@import "https://fonts.googleapis.com/css2?family=Source+Serif+4:opsz,wght@8..60,300;8..60,400;8..60,500;8..60,600&display=swap";

@font-face {
  font-family: "SF Pro";
  src: url("./fonts/SF-Pro-subset.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "ABC Arizona Flare";
  src: url("./fonts/ABCArizonaFlare-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "ABC Arizona Flare";
  src: url("./fonts/ABCArizonaFlare-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "ABC Arizona Flare";
  src: url("./fonts/ABCArizonaFlare-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Berkeley Mono";
  src: url("./fonts/Berkeley Mono Variable.otf") format("opentype");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --layout-content-max-width: 68rem;
  --layout-gutter: 1rem;
  --layout-rail-width: 22rem;
  --layout-column-gap: 1.5rem;
  --radius: 0.625rem;
  --radius-sm: calc(var(--radius) - 4px);
  --radius-md: calc(var(--radius) - 2px);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) + 4px);
  --radius-2xl: calc(var(--radius) + 8px);
  --radius-3xl: calc(var(--radius) + 12px);

  --background: oklch(0.9838 0.0081 98.43);
  --foreground: oklch(0.1881 0.0026 67.67);
  --card: oklch(1 0 0);
  --card-muted: oklch(0.9951 0.0029 106.45);
  --card-foreground: oklch(0.1881 0.0026 67.67);
  --popover: oklch(0.9951 0.0029 106.45);
  --popover-foreground: oklch(0.1881 0.0026 67.67);
  --primary: oklch(0.2878 0.0057 56.16);
  --primary-foreground: oklch(0.9843 0.0078 98.43);
  --secondary: oklch(0.9538 0.0095 100.48);
  --secondary-foreground: oklch(0.2878 0.0057 56.16);
  --muted: oklch(0.9661 0.0121 96.32);
  --muted-foreground: oklch(0.4988 0.0157 97.66);
  --muted-secondary: oklch(0.9643 0.0128 96.33);
  --accent: oklch(0.9538 0.0095 100.48);
  --accent-foreground: oklch(0.2878 0.0057 56.16);
  --destructive: oklch(0.6748 0.1791 30.39);
  --border: oklch(0.9155 0.0046 34.31);
  --input: oklch(0.9155 0.0046 34.31);
  --input-bg: oklch(0.9962 0.0039 106.47);
  --ring: oklch(0.8154 0.0359 89);
  --brand: oklch(0.7373 0.1379 59.12);
  --brand-foreground: oklch(0.9843 0.0078 98.43);
  --brownstone-foreground: oklch(0.7102 0.144 57.84);

  --font-sans:
    "SF Pro", "SF Pro Text", "SF Pro Display", system-ui, sans-serif;
  --font-heading:
    "ABC Arizona Flare", "Iowan Old Style", "Palatino Linotype", serif;
  --font-body:
    "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-mono:
    "Berkeley Mono", "SFMono-Regular", Consolas, monospace;

  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 8px 24px rgba(41, 34, 23, 0.06);
  --sharp-edge-top-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--foreground);
  background:
    radial-gradient(circle at top right, color-mix(in oklab, var(--brand) 14%, transparent), transparent 24%),
    linear-gradient(180deg, var(--background) 0%, color-mix(in oklab, var(--background) 90%, var(--secondary)) 100%);
  font-family: var(--font-body);
  line-height: 1.6;
}

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

a {
  color: var(--brownstone-foreground);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
  transition: color 160ms ease, text-decoration-style 160ms ease;
}

a:hover,
a:focus-visible {
  color: var(--foreground);
  text-decoration-style: solid;
}

p,
li {
  color: var(--muted-foreground);
}

h1,
h2,
h3,
strong {
  color: var(--foreground);
}

h1,
h2 {
  font-family: var(--font-heading);
  line-height: 1.06;
  letter-spacing: -0.03em;
  margin: 0 0 0.5rem;
}

h1 {
  font-size: clamp(3rem, 6vw, 5.8rem);
}

h2 {
  font-size: clamp(2rem, 3.2vw, 3.2rem);
}

h3 {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 0 0 0.4rem;
}

.navbar {
  width: min(var(--layout-content-max-width), calc(100vw - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 0;
}

.navbar-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.navbar-brand {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--foreground);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.navbar-brand:hover {
  color: var(--foreground);
}

.navbar-links {
  display: flex;
  gap: 0.2rem;
}

.navbar-links a {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--muted-foreground);
  text-decoration: none;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-md);
  transition: color 160ms ease, background 160ms ease;
}

.navbar-links a:hover {
  color: var(--foreground);
  background: var(--secondary);
}

[data-page="workstream"] .navbar-links a[href="workstream.html"],
[data-page="gameplan"] .navbar-links a[href="gameplan.html"],
[data-page="execution"] .navbar-links a[href="execution.html"] {
  color: var(--foreground);
  background: var(--secondary);
}

.page-shell {
  width: min(var(--layout-content-max-width), calc(100vw - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.index-main {
  min-width: 0;
}

.index-section {
  margin-top: 1.5rem;
}

.index-flow-section {
  margin-top: 1.5rem;
}

.main-column-section {
  max-width: calc(100% - var(--layout-rail-width) - var(--layout-column-gap));
}

.hero,
.panel,
.sidenote-card {
  animation: rise 500ms ease both;
}

.hero {
  display: block;
  padding: 3rem 0 2rem;
}

.hero-copy {
  width: 100%;
  max-width: calc(100% - var(--layout-rail-width) - var(--layout-column-gap));
}

.section-label {
  display: inline-flex;
  align-items: center;
  min-height: 1.5rem;
  width: fit-content;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--secondary);
  color: var(--secondary-foreground);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 600;
  margin: 0 0 0.9rem;
}

.lede {
  font-size: 1.14rem;
  max-width: none;
}

.panel {
  background: color-mix(in oklab, var(--card-muted) 72%, var(--secondary));
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xs);
}

.panel,
.sidenote-card {
  padding: 1.5rem;
  margin-top: 1.25rem;
}

.section-stack {
  display: grid;
  gap: 0.35rem;
}

.section-block {
  margin-top: 1rem;
}

.sidenote-card {
  background: transparent;
  border: 0;
  border-left: 1px solid color-mix(in oklab, var(--brand) 20%, var(--border));
  border-radius: 0;
  box-shadow: none;
  padding: 0 0 0 1rem;
  margin-top: 0;
}

.sidenote-card h2 {
  font-size: clamp(1.65rem, 2vw, 2.1rem);
  line-height: 1.08;
}

.sidenote-intro {
  margin-top: 0.35rem;
}

.sidenote-list {
  margin: 0.85rem 0 0;
  padding-left: 1.35rem;
  display: grid;
  gap: 0.85rem;
}

.sidenote-list li::marker {
  color: var(--brand);
  font-weight: 600;
}

.callout {
  padding: 1.1rem 1.15rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: var(--card-muted);
}

.callout h3 {
  margin-bottom: 0.2rem;
}

.callout-warm {
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--brand) 16%, transparent);
}

.callout-cool {
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--ring) 28%, transparent);
}

.callout-sharp {
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--foreground) 14%, transparent);
}

.workflow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 1rem;
  align-items: center;
}

/* ── Legacy flow selectors (used by execution.html, workstream.html) ── */

.flow-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, var(--layout-rail-width));
  gap: var(--layout-column-gap);
  align-items: start;
}

.flow-side {
  grid-column: 2;
  grid-row: 3;
}

.flow-optional {
  grid-column: 1;
  grid-row: 3;
  background:
    linear-gradient(135deg, color-mix(in oklab, var(--secondary) 70%, white), color-mix(in oklab, var(--card) 92%, white));
  border-style: dashed;
  border-color: color-mix(in oklab, var(--brand) 26%, var(--border));
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--brand) 10%, transparent);
}

.flow-optional-header {
  display: flex;
  align-items: center;
  margin-bottom: 0.65rem;
}

/* ── Flow diagram ── */

.flow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}

.flow-diagram svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: calc(100% - var(--layout-rail-width) - var(--layout-column-gap));
}

.flow-details {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, var(--layout-rail-width));
  gap: var(--layout-column-gap);
  align-items: start;
}

.flow-annotations {
  display: grid;
  gap: 1.25rem;
  align-content: start;
}

.flow-annotation {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: start;
}

.flow-annotation .workflow-kicker {
  margin-bottom: 0;
}

.flow-annotation h3 {
  margin-bottom: 0.2rem;
}

.flow-annotation p {
  margin: 0 0 0.3rem;
}

.workflow-kicker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: var(--secondary);
  color: var(--secondary-foreground);
  font-weight: 700;
  font-family: var(--font-sans);
  margin-bottom: 0.9rem;
}

.workflow-step {
  background: var(--card-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1rem;
  min-height: 100%;
}

.workflow-arrow {
  font-size: 2rem;
  text-align: center;
  color: var(--brand);
}

.key-points,
.architecture-grid,
.classification-grid,
.source-list {
  display: grid;
  gap: 1rem;
}

.key-points {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.key-points-wide {
  margin-top: 1rem;
}

.classification-grid,
.source-list,
.architecture-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.key-point,
.arch-card,
.schema-card,
.source-card,
.criteria-card,
.timeline-item {
  background: var(--card-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1rem;
}

.source-card {
  text-decoration: none;
  display: grid;
  gap: 0.3rem;
}

.source-card span {
  color: var(--muted-foreground);
}

.timeline {
  display: grid;
  gap: 1rem;
}

.criteria-card ul {
  margin: 0.7rem 0 0;
  padding-left: 1.25rem;
}

.schema-excerpts {
  display: grid;
  gap: 0.85rem;
}

details {
  background: var(--card-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 0.8rem 1rem 1rem;
}

summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--foreground);
}

.code-block {
  position: relative;
  background: var(--card);
  color: var(--card-foreground);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
}

.code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--card-muted);
}

.code-head strong {
  color: var(--muted-foreground);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.copy-button {
  border: 1px solid var(--border);
  background: var(--background);
  color: var(--foreground);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.8rem;
  font: inherit;
  box-shadow: var(--shadow-xs);
}

.copy-button:hover,
.copy-button:focus-visible {
  background: var(--muted);
}

pre {
  margin: 0;
  padding: 1rem;
  overflow: auto;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  line-height: 1.55;
  background: var(--card);
}

code {
  font-family: var(--font-mono);
}

.site-footer {
  width: min(var(--layout-content-max-width), calc(100vw - 2rem));
  margin: 0 auto;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--muted-foreground);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--muted-foreground);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 960px) {
  .hero,
  .workflow,
  .key-points {
    grid-template-columns: 1fr;
  }

  .flow-details {
    grid-template-columns: 1fr;
  }

  .flow-layout {
    grid-template-columns: 1fr;
  }

  .flow-side {
    grid-column: 1;
    grid-row: 4;
  }

  .hero-copy,
  .main-column-section {
    max-width: none;
  }

  .workflow-arrow {
    transform: rotate(90deg);
  }
}

@media (max-width: 640px) {
  h1 {
    font-size: 2.8rem;
  }

  h2 {
    font-size: 2rem;
  }

  .page-shell {
    width: min(var(--layout-content-max-width), calc(100vw - 1rem));
  }

  .panel {
    padding: 1.1rem;
  }
}