/* ============================================================
   Anchor Scratch & Dent Viewer — Dark Theme
   ============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg:        #1a1a2e;
  --header-bg: #16213e;
  --accent:    #e94560;
  --border:    #0f3460;
  --surface:   #1e2a45;
  --surface2:  #253350;
  --text:      #e0e0e0;
  --text-muted:#8a9bb5;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  min-height: 100vh;
}

/* ── Header ── */
.site-header {
  background: var(--header-bg);
  border-bottom: 2px solid var(--border);
  padding: 0.85rem 1.5rem;
}

.site-header h1 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #fff;
}

/* ── Main content ── */
main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem 3rem;
}

/* ── Search panel ── */
.search-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
}

.search-form {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.field-group label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.field-group select,
.field-group input[type="date"] {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.42rem 0.65rem;
  font-family: var(--font);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.15s;
  min-width: 140px;
}

.field-group select:focus,
.field-group input[type="date"]:focus {
  border-color: var(--accent);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.44rem 1.1rem;
  border: none;
  border-radius: 5px;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, background 0.15s;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  align-self: flex-end;
}

.btn-primary:not(:disabled):hover {
  background: #c73250;
}

.btn-accent {
  background: var(--accent);
  color: #fff;
}

.btn-accent:not(:disabled):hover {
  background: #c73250;
}

.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:not(:disabled):hover {
  background: #2e3f62;
}

/* ── Toolbar ── */
.toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0;
  margin-bottom: 0.75rem;
}

.selection-count {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-right: auto;
}

/* ── Results grid ── */
.results {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

/* ── Thumbnail card ── */
.thumb {
  position: relative;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.1s;
  aspect-ratio: 16 / 9;
}

.thumb:hover {
  border-color: var(--text-muted);
  transform: translateY(-1px);
}

.thumb.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: opacity 0.15s;
}

/* Timestamp overlay */
.thumb-timestamp {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.3rem 0.5rem;
  font-size: 0.7rem;
  color: #fff;
  background: linear-gradient(transparent, rgba(0,0,0,0.75));
  pointer-events: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Fallback indicator */
.thumb-fallback {
  position: absolute;
  top: 0.35rem;
  right: 0.35rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  pointer-events: none;
}

/* Checkbox */
.thumb-checkbox {
  position: absolute;
  top: 0.4rem;
  left: 0.4rem;
  width: 17px;
  height: 17px;
  cursor: pointer;
  accent-color: var(--accent);
  z-index: 2;
}

/* ── Load More ── */
.load-more-wrap {
  display: flex;
  justify-content: center;
  padding: 1.5rem 0 0.5rem;
}

/* ── Lightbox ── */
.lightbox-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 12, 22, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.lightbox-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  max-width: 95vw;
  max-height: 95vh;
}

.lightbox-img {
  max-width: 95vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 6px;
  display: block;
  background: #000;
}

.lightbox-info {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
  letter-spacing: 0.03em;
}

.lightbox-close {
  position: fixed;
  top: 1rem;
  right: 1.25rem;
  background: none;
  border: none;
  color: #fff;
  font-size: 2.2rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.75;
  transition: opacity 0.15s;
  z-index: 1001;
}

.lightbox-close:hover { opacity: 1; }

.lightbox-prev,
.lightbox-next {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(15, 52, 96, 0.7);
  border: 1px solid var(--border);
  color: #fff;
  font-size: 2rem;
  line-height: 1;
  padding: 0.5rem 0.75rem;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.15s;
  z-index: 1001;
}

.lightbox-prev { left: 0.75rem; }
.lightbox-next { right: 0.75rem; }

.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(233, 69, 96, 0.75);
}

/* ── Utility ── */
[hidden] { display: none !important; }

/* ── Responsive ── */
@media (max-width: 600px) {
  .search-form { flex-direction: column; }
  .field-group select,
  .field-group input[type="date"] { min-width: unset; width: 100%; }
  .btn-primary { width: 100%; justify-content: center; }
}