/* SoulOS project site — GitHub Pages
 *
 * Figtree + Fraunces are loaded from Google Fonts under SIL OFL-1.1.
 * If these fonts are ever vendored into the repo, ship the OFL license
 * text beside the font files (see THIRD_PARTY_NOTICES.md).
 */
@import url("https://fonts.googleapis.com/css2?family=Figtree:wght@400;500;600;700&family=Fraunces:opsz,wght@9..144,500;9..144,700&display=swap");

:root {
  --ink: #0c1419;
  --ink-2: #152229;
  --panel: #1a2a33;
  --line: rgba(232, 220, 196, 0.14);
  --text: #f2ebe0;
  --muted: #a9b4b8;
  --accent: #3ecfba;
  --accent-2: #e8b86d;
  --danger: #e07a6c;
  --radius: 14px;
  --max: 1080px;
  --font: "Figtree", system-ui, sans-serif;
  --display: "Fraunces", Georgia, serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(62, 207, 186, 0.16), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(232, 184, 109, 0.12), transparent 50%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 45%, #101a20 100%);
  line-height: 1.55;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: #7fe4d4;
}

img {
  max-width: 100%;
}

.site-shell {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(12, 20, 25, 0.72);
  border-bottom: 1px solid var(--line);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  color: var(--text);
  text-decoration: none;
  font-family: var(--display);
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 0.45rem;
  background: linear-gradient(145deg, var(--accent), #1f8f82);
  color: var(--ink);
  font-family: var(--font);
  font-weight: 700;
  font-size: 0.95rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.85rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--text);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border-radius: 999px;
  padding: 0.7rem 1.15rem;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

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

.btn-primary {
  background: var(--accent);
  color: var(--ink);
}

.btn-primary:hover {
  background: #63ddcb;
  color: var(--ink);
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: rgba(62, 207, 186, 0.45);
  color: var(--text);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.hero {
  padding: 2.5rem 0 2.75rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.hero h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  max-width: 14ch;
}

.hero .lede {
  margin: 1rem 0 0;
  max-width: 38rem;
  color: var(--muted);
  font-size: 1.15rem;
}

.hero-flow {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-flow code {
  background: rgba(62, 207, 186, 0.12);
  border: 1px solid rgba(62, 207, 186, 0.28);
  color: #b8f3e8;
  padding: 0.35rem 0.55rem;
  border-radius: 0.5rem;
  font-size: 0.85rem;
}

.section {
  padding: 2.75rem 0;
  border-top: 1px solid var(--line);
}

.section h2 {
  margin: 0 0 0.5rem;
  font-family: var(--display);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  letter-spacing: -0.02em;
}

.section .sub {
  margin: 0 0 1.5rem;
  color: var(--muted);
  max-width: 40rem;
}

.path-grid,
.trust-grid,
.adopter-grid,
.doc-grid {
  display: grid;
  gap: 1rem;
}

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

.trust-grid {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.adopter-grid,
.doc-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.path-tile,
.trust-tile,
.adopter-card,
.doc-card {
  border: 1px solid var(--line);
  background: rgba(26, 42, 51, 0.55);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
}

.path-tile h3,
.doc-card h3,
.adopter-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.path-tile p,
.doc-card p,
.adopter-card p,
.trust-tile p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.path-tile a,
.doc-card a,
.adopter-card a {
  text-decoration: none;
  color: inherit;
  display: block;
  height: 100%;
}

.path-tile:hover,
.doc-card:hover,
.adopter-card:hover {
  border-color: rgba(62, 207, 186, 0.4);
}

.trust-tile strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--accent-2);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.page-hero {
  padding: 2.75rem 0 1.25rem;
}

.page-hero h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  letter-spacing: -0.02em;
}

.page-hero p {
  margin: 0.75rem 0 0;
  color: var(--muted);
  max-width: 40rem;
  font-size: 1.05rem;
}

.prose-block {
  padding-bottom: 3rem;
}

.prose-block h2 {
  font-family: var(--display);
  margin: 2rem 0 0.6rem;
  font-size: 1.45rem;
}

.prose-block p,
.prose-block li {
  color: var(--muted);
}

.prose-block code,
.prose-block pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.prose-block pre {
  overflow-x: auto;
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  color: #e6fff9;
  font-size: 0.88rem;
}

.prose-block ul {
  padding-left: 1.2rem;
}

.faq-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(26, 42, 51, 0.55);
  padding: 0.85rem 1.1rem;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  list-style-position: outside;
}

.faq-item summary:hover {
  color: var(--accent);
}

.faq-item p {
  margin: 0.75rem 0 0.15rem;
  color: var(--muted);
  max-width: 46rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 2.5rem;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.2rem;
}

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

.footer-links a:hover {
  color: var(--text);
}

@media (max-width: 720px) {
  .nav .hide-sm {
    display: none;
  }

  .hero {
    padding-top: 1.75rem;
  }
}