/*
  CodeRhino Labs - site styles
  Dark, professional theme inspired by the provided logo.
*/

:root {
  --bg: #070b14;
  --bg-elev: #0b1221;
  --text: #e6ecff;
  --muted: #a9b6d6;
  --brand: #1e4dd8; /* strong cobalt */
  --brand-2: #2f6bff; /* lighter accent */
  --accent: #64a1ff;
  --ring: #1c3aa9;
  --ok: #19d18d;
  --warn: #ffcc66;
  --danger: #ff6b6b;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 800px at 20% -10%, rgba(46, 92, 255, .12), transparent 60%),
              radial-gradient(1200px 800px at 120% 10%, rgba(30, 77, 216, .12), transparent 50%),
              var(--bg);
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.skip-link {
  position: absolute; left: -999px; top: auto; width: 1px; height: 1px; overflow: hidden;
}
.skip-link:focus { position: static; width: auto; height: auto; padding: .5rem 1rem; background: var(--brand); color: #fff; }

/* Header */
.site-header { position: sticky; top: 0; backdrop-filter: saturate(140%) blur(8px); background: rgba(7,11,20,.6); border-bottom: 1px solid rgba(255,255,255,.06); z-index: 20; }
.nav { display: flex; align-items: center; justify-content: flex-start; padding: .8rem 0; }
.brand { display: inline-flex; align-items: center; gap: .6rem; color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: .2px; }
.brand img { filter: drop-shadow(0 0 16px rgba(46,107,255,.35)); }

.site-nav { display: flex; align-items: center; gap: 1rem; margin-left: auto; }
.site-nav a { color: var(--text); text-decoration: none; opacity: .9; padding: .45rem .7rem; border-radius: 8px; font-size: 1.1rem; }
.site-nav a[aria-current="page"] { background: rgba(255,255,255,.06); }
.site-nav .btn.small { padding: .45rem .8rem; }

/* Dropdown menu */
.site-nav .menu { position: relative; }
.site-nav .menu-button { background: transparent; border: 0; color: var(--text); opacity: .9; padding: .45rem .7rem; border-radius: 8px; cursor: pointer; font: inherit; font-size: 1.1rem; }
.site-nav .submenu { display: none; position: absolute; top: 100%; left: 0; background: var(--bg-elev); border: 1px solid rgba(255,255,255,.06); border-radius: 10px; box-shadow: var(--shadow); min-width: 180px; padding: .3rem; }
.site-nav .submenu a { display: block; }
.site-nav .menu:hover .submenu,
.site-nav .menu:focus-within .submenu,
.site-nav .menu.open .submenu { display: block; }

.nav-toggle { display: none; background: rgba(255,255,255,.06); color: var(--text); border: 1px solid rgba(255,255,255,.1); padding: .5rem .75rem; border-radius: 10px; }

@media (max-width: 820px) {
  .nav { gap: .5rem; }
  .nav-toggle { display: inline-block; }
  .site-nav { position: absolute; right: 4vw; top: 60px; background: var(--bg-elev); padding: .6rem; border-radius: 12px; border: 1px solid rgba(255,255,255,.06); box-shadow: var(--shadow); display: none; flex-direction: column; }
  .site-nav.open { display: flex; }
  .site-nav .submenu { position: static; border: 0; padding: 0; box-shadow: none; }
  .site-nav .menu:hover .submenu { display: none; }
}

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: .5rem; border-radius: 12px; text-decoration: none; font-weight: 600; }
.btn.primary { background: linear-gradient(90deg, var(--brand), var(--brand-2)); color: white; padding: .8rem 1.1rem; box-shadow: 0 10px 30px rgba(30,77,216,.35); }
.btn.ghost { color: var(--text); border: 1px solid rgba(255,255,255,.14); padding: .7rem 1rem; background: rgba(255,255,255,.03); }
.btn.small { font-size: .95rem; }

/* Hero */
.hero { padding: 72px 0 42px; border-bottom: 1px solid rgba(255,255,255,.06); }
.grid-2 { display: grid; grid-template-columns: 1.2fr 1fr; align-items: center; gap: 2rem; }
@media (max-width: 940px) { .grid-2 { grid-template-columns: 1fr; } .hero { padding-top: 48px; } }
.hero h1 { font-size: clamp(2rem, 4vw + 1rem, 3.2rem); line-height: 1.1; margin: 0 0 12px; }
.hero .accent { display: block; font-weight: 800; background: linear-gradient(90deg, #7fb3ff, #2f6bff); -webkit-background-clip: text; background-clip: text; color: transparent; margin-top: .25rem; }
.hero p { color: var(--muted); font-size: 1.1rem; }
.hero p.tagline { font-size: 1.15rem; font-weight: 500; color: #c9d6ff; font-style: italic; margin-bottom: .8rem; line-height: 1.5; }
.cta-row { display: flex; gap: .8rem; margin: 1.1rem 0 1.2rem; flex-wrap: wrap; }
.proof { display: flex; gap: 1rem; list-style: none; padding: 0; margin: .8rem 0 0; color: #c9d6ff; opacity: .9; flex-wrap: wrap; }

.hero-art { display: grid; place-items: center; }
.logo-ring { width: 320px; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(60% 60% at 50% 40%, rgba(46,107,255,.15), transparent 70%),
                                    radial-gradient(50% 50% at 50% 50%, rgba(100,161,255,.2), transparent 60%);
  border: 6px solid rgba(47, 107, 255, .6); display: grid; place-items: center; box-shadow: inset 0 0 40px rgba(46,107,255,.2);
}
.logo-ring img { width: 77.5%; height: auto; max-height: 77.5%; filter: drop-shadow(0 8px 30px rgba(47,107,255,.35)); }

/* Sections */
.section { padding: 56px 0; }
.section.highlight { background: linear-gradient(180deg, rgba(47,107,255,.08), rgba(255,255,255,0)); border-top: 1px solid rgba(255,255,255,.06); }

.section.approach { background: linear-gradient(180deg, rgba(47,107,255,.06), transparent); border-top: 1px solid rgba(255,255,255,.06); border-bottom: 1px solid rgba(255,255,255,.06); padding: 48px 0; }
.approach-content { max-width: 900px; margin: 0 auto; text-align: center; }
.approach-content h2 { margin-bottom: .8rem; }
.approach-content .lead { font-size: 1.2rem; line-height: 1.65; color: #d6e1ff; font-weight: 400; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 1rem; }
@media (max-width: 940px) { .cards { grid-template-columns: 1fr; } }
.card { background: rgba(255,255,255,.02); border: 1px solid rgba(255,255,255,.08); border-radius: 16px; padding: 1.1rem; box-shadow: var(--shadow); }
.card h3 { margin-top: .2rem; }
.card ul { margin: .6rem 0 0 1rem; color: #c7d4ff; }

.form-section { background: rgba(255,255,255,.02); border: 1px solid rgba(255,255,255,.08); border-radius: 16px; padding: 2rem; margin: 2rem auto; max-width: 600px; }

.list-check { list-style: none; padding: 0; }
.list-check li { position: relative; padding-left: 1.4rem; margin: .5rem 0; }
.list-check li::before { content: ""; position: absolute; left: 0; top: .35rem; width: .9rem; height: .9rem; border-radius: 50%; background: radial-gradient(circle at 30% 30%, #7fffd4, #19d18d); box-shadow: 0 0 12px rgba(25,209,141,.6); }
/* Compact variant to reduce visual density */
.list-check.compact li { margin: .35rem 0; padding-left: 1.2rem; }

/* (pruned) .chips, .chip unused */

.reading { width: min(800px, 92vw); }
.reading p.lead { font-size: 1.125rem; line-height: 1.8; color: var(--text); }
.subtle { color: #c9d4ff; opacity: .9; }

.page-hero { padding: 48px 0 24px; border-bottom: 1px solid rgba(255,255,255,.06); background: linear-gradient(180deg, rgba(47,107,255,.08), rgba(255,255,255,0)); }
/* Subtle section label for reduced visual weight */
.eyebrow { font-size: .9rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-top: 2rem; margin-bottom: .4rem; }

/* (pruned) .grid-3 and .contact-card unused */

/* Footer */
.site-footer { border-top: 1px solid rgba(255,255,255,.06); padding: 28px 0; margin-top: 24px; }
.footer { text-align: center; }
.cluster { display: inline-flex; align-items: center; gap: .6rem; }
.small { font-size: .95rem; color: var(--muted); text-align: center; }
@media (max-width: 820px) {
  .footer { text-align: center; }
  .small { text-align: center; }
}

/* Founder blurb */
.founder { display: flex; align-items: center; gap: .8rem; margin: .4rem 0 1rem; }
.avatar { width: 56px; height: 56px; border-radius: 50%; border: 1px solid rgba(255,255,255,.12); background: rgba(255,255,255,.04); object-fit: cover; display: inline-block; }
@media (max-width: 640px) { .avatar { width: 48px; height: 48px; } }

/* 404 */
.not-found { display: grid; place-items: center; height: 100vh; background: radial-gradient(900px 600px at 50% 30%, rgba(46,107,255,.08), transparent 60%), var(--bg); }
.center { text-align: center; }
.nf-logo { opacity: .9; margin-bottom: .5rem; }

/* Links */
a { color: #a9c6ff; }
a:hover { color: #cbe0ff; }

/* Utilities */
/* (pruned) .grid-auto unused */
.hidden { display: none !important; }

/* Forms */
.form { display: grid; gap: 1rem; }
.form-row { display: grid; gap: 1rem; grid-template-columns: 1fr 1fr; }
@media (max-width: 720px) { .form-row { grid-template-columns: 1fr; } }
.field label { display: block; font-weight: 600; margin-bottom: .35rem; }
.field input, .field select, .field textarea {
  width: 100%; color: var(--text); background: rgba(255,255,255,.02);
  border: 1px solid rgba(255,255,255,.14); border-radius: 10px; padding: .7rem .8rem;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px rgba(47,107,255,.25); }
.form-status { align-self: center; color: var(--muted); margin-left: .6rem; }