/* css/lego.css -- LEGO Models browser (/lego).
 * Renders Darkvale's BrickLink Studio .io models in-browser via three.js
 * LDrawLoader. All colors come from the project theme (--kb-* tokens); Geist is
 * inherited from the shell. Consumes data/lego/ (self-contained .ldr + thumbs +
 * renders + index.json). Mirrors css/models.css structure, slimmed for LEGO. */

/* ---------------- page layout lock ----------------
 * Pin the page to the dynamic viewport so the 3D stage always fits and the
 * directory scrolls internally (same rationale as css/models.css). */
html.h-100, body.h-100 {
  height: 100vh !important;
  height: 100dvh !important;
  min-height: 0 !important;
}
body { overflow: hidden; }

/* ---------------- directory ---------------- */
.directory { padding: 1.25rem; overflow-y: auto; min-height: 0; }

/* Hero: prominent Darkvale credit (per requirement). */
.lego-hero {
  max-width: 1320px;
  margin: 0 auto 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
}
.lego-hero-title {
  font-size: 1.35rem;
  font-weight: 750;
  line-height: 1;
  color: var(--kb-text-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.lego-hero-title .bi { color: var(--kb-primary); }
.lego-credit {
  font-size: 0.9rem;
  color: var(--kb-text-secondary);
}
.lego-credit-link {
  color: var(--kb-primary);
  font-weight: 650;
  text-decoration: none;
  border-bottom: 1px dotted color-mix(in srgb, var(--kb-primary) 55%, transparent);
}
.lego-credit-link:hover { text-decoration: underline; }
.directory-hint {
  max-width: 1320px;
  margin: 0 auto 0.75rem;
  color: var(--kb-text-secondary);
  font-size: 0.82rem;
}

/* toolbar */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
  max-width: 1320px;
  margin: 0 auto 0.5rem;
}
.search {
  flex: 1 1 240px;
  min-width: 200px;
  font: inherit;
  font-size: 0.9rem;
  color: var(--kb-text-primary);
  background: var(--kb-bg-input);
  border: 1px solid var(--kb-border-default);
  border-radius: 8px;
  padding: 0.45rem 0.7rem;
}
.search:focus { outline: none; border-color: var(--kb-primary); }
.chips { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.filter-chip {
  font: inherit;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--kb-text-secondary);
  background: var(--kb-bg-input);
  border: 1px solid var(--kb-border-default);
  border-radius: 999px;
  padding: 0.22rem 0.65rem;
  cursor: pointer;
}
.filter-chip:hover { border-color: var(--kb-primary); color: var(--kb-text-primary); }
.filter-chip.on {
  background: var(--kb-primary);
  border-color: var(--kb-primary);
  color: var(--kb-primary-fg);
}
.toolbar-right { display: flex; align-items: center; gap: 1rem; margin-left: auto; }
.sortwrap {
  font-size: 0.8rem;
  color: var(--kb-text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.sort {
  font: inherit;
  font-size: 0.82rem;
  color: var(--kb-text-primary);
  background: var(--kb-bg-input);
  border: 1px solid var(--kb-border-default);
  border-radius: 8px;
  padding: 0.35rem 0.5rem;
}
.count-label {
  max-width: 1320px;
  margin: 0 auto 0.75rem;
  color: var(--kb-text-secondary);
  font-size: 0.78rem;
}
.empty { text-align: center; color: var(--kb-text-secondary); padding: 3rem 1rem; }

.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  max-width: 1320px;
  margin: 0 auto;
}
.model-card {
  display: flex;
  flex-direction: column;
  background: var(--kb-bg-card);
  border: 1px solid var(--kb-border-default);
  border-radius: 12px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
}
.model-card:hover {
  transform: translateY(-3px);
  border-color: var(--kb-primary);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.4);
}
.thumb {
  width: 100%;
  height: 180px;
  display: block;
  object-fit: contain;
  background:
    radial-gradient(circle at 50% 42%, var(--kb-bg-muted) 0%, var(--kb-bg-body) 72%);
}
.card-body { padding: 0.7rem 0.8rem 0.85rem; }
.card-title { font-weight: 650; font-size: 0.98rem; }
.card-sub { display: flex; flex-wrap: wrap; gap: 0.4rem; row-gap: 0.35rem; margin: 0.4rem 0 0.5rem; }
.chip {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 0.12rem 0.5rem;
  border-radius: 999px;
  color: var(--kb-primary-fg);
  background: var(--c, var(--kb-primary));
  white-space: nowrap;
  flex: 0 0 auto;
}
.chip-parts {
  background: transparent;
  color: var(--kb-primary);
  border: 1px solid color-mix(in srgb, var(--kb-primary) 55%, transparent);
}
.chip-photos {
  background: transparent;
  color: var(--kb-accent, var(--kb-secondary, var(--kb-primary)));
  border: 1px solid color-mix(in srgb, var(--kb-accent, var(--kb-secondary, var(--kb-primary))) 55%, transparent);
}
.card-credit { color: var(--kb-text-muted); font-size: 0.72rem; margin-top: 0.15rem; }

/* Faction chip color tokens (shared with the site faction palette). */
.chip[data-faction="ISDF"]   { background: var(--kb-faction-i, #5dadff); color: #06121f; }
.chip[data-faction="Scion"]  { background: var(--kb-faction-f, #a87cff); color: #120a1f; }
.chip[data-faction="Hadean"] { background: var(--kb-faction-e, #ff8a55); color: #1f0f06; }
.chip[data-faction="Black Dog"] { background: var(--kb-text-secondary, #8a9099); color: #0d0f12; }

/* ---------------- viewer ---------------- */
.viewer { display: flex; flex-direction: column; flex: 1; min-height: 0; }
.viewer-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--kb-border-default);
  background: var(--kb-bg-card);
}
.viewer-titlewrap { display: flex; flex-direction: column; line-height: 1.25; flex: 1; min-width: 0; }
.viewer-title { font-weight: 700; }
.viewer-meta { color: var(--kb-text-secondary); font-size: 0.78rem; }
.viewer-credit {
  color: var(--kb-primary);
  font-weight: 600;
  text-decoration: none;
}
.viewer-credit:hover { text-decoration: underline; }
.viewer-actions { display: flex; gap: 0.5rem; align-items: center; }

.btn {
  font: inherit;
  font-size: 0.82rem;
  color: var(--kb-text-primary);
  background: var(--kb-bg-input);
  border: 1px solid var(--kb-border-default);
  border-radius: 8px;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
}
.btn:hover { border-color: var(--kb-primary); }
.btn:disabled { opacity: 0.6; cursor: default; }
.btn.toggle.on {
  background: var(--kb-primary);
  color: var(--kb-primary-fg);
  border-color: var(--kb-primary);
  font-weight: 650;
}
.back { color: var(--kb-text-secondary); }

/* segmented control (View: Standard | HQ | Photos) */
.seg { display: inline-flex; border: 1px solid var(--kb-border-default); border-radius: 8px; overflow: hidden; }
.seg-btn {
  font: inherit;
  font-size: 0.8rem;
  color: var(--kb-text-secondary);
  background: var(--kb-bg-input);
  border: none;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
  white-space: nowrap;
}
.seg-btn + .seg-btn { border-left: 1px solid var(--kb-border-default); }
.seg-btn:hover { color: var(--kb-text-primary); }
.seg-btn.on { background: var(--kb-primary); color: var(--kb-primary-fg); font-weight: 650; }
.seg-btn:disabled { opacity: 0.38; cursor: not-allowed; }
.seg-btn:disabled:hover { color: var(--kb-text-secondary); }

.stage { flex: 1; min-height: 0; position: relative; overflow: hidden; }
.stage canvas { display: block; width: 100%; height: 100%; touch-action: none; }

/* Left-edge control dock (click-through container; panes re-enable pointers). */
.viewer-dock {
  position: absolute;
  left: 14px;
  top: 14px;
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 240px;
  max-height: calc(100% - 28px);
  overflow-y: auto;
  pointer-events: none;
}
.light-panel {
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px 14px;
  width: 100%;
  box-sizing: border-box;
  background: color-mix(in srgb, var(--kb-bg-card) 92%, transparent);
  border: 1px solid var(--kb-border-default);
  border-radius: 10px;
  backdrop-filter: blur(6px);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
}
.light-row { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--kb-text-secondary); }
.light-head {
  color: var(--kb-text-primary);
  font-weight: 600;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--kb-border-default);
}
.light-toggle { margin-left: auto; width: 15px; height: 15px; accent-color: var(--kb-primary); cursor: pointer; }
label.light-head { cursor: pointer; }
.light-label { flex: 0 0 66px; }
.light-row input[type="range"] { flex: 1; min-width: 0; accent-color: var(--kb-primary); }
.light-val { flex: 0 0 38px; text-align: right; font-variant-numeric: tabular-nums; color: var(--kb-text-primary); }
.light-panel.off .light-row:not(.light-head) { opacity: 0.45; }
.scene-bg-block { display: flex; flex-direction: column; gap: 6px; }
.scene-bg-label { color: var(--kb-text-primary); font-weight: 600; font-size: 12px; }
.scene-bg-seg { display: flex; width: 100%; }
.scene-bg-seg .seg-btn { flex: 1; }
.scene-check { cursor: pointer; }
.scene-check input[type="checkbox"] { margin-left: auto; width: 15px; height: 15px; accent-color: var(--kb-primary); cursor: pointer; }

.fps-counter {
  position: absolute;
  right: 10px;
  bottom: 10px;
  z-index: 6;
  padding: 2px 7px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--kb-bg-card) 80%, transparent);
  border: 1px solid var(--kb-border-default);
  color: var(--kb-text-secondary);
  font-family: var(--kb-font-mono, ui-monospace, monospace);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  user-select: none;
}
.stage-loading {
  position: absolute;
  inset: 0;
  z-index: 8;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: color-mix(in srgb, var(--kb-bg-base, var(--kb-bg-body)) 55%, transparent);
  backdrop-filter: blur(2px);
  color: var(--kb-text-primary);
  font-size: 13px;
  font-weight: 600;
  pointer-events: none;
}
.stage-loading .spinner-border { color: var(--kb-primary); }

/* ---------------- photos gallery (view mode 3) ---------------- */
.photos {
  position: absolute;
  inset: 0;
  z-index: 7;
  overflow-y: auto;
  padding: 1.25rem;
  background: var(--kb-bg-body);
}
.photos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
  max-width: 1200px;
  margin: 0 auto;
}
.photo-card {
  border: 1px solid var(--kb-border-default);
  border-radius: 12px;
  overflow: hidden;
  background: var(--kb-bg-card);
}
.photo-card img { width: 100%; display: block; object-fit: contain; background: var(--kb-bg-muted); }
.lego-studio-link {
  margin-left: auto;
  align-self: center;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 650;
  line-height: 1;
  color: var(--kb-primary-fg);
  text-decoration: none;
  background: var(--kb-primary);
  border: 1px solid var(--kb-primary);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  white-space: nowrap;
}
.lego-studio-link:hover { filter: brightness(1.08); color: var(--kb-primary-fg); text-decoration: none; }

/* ---------------- /lego/studio gallery ---------------- */
.studio-grid {
  max-width: 1320px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.85rem;
}
.studio-tile {
  display: flex;
  flex-direction: column;
  padding: 0;
  border: 1px solid var(--kb-border-default);
  border-radius: 12px;
  overflow: hidden;
  background: var(--kb-bg-card);
  color: var(--kb-text-primary);
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.studio-tile:hover { border-color: var(--kb-primary); }
.studio-tile img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  background: var(--kb-bg-muted);
}
.studio-tile-cap {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.7rem;
  min-width: 0;
}
.studio-tile-name {
  flex: 1;
  min-width: 0;
  font-size: 0.82rem;
  font-weight: 650;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.studio-lightbox {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}
.studio-lightbox[hidden] { display: none; }
.studio-lightbox-backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  padding: 0;
  background: color-mix(in srgb, var(--kb-bg-body) 78%, transparent);
  cursor: pointer;
}
.studio-lightbox-frame {
  position: relative;
  z-index: 1;
  margin: 0;
  max-width: min(1100px, 94vw);
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--kb-border-default);
  border-radius: 14px;
  overflow: hidden;
  background: var(--kb-bg-card);
}
.studio-lightbox-frame img {
  display: block;
  max-width: 100%;
  max-height: calc(90vh - 4.5rem);
  object-fit: contain;
  background: var(--kb-bg-muted);
}
.studio-lightbox-cap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
  padding: 0.7rem 0.9rem;
  color: var(--kb-text-primary);
  font-size: 0.88rem;
}
.studio-lightbox-cap a { color: var(--kb-primary); text-decoration: none; }
.studio-lightbox-cap a:hover { text-decoration: underline; }
.studio-lightbox-credit { margin-left: auto; color: var(--kb-text-secondary); font-size: 0.8rem; }

.error { padding: 1.5rem; color: var(--kb-danger); font-size: 0.9rem; }

/* ---------------- footer (attribution) ---------------- */
.lego-footer {
  border-top: 1px solid var(--kb-border-default);
  background: var(--kb-bg-card);
  color: var(--kb-text-secondary);
  font-size: 0.76rem;
  padding: 0.6rem 1rem;
  text-align: center;
  line-height: 1.5;
}
.lego-footer a { color: var(--kb-primary); text-decoration: none; }
.lego-footer a:hover { text-decoration: underline; }

/* ---------------- mobile ---------------- */
@media (max-width: 640px) {
  .directory { padding: 0.85rem; }
  .toolbar { gap: 0.5rem; }
  .search { flex: 1 1 100%; }
  .toolbar-right { width: 100%; justify-content: space-between; margin-left: 0; }
  .chips { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; width: 100%; padding-bottom: 2px; }
  .filter-chip { flex: 0 0 auto; padding: 0.4rem 0.7rem; }
  .viewer-bar { flex-direction: column; align-items: stretch; gap: 0.5rem; }
  .viewer-actions { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 4px; }
  .viewer-actions > * { flex: 0 0 auto; }
  .btn, .seg-btn { padding: 0.55rem 0.8rem; }
  .viewer-dock { left: 0; right: 0; top: 0; width: auto; max-height: 60vh; gap: 0; }
  .light-panel { width: 100%; border-radius: 0 0 12px 12px; }
}
@media (max-width: 480px) {
  .model-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .thumb { height: 140px; }
}