/* Diving Knowledge Base — Africa Wildlife Safari house style.
   Matches the live site: Crimson Pro (serif headings) + Nunito Sans (body),
   neutral light palette, with the logo's green/gold/rust as accents. */
@import url('https://fonts.googleapis.com/css2?family=Crimson+Pro:wght@400;500;600&family=Nunito+Sans:wght@400;600;700&display=swap');

:root{
 --paper:#ffffff;        /* page background (site is white) */
 --paper-2:#f6f3ec;      /* warm alt section */
 --card:#ffffff;
 --ink:#202020;          /* headings, near-black */
 --ink-body:#4c4842;     /* body copy */
 --ink-soft:#847f76;     /* muted, matches site */
 --line:#e8e3d9;         /* hairline */
 --near-black:#171717;   /* buttons/links, matches site */
 --green:#3d8b34;        /* Africa green */
 --green-d:#2c6a26;
 --gold:#cf8f2a;         /* gorilla gold */
 --gold-d:#a86f14;
 --rust:#9c3d1c;         /* jeep rust */
 --rust-d:#7c2f13;
 --shadow:0 6px 26px rgba(30,26,18,.09);
 --wrap:1200px;--read:760px;
 --font-serif:'Crimson Pro',Georgia,serif;
 --font-sans:'Nunito Sans',Tahoma,Geneva,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--paper);color:var(--ink-body);line-height:1.7;
 -webkit-font-smoothing:antialiased}
a{color:var(--rust);text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
img{max-width:100%;display:block}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(23,23,23,.94);backdrop-filter:blur(12px);
 border-bottom:1px solid #2a2a2a}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;padding:7px 0}
.logo{display:flex;align-items:center;gap:14px;color:#fff}
.logo-img{height:78px;width:auto;display:block}
.logo-sub{font-family:var(--font-serif);font-size:15px;color:#c9c4ba;border-left:1px solid #3a3a3a;
 padding-left:12px}
.topnav{display:flex;gap:4px}
.topnav a{color:#c9c4ba;font-size:14px;padding:8px 14px;border-radius:20px;font-weight:600}
.topnav a:hover{color:#fff;background:#ffffff14}

/* hero */
.hero{position:relative;padding:100px 0 66px;text-align:center;overflow:hidden;background:var(--paper-2)}
.hero::before{content:"";position:absolute;inset:0;z-index:-2;background:var(--paper-2)}
.hero.hasimg{background:#1c1c1c}
.hero.hasimg::before{background:linear-gradient(180deg,rgba(20,20,20,.58),rgba(20,20,20,.82)),var(--herobg) center/cover;background-color:#1c1c1c}
.hero.hasimg .eyebrow{color:#e7b667}
.hero.hasimg h1{color:#fff}
.hero.hasimg .lead{color:#efe9df}
.hero.hasimg .stat b{color:#fff}
.hero.hasimg .stat span{color:#e2d8c6}
.hero .wrap{position:relative;z-index:2}
.hero .waves{position:absolute;bottom:-1px;left:0;width:100%;z-index:1;pointer-events:none}
.eyebrow{color:var(--rust);letter-spacing:2.5px;text-transform:uppercase;font-size:12px;font-weight:700;margin-bottom:16px}
.hero h1{font-family:var(--font-serif);font-size:clamp(38px,6vw,64px);line-height:1.04;font-weight:600;
 letter-spacing:-.5px;margin-bottom:18px;color:var(--ink)}
.hero .lead{max-width:660px;margin:0 auto 30px;color:var(--ink-soft);font-size:18px}
.stats{display:flex;gap:36px;justify-content:center;flex-wrap:wrap}
.stat b{display:block;font-family:var(--font-serif);font-size:32px;font-weight:600;color:var(--green-d)}
.stat span{color:var(--ink-soft);font-size:12px;letter-spacing:1px;text-transform:uppercase}
.searchbar{max-width:620px;margin:34px auto 0;position:relative}
.searchbar input{width:100%;padding:16px 20px 16px 52px;border-radius:30px;border:1px solid var(--line);
 background:var(--card);color:var(--ink);font-size:16px;font-family:inherit;box-shadow:var(--shadow)}
.searchbar input:focus{outline:2px solid var(--gold)}
.searchbar .ico{position:absolute;left:19px;top:50%;transform:translateY(-50%);opacity:.5;pointer-events:none}

/* home grid */
.home-main{padding:46px 24px 74px}
.cat-h{font-family:var(--font-serif);font-size:27px;font-weight:600;margin:38px 0 18px;color:var(--ink);
 display:flex;align-items:center;gap:11px}
.cat-h::before{content:"";width:12px;height:12px;border-radius:50%;background:var(--green)}
#theenvironment .cat-h::before,#orientationteam .cat-h::before{background:var(--gold)}
#skillsplanning .cat-h::before,#equipment .cat-h::before{background:var(--rust)}
#marinebiology .cat-h::before{background:var(--green)}
#inpractice .cat-h::before{background:var(--gold)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(272px,1fr));gap:20px}
.tcard{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;
 transition:transform .18s, box-shadow .18s, border-color .18s;display:flex;flex-direction:column}
.tcard:hover{transform:translateY(-4px);border-color:var(--gold);box-shadow:var(--shadow)}
.tcard .thumb{height:152px;background-size:cover;background-position:center;position:relative}
.tcard .thumb.noimg{background:var(--paper-2)}
.tcard .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(20,20,20,.34))}
.tcard .ico2{position:absolute;left:14px;bottom:11px;font-size:26px;z-index:2;filter:drop-shadow(0 2px 4px rgba(0,0,0,.5))}
.tcard .pad{padding:16px 18px 20px}
.tcard .cat{font-size:11px;letter-spacing:1.2px;text-transform:uppercase;color:var(--gold-d);font-weight:700}
.tcard h3{font-family:var(--font-serif);font-size:21px;font-weight:600;margin:5px 0 8px;line-height:1.22;color:var(--ink)}
.tcard p{color:var(--ink-soft);font-size:14px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.nores{text-align:center;color:var(--ink-soft);padding:40px;font-size:17px}

/* chapter page */
main{padding-bottom:40px}
.chapter{max-width:var(--read);margin:0 auto;padding:26px 24px 0}
.crumbs{font-size:13px;color:var(--ink-soft);margin:14px 0 22px}
.crumbs a{color:var(--ink-soft)}.crumbs a:hover{color:var(--rust)}.crumbs span{opacity:.5;margin:0 4px}
.ch-head .eyebrow{margin-bottom:10px}
.ch-head h1{font-family:var(--font-serif);font-size:clamp(32px,5vw,48px);line-height:1.1;font-weight:600;
 letter-spacing:-.5px;margin-bottom:14px;color:var(--ink)}
.ch-lead{font-size:20px;color:var(--ink-soft);line-height:1.55;margin-bottom:24px}
.ch-hero-img{border-radius:14px;overflow:hidden;margin:0 0 26px;box-shadow:var(--shadow)}
.ch-hero-img img{width:100%;height:auto}
.mnem{background:var(--paper-2);border:1px solid var(--line);border-left:3px solid var(--gold);
 border-radius:0 8px 8px 0;padding:11px 15px;font-size:14px;color:var(--ink-soft);margin:0 0 26px}
.mnem-l{color:var(--gold-d);font-weight:700;text-transform:uppercase;letter-spacing:1px;font-size:11px;margin-right:8px}

/* prose */
.prose{font-size:17.5px;color:var(--ink-body)}
.prose h2{font-family:var(--font-serif);font-size:28px;font-weight:600;margin:40px 0 14px;color:var(--ink);
 line-height:1.18;padding-bottom:7px;border-bottom:2px solid var(--line)}
.prose h3{font-family:var(--font-serif);font-size:22px;font-weight:600;margin:28px 0 8px;color:var(--rust-d)}
.prose p{margin:0 0 16px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:24px}
.prose li{margin:6px 0}
.prose li::marker{color:var(--gold-d)}
.prose strong{color:var(--ink);font-weight:700}
.prose a{border-bottom:1px solid var(--rust)}
.prose hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.prose table{width:100%;border-collapse:collapse;margin:16px 0 24px;font-size:15px;background:var(--card);
 border-radius:10px;overflow:hidden;box-shadow:0 1px 6px rgba(30,26,18,.05);display:block;overflow-x:auto}
.prose th{background:var(--ink);color:#fff;text-align:left;padding:11px 14px;font-weight:600}
.prose td{padding:10px 14px;border-top:1px solid var(--line);color:var(--ink-body);vertical-align:top}
.prose tr:nth-child(even) td{background:#0000000a}
.prose blockquote{margin:22px 0;padding:16px 20px;background:var(--paper-2);border-left:4px solid var(--green);
 border-radius:0 10px 10px 0;color:#43403a}
.prose blockquote strong:first-child{color:var(--green-d)}
.prose code{font-family:ui-monospace,'Courier New',monospace}
.prose p code{background:var(--paper-2);padding:1px 6px;border-radius:4px;font-size:.9em}

/* modern diagrams — deliberate dark figures for contrast */
.dgm{margin:24px 0;background:#20242c;border:1px solid #2c313b;border-radius:14px;padding:18px 18px 12px;box-shadow:var(--shadow)}
.dgm svg{width:100%;height:auto;display:block;border-radius:8px}
.dgm figcaption{margin-top:10px;font-size:13px;color:#9aa0ab;text-align:center}

/* gallery */
.gallery{max-width:var(--read);margin:44px auto 0}
.gallery h2{font-family:var(--font-serif);font-size:23px;font-weight:600;margin-bottom:14px;color:var(--ink)}
.g-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.g-item{border-radius:10px;overflow:hidden;aspect-ratio:4/3}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform .25s}
.g-item:hover img{transform:scale(1.06)}

/* prev/next + related */
.prevnext{max-width:var(--read);margin:44px auto 0;display:flex;gap:14px;justify-content:space-between}
.pn{flex:1;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 18px;max-width:48%}
.pn:hover{border-color:var(--gold)}
.pn span{font-size:12px;color:var(--ink-soft)}.pn b{display:block;color:var(--ink);font-size:15px;margin-top:3px;font-weight:600}
.pn.next{text-align:right}
.related{max-width:var(--read);margin:40px auto 20px}
.related h2{font-family:var(--font-serif);font-size:23px;font-weight:600;margin-bottom:14px;color:var(--ink)}
.rel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px}
.rel{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;display:flex;align-items:center;gap:11px}
.rel:hover{border-color:var(--gold)}
.rel span{font-size:24px}.rel b{font-size:14px;color:var(--ink);line-height:1.3;font-weight:600}

/* footer */
.site-foot{border-top:3px solid var(--gold);background:var(--paper-2);padding:34px 0;color:var(--ink-soft);font-size:13.5px;margin-top:44px}
.site-foot strong{color:var(--ink)}
.site-foot .wrap{max-width:var(--read)}

@media(max-width:640px){
 .topnav{display:none}.stats{gap:20px}.pn{max-width:100%}.prevnext{flex-direction:column}
 .logo-sub{display:none}
}