/* ============================================
   ZLTN.XYZ GALLERY — The token is the canvas.
   ============================================ */

:root {
  --bg: #080808;
  --bg-card: #111111;
  --bg-card-hover: #161616;
  --border: #1f1f1f;
  --border-accent: #2a2a2a;
  --text: #e0e0e0;
  --text-muted: #666666;
  --text-dim: #444444;
  --accent: #888888;
  --mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  --sans: 'Inter', system-ui, -apple-system, sans-serif;
  --radius: 2px;
  --transition: 200ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 0.9rem;
  line-height: 1.6;
  min-height: 100vh;
  /* Subtle dot grid */
  background-image: radial-gradient(circle, #1a1a1a 1px, transparent 1px);
  background-size: 32px 32px;
}

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

/* ---- LAYOUT ---- */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ---- HEADER ---- */

.site-header {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.site-title {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.site-tagline {
  font-size: 1.75rem;
  font-weight: 300;
  color: var(--text);
  letter-spacing: -0.02em;
}

.site-tagline em {
  font-style: normal;
  color: var(--text-muted);
}

.piece-count {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

/* ---- GALLERY GRID ---- */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 0;
  background: var(--border);
}

.piece-card {
  background: var(--bg);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: background var(--transition);
  text-decoration: none;
  color: inherit;
}

.piece-card:hover {
  background: var(--bg-card);
}

.piece-card:hover .card-thumb {
  opacity: 0.85;
}

.card-thumb {
  width: 100%;
  aspect-ratio: 1;
  transition: opacity var(--transition);
  position: relative;
  overflow: hidden;
}

.card-thumb-inner {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-thumb-glyph {
  font-family: var(--mono);
  font-size: 3rem;
  opacity: 0.15;
  color: #fff;
}

.card-body {
  padding: 1.25rem 1.5rem 1.5rem;
  border-top: 1px solid var(--border);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.card-artist {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.card-title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
}

.card-concept {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-top: 0.15rem;
}

.card-arrow {
  margin-top: auto;
  padding-top: 1rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  transition: color var(--transition);
}

.piece-card:hover .card-arrow {
  color: var(--text-muted);
}

/* ---- FOOTER ---- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 0;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-text {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
}

/* ---- PIECE PAGE ---- */

.piece-header {
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--border);
}

.back-link {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  transition: color var(--transition);
}

.back-link:hover {
  color: var(--text);
}

.piece-title-block {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.piece-artist-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.piece-title {
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: -0.03em;
  color: var(--text);
}

.piece-year {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* ---- PIECE LAYOUT ---- */

.piece-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 0;
  min-height: calc(100vh - 200px);
  border-bottom: 1px solid var(--border);
}

.piece-embed {
  border-right: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
  min-height: 500px;
  position: relative;
}

.piece-embed iframe {
  width: 100%;
  height: 100%;
  min-height: 600px;
  border: none;
  display: block;
}

.piece-embed img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  display: block;
}

.embed-placeholder {
  width: 100%;
  height: 100%;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
}

.embed-hint {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  pointer-events: none;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* ---- PIECE SIDEBAR ---- */

.piece-sidebar {
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  overflow-y: auto;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sidebar-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
  margin-bottom: 0.2rem;
}

.sidebar-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.sidebar-text strong {
  color: var(--text);
  font-weight: 500;
}

.meta-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}

.meta-key {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.meta-val {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-align: right;
  word-break: break-all;
}

.meta-val a {
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-accent);
  transition: color var(--transition), border-color var(--transition);
}

.meta-val a:hover {
  color: var(--text);
  border-color: var(--accent);
}

/* ---- SPECIAL COMPONENTS ---- */

.state-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.state-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #2a8a2a;
  box-shadow: 0 0 6px #2a8a2a;
  animation: glow 2s ease-in-out infinite;
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 4px #2a8a2a; }
  50% { box-shadow: 0 0 10px #2a8a2a, 0 0 20px rgba(42,138,42,0.3); }
}

.provenance-chain {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.provenance-step {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-left: 1px solid var(--border-accent);
  padding-left: 1rem;
  position: relative;
}

.provenance-step::before {
  content: '';
  position: absolute;
  left: -3px;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-dim);
}

.provenance-step.burned {
  opacity: 0.5;
}

.provenance-step.burned::before {
  background: #663333;
}

.provenance-step.current::before {
  background: var(--text-muted);
}

.prov-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-muted);
}

.prov-note {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text-dim);
  margin-top: 0.1rem;
}

.diptych {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  width: 100%;
  height: 100%;
}

.diptych-panel {
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
  padding: 2rem;
  min-height: 400px;
}

.diptych-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.merge-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: #ffffff;
}

.matter-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 1px solid #444;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--text-dim);
}

.triptych {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  width: 100%;
  height: 100%;
}

.triptych-panel {
  background: #050510;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  padding: 2rem 1.5rem;
  min-height: 400px;
}

.poet-name {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--text);
  letter-spacing: -0.02em;
}

.poet-myth {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
  font-style: italic;
}

.poet-note {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--text-dim);
  text-align: center;
}

.poet-placeholder {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: #151525;
  border: 1px solid #2a2a3a;
}

.large-text-statement {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--text);
  line-height: 1.6;
  letter-spacing: -0.01em;
}

.code-text {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  background: #0d0d0d;
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: var(--radius);
  line-height: 1.7;
}

.halloween-warning {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: #8a2a2a;
  border: 1px solid #3a1a1a;
  padding: 0.75rem 1rem;
  line-height: 1.6;
  background: #0d0505;
}

/* ---- RESPONSIVE ---- */

@media (max-width: 1024px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .piece-layout {
    grid-template-columns: 1fr;
  }
  .piece-embed {
    border-right: none;
    border-bottom: 1px solid var(--border);
    min-height: 400px;
  }
  .piece-sidebar {
    padding: 1.5rem;
  }
}

@media (max-width: 640px) {
  .container { padding: 0 1rem; }
  .gallery-grid { grid-template-columns: 1fr; }
  .site-tagline { font-size: 1.25rem; }
  .piece-title { font-size: 1.5rem; }
  .triptych { grid-template-columns: 1fr; }
  .diptych { grid-template-columns: 1fr; }
  .site-header .container { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .site-footer .container { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
}