/* basit.engineer — shared stylesheet for index.html and work/*.html */

:root {
  --bg: #fcfbf9;
  --surface: #f4f1ec;
  --ink: #1a1a18;
  --ink-2: #4a4843;
  --ink-3: #6d6961;
  --rule: #e2ddd4;
  --rule-strong: #cfc8bc;
  --accent: #92451c;
  --accent-quiet: #f0e6dd;
  --good: #2f5d3a;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;
  --measure: 68ch;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121213;
    --surface: #1a1a1c;
    --ink: #ecebe7;
    --ink-2: #b8b4ac;
    --ink-3: #8c887f;
    --rule: #2b2b2e;
    --rule-strong: #3d3d41;
    --accent: #dc8f5f;
    --accent-quiet: #2a211b;
    --good: #7fb98c;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0 1.5rem;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  max-width: 47rem;
  margin: 0 auto;
  padding: 4.5rem 0 5rem;
}

/* ---------- links ---------- */

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent);
  transition: text-decoration-color 0.15s ease, color 0.15s ease;
}

a:hover {
  text-decoration-color: var(--accent);
}

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

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 10;
  padding: 0.5rem 0.9rem;
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
}

/* ---------- typography ---------- */

h1 {
  font-size: 1.9rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 0.35rem;
  text-wrap: balance;
}

h2 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0 0 1.25rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--rule);
}

h3 {
  font-size: 1.12rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 2.4rem 0 0.7rem;
  text-wrap: balance;
}

p {
  margin: 0 0 1.15rem;
  max-width: var(--measure);
}

.lede {
  font-size: 1.06rem;
  color: var(--ink-2);
}

.tagline {
  font-size: 1.06rem;
  color: var(--ink-2);
  margin: 0 0 2rem;
  max-width: var(--measure);
}

.meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-3);
  letter-spacing: 0.01em;
}

section {
  margin: 3.5rem 0 0;
}

strong {
  font-weight: 650;
  color: var(--ink);
}

code,
.mono {
  font-family: var(--font-mono);
  font-size: 0.88em;
  font-variant-numeric: tabular-nums;
}

code {
  background: var(--surface);
  padding: 0.1em 0.35em;
  border-radius: 3px;
  border: 1px solid var(--rule);
  overflow-wrap: break-word;
}

/* ---------- metric rows (the three numbers) ---------- */

.metrics {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.metrics li {
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--rule);
}

.figure {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.16rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  display: block;
  margin-bottom: 0.25rem;
}

.figure .from {
  color: var(--ink-3);
  font-weight: 400;
}

.figure .arrow {
  color: var(--accent);
  padding: 0 0.4em;
  font-weight: 400;
}

.metrics p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-2);
}

/* ---------- project / work rows ---------- */

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

.rows > li {
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--rule);
}

.rows > li:first-child {
  border-top: 1px solid var(--rule);
}

.name {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.rows p {
  margin: 0.3rem 0 0;
  font-size: 0.95rem;
  color: var(--ink-2);
  max-width: var(--measure);
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-3);
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  padding: 0.1rem 0.38rem;
  margin-left: 0.5rem;
  vertical-align: 0.12em;
  white-space: nowrap;
}

.links {
  margin-top: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
}

/* ---------- callout: the tradeoff / the caveat ---------- */

.note {
  border-left: 2px solid var(--accent);
  background: var(--accent-quiet);
  padding: 0.9rem 1.1rem;
  margin: 1.6rem 0;
  border-radius: 0 3px 3px 0;
}

.note p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-2);
}

.note p + p {
  margin-top: 0.7rem;
}

/* ---------- tables ---------- */

.scroll {
  overflow-x: auto;
  margin: 1.4rem 0;
  border: 1px solid var(--rule);
  border-radius: 3px;
}

table {
  border-collapse: collapse;
  width: 100%;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.82rem;
  white-space: nowrap;
}

caption {
  caption-side: bottom;
  text-align: left;
  font-size: 0.82rem;
  font-family: var(--font-sans);
  color: var(--ink-3);
  padding: 0.7rem 0.9rem;
  border-top: 1px solid var(--rule);
  white-space: normal;
}

th,
td {
  text-align: left;
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--rule);
}

thead th {
  font-weight: 600;
  color: var(--ink-3);
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  background: var(--surface);
}

tbody tr:last-child td {
  border-bottom: 0;
}

td.num {
  text-align: right;
}

/* Hardware qualifier under a row label. The before and after columns of the
   inference table are not the same machine, so each row names its GPU rather
   than leaving the reader to assume the hardware was held constant. */
th .sub {
  display: block;
  margin-top: 0.15rem;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  text-transform: none;
  color: var(--ink-3);
}

/* ---------- case-study page furniture ---------- */

.back {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  display: inline-block;
  margin-bottom: 2.2rem;
}

.step {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.45rem;
}

.case section {
  margin-top: 3.2rem;
}

.case section > h2 {
  font-family: var(--font-sans);
  font-size: 1.3rem;
  font-weight: 650;
  letter-spacing: -0.015em;
  text-transform: none;
  color: var(--ink);
  border-bottom: 0;
  padding-bottom: 0;
  margin: 0 0 0.9rem;
  text-wrap: balance;
}

ul.plain {
  padding-left: 1.15rem;
  margin: 0 0 1.15rem;
  max-width: var(--measure);
}

ul.plain li {
  margin-bottom: 0.5rem;
}

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

footer {
  margin-top: 4.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}

.contact {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  margin: 0 0 1rem;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

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

@media (max-width: 34rem) {
  body {
    font-size: 16px;
    padding: 0 1.15rem;
  }

  .wrap {
    padding: 2.75rem 0 3.5rem;
  }

  h1 {
    font-size: 1.6rem;
  }

  .figure {
    font-size: 1.05rem;
  }

  .tag {
    margin-left: 0;
    display: inline-block;
    margin-top: 0.3rem;
  }
}

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

@media print {
  body {
    background: #fff;
    color: #000;
    font-size: 11pt;
  }

  a {
    color: #000;
  }

  .skip,
  .back {
    display: none;
  }
}