/* Shared palette/typography for the RfLab micro-site - same brand palette RfLab's own app uses
   (see RfLab.App/Theme/ScottPlotThemeApplier.cs: #004B98 Blueprint Light blue, #F5A623 Studio Dark
   gold), copied/trimmed from BodeLab's sibling site (www/css/style.css) for visual consistency
   across the same author's tool ecosystem - only the parts RfLab's own two pages actually use. */
:root{
  --bg:#181A1B;
  --bg-deep:#111213;
  --panel:#222527;
  --gold:#F5A623;
  --gold-soft:#ffc568;
  --blue:#4A90E2;
  --text:#D1D5DB;
  --text-bright:#FFFFFF;
  --text-dim:#9CA3AF;
  --line:#374151;
  --card:rgba(255,255,255,.03);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,sans-serif;
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--gold);text-decoration:none}
a:hover{color:var(--gold-soft)}

/* ---------- Top nav ---------- */
.topnav{
  max-width:1000px;margin:0 auto;padding:22px 28px;
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:16px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:1.25rem;color:var(--text-bright)}
.brand img{width:32px;height:32px;border-radius:8px}
.navlinks{display:flex;gap:22px;font-size:.9rem}
.navlinks a{color:var(--text-dim)}
.navlinks a.active,.navlinks a:hover{color:var(--gold)}

/* Mobile nav - CSS-only checkbox toggle (no JS needed), same pattern as BodeLab's own site. */
.nav-toggle-checkbox{display:none}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:26px;height:22px;cursor:pointer}
.nav-toggle span{display:block;height:2px;background:var(--text-bright);border-radius:1px}
@media(max-width:820px){
  .nav-toggle{display:flex}
  .navlinks{
    display:none;flex-direction:column;gap:2px;width:100%;
    order:3;margin-top:8px;padding-top:12px;border-top:1px solid var(--line);
  }
  .nav-toggle-checkbox:checked ~ .navlinks{display:flex}
  .navlinks a{padding:8px 4px}
}

/* ---------- Hero ---------- */
.hero-wrap{max-width:800px;margin:0 auto;padding:48px 28px 0;text-align:center}
.hero-logo{
  width:96px;height:96px;margin:0 auto 24px;display:block;border-radius:20px;
  box-shadow:0 20px 50px -20px rgba(0,0,0,.7);
}
.hero-eyebrow{
  font-size:.72rem;letter-spacing:.32em;text-transform:uppercase;
  color:var(--gold);font-weight:600;display:block;margin-bottom:16px;
}
.hero-h1{font-size:clamp(2rem,5vw,3rem);font-weight:700;line-height:1.15;color:var(--text-bright)}
.hero-lede{margin:18px auto 0;max-width:520px;color:var(--text-dim);font-size:1.02rem;line-height:1.6}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:32px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 22px;border-radius:10px;font-size:.92rem;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .18s;
}
.btn-primary{background:var(--gold);color:#1a1204}
.btn-primary:hover{background:var(--gold-soft);color:#1a1204}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}

/* mock preview window */
.mockup-wrap{max-width:760px;margin:48px auto 0;padding:0 28px}
.mockup-window{
  border-radius:14px;overflow:hidden;border:1px solid var(--line);
  box-shadow:0 50px 100px -40px rgba(0,0,0,.8);background:var(--bg-deep);
}
.mockup-bar{display:flex;align-items:center;gap:8px;padding:10px 16px;background:rgba(255,255,255,.03);border-bottom:1px solid var(--line)}
.mockup-dot{width:11px;height:11px;border-radius:50%}
.mockup-dot:nth-child(1){background:#ff5f57}
.mockup-dot:nth-child(2){background:#febc2e}
.mockup-dot:nth-child(3){background:#28c840}
.mockup-bar-title{flex:1;text-align:center;font-size:.76rem;color:var(--text-dim);letter-spacing:.06em}

/* fixed-height "letterbox" so switching between screenshots of different aspect ratios doesn't
   resize the mockup box - every image scales to fit the same height, centered. */
.mockup-screen{
  height:460px;background:var(--bg-deep);
  display:flex;align-items:center;justify-content:center;overflow:hidden;
}
.mockup-screen img{max-width:100%;max-height:100%;width:auto;height:100%;object-fit:contain;display:block}

/* screenshot tabs - a tab strip inside the mockup window frame, below the screenshot */
.screen-tabs{
  display:flex;gap:6px;justify-content:center;flex-wrap:wrap;
  padding:10px 12px;background:rgba(255,255,255,.03);border-top:1px solid var(--line);
}
.screen-tab{
  padding:7px 14px;border-radius:8px;border:1px solid transparent;background:transparent;
  color:var(--text-dim);font-size:.78rem;font-family:inherit;cursor:pointer;transition:all .18s;
  white-space:nowrap;
}
.screen-tab:hover{color:var(--text-bright)}
.screen-tab.active{background:var(--gold);color:#1a1204;font-weight:600}

/* ---------- Feature strip ---------- */
.section{max-width:1000px;margin:0 auto;padding:64px 28px}
.section-title{font-size:1.6rem;font-weight:700;color:var(--text-bright);text-align:center;margin-bottom:36px}
.section-copy{max-width:640px;margin:0 auto;color:var(--text-dim);font-size:.98rem;line-height:1.7;text-align:center}
.section-copy + .section-copy{margin-top:14px}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px}
.feature-item{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.feature-item h3{color:var(--gold-soft);font-size:1.05rem;margin-bottom:8px}
.feature-item p{color:var(--text-dim);font-size:.9rem;line-height:1.55}

/* ---------- Manual / prose ---------- */
.prose{max-width:760px;margin:0 auto;padding:24px 28px 90px;line-height:1.7;font-size:.98rem}
.prose h1{font-size:2rem;color:var(--text-bright);margin:0 0 10px}
.prose h2{
  font-size:1.4rem;font-weight:700;color:var(--gold-soft);
  margin:36px 0 14px;padding-bottom:8px;border-bottom:1px solid var(--line);
}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:1.1rem;color:var(--text-bright);margin:24px 0 10px}
.prose p{margin:0 0 14px;color:var(--text)}
.prose ul,.prose ol{margin:0 0 14px;padding-left:22px;color:var(--text)}
.prose li{margin-bottom:6px}
.prose strong{color:var(--gold-soft)}
.prose code{
  background:rgba(255,255,255,.08);padding:1px 6px;border-radius:4px;
  font-family:Consolas,'Cascadia Code',monospace;font-size:.86em;
}
.prose table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:12px 0 20px}
.prose th,.prose td{padding:9px 12px;border:1px solid var(--line);text-align:left;vertical-align:top;min-width:180px}
.prose th{color:var(--text-bright);background:var(--panel)}

/* ---------- FAQ accordion (faq.html only) - each <details> replaces what would otherwise be a
   .prose h2 section; the ::marker default triangle is swapped for a +/- indicator that rotates
   on [open], matching the gold accent used for h2 elsewhere. ---------- */
.prose details{
  border:1px solid var(--line);border-radius:10px;margin:0 0 12px;
  background:var(--card);overflow:hidden;
}
.prose details > summary{
  list-style:none;cursor:pointer;padding:14px 44px 14px 18px;position:relative;
  font-size:1.02rem;font-weight:600;color:var(--text-bright);
}
.prose details > summary::-webkit-details-marker{display:none}
.prose details > summary::after{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  color:var(--gold);font-size:1.2rem;font-weight:700;line-height:1;
}
.prose details[open] > summary::after{content:"\2212"}
.prose details[open] > summary{border-bottom:1px solid var(--line)}
.prose details > summary:hover{color:var(--gold-soft)}
.prose details > *:not(summary){margin-left:18px;margin-right:18px}
.prose details > summary + *{margin-top:14px}
.prose details > *:last-child{margin-bottom:18px}

/* ---------- Download page ---------- */
.download-box{
  max-width:640px;margin:0 auto;text-align:center;
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:36px 32px;
}
.download-box p{color:var(--text-dim);font-size:.92rem;line-height:1.65;margin:0}
.version-note{margin-top:16px;font-size:.82rem;color:var(--text-dim)}
.download-box--primary{border-color:var(--gold);background:rgba(245,166,35,.06)}
.download-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--gold);color:#1a1204;font-size:.72rem;font-weight:700;
  padding:4px 12px;border-radius:999px;margin-bottom:16px;letter-spacing:.02em;
}

/* ---------- Changelog ("What's New", download.html only) ---------- */
.changelog{max-width:760px;margin:0 auto;padding:0 28px 50px}
.ts-subtitle{text-align:center;color:var(--text-dim);font-size:.88rem;margin:-8px 0 28px}
.changelog-inner{
  font-family:'Cascadia Code',Consolas,monospace;font-size:.85rem;line-height:1.75;
  background:var(--bg-deep);
}
.changelog-inner ul{list-style:none;margin:0;padding:0}
.changelog-inner li{color:var(--text);margin:0 0 4px}
.changelog-inner li:last-child{margin-bottom:0}
.changelog-inner li::before{content:"- ";color:var(--gold-soft)}

/* ---------- Footer ---------- */
footer{
  text-align:center;padding:36px 24px 56px;color:var(--text-dim);font-size:.8rem;
  border-top:1px solid var(--line);max-width:1000px;margin:40px auto 0;
}
footer a{color:var(--gold)}
footer a:hover{color:var(--gold-soft)}

@media(max-width:600px){
  .hero-wrap{padding:36px 18px 0}
  .mockup-wrap{padding:0 12px;margin-top:36px}
  .mockup-screen{height:280px}
  .screen-tabs{gap:4px;padding:6px}
  .screen-tab{padding:5px 9px;font-size:.68rem}
  .prose{padding:20px 18px 60px}
  .download-box{padding:28px 20px}
  .section-copy{font-size:.9rem}
}