/* ============================================================
   Wanzhou (Cobb) Xiao — site styles
   No JS. Static HTML/CSS only.
   ============================================================ */

:root {
  --bg: #FAFAFA;
  --ink: #1A1A1A;
  --ink-2: #4a4a4a;
  --ink-3: #8a8a8a;
  --rule: #e6e6e6;
  --accent: #7A2A2E; /* oxblood, links only */
  --measure: 64ch;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
}

body {
  font-family: "Helvetica Neue", "Helvetica", "Arial", sans-serif;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern";
  font-kerning: normal;
}

/* Optional secondary serif for long-form prose */
.prose-serif {
  font-family: "Charter", "Georgia", "Times New Roman", serif;
  font-size: 16px;
  line-height: 1.7;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}
a:hover { color: var(--ink); border-bottom-color: var(--ink); }

/* a.plain — name, work titles, etc. — stays inky, underlines on hover */
a.plain {
  color: var(--ink);
  border-bottom: 0;
}
a.plain:hover {
  color: var(--accent);
  border-bottom: 0;
}

img { max-width: 100%; display: block; }

/* ---------- Page shell ---------- */
.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 28px 32px 64px;
}

@media (max-width: 768px) {
  .page { padding: 20px 20px 56px; }
  body { font-size: 15px; }
}

/* ---------- Top nav ---------- */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 56px;
}
.nav .name {
  font-size: 15px;
  font-weight: 400;
  color: var(--ink);
}
.nav ul {
  list-style: none;
  margin: 0; padding: 0;
  display: flex;
  gap: 22px;
}
.nav ul a {
  color: var(--ink);
  border-bottom: 0;
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}
.nav ul a:hover { color: var(--accent); }
.nav ul a[aria-current="page"] {
  color: var(--accent);
}

@media (max-width: 768px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-bottom: 40px;
  }
  .nav ul { gap: 16px; flex-wrap: wrap; }
}

/* ---------- Footer ---------- */
.footer {
  margin-top: 96px;
  padding-top: 20px;
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.footer a {
  color: var(--ink-3);
  border-bottom: 0;
}
.footer a:hover { color: var(--accent); }

@media (max-width: 768px) {
  .footer { margin-top: 64px; }
}

/* ---------- Captions / metadata ---------- */
.caption {
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ---------- Index page ---------- */
.index-profile {
  max-width: var(--measure);
  margin: 0 0 56px;
}
.index-profile p {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
}

.index-links {
  list-style: none;
  margin: 0; padding: 0;
}
.index-links li {
  padding: 14px 0;
  border-top: 1px solid var(--rule);
}
.index-links li:last-child { border-bottom: 1px solid var(--rule); }
.index-links a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  color: var(--ink);
  border-bottom: 0;
  font-size: 16px;
}
.index-links a:hover { color: var(--accent); }
.index-links .label-r {
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.index-links a:hover .label-r { color: var(--accent); }

/* ---------- Work index list ---------- */
.work-list {
  list-style: none;
  margin: 0; padding: 0;
}
.work-list li {
  padding: 18px 0;
  border-top: 1px solid var(--rule);
}
.work-list li:last-child { border-bottom: 1px solid var(--rule); }
.work-list a {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 24px;
  align-items: baseline;
  color: var(--ink);
  border-bottom: 0;
  font-size: 18px;
}
.work-list a .form {
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.work-list a .yr {
  font-size: 13px;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.work-list a:hover { color: var(--accent); }
.work-list a:hover .form,
.work-list a:hover .yr { color: var(--accent); }

@media (max-width: 768px) {
  .work-list a {
    grid-template-columns: 1fr auto;
    gap: 6px 16px;
  }
  .work-list a .form { grid-column: 1 / -1; order: 3; }
}

/* ---------- Work page ---------- */
.work-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 28px;
}
.work-head h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.005em;
}
.work-head .work-meta {
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-3);
  white-space: nowrap;
}

.stills {
  display: grid;
  gap: 12px;
  margin: 0 0 36px;
}
.stills.cols-1 { grid-template-columns: 1fr; }
.stills.cols-2 { grid-template-columns: 1fr 1fr; }
.stills.cols-3 { grid-template-columns: 1fr 1fr 1fr; }

.still {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #e2e2e2;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #6f6f6f;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@media (max-width: 768px) {
  .stills.cols-2,
  .stills.cols-3 { grid-template-columns: 1fr; }
}

.statement {
  max-width: var(--measure);
  font-family: "Charter", "Georgia", "Times New Roman", serif;
  font-size: 16px;
  line-height: 1.7;
  margin: 0 0 36px;
}
.statement p { margin: 0 0 1em; }
.statement p:last-child { margin-bottom: 0; }

.specs {
  margin: 0 0 28px;
  padding: 16px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 32px;
}
.specs dt {
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 2px;
}
.specs dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.45;
}

@media (max-width: 768px) {
  .specs { grid-template-columns: 1fr; }
}

.viewing {
  font-size: 14px;
  color: var(--ink-2);
}

.work-back {
  margin-top: 48px;
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}
.work-back a {
  color: var(--ink-3);
  border-bottom: 0;
}
.work-back a:hover { color: var(--accent); }

/* ---------- Vimeo embed ---------- */
.vimeo {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #1a1a1a;
  margin: 0 0 12px;
}
.vimeo iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

/* ---------- Writing ---------- */
.writing-piece {
  max-width: 64ch;
  margin: 0 auto 64px;
}
.writing-piece:last-child { margin-bottom: 0; }
.writing-piece h2 {
  font-size: 18px;
  font-weight: 500;
  margin: 0 0 4px;
  letter-spacing: -0.005em;
}
.writing-piece .piece-meta {
  font-size: 11px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 24px;
}
.writing-piece .body {
  font-family: "Charter", "Georgia", "Times New Roman", serif;
  font-size: 16px;
  line-height: 1.7;
}
.writing-piece .body p { margin: 0 0 1.1em; }
.writing-piece .body p:last-child { margin-bottom: 0; }
.writing-piece .body em.placeholder {
  color: var(--ink-3);
  font-style: italic;
}

.writing-divider {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 0 auto 64px;
  max-width: 64ch;
}

/* ---------- CV ---------- */
.cv-head {
  margin: 0 0 28px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  flex-wrap: wrap;
}
.cv-head h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 500;
}
.cv-head .download {
  font-size: 12px;
}

.cv {
  max-width: 720px;
}
.cv h2 {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
  margin: 32px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--rule);
}
.cv h2:first-of-type { margin-top: 0; }
.cv .entry {
  margin: 0 0 14px;
}
.cv .entry .row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 14px;
  align-items: baseline;
}
.cv .entry .where { color: var(--ink); }
.cv .entry .when {
  color: var(--ink-3);
  font-size: 12px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.cv .entry .role {
  font-size: 14px;
  color: var(--ink-2);
}
.cv .entry .note {
  font-size: 13px;
  color: var(--ink-2);
  margin-top: 2px;
}

@media (max-width: 768px) {
  .cv .entry .row { flex-direction: column; gap: 0; }
  .cv .entry .when { font-size: 11px; }
}