/* Scaffold site — neo-brutalist theme.
   Mobile-first, token-driven. 3px borders, hard offset shadows, one acid accent. */

:root {
  --paper: #FAFAF7;
  --ink: #0A0A0A;
  --acid: #C8FF00;
  --danger: #FF3B30;
  --muted: #55554E;
  --card: #FFFFFF;
  --border: 3px solid var(--ink);
  --shadow: 5px 5px 0 var(--ink);
  --shadow-sm: 3px 3px 0 var(--ink);
  --font-display: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --touch-target: 44px;
  --sat: env(safe-area-inset-top, 0px);
  --sar: env(safe-area-inset-right, 0px);
  --sab: env(safe-area-inset-bottom, 0px);
  --sal: env(safe-area-inset-left, 0px);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #101010;
    --ink: #FAFAF7;
    --card: #181818;
    --muted: #A8A8A0;
    --shadow: 5px 5px 0 var(--acid);
    --shadow-sm: 3px 3px 0 var(--acid);
  }
}

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

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

body {
  margin: 0;
  font-family: var(--font-display);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.5;
  min-height: 100dvh;
  padding: var(--sat) var(--sar) var(--sab) var(--sal);
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
}

img, video { max-width: 100%; height: auto; }

/* ---------- header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--ink);
  color: var(--paper);
  border-bottom: 3px solid var(--ink);
  padding-top: var(--sat);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1rem;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  background: var(--acid);
  color: #0A0A0A;
  border: 3px solid var(--paper);
  font-weight: 900;
  font-size: 1.1rem;
}
.brand-name {
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 1.05rem;
}
.nav {
  display: flex;
  gap: 0.25rem;
  overflow-x: auto;
  padding: 0 0.75rem 0.6rem;
  -webkit-overflow-scrolling: touch;
}
.nav a {
  flex: 0 0 auto;
  color: var(--paper);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.5rem 0.7rem;
  min-height: var(--touch-target);
  display: inline-flex;
  align-items: center;
  border: 2px solid transparent;
}
.nav a:active { background: var(--acid); color: #0A0A0A; }

main {
  max-width: 46rem;
  margin-inline: auto;
  padding: 0 1rem 4rem;
}

section { padding-top: 2.5rem; }

/* ---------- type ---------- */
h1, h2, h3 { line-height: 1.05; margin: 0 0 0.75rem; }
.display {
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.02em;
  font-size: clamp(2.6rem, 13vw, 5rem);
}
.section-title {
  display: inline-block;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.01em;
  font-size: clamp(1.5rem, 6vw, 2.2rem);
  background: var(--acid);
  color: #0A0A0A;
  border: var(--border);
  box-shadow: var(--shadow-sm);
  padding: 0.3rem 0.7rem;
  margin-bottom: 1rem;
}
.lede { font-size: 1.1rem; font-weight: 600; max-width: 34rem; }
.mono { font-family: var(--font-mono); }
.small { font-size: 0.85rem; }
.muted { color: var(--muted); }

/* ---------- cards / badges / buttons ---------- */
.nb-card {
  background: var(--card);
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 1rem;
  margin-bottom: 1.25rem;
}
.nb-card h3 {
  font-weight: 900;
  text-transform: uppercase;
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}
.nb-card p { margin: 0.4rem 0; }
.limit-line {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--paper);
  border: 2px solid var(--ink);
  padding: 0.45rem 0.6rem;
  margin-top: 0.6rem;
  overflow-x: auto;
  white-space: nowrap;
}
.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--acid);
  color: #0A0A0A;
  border: 2px solid #0A0A0A;
  box-shadow: 3px 3px 0 #0A0A0A;
  padding: 0.3rem 0.6rem;
  margin: 0 0.4rem 0.4rem 0;
  transform: rotate(-1.5deg);
}
.badge:nth-child(even) { transform: rotate(1.5deg); }
.badge.dark { background: var(--ink); color: var(--paper); border-color: var(--ink); }
@media (prefers-color-scheme: dark) {
  .badge { border-color: var(--acid); box-shadow: 3px 3px 0 var(--acid); }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-target);
  min-width: var(--touch-target);
  padding: 0.6rem 1.1rem;
  border: var(--border);
  background: var(--acid);
  color: #0A0A0A;
  font: inherit;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  text-decoration: none;
}
.btn:active { transform: translate(3px, 3px); box-shadow: 0 0 0 var(--ink); }
.btn.secondary { background: var(--card); color: var(--ink); }
.btn:disabled { opacity: 0.5; cursor: default; }

/* ---------- ticker ---------- */
.ticker {
  border-top: var(--border);
  border-bottom: var(--border);
  background: var(--ink);
  color: var(--acid);
  overflow: hidden;
  white-space: nowrap;
  margin: 1.5rem -1rem 0;
}
.ticker-inner {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  padding: 0.6rem 0;
  animation: ticker 22s linear infinite;
}
@media (prefers-reduced-motion: reduce) {
  .ticker-inner { animation: none; }
}
@keyframes ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ---------- infra grid ---------- */
.infra-grid { display: grid; gap: 1.25rem; }
@media (min-width: 40rem) {
  .infra-grid { grid-template-columns: 1fr 1fr; }
}

/* ---------- SVG diagram ---------- */
.diagram-wrap { margin-bottom: 1.25rem; }
.diagram-svg { width: 100%; height: auto; display: block; }
.diagram-node { cursor: pointer; }
.diagram-node rect.box { fill: var(--card); stroke: var(--ink); stroke-width: 3; }
.diagram-node rect.hs { fill: var(--ink); }
.diagram-node text { fill: var(--ink); font-family: var(--font-mono); }
.diagram-node.active rect.box { fill: var(--acid); }
.diagram-node.active text { fill: #0A0A0A; }
.diagram-edge { stroke: var(--ink); stroke-width: 3; }
.detail-panel { min-height: 7rem; }
.detail-panel h3 { margin-bottom: 0.3rem; }

/* ---------- code ---------- */
pre.code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.55;
  background: #0A0A0A;
  color: #FAFAF7;
  border: var(--border);
  padding: 0.9rem;
  overflow-x: auto;
  margin: 0.7rem 0 0;
  -webkit-overflow-scrolling: touch;
}
pre.code .c { color: #8A8A80; }

/* ---------- meter ---------- */
.meter-inputs { display: grid; gap: 0.9rem; margin-bottom: 1.25rem; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  margin-bottom: 0.35rem;
}
.field input {
  width: 100%;
  min-height: var(--touch-target);
  font-family: var(--font-mono);
  font-size: 1rem;
  padding: 0.55rem 0.7rem;
  border: var(--border);
  background: var(--card);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}
.meter { margin-bottom: 1rem; }
.meter-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.3rem;
}
.meter-bar {
  border: var(--border);
  height: 34px;
  background: var(--card);
  position: relative;
}
.meter-fill {
  height: 100%;
  background: var(--acid);
  width: 0%;
  transition: width 0.35s ease-out;
  border-right: 3px solid var(--ink);
}
.meter.over .meter-fill { background: var(--danger); }
.meter-foot {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 0.25rem;
}
.over-badge {
  background: var(--danger);
  color: #fff;
  border: 2px solid #0A0A0A;
  padding: 0.1rem 0.45rem;
  font-size: 0.7rem;
}

/* ---------- decision trees ---------- */
.tree-q { font-weight: 800; font-size: 1.05rem; margin-bottom: 0.9rem; }
.tree-btns { display: flex; gap: 0.8rem; }
.tree-btns .btn { flex: 1; }
.tree-result h3 { font-size: 1.2rem; }
.tree-steps {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 0.8rem;
}

/* ---------- checklist ---------- */
.check-item {
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
  padding: 0.7rem 0.2rem;
  border-bottom: 2px solid var(--ink);
  cursor: pointer;
  min-height: var(--touch-target);
}
.check-item:last-child { border-bottom: 0; }
.check-box {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border: var(--border);
  background: var(--card);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  margin-top: 0.1rem;
}
.check-item.done .check-box { background: var(--acid); color: #0A0A0A; }
.check-item.done .check-label { text-decoration: line-through; opacity: 0.65; }
.check-label { font-weight: 600; }
.check-hint { display: block; font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); font-weight: 400; }
.check-progress { margin-top: 0.8rem; }

/* ---------- builder ---------- */
.target-picker { display: grid; gap: 0.7rem; margin-bottom: 1rem; }
.target-opt {
  border: var(--border);
  background: var(--card);
  box-shadow: var(--shadow-sm);
  padding: 0.8rem;
  min-height: var(--touch-target);
  font: inherit;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  text-align: left;
  cursor: pointer;
  color: var(--ink);
  width: 100%;
}
.target-opt small { display: block; font-weight: 400; text-transform: none; letter-spacing: 0; color: var(--muted); }
.target-opt.selected { background: var(--acid); color: #0A0A0A; }
.target-opt.selected small { color: #0A0A0A; }
textarea.builder-prompt {
  width: 100%;
  min-height: 120px;
  border: var(--border);
  background: var(--card);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 0.7rem;
  box-shadow: var(--shadow-sm);
  resize: vertical;
  margin-bottom: 1rem;
}
.status-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 2px solid var(--ink);
  padding: 0.25rem 0.6rem;
  margin-bottom: 0.6rem;
}
.status-badge.queued { background: var(--card); color: var(--ink); }
.status-badge.working { background: var(--acid); color: #0A0A0A; }
.status-badge.done { background: #0A0A0A; color: var(--acid); }
.status-badge.failed { background: var(--danger); color: #fff; }
.step-list { list-style: none; margin: 0.6rem 0; padding: 0; font-family: var(--font-mono); font-size: 0.8rem; }
.step-list li { padding: 0.35rem 0; border-bottom: 1px dashed var(--muted); }
.notice {
  border: var(--border);
  background: var(--acid);
  color: #0A0A0A;
  box-shadow: var(--shadow-sm);
  padding: 0.9rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.notice .mono { font-weight: 400; }

/* ---------- footer ---------- */
.site-footer {
  border-top: var(--border);
  margin-top: 3rem;
  padding: 1.5rem 1rem calc(1.5rem + var(--sab));
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-align: center;
  color: var(--muted);
}

a { color: inherit; }