/* showcase.css — exhibit gallery + piece template presentation */

.showcase-hero,
.showcase-main,
.showcase-piece-hero,
.showcase-piece-main {
  --showcase-grid-line: color-mix(in srgb, var(--accent) 5%, transparent);
  --showcase-border-card: color-mix(in srgb, var(--border) 65%, transparent);
  --showcase-border-hover: color-mix(in srgb, var(--accent) 55%, var(--border));
  --showcase-surface-card: color-mix(in srgb, var(--surface-raised) 88%, transparent);
  --showcase-shadow-card: var(--shadow-sm);
  --showcase-shadow-card-hover: var(--shadow-lg);
}

/* ── Gallery hero ─────────────────────────────────────────────────────── */
.showcase-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(var(--space-10), 8vw, var(--space-16)) 0 clamp(var(--space-8), 6vw, var(--space-12));
  border-bottom: 1px solid var(--border-subtle);
  background:
    radial-gradient(920px 420px at 88% -8%, var(--hero-glow), transparent 68%),
    radial-gradient(640px 320px at 6% 96%, color-mix(in srgb, var(--accent) 6%, transparent), transparent 72%),
    var(--bg);
}

.showcase-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--showcase-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--showcase-grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse 72% 58% at 50% 38%, black 18%, transparent 86%);
  -webkit-mask-image: radial-gradient(ellipse 72% 58% at 50% 38%, black 18%, transparent 86%);
}

.showcase-hero::after {
  content: "";
  position: absolute;
  top: 18%;
  right: clamp(4%, 8vw, 12%);
  width: 7rem;
  height: 7rem;
  pointer-events: none;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 22%, transparent), transparent 68%);
  animation: showcaseHeroAccent 6s var(--ease-in-out, ease-in-out) infinite;
}

@keyframes showcaseHeroAccent {
  0%, 100% { opacity: 0.45; transform: scale(1) translateY(0); }
  50% { opacity: 0.85; transform: scale(1.08) translateY(-6px); }
}

.showcase-hero .wrap {
  position: relative;
  z-index: 1;
}

.showcase-kicker,
.exhibit-card__id,
.exhibit-card__coord,
.piece-chip,
.piece-nav__label,
.piece-nav__meta,
.showcase-motion-note {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.showcase-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin: 0 0 var(--space-4);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--showcase-border-card);
  border-radius: var(--radius-full);
  color: var(--accent-text);
  font-weight: 700;
  background: color-mix(in srgb, var(--surface-raised) 82%, transparent);
  box-shadow: var(--shadow-xs), inset 0 1px 0 color-mix(in srgb, var(--text) 4%, transparent);
}

.showcase-coord {
  color: var(--text-subtle);
  font-weight: 600;
  letter-spacing: 0.06em;
}

.showcase-hero h1 {
  max-width: 14ch;
  margin: 0 0 var(--space-4);
  font-family: var(--font-display, var(--font-sans));
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  font-weight: 680;
  line-height: 1.03;
  letter-spacing: -0.038em;
  color: var(--text);
}

.showcase-hero .sub {
  max-width: 42ch;
  margin: 0;
  font-size: var(--text-lg);
  line-height: 1.55;
  color: var(--text-muted);
  letter-spacing: -0.01em;
}

/* ── Exhibit grid ─────────────────────────────────────────────────────── */
.showcase-main {
  padding: clamp(var(--space-8), 6vw, var(--space-12)) 0 var(--space-16);
}

.exhibit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 17.5rem), 1fr));
  gap: var(--space-5);
}

.exhibit-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--showcase-border-card);
  background: var(--showcase-surface-card);
  box-shadow: var(--showcase-shadow-card);
  color: inherit;
  text-decoration: none;
  transition:
    transform var(--dur-normal, 260ms) var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1)),
    box-shadow var(--dur-normal, 260ms) var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1)),
    border-color var(--dur-fast, 180ms) ease;
  animation: showcaseFadeInUp var(--dur-deliberate, 400ms) var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1)) backwards;
}

.exhibit-card:hover {
  transform: translateY(-3px) scale(1.004);
  border-color: var(--showcase-border-hover);
  box-shadow: var(--showcase-shadow-card-hover), 0 0 0 1px color-mix(in srgb, var(--accent) 18%, transparent);
}

.exhibit-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  box-shadow: var(--focus-ring, 0 0 0 1px var(--bg), 0 0 0 3px var(--accent));
}

.exhibit-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.exhibit-card__id {
  color: var(--accent-text);
  font-weight: 700;
}

.exhibit-card__coord {
  color: var(--text-subtle);
  font-weight: 600;
}

.exhibit-card__preview {
  display: grid;
  place-items: center;
  aspect-ratio: 4 / 3;
  margin-bottom: var(--space-4);
  border-radius: var(--radius);
  border: 1px solid var(--border-subtle);
  background:
    radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 55%),
    var(--bg-subtle);
  color: var(--accent);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--text) 4%, transparent);
}

.exhibit-card__preview svg {
  width: min(4.5rem, 42%);
  height: auto;
}

.exhibit-card__body h2 {
  margin: 0 0 var(--space-2);
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: 650;
  letter-spacing: -0.015em;
  line-height: 1.2;
  color: var(--text);
}

.exhibit-card__technique {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--text-muted);
}

.exhibit-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: auto;
  padding-top: var(--space-4);
}

.exhibit-card__arrow {
  color: var(--text-subtle);
  font-size: var(--text-lg);
  transition: transform var(--dur-fast, 180ms) var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1));
}

.exhibit-card:hover .exhibit-card__arrow {
  transform: translateX(3px);
  color: var(--accent);
}

.exhibit-status {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.status-completed {
  background: color-mix(in srgb, var(--teal-9, #12b594) 12%, transparent);
  color: var(--teal-11, #0c8066);
  border: 1px solid color-mix(in srgb, var(--teal-9, #12b594) 30%, transparent);
}

.status-completed::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--teal-9, #12b594);
}

.status-coming-soon {
  background: color-mix(in srgb, var(--amber-9) 14%, var(--surface-raised));
  color: var(--amber-10);
  border: 1px solid color-mix(in srgb, var(--amber-9) 35%, var(--border));
}

@keyframes showcaseFadeInUp {
  0% { opacity: 0; transform: translateY(12px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ── Piece template ───────────────────────────────────────────────────── */
.showcase-piece-hero {
  position: relative;
  padding: clamp(var(--space-8), 6vw, var(--space-12)) 0 var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
  background:
    radial-gradient(760px 360px at 82% -10%, var(--hero-glow), transparent 70%),
    var(--bg);
}

.showcase-piece-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--showcase-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--showcase-grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 85%);
}

.showcase-piece-hero .wrap {
  position: relative;
  z-index: 1;
}

.piece-hero-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
}

.piece-hero-copy h1 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display, var(--font-sans));
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 680;
  line-height: 1.05;
  letter-spacing: -0.035em;
  color: var(--text);
}

.piece-hero-meta {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.piece-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--showcase-border-card);
  background: color-mix(in srgb, var(--surface-raised) 84%, transparent);
  color: var(--accent-text);
  font-weight: 700;
  box-shadow: var(--shadow-xs);
}

.showcase-piece-main {
  padding: var(--space-8) 0 var(--space-16);
}

.piece-frame-wrap {
  margin: 0 calc(-1 * var(--space-6)) var(--space-8);
}

.piece-frame {
  position: relative;
  min-height: clamp(16rem, 42vw, 28rem);
  display: grid;
  place-items: center;
  padding: clamp(var(--space-6), 5vw, var(--space-10));
  border-block: 1px solid var(--border-subtle);
  background:
    radial-gradient(900px 420px at 50% 0%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 62%),
    var(--bg-subtle);
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity var(--dur-deliberate, 400ms) var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1)),
    transform var(--dur-deliberate, 400ms) var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1));
}

.piece-frame.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.piece-frame::before,
.piece-frame::after {
  content: "";
  position: absolute;
  width: 1.125rem;
  height: 1.125rem;
  pointer-events: none;
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
}

.piece-frame::before {
  top: var(--space-4);
  left: var(--space-4);
  border-top: 2px solid;
  border-left: 2px solid;
}

.piece-frame::after {
  bottom: var(--space-4);
  right: var(--space-4);
  border-bottom: 2px solid;
  border-right: 2px solid;
}

.piece-frame svg,
.piece-frame-stage {
  width: min(100%, 52rem);
  height: auto;
}

.piece-callout {
  margin: var(--space-6) 0 var(--space-8);
}

.piece-playground {
  margin-bottom: var(--space-8);
}

.piece-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-subtle);
}

.piece-nav__link {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--showcase-border-card);
  background: var(--showcase-surface-card);
  color: inherit;
  text-decoration: none;
  box-shadow: var(--showcase-shadow-card);
  transition:
    transform var(--dur-normal, 260ms) var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1)),
    border-color var(--dur-fast, 180ms) ease,
    box-shadow var(--dur-normal, 260ms) var(--ease-out-expo, cubic-bezier(0.16, 1, 0.3, 1));
}

.piece-nav__link:hover {
  transform: translateY(-2px);
  border-color: var(--showcase-border-hover);
  box-shadow: var(--showcase-shadow-card-hover);
}

.piece-nav__link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  box-shadow: var(--focus-ring, 0 0 0 1px var(--bg), 0 0 0 3px var(--accent));
}

.piece-nav__link--next {
  text-align: right;
  align-items: flex-end;
}

.piece-nav__meta {
  color: var(--text-subtle);
  font-weight: 700;
}

.piece-nav__label {
  color: var(--text);
  font-size: var(--text-sm);
  font-weight: 650;
  letter-spacing: 0.02em;
  text-transform: none;
}

.showcase-motion-note {
  margin: var(--space-6) 0 0;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  border: 1px solid var(--border-subtle);
  background: var(--bg-subtle);
  color: var(--text-muted);
  line-height: 1.55;
  text-transform: none;
  letter-spacing: normal;
  font-size: var(--text-sm);
}

/* ── Coming soon ──────────────────────────────────────────────────────── */
.showcase-soon {
  padding: clamp(var(--space-10), 8vw, var(--space-16)) 0 var(--space-16);
}

.showcase-soon-card {
  max-width: 36rem;
  margin: 0 auto;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--showcase-border-card);
  background: var(--showcase-surface-card);
  box-shadow: var(--showcase-shadow-card);
  text-align: center;
}

.showcase-soon-preview {
  display: grid;
  place-items: center;
  width: 6rem;
  height: 6rem;
  margin: 0 auto var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background: var(--bg-subtle);
  color: var(--accent);
}

.showcase-soon-preview svg {
  width: 3rem;
  height: auto;
}

.showcase-soon-card h1 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display, var(--font-sans));
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.03em;
}

.showcase-soon-card .sub {
  margin: 0 0 var(--space-6);
  color: var(--text-muted);
  line-height: 1.6;
}

.showcase-soon-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
}

/* ── Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .piece-frame-wrap {
    margin-inline: calc(-1 * var(--space-4));
  }

  .piece-nav {
    grid-template-columns: 1fr;
  }

  .piece-nav__link--next {
    text-align: left;
    align-items: flex-start;
  }
}

@media (max-width: 360px) {
  .exhibit-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .exhibit-card {
    padding: var(--space-4);
  }

  .showcase-hero h1 {
    font-size: clamp(2rem, 10vw, 2.5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .showcase-hero::after,
  .exhibit-card,
  .piece-frame {
    animation: none;
    transition: none;
  }

  .piece-frame {
    opacity: 1;
    transform: none;
  }

  .exhibit-card:hover,
  .piece-nav__link:hover {
    transform: none;
  }
}