/* BXC Computing — shared styles */
:root {
  --ink: #0c1424;
  --ink-2: #18223a;
  --paper: #f6f4ef;
  --card: #ffffff;
  --line: #e2ddd2;
  --muted: #586174;
  --accent: #2f5bff;
  --accent-ink: #1d3fd0;
  --lime: #c8f560;
  --radius: 14px;
  --max: 1120px;
  --display: "Bricolage Grotesque", system-ui, sans-serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
}
img, iframe { max-width: 100%; }
a { color: var(--accent-ink); }
h1, h2, h3 {
  font-family: var(--display);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.4rem, 5.6vw, 4.2rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.7rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-ink);
  margin-bottom: 14px;
}
.lede { font-size: 1.15rem; color: var(--muted); max-width: 60ch; }
.section-head { max-width: 720px; margin-bottom: 48px; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: #fff; padding: 10px 16px; z-index: 100;
}
.skip:focus { left: 12px; top: 12px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 22px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  font: 600 1rem var(--body);
  text-decoration: none;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible, a:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 3px;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); }
.btn-ghost { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-ghost:hover { background: var(--ink); color: #fff; }
.btn-lime { background: var(--lime); color: var(--ink); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(246, 244, 239, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font: 700 1.2rem var(--display); color: var(--ink); text-decoration: none; letter-spacing: -0.01em;
}
.brand-mark {
  width: 30px; height: 30px; border-radius: 8px; background: var(--ink);
  display: grid; place-items: center;
}
.brand-mark::before {
  content: ""; width: 12px; height: 12px; background: var(--lime);
  transform: rotate(45deg); border-radius: 2px;
}
.brand span.light { font-weight: 400; color: var(--muted); }
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; margin: 0; padding: 0; }
.nav-links a { color: var(--ink); text-decoration: none; font-weight: 500; font-size: 0.97rem; }
.nav-links a:not(.btn):hover, .nav-links a:not(.btn)[aria-current="page"] { color: var(--accent-ink); }
.nav-links .btn { padding: 10px 18px; font-size: 0.95rem; color: #fff; }
.nav-toggle {
  display: none; background: none; border: 1.5px solid var(--ink); border-radius: 10px;
  width: 44px; height: 44px; cursor: pointer; padding: 0;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  display: block; width: 18px; height: 2px; background: var(--ink); margin: 0 auto; position: relative; content: "";
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }

/* Hero */
.hero { padding: 80px 0 96px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lede { margin: 20px 0 32px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note { margin-top: 18px; font-size: 0.9rem; color: var(--muted); }

.report {
  background: var(--card); border: 1px solid var(--line); border-radius: 20px;
  padding: 26px; box-shadow: 0 30px 60px -30px rgba(12, 20, 36, 0.35);
  transform: rotate(1.2deg);
}
.report-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 20px; }
.report-top strong { font-family: var(--display); font-size: 1.05rem; }
.report-top small { color: var(--muted); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; }
.metric { margin-bottom: 16px; }
.metric-row { display: flex; justify-content: space-between; font-size: 0.9rem; font-weight: 500; margin-bottom: 6px; }
.metric-row span:last-child { color: var(--muted); font-variant-numeric: tabular-nums; }
.bar { height: 8px; border-radius: 99px; background: #ece8de; overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: 99px; background: var(--accent); }
.bar i.low { background: #f08a4b; }
.finding {
  margin-top: 20px; padding: 14px 16px; border-radius: 12px;
  background: var(--ink); color: #fff; font-size: 0.92rem;
}
.finding b { color: var(--lime); display: block; font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 4px; }

/* Process (dark) */
.dark { background: var(--ink); color: #fff; }
.dark .eyebrow { color: var(--lime); }
.dark .lede { color: #b4bccb; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: step; border-top: 1px solid #2b3650; }
.step { padding: 28px 24px 8px 0; counter-increment: step; position: relative; }
.step + .step { padding-left: 24px; border-left: 1px solid #2b3650; }
.step::before {
  content: "0" counter(step);
  font: 700 0.85rem var(--display); color: var(--lime); letter-spacing: 0.1em;
  display: block; margin-bottom: 18px;
}
.step p { color: #b4bccb; font-size: 0.97rem; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px;
}
.card p { color: var(--muted); margin-bottom: 0; }
.card ul { margin: 14px 0 0; padding-left: 18px; color: var(--muted); font-size: 0.95rem; }
.card .tag {
  display: inline-block; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent-ink); background: #e6ebff; padding: 4px 10px; border-radius: 99px; margin-bottom: 16px;
}

.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; }
.principles div { border-top: 2px solid var(--ink); padding-top: 20px; }
.principles p { color: var(--muted); }

/* Video teaser */
.teaser {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
  background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 40px;
}
.teaser-screen {
  aspect-ratio: 16 / 9; border-radius: 14px; background: linear-gradient(135deg, var(--ink), #24345c);
  display: grid; place-items: center; text-decoration: none;
}
.play {
  width: 74px; height: 74px; border-radius: 50%; background: var(--lime); display: grid; place-items: center;
  transition: transform .15s ease;
}
.teaser-screen:hover .play { transform: scale(1.08); }
.play::before {
  content: ""; border-style: solid; border-width: 12px 0 12px 20px;
  border-color: transparent transparent transparent var(--ink); margin-left: 5px;
}

/* FAQ */
.faq { max-width: 780px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 22px 40px 22px 0; position: relative;
  font: 600 1.1rem var(--display);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 18px; font-size: 1.5rem; font-weight: 400; color: var(--accent-ink); }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--muted); padding-right: 40px; }

/* CTA band */
.band { background: var(--accent); color: #fff; border-radius: 24px; padding: 56px; display: flex; flex-wrap: wrap; gap: 28px; align-items: center; justify-content: space-between; }
.band h2 { margin: 0 0 8px; }
.band p { margin: 0; color: #dfe6ff; max-width: 48ch; }

/* Page hero (inner pages) */
.page-hero { padding: 72px 0 40px; }
.page-hero h1 { font-size: clamp(2.2rem, 4.6vw, 3.4rem); }

/* Video page */
.player {
  aspect-ratio: 16 / 9; width: 100%; border-radius: 18px; overflow: hidden;
  background: var(--ink); box-shadow: 0 30px 60px -30px rgba(12, 20, 36, 0.45);
}
.player iframe { width: 100%; height: 100%; border: 0; display: block; }
.player-empty { height: 100%; display: grid; place-items: center; text-align: center; color: #b4bccb; padding: 24px; }
.player-empty strong { display: block; color: #fff; font: 600 1.3rem var(--display); margin-bottom: 8px; }
.player-empty code { background: #24304b; padding: 2px 8px; border-radius: 6px; color: var(--lime); }
.channel-row { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; margin-top: 28px; }
.channel-row p { margin: 0; color: var(--muted); max-width: 56ch; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1.25fr 0.75fr; gap: 48px; align-items: start; }
.form { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 36px; }
.field { margin-bottom: 20px; }
.field-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
label { display: block; font-weight: 600; font-size: 0.92rem; margin-bottom: 7px; }
label .opt { font-weight: 400; color: var(--muted); }
input, select, textarea {
  width: 100%; padding: 13px 14px; border: 1.5px solid #cfc9bb; border-radius: 10px;
  font: 1rem var(--body); color: var(--ink); background: #fff;
}
textarea { min-height: 140px; resize: vertical; }
.form-status { margin: 16px 0 0; font-size: 0.95rem; font-weight: 500; min-height: 1.5em; }
.form-status.ok { color: #1a7a3f; }
.form-status.err { color: #b3261e; }
.hp { position: absolute; left: -9999px; }
.next { list-style: none; counter-reset: n; padding: 0; margin: 0 0 32px; }
.next li { counter-increment: n; padding: 0 0 22px 46px; position: relative; }
.next li::before {
  content: counter(n); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%;
  background: var(--ink); color: var(--lime); display: grid; place-items: center; font: 700 0.85rem var(--display);
}
.next strong { display: block; font-family: var(--display); }
.next span { color: var(--muted); font-size: 0.95rem; }
.direct { border-top: 1px solid var(--line); padding-top: 22px; font-size: 0.97rem; }
.direct p { margin-bottom: 6px; }

/* Footer */
.site-footer { background: var(--ink); color: #b4bccb; padding: 56px 0 32px; margin-top: 88px; font-size: 0.95rem; }
.footer-grid { display: flex; flex-wrap: wrap; gap: 32px; justify-content: space-between; margin-bottom: 36px; }
.site-footer .brand { color: #fff; }
.site-footer .brand-mark { background: #24304b; }
.site-footer p { max-width: 38ch; margin-top: 12px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: flex; gap: 24px; flex-wrap: wrap; }
.site-footer a { color: #fff; text-decoration: none; }
.site-footer a:hover { color: var(--lime); }
.legal { border-top: 1px solid #2b3650; padding-top: 22px; font-size: 0.85rem; }

/* Responsive */
@media (max-width: 900px) {
  .section { padding: 64px 0; }
  .hero { padding: 48px 0 64px; }
  .hero-grid, .teaser, .contact-grid { grid-template-columns: 1fr; }
  .report { transform: none; }
  .steps { grid-template-columns: 1fr 1fr; }
  .step, .step + .step { padding: 24px 16px 8px 0; border-left: 0; border-bottom: 1px solid #2b3650; }
  .principles { grid-template-columns: 1fr; gap: 24px; }
  .band { padding: 36px 28px; }
  .teaser { padding: 24px; }
}
@media (max-width: 680px) {
  .wrap { padding: 0 18px; }
  .nav-toggle { display: block; }
  .nav-links {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px 18px 18px;
  }
  .nav-links.open { display: flex; }
  .nav-links a:not(.btn) { display: block; padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav-links .btn { margin-top: 14px; justify-content: center; }
  .cards, .steps, .field-pair { grid-template-columns: 1fr; }
  .form { padding: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .play { transition: none; }
}