/* ---------- Tokens ---------- */
:root {
  --bg: #fafaf8;
  --surface: #ffffff;
  --text: #141414;
  --muted: #6a6a6a;
  --border: #e6e4de;
  --accent: #b84c00;
  --accent-hover: #8e3a00;
  --code-bg: #f1efe9;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --max: 680px;
  --max-wide: 920px;
  --radius: 4px;
}

html[data-theme="dark"],
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f0f10;
    --surface: #17171a;
    --text: #e8e6e1;
    --muted: #9a9894;
    --border: #2a2a2e;
    --accent: #f08a50;
    --accent-hover: #ffa977;
    --code-bg: #1e1e22;
  }
}

html[data-theme="dark"] {
  --bg: #0f0f10;
  --surface: #17171a;
  --text: #e8e6e1;
  --muted: #9a9894;
  --border: #2a2a2e;
  --accent: #f08a50;
  --accent-hover: #ffa977;
  --code-bg: #1e1e22;
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

body.wide .container { max-width: var(--max-wide); }

/* Always keep header/footer the same width as content. */
.site-header .container,
.site-footer .container { max-width: var(--max-wide); }

/* ---------- Typography ---------- */
h1, h2, h3 {
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
h1 { font-size: 2rem; margin: 0 0 0.6rem; }
h2 { font-size: 1.3rem; margin: 2.2rem 0 0.8rem; }
h3 { font-size: 1.05rem; margin: 1.4rem 0 0.5rem; }

p { margin: 0 0 1em; }

.subtitle { color: var(--muted); font-size: 1.1rem; margin-top: 0; }
.muted { color: var(--muted); }

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.12s, border-color 0.12s;
}
a:hover { color: var(--accent-hover); border-bottom-color: currentColor; }

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}
pre {
  background: var(--code-bg);
  padding: 1em;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 0.9rem;
}
pre code { background: transparent; padding: 0; }

blockquote {
  margin: 1em 0;
  padding: 0.2em 1em;
  border-left: 3px solid var(--border);
  color: var(--muted);
}

hr { border: 0; border-top: 1px solid var(--border); margin: 2em 0; }

/* ---------- Header / nav ---------- */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  margin-bottom: 48px;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  font-weight: 600;
  color: var(--text);
  font-size: 1rem;
  border-bottom: none;
}
.brand:hover { color: var(--accent); }

nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
nav a {
  color: var(--text);
  font-size: 0.95rem;
  border-bottom: none;
}
nav a:hover { color: var(--accent); }
nav a[aria-current="page"] { color: var(--accent); }

#theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 4px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
}
#theme-toggle:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 80px;
  padding: 24px 0 40px;
  font-size: 0.85rem;
  color: var(--muted);
}
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--accent); }

/* ---------- Home ---------- */
.home-header {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  align-items: start;
  margin-bottom: 32px;
}
.avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--border);
}
.home-header h1 { margin-bottom: 0.2rem; }
.home-header .links { margin: 0.6rem 0 0; font-size: 0.95rem; }

@media (max-width: 560px) {
  .home-header { grid-template-columns: 1fr; }
  .avatar { width: 96px; height: 96px; }
}

.prose p { margin-bottom: 1em; }

.home-news { margin-top: 3rem; }
.home-news p a { font-size: 0.95rem; }

/* ---------- Callout ---------- */
.callout {
  margin: 2rem 0 0;
  padding: 0.9rem 1.1rem;
  border-left: 3px solid var(--accent);
  background: var(--code-bg);
  border-radius: 3px;
  font-size: 0.95rem;
}
.callout strong { color: var(--accent); }
.callout code {
  background: transparent;
  padding: 0;
  font-weight: 600;
}

/* ---------- MCP page ---------- */
.mcp-info h1 {
  font-size: 2.6rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.2rem;
}
.mcp-info .subtitle {
  font-size: 1.2rem;
  margin-bottom: 1.8rem;
}
.mcp-info .lede {
  font-size: 1.05rem;
  line-height: 1.7;
}
.mcp-info .mcp-endpoint {
  margin: 1.6rem 0 0.6rem;
  padding: 1.2rem 1rem;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  text-align: center;
  word-break: break-all;
}
.mcp-info .mcp-endpoint code {
  background: transparent;
  padding: 0;
  font-size: 1.05rem;
  color: var(--accent);
  font-weight: 600;
}
.mcp-info .mcp-cta {
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 2.5rem;
}
.mcp-info pre {
  font-size: 0.85rem;
  line-height: 1.5;
}
.mcp-info h2 {
  margin-top: 2.8rem;
}
.mcp-info h3 {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 1.4rem;
  margin-bottom: 0.4rem;
}

.mcp-prompts {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}
.mcp-prompts li {
  padding: 0.7rem 1rem;
  margin-bottom: 0.5rem;
  border-left: 2px solid var(--border);
  background: var(--code-bg);
  border-radius: 2px;
  font-style: italic;
  color: var(--text);
  transition: border-color 0.15s;
}
.mcp-prompts li:hover {
  border-left-color: var(--accent);
}

.mcp-footnote {
  margin-top: 3rem;
  font-size: 0.85rem;
  text-align: center;
}

/* ---------- News list ---------- */
.news-list {
  list-style: none;
  padding: 0;
  margin: 1em 0 0;
}
.news-item {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 16px;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
}
.news-item:last-child { border-bottom: none; }
.news-item time {
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  font-size: 0.9rem;
  padding-top: 2px;
}
.news-body p { margin: 0; }

@media (max-width: 560px) {
  .news-item { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- CV ---------- */
.cv-header { margin-bottom: 32px; }
.cv-header .links { font-size: 0.95rem; }
.cv-section { margin-top: 2.4rem; }

.cv-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.cv-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 20px;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.cv-item:last-child { border-bottom: none; }
.cv-date {
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  font-size: 0.9rem;
  padding-top: 2px;
}
.cv-title { font-weight: 600; }
.cv-title .muted { font-weight: 400; }

.cv-bullets {
  margin: 0.4rem 0 0.2rem;
  padding-left: 1.2rem;
  color: var(--text);
}
.cv-bullets li {
  margin: 0.15rem 0;
  line-height: 1.5;
  font-size: 0.95rem;
}

@media (max-width: 560px) {
  .cv-item { grid-template-columns: 1fr; gap: 4px; }
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 0.5rem;
}
.chip {
  background: var(--code-bg);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 0.8rem;
}

/* ---------- Publications ---------- */
.pub-year h2 {
  font-size: 1.1rem;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.02em;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.3rem;
}
.pub-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
}
.pub {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.pub:last-child { border-bottom: none; }
.pub-abbr {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--accent);
  color: #fff;
  padding: 2px 6px;
  border-radius: 3px;
  margin-right: 8px;
  vertical-align: middle;
}
.pub-title { font-weight: 600; display: inline; }
.pub-meta { color: var(--muted); font-size: 0.95rem; margin-top: 0.2rem; }
.pub-links { font-size: 0.85rem; margin-top: 0.2rem; }

/* ---------- Entry lists (blog/projects) ---------- */
.entry-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.entry {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.entry:last-child { border-bottom: none; }
.entry a { border-bottom: none; }
.entry-title { font-weight: 600; font-size: 1.05rem; color: var(--text); }
.entry a:hover .entry-title { color: var(--accent); }
.entry time { display: inline-block; font-size: 0.85rem; margin-left: 8px; }