/* ============================================================
   settings.css — Settings App (System Preferences)
   macOS Desktop Website
   ============================================================ */

/* ── Layout ────────────────────────────────────────────────── */
.settings-layout {
  display: flex;
  height: 100%;
  overflow: hidden;
}

/* ── Sidebar ───────────────────────────────────────────────── */
.settings-sidebar {
  width: 200px;
  flex-shrink: 0;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border-primary);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.settings-sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 8px 6px;
}

.settings-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  border: none;
  background: transparent;
  text-align: left;
  transition: background 0.1s ease;
  min-height: 36px;
}

.settings-nav-item:hover {
  background: var(--sidebar-hover);
}

.settings-nav-item.active {
  background: var(--sidebar-active);
  font-weight: 600;
}

.settings-nav-icon {
  font-size: 16px;
  flex-shrink: 0;
  width: 22px;
  text-align: center;
}

/* ── Panel Area ────────────────────────────────────────────── */
.settings-panels {
  flex: 1;
  overflow-y: auto;
  background: var(--surface-primary);
}

.settings-panel {
  display: none;
  padding: 24px 28px 32px;
}

.settings-panel.active {
  display: block;
}

.settings-panel-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.settings-section {
  margin-bottom: 24px;
}

.settings-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

/* ── Theme Picker ──────────────────────────────────────────── */
.settings-theme-picker {
  display: flex;
  gap: 16px;
}

.settings-theme-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
}

.settings-theme-preview {
  width: 120px;
  height: 78px;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid transparent;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  display: grid;
  grid-template-columns: 30% 1fr;
  grid-template-rows: 14px 1fr;
  transition: border-color 0.15s ease;
}

.settings-theme-option.active .settings-theme-preview {
  border-color: var(--accent);
}

.settings-theme-option:hover:not(.active) .settings-theme-preview {
  border-color: var(--text-quaternary);
}

/* Light preview */
.settings-theme-preview-light {
  background: #f5f5f5;
}
.settings-theme-preview-light .stp-titlebar {
  grid-column: 1 / -1;
  background: #e8e8e8;
}
.settings-theme-preview-light .stp-sidebar {
  background: #ebebeb;
}
.settings-theme-preview-light .stp-content {
  background: #fff;
}

/* Dark preview */
.settings-theme-preview-dark {
  background: #1c1c1e;
}
.settings-theme-preview-dark .stp-titlebar {
  grid-column: 1 / -1;
  background: #2c2c2e;
}
.settings-theme-preview-dark .stp-sidebar {
  background: #252528;
}
.settings-theme-preview-dark .stp-content {
  background: #1c1c1e;
}

/* Auto preview — split diagonally */
.settings-theme-preview-auto {
  background: linear-gradient(135deg, #f5f5f5 50%, #1c1c1e 50%);
}
.settings-theme-preview-auto .stp-titlebar {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, #e8e8e8 50%, #2c2c2e 50%);
}
.settings-theme-preview-auto .stp-sidebar {
  background: linear-gradient(180deg, #ebebeb 50%, #252528 50%);
}
.settings-theme-preview-auto .stp-content {
  background: linear-gradient(135deg, #fff 50%, #1c1c1e 50%);
}

.settings-theme-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.settings-theme-option.active .settings-theme-label {
  color: var(--accent);
  font-weight: 600;
}

/* ── Accent Colour Picker ──────────────────────────────────── */
.settings-accent-picker {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.settings-accent-swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid transparent;
  background: var(--swatch);
  cursor: pointer;
  padding: 0;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
  position: relative;
}

.settings-accent-swatch:hover {
  transform: scale(1.15);
}

.settings-accent-swatch.active {
  box-shadow: 0 0 0 2px var(--surface-primary), 0 0 0 4px var(--swatch);
}

.settings-accent-swatch.active::after {
  content: '✓';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

/* ── Wallpaper Grid ────────────────────────────────────────── */
.settings-wallpaper-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.settings-wallpaper-thumb {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
}

.swt-preview {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 6px;
  border: 2px solid transparent;
  transition: border-color 0.15s ease;
}

.settings-wallpaper-thumb.active .swt-preview {
  border-color: var(--accent);
}

.settings-wallpaper-thumb:hover:not(.active) .swt-preview {
  border-color: var(--text-quaternary);
}

.swt-label {
  font-size: 11px;
  color: var(--text-secondary);
}

.settings-wallpaper-thumb.active .swt-label {
  color: var(--accent);
  font-weight: 600;
}

/* Wallpaper previews */
.swt-default {
  background: linear-gradient(135deg, #0b1e3d, #1a4a8a, #2a5298);
}

.swt-sunset {
  background: linear-gradient(135deg, #2d1b69, #c84e3a, #f5a623);
}

.swt-aurora {
  background: linear-gradient(135deg, #0a2a1b, #1a8a5a, #4af5c8, #1a4a8a);
}

.swt-midnight {
  background: linear-gradient(135deg, #0a0a14, #1a1a2e, #2d2d44);
}

/* ── Toggle Switch ─────────────────────────────────────────── */
.settings-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-secondary);
}

.settings-toggle-row:last-child {
  border-bottom: none;
}

.settings-toggle-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.settings-toggle-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

.settings-toggle-desc {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* macOS-style toggle switch */
.settings-switch {
  position: relative;
  width: 40px;
  height: 24px;
  flex-shrink: 0;
  cursor: pointer;
}

.settings-switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.settings-switch-track {
  position: absolute;
  inset: 0;
  background: var(--surface-tertiary);
  border-radius: 12px;
  transition: background 0.2s ease;
}

.settings-switch-track::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  transition: transform 0.2s ease;
}

.settings-switch input:checked + .settings-switch-track {
  background: var(--accent);
}

.settings-switch input:checked + .settings-switch-track::after {
  transform: translateX(16px);
}

.settings-switch input:focus-visible + .settings-switch-track {
  box-shadow: 0 0 0 3px rgba(0,122,255,0.3);
}

/* ── Danger Button ─────────────────────────────────────────── */
.settings-danger-btn {
  padding: 8px 16px;
  border-radius: 6px;
  border: 1px solid var(--color-error);
  background: transparent;
  color: var(--color-error);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  min-height: 36px;
  transition: background 0.15s ease, color 0.15s ease;
}

.settings-danger-btn:hover {
  background: var(--color-error);
  color: #fff;
}

.settings-hint {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 8px;
}

/* ── About Panel ───────────────────────────────────────────── */
.settings-about-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 20px 0 0;
}

.settings-about-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  overflow: hidden;
  margin-bottom: 12px;
}

.settings-about-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.settings-about-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.settings-about-version {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 6px;
}

.settings-about-tagline {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  letter-spacing: 0.01em;
}

.settings-about-divider {
  width: 100%;
  max-width: 360px;
  height: 1px;
  background: var(--border-secondary);
  margin: 20px 0 16px;
}

.settings-about-section-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  margin-bottom: 8px;
  width: 100%;
  max-width: 360px;
  text-align: left;
}

.settings-about-specs {
  width: 100%;
  max-width: 360px;
  text-align: left;
}

.settings-spec-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-secondary);
  font-size: 13px;
}

.settings-spec-row:last-child {
  border-bottom: none;
}

.settings-spec-label {
  color: var(--text-tertiary);
  font-weight: 500;
}

.settings-spec-value {
  color: var(--text-primary);
}

/* ── Scrollbar ─────────────────────────────────────────────── */
.settings-panels::-webkit-scrollbar,
.settings-sidebar-scroll::-webkit-scrollbar {
  width: 8px;
}

.settings-panels::-webkit-scrollbar-track,
.settings-sidebar-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.settings-panels::-webkit-scrollbar-thumb,
.settings-sidebar-scroll::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 4px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

.settings-panels::-webkit-scrollbar-thumb:hover,
.settings-sidebar-scroll::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
  background-clip: padding-box;
  border: 2px solid transparent;
}

/* ── Reduced Motion ────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .settings-accent-swatch,
  .settings-switch-track,
  .settings-switch-track::after {
    transition: none;
  }
}