/* ===== Custom Properties ===== */
:root {
  --bg: #0e0e0e;
  --bg-surface: #1a1a1a;
  --bg-hover: #242424;
  --text: #e8e8e8;
  --text-muted: #999;
  --accent: #c9a84c;
  --border: #2a2a2a;
  --shadow: rgba(0, 0, 0, 0.4);
  --radius: 8px;
  --transition: 0.25s ease;
  --max-width: 1400px;
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body.lightbox-open {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--accent);
  transition: opacity var(--transition);
  flex-shrink: 0;
}

.brand:hover {
  opacity: 0.85;
}

.brand-icon {
  flex-shrink: 0;
  stroke: var(--accent);
}

.header-search {
  flex: 1;
  max-width: 400px;
}

#search-input {
  width: 100%;
  padding: 0.5rem 0.875rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition);
}

#search-input:focus {
  border-color: var(--accent);
}

#search-input::placeholder {
  color: var(--text-muted);
}

/* ===== Search Results ===== */
#search-results {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.search-section {
  margin-bottom: 2.5rem;
}

.search-section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.search-no-results {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
}

.search-photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.75rem;
}

.search-photo-thumb {
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.search-photo-thumb:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow);
}

.search-photo-thumb img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
}

.search-photo-caption {
  padding: 0.4rem 0.6rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===== Main Content ===== */
#app {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* ===== Homepage Gallery Grid ===== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.gallery-tile {
  display: block;
  background: var(--bg-surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.gallery-tile:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--shadow);
}

.gallery-tile-img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  background: var(--bg);
}

.gallery-tile-info {
  padding: 1rem 1.25rem;
}

.gallery-tile-name {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.gallery-tile-date {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.5rem;
}

.tag-pill {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  background: rgba(201, 168, 76, 0.12);
  color: #e8e8e8;
  border: 1px solid rgba(201, 168, 76, 0.45);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  text-decoration: none;
}

.tag-pill:hover {
  background: rgba(201, 168, 76, 0.22);
  border-color: rgba(201, 168, 76, 0.7);
}

.lightbox-caption {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  justify-content: center;
}

/* ===== Gallery Detail ===== */
.gallery-header {
  margin-bottom: 2rem;
}

.gallery-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  transition: opacity var(--transition);
}

.gallery-back:hover {
  opacity: 0.75;
}

.gallery-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.gallery-date {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.gallery-meta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.gallery-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.filter-pill.active {
  background: rgba(201, 168, 76, 0.35);
  border-color: rgba(201, 168, 76, 0.85);
  color: #c9a84c;
}

.gallery-description {
  margin-top: 0.75rem;
  color: var(--text-muted);
  max-width: 60ch;
}

/* ===== Masonry Layout ===== */
.masonry {
  columns: 4;
  column-gap: 1rem;
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 1rem;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  position: relative;
}

.masonry-item img {
  width: 100%;
  display: block;
  transition: transform var(--transition), filter var(--transition);
  background: var(--bg-surface);
}

.masonry-item:hover img {
  transform: scale(1.03);
  filter: brightness(1.1);
}

/* ===== Lightbox ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

.lightbox[hidden] {
  display: none;
}

.lightbox-img-container {
  flex: 1;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 3rem 3rem 1rem;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 100%;
  object-fit: contain;
  border-radius: 2px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.lightbox-img.loaded {
  opacity: 1;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  z-index: 1010;
  transition: opacity var(--transition), background var(--transition);
  opacity: 0.7;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.1);
}

.lightbox-close {
  top: 1rem;
  right: 1rem;
  font-size: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-prev,
.lightbox-next {
  top: 50%;
  transform: translateY(-50%);
  font-size: 3rem;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-prev {
  left: 1rem;
}

.lightbox-next {
  right: 1rem;
}

.lightbox-footer .tag-list {
  margin-top: 0;
}

.lightbox-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  flex-wrap: wrap;
  min-height: 3rem;
  flex-shrink: 0;
}

.lightbox-download {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 0.8rem;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity var(--transition), background var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.lightbox-download:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.45);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== Loading State ===== */
.loading {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .masonry {
    columns: 3;
  }
}

@media (max-width: 599px) {
  .masonry {
    columns: 2;
    column-gap: 0.5rem;
  }

  .masonry-item {
    margin-bottom: 0.5rem;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-title {
    font-size: 1.5rem;
  }

  .lightbox-prev,
  .lightbox-next {
    width: 48px;
    height: 48px;
    font-size: 2rem;
  }

  .lightbox-img-container {
    padding: 1rem 1rem 0.5rem;
  }

  #app {
    padding: 1.5rem 1rem;
  }
}