/* Search Widget — compact, sticky, works on index + checkpoint pages */

.search-widget-wrapper {
  position: sticky;
  top: var(--hero-h);
  z-index: 50;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 0.5rem 1rem;
  margin-bottom: 0;
}

.search-widget {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.search-widget__input-group {
  flex: 1;
  min-width: 120px;
}

.search-input {
  width: 100%;
  padding: 0.375rem 0.5rem;
  border: 2px solid var(--color-border);
  border-radius: 4px;
  font: inherit;
  font-size: 0.875rem;
  background: var(--color-bg);
  color: var(--color-text);
}

.search-input:focus {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-color: var(--color-focus);
}

/* Level filter buttons */
.search-level-filters {
  display: flex;
  gap: 0.25rem;
  flex-shrink: 0;
}

.search-level-btn {
  padding: 0.5rem 0.75rem;
  border: 2px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-surface);
  color: var(--color-text-muted);
  font: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: none;
  line-height: 1.2;
}

/* Both active (show all) — subtle accent border */
.search-level-btn.active {
  border-color: var(--color-accent);
  color: var(--color-text);
}

/* Exclusively selected — filled accent */
.search-level-btn.selected {
  background: var(--color-accent);
  color: #1e293b;
  border-color: var(--color-accent);
}

.search-level-btn:hover {
  border-color: var(--color-accent);
}

.search-level-btn:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

/* Search results */
.search-results {
  margin-top: 0.5rem;
  max-height: 300px;
  overflow-y: auto;
}

.search-results__count {
  font-weight: 500;
  margin: 0 0 0.25rem;
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

.search-results__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.search-result-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.25rem;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.875rem;
}

.search-result-link:hover {
  background: rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] .search-result-link:hover {
  background: rgba(255, 255, 255, 0.06);
}

.search-result-link:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: -1px;
  position: relative;
  z-index: 1;
}

.search-result-code {
  font-weight: 700;
  font-family: var(--font-family-mono);
  color: var(--color-accent);
  white-space: nowrap;
  min-width: 2.5rem;
  font-size: 0.8125rem;
}

.search-result-title {
  flex: 1;
  min-width: 0;
}

.search-result-level {
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 0.0625rem 0.375rem;
  border-radius: 3px;
  white-space: nowrap;
  flex-shrink: 0;
}

.search-result-level--a {
  background: #e8f5e9;
  color: #2e7d32;
}

.search-result-level--aa {
  background: #e3f2fd;
  color: #1565c0;
}

[data-theme="dark"] .search-result-level--a {
  background: #1b5e20;
  color: #a5d6a7;
}

[data-theme="dark"] .search-result-level--aa {
  background: #0d47a1;
  color: #90caf9;
}

.search-result-level--aaa {
  background: #fff3e0;
  color: #e65100;
}

[data-theme="dark"] .search-result-level--aaa {
  background: #bf360c;
  color: #ffcc80;
}

.search-results__empty {
  padding: 0.5rem 0.25rem;
  color: var(--color-text-muted);
  font-style: italic;
  font-size: 0.875rem;
}

/* Visually hidden */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Mobile */
@media (max-width: 768px) {
  .search-widget-wrapper {
    padding: 0.375rem 0.75rem;
  }

  .search-widget {
    flex-direction: column;
    gap: var(--space-3);
  }

  .search-widget__input-group {
    flex: 1 1 100%;
    min-width: auto;
    width: 100%;
  }

  .search-input {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    font-size: 1rem; /* Prevent iOS auto-zoom */
  }

  .search-level-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    width: 100%;
  }

  .search-level-btn {
    flex: 0 1 auto; /* Allow buttons to wrap */
    padding: var(--space-2);
    font-size: 0.9rem;
  }

  .search-results {
    max-height: 300px;
    overflow-y: auto;
  }
}