/* Laetoli Data — landing site. Solid fills only, no gradients. */

:root {
  /* Tanzania-tasteful palette */
  --green-deep: #0F2A1D;   /* charcoal-green, hero + footer */
  --green: #1C4332;        /* deep forest green */
  --green-700: #245C42;
  --sand: #F4EDE0;         /* warm sand */
  --sand-card: #FBF7EF;    /* lighter sand for cards on tinted sections */
  --gold: #E0A93B;         /* gold accent */
  --gold-deep: #C68F25;
  --charcoal: #20231F;     /* body text */
  --muted: #5C6157;        /* secondary text */
  --muted-soft: #7C8B7E;
  --line: #E3DDCF;         /* hairlines on sand */
  --line-dark: #2C4A3B;    /* hairlines on green */
  --paper: #FFFFFF;
  --code-bg: #11261C;      /* code panels */
  --code-text: #EAF1E9;

  --maxw: 1080px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-card: 0 1px 2px rgba(15,42,29,.05), 0 8px 24px rgba(15,42,29,.06);

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--charcoal);
  background: var(--sand);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--green); text-decoration: none; }
a:hover { color: var(--gold-deep); }

code { font-family: var(--font-mono); font-size: .92em; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; line-height: 1.12; color: var(--green-deep); letter-spacing: -0.01em; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--green-deep); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; color: #fff; }

:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; border-radius: 4px; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(244,237,224,.88);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  max-width: var(--maxw); margin: 0 auto; padding: 12px 22px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--green-deep); font-weight: 600; }
.brand-name { font-family: var(--font-display); font-size: 1.12rem; letter-spacing: -0.01em; }
.brand-mark { display: block; border-radius: 7px; }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { color: var(--muted); font-size: .94rem; font-weight: 500; }
.nav-links a:hover { color: var(--green-deep); }
.nav-cta {
  background: var(--green-deep); color: #fff !important; padding: 8px 16px; border-radius: 999px; font-size: .9rem;
}
.nav-cta:hover { background: var(--green); color: #fff !important; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 26px; border-radius: 999px; font-weight: 600; font-size: 1rem;
  border: 1.5px solid transparent; transition: transform .08s ease, background .15s ease, color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--gold); color: var(--green-deep) !important; }
.btn-primary:hover { background: var(--gold-deep); color: var(--green-deep) !important; }
.btn-ghost { background: transparent; color: var(--green-deep) !important; border-color: var(--green-deep); }
.btn-ghost:hover { background: var(--green-deep); color: var(--sand) !important; }

/* ---------- Hero ---------- */
.hero {
  background: var(--green-deep);
  color: var(--sand);
  padding: 92px 22px 84px;
  position: relative;
  border-bottom: 4px solid var(--gold);
}
.hero-inner { max-width: var(--maxw); margin: 0 auto; max-width: 760px; text-align: center; }
.eyebrow {
  text-transform: uppercase; letter-spacing: .16em; font-size: .75rem; font-weight: 600;
  color: var(--gold); margin: 0 0 18px;
}
.hero-title { font-size: clamp(2.4rem, 6vw, 4rem); color: var(--sand); margin: 0 0 22px; font-weight: 600; }
.hero-accent { color: var(--gold); }
.hero-sub { font-size: clamp(1.05rem, 2.2vw, 1.22rem); color: #E7E0D2; margin: 0 auto 14px; max-width: 600px; }
.hero-sub strong { color: #fff; }
.hero-sub-en { font-size: .98rem; color: var(--muted-soft); margin: 0 auto 30px; max-width: 560px; font-style: italic; }
.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 34px; }
.hero-badges {
  list-style: none; display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; padding: 0; margin: 0;
}
.hero-badges li {
  font-size: .82rem; color: #DCD4C4; font-weight: 500;
  border: 1px solid var(--line-dark); border-radius: 999px; padding: 6px 14px; background: rgba(255,255,255,.03);
}

/* ---------- Sections ---------- */
.section { max-width: var(--maxw); margin: 0 auto; padding: 76px 22px; }
.section-alt { max-width: none; background: var(--green); color: var(--sand); }
.section-alt > .section-head h2 { color: var(--sand); }
.section-alt .section-head, .section-alt .how-grid, .section-alt .steps, .section-alt .pi-note, .section-alt .deploy-cta {
  max-width: var(--maxw); margin-left: auto; margin-right: auto;
}
.section-head { text-align: center; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); margin: 0 0 12px; }
.section-lede { font-size: 1.05rem; color: var(--muted); margin: 0 auto; max-width: 560px; }
.section-alt .section-lede { color: #CFE0D3; }
.section-lede span { display: inline; opacity: .85; }

/* ---------- Why cards ---------- */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; box-shadow: var(--shadow-card);
}
.card-icon {
  width: 48px; height: 48px; border-radius: 12px; background: var(--sand);
  color: var(--green); display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.card h3 { font-size: 1.18rem; margin: 0 0 10px; }
.card p { margin: 0; font-size: .95rem; color: var(--muted); }
.card .en { display: block; margin-top: 8px; font-style: italic; color: var(--muted-soft); font-size: .88rem; }

/* ---------- How it works ---------- */
.how-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 40px; align-items: center; }
.diagram {
  background: var(--green-deep); border-radius: var(--radius); padding: 22px;
  border: 1px solid var(--line-dark);
}
.diagram-svg { width: 100%; height: auto; display: block; }
.d-label-light { fill: var(--sand); font-family: var(--font-body); font-size: 14px; }
.d-label-dark { fill: var(--green-deep); font-family: var(--font-body); font-size: 14px; }
.d-strong { font-weight: 600; }
.d-small { font-size: 11px; opacity: .85; }
.d-note { fill: var(--gold); font-family: var(--font-mono); font-size: 11px; }
.how-list { list-style: none; padding: 0; margin: 0 0 22px; }
.how-list li {
  padding: 12px 0 12px 22px; position: relative; border-bottom: 1px solid var(--line-dark);
  color: #DCE6DD; font-size: .96rem;
}
.how-list li:last-child { border-bottom: none; }
.how-list li::before {
  content: ""; position: absolute; left: 0; top: 19px; width: 8px; height: 8px; border-radius: 2px; background: var(--gold);
}
.how-list strong { color: #fff; }
.how-list code { background: rgba(255,255,255,.08); color: var(--gold); padding: 1px 6px; border-radius: 5px; }
.how-note { font-size: .92rem; color: #BFD2C3; font-style: italic; margin: 0; }

/* ---------- Code cards ---------- */
.code-card {
  background: var(--code-bg); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line-dark); box-shadow: var(--shadow-card); margin-bottom: 22px;
}
.code-head {
  display: flex; align-items: center; gap: 8px; padding: 11px 16px;
  background: #0B1C14; border-bottom: 1px solid var(--line-dark);
}
.code-dot { width: 11px; height: 11px; border-radius: 50%; background: #2C4A3B; }
.code-dot:nth-child(1) { background: #C75C4E; }
.code-dot:nth-child(2) { background: var(--gold); }
.code-dot:nth-child(3) { background: var(--green-700); }
.code-file { color: var(--muted-soft); font-family: var(--font-mono); font-size: .82rem; margin-left: 6px; }
.copy-btn {
  margin-left: auto; background: transparent; border: 1px solid var(--line-dark); color: var(--code-text);
  font-family: var(--font-body); font-size: .8rem; padding: 5px 12px; border-radius: 7px; cursor: pointer;
  transition: background .15s ease, border-color .15s ease;
}
.copy-btn:hover { background: rgba(224,169,59,.14); border-color: var(--gold); }
.copy-btn.copied { color: var(--gold); border-color: var(--gold); }
.code-block {
  margin: 0; padding: 20px; overflow-x: auto; color: var(--code-text);
  font-family: var(--font-mono); font-size: .86rem; line-height: 1.7; tab-size: 2;
}
.code-block code { color: inherit; }
.diff-add { color: #8FD49A; display: block; }
.diff-del { color: #E08C84; display: block; }
.sdk-note { font-size: .95rem; color: var(--muted); max-width: 760px; }
.sdk-note code { background: var(--paper); border: 1px solid var(--line); padding: 1px 6px; border-radius: 5px; color: var(--green); }

/* ---------- Deploy steps ---------- */
.steps { list-style: none; padding: 0; margin: 0 0 36px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step {
  background: var(--sand-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px;
}
.step-num {
  display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px;
  border-radius: 50%; background: var(--green-deep); color: var(--gold); font-family: var(--font-display);
  font-weight: 700; font-size: 1.15rem; margin-bottom: 16px;
}
.step-body h3 { font-size: 1.12rem; margin: 0 0 6px; }
.step-body p { margin: 0 0 14px; font-size: .92rem; color: var(--muted); }
.code-inline {
  margin: 0; background: var(--code-bg); color: var(--code-text); border-radius: var(--radius-sm);
  padding: 12px 14px; font-family: var(--font-mono); font-size: .82rem; overflow-x: auto;
}
.code-inline code { color: var(--code-text); }

.pi-note {
  display: flex; gap: 18px; align-items: flex-start; background: var(--sand-card);
  border: 1px solid var(--line); border-left: 4px solid var(--gold); border-radius: var(--radius);
  padding: 24px; margin-bottom: 32px;
}
.pi-note-icon {
  flex-shrink: 0; width: 44px; height: 44px; border-radius: 11px; background: var(--green-deep); color: var(--gold);
  display: flex; align-items: center; justify-content: center;
}
.pi-note h3 { font-size: 1.1rem; margin: 0 0 6px; }
.pi-note p { margin: 0; font-size: .94rem; color: var(--muted); }
.pi-note code { background: var(--paper); border: 1px solid var(--line); padding: 1px 5px; border-radius: 4px; color: var(--green); }
.deploy-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- Footer ---------- */
.site-footer { background: var(--green-deep); color: var(--sand); padding: 56px 22px 40px; border-top: 4px solid var(--gold); }
.footer-inner { max-width: var(--maxw); margin: 0 auto; text-align: center; }
.footer-brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-display); font-size: 1.15rem; color: var(--sand); margin-bottom: 8px; }
.footer-tag { color: var(--gold); font-style: italic; margin: 0 0 22px; font-family: var(--font-display); }
.footer-links { display: flex; gap: 24px; justify-content: center; margin-bottom: 22px; flex-wrap: wrap; }
.footer-links a { color: #DCD4C4; font-weight: 500; font-size: .95rem; }
.footer-links a:hover { color: var(--gold); }
.footer-legal { font-size: .82rem; color: var(--muted-soft); margin: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .how-grid { grid-template-columns: 1fr; gap: 28px; }
  .steps { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav-links { gap: 14px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .hero { padding: 64px 20px 58px; }
  .section { padding: 56px 20px; }
  .section-alt { padding: 56px 20px; }
  .cards { grid-template-columns: 1fr; }
  .pi-note { flex-direction: column; gap: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}