@import url('./tokens.css');

/* ── Header / Navigation ──────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0 24px;
}

[data-theme='light'] .header {
  background: rgba(250, 250, 250, 0.9);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: 0;
  max-width: var(--max-width);
  margin: 0 auto;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.header__nav::-webkit-scrollbar {
  display: none;
}

.header__nav-link {
  padding: 18px 16px;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: color var(--transition-fast);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--text-primary);
  border-bottom-color: var(--text-primary);
}

/* ── Main Content ─────────────────────────────────── */
.main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 96px;
}

/* Homepage hero + About page use full bleed — override main padding */
.main:has(.hero),
.main:has(.about) {
  max-width: none;
  padding: 0;
}

/* ── Hero Split Layout (Homepage) ────────────────── */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: calc(100vh - 56px);
}

.hero__left {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px 48px;
  background: var(--bg-primary);
}

.hero__content {
  text-align: center;
  max-width: 400px;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.hero__subtitle {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: lowercase;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 40px;
}

.hero__nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
}

.hero__nav-link {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(255, 255, 255, 0.2);
  transition:
    color var(--transition-fast),
    text-decoration-color var(--transition-fast);
  padding: 4px 0;
}

.hero__nav-link:hover {
  color: var(--text-primary);
  text-decoration-color: var(--text-primary);
}

.hero__right {
  position: relative;
  overflow: hidden;
}

.hero__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__image-placeholder {
  width: 100%;
  height: 100%;
  background: var(--bg-secondary);
}

/* ── Hero Carousel Crossfade ────────────────────── */
.hero__carousel-image {
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}

.hero__carousel-image--active {
  opacity: 1;
}

/* ── Section Labels ──────────────────────────────── */
.section-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-top: 48px;
  margin-bottom: 20px;
}

.section-label:first-child {
  margin-top: 0;
}

/* ── Subpage Album Grid (2-column, edge-to-edge) ─── */
.subpage-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px;
}

.subpage-grid__item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  cursor: pointer;
  display: block;
}

.subpage-grid__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition:
    transform var(--transition-slow),
    filter var(--transition-slow);
}

.subpage-grid__item:hover img {
  transform: scale(1.03);
  filter: brightness(0.75);
}

.subpage-grid__item-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.subpage-grid__item:hover .subpage-grid__item-overlay {
  opacity: 1;
}

.subpage-grid__item-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 0.03em;
}

.subpage-grid__item-count {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 300;
  margin-top: 2px;
}

/* ── Album Grid (Homepage) ────────────────────────── */
.album-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 20px;
}

.album-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  aspect-ratio: 3 / 2;
  cursor: pointer;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  transition:
    border-color var(--transition-normal),
    transform var(--transition-normal);
}

.album-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.album-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition:
    transform var(--transition-slow),
    filter var(--transition-slow);
}

.album-card:hover .album-card__image {
  transform: scale(1.03);
  filter: brightness(0.7);
}

.album-card__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  background: linear-gradient(to top,
      rgba(0, 0, 0, 0.8) 0%,
      rgba(0, 0, 0, 0.3) 40%,
      transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.album-card:hover .album-card__overlay {
  opacity: 1;
}

.album-card__title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  margin-bottom: 4px;
}

.album-card__count {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 300;
}

/* ── Photo Grid (Album Detail) ────────────────────── */
.album-header {
  margin-bottom: 40px;
}

.album-header__back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  transition: color var(--transition-fast);
}

.album-header__back:hover {
  color: var(--text-primary);
}

.album-header__back svg {
  width: 16px;
  height: 16px;
}

.album-header__title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.album-header__meta {
  margin-top: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 300;
}

.photo-grid {
  column-count: var(--grid-columns, 3);
  column-gap: var(--grid-gap, 12px);
}

/* Uniform layout: CSS Grid with fixed aspect ratio */
.photo-grid--uniform {
  display: grid;
  grid-template-columns: repeat(var(--grid-columns, 3), 1fr);
  gap: var(--grid-gap, 12px);
  column-count: unset;
}

.photo-grid__item {
  break-inside: avoid;
  margin-bottom: var(--grid-gap, 12px);
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  position: relative;
  aspect-ratio: var(--grid-aspect-ratio, 1);
}

.photo-grid--uniform .photo-grid__item {
  margin-bottom: 0;
}

.photo-grid__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition:
    filter var(--transition-normal),
    transform var(--transition-slow);
}

.photo-grid__item:hover img {
  filter: brightness(0.85);
  transform: scale(1.02);
}

/* EXIF hover overlay */
.photo-grid__item-exif {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px 10px 8px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: 2;
}

.photo-grid__item:hover .photo-grid__item-exif {
  opacity: 1;
}

/* ── Loading States ───────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg,
      var(--bg-card) 0%,
      var(--bg-card-hover) 50%,
      var(--bg-card) 100%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-shimmer {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

/* ── Fade-In Animations ────────────────────────────── */
.fade-in {
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in--up {
  transform: translateY(20px);
}

.fade-in--visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ── Custom Cursor (Photo Grid) ─────────────────── */
.photo-grid__item {
  cursor: crosshair;
}

/* ── Scroll-to-Top Button ────────────────────────── */
.scroll-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 90;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 1.1rem;
  font-weight: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition:
    opacity var(--transition-normal),
    transform var(--transition-normal),
    background var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast);
}

.scroll-to-top--visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.scroll-to-top:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

/* ── Theme Toggle ────────────────────────────────── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  margin-left: auto;
}

.theme-toggle:hover {
  color: var(--text-primary);
}

/* ── Footer ──────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 32px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.footer__name {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.footer__links {
  display: flex;
  gap: 12px;
  align-items: center;
}

.footer__link {
  color: var(--text-muted);
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
}

.footer__link:hover {
  color: var(--text-primary);
}

/* ── Image Count Badge (Subpage Covers) ─────────── */
.subpage-grid__item-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  font-family: var(--font-sans);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.85);
  pointer-events: none;
}

/* ── Error / Empty States ─────────────────────────── */
.empty-state {
  text-align: center;
  padding: 96px 24px;
}

.empty-state__icon {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.3;
}

.empty-state__text {
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 300;
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 1024px) {
  .photo-grid {
    --grid-columns: 2;
  }

  .album-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

@media (max-width: 640px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero__right {
    order: -1;
    max-height: 40vh;
  }

  .hero__left {
    padding: 40px 24px;
  }

  .hero__title {
    font-size: 2rem;
  }

  .photo-grid {
    --grid-columns: 1;
  }

  .album-grid {
    grid-template-columns: 1fr;
  }

  .subpage-grid {
    grid-template-columns: 1fr;
  }

  .main {
    padding: 24px 16px 64px;
  }

  .header__nav-link {
    padding: 14px 10px;
    font-size: 0.6rem;
  }

  .album-header__title {
    font-size: 1.8rem;
  }

  .album-card__overlay {
    opacity: 1;
  }

  .subpage-grid__item-overlay {
    opacity: 1;
  }
}