/* gProdDevKit — public hub landing page
   Pure static CSS, no external deps. Theme-aware via prefers-color-scheme. */

:root {
  --bg: #f6f4f1;
  --bg-raised: #ffffff;
  --bg-sunken: #eeebe5;
  --text: #1c1916;
  --text-muted: #5c554c;
  --text-faint: #6b6257;
  --border: rgba(28, 25, 22, 0.12);
  --border-strong: rgba(28, 25, 22, 0.22);
  --accent: #a8461e;
  --accent-strong: #8a3616;
  --live-bg: #1f7a4d;
  --live-contrast: #f2fbf5;
  --focus-ring: #2f6fed;
  --shadow-sm: 0 1px 2px rgba(20, 16, 12, 0.05);
  --shadow-md: 0 4px 14px rgba(20, 16, 12, 0.08), 0 1px 3px rgba(20, 16, 12, 0.06);
  --shadow-lg: 0 12px 32px rgba(20, 16, 12, 0.14), 0 2px 6px rgba(20, 16, 12, 0.08);
  --lane-a: #a8461e;
  --lane-b: #2f6f6f;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15130f;
    --bg-raised: #1e1b16;
    --bg-sunken: #100e0b;
    --text: #f1ece3;
    --text-muted: #b9ae9e;
    --text-faint: #8c8172;
    --border: rgba(241, 236, 227, 0.12);
    --border-strong: rgba(241, 236, 227, 0.22);
    --accent: #e07845;
    --accent-strong: #f2955f;
    --live-bg: #2f9765;
    --live-contrast: #f0fff6;
    --focus-ring: #7ab0ff;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
    --lane-a: #e07845;
    --lane-b: #5fb6b6;
  }
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light dark;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  width: 100%;
  max-width: 74rem;
  margin: 0 auto;
  padding-left: clamp(1.25rem, 4vw, 2.5rem);
  padding-right: clamp(1.25rem, 4vw, 2.5rem);
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand-mark {
  font-size: 1.15rem;
}

.brand-sub {
  font-weight: 500;
  font-size: 0.8rem;
  color: var(--text-muted);
  display: none;
}

@media (min-width: 640px) {
  .brand-sub {
    display: inline;
  }
}

.site-nav {
  display: flex;
  gap: clamp(0.75rem, 2vw, 1.5rem);
  flex-wrap: wrap;
}

.site-nav a {
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  padding: 0.3rem 0.1rem;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.site-nav a:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

/* ---------- Hero ---------- */

.hero {
  padding-top: clamp(3rem, 8vw, 5.5rem);
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin-bottom: 1.1rem;
}

.eyebrow::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--accent);
}

h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 1.1rem;
  max-width: 22ch;
}

.hero-lede {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 46rem;
  margin: 0 0 0.5rem;
}

.hero-intro {
  max-width: 46rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

/* ---------- Section scaffolding ---------- */

section {
  padding-top: clamp(2.5rem, 6vw, 4rem);
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
}

section + section {
  border-top: 1px solid var(--border);
}

.section-head {
  max-width: 46rem;
  margin-bottom: clamp(1.75rem, 4vw, 2.5rem);
}

.section-kicker {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 0 0 0.5rem;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.015em;
  margin: 0 0 0.6rem;
}

.section-desc {
  color: var(--text-muted);
  margin: 0;
}

/* ---------- Lanes ---------- */

.lanes {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 860px) {
  .lanes {
    grid-template-columns: 1fr 1fr;
  }
}

.lane {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: clamp(1.25rem, 3vw, 1.75rem);
  box-shadow: var(--shadow-sm);
}

.lane-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
}

.lane-dot {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  flex: none;
}

.lane[data-lane="producer"] .lane-dot {
  background: var(--lane-a);
}

.lane[data-lane="toolchain"] .lane-dot {
  background: var(--lane-b);
}

.lane-caption {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0 0 1.25rem;
}

.lane-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.lane-step {
  display: grid;
  grid-template-columns: 1.75rem 1fr;
  gap: 0.75rem;
  position: relative;
  padding-bottom: 1.15rem;
}

.lane-step:last-child {
  padding-bottom: 0;
}

.lane-step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  z-index: 1;
}

.lane-step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: calc(1.75rem / 2 - 1px);
  top: 1.75rem;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.lane-step-body strong {
  display: block;
  font-size: 0.95rem;
}

.lane-step-body span {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.lane-step-body .pill {
  margin-top: 0.35rem;
}

.lane-cross {
  margin-top: 1.5rem;
  padding: 1rem 1.1rem;
  background: var(--bg-sunken);
  border-radius: 12px;
  font-size: 0.88rem;
  color: var(--text-muted);
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
}

.lane-cross strong {
  color: var(--text);
}

/* pills / badges */

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
}

.pill-live {
  background: var(--live-bg);
  color: var(--live-contrast);
}

.pill-live::before {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: currentColor;
}

.pill-local {
  background: var(--bg-sunken);
  color: var(--text-faint);
  border: 1px solid var(--border);
}

/* ---------- CTA cards ---------- */

.cta-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 700px) {
  .cta-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.cta-card {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  text-decoration: none;
  color: var(--text);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: clamp(1.5rem, 3vw, 2rem);
  box-shadow: var(--shadow-md);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.cta-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-strong);
}

.cta-card:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 4px;
}

.cta-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.cta-name {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
}

.cta-tagline {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.95rem;
}

.cta-foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--accent-strong);
}

.cta-foot svg {
  width: 1em;
  height: 1em;
  transition: transform 0.18s ease;
}

.cta-card:hover .cta-foot svg {
  transform: translateX(3px);
}

.cta-url {
  font-size: 0.78rem;
  color: var(--text-faint);
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Consolas, monospace;
  word-break: break-all;
}

/* ---------- Tool grid ---------- */

.tool-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .tool-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 980px) {
  .tool-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.tool-card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}

.tool-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.tool-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.tool-name {
  font-weight: 700;
  font-size: 1rem;
  margin: 0;
}

.tool-role {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 0 0 0.15rem;
}

.tool-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* ---------- Sample / gallery ---------- */

.sample-layout {
  display: grid;
  gap: 1.5rem;
  align-items: center;
  grid-template-columns: 1fr;
}

@media (min-width: 820px) {
  .sample-layout {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.sample-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

.sample-figure {
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  background: var(--bg-sunken);
}

.sample-figure img {
  width: 100%;
  height: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.sample-text h3 {
  font-size: 1.15rem;
  margin: 0 0 0.6rem;
}

.sample-text p {
  color: var(--text-muted);
  margin: 0 0 1rem;
}

.sample-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  color: var(--accent-strong);
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
}

.sample-link:hover {
  border-color: currentColor;
}

/* ---------- Footer ---------- */

.site-footer {
  padding-top: 2rem;
  padding-bottom: 5rem;
  color: var(--text-faint);
  font-size: 0.85rem;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
  justify-content: space-between;
}

.site-footer a {
  color: var(--text-muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--text);
  text-decoration: underline;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}