.drawer__backdrop {
  position: absolute; inset: 0;
  background: var(--overlay);
  backdrop-filter: blur(2px);
  opacity: 0;
  transition: opacity var(--motion-slow) var(--ease-emphasized);
}
.drawer.is-open .drawer__backdrop { opacity: 1; }

.drawer__panel {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 380px;
  max-width: 100vw;
  background: var(--bg-popover); /* SOLID per R74 */
  border-left: 1px solid var(--border-base);
  box-shadow: var(--shadow-modal);
  transform: translateX(100%);
  transition: transform 300ms var(--ease-emphasized);
  display: flex;
  flex-direction: column;
}
.drawer.is-open .drawer__panel { transform: translateX(0); }

.drawer__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5);
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}
.drawer__title {
  font: 700 var(--ts-h3) / 1.2 var(--font-display);
  color: var(--text-heading);
  letter-spacing: -0.3px;
}
.drawer__close {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  background: transparent;
  border: 0;
  color: var(--icon-default);
  border-radius: var(--radius-md);
  cursor: pointer;
}
.drawer__close:hover { background: var(--bg-hover); }
.drawer__close svg { width: 16px; height: 16px; }

.drawer__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.drawer__footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  flex-shrink: 0;
}

@media (max-width: 640px) {
  /* Bottom sheet on mobile (MR17/MR18 spirit) */
  .drawer__panel {
    top: auto;
    bottom: 0;
    right: 0;
    left: 0;
    width: 100vw;
    height: 90dvh;
    border-left: 0;
    border-top: 1px solid var(--border-base);
    border-radius: var(--radius-3xl) var(--radius-3xl) 0 0;
    transform: translateY(100%);
  }
  .drawer.is-open .drawer__panel { transform: translateY(0); }
}

/* ===== Settings sections ===== */
.set-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.set-section__label {
  font: 600 var(--ts-tag) / 1 var(--font-ui);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text-muted);
}
.set-section__hint {
  font: 400 var(--ts-caption) / 1.4 var(--font-ui);
  color: var(--text-muted);
}

/* Segmented control */
.seg {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 2px;
  padding: 2px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-base);
}
.seg__btn {
  height: 32px;
  padding: 0 10px;
  font: 500 var(--ts-body-sm) / 1 var(--font-ui);
  color: var(--text-secondary);
  background: transparent;
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--motion-fast) var(--ease-standard),
              color var(--motion-fast) var(--ease-standard);
  white-space: nowrap;
  text-align: center;
}
.seg__btn:hover { color: var(--text-primary); background: var(--bg-hover); }
.seg__btn.is-active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: 0 1px 2px rgba(0,0,0,0.08);
}

/* Accent palette */
.palette {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--space-2);
}
.palette__swatch {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--border-base);
  background: var(--swatch);
  transition: transform var(--motion-fast) var(--ease-standard),
              border-color var(--motion-fast) var(--ease-standard);
}
.palette__swatch[data-accent="monochrome"] {
  background:
    linear-gradient(135deg,
      var(--bg-primary) 0%, var(--bg-primary) 50%,
      var(--text-primary) 50%, var(--text-primary) 100%);
}
.palette__swatch:hover { transform: scale(1.08); }
.palette__swatch.is-active {
  border-color: var(--text-primary);
  box-shadow: 0 0 0 2px var(--bg-popover), 0 0 0 4px var(--accent);
}

/* Drag-reorder list (nav order) */
.dragsort {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-base);
  padding: 4px;
}
.dragsort__item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 8px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-base);
  font-size: var(--ts-body-sm);
  cursor: grab;
  user-select: none;
}
.dragsort__item:active { cursor: grabbing; }
.dragsort__item.is-dragging { opacity: 0.5; }
.dragsort__handle { color: var(--icon-muted); width: 14px; height: 14px; flex-shrink: 0; }
.dragsort__icon { color: var(--icon-default); width: 16px; height: 16px; flex-shrink: 0; }
.dragsort__label { flex: 1; color: var(--text-primary); }

/* ===== Density preview row inside settings ===== */
.density-preview {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-base);
  padding: 8px;
}
.density-preview__row {
  height: var(--row-h);
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  display: flex; align-items: center;
  padding: 0 10px;
  font-size: var(--ts-caption);
  color: var(--text-secondary);
}