/* Data Designs — static rebuild
   Gritty, technical, dark. Monospace UI + heavy industrial display type. */

:root {
  --bg: #04060c;
  --bg-alt: #070a12;
  --panel: #0a0e18;
  --panel-2: #0e1320;
  --border: #1a2335;
  --text: #f2f5fb;
  --muted: #98a3ba;
  --blue: #3b6dff;        /* electric accent / underlines */
  --blue-bright: #5b86ff;
  --peri: #aec0ec;        /* periwinkle button */
  --peri-hover: #c4d2f5;
  --radius: 4px;
  --maxw: 1180px;
  --narrow: 760px;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --display: "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--mono);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}

/* Gritty background: blue light-streak glow + faint technical grid. */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(120% 90% at 100% 100%, rgba(59, 109, 255, 0.18), transparent 55%),
    radial-gradient(80% 60% at 0% 0%, rgba(59, 109, 255, 0.05), transparent 60%),
    var(--bg);
}
body::after {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: 0.6;
  background-image:
    linear-gradient(rgba(120, 150, 220, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 150, 220, 0.04) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(circle at 50% 25%, #000, transparent 85%);
  mask-image: radial-gradient(circle at 50% 25%, #000, transparent 85%);
}

img { max-width: 100%; height: auto; }
a { color: var(--blue-bright); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.wrap.narrow { max-width: var(--narrow); }
.center { text-align: center; }
.muted { color: var(--muted); }
.lead { font-size: 1.05rem; color: var(--muted); margin: 0 auto 1.5rem; max-width: 62ch; line-height: 1.75; }

h1, h2, h3, h4 {
  font-family: var(--display);
  line-height: 1.02;
  font-weight: 700;
  font-stretch: 125%;        /* expanded / wide industrial */
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.1rem, 5vw, 3.3rem); }
h2 { font-size: clamp(1.5rem, 3.2vw, 2.2rem); }
h3 { font-size: 1.2rem; font-weight: 700; letter-spacing: 0; }

.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--blue); color: #fff;
  padding: 10px 16px; z-index: 200; font-weight: 600; font-family: var(--mono);
}
.skip-link:focus { left: 0; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(4, 6, 12, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand {
  display: inline-flex; align-items: center; gap: 11px; font-family: var(--display);
  font-weight: 800; font-size: 1.2rem; color: var(--text);
  text-transform: uppercase; letter-spacing: 0.01em;
}
.brand:hover { text-decoration: none; }
.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav a {
  color: var(--muted); font-family: var(--mono); font-weight: 500; font-size: 0.95rem;
  padding-bottom: 3px; border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--text); text-decoration: none; }
.site-nav a.active { color: var(--text); border-bottom-color: var(--blue); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0; transition: 0.25s; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; background: var(--peri); color: #05070d;
  font-family: var(--mono); font-weight: 700; padding: 15px 30px; border-radius: 999px;
  border: 0; cursor: pointer; font-size: 0.98rem; letter-spacing: 0.01em;
  transition: background 0.15s ease, transform 0.15s ease;
}
.btn:hover { text-decoration: none; background: var(--peri-hover); transform: translateY(-2px); }
.btn-sm { padding: 9px 18px; font-size: 0.86rem; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { background: rgba(59, 109, 255, 0.08); border-color: var(--blue); }

.site-nav .btn { color: #05070d; border: 0; padding-bottom: 9px; }

/* ---------- Hero (two-column, screenshot-style) ---------- */
.hero { position: relative; padding: 80px 0 96px; }
.hero-grid {
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center;
  min-height: 62vh;
}
.hero-title h1 { margin: 0; }
.hero-title strong { font-weight: 700; }
.hero-title {
  font-family: var(--display); font-weight: 700; font-stretch: 125%; text-transform: uppercase;
  font-size: clamp(2.7rem, 7.2vw, 5.4rem); line-height: 0.92; letter-spacing: -0.03em;
  color: #fff;
}
.hero-rule { display: block; width: 200px; max-width: 70%; height: 6px; background: var(--blue);
  margin-top: 30px; box-shadow: 0 0 22px rgba(59, 109, 255, 0.6); }
.hero-sub { font-family: var(--mono); font-size: 1.1rem; color: var(--muted); line-height: 1.75; }
.hero-sub p { margin: 0 0 10px; }
.hero-sub strong { color: var(--text); font-weight: 600; }
.hero-cta { display: flex; flex-direction: column; align-items: flex-start; gap: 18px; margin-top: 32px; }
.hero-cta.center { align-items: center; }
.hero-link { font-family: var(--mono); font-weight: 600; color: var(--blue-bright); font-size: 0.95rem; }

/* ---------- Page hero ---------- */
.page-hero { padding: 76px 0 30px; text-align: center; position: relative; }
.page-hero h1 { margin: 0 auto 16px; text-transform: uppercase; letter-spacing: -0.02em; font-weight: 700; }

/* ---------- Sections ---------- */
.section { padding: 72px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-title { margin: 0 0 30px; text-transform: uppercase; letter-spacing: -0.01em; }
.page-hero + .section { padding-top: 44px; }

/* ---------- Prose ---------- */
.prose { font-size: 1rem; line-height: 1.8; }
.prose h1 { font-size: 1.7rem; margin: 2rem 0 1rem; text-transform: uppercase; }
.prose h2 { margin: 2.2rem 0 0.9rem; }
.prose h3 { margin: 2rem 0 0.7rem; color: var(--text); text-transform: uppercase; letter-spacing: 0; font-size: 1.15rem; }
.prose p { margin: 0 0 1.2rem; }
.prose ul, .prose ol { margin: 0 0 1.3rem; padding-left: 1.3rem; }
.prose li { margin: 0.5rem 0; }
.prose li::marker { color: var(--blue); }
.prose li p { margin: 0; }
.prose a { color: var(--blue-bright); text-decoration: underline; text-underline-offset: 2px; }
.prose strong { color: #fff; }
.prose blockquote { border-left: 3px solid var(--blue); margin: 1.5rem 0; padding: 0.4rem 0 0.4rem 1.3rem; color: var(--muted); }

/* ---------- Accordion ---------- */
.accordion { display: flex; flex-direction: column; gap: 12px; }
.accordion-item {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: border-color 0.2s, background 0.2s;
}
.accordion-item[open] { border-color: var(--blue); background: var(--panel-2); }
.accordion-item summary {
  list-style: none; cursor: pointer; padding: 20px 24px; font-family: var(--display);
  font-weight: 700; font-size: 1.08rem; text-transform: uppercase; letter-spacing: -0.01em;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.accordion-item summary::-webkit-details-marker { display: none; }
.acc-icon { position: relative; width: 16px; height: 16px; flex: 0 0 16px; }
.acc-icon::before, .acc-icon::after {
  content: ""; position: absolute; background: var(--blue); top: 50%; left: 50%;
  transform: translate(-50%, -50%); transition: 0.25s;
}
.acc-icon::before { width: 16px; height: 2px; }
.acc-icon::after { width: 2px; height: 16px; }
.accordion-item[open] .acc-icon::after { transform: translate(-50%, -50%) rotate(90deg); opacity: 0; }
.accordion-body { padding: 0 24px 22px; color: var(--muted); }
.accordion-body p:first-child { margin-top: 0; }
.accordion-body strong { color: var(--text); }
.accordion-body ul { padding-left: 1.2rem; }
.accordion-body li::marker { color: var(--blue); }

/* ---------- CTA band ---------- */
.cta-band { background: var(--bg-alt); border-top: 1px solid var(--border); }
.cta-band .section-title { margin-bottom: 14px; }

/* ---------- Blog cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 18px; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  transition: transform 0.18s ease, border-color 0.2s ease; overflow: hidden;
}
.card:hover { transform: translateY(-4px); border-color: var(--blue); }
.card-link { display: block; color: var(--text); height: 100%; }
.card-link:hover { text-decoration: none; }
.card-media { display: block; aspect-ratio: 16 / 9; overflow: hidden;
  background: linear-gradient(120deg, #0e1320, #161f36); border-bottom: 1px solid var(--border); }
.card-media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform 0.35s ease; }
.card:hover .card-media img { transform: scale(1.04); }
.card-text { display: block; padding: 26px; }
.card time { color: var(--blue-bright); font-family: var(--mono); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; }
.card h2 { font-size: 1.2rem; margin: 12px 0 12px; text-transform: uppercase; letter-spacing: -0.01em; }
.card p { color: var(--muted); font-size: 0.92rem; margin: 0 0 16px; }
.read-more { color: var(--blue-bright); font-weight: 600; font-size: 0.88rem; }

/* ---------- Post ---------- */
.post { padding: 16px 0 40px; }
.post-meta { color: var(--muted); font-size: 0.88rem; }
.post-meta time { color: var(--blue-bright); }
.post-title { margin: 10px 0 30px; font-size: clamp(1.9rem, 4.5vw, 2.9rem); text-transform: uppercase; font-weight: 700; letter-spacing: -0.02em; }
.post-hero { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block;
  border: 1px solid var(--border); border-radius: var(--radius); margin: 0 0 34px; }
.post-body { font-size: 1rem; }
.post-nav { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 48px; padding-top: 28px; border-top: 1px solid var(--border); }
.pn { flex: 1 1 240px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px; color: var(--text); font-weight: 600; font-size: 0.92rem; }
.pn:hover { text-decoration: none; border-color: var(--blue); }
.pn span { display: block; color: var(--muted); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 500; margin-bottom: 5px; }
.pn-prev { text-align: right; }

/* ---------- Contact form ---------- */
.contact-form { display: flex; flex-direction: column; gap: 16px; max-width: 620px; margin: 0 auto 18px; }
.contact-form label { display: flex; flex-direction: column; gap: 7px; font-family: var(--mono); font-weight: 600; font-size: 0.82rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.contact-form .field-row { display: flex; gap: 16px; }
.contact-form .field-row label { flex: 1; }
.contact-form input, .contact-form textarea {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); color: var(--text);
  padding: 13px 15px; font-family: var(--mono); font-size: 0.95rem; font-weight: 400; text-transform: none; letter-spacing: 0;
  transition: border-color 0.18s;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--blue); }
.contact-form .btn { align-self: flex-start; margin-top: 6px; }
.hp { position: absolute; left: -5000px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-alt); border-top: 1px solid var(--border); padding: 58px 0 28px; }
.footer-inner { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 32px; align-items: start; }
.footer-inner .muted { margin: 14px 0 0; max-width: 38ch; font-size: 0.9rem; }
.footer-nav { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a { color: var(--muted); font-size: 0.92rem; }
.footer-nav a:hover { color: var(--text); }
.footer-email { font-family: var(--mono); font-weight: 600; }
.footer-bottom { margin-top: 38px; padding-top: 20px; border-top: 1px solid var(--border); }
.footer-bottom .muted { font-size: 0.82rem; margin: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; gap: 32px; min-height: 0; }
  .hero { padding: 56px 0 72px; }
}
@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed; inset: 70px 0 auto 0; flex-direction: column; align-items: stretch;
    background: var(--bg-alt); border-bottom: 1px solid var(--border); padding: 18px 28px 26px;
    gap: 4px; transform: translateY(-130%); transition: transform 0.28s ease; box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  }
  .site-nav.open { transform: translateY(0); }
  .site-nav a { padding: 13px 4px; border-bottom: 1px solid var(--border); font-size: 1rem; }
  .site-nav a.active { border-bottom-color: var(--border); color: var(--blue-bright); }
  .site-nav .btn { margin-top: 12px; text-align: center; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .contact-form .field-row { flex-direction: column; }
}