/* ===========================================================
   VeriPath Africa — Landing Page
   Design tokens: deep pasture ink, sun-canvas paper,
   cassava green (Crops), murram rust (Livestock), savanna gold.
   =========================================================== */

:root {
  --ink: #14201A;
  --ink-soft: #1D2C22;
  --paper: #EFEBDA;
  --paper-soft: #F7F4E8;
  --crops: #4C7A3C;
  --crops-deep: #2F4E27;
  --crops-tint: #E4EBDD;
  --livestock: #B85A2C;
  --livestock-deep: #7A3A1B;
  --livestock-tint: #F1E1D4;
  --gold: #D2A73E;
  --text: #1B2318;
  --text-muted: #566150;
  --text-on-ink: #EFEBDA;
  --text-on-ink-muted: #A9B4A0;

  --font-display: "Fraunces", serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;

  --max-width: 1180px;
  --radius: 10px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--paper-soft);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

a { color: inherit; text-decoration: none; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  margin: 0 0 0.4em;
  color: var(--text);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 0.8em;
}

.eyebrow-crops { color: var(--crops-deep); }
.eyebrow-livestock { color: var(--livestock-deep); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85em 1.6em;
  border-radius: 999px;
  border: 1.5px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}
.btn-large { padding: 1em 2.1em; font-size: 1.02rem; }

.btn-crops { background: var(--crops); color: #fff; }
.btn-crops:hover { background: var(--crops-deep); }

.btn-livestock { background: var(--livestock); color: #fff; }
.btn-livestock:hover { background: var(--livestock-deep); }

.btn-gold { background: var(--gold); color: var(--ink); }
.btn-gold:hover { background: #bf9430; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(239, 235, 218, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(27, 35, 24, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
}
.logo-mark {
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text);
}
.main-nav a:hover { color: var(--crops-deep); }
.main-nav .nav-cta {
  background: var(--ink);
  color: var(--paper);
  padding: 0.55em 1.2em;
  border-radius: 999px;
}
.main-nav .nav-cta:hover { background: var(--ink-soft); color: var(--paper); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  background: var(--ink);
  color: var(--text-on-ink);
  padding: 96px 0 84px;
  text-align: center;
  overflow: hidden;
}

.hero-inner { position: relative; z-index: 2; max-width: 760px; margin: 0 auto; }

.stamp {
  width: 92px;
  height: 92px;
  margin: 0 auto 28px;
  color: var(--gold);
  opacity: 0.9;
  transform: rotate(-8deg);
}
.stamp svg { width: 100%; height: 100%; }
.stamp-text-top, .stamp-text-bottom {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.06em;
  fill: var(--gold);
}

.hero .eyebrow { color: var(--text-on-ink-muted); text-align: center; }

.hero h1 {
  font-size: clamp(2.3rem, 5vw, 3.4rem);
  color: var(--paper);
  font-weight: 600;
}

.hero-sub {
  font-size: 1.08rem;
  color: var(--text-on-ink-muted);
  max-width: 560px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.hero-trial {
  display: inline-block;
  font-size: 0.88rem;
  color: var(--text-on-ink-muted);
  border-bottom: 1px solid rgba(169, 180, 160, 0.4);
  padding-bottom: 2px;
}
.hero-trial:hover { color: var(--gold); border-color: var(--gold); }

/* ---------- demo ---------- */
.demo { padding: 72px 0; text-align: center; background: var(--paper-soft); }
.demo-frame {
  margin-top: 28px;
  aspect-ratio: 16/9;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
  background: var(--ink);
  border-radius: var(--radius);
  color: var(--text-on-ink-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

/* ---------- how it works / ledger ---------- */
.how { padding: 88px 0; background: var(--paper-soft); }
.how .eyebrow { text-align: center; }
.how h2 {
  text-align: center;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin-bottom: 56px;
}

.ledger {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(27, 35, 24, 0.12);
}

.ledger-step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(27, 35, 24, 0.12);
}

.ledger-num {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--gold);
  background: var(--ink);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ledger-step h3 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.25em;
}
.ledger-step p { margin: 0; color: var(--text-muted); max-width: 520px; }

.ledger-fork .fork {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 10px;
}
.ledger-fork .fork p {
  margin: 0;
  max-width: none;
  background: var(--paper);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.fork-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2em 0.6em;
  border-radius: 999px;
  margin-right: 8px;
  color: #fff;
}
.fork-tag-crops { background: var(--crops); }
.fork-tag-livestock { background: var(--livestock); }

/* ---------- module sections ---------- */
.module { padding: 96px 0; }
.module-crops { background: var(--crops-tint); }
.module-livestock { background: var(--livestock-tint); }

.module-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.module-inner-reverse .module-copy { order: 2; }
.module-inner-reverse .module-visual { order: 1; }

.module h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
}
.module-lede {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 28px;
}

.feature-list {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
  display: grid;
  gap: 14px;
}
.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.98rem;
}

.stamp-mark {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border-radius: 50%;
  border: 2px solid var(--crops);
  position: relative;
}
.stamp-mark::after {
  content: "";
  position: absolute;
  top: 3px; left: 5px;
  width: 6px; height: 3px;
  border-left: 2px solid var(--crops);
  border-bottom: 2px solid var(--crops);
  transform: rotate(-45deg);
}
.stamp-mark-livestock { border-color: var(--livestock); }
.stamp-mark-livestock::after { border-color: var(--livestock); }

.pricing {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}
.price-tier {
  background: var(--paper-soft);
  border-radius: var(--radius);
  padding: 12px 18px;
  min-width: 150px;
}
.price-name {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.price-amount { font-weight: 700; font-size: 1.05rem; }
.price-amount span { font-weight: 500; font-size: 0.78rem; color: var(--text-muted); }

.visual-placeholder {
  aspect-ratio: 4/5;
  border-radius: var(--radius);
  border: 1.5px dashed rgba(27, 35, 24, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  background: repeating-linear-gradient(
    135deg,
    rgba(27, 35, 24, 0.04),
    rgba(27, 35, 24, 0.04) 10px,
    transparent 10px,
    transparent 20px
  );
}

/* ---------- trust strip ---------- */
.trust { background: var(--ink); padding: 24px 0; }
.trust-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  text-align: center;
}
.trust-inner p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-on-ink-muted);
}
.trust-dot { color: var(--gold); }

/* ---------- final CTA ---------- */
.final-cta {
  padding: 96px 0;
  text-align: center;
  background: var(--paper-soft);
}
.final-cta h2 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); }
.final-cta p { color: var(--text-muted); margin-bottom: 32px; }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: var(--text-on-ink-muted); padding: 56px 0 40px; }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 32px;
}
.logo-footer { color: var(--paper); }
.footer-tag { max-width: 260px; font-size: 0.88rem; margin-top: 10px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; font-size: 0.9rem; }
.footer-links a:hover { color: var(--gold); }
.footer-contact { font-size: 0.85rem; text-align: right; }
.footer-contact p { margin: 0 0 6px; }

/* ---------- whatsapp float ---------- */
.whatsapp-float {
  position: fixed;
  bottom: 22px;
  right: 22px;
  width: 54px;
  height: 54px;
  background: #25D366;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 18px rgba(0,0,0,0.25);
  z-index: 40;
}
.whatsapp-float svg { width: 28px; height: 28px; }
.whatsapp-float:hover { transform: scale(1.06); }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .module-inner { grid-template-columns: 1fr; gap: 40px; }
  .module-inner-reverse .module-copy { order: 1; }
  .module-inner-reverse .module-visual { order: 2; }
  .ledger-fork .fork { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper-soft);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 20px;
    border-bottom: 1px solid rgba(27,35,24,0.08);
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 0; width: 100%; }
  .main-nav .nav-cta { margin-top: 8px; text-align: center; }
  .nav-toggle { display: flex; }
  .hero { padding: 72px 0 60px; }
  .ledger-step { grid-template-columns: 44px 1fr; }
}