/* Strata Society — shared stylesheet. System fonts only, no external resources. */

:root {
  --bg: #fbf7ef;
  --surface: #ffffff;
  --ink: #23201a;
  --ink-soft: #5c574d;
  --line: #e6ddcb;
  --green: #2f6f5e;
  --green-dark: #234f43;
  --amber: #c98a3a;
  --band: #223c33;
  --radius: 14px;
  --wrap: 1080px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  font-size: 18px;
  line-height: 1.6;
}

h1, h2, h3, .brand-text, .nav, .btn, .eyebrow, .stat-label, .event-mon, .foot-nav {
  font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

img, svg { max-width: 100%; height: auto; display: block; }

a { color: var(--green-dark); }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--green);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 8px 0;
  z-index: 20;
}
.skip:focus { left: 0; }

/* Header */
.site-head {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}
.head-inner {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}
.brand-mark { flex: none; }
.brand-text {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.2px;
}
.brand-accent { color: var(--green); }

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  font-size: 0.98rem;
}
.nav a {
  text-decoration: none;
  color: var(--ink-soft);
  padding: 4px 2px;
  border-bottom: 2px solid transparent;
}
.nav a:hover { color: var(--green-dark); }
.nav a[aria-current="page"] {
  color: var(--green-dark);
  border-bottom-color: var(--amber);
}

/* Hero */
.hero {
  background:
    radial-gradient(1200px 400px at 80% -10%, rgba(47,111,94,0.10), transparent),
    var(--bg);
  padding: 48px 0 20px;
}
.hero-grid {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
  align-items: center;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: 0.75rem;
  color: var(--amber);
  margin: 0 0 10px;
  font-weight: 700;
}
h1 {
  font-size: clamp(1.9rem, 5vw, 3rem);
  line-height: 1.1;
  margin: 0 0 16px;
}
.lede {
  font-size: 1.15rem;
  color: var(--ink-soft);
  margin: 0 0 22px;
  max-width: 46ch;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-block;
  text-decoration: none;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  border: 2px solid transparent;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); }
.btn-ghost { border-color: var(--green); color: var(--green-dark); }
.btn-ghost:hover { background: rgba(47,111,94,0.08); }

.hero-art {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(35,60,51,0.12);
}

/* Sections */
.section { padding: 44px 0; }
.section-title {
  font-size: 1.6rem;
  margin: 0 0 22px;
}
.page-head {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  padding: 40px 0;
}

/* Cards */
.cards {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.card h3 { margin: 0 0 8px; color: var(--green-dark); }
.card p { margin: 0; color: var(--ink-soft); }

/* Stats band */
.band { background: var(--band); color: #f1ede2; }
.band-inner {
  display: grid;
  gap: 22px;
  grid-template-columns: 1fr;
  text-align: center;
  padding: 34px 20px;
}
.stat {
  display: block;
  font-size: 2.2rem;
  font-weight: 700;
  color: #fff;
}
.stat-label {
  display: block;
  font-size: 0.85rem;
  letter-spacing: 0.3px;
  color: #cfe0d8;
}

/* Notes */
.notes {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}
.note {
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 4px solid var(--amber);
  border-radius: var(--radius);
  padding: 22px;
}
.note h3 { margin: 0 0 8px; }
.note p { margin: 0 0 8px; color: var(--ink-soft); }
.note-meta {
  font-size: 0.82rem;
  color: var(--amber);
  letter-spacing: 0.3px;
  margin: 0;
}
.center-cta { text-align: center; margin-top: 26px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* Prose */
.prose { max-width: 70ch; }
.prose h2 { margin: 34px 0 10px; font-size: 1.4rem; }
.prose p { margin: 0 0 16px; }
.list { margin: 0 0 16px; padding-left: 1.2em; }
.list li { margin-bottom: 8px; }

.callout {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  margin-top: 32px;
}
.callout h2 { margin: 0 0 10px; font-size: 1.3rem; }
.callout p { color: var(--ink-soft); }

/* Field guide */
.guide-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}
.species {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.species-body { padding: 20px; }
.species-body h2 { margin: 0 0 4px; font-size: 1.3rem; }
.species-tag {
  font-family: "Segoe UI", system-ui, sans-serif;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--amber);
  margin: 0 0 10px;
}
.species-body p:last-child { margin: 0; color: var(--ink-soft); }

/* Events */
.events { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.event {
  display: flex;
  gap: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  align-items: flex-start;
}
.event-date {
  flex: none;
  width: 64px;
  text-align: center;
  background: var(--green);
  color: #fff;
  border-radius: 10px;
  padding: 10px 0;
}
.event-day { display: block; font-size: 1.6rem; font-weight: 700; line-height: 1; }
.event-mon { display: block; text-transform: uppercase; font-size: 0.72rem; letter-spacing: 1px; }
.event-info h3 { margin: 0 0 6px; font-size: 1.15rem; }
.event-info p { margin: 0 0 6px; color: var(--ink-soft); }
.event-meta { font-size: 0.85rem; color: var(--green-dark); }

/* Error page */
.error-page { text-align: center; padding: 60px 0; max-width: 640px; margin: 0 auto; }
.error-art { max-width: 360px; margin: 0 auto 24px; border-radius: var(--radius); overflow: hidden; }

/* Footer */
.site-foot {
  background: var(--band);
  color: #d9e3dd;
  margin-top: 20px;
}
.foot-inner {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
  padding: 40px 20px 20px;
}
.foot-brand .brand-text { color: #fff; }
.foot-note { color: #b9cbc2; font-size: 0.9rem; margin: 8px 0 0; max-width: 34ch; }
.foot-nav { display: flex; flex-direction: column; gap: 8px; }
.foot-nav a { color: #d9e3dd; text-decoration: none; }
.foot-nav a:hover { color: #fff; }
.foot-contact { margin: 0; }
.foot-contact a { color: #f0c48a; }
.copyright {
  text-align: center;
  font-size: 0.82rem;
  color: #9db3aa;
  border-top: 1px solid rgba(255,255,255,0.12);
  margin: 0;
  padding: 16px 20px 26px;
}

/* Responsive */
@media (min-width: 640px) {
  .head-inner { flex-direction: row; align-items: center; justify-content: space-between; }
  .cards { grid-template-columns: repeat(3, 1fr); }
  .notes { grid-template-columns: repeat(2, 1fr); }
  .band-inner { grid-template-columns: repeat(3, 1fr); }
  .guide-grid { grid-template-columns: repeat(2, 1fr); }
  .foot-inner { grid-template-columns: 1.5fr 1fr 1fr; align-items: start; }
  .foot-nav { flex-direction: column; }
}

@media (min-width: 900px) {
  .hero { padding: 72px 0 40px; }
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; }
}