/* ============================================================
   RONIN MONK HEADQUARTERS — visual system layer
   Gallery · background-art system · subtle interactions
   Loaded AFTER styles.css. Dependency-free.
   See docs/WEBSITE_VISUAL_SYSTEM.md
   ============================================================ */

/* guard: decorative elements (hero ringlight, section art) may bleed
   past the viewport — clip instead of creating horizontal scroll */
html, body { overflow-x: clip; }

/* ------------------------------------------------------------
   1. BACKGROUND-ART SYSTEM
   Usage: <section class="band" data-bg="khanna"> …
   Each key maps to a CSS custom property set here. Backgrounds
   are decorative only — never place essential information in them.
   ------------------------------------------------------------ */

[data-bg] {
  position: relative;
  isolation: isolate;
}
[data-bg]::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: var(--section-art, none);
  background-repeat: no-repeat;
  background-position: var(--section-art-pos, right -8% center);
  background-size: var(--section-art-size, min(46vw, 520px));
  opacity: var(--section-art-opacity, 0.07);
  pointer-events: none;
}

[data-bg="ronin"]        { --section-art: url("../assets/gallery/ronin-monks-sigil.webp"); }
[data-bg="kabal"]        { --section-art: url("../assets/gallery/the-kabal-sigil.webp"); }
[data-bg="choir"]        { --section-art: url("../assets/gallery/choir-of-echoed-suns-sigil.webp"); }
[data-bg="khanna"]       { --section-art: url("../assets/gallery/sky-khan-supreme-sigil.webp"); --section-art-pos: left -6% center; }
[data-bg="artifact"]     { --section-art: url("../assets/gallery/choir-of-echoed-suns-sigil-2.webp"); --section-art-opacity: 0.05; }

/* readable overlay — guarantees contrast over any section art */
[data-bg] > .container { position: relative; }

/* mobile: shrink or remove section art to protect readability + data */
@media (max-width: 700px) {
  [data-bg]::before {
    background-size: 70vw;
    opacity: 0.04;
    background-position: center 110%;
  }
}

/* ------------------------------------------------------------
   2. RESONANCE DRIFT — extremely slow, subtle movement of
   section art. Transform-only (no layout recalculation).
   Fully disabled under prefers-reduced-motion.
   ------------------------------------------------------------ */

@media (prefers-reduced-motion: no-preference) {
  [data-bg][data-drift]::before {
    animation: resonance-drift 46s ease-in-out infinite alternate;
    will-change: transform;
  }
  @keyframes resonance-drift {
    from { transform: translateY(-0.6%) scale(1); }
    to   { transform: translateY(0.9%)  scale(1.015); }
  }
}

/* ------------------------------------------------------------
   3. ARCHIVE REVEAL — sections gently rise into view once.
   JS adds .reveal-ready on load and .revealed on intersection.
   Without JS (or with reduced motion) content is fully visible.
   ------------------------------------------------------------ */

@media (prefers-reduced-motion: no-preference) {
  .reveal-ready { opacity: 0; transform: translateY(14px); }
  .revealed {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }
}

/* ------------------------------------------------------------
   4. SIGNAL RESPONSE — hover / focus feedback on cards, tiles,
   and buttons. Strong focus indicators preserved.
   ------------------------------------------------------------ */

.card:hover, .g-tile-btn:hover img, .entry-card:hover {
  box-shadow: 0 0 0 1px var(--brass-3), 0 8px 30px rgba(212, 175, 55, 0.08);
}
a:focus-visible, button:focus-visible, .g-tile-btn:focus-visible {
  outline: 2px solid var(--brass-2);
  outline-offset: 3px;
}

/* ------------------------------------------------------------
   5. LIVING ARCHIVE INDICATOR — decorative status chip.
   ------------------------------------------------------------ */

.archive-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist-3);
  border: 1px solid var(--obsidian-4);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
}
.archive-indicator::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brass-2);
}
@media (prefers-reduced-motion: no-preference) {
  .archive-indicator::before { animation: archive-pulse 3.5s ease-in-out infinite; }
  @keyframes archive-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.35; }
  }
}

/* ------------------------------------------------------------
   6. ENTRY-POINT CARDS ("Choose Your Entry Point")
   ------------------------------------------------------------ */

.entry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.1rem;
  margin-top: 1.6rem;
}
.entry-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background: var(--obsidian-2);
  border: 1px solid var(--obsidian-4);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
  text-decoration: none;
  color: var(--mist-1);
  transition: border-color 0.25s ease;
}
.entry-card:hover { border-color: var(--brass-3); }
.entry-card .entry-name {
  font-family: var(--font-display);
  font-size: 1.02rem;
  letter-spacing: 0.06em;
  color: var(--brass-1);
}
.entry-card .entry-plain {
  font-size: 0.88rem;
  color: var(--mist-2);
  line-height: 1.5;
}
.entry-card .entry-state {
  margin-top: auto;
  padding-top: 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mist-3);
}
.entry-card[data-pending] { opacity: 0.75; }
.entry-card[data-pending] .entry-state { color: var(--amber-1); }

/* ------------------------------------------------------------
   7. THE GALLERY — grid, filters, lightbox
   ------------------------------------------------------------ */

.gallery-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.4rem 0 1.8rem;
}
.gallery-filter-btn {
  font: inherit;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--mist-2);
  background: var(--obsidian-2);
  border: 1px solid var(--obsidian-4);
  border-radius: 999px;
  padding: 0.4rem 1rem;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.gallery-filter-btn:hover { border-color: var(--brass-3); color: var(--mist-1); }
.gallery-filter-btn[aria-pressed="true"] {
  border-color: var(--brass-2);
  color: var(--brass-2);
}

.g-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.2rem;
}
.g-featured {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.2rem;
  margin-bottom: 2.2rem;
}
.g-tile { margin: 0; }
.g-tile-btn {
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--obsidian-4);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--obsidian-2);
  cursor: pointer;
  position: relative;
}
.g-tile-btn img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}
.g-caption {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding: 0.55rem 0.2rem 0;
}
.g-cap-title { font-size: 0.9rem; color: var(--mist-1); }
.g-cap-cat { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--mist-3); }
.g-empty { color: var(--mist-3); font-style: italic; }

.g-noncanon-badge {
  position: absolute;
  top: 0.6rem;
  left: 0.6rem;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  background: rgba(10, 10, 15, 0.85);
  color: var(--amber-1);
  border: 1px solid var(--amber-2);
  border-radius: 4px;
  padding: 0.2rem 0.5rem;
}

/* lightbox */
.g-lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background: rgba(6, 6, 10, 0.92);
  padding: 1rem;
}
body.g-lb-open { overflow: hidden; }
.g-lb-panel {
  position: relative;
  max-width: min(920px, 92vw);
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  background: var(--obsidian-2);
  border: 1px solid var(--obsidian-4);
  border-radius: var(--radius-lg);
  overflow: auto;
}
.g-lb-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 68vh;
  object-fit: contain;
  background: var(--obsidian-0);
}
.g-lb-info { padding: 1rem 1.3rem 1.3rem; }
.g-lb-noncanon { position: static; display: inline-block; margin-bottom: 0.5rem; }
.g-lb-title { font-family: var(--font-display); font-size: 1.2rem; margin: 0 0 0.35rem; color: var(--brass-1); }
.g-lb-desc { margin: 0 0 0.4rem; color: var(--mist-2); font-size: 0.95rem; }
.g-lb-meta { margin: 0; font-size: 0.75rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--mist-3); }
.g-lb-close, .g-lb-prev, .g-lb-next {
  font: inherit;
  font-size: 1.3rem;
  line-height: 1;
  color: var(--mist-1);
  background: var(--obsidian-3);
  border: 1px solid var(--obsidian-4);
  border-radius: 50%;
  width: 2.6rem;
  height: 2.6rem;
  cursor: pointer;
  flex: none;
}
.g-lb-close { position: absolute; top: 0.7rem; right: 0.7rem; z-index: 2; }
.g-lb-close:hover, .g-lb-prev:hover, .g-lb-next:hover { border-color: var(--brass-2); color: var(--brass-2); }

@media (max-width: 700px) {
  .g-lightbox { gap: 0.25rem; padding: 0.5rem; }
  .g-lb-prev, .g-lb-next { width: 2.2rem; height: 2.2rem; font-size: 1.1rem; }
}

/* no-JS fallback message on gallery page */
.g-nojs { color: var(--mist-2); border: 1px dashed var(--obsidian-4); border-radius: var(--radius); padding: 1rem 1.2rem; }