/* =========================================================
   TEXAS RIPARIAN PROJECT — DESIGN SYSTEM
   Palette grounded in the Hill Country creek corridor:
   limestone bank, cypress canopy, spring-fed water, live-oak
   bark, and clay soil. Layout uses a recurring cross-section
   motif (upland > riparian buffer > creek > recharge zone)
   instead of generic cards.
   ========================================================= */

:root{
  --limestone:   #EFE9DA;
  --limestone-2: #E3DBC6;
  --cream:       #F8F5EC;
  --ink:         #23281F;
  --cypress:     #2E4A3D;
  --cypress-dk:  #1C3028;
  --spring:      #3E7C79;
  --spring-dk:   #2B5B58;
  --clay:        #A8502E;
  --clay-dk:     #813C22;
  --bark:        #4A3A29;
  --gold:        #C89A3C;
  --line:        rgba(35,40,31,0.16);

  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --max: 1180px;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color: var(--spring-dk); text-decoration-thickness: 1px; }
a:hover{ color: var(--clay); }
h1,h2,h3,h4{
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.15;
  color: var(--cypress-dk);
  margin: 0 0 0.5em;
}
h1{ font-size: clamp(2.4rem, 4vw, 3.6rem); font-weight: 500; }
h2{ font-size: clamp(1.7rem, 2.6vw, 2.4rem); }
h3{ font-size: 1.3rem; }
p{ margin: 0 0 1.1em; max-width: 68ch; }
.wrap{ max-width: var(--max); margin: 0 auto; padding: 0 32px; }
section{ padding: 88px 0; }
.section-tight{ padding: 56px 0; }

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

/* ---------- Header ---------- */
.site-header{
  background: var(--cream);
  border-bottom: 1px solid var(--line);
  position: sticky; top:0; z-index: 50;
}
.header-inner{
  max-width: var(--max); margin:0 auto; padding: 18px 32px;
  display:flex; align-items:center; justify-content:space-between; gap: 24px;
}
.brand{ display:flex; align-items:center; gap:12px; text-decoration:none; }
.brand-mark{ width:40px; height:40px; flex:none; }
.brand-text{ font-family: var(--serif); font-size:1.18rem; color: var(--cypress-dk); line-height:1.15; }
.brand-text small{ display:block; font-family: var(--sans); font-size:0.68rem; letter-spacing:.04em; color: var(--spring-dk); font-weight:600; }

.main-nav ul{ list-style:none; display:flex; gap:28px; margin:0; padding:0; }
.main-nav a{
  color: var(--ink); text-decoration:none; font-weight:600; font-size:0.96rem;
  padding: 6px 2px; border-bottom: 2px solid transparent;
}
.main-nav a:hover, .main-nav a.is-active{ border-bottom-color: var(--clay); color: var(--cypress-dk); }
.header-cta{
  display:inline-block; background: var(--clay); color:#fff; padding:11px 20px;
  border-radius: 3px; font-weight:700; font-size:0.92rem; text-decoration:none; flex:none;
}
.header-cta:hover{ background: var(--clay-dk); color:#fff; }
.nav-toggle{ display:none; background:none; border:1px solid var(--line); border-radius:4px; padding:8px 10px; }

@media (max-width: 880px){
  .main-nav{ display:none; width:100%; order:3; }
  .main-nav.is-open{ display:block; }
  .main-nav ul{ flex-direction:column; gap:4px; padding: 16px 0; }
  .header-inner{ flex-wrap:wrap; }
  .nav-toggle{ display:block; }
}

/* ---------- Hero ---------- */
.hero{
  background: linear-gradient(180deg, var(--limestone) 0%, var(--cream) 100%);
  border-bottom: 1px solid var(--line);
  overflow:hidden;
}
.hero-inner{
  max-width: var(--max); margin:0 auto; padding: 76px 32px 0;
  display:grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items:end;
}
.hero-eyebrow{ color: var(--spring-dk); font-weight:700; font-size:0.85rem; letter-spacing:.02em; margin-bottom:14px; }
.hero h1{ margin-bottom: 22px; }
.hero p.lede{ font-size:1.15rem; max-width:52ch; color:#3a3f34; }
.hero-actions{ display:flex; gap:14px; margin-top:28px; flex-wrap:wrap; }
.btn{
  display:inline-block; padding:13px 24px; border-radius:3px; font-weight:700;
  text-decoration:none; font-size:0.97rem; border:1px solid transparent; cursor:pointer;
}
.btn-primary{ background: var(--cypress); color:#fff; }
.btn-primary:hover{ background: var(--cypress-dk); color:#fff; }
.btn-outline{ border-color: var(--cypress); color: var(--cypress-dk); background:transparent; }
.btn-outline:hover{ background: var(--cypress); color:#fff; }
.btn-clay{ background: var(--clay); color:#fff; }
.btn-clay:hover{ background: var(--clay-dk); color: #fff; }

.hero-diagram{ width:100%; height:auto; }
.hero-diagram-wrap{ padding-bottom: 0; }

/* Cross-section diagram legend, reused across pages */
.xsection-caption{
  font-size:0.85rem; color:#5a5f52; padding: 10px 4px 0; border-top:1px solid var(--line); margin-top:8px;
}

@media (max-width: 880px){
  .hero-inner{ grid-template-columns: 1fr; padding-top: 48px; }
}

/* ---------- Stat strip ---------- */
.stat-strip{ background: var(--cypress-dk); color:#EFE9DA; }
.stat-grid{ display:grid; grid-template-columns: repeat(4,1fr); gap:32px; padding: 46px 0; }
.stat{ border-left: 2px solid rgba(239,233,218,0.3); padding-left:18px; }
.stat .num{ font-family: var(--serif); font-size:2.3rem; color:#fff; display:block; }
.stat .label{ font-size:0.88rem; color:#c9d3c5; }
@media (max-width: 880px){ .stat-grid{ grid-template-columns: repeat(2,1fr); } }

/* ---------- Pillars / three-column ---------- */
.pillars{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.pillar{ padding: 40px 36px; border-left: 1px solid var(--line); }
.pillar:first-child{ border-left:none; }
.pillar .pillar-index{ font-family:var(--serif); color: var(--gold); font-size:1rem; margin-bottom:10px; }
@media (max-width: 880px){
  .pillars{ grid-template-columns: 1fr; }
  .pillar{ border-left:none; border-top:1px solid var(--line); }
  .pillar:first-child{ border-top:none; }
}

/* ---------- Two column content ---------- */
.two-col{ display:grid; grid-template-columns: 1fr 1fr; gap:64px; align-items:start; }
.two-col.reverse{ direction: rtl; }
.two-col.reverse > *{ direction: ltr; }
@media (max-width: 880px){ .two-col{ grid-template-columns:1fr; gap:32px; } }

.section-head{ max-width: 62ch; margin-bottom: 40px; }
.section-head .kicker{ color: var(--clay); font-weight:700; font-size:0.85rem; margin-bottom:10px; display:block; }

/* ---------- Plant grid ---------- */
.plant-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap: 1px; background: var(--line); border:1px solid var(--line); }
.plant-card{ background: var(--cream); display:flex; flex-direction:column; }
.plant-card-photo{ width:100%; height:190px; object-fit:cover; display:block; }
.plant-card-body{ padding: 26px 28px; }
.single-plant-photo{ width:100%; height:auto; max-height:480px; object-fit:cover; display:block; }
.plant-card h3{ margin-bottom:4px; }
.plant-card .latin{ font-style: italic; color:#6a7062; font-size:0.9rem; display:block; margin-bottom:12px; }
.plant-tags{ display:flex; gap:8px; flex-wrap:wrap; margin-top:14px; }
.tag{ font-size:0.72rem; font-weight:700; color: var(--spring-dk); border:1px solid var(--spring); padding:3px 9px; border-radius:20px; }
.tag.tag-exception{ color: var(--clay-dk); border-color: var(--clay); }

/* ---------- Featured plant card (e.g. the Ashe Juniper exception) ---------- */
.plant-featured{ display:grid; grid-template-columns: 380px 1fr; border:2px solid var(--clay); background: var(--cream); margin-bottom: 2px; }
.plant-featured-media{ min-height:100%; }
.plant-featured-media img{ width:100%; height:100%; min-height:280px; object-fit:cover; display:block; }
.plant-featured-body{ padding: 34px 38px; }
.plant-featured-label{ display:inline-block; background: var(--clay); color:#fff; font-size:0.72rem; font-weight:700; letter-spacing:.05em; padding:5px 11px; border-radius:3px; margin-bottom:14px; }
.plant-featured-body h2{ margin-bottom:2px; }
@media (max-width: 880px){
  .plant-featured{ grid-template-columns: 1fr; }
  .plant-featured-media img{ height:220px; min-height:0; }
}

/* ---------- Callout / admonition ---------- */
.callout{ border-left:4px solid var(--clay); background: var(--limestone); padding: 20px 24px; margin: 28px 0; }
.callout .callout-label{ display:block; font-weight:700; color: var(--clay-dk); font-size:0.78rem; letter-spacing:.04em; margin-bottom:8px; }
.callout p:last-child{ margin-bottom:0; }
@media (max-width: 880px){ .plant-grid{ grid-template-columns: 1fr; } }

/* ---------- Timeline / process ---------- */
.process{ border-top:1px solid var(--line); }
.process-row{ display:grid; grid-template-columns: 90px 1fr; gap: 24px; padding: 30px 0; border-bottom:1px solid var(--line); }
.process-row .step-num{ font-family: var(--serif); font-size:2rem; color: var(--limestone-2); }

/* ---------- Watershed / county list ---------- */
.chip-list{ display:flex; flex-wrap:wrap; gap:10px; }
.chip{ background: var(--limestone); border:1px solid var(--line); padding:7px 14px; border-radius:20px; font-size:0.88rem; }

/* ---------- Cards (events / news) ---------- */
.card-row{ display:grid; grid-template-columns: repeat(3,1fr); gap:28px; }
.event-card{ border:1px solid var(--line); background:#fff; padding:0; }
.event-card .event-date{ background: var(--cypress); color:#fff; padding:10px 18px; font-weight:700; font-size:0.85rem; }
.event-card .event-body{ padding: 20px 22px 24px; }
@media (max-width: 880px){ .card-row{ grid-template-columns: 1fr; } }

/* ---------- Quote / pull ---------- */
.pullquote{ border-left: 3px solid var(--clay); padding: 6px 0 6px 28px; font-family: var(--serif); font-size:1.4rem; color: var(--cypress-dk); max-width:56ch; }
.pullquote cite{ display:block; font-family: var(--sans); font-size:0.85rem; color:#6a7062; margin-top:12px; font-style:normal; }

/* ---------- Forms ---------- */
.trp-form{ max-width: 560px; }
.trp-form label{ display:block; font-weight:700; font-size:0.88rem; margin: 16px 0 6px; }
.trp-form input, .trp-form textarea, .trp-form select{
  width:100%; padding:11px 12px; border:1px solid var(--line); border-radius:3px; font-family:var(--sans); font-size:0.97rem; background:#fff;
}
.trp-form textarea{ min-height: 140px; }
.trp-form .submit-row{ margin-top:22px; }

/* ---------- CTA band ---------- */
.cta-band{ background: var(--spring); color:#fff; }
.cta-band h2{ color:#fff; }
.cta-band .wrap{ display:flex; align-items:center; justify-content:space-between; gap:32px; flex-wrap:wrap; padding: 54px 32px; }
.cta-band p{ color:#e2f0ee; }

/* ---------- Footer ---------- */
.site-footer{ background: var(--cypress-dk); color:#d4dccd; }
.footer-grid{ display:grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 40px; padding: 64px 0 40px; }
.site-footer h4{ color:#fff; font-family:var(--sans); font-size:0.82rem; letter-spacing:.03em; margin-bottom:16px; }
.site-footer ul{ list-style:none; padding:0; margin:0; }
.site-footer li{ margin-bottom:9px; }
.site-footer a{ color:#c3ceba; text-decoration:none; }
.site-footer a:hover{ color:#fff; }
.footer-bottom{ border-top: 1px solid rgba(255,255,255,0.12); padding: 22px 32px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; font-size:0.85rem; color:#9fac93; }
@media (max-width: 880px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }

/* ---------- Photography ---------- */
.media-frame{ border:1px solid var(--line); overflow:hidden; }
.media-frame img{ width:100%; height:100%; object-fit:cover; display:block; }
.media-caption{ font-size:0.82rem; color:#5a5f52; padding-top:8px; }

.photo-band{ position:relative; overflow:hidden; }
.photo-band img{ width:100%; height:56vh; max-height:520px; min-height:320px; object-fit:cover; display:block; }
.photo-band .band-caption{
  position:absolute; left:0; right:0; bottom:0;
  background:linear-gradient(0deg, rgba(28,48,40,0.88) 0%, rgba(28,48,40,0.35) 60%, rgba(28,48,40,0) 100%);
  color:#EFE9DA; padding: 60px 32px 24px;
}
.photo-band .band-caption .wrap{ padding:0; max-width: var(--max); margin:0 auto; }
.photo-band .band-caption p{ color:#dfe6d8; max-width:52ch; margin:0; font-size:0.95rem; }
.photo-band .band-caption strong{ color:#fff; }

.photo-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:2px; background:var(--line); }
.photo-grid figure{ margin:0; background:var(--cream); }
.photo-grid img{ width:100%; height:260px; object-fit:cover; display:block; }
.photo-grid figcaption{ font-size:0.82rem; padding:10px 14px 14px; color:#4a4f42; }
@media (max-width: 880px){ .photo-grid{ grid-template-columns: 1fr; } }

.hero-photo{ width:100%; height:auto; border:1px solid var(--line); }
.hero-photo-caption{ font-size:0.85rem; color:#5a5f52; padding-top:10px; border-top:1px solid var(--line); margin-top:8px; }

.media-centered{ max-width: 640px; margin: 0 auto; text-align: center; }
.media-centered .media-frame{ display:inline-block; width:100%; }

.cta-band.has-bg{ position:relative; background-size:cover; background-position:center; }
.cta-band.has-bg::before{ content:""; position:absolute; inset:0; background: linear-gradient(90deg, rgba(43,91,88,0.94) 0%, rgba(43,91,88,0.8) 100%); }
.cta-band.has-bg .wrap{ position:relative; z-index:1; }

/* ---------- Utility ---------- */
.bg-limestone{ background: var(--limestone); }
.bg-cypress{ background: var(--cypress-dk); color: #EFE9DA; }
.bg-cypress h2, .bg-cypress h3{ color:#fff; }
.center{ text-align:center; margin-left:auto; margin-right:auto; }
.mt-0{ margin-top:0; }
.small{ font-size:0.88rem; color:#5a5f52; }
.divider{ border:none; border-top:1px solid var(--line); margin: 56px 0; }
.skip-link{ position:absolute; left:-999px; top:auto; background:#fff; padding:10px; }
.skip-link:focus{ left: 16px; top: 16px; z-index: 999; }

/* Blog / single content */
.content-narrow{ max-width: 720px; margin: 0 auto; }
.post-meta{ color:#6a7062; font-size:0.88rem; margin-bottom: 26px; }
.entry-content h2{ margin-top:1.4em; }
.entry-content ul{ padding-left:1.2em; }
.entry-content blockquote{ border-left:3px solid var(--clay); padding-left:20px; font-style:italic; color:#3a3f34; }

/* 404 */
.error-404{ text-align:center; padding: 120px 0; }