/* The Coral Triangle - coraltriangle.org
   Single stylesheet, no frameworks, no build step. */

:root {
  --deep:    #062a3d;
  --ocean:   #0b4f6c;
  --lagoon:  #01808c;
  --shallow: #21a0a0;
  --sand:    #f4f1e8;
  --paper:   #ffffff;
  --ink:     #1c2b33;
  --ink-soft:#4a5c66;
  --line:    #dfe4e6;
  --coral:   #d9642c;
  --maxw:    1140px;
  --readw:   72ch;
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  font-size: 18px;
  line-height: 1.7;
}

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

a { color: var(--ocean); text-decoration: underline; text-underline-offset: 2px; }
a:hover, a:focus { color: var(--coral); }

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

/* ---------- Skip link ---------- */
.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--coral); color: #fff; padding: 10px 16px;
}
.skip:focus { left: 0; }

/* ---------- Header ---------- */
.site-head {
  background: linear-gradient(160deg, var(--deep) 0%, var(--ocean) 55%, var(--lagoon) 100%);
  color: #eaf6f8;
}
.brand {
  display: block;
  padding: 26px 0 18px;
  text-decoration: none;
  color: #fff;
}
.brand strong {
  display: block;
  font-size: 1.6rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  font-weight: 700;
  line-height: 1.2;
}
.brand span {
  display: block;
  font-size: .92rem;
  color: #a9d8e0;
  letter-spacing: .02em;
  margin-top: 4px;
}
.brand:hover strong { color: #ffd9c4; }

/* ---------- Navigation ---------- */
.site-nav {
  border-top: 1px solid rgba(255,255,255,.16);
  background: rgba(0,0,0,.14);
}
.site-nav ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 0;
}
.site-nav a {
  display: block;
  padding: 12px 16px;
  color: #dcf0f4;
  text-decoration: none;
  font-size: .88rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  font-weight: 600;
}
.site-nav a:hover, .site-nav a:focus { background: rgba(255,255,255,.12); color: #fff; }
.site-nav a[aria-current="page"] { background: var(--shallow); color: #04262e; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(180deg, var(--lagoon) 0%, #0e6a7d 60%, #0a4d61 100%);
  color: #f2fbfc;
  padding: 54px 0 48px;
}
.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(1.9rem, 4.5vw, 2.9rem);
  line-height: 1.18;
  color: #fff;
}
.hero p {
  margin: 0;
  max-width: var(--readw);
  font-size: 1.12rem;
  color: #d7eef2;
}
.hero .kicker {
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .78rem;
  color: #9fd6de;
  margin: 0 0 10px;
}

/* ---------- Page title band (inner pages) ---------- */
.page-head {
  background: var(--sand);
  border-bottom: 1px solid var(--line);
  padding: 38px 0 32px;
}
.page-head h1 {
  margin: 0 0 10px;
  font-size: clamp(1.7rem, 3.6vw, 2.4rem);
  line-height: 1.2;
  color: var(--deep);
}
.page-head p { margin: 0; max-width: var(--readw); color: var(--ink-soft); }

/* ---------- Content ---------- */
main { padding: 40px 0 10px; }

section { margin: 0 0 42px; }

h2 {
  font-size: clamp(1.35rem, 2.6vw, 1.75rem);
  line-height: 1.25;
  color: var(--deep);
  margin: 2.2em 0 .55em;
  padding-bottom: .3em;
  border-bottom: 2px solid var(--shallow);
}
h2:first-child { margin-top: 0; }

h3 {
  font-size: 1.14rem;
  color: var(--ocean);
  margin: 1.9em 0 .4em;
}

p, ul, ol, dl { max-width: var(--readw); }
p { margin: 0 0 1.05em; }

ul, ol { padding-left: 1.25em; }
li { margin-bottom: .45em; }

blockquote {
  margin: 1.6em 0;
  padding: 4px 0 4px 22px;
  border-left: 4px solid var(--coral);
  color: var(--ink-soft);
  font-style: italic;
  max-width: var(--readw);
}
blockquote cite { display: block; font-style: normal; font-size: .9rem; margin-top: .5em; color: var(--ink-soft); }

/* ---------- Cards ---------- */
.cards {
  list-style: none; padding: 0; margin: 26px 0 0;
  max-width: none;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.cards li { margin: 0; }
.card {
  display: block;
  height: 100%;
  padding: 20px 22px;
  background: var(--sand);
  border: 1px solid var(--line);
  border-left: 4px solid var(--shallow);
  border-radius: 3px;
  text-decoration: none;
  color: var(--ink);
}
.card:hover, .card:focus { background: #eef4f2; border-left-color: var(--coral); color: var(--ink); }
.card b { display: block; color: var(--deep); font-size: 1.05rem; margin-bottom: 6px; }
.card span { display: block; font-size: .93rem; color: var(--ink-soft); line-height: 1.55; }

/* ---------- Facts / stats ---------- */
.facts {
  list-style: none; margin: 26px 0; padding: 0;
  max-width: none;
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}
.facts li {
  margin: 0; padding: 18px 20px;
  background: var(--deep); color: #dff1f5;
  border-radius: 3px;
}
.facts b { display: block; font-size: 1.6rem; color: #7fd8de; line-height: 1.1; margin-bottom: 4px; }
.facts span { font-size: .9rem; line-height: 1.5; display: block; }

/* ---------- Callout / link block ---------- */
.callout {
  background: #f0f7f8;
  border: 1px solid #cfe3e6;
  border-radius: 3px;
  padding: 20px 24px;
  margin: 28px 0;
}
.callout p:last-child { margin-bottom: 0; }
.callout h3 { margin-top: 0; }

/* ---------- Definition-style topic list ---------- */
.topic { margin: 0 0 26px; }
.topic h3 { margin-top: 0; }

/* ---------- Breadcrumb ---------- */
.crumbs {
  font-size: .87rem;
  color: var(--ink-soft);
  padding: 18px 0 0;
  max-width: none;
}
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; max-width: none; }
.crumbs li { margin: 0; }
.crumbs li + li::before { content: "›"; margin-right: 6px; color: #9aa9b0; }

/* ---------- Home link strip ---------- */
.home-strip {
  background: var(--sand);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
  margin: 44px 0 0;
}
.home-strip p { margin: 0; max-width: none; font-size: 1rem; }

/* ---------- Footer ---------- */
.site-foot {
  background: var(--deep);
  color: #b9d3db;
  padding: 40px 0 28px;
  margin-top: 0;
  font-size: .94rem;
}
.site-foot a { color: #8fd3dd; }
.site-foot a:hover { color: #ffd9c4; }
.foot-grid {
  display: grid; gap: 26px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-bottom: 26px;
}
.foot-grid h2 {
  font-size: .82rem; text-transform: uppercase; letter-spacing: .12em;
  color: #7fd8de; border: 0; margin: 0 0 10px; padding: 0;
}
.foot-grid ul { list-style: none; margin: 0; padding: 0; }
.foot-grid li { margin-bottom: 6px; }
.foot-grid p { max-width: none; margin: 0 0 .6em; }
.legal {
  border-top: 1px solid rgba(255,255,255,.14);
  padding-top: 18px;
  font-size: .86rem;
  color: #8ba7b1;
}
.legal p { max-width: none; margin: 0 0 .4em; }

/* ---------- Utilities ---------- */
.lede { font-size: 1.1rem; color: var(--ink-soft); }
.small { font-size: .9rem; color: var(--ink-soft); }

@media (max-width: 640px) {
  body { font-size: 17px; }
  .site-nav a { padding: 10px 12px; font-size: .8rem; }
  .brand strong { font-size: 1.25rem; letter-spacing: .1em; }
}