/* ─────────────────────────────────────────────────────────────
   Page 08 — Imagery & Icons
   ───────────────────────────────────────────────────────────── */

/* Photo-card grid for cosmic imagery references */
.img-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
@media (max-width: 900px) { .img-grid { grid-template-columns: 1fr; } }
.img-tile {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.10);
  background: #050818;
  aspect-ratio: 1;
  margin: 0;
  cursor: default;
}
.img-tile.wide { grid-column: 1 / -1; aspect-ratio: 23 / 10; }
.img-tile.double { grid-column: span 2; aspect-ratio: 2 / 1; }
@media (max-width: 900px) {
  .img-tile.wide, .img-tile.double { aspect-ratio: 16 / 10; grid-column: auto; }
}
.img-tile img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1200ms cubic-bezier(0.22, 1, 0.36, 1);
  transform: scale(1);
}
.img-tile:hover img { transform: scale(1.03); }
.img-tile figcaption {
  position: absolute;
  left: 18px;
  bottom: 14px;
  right: 18px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  z-index: 2;
  pointer-events: none;
}
.img-tile figcaption .ix {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.78);
  padding: 4px 8px;
  background: rgba(0,0,0,0.4);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.img-tile figcaption .ix b { color: #FFFFFF; font-weight: 500; margin-right: 6px; }
.img-tile figcaption .ratio {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.55);
  padding: 4px 6px;
  background: rgba(0,0,0,0.4);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* Reveal motion for image tiles */
.img-tile[data-reveal] img {
  transform: scale(1.08);
  opacity: 0;
  transition: transform 1600ms cubic-bezier(0.22, 1, 0.36, 1), opacity 800ms ease;
}
.img-tile[data-reveal].is-revealed img {
  transform: scale(1);
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .img-tile[data-reveal] img,
  .img-tile:hover img {
    transform: none !important;
    transition: none !important;
    opacity: 1 !important;
  }
}
.cosmic-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
@media (max-width: 900px) { .cosmic-row { grid-template-columns: 1fr; } }
.cosmic-slate {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  aspect-ratio: 4 / 5;
  background: linear-gradient(180deg, #000000, #050818);
  isolation: isolate;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px 22px 22px;
}
.cosmic-slate svg.scene {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}
.cosmic-slate::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.55) 0.5px, transparent 0.5px),
    radial-gradient(circle, rgba(255,255,255,0.32) 0.5px, transparent 0.5px);
  background-size: 180px 180px, 280px 280px;
  background-position: 0 0, 90px 60px;
  opacity: 0.55;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent 85%);
  z-index: 1;
}
.cosmic-slate .info {
  position: relative;
  z-index: 2;
}
.cosmic-slate .tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin-bottom: 8px;
}
.cosmic-slate .tag b { color: var(--blue-300); font-weight: 500; margin-right: 6px; }
.cosmic-slate h4 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.014em;
  margin: 0 0 4px;
  color: #FFFFFF;
}
.cosmic-slate p {
  font-size: 13px;
  color: rgba(255,255,255,0.72);
  line-height: 1.55;
  margin: 0;
  max-width: 38ch;
}

/* Structural vocabulary — light surface diagrams */
.structural-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
@media (max-width: 900px) { .structural-row { grid-template-columns: 1fr; } }
.structural-slate {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.08);
  background: #FFFFFF;
  color: #000;
  aspect-ratio: 4 / 5;
  display: flex;
  flex-direction: column;
  position: relative;
}
.structural-slate .stage {
  flex: 1;
  position: relative;
  padding: 28px;
  background: #FAFAFB;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  overflow: hidden;
}
.structural-slate .stage svg { width: 100%; height: 100%; display: block; overflow: visible; }
.structural-slate .info {
  padding: 18px 22px 22px;
}
.structural-slate .tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #767781;
  margin-bottom: 6px;
}
.structural-slate .tag b { color: var(--blue-700); font-weight: 500; margin-right: 6px; }
.structural-slate h4 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.012em;
  margin: 0 0 4px;
  color: #000;
}
.structural-slate p {
  font-size: 13px;
  color: #4E4E56;
  line-height: 1.55;
  margin: 0;
}

/* Imagery don'ts — strip with photographic + emoji + 3D rendered */
.img-donts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
@media (max-width: 900px) { .img-donts { grid-template-columns: repeat(2, 1fr); } }
.img-dont {
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: rgba(255,255,255,0.02);
}
.img-dont .demo {
  height: 130px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.img-dont .demo::after {
  content: "";
  position: absolute;
  left: 14%;
  right: 14%;
  top: 50%;
  height: 2px;
  background: var(--orange-500);
  transform: rotate(-10deg);
  z-index: 2;
}
.img-dont .info {
  padding: 12px 16px 16px;
  border-top: 1px solid var(--border-subtle);
}
.img-dont .info .x {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange-300);
  margin-bottom: 4px;
}
.img-dont .info h5 {
  font-size: 13px;
  font-weight: 600;
  margin: 0 0 2px;
}
.img-dont .info p {
  font-size: 11.5px;
  color: var(--fg-muted);
  line-height: 1.45;
  margin: 0;
}

/* Particle / dust treatment specimen */
.particles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 820px) { .particles { grid-template-columns: 1fr; } }
.particles .specimen {
  position: relative;
  height: 240px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  background: linear-gradient(180deg, #000000, #050818);
}
.particles .specimen::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.55) 0.5px, transparent 0.5px),
    radial-gradient(circle, rgba(255,255,255,0.32) 0.5px, transparent 0.5px);
  background-size: 180px 180px, 280px 280px;
  background-position: 0 0, 90px 60px;
  opacity: 0.55;
}
.particles .specimen.sparse::after { background-size: 280px 280px, 420px 420px; opacity: 0.32; }
.particles .specimen .meta {
  position: absolute;
  bottom: 14px;
  left: 18px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.62);
  z-index: 2;
}
.particles .specimen .meta b { color: #FFFFFF; font-weight: 500; }

/* Icon system — grid spec + icon strip */
.icon-system {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 28px;
  align-items: stretch;
}
@media (max-width: 900px) { .icon-system { grid-template-columns: 1fr; } }
.icon-spec {
  position: relative;
  padding: 0;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  background:
    repeating-linear-gradient(0deg, rgba(255,255,255,0.04) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.04) 0 1px, transparent 1px 24px),
    rgba(255,255,255,0.02);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.icon-spec svg {
  width: 240px;
  height: 240px;
}
.icon-spec .annot {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue-300);
}
.icon-spec .annot.size { top: 14px; left: 14px; }
.icon-spec .annot.stroke { bottom: 14px; left: 14px; }
.icon-spec .annot.grid { top: 14px; right: 14px; }
.icon-rules {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.icon-rules .rule {
  padding: 16px 18px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.02);
}
.icon-rules .rule .n {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-300);
  margin-bottom: 4px;
}
.icon-rules .rule h5 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.005em;
  margin: 0 0 4px;
}
.icon-rules .rule p {
  font-size: 13px;
  color: var(--fg-secondary);
  line-height: 1.55;
  margin: 0;
}

/* Icon library — 12 icons in tabular grid */
.icon-library {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xl);
  overflow: hidden;
}
@media (max-width: 900px) { .icon-library { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 540px) { .icon-library { grid-template-columns: repeat(2, 1fr); } }
.icon-library .icon-cell {
  padding: 22px 14px 18px;
  border-right: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.02);
}
.icon-library .icon-cell:last-child { border-right: 0; }
.icon-library .icon-cell .glyph {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg-default);
}
.icon-library .icon-cell .glyph svg { width: 28px; height: 28px; stroke: currentColor; fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.icon-library .icon-cell .name {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
  text-align: center;
}