/* =============================================
   Pages — Materials listing, search, filters,
   profile settings modals
   ============================================= */

/* ── Materials page ── */
.materials-filters {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-md);
  margin: 0 var(--content-padding) var(--space-lg);
  border-radius: var(--radius-lg);
}

.filter-group {
  display: flex;
  gap: var(--space-sm);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: var(--space-xs);
}

.filter-group::-webkit-scrollbar {
  display: none;
}

.filter-btn {
  flex-shrink: 0;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-strong);
  cursor: pointer;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.filter-btn:hover {
  background: var(--color-primary-bg);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-btn.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-box i,
.search-box svg {
  position: absolute;
  left: 14px;
  width: 16px;
  height: 16px;
  color: var(--color-text-tertiary);
  pointer-events: none;
  z-index: 1;
  flex-shrink: 0;
}

.search-box input {
  width: 100%;
  min-height: 44px;
  padding: 10px var(--space-md) 10px 40px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  transition: border-color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast);
}

.search-box input:focus {
  background: var(--color-surface-solid);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-focus-ring);
  outline: 0;
}

.search-box:focus-within i,
.search-box:focus-within svg {
  color: var(--color-primary);
}

.materials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-md);
  padding: 0 var(--content-padding);
}

.material-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base),
    box-shadow var(--transition-base);
}

.material-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.material-card__thumb {
  position: relative;
  width: 100%;
  height: 140px;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    var(--color-primary-bg),
    var(--color-secondary-bg)
  );
  display: flex;
  align-items: center;
  justify-content: center;
}

.material-card__thumb.no-thumb {
  height: 80px;
  background: linear-gradient(
    135deg,
    var(--color-primary-bg) 0%,
    rgba(var(--color-primary-rgb, 59, 130, 246), 0.08) 100%
  );
}

.material-card__thumb.no-thumb svg {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
  opacity: 0.35;
}

.material-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.material-card__badge {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  background: var(--color-glass);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
  color: var(--color-text);
}

.material-card__badge.pinned {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

.material-card__body {
  padding: var(--space-md);
  flex: 1;
}

.material-card__type {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--space-xs);
}

.material-card__title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  margin: 0 0 var(--space-xs);
  line-height: var(--line-height-tight);
}

.material-card__summary {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.material-card__footer {
  padding: 0 var(--space-md) var(--space-md);
}

.materials-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-3xl) var(--space-lg);
  text-align: center;
  color: var(--color-text-tertiary);
}

.materials-empty i {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
  opacity: 0.4;
}

.materials-empty p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ── Profile settings modals ── */
.settings-modal-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md) 0;
}

.settings-modal-label {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  margin: 0;
}

.settings-modal-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: var(--space-xs) 0 0;
}

.tz-list {
  display: flex;
  flex-direction: column;
  max-height: 50vh;
  overflow-y: auto;
  margin: 0 calc(-1 * var(--space-lg));
  padding: 0 var(--space-lg);
}

.tz-option {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-sm);
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.tz-option:last-child {
  border-bottom: none;
}

.tz-option:active {
  background: rgba(0, 0, 0, 0.03);
}

.tz-option input[type="radio"] {
  display: none;
}

.tz-option-label {
  flex: 1;
  font-size: var(--font-size-base);
}

.tz-option-active {
  background: var(--color-primary-bg);
}

.tz-option-active .tz-option-label {
  font-weight: var(--font-weight-medium);
  color: var(--color-primary-dark);
}

.tz-check {
  color: var(--color-primary);
  flex-shrink: 0;
}