/* Minimal, responsive portfolio styles with a masonry grid and accessible lightbox */

:root {
  --bg: #ffffff;
  --text: #1b1b1b;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #111827;
  --link: #111827;
  --wrap: 1080px;
  --gap: 1rem;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 1rem;
}

.wrap.narrow { max-width: 760px; }

.visually-hidden {
  position: absolute !important;
  height: 1px; width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap;
}

.site-header {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.9);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-weight: 600;
  text-decoration: none;
  color: inherit;
}

.brand-mark { font-size: 1.25rem; }
.brand-text {
  letter-spacing: .5px;
  font-size: 2rem;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--border);
  background: #fff;
  padding: .4rem .6rem;
  border-radius: 6px;
}

.site-nav {
  display: flex;
  gap: 1rem;
}

.site-nav .nav-link {
  text-decoration: none;
  color: var(--link);
  padding: .4rem .2rem;
  border-radius: 4px;
}

.site-nav .nav-link:focus-visible { outline: 2px solid #000; outline-offset: 2px; }

@media (max-width: 760px) {
  .nav-toggle { display: inline-block; }
  .site-nav {
    position: absolute;
    left: 0; right: 0;
    top: 56px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: .5rem 1rem 1rem;
    display: none;
    flex-direction: column;
    gap: .25rem;
  }
  .site-nav.open { display: flex; }
}

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 2rem 0;
  color: var(--muted);
  font-size: .95rem;
}

/* Intro */
.gallery-intro { color: var(--muted); margin: 1rem 0 0.5rem; }

/* Masonry using CSS columns */
.masonry {
  column-gap: var(--gap);
  column-fill: balance;
  /* default columns; will be overridden by media queries */
  column-count: 3;
  margin-top: 1rem;
}
@media (max-width: 1024px) { .masonry { column-count: 2; } }
@media (max-width: 640px)  { .masonry { column-count: 1; } }

.gallery-empty {
  text-align: center;
  color: var(--muted);
  padding: 2rem 0;
}

.card {
  break-inside: avoid;
  margin-bottom: var(--gap);
  display: block;
  text-decoration: none;
  color: inherit;
}

.card figure { margin: 0; }
.card img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #f8f8f8;
}

.figcaption {
  font-size: .95rem;
  color: var(--muted);
  margin-top: .35rem;
}

/* Buttons & forms */
.btn {
  display: inline-block;
  border: 1px solid var(--border);
  padding: .6rem 1rem;
  border-radius: 8px;
  background: #111827;
  color: #fff;
  text-decoration: none;
  cursor: pointer;
}
.btn:focus-visible { outline: 2px solid #000; outline-offset: 2px; }

.newsletter-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .75rem;
  align-items: center;
}
.newsletter-form label {
  grid-column: 1 / -1;
  font-weight: 600;
}
.newsletter-form input[type="email"] {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .6rem .75rem;
  font: inherit;
}
.newsletter-form .disclaimer {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: .95rem;
}

/* About page */
.about-portrait {
  margin: 1rem 0 2rem;
}
.about-portrait img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
}

/* Lightbox */
.lightbox-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.lightbox-backdrop.open { display: flex; }
.lightbox-dialog {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  background: #000;
  border-radius: 10px;
  overflow: hidden;
}
.lightbox-dialog img {
  display: block;
  max-width: 90vw;
  max-height: 90vh;
}
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: absolute;
  top: .5rem;
  border: none;
  background: rgba(255,255,255,0.9);
  padding: .4rem .6rem;
  border-radius: 8px;
  cursor: pointer;
}
.lightbox-close { right: .5rem; }
.lightbox-prev { left: .5rem; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: .5rem; top: 50%; transform: translateY(-50%); }
.lightbox-close:focus-visible, .lightbox-prev:focus-visible, .lightbox-next:focus-visible {
  outline: 2px solid #000;
  outline-offset: 2px;
}