/* Terminal-inspired, but genuinely readable.
   Light mode is derived from prefers-color-scheme rather than a toggle: the
   point of the page is a systems dashboard, and a hand-maintained second
   palette is a design project nobody asked for. */

:root {
  color-scheme: light dark;

  --bg: #ffffff;
  --fg: #1f2328;
  --dim: #59636e;
  --rule: #d1d9e0;
  --card: #f6f8fa;
  --accent: #0969da;
  --good: #1a7f37;
  --bad: #cf222e;
  --tagbg: #eaeef2;
  --shadow: 0 1px 2px rgba(31, 35, 40, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --fg: #c9d1d9;
    --dim: #8b949e;
    --rule: #30363d;
    --card: #161b22;
    --accent: #58a6ff;
    --good: #3fb950;
    --bad: #f85149;
    --tagbg: #21262d;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 1rem 4rem;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
        "Liberation Mono", monospace;
  -webkit-font-smoothing: antialiased;
}

main, header.bar, footer {
  max-width: 54rem;
  margin: 0 auto;
}

/* --- chrome --- */

header.bar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0 0.75rem;
  border-bottom: 1px solid var(--rule);
  flex-wrap: wrap;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--fg);
}
.brand .dim { color: var(--accent); }

nav { display: flex; gap: 1rem; }

a { color: var(--accent); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }

.dim { color: var(--dim); }
.small { font-size: 0.85rem; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  color: var(--dim);
  font-size: 0.85rem;
}

/* --- sections --- */

.hero { padding: 2.5rem 0 1.5rem; }
.hero h1 {
  margin: 0;
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  letter-spacing: -0.02em;
}
.lede { margin: 0.35rem 0 0.5rem; color: var(--fg); }

.card {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 1.25rem 0;
  box-shadow: var(--shadow);
}

.card > h1, .card > h2 { margin-top: 0; letter-spacing: -0.01em; }
.card > h2 { font-size: 1.15rem; color: var(--fg); }

/* --- projects --- */

/* minmax(15rem,...) forces three cramped columns on a wide screen. Raising the
   floor to 18rem gives two roomy columns, which suits a project summary far
   better than three narrow ones. */
.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 0.75rem;
}

.project {
  display: block;
  padding: 1rem;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--bg);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.12s ease, transform 0.12s ease;
}
.project:hover, .project:focus-visible {
  border-color: var(--accent);
  transform: translateY(-1px);
  text-decoration: none;
}
.project h3 { margin: 0.35rem 0 0.4rem; font-size: 1rem; }
.project p { margin: 0 0 0.6rem; color: var(--dim); font-size: 0.9rem; }

.project-head {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--dim);
}
.project-org { color: var(--accent); font-weight: 700; }

.tags { display: flex; flex-wrap: wrap; gap: 0.3rem; }
.tag {
  background: var(--tagbg);
  color: var(--dim);
  border-radius: 3px;
  padding: 0.1rem 0.4rem;
  font-size: 0.75rem;
}

.project-page .back { display: inline-block; margin-bottom: 1rem; }
.project-page .role { color: var(--dim); margin: 0 0 0.75rem; }

/* --- prose (rendered markdown) --- */

.prose h1, .prose h2, .prose h3 { letter-spacing: -0.01em; }
.prose h2 { margin-top: 2rem; font-size: 1.1rem; }
.prose h3 { margin-top: 1.5rem; font-size: 1rem; color: var(--dim); }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin: 0.3rem 0; }
.prose code {
  background: var(--tagbg);
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
  font-size: 0.9em;
}
.prose pre {
  background: var(--tagbg);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 0.9rem 1rem;
  overflow-x: auto;
}
.prose pre code { background: none; padding: 0; }
.prose blockquote {
  margin: 1rem 0;
  padding-left: 1rem;
  border-left: 3px solid var(--rule);
  color: var(--dim);
}
.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 2rem 0; }

/* --- live stats --- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  gap: 0.75rem;
  margin: 1rem 0;
}

.stat {
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 0.8rem 0.9rem;
  background: var(--bg);
}
.stat-label { font-size: 0.75rem; color: var(--dim); text-transform: uppercase; letter-spacing: 0.05em; }
/* stat-value is a sibling of .lede, and .lede is italic. The value must not
   inherit that, or the number renders in italic and looks like a font bug. */
.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  font-style: normal;
  margin-top: 0.2rem;
  font-variant-numeric: tabular-nums;
}
.stat-sub { font-size: 0.75rem; color: var(--dim); }

.stat-value.ok { color: var(--good); }
.stat-value.over { color: var(--bad); }

.chart-wrap {
  margin-top: 1rem;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--bg);
  padding: 0.5rem;
}
#chart { display: block; width: 100%; height: 120px; }
#chart .bar { fill: var(--accent); }
#chart .over { fill: var(--bad); }
#chart .budget { stroke: var(--bad); stroke-width: 1; stroke-dasharray: 3 3; }

/* --- prose lists in the "how this is built" card --- */

ul.plain { padding-left: 1.2rem; }
ul.plain li { margin: 0.35rem 0; }
ul.plain code {
  background: var(--tagbg);
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}