/* mather.host — shared site styles */

:root {
  --bg: #f5f4ef;
  --bg-raised: #ffffff;
  --bg-sunk: #ebe9e1;
  --fg: #1b1c1a;
  --fg-muted: #5d5f58;
  --fg-faint: #8a8c84;
  --line: #d9d7cd;
  --accent: #1f7a5c;        /* solder-mask green */
  --accent-strong: #145c44;
  --accent-soft: #dcefe6;
  --copper: #b8732e;        /* copper trace */
  --copper-soft: #f4e4d2;
  --code-bg: #10231c;
  --code-fg: #b8f0c8;
  --shadow: 0 1px 2px rgb(0 0 0 / 0.05), 0 4px 16px rgb(0 0 0 / 0.05);
  --radius: 12px;
  --maxw: 72rem;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1412;
    --bg-raised: #161d1a;
    --bg-sunk: #0b0f0d;
    --fg: #e7ebe6;
    --fg-muted: #a3aba4;
    --fg-faint: #6f7871;
    --line: #26302b;
    --accent: #4cc293;
    --accent-strong: #7fdcb4;
    --accent-soft: #15302a;
    --copper: #e0a165;
    --copper-soft: #33261a;
    --code-bg: #08110d;
    --code-fg: #9cf0b8;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.4), 0 6px 20px rgb(0 0 0 / 0.25);
    color-scheme: dark;
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { color: var(--accent-strong); }

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

code, kbd, pre { font-family: var(--font-mono); font-size: 0.92em; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }

.skip { position: absolute; left: -999px; top: 0; }
.skip:focus { left: 16px; top: 8px; background: var(--bg-raised); padding: 8px 12px; z-index: 10; }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 8px 24px;
  flex-wrap: wrap;
  padding-top: 12px;
  padding-bottom: 12px;
}

.brand {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--fg);
  text-decoration: none;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.5ch;
}
.brand:hover { color: var(--fg); }
.brand .prompt { color: var(--accent); }
.brand .tld { color: var(--copper); }
.brand .cursor {
  display: inline-block;
  width: 0.6ch;
  height: 1.05em;
  background: var(--accent);
  margin-left: 1px;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .brand .cursor { animation: none; } }

.site-nav {
  display: flex;
  gap: 2px;
  flex-wrap: wrap;
  margin-left: auto;
}
.site-nav a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 6px 10px;
  border-radius: 8px;
  white-space: nowrap;
}
.site-nav a:hover { color: var(--fg); background: var(--bg-sunk); }
.site-nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.site-nav .ext::after { content: " \2197"; font-size: 0.85em; }

@media (max-width: 719px) {
  .site-header .wrap { padding-top: 10px; padding-bottom: 6px; }
  .site-nav {
    margin-left: -10px; width: calc(100% + 10px);
    flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none;
    -webkit-overflow-scrolling: touch; padding-bottom: 4px;
  }
  .site-nav::-webkit-scrollbar { display: none; }
  .site-nav a { padding: 4px 10px; font-size: 0.9rem; flex: none; }
  .terminal { font-size: 0.74rem; }
  .terminal pre { padding: 12px 14px 14px; }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 60% 80% at 85% 10%, var(--accent-soft), transparent 70%),
    var(--bg);
}
.hero::before {
  /* faint PCB traces */
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.55;
  background-image: url("../img/traces.svg");
  background-size: 520px auto;
  background-position: right -60px top -40px;
  background-repeat: no-repeat;
  pointer-events: none;
}
@media (max-width: 719px) { .hero::before { opacity: 0.25; background-size: 360px auto; } }

.hero .wrap { position: relative; padding-top: 72px; padding-bottom: 64px; }
.hero.compact .wrap { padding-top: 48px; padding-bottom: 40px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--copper);
  letter-spacing: 0.02em;
  margin: 0 0 12px;
}

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
  max-width: 18ch;
}
.hero.compact h1 { font-size: clamp(2rem, 5vw, 2.9rem); max-width: none; }
.hero h1 em { font-style: normal; color: var(--accent); }

.lede {
  font-size: clamp(1.08rem, 2.2vw, 1.25rem);
  color: var(--fg-muted);
  max-width: 46rem;
  margin: 0;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.97rem;
  text-decoration: none;
  border: 1px solid var(--line);
  color: var(--fg);
  background: var(--bg-raised);
}
.btn:hover { color: var(--fg); border-color: var(--fg-faint); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); color: #fff; }
@media (prefers-color-scheme: dark) {
  .btn.primary, .btn.primary:hover { color: #06140e; }
}
.btn svg { width: 18px; height: 18px; flex: none; }

.hero-grid { display: grid; gap: 36px; align-items: center; }
@media (min-width: 1000px) {
  .hero-grid { grid-template-columns: 1.2fr 0.8fr; gap: 48px; }
  .hero-grid .terminal { margin-top: 0; }
}

/* Terminal snippet in the hero */
.terminal {
  margin-top: 36px;
  max-width: 34rem;
  background: var(--code-bg);
  color: var(--code-fg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.55;
  overflow: hidden;
}
.terminal .bar {
  display: flex; gap: 6px; padding: 10px 12px;
  background: rgb(255 255 255 / 0.04);
}
.terminal .bar i { width: 10px; height: 10px; border-radius: 50%; background: rgb(255 255 255 / 0.18); }
.terminal pre { margin: 0; padding: 14px 18px 18px; white-space: pre-wrap; word-break: break-word; }
.terminal .dim { color: #6fa585; }
.terminal .hl { color: #ffd38a; }

/* ---------- Sections ---------- */

main { flex: 1; }

.section { padding: 56px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.section-head h2 { margin: 0; font-size: clamp(1.45rem, 3vw, 1.85rem); letter-spacing: -0.015em; }
.section-head p { margin: 4px 0 0; color: var(--fg-muted); }
.section-head .more { font-size: 0.95rem; white-space: nowrap; }

.prose { max-width: 46rem; }
.prose h2 { font-size: 1.5rem; margin: 2em 0 0.5em; letter-spacing: -0.01em; }
.prose h3 { font-size: 1.15rem; margin: 1.6em 0 0.4em; }
.prose p, .prose ul { margin: 0 0 1em; }
.prose li + li { margin-top: 0.3em; }

/* ---------- Topic cards (home) ---------- */

.topics {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16.5rem, 1fr));
  gap: 16px;
}

.topic {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--fg);
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}
.topic:hover { color: var(--fg); border-color: var(--accent); box-shadow: var(--shadow); transform: translateY(-2px); }
@media (prefers-reduced-motion: reduce) { .topic, .topic:hover { transition: none; transform: none; } }

.topic .icon {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
}
.topic .icon svg { width: 24px; height: 24px; }
.topic h3 { margin: 4px 0 0; font-size: 1.15rem; }
.topic p { margin: 0; color: var(--fg-muted); font-size: 0.97rem; flex: 1; }
.topic .go { font-family: var(--font-mono); font-size: 0.85rem; color: var(--accent); }
.topic:hover .go { text-decoration: underline; }

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

.projects {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(19rem, 1fr));
  gap: 20px;
}
.projects.wide { grid-template-columns: 1fr; }

.project {
  display: flex;
  flex-direction: column;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.project .shot {
  aspect-ratio: 16 / 10;
  background: var(--bg-sunk);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.project .shot img { width: 100%; height: 100%; object-fit: cover; }
.project .shot.contain img { object-fit: contain; padding: 12px; }

.project .body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.project h3 { margin: 0; font-size: 1.2rem; letter-spacing: -0.01em; }
.project h3 a { color: inherit; text-decoration: none; }
.project h3 a:hover { color: var(--accent); }
.project p { margin: 0; color: var(--fg-muted); }
.project ul { margin: 0; padding-left: 1.15em; color: var(--fg-muted); font-size: 0.96rem; }
.project ul li + li { margin-top: 2px; }
.project .credit { font-size: 0.9rem; color: var(--fg-faint); }

.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.tags li {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--copper-soft);
  color: var(--copper);
  white-space: nowrap;
}
.tags li.green { background: var(--accent-soft); color: var(--accent); }

.links { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: auto; padding-top: 6px; font-size: 0.95rem; }
.links a { font-weight: 600; text-decoration: none; }
.links a:hover { text-decoration: underline; }

.meta {
  display: flex; flex-wrap: wrap; gap: 4px 14px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--fg-faint);
}
.meta:empty { display: none; }
.meta .star::before { content: "\2605 "; color: var(--copper); }

/* Feature (wide) project */
.project.feature { display: grid; grid-template-columns: 1fr; }
@media (min-width: 860px) {
  .project.feature { grid-template-columns: 1.1fr 1fr; }
  .project.feature .shot { aspect-ratio: auto; min-height: 100%; border-bottom: 0; border-right: 1px solid var(--line); }
}
.project.feature h3 { font-size: 1.45rem; }

/* ---------- Gallery ---------- */

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
  gap: 12px;
}
.gallery figure { margin: 0; background: var(--bg-raised); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--bg-sunk); }
.gallery figcaption { padding: 8px 12px; font-size: 0.88rem; color: var(--fg-muted); }

/* ---------- Activity list ---------- */

.activity { list-style: none; margin: 0; padding: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-raised); overflow: hidden; }
.activity li { display: grid; grid-template-columns: 1fr auto; gap: 2px 16px; padding: 14px 18px; }
.activity li + li { border-top: 1px solid var(--line); }
.activity a { font-weight: 600; text-decoration: none; font-family: var(--font-mono); font-size: 0.95rem; }
.activity a:hover { text-decoration: underline; }
.activity .when { font-family: var(--font-mono); font-size: 0.8rem; color: var(--fg-faint); white-space: nowrap; align-self: center; }
.activity .desc { grid-column: 1 / -1; color: var(--fg-muted); font-size: 0.93rem; }
@media (min-width: 720px) {
  .activity li { grid-template-columns: 14rem 1fr auto; align-items: baseline; }
  .activity .desc { grid-column: auto; }
}

/* ---------- Callouts ---------- */

.note {
  padding: 16px 20px;
  border-radius: var(--radius);
  background: var(--copper-soft);
  border: 1px solid color-mix(in srgb, var(--copper) 30%, transparent);
  color: var(--fg);
}
.note strong { color: var(--copper); }

.stats { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 28px; }
.stat b { display: block; font-family: var(--font-mono); font-size: 1.6rem; color: var(--fg); line-height: 1.2; }
.stat span { font-size: 0.9rem; color: var(--fg-muted); }

/* ---------- About ---------- */

.about { display: grid; gap: 28px; align-items: start; }
@media (min-width: 860px) { .about { grid-template-columns: 1fr 20rem; gap: 48px; } }

.facts {
  list-style: none; margin: 0; padding: 20px 22px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-raised); font-size: 0.95rem;
}
.facts li + li { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line); }
.facts b, .spec dt {
  display: block;
  font-family: var(--font-mono); font-size: 0.75rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.05em; color: var(--copper);
}

/* ---------- Specs, docs, two-column blocks ---------- */

.split { display: grid; gap: 28px; align-items: start; }
@media (min-width: 860px) { .split { grid-template-columns: 1.1fr 0.9fr; gap: 48px; } }

.spec {
  display: grid; grid-template-columns: max-content 1fr; gap: 10px 20px; margin: 0;
  padding: 20px 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-raised);
}
.spec dt { padding-top: 3px; }
.spec dd { margin: 0; }

.doclist { list-style: none; margin: 0; padding: 0; columns: 2 17rem; column-gap: 32px; }
.doclist li { break-inside: avoid; padding: 9px 0; border-bottom: 1px dashed var(--line); }
.doclist a { font-weight: 600; text-decoration: none; }
.doclist a:hover { text-decoration: underline; }
.doclist span { display: block; font-size: 0.88rem; color: var(--fg-muted); }

.photo { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg-sunk); }
.photo img { width: 100%; }
.photo figcaption { padding: 10px 14px; font-size: 0.88rem; color: var(--fg-muted); background: var(--bg-raised); border-top: 1px solid var(--line); }

.pixel img { image-rendering: pixelated; }

/* ---------- Footer ---------- */

.site-footer { border-top: 1px solid var(--line); padding: 28px 0 36px; color: var(--fg-faint); font-size: 0.9rem; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }
.site-footer a { color: var(--fg-muted); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 4px 16px; }