/* =========================================================
   Shun-Wei Wang — personal site
   Single dark theme, hand-written CSS. No build step.
   ========================================================= */

:root {
  --bg:      #0a0b0f;
  --card:    #101218;
  --card-hi: #13161e;
  --line:    #20242f;
  --line-hi: #2c4f49;
  --ink:     #e6e8ef;
  --dim:     #8b90a0;
  --accent:  #5eead4;
  --accent2: #818cf8;

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          "PingFang TC", "Noto Sans CJK TC", "Microsoft JhengHei", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
          "DejaVu Sans Mono", monospace;

  --wrap: 900px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ambient glow */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(900px 500px at 15% -10%, rgba(94,234,212,.10), transparent 60%),
    radial-gradient(700px 400px at 90% 5%,  rgba(129,140,248,.10), transparent 60%);
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 100px;
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- nav ---------- */

nav {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 20px 0;
  flex-wrap: wrap;
}

nav a {
  color: var(--dim);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 8px;
}

nav a:hover { color: var(--ink); background: var(--card); }

nav a[aria-current="page"] {
  color: var(--ink);
  background: var(--card);
  box-shadow: inset 0 0 0 1px var(--line);
}

nav .spacer { flex: 1; }

.lang {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--dim);
  padding: 7px 14px;
  border-radius: 8px;
  cursor: pointer;
}

.lang:hover { color: var(--accent); border-color: var(--line-hi); }

/* ---------- page head ---------- */

header { padding: 52px 0 8px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--dim);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 22px;
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(94,234,212,.15);
}

h1 {
  font-size: 52px;
  line-height: 1.05;
  margin: 0 0 6px;
  font-weight: 700;
  letter-spacing: -.03em;
  text-wrap: balance;
  background: linear-gradient(180deg, #fff, #9aa2b8);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.name-zh {
  font-size: 18px;
  color: var(--dim);
  margin: 0 0 16px;
  letter-spacing: .08em;
}

.role {
  font-size: 18px;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 18px;
}

.lede {
  font-size: 17px;
  color: var(--dim);
  margin: 0;
  max-width: 62ch;
  text-wrap: pretty;
}

.page-title {
  font-size: 40px;
  line-height: 1.1;
  margin: 0 0 10px;
  font-weight: 700;
  letter-spacing: -.02em;
}

/* ---------- actions ---------- */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  padding: 11px 20px;
  border-radius: 10px;
  border: 1px solid transparent;
}

.btn-primary { background: var(--accent); color: #06231f; }
.btn-primary:hover { background: #7ef0dc; }
.btn-ghost { border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--dim); background: var(--card); }

/* ---------- sections ---------- */

section { margin-top: 60px; }

h2 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--dim);
  margin: 0 0 22px;
}

.section-note {
  font-size: 14.5px;
  color: var(--dim);
  margin: -12px 0 22px;
  max-width: 62ch;
}

/* ---------- jobs ---------- */

.job {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

.job-when {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--dim);
  padding-top: 4px;
  font-variant-numeric: tabular-nums;
}

.job-title { margin: 0; font-size: 17px; font-weight: 600; }
.job-where { color: var(--accent2); font-weight: 500; }

.job-place {
  font-size: 13.5px;
  color: var(--dim);
  margin: 3px 0 0;
}

.job ul { margin: 12px 0 0; padding-left: 18px; color: var(--dim); }
.job li { margin: 6px 0; }

/* ---------- cards ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 14px;
}

/* two-up variant, so an even number of cards sits square */
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: linear-gradient(180deg, var(--card-hi), var(--card));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px;
  transition: transform .18s ease, border-color .18s ease;
}

.card:hover { transform: translateY(-3px); border-color: var(--line-hi); }

.card h3 { margin: 0; font-size: 17px; font-weight: 600; }
.card p  { margin: 0; color: var(--dim); font-size: 15px; }
.card .tags { margin-top: auto; }

.card-link {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  text-decoration: none;
}

.card-link:hover { text-decoration: underline; }

.tags { display: flex; flex-wrap: wrap; gap: 6px; }

.tag {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  background: rgba(94,234,212,.08);
  border: 1px solid rgba(94,234,212,.18);
  border-radius: 6px;
  padding: 2px 9px;
}

/* ---------- writing list ---------- */

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

.writing li {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 20px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
}

.writing time {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--dim);
  padding-top: 2px;
  font-variant-numeric: tabular-nums;
}

.writing a {
  text-decoration: none;
  font-size: 16px;
  border-bottom: 1px solid transparent;
}

.writing a:hover { color: var(--accent); border-color: var(--accent); }

@media (max-width: 640px) {
  .writing li { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- key/value rows ---------- */

.row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 14px 20px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.row b {
  font-size: 13px;
  font-weight: 600;
  color: var(--dim);
  letter-spacing: .04em;
  text-transform: uppercase;
  padding-top: 4px;
}

.chips { display: flex; flex-wrap: wrap; gap: 6px; }

.chip {
  font-size: 13.5px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 3px 11px;
}

.row-plain { color: var(--dim); padding-top: 3px; }

/* ---------- footer ---------- */

footer {
  margin-top: 70px;
  background: linear-gradient(180deg, var(--card-hi), var(--card));
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
}

footer h3 { margin: 0 0 8px; font-size: 22px; font-weight: 600; }
footer p  { margin: 0 0 20px; color: var(--dim); }
footer .actions { justify-content: center; margin-top: 0; }

.colophon {
  margin-top: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--dim);
}

/* ---------- responsive ---------- */

@media (max-width: 640px) {
  h1 { font-size: 36px; }
  .page-title { font-size: 30px; }
  .job { grid-template-columns: 1fr; gap: 6px; }
  .row { grid-template-columns: 1fr; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}

/* ---------- print: plain black on white ---------- */

@media print {
  body { background: #fff; color: #000; font-size: 11pt; line-height: 1.45; }
  body::before { display: none; }
  .wrap { max-width: none; padding: 0; }
  nav, footer, .actions, .badge, .colophon { display: none !important; }
  header { padding: 0; }
  h1 { font-size: 24pt; color: #000; background: none; -webkit-text-fill-color: #000; }
  .name-zh, .role, .lede { color: #000; }
  h2 { color: #000; border-bottom: 1px solid #999; padding-bottom: 4px; }
  section { margin-top: 22px; page-break-inside: avoid; }
  .job, .row { border-top: 1px solid #ccc; page-break-inside: avoid; }
  .job ul, .job-when, .job-place, .row-plain, .card p { color: #000; }
  .card { border: 1px solid #999; background: none; page-break-inside: avoid; }
  .tag, .chip { border: 1px solid #999; background: none; color: #000; }
  .card-link { color: #000; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 8pt; color: #555; }
}