:root {
  --bg: #ffffff;
  --text: #111111;        /* near-black: headings, name */
  --text-muted: #4a4a4a;  /* dark grey: body copy */
  --text-soft: #777777;   /* lighter grey: captions, labels */
  --line: #e6e6e6;
  --placeholder: #f2f2f2;
  --sidebar-width: 260px;
  --gutter: 48px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text-muted);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.layout {
  display: flex;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */

.sidebar {
  position: sticky;
  top: 0;
  align-self: flex-start;
  flex: 0 0 var(--sidebar-width);
  height: 100vh;
  padding: var(--gutter) 32px var(--gutter) var(--gutter);
  display: flex;
  flex-direction: column;
}

.site-name {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--text);
}

.tagline {
  margin: 6px 0 40px;
  font-size: 0.85rem;
  color: var(--text-soft);
}

.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: -20px 0 36px;
}

.pill-link {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--text);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  transition: background 0.15s ease, color 0.15s ease;
}

.pill-link:hover { background: var(--text); color: #fff; }
.pill-link[hidden] { display: none; }

.project-menu {
  list-style: none;
  margin: 0;
  padding: 0;
}

.project-menu li + li { margin-top: 10px; }

.project-menu a {
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color 0.15s ease;
}

.project-menu a:hover,
.project-menu a.active {
  color: var(--text);
  font-weight: 600;
}

.sidebar-footer {
  margin-top: auto;
  font-size: 0.85rem;
  color: var(--text-soft);
}

.sidebar-footer a:hover { color: var(--text); }

/* ---------- Main content ---------- */

.content {
  flex: 1;
  min-width: 0;
  padding: var(--gutter) var(--gutter) var(--gutter) 0;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 40px 32px;
}

.project-card { display: block; }

.image-frame {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--placeholder);
}

.image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease, opacity 0.2s ease;
}

.project-card:hover .image-frame img {
  transform: scale(1.03);
}

.image-frame.is-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
}

.placeholder-label {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
}

.card-meta { padding-top: 14px; }

.card-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.card-summary {
  margin: 4px 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ---------- Project detail ---------- */

.project-detail { max-width: 880px; }

.back-link {
  display: inline-block;
  margin-bottom: 24px;
  font-size: 0.85rem;
  color: var(--text-soft);
}

.back-link:hover { color: var(--text); }

.detail-title {
  margin: 0 0 12px;
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--text);
}

.tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 28px;
  padding: 0;
}

.tags li {
  font-size: 0.78rem;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-muted);
}

.detail-hero {
  aspect-ratio: 16 / 9;
  margin-bottom: 32px;
}

.detail-body {
  max-width: 680px;
  font-size: 1.02rem;
}

.detail-body p { margin: 0 0 1.1em; }

.detail-links {
  display: flex;
  gap: 24px;
  margin: 8px 0 40px;
}

.detail-links a {
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--text);
}

/* ---------- Project story ---------- */

.story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px 20px;
  align-items: start;
  margin-top: 16px;
}

.story-photo { margin: 0; }
.story-photo.full,
.story-text { grid-column: 1 / -1; }

.story-photo img {
  display: block;
  width: 100%;
  height: auto;
  cursor: zoom-in;
  background: var(--placeholder);
}

.story-photo.full img {
  width: auto;
  max-width: 100%;
  max-height: 80vh;
  margin: 0 auto;
  background: none;
}

.story-photo.full figcaption { text-align: center; }

.story-photo figcaption {
  margin-top: 10px;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-muted);
}

.story-text {
  max-width: 680px;
  font-size: 1.02rem;
  padding: 8px 0;
}

.story-text p { margin: 0 0 1.1em; }
.story-text p:last-child { margin-bottom: 0; }

/* ---------- Lightbox ---------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.97);
  padding: 48px 72px;
}

.lightbox.open { display: flex; }

.lightbox figure {
  margin: 0;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox img {
  max-width: 100%;
  max-height: calc(100vh - 150px);
  object-fit: contain;
}

.lightbox figcaption {
  margin-top: 14px;
  max-width: 680px;
  text-align: center;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.lightbox button {
  position: absolute;
  border: 0;
  background: none;
  color: var(--text);
  font: inherit;
  font-size: 2.4rem;
  line-height: 1;
  padding: 12px;
  cursor: pointer;
}

.lb-close { top: 12px; right: 16px; }
.lb-prev { left: 12px; top: 50%; transform: translateY(-50%); }
.lb-next { right: 12px; top: 50%; transform: translateY(-50%); }
.lightbox.single .lb-prev,
.lightbox.single .lb-next { display: none; }

/* ---------- Preview banner ---------- */

.preview-banner {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  justify-content: center;
  gap: 16px;
  padding: 8px 16px;
  background: var(--text);
  color: #fff;
  font-size: 0.85rem;
}

.preview-banner a { text-decoration: underline; }

/* ---------- Mobile ---------- */

@media (max-width: 800px) {
  :root { --gutter: 20px; }

  .layout { flex-direction: column; }

  .sidebar {
    position: static;
    flex: none;
    height: auto;
    padding: 28px var(--gutter) 8px;
  }

  .tagline { margin-bottom: 18px; }
  .profile-links { margin: -6px 0 18px; }

  .project-menu {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 18px;
  }

  .project-menu li + li { margin-top: 0; }

  .sidebar-footer { display: none; }

  .content { padding: 24px var(--gutter) 40px; }

  .project-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .detail-title { font-size: 1.7rem; }

  .story { grid-template-columns: 1fr; gap: 28px; }

  .lightbox { padding: 48px 8px; }
  .lb-prev, .lb-next { top: auto; bottom: 8px; transform: none; }
}