/* OpenReef site — design tokens shared with the analyzer dashboard */
:root{
  --paper:#f6f4ee;--card:#fffdf8;--ink:#15201f;--ink-2:#4a5553;--ink-3:#8a9391;--line:#e3dfd4;
  --teal:#0f8b8d;--teal-soft:#dff1f0;--coral:#e4572e;--coral-soft:#fbe6df;--amber:#c98a1a;
  --dark:#15201f;--dark-2:#1f2b2a;--dark-line:#2d3b39;
  --serif:"Fraunces","Iowan Old Style","Source Serif 4",Georgia,serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --wrap:1160px;--radius:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 var(--sans);-webkit-font-smoothing:antialiased}
a{color:var(--teal);text-decoration:none}a:hover{text-decoration:underline}
img,svg{max-width:100%}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.muted{color:var(--ink-3)}
h1,h2,h3{font-family:var(--serif);font-weight:600;letter-spacing:-.01em;line-height:1.12;margin:0 0 .5em}
h1{font-size:clamp(34px,5vw,56px)}h2{font-size:clamp(26px,3.2vw,38px)}h3{font-size:20px}
h1 em{font-style:italic;color:var(--teal)}
.eyebrow{font:500 12px var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin:0 0 14px}
.lead{font-size:19px;color:var(--ink-2);max-width:60ch}
code,pre{font-family:var(--mono)}
code{font-size:.9em;background:#eeebe2;padding:.1em .4em;border-radius:5px}
pre{background:var(--dark);color:#d7e0de;padding:18px 20px;border-radius:12px;overflow:auto;font-size:13px;line-height:1.55}
pre code{background:none;padding:0;color:inherit;font-size:inherit}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--ink);color:#fff;border:1px solid var(--ink);border-radius:10px;padding:12px 18px;font:500 15px var(--sans);text-decoration:none}
.btn:hover{background:#000;text-decoration:none}
.btn-ghost{background:transparent;color:var(--ink)}.btn-ghost:hover{background:#eeebe2}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-small{padding:8px 14px;font-size:13px;border-radius:8px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0}
.cta-row.center{justify-content:center}

/* header */
.site-header{position:sticky;top:0;z-index:20;background:rgba(246,244,238,.85);backdrop-filter:saturate(1.2) blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:28px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font:600 19px var(--serif);text-decoration:none}
.brand svg{width:26px;height:26px}
.site-nav{margin-left:auto;display:flex;align-items:center;gap:6px}
.site-nav a{color:var(--ink-2);padding:8px 12px;border-radius:8px;font-size:14px;font-weight:500}
.site-nav a:hover,.site-nav a.is-active{background:var(--teal-soft);color:var(--teal);text-decoration:none}
.site-nav .btn{margin-left:10px;color:#fff}
.ext{font-size:11px;opacity:.6}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:8px;width:40px;height:36px;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;align-items:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink)}
@media(max-width:860px){
  .nav-toggle{display:flex}
  .site-nav{display:none;position:absolute;left:0;right:0;top:64px;background:var(--card);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:12px 24px 18px}
  .site-nav.is-open{display:flex}
  .site-nav .btn{margin:8px 0 0;justify-content:center}
}

/* hero */
.hero{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center;padding:72px 24px 56px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:30px 0 0;padding:22px 0 0;border-top:1px solid var(--line)}
.hero-stats div{margin:0}.hero-stats dt{font-size:12px;color:var(--ink-3);letter-spacing:.04em}.hero-stats dd{margin:2px 0 0;font:600 24px var(--serif)}
.hero-visual{position:relative}
.analyzer-art{width:100%;height:auto;filter:drop-shadow(0 20px 40px rgba(21,32,31,.12))}
.reading-card{position:absolute;right:-8px;bottom:-18px;width:260px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px;box-shadow:0 18px 40px rgba(21,32,31,.14)}
.rc-row{display:flex;justify-content:space-between;font-size:12px;color:var(--ink-3)}
.rc-label{letter-spacing:.08em;text-transform:uppercase}
.rc-value{font:600 36px/1.1 var(--serif);margin:6px 0 4px}.rc-value small{font:500 13px var(--sans);color:var(--ink-3);margin-left:6px}
.rc-band{position:relative;height:6px;border-radius:3px;background:var(--line);margin:10px 0 12px}
.rc-band span{position:absolute;top:0;bottom:0;background:var(--teal-soft);border-radius:3px}
.rc-band i{position:absolute;top:-4px;width:3px;height:14px;background:var(--ink);border-radius:2px}
.rc-sub{color:var(--ink-2)}.rc-sub b{color:var(--ink)}.rc-sub .ok{color:#1f9d55}
@media(max-width:900px){.hero{grid-template-columns:1fr;padding-top:40px}.hero-stats{grid-template-columns:repeat(2,1fr)}.reading-card{position:static;width:100%;margin-top:16px}}

/* bands & sections */
section.wrap{padding-top:72px;padding-bottom:72px}
.band{padding:72px 0;background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.band-dark{background:var(--dark);color:#e6ebe9;border-color:var(--dark-line)}
.band-dark h2{color:#fff}.band-dark .eyebrow{color:#9fb1ae}.band-dark p{color:#c6d0ce}
.cols-3{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:36px}
.feature .icon{width:48px;height:48px;stroke:var(--ink);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;margin-bottom:14px}
.feature p{color:var(--ink-2);margin:0 0 10px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.checks{list-style:none;padding:0;margin:18px 0}
.checks li{padding-left:28px;position:relative;margin:8px 0;color:var(--ink-2)}
.checks li::before{content:"";position:absolute;left:0;top:9px;width:14px;height:8px;border-left:2px solid var(--teal);border-bottom:2px solid var(--teal);transform:rotate(-45deg)}
.checks.light li{color:#c6d0ce}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px}
.gallery figure{margin:0;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.gallery img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;background:#f6f4ee}
.gallery figcaption{padding:12px 14px;font-size:13px;color:var(--ink-2)}
@media(max-width:900px){.gallery{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.gallery{grid-template-columns:1fr}}
.spec-table table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:14px}
.spec-table th{text-align:left;font-weight:500;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);padding:12px 14px;border-bottom:1px solid var(--line);background:#f1eee6}
.spec-table td{padding:12px 14px;border-bottom:1px solid var(--line)}
.spec-table tr:last-child td{border-bottom:0}
.code-card pre{margin:0;border:1px solid var(--dark-line);background:var(--dark-2)}
.steps{list-style:none;padding:0;margin:36px 0 10px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:s}
.steps li{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.steps span{font:600 13px var(--mono);color:var(--teal)}
.steps h3{margin:10px 0 6px;font-size:18px}.steps p{margin:0;color:var(--ink-2);font-size:14px}
@media(max-width:900px){.cols-3,.split,.steps{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.steps{grid-template-columns:1fr}}

/* docs layout */
.docs{display:grid;grid-template-columns:240px minmax(0,1fr) 200px;gap:48px;padding-top:36px;padding-bottom:80px}
.docs-side{position:sticky;top:84px;align-self:start;max-height:calc(100vh - 100px);overflow:auto}
.side-toggle{display:none}
.nav-group{margin-bottom:22px}
.nav-group-title{font:500 11px var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-bottom:8px}
.docs-nav a{display:block;padding:6px 10px;margin-left:-10px;border-radius:7px;color:var(--ink-2);font-size:14px}
.docs-nav a:hover{background:#eeebe2;text-decoration:none}
.docs-nav a.is-active{background:var(--teal-soft);color:var(--teal);font-weight:500}
.docs-toc{position:sticky;top:84px;align-self:start;font-size:13px}
.toc-title{font:500 11px var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-bottom:10px}
.toc a{display:block;color:var(--ink-3);padding:4px 0 4px 12px;border-left:2px solid var(--line)}
.toc a.lvl3{padding-left:24px}
.toc a.is-active{color:var(--teal);border-color:var(--teal)}
.crumbs{font:500 12px var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--teal);margin-bottom:10px}
.doc-footer{display:flex;justify-content:space-between;margin-top:48px;padding-top:18px;border-top:1px solid var(--line);font-size:13px}
@media(max-width:1100px){.docs{grid-template-columns:220px minmax(0,1fr)}.docs-toc{display:none}}
@media(max-width:800px){
  .docs{grid-template-columns:1fr;gap:20px}
  .docs-side{position:static;max-height:none}
  .side-toggle{display:block;width:100%;text-align:left;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:10px 14px;font:500 14px var(--sans);cursor:pointer}
  .docs-nav{display:none;padding:12px 0}
  .docs-side.is-open .docs-nav{display:block}
}

/* prose */
.page{padding-top:48px;padding-bottom:80px}
.prose{max-width:76ch}
.prose h1{font-size:clamp(30px,4vw,42px)}
.prose h2{font-size:26px;margin-top:2em;padding-top:.4em;border-top:1px solid var(--line)}
.prose h3{font-size:19px;margin-top:1.6em}
.prose p,.prose li{color:#2b3534}
.prose table{width:100%;border-collapse:collapse;font-size:14px;margin:18px 0;display:block;overflow-x:auto}
.prose th{text-align:left;font-weight:500;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);padding:10px 10px;border-bottom:1px solid var(--line)}
.prose td{padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.prose blockquote{margin:18px 0;padding:14px 18px;border-left:3px solid var(--teal);background:var(--teal-soft);border-radius:0 10px 10px 0;color:var(--ink-2)}
.prose blockquote.warn{border-color:var(--coral);background:var(--coral-soft)}
.prose img,.prose svg{border:1px solid var(--line);border-radius:10px;background:#fff}
.prose pre{margin:18px 0}
.prose .math{font-family:var(--mono);background:#eeebe2;padding:12px 16px;border-radius:10px;overflow:auto;font-size:14px}
.callout{padding:14px 18px;border-radius:10px;border:1px solid var(--line);background:var(--card);margin:18px 0}
.callout.warn{border-color:var(--coral);background:var(--coral-soft)}
.callout.tip{border-color:var(--teal);background:var(--teal-soft)}

/* footer */
.site-footer{border-top:1px solid var(--line);background:var(--card);padding:48px 0 28px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-grid h4{font:500 12px var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin:0 0 10px}
.footer-grid a{display:block;color:var(--ink-2);font-size:14px;margin:6px 0}
.footer-grid .brand{margin-bottom:8px}
.footer-meta{font-size:12px;margin-top:28px;padding-top:18px;border-top:1px solid var(--line)}
@media(max-width:800px){.footer-grid{grid-template-columns:1fr 1fr}}