/* www.world-in-a-pie.com — tokens and doc-viewer styles.
   Values from docs/design-spec.md §1 (verbatim from the shipped artifact);
   doc-viewer treatment from §4 (provisional layout, adjustable). */

:root {
  --sky: #5B9BD8;
  --sky-deep: #2E6DA4;
  --navy: #1B3A5C;
  --navy-deep: #12253B;
  --bg: #F7F9FB;
  --bg-soft: #F0F4F7;
  --border: #DCE4EA;
  --text: #1B3A5C;
  --text-soft: #4C6076;
  --hazard-a: #F0B428;
  --hazard-b: #1A1A1A;
  --mono: "SF Mono", "Cascadia Code", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  --body: -apple-system, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --sky: #6FADE6;
    --sky-deep: #8FC0EE;
    --navy: #E7EEF3;
    --navy-deep: #FFFFFF;
    --bg: #0E151C;
    --bg-soft: #16212A;
    --border: #253645;
    --text: #E7EEF3;
    --text-soft: #9FB2C2;
  }
}

:root[data-theme="dark"] {
  --sky: #6FADE6;
  --sky-deep: #8FC0EE;
  --navy: #E7EEF3;
  --navy-deep: #FFFFFF;
  --bg: #0E151C;
  --bg-soft: #16212A;
  --border: #253645;
  --text: #E7EEF3;
  --text-soft: #9FB2C2;
}

:root[data-theme="light"] {
  --sky: #5B9BD8;
  --sky-deep: #2E6DA4;
  --navy: #1B3A5C;
  --navy-deep: #12253B;
  --bg: #F7F9FB;
  --bg-soft: #F0F4F7;
  --border: #DCE4EA;
  --text: #1B3A5C;
  --text-soft: #4C6076;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 40px;
}

h1, h2, h3 {
  font-weight: 800;
  letter-spacing: -0.01em;
  text-wrap: balance;
  line-height: 1.25;
}

a { color: var(--sky-deep); }

a:focus-visible {
  outline: 2px solid var(--sky);
  outline-offset: 2px;
}

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

/* ---- Doc-viewer page (spec §4) ---- */

.doc-page {
  max-width: 780px;
  margin: 0 auto;
  padding: 48px 40px 56px;
}

.breadcrumb {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--sky-deep);
  text-decoration: none;
  display: inline-block;
  margin-bottom: 28px;
}

.breadcrumb:hover { text-decoration: underline; }

.doc-title {
  font-size: clamp(1.6rem, 2.8vw, 2.1rem);
  margin: 0 0 10px;
}

.doc-meta {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 12px;
}

.doc-category {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--sky-deep);
  font-weight: 700;
}

.doc-audience { color: var(--text-soft); font-size: 14.5px; }

.doc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 36px;
}

.doc-tag {
  background: var(--bg-soft);
  color: var(--text-soft);
  font-family: var(--mono);
  font-size: 11px;
  border-radius: 3px;
  padding: 3px 8px;
}

/* Markdown body — the site's own theme, standing in for Tailwind `prose` */

.doc-body { padding-bottom: 8px; }

.doc-body h1 { font-size: 1.55rem; margin: 2.2em 0 0.6em; }
.doc-body h2 {
  font-size: 1.3rem;
  margin: 2.2em 0 0.6em;
  padding-top: 0.9em;
  border-top: 1px solid var(--border);
}
.doc-body h3 { font-size: 1.08rem; margin: 1.8em 0 0.5em; }
.doc-body h1:first-child { margin-top: 0; }

.doc-body p, .doc-body li { color: var(--text); }
.doc-body strong { color: var(--text); }

.doc-body code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.1em 0.35em;
}

.doc-body pre {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 16px 18px;
  overflow-x: auto;
  line-height: 1.5;
}

.doc-body pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 13px;
}

.doc-body table {
  border-collapse: collapse;
  width: 100%;
  display: block;
  overflow-x: auto;
  font-size: 14.5px;
  margin: 1.2em 0;
}

.doc-body th, .doc-body td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
  vertical-align: top;
}

.doc-body th {
  background: var(--bg-soft);
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.doc-body blockquote {
  margin: 1.2em 0;
  padding: 2px 18px;
  border-left: 3px solid var(--sky);
  color: var(--text-soft);
}

.doc-body hr { border: none; border-top: 1px solid var(--border); margin: 2.5em 0; }

.credibility {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-soft);
  border-top: 1px dashed var(--border);
  margin-top: 48px;
  padding: 18px 0 8px;
}

/* ---- Site footer (spec §2, shared by every page — CASE-624) ---- */

.site-footer {
  border-top: 1px solid var(--border);
}

.site-footer .container {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 26px;
  padding-bottom: 32px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-soft);
}

.site-footer img { height: 26px; opacity: 0.85; }

.footer-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--hazard-a);
  display: inline-block;
}

/* ---- Homepage (spec §2) ---- */

section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--sky-deep);
  margin-bottom: 14px;
}

.sec-head { max-width: 640px; }
.sec-head h2 { font-size: clamp(1.6rem, 2.8vw, 2.1rem); margin: 0 0 14px; }
.sec-head .sub { color: var(--text-soft); font-size: 16.5px; margin: 0 0 12px; }

/* Nav */

.nav { border-bottom: 1px solid var(--border); }

.nav-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  padding-top: 16px;
  padding-bottom: 16px;
}

.brand img { height: 34px; display: block; }

.nav-links { display: flex; gap: 22px; flex: 1; }

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 600;
}

.nav-links a:hover { color: var(--sky-deep); }

.status-chip {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  color: #FFFFFF;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.55);
  background: repeating-linear-gradient(45deg,
    var(--hazard-a), var(--hazard-a) 7px,
    var(--hazard-b) 7px, var(--hazard-b) 14px);
  border-radius: 3px;
  padding: 5px 10px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
}

.chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #FFFFFF;
  display: inline-block;
}

/* Hero */

.hero { border-bottom: 1px solid var(--border); }

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}

.hero h1 { font-size: clamp(2rem, 4.2vw, 2.9rem); margin: 0 0 20px; }

.hero h1 .accent { display: block; color: var(--sky-deep); }

.lede { color: var(--text-soft); font-size: 17.5px; margin: 0 0 22px; }

.pun-callout {
  border: 1px dashed var(--border);
  border-radius: 5px;
  padding: 14px 18px;
  font-size: 15px;
  margin-bottom: 28px;
}

.hero-photo img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  object-position: center 30%;
  border-radius: 10px;
  border: 1px solid var(--border);
  box-shadow: 0 10px 32px rgba(18, 37, 59, 0.12);
  display: block;
}

/* Buttons (spec §1) */

.cta-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }

.btn {
  padding: 13px 22px;
  border-radius: 5px;
  font-weight: 700;
  font-size: 14.5px;
  text-decoration: none;
  display: inline-block;
  transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.15s;
}

.btn:hover { transform: translateY(-1px); }

.btn:focus-visible { outline: 2px solid var(--sky-deep); outline-offset: 2px; }

.btn.primary { background: var(--navy); color: var(--bg); }
.btn.primary:hover { background: var(--sky-deep); }

.btn.ghost { border: 1.5px solid var(--border); color: var(--text); }
.btn.ghost:hover { border-color: var(--sky-deep); color: var(--sky-deep); }

.disabled-link { opacity: 0.45; pointer-events: none; }

.cta-caption { font-family: var(--mono); font-size: 12px; color: var(--text-soft); }

/* Card/grid pattern (spec §1): 1px-gap grid, background shows as hairlines */

.feature-grid {
  display: grid;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 5px;
  overflow: hidden;
  margin-top: 28px;
}

.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }

.feature { background: var(--bg); padding: 24px 22px; }

.feature h3 { font-size: 1.02rem; margin: 14px 0 8px; }
.feature p { color: var(--text-soft); font-size: 14.5px; margin: 0; }
.feature code, .anchor-feature code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.05em 0.3em;
}

.anchor-feature {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 24px 22px;
  margin-top: 36px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.anchor-feature h3 { font-size: 1.08rem; margin: 2px 0 8px; }
.anchor-feature p { color: var(--text-soft); font-size: 15px; margin: 0; }

.badge {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--sky);
  color: #FFFFFF;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 12.5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 36px;
}

/* Library section */

.lib-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 20px;
}

.lib-col h4 {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--sky-deep);
  margin: 1.4em 0 0.6em;
}

.lib-count { color: var(--text-soft); font-weight: 400; }

.lib-col ul { list-style: none; padding: 0; margin: 0; }
.lib-col li { margin: 7px 0; }
.lib-col a { text-decoration: none; font-size: 15px; }
.lib-col a:hover { text-decoration: underline; }

.lib-note, .get-strip {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-soft);
  border-top: 1px dashed var(--border);
  margin-top: 36px;
  padding-top: 16px;
}

/* Dark reference panel — The Technical Library (CASE-625). Fixed dark in
   both site themes, like the old chronicle panel it inherits from; the
   Library's own elements get explicit overrides to keep contrast on navy. */

.dark-panel { background: var(--navy-deep); }

:root[data-theme="dark"] .dark-panel { background: #060A0F; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .dark-panel { background: #060A0F; }
}

.dark-panel h2 { color: #E7EEF3; }
.dark-panel .sub { color: #9FB2C2; }
.dark-panel .eyebrow { color: #8FC0EE; }
.dark-panel .lib-col h4 { color: #8FC0EE; }
.dark-panel .lib-count { color: #9FB2C2; }
.dark-panel .lib-col a { color: #E7EEF3; }
.dark-panel .lib-col a:hover { color: #8FC0EE; }
.dark-panel .lib-note { color: #9FB2C2; border-top-color: #253645; }
.dark-panel a:focus-visible { outline-color: #8FC0EE; }

.get-strip code {
  font-family: var(--mono);
  font-size: 1em;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.05em 0.3em;
}

/* Agentic Coding (#experiment) — peer section, standard light treatment
   (CASE-623#1 dropped the old dark "chronicle chapter" panel) */

.stats-row {
  display: flex;
  gap: 56px;
  margin: 40px 0 32px;
  flex-wrap: wrap;
}

.stat { display: flex; flex-direction: column; }

.stat-num {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 2.4rem;
  color: var(--navy);
  line-height: 1.1;
}

.stat-label { color: var(--text-soft); font-size: 14px; }

/* Last section's bottom border would double with the footer's top border */
section:last-of-type { border-bottom: none; }

/* Responsive (spec §1: 880px and 560px) */

@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-photo { order: -1; }
  .hero-photo img { height: 220px; }
  .cols-3, .cols-4 { grid-template-columns: repeat(2, 1fr); }
  .lib-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .container, .doc-page { padding-left: 22px; padding-right: 22px; }
  .nav-links { display: none; }
  .cols-3, .cols-4 { grid-template-columns: 1fr; }
  .lib-grid { grid-template-columns: 1fr; }
  .anchor-feature { flex-direction: column; }
}