/* Sapwood: sapwood.forgesworn.dev/about/
   The console's own aesthetic: near-black, one neon-green accent, JetBrains
   Mono throughout (matching the app's brand tokens in src/app.css). No
   JavaScript anywhere on this page; everything below is CSS-only. */

/* ---------- font (served from this domain, nothing third-party) ---------- */

@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/jetbrains-mono-latin.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}

/* ---------- tokens (from the app's src/app.css) ---------- */

:root {
  --bg: #050505;
  --surface: #0c0c0c;
  --raised: #131313;
  --hover: #1a1a1a;
  --line: #1e1e1e;
  --line-bright: #2a2a2a;

  --green: #00e87b;
  --green-dim: #00a858;
  --green-bright: #00ff88;
  --glow: 0 0 12px rgba(0, 232, 123, 0.3);

  --red: #ff4444;
  --amber: #ffaa00;

  --ink: #f0f0f0;
  --ink-dim: #b9b9b9;
  --ink-mute: #8f8f8f;

  --mono: "JetBrains Mono", "SF Mono", "Fira Code", ui-monospace, monospace;

  --measure: 68ch;
  --gutter: clamp(1.25rem, 4vw, 3rem);
}

/* ---------- base ---------- */

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 1rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  position: relative;
}

/* faint scanlines, atmosphere only */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(0deg,
    transparent 0 3px,
    rgba(0, 232, 123, 0.008) 3px 4px);
  z-index: 0;
}

main, header, footer { position: relative; z-index: 1; }

::selection { background: var(--green); color: #050505; }

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--green-dim);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  transition: color 120ms ease, text-decoration-color 120ms ease;
}
a:hover { color: var(--green); text-decoration-color: var(--green); }

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

code {
  font-size: 0.9em;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.1em 0.4em;
}

.green { color: var(--green); }
.mono-label { letter-spacing: 0.14em; }

/* ---------- masthead ---------- */

.masthead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.4rem var(--gutter);
  border-bottom: 1px solid var(--line);
}

.wordmark {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.42em;
  text-decoration: none;
  color: var(--ink);
}
.wordmark:hover { color: var(--green); }
.wordmark .cursor {
  color: var(--green);
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.mastnav {
  display: flex;
  gap: clamp(0.9rem, 2.5vw, 1.6rem);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
}
.mastnav a { text-decoration: none; color: var(--ink-dim); }
.mastnav a:hover { color: var(--green); }
.mastnav .ext::after { content: " ↗"; color: var(--ink-mute); }

/* ---------- hero ---------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(4rem, 10vh, 7rem) var(--gutter) clamp(3rem, 8vh, 6rem);
}

.kicker {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 1.4rem;
}

.hero h1 {
  font-weight: 700;
  font-size: clamp(2.4rem, 5.4vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 1.6rem;
  text-wrap: balance;
}

.lede {
  max-width: 56ch;
  color: var(--ink-dim);
  font-size: 0.98rem;
  margin-bottom: 2.2rem;
}
.lede a { color: var(--ink); }

.cta-row { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-bottom: 1.6rem; }

.btn {
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-decoration: none;
  padding: 0.85rem 1.4rem;
  border-radius: 6px;
  border: 1px solid transparent;
  transition: background 120ms ease, border-color 120ms ease,
    color 120ms ease, box-shadow 120ms ease;
}
.btn-primary {
  background: var(--green);
  color: #050505;
  font-weight: 700;
}
.btn-primary:hover { background: var(--green-bright); box-shadow: var(--glow); }
.btn-ghost {
  border-color: var(--line-bright);
  color: var(--ink-dim);
}
.btn-ghost:hover { border-color: var(--green-dim); color: var(--green); }

.hero-meta {
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
}

/* ---------- the terminal ---------- */

.term {
  background: var(--surface);
  border: 1px solid var(--line-bright);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 0 32px rgba(0, 232, 123, 0.05);
}
.term-bar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.65rem 0.9rem;
  background: var(--raised);
  border-bottom: 1px solid var(--line);
}
.term-bar .dot {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 50%;
  background: var(--line-bright);
}
.term-title {
  margin-left: 0.4rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
}
.term-body {
  padding: 1.1rem 1.2rem 1.3rem;
  font-size: clamp(0.68rem, 1.6vw, 0.84rem);
  line-height: 1.85;
  overflow-x: auto;
  color: var(--ink-dim);
}
.term-body code { background: none; border: none; padding: 0; font-size: inherit; }
.term-body .p { color: var(--green); font-weight: 700; }
.term-body .ok { color: var(--green); }
.term-body .warn { color: var(--amber); }
.term-body .err { color: var(--red); }
.term-body .dim { color: var(--ink-mute); }

/* ---------- entrance motion (CSS only) ---------- */

@keyframes rise { from { opacity: 0; transform: translateY(14px); } }

.reveal { animation: rise 0.7s cubic-bezier(0.2, 0.6, 0.2, 1) both; }
.r1 { animation-delay: 0.05s; }
.r2 { animation-delay: 0.14s; }
.r3 { animation-delay: 0.24s; }
.r4 { animation-delay: 0.34s; }
.r5 { animation-delay: 0.44s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .wordmark .cursor { animation: none; }
}

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

.section {
  max-width: 1080px;
  margin: 0 auto;
  padding: clamp(3.5rem, 9vh, 6.5rem) var(--gutter) 0;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1.1rem;
  border-top: 1px solid var(--line);
  padding-top: 1.1rem;
  margin-bottom: clamp(1.6rem, 4vh, 2.6rem);
}
.section-no {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--green);
}
.section-head h2 {
  font-weight: 700;
  font-size: clamp(1.05rem, 2.4vw, 1.5rem);
  letter-spacing: 0.12em;
}

.section-body p { max-width: var(--measure); color: var(--ink-dim); font-size: 0.95rem; }
.section-body p + p { margin-top: 1rem; }
.section-body p a, .two-col p a, .three-col p a, .aside a { color: var(--ink); }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
}
.two-col p + p { margin-top: 0; }

.three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
}
.three-col p + p { margin-top: 0; }

/* ---------- feature grid ---------- */

.feature-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.feature-grid li {
  background: var(--surface);
  padding: 1.5rem 1.4rem 1.6rem;
  transition: background 150ms ease;
}
.feature-grid li:hover { background: var(--raised); }
.feature-grid h3 {
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.55rem;
}
.feature-grid h3::before {
  content: "▸ ";
  color: var(--green);
}
.feature-grid p { font-size: 0.88rem; color: var(--ink-dim); }

/* ---------- spec rows ---------- */

.spec-rows { display: block; }
.spec-row {
  display: grid;
  grid-template-columns: 17rem 1fr;
  gap: 1rem 2.5rem;
  padding: 1.35rem 0;
  border-top: 1px solid var(--line);
}
.spec-row:last-child { border-bottom: 1px solid var(--line); }
.spec-row dt {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  color: var(--green);
}
.spec-row dd { color: var(--ink-dim); font-size: 0.95rem; max-width: var(--measure); }

/* ---------- steps ---------- */

.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1.2rem, 3vw, 2rem);
}
.steps li { border-top: 2px solid var(--line-bright); padding-top: 1rem; }
.step-no {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  color: var(--green);
  margin-bottom: 0.5rem;
}
.steps p { font-size: 0.9rem; color: var(--ink-dim); }
.steps p a { color: var(--ink); }

.aside {
  color: var(--ink-mute);
  font-size: 0.9rem;
  max-width: var(--measure);
  margin-top: 2rem;
  padding-left: 1.1rem;
  border-left: 2px solid var(--green-dim);
}

/* ---------- the tree (family) ---------- */

.family-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
}
.family-card {
  display: block;
  text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1.5rem 1.4rem 1.6rem;
  transition: border-color 150ms ease;
}
a.family-card:hover { border-color: var(--green-dim); }
a.family-card:hover h3 { color: var(--green); }
.family-card.current { border-style: dashed; border-color: var(--green-dim); }
.family-ring {
  display: inline-block;
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  margin-bottom: 0.9rem;
}
.heart-swatch { border: 3px solid #e8a838; }
.sap-swatch { border: 3px solid var(--green); }
.cambium-swatch { border: 3px solid #bcd781; }
.bark-swatch { border: 3px solid #7fce7f; }
.family-card h3 {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  margin-bottom: 0.45rem;
  color: var(--ink);
  transition: color 150ms ease;
}
.family-card p { font-size: 0.86rem; color: var(--ink-dim); }

/* ---------- colophon ---------- */

.colophon {
  max-width: 1080px;
  margin: 0 auto;
  padding: clamp(3.5rem, 9vh, 6rem) var(--gutter) 3rem;
}
.colophon-links {
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--ink-mute);
  border-top: 1px solid var(--line);
  padding-top: 1.6rem;
  margin-bottom: 0.8rem;
}
.colophon-links a { color: var(--ink-dim); text-decoration: none; }
.colophon-links a:hover { color: var(--green); }
.colophon-note {
  font-size: 0.85rem;
  color: var(--ink-mute);
  max-width: var(--measure);
}

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

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; }
  .term { max-width: 640px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .family-row { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; }
  .two-col p + p { margin-top: 1rem; }
  .three-col { grid-template-columns: 1fr; }
  .three-col p + p { margin-top: 1rem; }
}

@media (max-width: 640px) {
  .masthead { flex-direction: column; gap: 0.8rem; align-items: flex-start; }
  .mastnav { flex-wrap: wrap; }
  .feature-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .spec-row { grid-template-columns: 1fr; gap: 0.35rem; }
  .family-row { grid-template-columns: 1fr; }
}