/*
 * CloudRoaring — shared styles for the public docs site (docs/index.html + docs/architecture.html).
 * Self-contained, GitHub-Pages-ready. Design system: thermal storage tiers (ember/brass/glacier)
 * as functional colors, a deep-indigo through-line accent, a systems-doc treatment.
 */

:root {
  --ground: #f4f6f8;
  --panel: #ffffff;
  --panel-2: #fbfcfd;
  --ink: #15181e;
  --ink-soft: #3c4450;
  --muted: #69737f;
  --hair: #e4e8ed;
  --hair-strong: #d2d8df;
  --dark: #0e1117;
  --dark-2: #161b22;
  --dark-line: #232a33;
  --on-dark: #c9d2dc;
  --on-dark-dim: #7e8a98;

  /* thermal tiers */
  --hot: #d9480f;
  --hot-bg: #fbede6;
  --warm: #b26a00;
  --warm-bg: #f8f0e0;
  --cold: #0b6e99;
  --cold-bg: #e5f0f5;

  /* through-line accent */
  --accent: #34378f;
  --accent-2: #4a4ec4;
  --accent-soft: #ecedf6;

  --good: #1e7a52;

  --maxw: 1080px;
  --prose: 720px;
  --mono: ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

/* ---------- top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 246, 248, 0.86);
  backdrop-filter: saturate(1.2) blur(10px);
  border-bottom: 1px solid var(--hair);
}
.topbar-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 11px 24px;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 9px;
  font-weight: 680;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}
/* The real mark. Replaced a CSS-drawn gradient dot that used the tier palette (hot/warm/cold) — which had
   nothing to do with the actual brand, whose ramp is blue -> cyan. */
.brand .mark {
  width: 22px;
  height: 22px;
  align-self: center;
  display: block;
}
.brand small {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0;
}
nav.jump {
  margin-left: auto;
  display: flex;
  gap: 3px;
  flex-wrap: wrap;
  align-items: center;
}
nav.jump a {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.02em;
  color: var(--muted);
  text-decoration: none;
  padding: 4px 8px;
  border-radius: 6px;
}
nav.jump a:hover {
  color: var(--accent);
  background: var(--accent-soft);
}
nav.jump a.active {
  color: var(--accent);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 9px;
  border: 1px solid transparent;
  transition:
    transform 0.12s ease,
    background 0.15s ease,
    border-color 0.15s ease;
}
.btn:active {
  transform: translateY(1px);
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-2);
}
.btn-ghost {
  background: transparent;
  color: var(--on-dark);
  border-color: var(--dark-line);
}
.btn-ghost:hover {
  border-color: var(--on-dark-dim);
  color: #fff;
}
.btn-ghost-light {
  background: var(--panel);
  color: var(--ink);
  border-color: var(--hair-strong);
}
.btn-ghost-light:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn .arr {
  font-family: var(--mono);
}

/* ---------- layout ---------- */
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}
section {
  scroll-margin-top: 72px;
}
.prose {
  max-width: var(--prose);
}
p {
  margin: 0 0 1em;
}
a {
  color: var(--accent);
  text-underline-offset: 2px;
}

/* ---------- hero ---------- */
.hero {
  background: var(--dark);
  color: var(--on-dark);
  border-bottom: 1px solid var(--dark-line);
  background-image:
    radial-gradient(60% 120% at 12% 0%, rgba(217, 72, 15, 0.16), transparent 60%),
    radial-gradient(50% 120% at 92% 10%, rgba(11, 110, 153, 0.2), transparent 60%);
}
.hero-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 66px 24px 56px;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-dark-dim);
  margin: 0 0 18px;
}
h1 {
  font-size: clamp(34px, 5.2vw, 60px);
  line-height: 1.03;
  letter-spacing: -0.025em;
  font-weight: 720;
  margin: 0 0 20px;
  color: #f4f7fa;
  text-wrap: balance;
  max-width: 17ch;
}
h1 .roar {
  color: transparent;
  background: linear-gradient(96deg, #f58a4e, #e9c063 46%, #3fb6e0);
  -webkit-background-clip: text;
  background-clip: text;
}
.lede {
  font-size: 19px;
  line-height: 1.6;
  color: var(--on-dark);
  max-width: 60ch;
  margin: 0 0 28px;
}
.lede strong {
  color: #fff;
  font-weight: 620;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 30px;
}
.hero-meta {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  padding-top: 26px;
  border-top: 1px solid var(--dark-line);
}
.hero-meta div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-meta .n {
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 600;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.hero-meta .l {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--on-dark-dim);
}

/* ---------- install pill ---------- */
.install {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 14px;
  background: var(--dark-2);
  color: #e6edf4;
  border: 1px solid var(--dark-line);
  border-radius: 9px;
  padding: 10px 16px;
}
.install .p {
  color: var(--on-dark-dim);
  user-select: none;
}
.install .note {
  color: var(--on-dark-dim);
  font-size: 12px;
}

/* ---------- section headings ---------- */
.section-head {
  padding: 60px 0 8px;
}
h2 {
  font-size: clamp(26px, 3.4vw, 34px);
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 0 0 10px;
  line-height: 1.12;
  text-wrap: balance;
}
h3 {
  font-size: 20px;
  letter-spacing: -0.01em;
  font-weight: 660;
  margin: 32px 0 10px;
}
.kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 10px;
  font-weight: 600;
}
hr.rule {
  border: 0;
  border-top: 1px solid var(--hair);
  margin: 0;
}

/* ---------- tier legend ---------- */
.legend {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 18px 0 4px;
}
.tier-chip {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 5px 11px 5px 9px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid transparent;
}
.tier-chip::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.chip-hot {
  color: var(--hot);
  background: var(--hot-bg);
  border-color: #efcdbc;
}
.chip-hot::before {
  background: var(--hot);
}
.chip-warm {
  color: var(--warm);
  background: var(--warm-bg);
  border-color: #ead9b0;
}
.chip-warm::before {
  background: var(--warm);
}
.chip-cold {
  color: var(--cold);
  background: var(--cold-bg);
  border-color: #bfd9e4;
}
.chip-cold::before {
  background: var(--cold);
}

/* ---------- diagram (ascii / mono) ---------- */
.diagram,
.code {
  overflow-x: auto;
  border-radius: 12px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.55;
  -webkit-overflow-scrolling: touch;
}
.diagram {
  background: var(--dark);
  color: var(--on-dark);
  border: 1px solid var(--dark-line);
  padding: 22px 24px;
  margin: 22px 0;
}
.diagram pre {
  margin: 0;
  white-space: pre;
}
.diagram .t-hot {
  color: #f49161;
}
.diagram .t-warm {
  color: #e2b257;
}
.diagram .t-cold {
  color: #5cc0e6;
}
.diagram .t-dim {
  color: var(--on-dark-dim);
}
.diagram .t-accent {
  color: #9aa0ff;
}
.diagram .t-good {
  color: #5fd39b;
}

/* code */
figure.code-fig {
  margin: 22px 0;
}
.code {
  background: var(--dark-2);
  color: #d6dee8;
  padding: 18px 20px;
  border: 1px solid var(--dark-line);
  border-radius: 12px;
}
.code.has-cap {
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}
figcaption {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--on-dark-dim);
  background: var(--dark);
  border: 1px solid var(--dark-line);
  border-bottom: 0;
  padding: 8px 16px;
  border-radius: 12px 12px 0 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
figcaption .fdot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent-2);
}
.code pre {
  margin: 0;
  white-space: pre;
}
.code .c {
  color: #6e7a88;
  font-style: italic;
}
.code .k {
  color: #c792ea;
}
.code .s {
  color: #ecc48d;
}
.code .f {
  color: #82aaff;
}
.code .n {
  color: #f78c6c;
}

/* inline code */
code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: #eef0f3;
  color: #2a2f3a;
  padding: 1px 5px;
  border-radius: 5px;
  border: 1px solid var(--hair);
}

/* inline code on dark surfaces (hero, crown, footer, diagrams) — subtle, so it reads as part of the
   sentence instead of a harsh light chip */
.hero code,
.crown code,
.footer code,
.diagram code {
  background: rgba(255, 255, 255, 0.09);
  color: #e7edf4;
  border-color: rgba(255, 255, 255, 0.16);
}

/* ---------- feature grid (landing) ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 26px 0 4px;
}
.feature {
  background: var(--panel);
  border: 1px solid var(--hair);
  border-radius: 12px;
  padding: 20px 20px 22px;
}
.feature .ic {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent);
  border: 1px solid var(--accent-soft);
  background: var(--accent-soft);
  border-radius: 7px;
  padding: 3px 8px;
  display: inline-block;
  margin-bottom: 12px;
}
.feature h4 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 660;
  letter-spacing: -0.01em;
}
.feature p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- crown highlight ---------- */
.crown {
  background: var(--dark);
  color: var(--on-dark);
  border-radius: 16px;
  padding: 34px 34px 30px;
  margin: 26px 0;
  background-image: radial-gradient(70% 120% at 100% 0%, rgba(11, 110, 153, 0.22), transparent 62%);
}
.crown .kicker {
  color: #8fe0ff;
}
.crown h3 {
  color: #f4f7fa;
  margin-top: 0;
  font-size: 24px;
}
.crown p {
  color: var(--on-dark);
  max-width: 62ch;
}

/* ---------- generic cards / grids ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--hair);
  border-radius: 12px;
  padding: 22px 24px;
  margin: 22px 0;
}
.card.dark-note {
  background: var(--accent-soft);
  border-color: #d4d6ec;
}
.grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 22px 0;
}
.mini {
  background: var(--panel);
  border: 1px solid var(--hair);
  border-radius: 10px;
  padding: 16px 18px;
}
.mini h4 {
  margin: 0 0 5px;
  font-size: 15px;
  font-weight: 660;
  letter-spacing: -0.01em;
}
.mini p {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--muted);
}
.mini .tag {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  font-weight: 600;
}

ul.clean {
  margin: 14px 0;
  padding-left: 22px;
}
ul.clean li {
  margin: 0 0 7px;
}
ul.clean li::marker {
  color: var(--accent);
}

/* ---------- status table ---------- */
.table-scroll {
  overflow-x: auto;
  margin: 22px 0;
}
table.status {
  border-collapse: collapse;
  width: 100%;
  font-size: 14.5px;
}
table.status th,
table.status td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--hair);
  vertical-align: top;
}
table.status th {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
table.status td .st {
  font-family: var(--mono);
  font-weight: 700;
}
.st-done {
  color: var(--good);
}
.st-next {
  color: var(--accent);
}
.st-todo {
  color: var(--muted);
}

/* ---------- phase cards (deep-dive) ---------- */
.phase {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 0;
  padding: 14px 0 8px;
}
.phase-rail {
  position: relative;
}
.phase-num {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 680;
  color: var(--accent);
  letter-spacing: 0.02em;
}
.phase-line {
  position: absolute;
  left: 7px;
  top: 30px;
  bottom: -40px;
  width: 2px;
  background: var(--hair);
}
.phase:last-of-type .phase-line {
  display: none;
}
.phase-body {
  min-width: 0;
}
.phase h2 {
  font-size: clamp(22px, 2.8vw, 28px);
}
.milestone-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--hair-strong);
  border-radius: 999px;
  padding: 2px 9px;
  display: inline-block;
  vertical-align: middle;
  margin-left: 4px;
  font-weight: 600;
}

/* ---------- invariant callout ---------- */
.secured {
  border: 1px solid var(--hair);
  border-left: 3px solid var(--good);
  background: var(--panel);
  border-radius: 0 10px 10px 0;
  padding: 14px 18px;
  margin: 22px 0 8px;
}
.secured .lbl {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--good);
  font-weight: 700;
  margin: 0 0 4px;
  display: flex;
  align-items: center;
  gap: 7px;
}
.secured .lbl::before {
  content: '✓';
  font-weight: 800;
}
.secured p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--ink-soft);
}

.warnbox {
  border: 1px solid #ead9b0;
  background: var(--warm-bg);
  border-radius: 10px;
  padding: 14px 18px;
  margin: 20px 0;
}
.warnbox .lbl {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--warm);
  font-weight: 700;
  margin-bottom: 5px;
}
.warnbox p {
  margin: 0;
  font-size: 14.5px;
  color: var(--ink-soft);
}

/* ---------- footer ---------- */
.footer {
  background: var(--dark);
  color: var(--on-dark-dim);
  margin-top: 64px;
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 40px 24px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.7;
}
.footer strong {
  color: var(--on-dark);
  font-weight: 600;
}
.footer a {
  color: #9aa0ff;
  text-decoration: none;
}
.footer a:hover {
  text-decoration: underline;
}
.footer .flinks {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

/* ---------- focus + motion ---------- */
a:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 2px;
  border-radius: 6px;
}

@media (max-width: 860px) {
  .features {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 720px) {
  body {
    font-size: 16px;
  }
  .phase {
    grid-template-columns: 40px 1fr;
  }
  .grid2,
  .features {
    grid-template-columns: 1fr;
  }
  nav.jump {
    display: none;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(14px);
    transition:
      opacity 0.6s ease,
      transform 0.6s ease;
  }
  .reveal.in {
    opacity: 1;
    transform: none;
  }
}

/* ── Benchmarks (Phase 5c): the crossover chart + stats table ──────────────────────── */
.bench-figure {
  margin: 0;
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--hair);
  border-radius: 14px;
  overflow-x: auto;
}
.bench-figure svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 760px;
  margin: 0 auto;
}
.bench-figure figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}
.bench-table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 0.94rem;
}
.bench-table th,
.bench-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--hair);
  text-align: left;
}
.bench-table thead th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.bench-table tbody tr:last-child td {
  border-bottom: none;
}