/* assets/css/irmin.css */

/* =========================
   Design tokens + premium UX
   ========================= */
:root{
  --bg: #ffffff;
  --fg: #0b1220;
  --muted: #5b6473;
  --border: rgba(15, 23, 42, 0.10);

  --teal: #0f766e;
  --lime: #84cc16;
  --amber: #f59e0b;
  --sky: #38bdf8;

  --tint-teal: rgba(15,118,110,.08);
  --tint-lime: rgba(132,204,22,.10);
  --tint-amber: rgba(245,158,11,.10);
  --tint-sky: rgba(56,189,248,.10);

  --shadow: 0 18px 45px rgba(2, 6, 23, 0.10);
  --shadow-soft: 0 10px 28px rgba(2, 6, 23, 0.08);

  --radius: 18px;
  --radius-sm: 14px;

  /* Smooth anchor scroll offset for sticky header */
  --header-offset: 88px;
}

*{box-sizing:border-box}
html,body{height:100%}

/* Smooth anchor scroll + header-safe offsets */
html{
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-offset);
}

/* Any element with an id won’t land under the sticky header */
[id]{ scroll-margin-top: var(--header-offset); }

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Inter, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--fg);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Premium selection color */
::selection{
  background: rgba(132,204,22,.22);
}

/* Subtle, premium scrollbar (supported browsers only) */
@supports selector(::-webkit-scrollbar){
  ::-webkit-scrollbar{ width: 10px; height: 10px; }
  ::-webkit-scrollbar-track{ background: transparent; }
  ::-webkit-scrollbar-thumb{
    background: rgba(15, 23, 42, 0.18);
    border-radius: 999px;
    border: 3px solid #fff;
  }
  ::-webkit-scrollbar-thumb:hover{
    background: rgba(15, 23, 42, 0.26);
  }
}

/* Links */
a{color:inherit; text-decoration:none}
a:hover{
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  text-decoration-color: rgba(15,118,110,.28);
}
img{max-width:100%; height:auto; display:block}

.container{
  width:min(1120px, calc(100% - 40px));
  margin-inline:auto;
}

/* Accessibility */
.skip-link{
  position:absolute;
  left:-999px; top:auto;
  width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  left:16px; top:16px;
  width:auto; height:auto;
  padding:10px 12px;
  background:#fff;
  border:1px solid var(--border);
  border-radius:12px;
  box-shadow: var(--shadow-soft);
  z-index:9999;
}

/* Optional premium reveal (use: data-reveal on sections/cards) */
[data-reveal]{
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .6s ease, transform .6s ease;
  will-change: opacity, transform;
}
[data-reveal].is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  [data-reveal]{
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* Header */
header.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background: rgba(255,255,255,.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 0;
  gap:16px;
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-weight:800;
  letter-spacing:-0.02em;
}
.brand-mark{
  width:34px; height:34px; border-radius:12px;
  background: radial-gradient(120% 120% at 10% 10%, var(--lime), var(--teal) 55%, var(--sky));
  box-shadow: 0 10px 22px rgba(15,118,110,.22);
}
.nav{
  display:flex; align-items:center; gap:10px;
  color: rgba(11,18,32,.82);
  font-weight:700;
  font-size:14px;
}
.nav a{
  padding:10px 12px;
  border-radius:12px;
}
.nav a:hover{
  background: rgba(15,118,110,.07);
  text-decoration:none;
}
/* Active page highlight */
.nav a[aria-current="page"]{
  background: rgba(15,118,110,.09);
  box-shadow: inset 0 0 0 1px rgba(15,118,110,.16);
  text-decoration: none;
}

.header-right{
  display:flex; align-items:center; gap:10px;
}

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:10px;
  padding:11px 14px;
  border-radius: 14px;
  font-weight:800;
  border:1px solid var(--border);
  background:#fff;
  box-shadow: 0 10px 22px rgba(2,6,23,.06);
  text-decoration:none !important;
  transition: transform .15s ease, filter .15s ease, background-color .15s ease, border-color .15s ease;
  will-change: transform;
}
.btn:hover{transform: translateY(-1px)}
.btn:active{transform: translateY(0px)}
.btn:focus-visible{
  outline: 3px solid rgba(56,189,248,.35);
  outline-offset: 2px;
}

.btn-primary{
  border: 1px solid rgba(15,118,110,.22);
  background: linear-gradient(135deg, rgba(132,204,22,.22), rgba(15,118,110,.18) 55%, rgba(56,189,248,.12));
}
.btn-primary strong{color: var(--teal)}

.btn-dark{
  background: #0b1220;
  color:#fff;
  border-color: rgba(255,255,255,.10);
  box-shadow: 0 18px 45px rgba(2, 6, 23, 0.18);
}
.btn-dark:hover{filter: brightness(1.03)}

/* Mobile nav */
.mobile-toggle{
  display:none;
  border:1px solid var(--border);
  background:#fff;
  border-radius:14px;
  padding:10px 12px;
  font-weight:900;
}
.mobile-toggle:focus-visible{
  outline: 3px solid rgba(56,189,248,.35);
  outline-offset:2px
}
@media (max-width: 900px){
  .nav{display:none}
  .mobile-toggle{display:inline-flex}
  .nav[data-open="true"]{
    display:flex;
    position:absolute;
    left:0; right:0;
    top:64px;
    background: rgba(255,255,255,.96);
    border-bottom:1px solid var(--border);
    padding:12px 20px;
    flex-direction:column;
    align-items:flex-start;
    gap:6px;
  }
  .nav a{width:100%}
}

/* Typography */
.section{padding:72px 0}
.section-tight{padding:56px 0}
.kicker{
  font-size:13px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color: rgba(15,118,110,.85);
  font-weight:900;
}
h1{
  font-size: clamp(34px, 4.6vw, 56px);
  line-height: 1.02;
  margin:10px 0 14px;
  letter-spacing:-0.04em;
}
h2{
  font-size: clamp(24px, 3.2vw, 34px);
  line-height: 1.12;
  margin:8px 0 10px;
  letter-spacing:-0.03em;
}
p.lead{
  font-size: clamp(16px, 1.6vw, 18px);
  color: rgba(11,18,32,.72);
  margin:0;
  max-width: 64ch;
}
.muted{color: rgba(11,18,32,.65)}
.small{font-size:13px}

/* Hero */
.hero{
  position:relative;
  padding:82px 0 56px;
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(900px 380px at 10% 10%, rgba(132,204,22,.20), transparent 55%),
    radial-gradient(900px 420px at 95% 20%, rgba(56,189,248,.18), transparent 55%),
    radial-gradient(1000px 520px at 30% 95%, rgba(245,158,11,.14), transparent 60%);
  pointer-events:none;
}
.hero-card{
  position:relative;
  border:1px solid var(--border);
  border-radius: calc(var(--radius) + 8px);
  overflow:hidden;
  box-shadow: var(--shadow);
  background:#fff;
}
.hero-media{
  position:absolute;
  inset:0;
  /* If hero-field.jpg exists it will show; if not, you still get a gradient */
  background:
    linear-gradient(90deg, rgba(255,255,255,.92) 0%, rgba(255,255,255,.82) 44%, rgba(255,255,255,.20) 70%, rgba(255,255,255,0) 100%),
    radial-gradient(900px 420px at 85% 25%, rgba(56,189,248,.22), transparent 55%),
    radial-gradient(900px 520px at 55% 70%, rgba(132,204,22,.18), transparent 60%),
    url("../images/hero-field.jpg") center/cover no-repeat;
}
.hero-content{
  position:relative;
  padding:46px;
  display:grid;
  grid-template-columns: 1.25fr .75fr;
  gap:26px;
}
.hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:18px}
.hero-aside{
  border-left: 1px solid var(--border);
  padding-left: 22px;
  align-self: stretch;
}
.hero-metrics{
  margin-top:10px;
  display:grid;
  gap:10px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 10px;
  border-radius: 999px;
  border:1px solid rgba(15,118,110,.18);
  background: rgba(15,118,110,.08);
  font-weight:900;
  font-size:12px;
  color: rgba(15,118,110,.92);
}
.metric{
  border:1px solid var(--border);
  border-radius: 16px;
  padding:12px 12px;
  background:
    linear-gradient(135deg, rgba(15,118,110,.08), rgba(132,204,22,.08));
}
.metric b{display:block}
.metric span{color: rgba(11,18,32,.62); font-size:14px}

@media (max-width: 900px){
  .hero-content{grid-template-columns:1fr}
  .hero-aside{
    border-left:none;
    border-top:1px solid var(--border);
    padding-left:0;
    padding-top:16px
  }
  .hero-media{
    background:
      linear-gradient(180deg, rgba(255,255,255,.90) 0%, rgba(255,255,255,.80) 50%, rgba(255,255,255,.08) 100%),
      radial-gradient(900px 420px at 85% 25%, rgba(56,189,248,.20), transparent 55%),
      radial-gradient(900px 520px at 55% 70%, rgba(132,204,22,.16), transparent 60%),
      url("../images/hero-field.png") center/cover no-repeat;
  }
}

/* Layout helpers */
.section-header{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:22px;
  margin-bottom:22px;
}
.divider{height:1px; background: var(--border); margin: 20px 0}
.grid{
  display:grid;
  gap:16px;
}
.grid.cols-2{grid-template-columns: repeat(2, minmax(0, 1fr))}
.grid.cols-3{grid-template-columns: repeat(3, minmax(0, 1fr))}
@media (max-width: 900px){
  .grid.cols-2, .grid.cols-3{grid-template-columns:1fr}
}

/* Cards */
.card{
  border:1px solid var(--border);
  border-radius: var(--radius);
  background:#fff;
  padding:18px;
  box-shadow: var(--shadow-soft);
}
.card h3{
  margin:6px 0 8px;
  font-size:18px;
  letter-spacing:-0.02em;
}
.card p{margin:0; color: rgba(11,18,32,.66)}
.icon{
  width:38px; height:38px;
  border-radius: 14px;
  display:grid; place-items:center;
  background: linear-gradient(135deg, rgba(56,189,248,.18), rgba(15,118,110,.14));
  border:1px solid rgba(15,118,110,.18);
}

/* Flow */
.flow{
  border-radius: var(--radius);
  border:1px solid var(--border);
  padding:18px;
  background:
    linear-gradient(135deg, var(--tint-teal), rgba(255,255,255,0) 55%),
    linear-gradient(225deg, var(--tint-amber), rgba(255,255,255,0) 55%);
}
.flow-steps{
  display:grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap:12px;
}
.flow-step{
  padding:12px 12px;
  border-radius: 16px;
  border:1px solid var(--border);
  background:#fff;
}
.flow-step b{display:block; font-size:14px}
.flow-step span{display:block; font-size:13px; color: rgba(11,18,32,.62)}
@media (max-width: 900px){
  .flow-steps{grid-template-columns:1fr}
}

/* Spotlight feedstocks */
.spotlight-card{overflow:hidden; padding:0}
.spotlight-top{
  display:grid;
  grid-template-columns: 1fr 1.1fr;
  gap:0;
}
.spotlight-img{
  min-height: 260px;
  background-size: cover;
  background-position:center;
  /* Fallback if image missing */
  background-color: #f3f6f7;
}
.spotlight-body{padding:18px}
.bullets{
  margin:10px 0 0;
  padding-left: 18px;
  color: rgba(11,18,32,.70);
}
.bullets li{margin:6px 0}

@media (max-width: 900px){
  .spotlight-top{grid-template-columns:1fr}
  .spotlight-img{min-height:220px}
}

/* Locations */
.map-cards .card{
  position:relative;
  padding:0;
  overflow:hidden;
}
.loc-media{
  height: 190px;
  background-size: cover;
  background-position: center;
  background-color:#f3f6f7;
}
.loc-overlay{
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(11,18,32,.10) 40%, rgba(11,18,32,.72) 100%);
}
.loc-body{
  position:absolute;
  left:0; right:0; bottom:0;
  padding:16px;
  color:#fff;
}
.loc-body b{font-size:16px}
.loc-body span{display:block; opacity:.86; font-size:13px}

/* Resource preview cards */
.resource-card{
  display:block;
}

/* Tags */
.tags{display:flex; gap:8px; flex-wrap:wrap; margin-top:12px}
.tag{
  font-size:12px;
  font-weight:900;
  padding:6px 10px;
  border-radius: 999px;
  border:1px solid rgba(15,118,110,.18);
  background: rgba(15,118,110,.07);
  color: rgba(15,118,110,.92);
}

/* CTA band */
.cta-band{
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  background:
    radial-gradient(800px 320px at 20% 30%, rgba(132,204,22,.14), transparent 60%),
    radial-gradient(800px 340px at 90% 60%, rgba(56,189,248,.12), transparent 60%),
    linear-gradient(135deg, rgba(15,118,110,.06), rgba(245,158,11,.06));
}
.cta-inner{
  padding:44px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}
@media (max-width: 900px){
  .cta-inner{flex-direction:column; align-items:flex-start}
}

/* Footer */
footer{
  padding:36px 0;
  color: rgba(11,18,32,.70);
}
.footer-grid{
  display:grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap:16px;
}
@media (max-width: 900px){
  .footer-grid{grid-template-columns:1fr}
}
.footer-links a{
  display:block;
  padding:6px 0;
  color: rgba(11,18,32,.72);
}
.footer-links a:hover{
  color: rgba(11,18,32,.92);
  text-decoration-color: rgba(15,118,110,.25);
}