:root {
  --bg: #0b0b0c;
  --fg: #e8e8e6;
  --muted: #8a8a8e;
  --border: #232326;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafafa;
    --fg: #17171a;
    --muted: #6b6b70;
    --border: #e4e4e6;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}

a { color: inherit; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 1.5rem 1rem;
}

.site-title {
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  gap: 1.25rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--fg);
}

main { padding: 0 0.75rem; }

.empty {
  padding: 3rem 1.5rem;
  color: var(--muted);
}

/* Masonry-style grid via CSS columns, preserves each photo's aspect ratio */
.grid {
  column-count: 1;
  column-gap: 0.5rem;
  padding-bottom: 1rem;
}

@media (min-width: 640px) {
  .grid { column-count: 2; }
}

@media (min-width: 1000px) {
  .grid { column-count: 3; }
}

@media (min-width: 1500px) {
  .grid { column-count: 4; }
}

.grid-item {
  display: block;
  break-inside: avoid;
  margin-bottom: 0.5rem;
  border-radius: 4px;
  overflow: hidden;
}

.grid-item picture {
  display: block;
  width: 100%;
}

.grid-item img {
  display: block;
  width: 100%;
  height: auto;
  transition: opacity 0.15s ease;
}

.grid-item:hover img { opacity: 0.9; }

/* Single photo page */
.photo {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 0.75rem 3rem;
}

.photo .back {
  display: inline-block;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  margin: 0.5rem 0 1rem;
}

.photo picture {
  display: block;
}

.photo img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
}

.photo .caption {
  margin: 0.75rem 0 0;
  font-size: 1rem;
  line-height: 1.5;
}

.photo .meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.photo time { color: var(--fg); }

.exif {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin: 0;
}

.exif dt {
  display: inline;
  color: var(--muted);
  font-weight: 400;
}

.exif dt::after { content: ": "; }

.exif dd {
  display: inline;
  margin: 0;
  color: var(--fg);
}

.exif dt, .exif dd {
  display: inline-block;
}

.photo-nav {
  display: flex;
  justify-content: space-between;
  padding-top: 1rem;
  font-size: 0.9rem;
}

.photo-nav a { text-decoration: none; color: var(--muted); }
.photo-nav a:hover { color: var(--fg); }

.site-footer {
  padding: 2rem 1.5rem;
  color: var(--muted);
  font-size: 0.8rem;
}

/* About page */
.about {
  max-width: 640px;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
}

.about-photo {
  display: block;
  width: 100%;
  max-width: 220px;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
}

.about h1 {
  margin: 0 0 0.25rem;
  font-size: 1.4rem;
}

.about .tagline {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.about .bio p {
  line-height: 1.6;
  margin: 0 0 1rem;
}

.about-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 1.5rem 0 0;
  padding: 0;
}

.about-links a {
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}