/*
 * Photography page — modular dark glass layout.
 * Pair with assets/js/photography-page.js and photography/gallery.json.
 * Gallery JPEGs live in gallery/; WebP variants in gallery/webp/ (see optimize script).
 *
 * Layout model:
 * - Mobile/tablet (<992px): hero stacks above gallery in normal document flow.
 * - Desktop (≥992px): hero and gallery share one grid row; gallery overlaps hero.
 */

.photography-page {
  --photography-nav-offset: clamp(72px, 10vh, 96px);
  --photography-col-stagger-1: clamp(4rem, 9vw, 6.5rem);
  --photography-col-stagger-2: clamp(1.75rem, 4vw, 3rem);
  --photography-col-stagger-3: 0;
  --photography-reveal-rise: clamp(3rem, 10vh, 5rem);
  --photography-reveal-duration: 0.85s;
  --photography-headline-lift-serenity: 0.18em;
  --photography-headline-lift-by: 0.36em;
  --photography-headline-lift-niloy: 0.72em;
  --photography-headline-shift: clamp(12px, 1.4vw, 18px);
  --photography-headline-niloy-extra: 10px;
  color: var(--text-primary);
  overflow-x: clip;
}

.photography-page .site-shell {
  overflow: visible;
}

/* ---- Stage ---- */

.photography-page__stage {
  position: relative;
  overflow: visible;
  padding: calc(var(--photography-nav-offset) + var(--space-md)) var(--space-sm) 0;
}

.photography-page__stage-inner {
  max-width: 1200px;
  margin: 0 auto;
}

/* Mobile/tablet: natural stack — hero, then gallery */
.photography-page__hero {
  position: relative;
  z-index: 1;
}

.photography-page__gallery {
  position: relative;
  z-index: 2;
  margin-top: var(--space-sm);
}

/* Staircase title: Serenity (low) → by (mid) → Niloy (high) */
.photography-page__headline {
  display: inline-flex;
  align-items: flex-end;
  flex-wrap: nowrap;
  gap: 0.18em;
  margin: 0;
  padding: 0.1em 0 0.14em;
  font-size: clamp(2.75rem, 7.8vw, 5.75rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  pointer-events: none;
  user-select: none;
}

.photography-page__headline-word {
  display: inline-block;
  flex-shrink: 0;
}

.photography-page__headline-word--serenity {
  margin-bottom: var(--photography-headline-lift-serenity);
}

.photography-page__headline-word--by {
  margin-bottom: var(--photography-headline-lift-by);
}

.photography-page__headline-word--niloy {
  margin-bottom: var(--photography-headline-lift-niloy);
}

.photography-page__subtitle {
  margin: 0;
  max-width: 100%;
  font-family: "Fraunces", serif;
  font-size: clamp(1.25rem, 2.35vw, 1.875rem);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.photography-page__narrative {
  position: relative;
  z-index: 3;
  padding: var(--space-lg) var(--space-sm) var(--space-md);
  max-width: 1200px;
  margin: 0 auto;
}

.photography-page__subtitle--lead {
  margin: var(--space-lg) 0 var(--space-md);
}

.photography-card-grid + .photography-page__subtitle--lead {
  margin-top: var(--space-xl);
}

/* ---- Platform + exhibition card grids (.cert-card pattern) ---- */

.photography-card-grid {
  --photography-card-max-width: 320px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.photography-card-grid .cert-card {
  width: 100%;
}

.photography-card-grid .cert-card img {
  height: clamp(140px, 18vw, 180px);
  object-fit: cover;
  transition: transform var(--transition-base);
}

.photography-card-grid .cert-card-info span {
  text-transform: none;
  letter-spacing: 0;
}

.photography-card-grid .cert-card:hover,
.photography-card-grid .cert-card:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(var(--accent-rgb), 0.35);
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.35),
    0 0 0 1px rgba(var(--accent-rgb), 0.22),
    0 0 20px rgba(var(--accent-rgb), 0.12);
}

.photography-card-grid .cert-card:hover img,
.photography-card-grid .cert-card:focus-visible img {
  transform: scale(1.04);
}

/* ---- Masonry gallery ---- */

.photography-masonry {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.photography-masonry__col {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.photography-masonry--parallax .photography-masonry__col {
  will-change: transform;
}

.photography-masonry__item {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid transparent;
  background: transparent;
  cursor: default;
  transition:
    box-shadow var(--transition-base),
    border-color var(--transition-base),
    background var(--transition-base);
}

.photography-masonry__item.photography-reveal:not(.is-visible) {
  opacity: 0;
  transform: translate3d(0, var(--photography-reveal-rise), 0);
}

.photography-masonry__item.photography-reveal {
  transition:
    opacity var(--photography-reveal-duration) cubic-bezier(0.22, 1, 0.36, 1),
    transform var(--photography-reveal-duration) cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow var(--transition-base),
    border-color var(--transition-base),
    background var(--transition-base);
  transition-delay: var(--reveal-delay, 0ms), var(--reveal-delay, 0ms), 0ms, 0ms, 0ms;
  will-change: transform, opacity;
}

.photography-masonry__item.photography-reveal.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.photography-masonry__item.is-loaded {
  border-color: var(--glass-border);
  background: var(--glass-fill-card);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.06),
    0 8px 32px rgba(0, 0, 0, 0.28);
}

.photography-masonry__item.is-loaded:hover {
  border-color: rgba(var(--accent-rgb), 0.28);
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.35),
    0 0 0 1px rgba(var(--accent-rgb), 0.18),
    0 0 20px rgba(var(--accent-rgb), 0.12);
}

.photography-masonry__item.is-loaded:hover img {
  transform: scale(1.01);
}

.photography-masonry__item img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform var(--transition-base);
}

.photography-masonry__item picture {
  display: block;
}

.photography-page__error {
  font-family: "Inter", sans-serif;
  font-size: var(--text-base);
  color: var(--text-muted);
  text-align: center;
  padding: var(--space-lg);
}

/* ---- Responsive ---- */

@media (max-width: 767px) {
  .photography-card-grid {
    grid-template-columns: minmax(0, var(--photography-card-max-width));
    justify-content: center;
    justify-items: center;
    margin-inline: auto;
  }
}

@media (min-width: 768px) and (max-width: 991px) {
  .photography-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    justify-items: center;
  }

  .photography-card-grid .cert-card {
    width: 100%;
    max-width: var(--photography-card-max-width);
  }

  .photography-card-grid .cert-card:last-child {
    grid-column: 1 / -1;
    max-width: var(--photography-card-max-width);
    justify-self: center;
  }
}

@media (max-width: 575px) {
  .photography-page {
    --photography-headline-lift-by: 0.42em;
    --photography-headline-lift-niloy: 0.68em;
  }

  .photography-page__stage {
    padding-top: var(--photography-nav-offset);
    padding-bottom: 0;
  }

  .photography-page__headline {
    flex-wrap: wrap;
    max-width: 100%;
  }

  .photography-page__gallery {
    margin-top: var(--space-sm);
  }
}

/* Desktop overlap: hero + gallery share one grid row */
@media (min-width: 992px) {
  .photography-page__stage-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    isolation: isolate;
  }

  .photography-page__hero {
    grid-column: 1;
    grid-row: 1;
    align-self: start;
    z-index: 1;
    pointer-events: none;
  }

  .photography-page__headline {
    min-height: calc(1.12em + var(--photography-headline-lift-niloy));
    transform: translateY(var(--photography-headline-shift));
  }

  .photography-page__headline-word--niloy {
    transform: translateY(var(--photography-headline-niloy-extra));
  }

  .photography-page__gallery {
    grid-column: 1;
    grid-row: 1;
    align-self: start;
    margin-top: clamp(3.5rem, 8vw, 5.5rem);
  }

  .photography-masonry__col:nth-child(1) {
    margin-top: var(--photography-col-stagger-1);
  }

  .photography-masonry__col:nth-child(2) {
    margin-top: var(--photography-col-stagger-2);
  }

  .photography-masonry__col:nth-child(3) {
    margin-top: var(--photography-col-stagger-3);
  }
}

@media (min-width: 992px) and (max-width: 1199px) {
  .photography-page {
    --photography-col-stagger-1: clamp(3rem, 8vw, 5rem);
    --photography-col-stagger-2: clamp(0.75rem, 2vw, 1.25rem);
  }
}

/* ---- Reduced motion ---- */

@media (prefers-reduced-motion: reduce) {
  .photography-masonry--parallax .photography-masonry__col {
    transform: none !important;
    will-change: auto;
  }

  .photography-masonry__item.photography-reveal {
    opacity: 1;
    transform: none;
    transition:
      border-color var(--transition-fast),
      box-shadow var(--transition-fast),
      background var(--transition-fast);
    will-change: auto;
  }

  .photography-masonry__item {
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  }

  .photography-masonry__item.is-loaded:hover img {
    transform: none;
  }
}