/* Phase 1 elevation — Search overlay (Cmd/Ctrl + K)
 *
 * Implements Site UI Elevation §6 "The Search Experience". Globally
 * available command-palette-style overlay that summons a beautiful
 * full-screen search from anywhere on the site. Hits the existing
 * /api/v1/search/autocomplete and /api/v1/search/discovery endpoints —
 * does NOT replace the dedicated /search page (that remains the deep
 * results destination).
 *
 * Surface treatment is the cinema overlay (dark navy, gold accents)
 * because the spec describes it as "considered, intelligent" rather
 * than the cream editorial pages.
 */

/* Trigger pill — small persistent search affordance for site nav */
.bt-search-trigger {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: rgba(250, 248, 245, 0.06);
  border: 1px solid rgba(196, 160, 82, 0.25);
  border-radius: var(--radius-full);
  color: var(--text-mid);
  font-family: var(--font-ui-sans);
  font-size: var(--size-sm);
  letter-spacing: var(--tracking-wide);
  cursor: pointer;
  transition: var(--transition-fast);
  min-width: 220px;
}

.bt-search-trigger:hover {
  border-color: var(--gold);
  color: var(--text);
  background: rgba(250, 248, 245, 0.1);
}

.bt-search-trigger__icon {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.bt-search-trigger__text {
  flex: 1;
  text-align: left;
}

.bt-search-trigger__hint {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 2px var(--space-xs);
  background: rgba(196, 160, 82, 0.12);
  border: 1px solid rgba(196, 160, 82, 0.25);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--gold-pale);
  text-transform: uppercase;
}

/* ────────────────────────────────────────────────────────────────────────
 * Overlay surface
 * ──────────────────────────────────────────────────────────────────────── */

.bt-search-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: var(--surface-overlay);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: clamp(var(--space-2xl), 12vh, var(--space-4xl)) var(--space-md) var(--space-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-out);
  overflow-y: auto;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.bt-search-overlay--open {
  opacity: 1;
  pointer-events: auto;
}

.bt-search-overlay__panel {
  width: 100%;
  max-width: 720px;
  background: transparent;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  transform: translateY(-12px);
  opacity: 0;
  transition: transform var(--duration-slow) var(--ease-editorial),
              opacity var(--duration-slow) var(--ease-editorial);
}

.bt-search-overlay--open .bt-search-overlay__panel {
  transform: translateY(0);
  opacity: 1;
}

/* Search input — large, considered, italic placeholder */
.bt-search-overlay__input-wrap {
  position: relative;
  display: flex;
  align-items: center;
  background: rgba(250, 248, 245, 0.06);
  border: 1px solid rgba(196, 160, 82, 0.3);
  border-radius: var(--radius-md);
  padding: 0 var(--space-md);
  transition: border-color var(--duration-base) var(--ease-out);
}

.bt-search-overlay__input-wrap:focus-within {
  border-color: var(--gold);
  background: rgba(250, 248, 245, 0.08);
}

.bt-search-overlay__icon {
  width: 18px;
  height: 18px;
  color: var(--gold);
  flex-shrink: 0;
}

.bt-search-overlay__input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: var(--space-md) var(--space-md);
  font-family: var(--font-display);
  font-style: italic;
  font-weight: var(--weight-regular);
  font-size: clamp(var(--size-lg), 3vw, var(--size-xl));
  color: var(--cream);
  letter-spacing: var(--tracking-tight);
  line-height: 1.3;
}

.bt-search-overlay__input::placeholder {
  color: rgba(250, 248, 245, 0.45);
  font-style: italic;
}

.bt-search-overlay__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: none;
  border: 1px solid rgba(250, 248, 245, 0.2);
  border-radius: var(--radius-full);
  color: var(--text-mid);
  cursor: pointer;
  flex-shrink: 0;
  font-size: 14px;
  transition: var(--transition-fast);
  font-family: var(--font-ui-sans);
}

.bt-search-overlay__close:hover {
  background: rgba(250, 248, 245, 0.1);
  color: var(--cream);
}

.bt-search-overlay__hint {
  margin-left: var(--space-sm);
  font-family: var(--font-ui-sans);
  font-size: var(--size-xs);
  color: var(--text-dim);
  letter-spacing: var(--tracking-wide);
}

/* Section headers */
.bt-search-overlay__section-title {
  font-family: var(--font-ui-sans);
  font-weight: var(--weight-medium);
  font-size: var(--size-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 var(--space-md);
}

.bt-search-overlay__section + .bt-search-overlay__section {
  margin-top: var(--space-xl);
}

/* Suggestion / result list */
.bt-search-overlay__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.bt-search-overlay__item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-ui-sans);
  font-size: var(--size-base);
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: left;
}

.bt-search-overlay__item:hover,
.bt-search-overlay__item:focus,
.bt-search-overlay__item.is-active {
  background: rgba(196, 160, 82, 0.08);
  border-color: rgba(196, 160, 82, 0.3);
  color: var(--cream);
  outline: none;
}

.bt-search-overlay__item-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(196, 160, 82, 0.1);
  color: var(--gold);
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--size-md);
  font-weight: var(--weight-medium);
}

.bt-search-overlay__item-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.bt-search-overlay__item-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--size-md);
  color: var(--cream);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bt-search-overlay__item-meta {
  font-family: var(--font-ui-sans);
  font-size: var(--size-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-dim);
}

.bt-search-overlay__item-type {
  flex-shrink: 0;
  font-family: var(--font-ui-sans);
  font-size: var(--size-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--gold-pale);
  opacity: 0.7;
}

/* Empty / loading / error states */
.bt-search-overlay__status {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--size-md);
  color: var(--text-dim);
  text-align: center;
  padding: var(--space-xl) 0;
}

.bt-search-overlay__view-all {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  padding: var(--space-xs) var(--space-md);
  font-family: var(--font-ui-sans);
  font-size: var(--size-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--gold);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: none;
  position: relative;
}

.bt-search-overlay__view-all::after {
  content: '→';
  transition: transform var(--duration-fast) var(--ease-out);
}

.bt-search-overlay__view-all:hover::after {
  transform: translateX(4px);
}

/* Body lock when overlay open (set by JS) */
body.bt-search-open {
  overflow: hidden;
}

/* Mobile — tighter padding, full-width panel */
@media (max-width: 768px) {
  .bt-search-overlay {
    padding: var(--space-lg) var(--space-md);
  }

  .bt-search-overlay__input {
    font-size: var(--size-lg);
  }

  .bt-search-overlay__hint {
    display: none;
  }

  .bt-search-trigger {
    min-width: auto;
  }

  .bt-search-trigger__text {
    display: none;
  }
}