/* ==========================================================================
   components.css — Category filter, project cards, buttons, badges
   ========================================================================== */

/* ---- Category filter ---- */
.category-filter {
  margin-bottom: 2.5rem;
  overflow-x: auto;
  padding: 0 1.5rem;
  display: flex;
  gap: 0.5rem;
  width: max-content;
}

@media (min-width: 640px) {
  .category-filter {
    width: 100%;
    flex-wrap: wrap;
    justify-content: center;
    overflow: visible;
    padding: 0;
  }
}

.filter-tab {
  position: relative;
  flex-shrink: 0;
  white-space: nowrap;
  border-radius: 9999px;
  border: 1px solid var(--border-color);
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted-foreground);
  transition: color 0.3s ease, border-color 0.3s ease;
}

.filter-tab:hover {
  border-color: rgba(201, 162, 39, 0.4);
  color: var(--museum-ivory);
}

.filter-tab.is-active {
  border-color: rgba(201, 162, 39, 0.6);
  color: var(--museum-gold-soft);
}

.filter-tab.is-active::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 9999px;
  border: 1px solid rgba(201, 162, 39, 0.4);
  background: rgba(201, 162, 39, 0.1);
  box-shadow:
    0 0 20px -6px rgba(201, 162, 39, 0.5),
    inset 0 0 12px -4px rgba(201, 162, 39, 0.3);
  transition: opacity 0.3s ease;
}

.filter-tab-label {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.filter-tab-count {
  font-family: var(--font-mono);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
  color: rgba(244, 236, 216, 0.3);
}

.filter-tab.is-active .filter-tab-count {
  color: rgba(201, 162, 39, 0.7);
}

/* ---- Gallery grid ---- */
.gallery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 640px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---- Project exhibit card ---- */
.exhibit-card {
  position: relative;
  width: 100%;
  max-width: 28rem;
  margin: 0 auto;
  perspective: 1200px;
  user-select: none;
}

.exhibit-card-body {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  transform-style: preserve-3d;
  transition: box-shadow 0.5s ease;
  box-shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.8);
}

.exhibit-card.is-active .exhibit-card-body {
  box-shadow:
    0 0 0 1px rgba(201, 162, 39, 0.45),
    0 24px 60px -12px rgba(201, 162, 39, 0.3),
    0 0 80px -20px rgba(47, 107, 79, 0.45);
}

/* Thumbnail */
.exhibit-thumbnail {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.exhibit-thumbnail-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1);
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.exhibit-card.is-active .exhibit-thumbnail-img {
  transform: scale(1.08);
}

/* Dark overlay */
.exhibit-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.4) 50%, rgba(0, 0, 0, 0.1));
  opacity: 0.25;
  transition: opacity 0.4s ease;
}

.exhibit-card.is-active .exhibit-overlay {
  opacity: 1;
}

/* Scanlines */
.exhibit-scanlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.4;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(255, 255, 255, 0.025) 0px,
    rgba(255, 255, 255, 0.025) 1px,
    transparent 1px,
    transparent 3px
  );
}

/* Dust particles */
.exhibit-dust {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.5;
}

.exhibit-dust::before,
.exhibit-dust::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(244, 236, 216, 0.35), transparent),
    radial-gradient(1px 1px at 70% 60%, rgba(244, 236, 216, 0.25), transparent),
    radial-gradient(1px 1px at 40% 80%, rgba(244, 236, 216, 0.3), transparent),
    radial-gradient(1px 1px at 85% 25%, rgba(244, 236, 216, 0.2), transparent),
    radial-gradient(1px 1px at 55% 45%, rgba(244, 236, 216, 0.28), transparent);
  background-size: 200% 200%;
  animation: dust-drift 18s linear infinite;
}

.exhibit-dust::after {
  animation-duration: 26s;
  animation-direction: reverse;
  opacity: 0.6;
}

/* Artifact ID badge */
.artifact-id {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 20;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--museum-gold-soft);
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(201, 162, 39, 0.4);
  border-radius: 9999px;
  padding: 0.25rem 0.625rem;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* Hover action buttons */
.exhibit-actions {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.exhibit-card.is-active .exhibit-actions {
  opacity: 1;
  transform: translateY(0);
}

.exhibit-actions-inner {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .exhibit-actions-inner {
    flex-direction: row;
  }
}

/* Action button */
.action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: var(--radius-sm);
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--museum-ivory);
  transition: all 0.3s ease;
}

.action-btn:hover {
  border-color: var(--museum-gold);
  background: rgba(201, 162, 39, 0.15);
  color: var(--museum-gold-soft);
  box-shadow: 0 0 20px -4px rgba(201, 162, 39, 0.6);
}

.action-btn svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.action-btn .external-icon {
  width: 0.75rem;
  height: 0.75rem;
  opacity: 0.6;
  transition: transform 0.3s ease;
}

.action-btn:hover .external-icon {
  transform: translateX(2px);
}

/* Bottom info section */
.exhibit-info {
  position: relative;
  z-index: 10;
  padding: 1.25rem;
}

.exhibit-spotlight {
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  pointer-events: none;
  background: radial-gradient(
    500px circle at 50% 50%,
    rgba(201, 162, 39, 0.2),
    rgba(47, 107, 79, 0.12) 28%,
    transparent 60%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
}

.exhibit-card.is-active .exhibit-spotlight {
  opacity: 1;
}

.exhibit-info-content {
  position: relative;
}

.exhibit-title-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}

.exhibit-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--museum-ivory);
}

.exhibit-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: rgba(201, 162, 39, 0.7);
  flex-shrink: 0;
}

.exhibit-description {
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--muted-foreground);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.exhibit-card.is-active .exhibit-description {
  opacity: 0.35;
  transform: translateY(6px);
}

/* Tech stack badges */
.exhibit-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.exhibit-card.is-active .exhibit-tech {
  opacity: 0.4;
  transform: translateY(4px);
}

.tech-badge {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  border-radius: 9999px;
  border: 1px solid;
  padding: 0.25rem 0.625rem;
  font-size: 11px;
  font-weight: 500;
}

.tech-badge svg {
  width: 0.75rem;
  height: 0.75rem;
  flex-shrink: 0;
}

/* Top shimmer line */
.exhibit-shimmer {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(201, 162, 39, 0.8), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.exhibit-card.is-active .exhibit-shimmer {
  opacity: 1;
}

/* Empty state */
.empty-state {
  padding: 4rem 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: rgba(244, 236, 216, 0.35);
}

/* Hero link buttons */
.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--museum-ivory);
  transition: all 0.3s ease;
}

.hero-link:hover {
  border-color: var(--museum-gold);
  color: var(--museum-gold-soft);
  box-shadow: 0 0 20px -4px rgba(201, 162, 39, 0.6);
}

.hero-link svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}