/* EGAnet site — "Blue Ridge" design system */

:root{
  --paper:#F2F4F0;
  --paper-dim:#E7EAE4;
  --paper-panel:#FBFCFA;
  --ink:#1C2230;
  --ink-soft:#4A5164;
  --ink-faint:#767E90;
  --deep:#272A39;
  --blue:#24547E;
  --blue-dim:#EDF2F5;
  --slate:#4C6E98;
  --rose:#7F616E;
  --peach:#FDB184;
  --peach-deep:#B5793E;
  --butter:#FDE8A9;
  --olive:#8A9A6E;
  --line: rgba(28,34,48,0.14);
  --line-soft: rgba(28,34,48,0.08);
  --serif: ui-serif, Georgia, "Iowan Old Style", "Palatino Linotype", "Times New Roman", serif;
  --sans: ui-sans-serif, -apple-system, "Segoe UI", system-ui, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
html,body{margin:0;padding:0;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;}
img{max-width:100%;height:auto;}
.wrap{max-width:1120px;margin:0 auto;padding:0 32px;}
@media (max-width:640px){.wrap{padding:0 20px;}}

::selection{background:var(--butter);color:var(--deep);}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:2px;}

/* ---------------------------------------------------------------- nav */
header.site{
  position:sticky;top:0;z-index:40;
  background:rgba(242,244,240,0.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:16px 0;gap:20px;}
.brand{display:flex;align-items:center;gap:9px;font-family:var(--serif);font-size:21px;letter-spacing:0.01em;font-style:italic;color:var(--deep);text-decoration:none;flex-shrink:0;}
.brand svg{display:block;}
.navlinks{display:flex;align-items:center;gap:22px;font-size:13.5px;letter-spacing:0.02em;}
.navlinks a{text-decoration:none;color:var(--ink-soft);border-bottom:1px solid transparent;padding-bottom:2px;transition:border-color .15s, color .15s;white-space:nowrap;}
.navlinks a:hover{color:var(--blue);border-color:var(--blue);}
.navlinks a.current{color:var(--blue);border-color:var(--blue);}
.navlinks .cta{color:var(--paper);background:var(--blue);padding:8px 16px;border-radius:3px;font-size:13px;text-transform:uppercase;letter-spacing:0.07em;border-bottom:none !important;}
.navlinks .cta:hover{background:var(--deep);}
.navtoggle{display:none;}
@media (max-width:820px){
  .navlinks a:not(.cta):not(.always){display:none;}
}

/* ---------------------------------------------------------------- buttons */
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:4px;
  font-size:13.5px;text-decoration:none;font-weight:600;letter-spacing:0.01em;
  border:1px solid var(--deep);
}
.btn.primary{background:var(--deep);color:var(--paper);}
.btn.primary:hover{background:var(--blue);border-color:var(--blue);}
.btn.ghost{background:transparent;color:var(--deep);}
.btn.ghost:hover{background:var(--paper-dim);}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------------------------------------------------------------- breadcrumb */
.breadcrumb{
  font-family:var(--mono);font-size:12px;color:var(--ink-faint);letter-spacing:0.03em;
  padding:22px 0 0;
}
.breadcrumb a{text-decoration:none;color:var(--ink-faint);}
.breadcrumb a:hover{color:var(--blue);}
.breadcrumb .sep{margin:0 6px;opacity:0.6;}

/* ---------------------------------------------------------------- page head (reference/article title) */
.page-head{padding:18px 0 36px;border-bottom:1px solid var(--line);margin-bottom:40px;}
.page-eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:0.14em;text-transform:uppercase;
  color:var(--blue);margin:0 0 14px;display:flex;align-items:center;gap:10px;
}
.page-eyebrow::before{content:"";width:22px;height:1px;background:var(--blue);display:inline-block;}
.page-title{
  font-family:var(--serif);font-weight:400;font-size:clamp(28px,4vw,42px);
  line-height:1.12;letter-spacing:-0.01em;margin:0 0 14px;color:var(--deep);
}
.page-title code{font-family:var(--mono);font-size:0.75em;background:var(--paper-dim);padding:2px 8px;border-radius:4px;color:var(--blue);}
.page-dek{font-size:17px;line-height:1.6;color:var(--ink-soft);max-width:62ch;margin:0;}

/* ---------------------------------------------------------------- hero (home) */
.hero{padding:88px 0 64px;}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr;}}
h1.headline{
  font-family:var(--serif);font-weight:400;font-size:clamp(34px,5vw,54px);
  line-height:1.08;letter-spacing:-0.01em;margin:0 0 26px;color:var(--deep);
}
h1.headline em{font-style:italic;color:var(--blue);}
p.lede{font-size:18px;line-height:1.6;color:var(--ink-soft);max-width:46ch;margin:0 0 34px;}

/* ---------------------------------------------------------------- generic section rhythm */
.section{padding:56px 0;}
.section-head{max-width:60ch;margin-bottom:36px;}
.section-head .page-eyebrow{margin-bottom:14px;}
.section-head h2{font-family:var(--serif);font-size:clamp(24px,3.2vw,32px);font-weight:400;margin:0 0 12px;color:var(--deep);}
.section-head h2 em{font-style:italic;color:var(--rose);}
.section-head p{color:var(--ink-soft);font-size:16px;line-height:1.6;margin:0;}

/* ---------------------------------------------------------------- sidebar layout (reference / articles) */
.layout{display:grid;grid-template-columns:240px 1fr;gap:56px;align-items:start;padding:36px 0 72px;}
@media (max-width:900px){.layout{grid-template-columns:1fr;gap:28px;}}
.sidebar{position:sticky;top:76px;max-height:calc(100vh - 96px);overflow-y:auto;padding-bottom:20px;}
@media (max-width:900px){.sidebar{position:static;max-height:none;border:1px solid var(--line);border-radius:8px;padding:16px 18px;background:var(--paper-panel);}}
.sidebar h5{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:0.08em;color:var(--ink-faint);margin:22px 0 8px;}
.sidebar h5:first-child{margin-top:0;}
.sidebar ul{list-style:none;margin:0;padding:0;}
.sidebar li a{
  display:block;font-size:13.5px;color:var(--ink-soft);text-decoration:none;padding:4px 0 4px 12px;
  border-left:2px solid transparent;line-height:1.5;
}
.sidebar li a:hover{color:var(--blue);border-left-color:var(--line);}
.sidebar li a.current{color:var(--blue);border-left-color:var(--blue);font-weight:600;}
.sidebar li a code{font-family:var(--mono);font-size:12.5px;}

.content{min-width:0;}

/* ---------------------------------------------------------------- prose (reference + articles) */
.prose h2{font-family:var(--serif);font-weight:400;font-size:24px;color:var(--deep);margin:40px 0 16px;padding-top:8px;border-top:1px solid var(--line-soft);}
.prose h2:first-child{margin-top:0;border-top:none;padding-top:0;}
.prose h3{font-family:var(--sans);font-weight:700;font-size:15px;text-transform:uppercase;letter-spacing:0.04em;color:var(--blue);margin:32px 0 12px;scroll-margin-top:90px;}
.prose h4{font-family:var(--serif);font-style:italic;font-weight:400;font-size:18px;color:var(--deep);margin:26px 0 10px;}
.prose p{font-size:15.5px;line-height:1.7;color:var(--ink-soft);margin:0 0 16px;}
.prose li{font-size:15.5px;line-height:1.7;color:var(--ink-soft);}
.prose ul, .prose ol{margin:0 0 16px;padding-left:22px;}
.prose > ul, .prose > ol{margin-bottom:16px;}
.prose strong{color:var(--ink);font-weight:700;}
.prose em{color:var(--ink);}
.prose a{color:var(--blue);text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:3px;}
.prose a:hover{text-decoration-color:var(--blue);}
.prose blockquote{margin:0 0 16px;padding:4px 20px;border-left:3px solid var(--peach);color:var(--ink-soft);font-style:italic;}
.prose hr{border:none;border-top:1px solid var(--line);margin:32px 0;}

.prose code{
  font-family:var(--mono);font-size:0.86em;background:var(--paper-dim);
  padding:1px 5px;border-radius:3px;color:var(--blue);
}
.prose pre{
  background:var(--deep);color:#E9EEF3;border-radius:8px;padding:18px 20px;
  overflow-x:auto;margin:0 0 20px;font-size:13px;line-height:1.7;
}
.prose pre code{background:none;padding:0;color:inherit;font-size:1em;}
.prose code.reqn{background:none;padding:0;color:inherit;font-family:inherit;}
.prose img{border-radius:6px;border:1px solid var(--line);margin:6px 0 20px;display:block;}
.prose figure{margin:0 0 20px;}
.prose figcaption{font-family:var(--mono);font-size:12px;color:var(--ink-faint);margin-top:8px;}

.prose table{width:100%;border-collapse:collapse;margin:0 0 24px;font-size:14px;}
.prose table th, .prose table td{
  text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top;
}
.prose table th{font-family:var(--mono);font-size:11.5px;text-transform:uppercase;letter-spacing:0.04em;color:var(--ink-faint);font-weight:600;border-bottom:1px solid var(--ink-faint);}
.prose table td:first-child code{white-space:nowrap;}

/* argument list rendered from Rd tables: first col = name, second = description */
.prose table.arguments td:first-child{width:180px;font-family:var(--mono);color:var(--blue);font-weight:600;white-space:nowrap;}
.prose table.arguments td:first-child code{color:var(--blue);background:none;padding:0;}
.prose table.arguments p{margin:0 0 8px;}
.prose table.arguments p:last-child{margin-bottom:0;}
.prose table.arguments ul{margin:6px 0 8px;}

/* R doc top identity bar */
.doc-topbar{
  display:flex;justify-content:space-between;align-items:baseline;font-family:var(--mono);
  font-size:12px;color:var(--ink-faint);border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:26px;
}

/* ---------------------------------------------------------------- pills / categories */
.pill{
  display:inline-block;font-family:var(--mono);font-size:11px;letter-spacing:0.04em;
  padding:3px 10px;border-radius:20px;border:1px solid var(--line);color:var(--ink-soft);
}

/* ---------------------------------------------------------------- reference index card grid */
.cardgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden;}
@media (max-width:860px){.cardgrid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.cardgrid{grid-template-columns:1fr;}}
.card{background:var(--paper);padding:26px 24px;position:relative;}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;}
.card h3{font-size:15px;text-transform:uppercase;letter-spacing:0.06em;margin:6px 0 12px;font-weight:700;color:var(--deep);}
.card p{font-family:var(--mono);font-size:12.5px;line-height:1.85;color:var(--ink-soft);margin:0;}
.card p code{color:inherit;background:none;padding:0;}
.card p a{text-decoration:none;color:inherit;}
.card p a:hover{text-decoration:underline;}
.c1::before{background:var(--blue);} .c1 p a{color:var(--blue);}
.c2::before{background:var(--rose);} .c2 p a{color:var(--rose);}
.c3::before{background:var(--slate);} .c3 p a{color:var(--slate);}
.c4::before{background:#B58A3E;} .c4 p a{color:#B58A3E;}
.c5::before{background:var(--deep);} .c5 p a{color:var(--deep);}
.c6::before{background:var(--olive);} .c6 p a{color:var(--olive);}

/* reference index full listing */
.refindex-group{margin-bottom:44px;}
.refindex-group h3{font-family:var(--serif);font-style:italic;font-weight:400;font-size:20px;color:var(--deep);margin:0 0 4px;}
.refindex-group .desc{color:var(--ink-soft);font-size:14px;margin:0 0 16px;}
.reftable{width:100%;border-collapse:collapse;}
.reftable tr{border-bottom:1px solid var(--line-soft);}
.reftable td{padding:11px 0;vertical-align:top;}
.reftable td.fn{width:230px;font-family:var(--mono);font-size:13.5px;white-space:nowrap;padding-right:20px;}
.reftable td.fn a{color:var(--blue);text-decoration:none;}
.reftable td.fn a:hover{text-decoration:underline;}
.reftable td.desc{font-size:14px;color:var(--ink-soft);line-height:1.55;}

/* ---------------------------------------------------------------- install / terminal block */
.install{
  background:var(--deep);color:#E9EEF3;border-radius:6px;padding:16px 20px;
  font-family:var(--mono);font-size:13.5px;line-height:1.9;margin-bottom:24px;
}
.install .tag{color:#8FB2CC;}
.install .pkg{color:var(--butter);}

/* ---------------------------------------------------------------- news / changelog */
.news-version{padding:30px 0;border-top:1px solid var(--line);scroll-margin-top:90px;}
.news-version:first-of-type{border-top:none;padding-top:0;}
.news-version-head{display:flex;align-items:baseline;gap:14px;margin-bottom:6px;flex-wrap:wrap;}
.news-version-head h2{font-family:var(--serif);font-style:italic;font-weight:400;font-size:24px;color:var(--deep);margin:0;border:none;padding:0;}
.news-version-head a.perma{font-family:var(--mono);font-size:12px;color:var(--ink-faint);text-decoration:none;}
.news-version-head a.perma:hover{color:var(--blue);}
.news-body ul{margin:10px 0 0;padding-left:20px;}
.news-body li{margin-bottom:8px;}
.news-body li li{list-style:circle;}

/* right-hand version rail: stays put while the changelog scrolls beneath it */
.news-layout{display:grid;grid-template-columns:1fr 160px;gap:56px;align-items:start;padding:8px 0 72px;}
@media (max-width:900px){.news-layout{grid-template-columns:1fr;}}
.news-main{min-width:0;}
.news-sidebar{position:sticky;top:76px;max-height:calc(100vh - 96px);overflow-y:auto;order:2;}
@media (max-width:900px){
  .news-sidebar{position:static;max-height:none;order:-1;border:1px solid var(--line);border-radius:8px;padding:14px 18px;background:var(--paper-panel);}
}
.news-sidebar h5{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:0.08em;color:var(--ink-faint);margin:0 0 10px;}
.news-sidebar ul{list-style:none;margin:0;padding:0;}
.news-sidebar li a{
  display:block;font-family:var(--mono);font-size:13px;color:var(--ink-soft);text-decoration:none;
  padding:4px 0 4px 12px;border-left:2px solid transparent;line-height:1.6;
}
.news-sidebar li a:hover{color:var(--blue);border-left-color:var(--line);}
.news-sidebar li a.current{color:var(--blue);border-left-color:var(--blue);font-weight:600;}

/* ---------------------------------------------------------------- what's new feature rows (home) */
.whatsnew{background:var(--paper-dim);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.feature-row{display:grid;grid-template-columns:220px 1fr;gap:32px;padding:26px 0;border-top:1px solid var(--line);}
.feature-row:first-of-type{border-top:none;}
@media (max-width:700px){.feature-row{grid-template-columns:1fr;gap:10px;}}
.feature-tag{font-family:var(--mono);font-size:12px;letter-spacing:0.06em;color:var(--blue);text-transform:uppercase;padding-top:3px;}
.feature-body h4{margin:0 0 8px;font-size:17px;font-family:var(--serif);font-style:italic;font-weight:400;color:var(--deep);}
.feature-body p{margin:0;color:var(--ink-soft);font-size:15px;line-height:1.65;max-width:64ch;}
.feature-body .stat{color:var(--rose);font-weight:700;font-style:normal;}

/* ---------------------------------------------------------------- authors */
.authorgrid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:8px;overflow:hidden;margin-bottom:44px;}
@media (max-width:760px){.authorgrid{grid-template-columns:1fr;}}
.author-card{background:var(--paper);padding:26px 24px;}
.author-card h3{font-family:var(--serif);font-style:italic;font-weight:400;font-size:19px;margin:0 0 6px;color:var(--deep);}
.author-card .role{font-family:var(--mono);font-size:11.5px;text-transform:uppercase;letter-spacing:0.05em;color:var(--blue);margin:0 0 10px;}
.author-card p{margin:0 0 4px;font-size:14px;color:var(--ink-soft);line-height:1.6;}
.author-card a{color:var(--blue);text-decoration:none;}
.author-card a:hover{text-decoration:underline;}
.contrib-list{font-size:14.5px;line-height:2;color:var(--ink-soft);}
.contrib-list .name{color:var(--ink);font-weight:600;}
.contrib-list .note{color:var(--ink-faint);font-size:13px;}

/* ---------------------------------------------------------------- footer */
footer{padding:52px 0 60px;}
.foot-grid{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:36px;}
.foot-col h5{font-family:var(--mono);font-size:12px;text-transform:uppercase;letter-spacing:0.08em;color:var(--ink-soft);margin:0 0 14px;}
.foot-col p, .foot-col a{font-size:14px;color:var(--ink-soft);line-height:1.7;text-decoration:none;display:block;margin:0 0 4px;}
.foot-col a:hover{color:var(--blue);}
.foot-note{margin-top:34px;font-size:12.5px;color:var(--ink-soft);opacity:0.8;font-family:var(--mono);}

/* ---------------------------------------------------------------- legal text (LICENSE) */
.legal-text{
  font-family:var(--mono);font-size:12.5px;line-height:1.7;color:var(--ink-soft);
  white-space:pre-wrap;word-wrap:break-word;background:none;padding:0;margin:0 0 40px;
}

/* ---------------------------------------------------------------- 404 */
.notfound{padding:120px 0;text-align:center;}
.notfound .code{font-family:var(--mono);font-size:14px;color:var(--blue);letter-spacing:0.1em;}
.notfound h1{font-family:var(--serif);font-style:italic;font-weight:400;font-size:clamp(30px,5vw,46px);color:var(--deep);margin:14px 0 16px;}
.notfound p{color:var(--ink-soft);font-size:16px;}

/* ---------------------------------------------------------------- brand strip (home) */
.brandstrip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--paper-dim);}
.brandstrip-inner{display:flex;align-items:center;gap:36px;padding:32px 0;}
.brandstrip-logo{width:80px;height:auto;flex-shrink:0;}
.brandstrip-stats{min-width:0;}
.stat-badges{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
.stat-badges img{display:block;border-radius:3px;}
@media (max-width:640px){.brandstrip-inner{flex-direction:column;align-items:flex-start;gap:18px;}}

/* ---------------------------------------------------------------- ridge svg caption (home hero reuse) */
.ridge-wrap{position:relative;}
.ridge-caption{position:absolute;bottom:10px;right:6px;font-family:var(--mono);font-size:11px;color:var(--ink-soft);letter-spacing:0.04em;}