/* Icicle — clear-water freshwater aquarium reference. Deep blue, sharp-cornered, sans-serif. */

:root {
  --bg: #0a1a24;
  --surface: #102833;
  --surface-2: #16333f;
  --border: #1e4250;
  --border-soft: #173442;
  --accent: #14b8a6;
  --accent-bright: #38bdf8;
  --cyan: #7dd3fc;
  --text: #e0f2fe;
  --muted: #86aabd;
  --maxw: 1080px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.65;
  font-size: 16px;
}
a { color: var(--accent-bright); text-decoration: none; }
a:hover { color: var(--cyan); }
h1, h2, h3 { line-height: 1.2; font-weight: 600; color: #fff; margin: 0 0 .6em; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.italic { font-style: italic; }

/* header */
.site-head { border-bottom: 1px solid var(--border); background: var(--surface); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding-top: 16px; padding-bottom: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); }
.brand-mark { width: 30px; height: 30px; color: var(--cyan); flex: none; }
.brand-name { font-size: 1.35rem; font-weight: 700; letter-spacing: .04em; color: #fff; }
.brand-sub { font-size: .76rem; color: var(--muted); letter-spacing: .05em; }
.nav { display: flex; gap: 20px; flex-wrap: wrap; }
.nav a { color: var(--text); font-size: .92rem; letter-spacing: .03em; }
.nav a:hover { color: var(--cyan); }

/* hero */
.hero { padding: 72px 0 56px; background: linear-gradient(180deg, #0e2433 0%, var(--bg) 100%); border-bottom: 1px solid var(--border); }
.hero-kicker { color: var(--cyan); text-transform: uppercase; letter-spacing: .18em; font-size: .8rem; margin-bottom: 14px; }
.hero h1 { font-size: 2.4rem; max-width: 22ch; }
.hero-lede { color: var(--muted); font-size: 1.1rem; max-width: 62ch; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 26px; }
.btn { display: inline-block; padding: 12px 22px; background: var(--accent); color: #04222b; font-weight: 600; letter-spacing: .03em; border: 1px solid var(--accent); }
.btn:hover { background: var(--accent-bright); color: #04222b; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { color: var(--cyan); border-color: var(--cyan); }

/* section headings */
section h2 { font-size: 1.5rem; border-bottom: 1px solid var(--border-soft); padding-bottom: 10px; margin-bottom: 24px; }
.group-index, .latest, .group-block { padding: 48px 0; }
.group-index { background: var(--surface); border-bottom: 1px solid var(--border); }

/* group tiles */
.group-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1px; background: var(--border-soft); border: 1px solid var(--border-soft); }
.group-tile { background: var(--bg); padding: 22px 20px; display: flex; flex-direction: column; gap: 4px; color: var(--text); }
.group-tile:hover { background: var(--surface-2); }
.group-name { font-size: 1.02rem; font-weight: 600; color: #fff; }
.group-count { color: var(--muted); font-size: .85rem; }

/* fish cards */
.fish-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 18px; }
.fish-card { background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--accent); padding: 20px; display: flex; flex-direction: column; }
.card-group { color: var(--cyan); text-transform: uppercase; letter-spacing: .12em; font-size: .72rem; margin: 0 0 8px; }
.card-title { font-size: 1.15rem; margin-bottom: 8px; }
.card-title a { color: #fff; }
.card-title a:hover { color: var(--cyan); }
.card-desc { color: var(--muted); font-size: .9rem; flex: 1; }
.card-facts { margin: 14px 0 0; }
.cf { display: flex; gap: 10px; font-size: .85rem; border-top: 1px solid var(--border-soft); padding: 6px 0; }
.cf dt { color: var(--muted); min-width: 110px; }
.cf dd { margin: 0; color: var(--text); }
.card-link { margin-top: 16px; font-weight: 600; font-size: .9rem; }

/* page head */
.page-head { padding: 48px 0 24px; border-bottom: 1px solid var(--border); background: var(--surface); }
.page-head h1 { font-size: 2rem; }
.lede { color: var(--muted); font-size: 1.05rem; max-width: 62ch; }

/* prose / static pages */
.page-body { padding: 40px 0 64px; }
.prose { max-width: 72ch; }
.prose h2 { font-size: 1.25rem; margin-top: 1.6em; border-bottom: 1px solid var(--border-soft); }
.prose a { text-decoration: underline; }
.prose ul { padding-left: 20px; }
.prose li { margin-bottom: 6px; }

/* breadcrumbs */
.crumbs { background: var(--surface); border-bottom: 1px solid var(--border); padding: 12px 0; font-size: .85rem; }
.crumbs .sep { color: var(--muted); margin: 0 6px; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--cyan); }
.crumbs span { color: var(--text); }

/* article */
.species-head { padding: 44px 0 28px; border-bottom: 1px solid var(--border); background: linear-gradient(180deg, #0e2433 0%, var(--bg) 100%); }
.species-group { color: var(--cyan); text-transform: uppercase; letter-spacing: .16em; font-size: .78rem; margin-bottom: 10px; }
.species-head h1 { font-size: 2.2rem; }
.species-meta { color: var(--muted); font-size: .88rem; }
.species-lede { color: var(--muted); font-size: 1.08rem; max-width: 62ch; }
.species > .wrap { display: grid; grid-template-columns: 320px 1fr; gap: 36px; align-items: start; padding-top: 36px; padding-bottom: 64px; }

/* facts card (specimen log) */
.facts-card { background: var(--surface); border: 1px dashed var(--accent); padding: 20px; position: sticky; top: 20px; }
.facts-title { font-size: .82rem; text-transform: uppercase; letter-spacing: .16em; color: var(--cyan); border-bottom: 1px dashed var(--accent); padding-bottom: 10px; margin-bottom: 14px; }
.facts { margin: 0; }
.fact { border-bottom: 1px solid var(--border-soft); padding: 10px 0; }
.fact:last-child { border-bottom: 0; }
.fact dt { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 4px; }
.fact dd { margin: 0; font-size: .92rem; }
.param { display: inline-block; margin-right: 12px; background: var(--surface-2); border: 1px solid var(--border); padding: 2px 10px; }
.param-label { color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; margin-right: 6px; }
.param-val { color: var(--cyan); font-weight: 600; }

/* article body */
.species-body { max-width: 70ch; }
.species-section { margin-bottom: 34px; }
.species-section h2 { font-size: 1.35rem; color: var(--cyan); border-bottom: 1px solid var(--border-soft); }
.species-section p { color: var(--text); }

/* footer */
.site-foot { border-top: 1px solid var(--border); background: var(--surface); padding: 36px 0; margin-top: 24px; }
.foot-brand { color: var(--muted); font-size: .9rem; }
.foot-nav { display: flex; gap: 18px; flex-wrap: wrap; margin: 12px 0; }
.foot-nav a { color: var(--text); font-size: .88rem; }
.foot-nav a:hover { color: var(--cyan); }
.foot-fine { color: var(--muted); font-size: .78rem; }

@media (max-width: 820px) {
  .species > .wrap { grid-template-columns: 1fr; }
  .facts-card { position: static; }
  .hero h1 { font-size: 1.8rem; }
}