/* ── IronFrame — main stylesheet ── */

:root {
  --if-accent:   #f59e0b;   /* amber */
  --if-accent2:  #d97706;
  --if-dark:     #0d0d0d;
  --if-card-bg:  #161616;
  --if-border:   rgba(255,255,255,0.08);
}

/* Base */
body {
  background-color: var(--if-dark);
  color: #e5e5e5;
}

/* ── Navbar ── */
#main-nav {
  background-color: rgba(13,13,13,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--if-border);
}

.navbar-brand {
  color: var(--if-accent) !important;
  font-weight: 700;
  letter-spacing: -.5px;
  font-size: 1.25rem;
}

.search-input {
  background-color: #1a1a1a;
  border-color: var(--if-border);
  color: #e5e5e5;
  min-width: 200px;
}
.search-input:focus {
  background-color: #1f1f1f;
  border-color: var(--if-accent);
  box-shadow: 0 0 0 2px rgba(245,158,11,.2);
  color: #fff;
}

/* ── Hero ── */
.hero-banner {
  background: linear-gradient(160deg, #0d0d0d 0%, #1a1025 50%, #0d0d12 100%);
  border-bottom: 1px solid var(--if-border);
}

/* ── Section labels ── */
.section-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #666;
}

/* ── Collection cards ── */
.collection-card {
  background-color: var(--if-card-bg);
  border: 1px solid var(--if-border);
  border-radius: 8px;
  overflow: hidden;
  transition: border-color .2s, transform .2s;
}
.collection-card:hover {
  border-color: var(--if-accent);
  transform: translateY(-2px);
}

.collection-cover {
  height: 110px;
  background-size: cover;
  background-position: center;
}
.collection-cover--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #1a1a1a;
}

/* ── Masonry grid ── */
.masonry {
  columns: 4;
  column-gap: 12px;
}
@media (max-width: 1200px) { .masonry { columns: 3; } }
@media (max-width: 768px)  { .masonry { columns: 2; } }
@media (max-width: 480px)  { .masonry { columns: 1; } }

.masonry-item {
  break-inside: avoid;
  margin-bottom: 12px;
}

/* ── Image cards (masonry) ── */
.img-card {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--if-border);
  background-color: var(--if-card-bg);
  transition: transform .2s, box-shadow .2s;
}
.img-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(245,158,11,.15);
}
.img-card img {
  width: 100%;
  height: auto;
  display: block;
}

/* ── Image cards (grid, fixed ratio) ── */
.img-card-grid {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--if-border);
  background-color: var(--if-card-bg);
  aspect-ratio: 4/3;
  transition: transform .2s, box-shadow .2s;
}
.img-card-grid:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(245,158,11,.15);
}
.img-card-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ── Image cards (related, square) ── */
.img-card-related {
  position: relative;
  overflow: hidden;
  border-radius: 6px;
  border: 1px solid var(--if-border);
  background-color: var(--if-card-bg);
  aspect-ratio: 1/1;
  transition: transform .2s;
}
.img-card-related:hover { transform: translateY(-2px); }
.img-card-related img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ── Hover overlay on cards ── */
.img-card-overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,.8));
  padding: .75rem .75rem .6rem;
  opacity: 0;
  transition: opacity .2s;
}
.img-card:hover .img-card-overlay,
.img-card-grid:hover .img-card-overlay {
  opacity: 1;
}
.img-card-title {
  font-size: .8rem;
  font-weight: 600;
  color: #fff;
  margin: 0;
  line-height: 1.3;
}
.img-card-sub {
  font-size: .72rem;
  color: var(--if-accent);
  margin: .15rem 0 0;
}

/* ── Image detail viewer ── */
.image-viewer {
  background-color: #000;
  text-align: center;
  max-height: 80vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.image-viewer img {
  max-height: 80vh;
  max-width: 100%;
  object-fit: contain;
}

/* ── Collection header ── */
.collection-header {
  border-bottom: 1px solid var(--if-border);
  padding-bottom: 1rem;
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--if-border);
  background-color: var(--if-dark);
}

/* ── Utility ── */
.text-accent { color: var(--if-accent); }