/* ============================================================
   CrossTech — crosstech.solutions
   Dark, modern, zero-build stylesheet. No frameworks.
   Design tokens up top; everything derives from them.
   ============================================================ */

/* ---- Self-hosted fonts (SIL OFL 1.1, see /fonts/) — no requests to Google Fonts ---- */
@font-face { font-family: "Inter"; font-style: normal; font-weight: 400; font-display: swap; src: url("/fonts/inter-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 500; font-display: swap; src: url("/fonts/inter-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 600; font-display: swap; src: url("/fonts/inter-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Space Grotesk"; font-style: normal; font-weight: 500; font-display: swap; src: url("/fonts/space-grotesk-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Space Grotesk"; font-style: normal; font-weight: 700; font-display: swap; src: url("/fonts/space-grotesk-latin-700-normal.woff2") format("woff2"); }

:root {
  --bg: #081119;
  --bg-soft: #0b1722;
  --card: #101d2a;
  --card-border: rgba(146, 181, 204, 0.15);
  --text: #e8ecf4;
  --muted: #97a8ba;
  --faint: #5c7186;
  --accent: #38a9dc;        /* logo blue */
  --accent-2: #f0632c;      /* logo red-orange */
  --accent-3: #f2a33a;      /* logo amber, sparse use */
  --gradient: linear-gradient(100deg, var(--accent-3), var(--accent-2));
  --radius: 14px;
  --radius-lg: 22px;
  --header-h: 72px;
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --maxw: 1120px;
  color-scheme: dark;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

::selection { background: rgba(56, 169, 220, 0.3); }

.container {
  width: min(var(--maxw), 92vw);
  margin-inline: auto;
}

/* ---------- Typography ---------- */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.12;
  letter-spacing: -0.015em;
  font-weight: 700;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.9rem;
}

.section-title {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  margin-bottom: 0.8rem;
}

.section-lead {
  color: var(--muted);
  max-width: 44rem;
  margin-bottom: 2.6rem;
}

.grad-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  display: flex;
  align-items: center;
  transition: background 0.3s, border-color 0.3s;
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(10, 14, 23, 0.82);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--card-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--text);
  letter-spacing: -0.02em;
}
.logo:hover { text-decoration: none; }
.logo .dot { color: var(--accent); }

.main-nav { display: flex; align-items: center; gap: 1.9rem; }

.main-nav a {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 500;
}
.main-nav a:hover { color: var(--text); text-decoration: none; }
.main-nav a[aria-current="page"] { color: var(--text); }

.btn {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: var(--gradient);
  color: #071018;
  box-shadow: 0 4px 24px rgba(240, 99, 44, 0.25);
}
.btn-primary:hover { box-shadow: 0 6px 32px rgba(242, 163, 58, 0.35); color: #071018; }

.btn-ghost {
  color: var(--text);
  border-color: var(--card-border);
  background: rgba(146, 181, 204, 0.06);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--text); }

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  color: var(--text);
  font-size: 1.6rem;
  cursor: pointer;
  line-height: 1;
}

@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    flex-direction: column;
    align-items: flex-end;
    gap: 1.2rem;
    background: rgba(13, 18, 30, 0.97);
    border: 1px solid var(--card-border);
    border-right: 0;
    border-radius: var(--radius) 0 0 var(--radius);
    padding: 1.6rem 2rem;
    transform: translateX(110%);
    transition: transform 0.25s ease;
  }
  .main-nav.open { transform: translateX(0); }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(42rem 30rem at 82% 8%, rgba(240, 99, 44, 0.14), transparent 60%),
    radial-gradient(38rem 28rem at 12% 88%, rgba(56, 169, 220, 0.13), transparent 60%),
    var(--bg);
}

.hero-bg::after {
  /* faint grid */
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(146, 181, 204, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(146, 181, 204, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(60rem 40rem at 50% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(60rem 40rem at 50% 30%, #000 30%, transparent 75%);
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  max-width: 17ch;
  margin-bottom: 1.3rem;
}

.hero .tagline {
  color: var(--muted);
  font-size: clamp(1.02rem, 1.6vw, 1.2rem);
  max-width: 40rem;
  margin-bottom: 2.2rem;
}

.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 3rem;
}

.chip {
  font-size: 0.8rem;
  color: var(--muted);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  background: rgba(146, 181, 204, 0.05);
}

/* ---------- Sections ---------- */

.section { padding: 5.5rem 0; }
.section.alt { background: var(--bg-soft); }

/* Cards / grids */

.grid {
  display: grid;
  gap: 1.3rem;
}
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 900px) {
  .grid.cols-3 { grid-template-columns: 1fr; }
  .grid.cols-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 1.7rem;
  transition: border-color 0.25s, transform 0.25s;
}
.card:hover { border-color: rgba(56, 169, 220, 0.45); transform: translateY(-3px); }

.card .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(56,169,220,0.16), rgba(240,99,44,0.16));
  border: 1px solid var(--card-border);
  margin-bottom: 1.1rem;
  font-size: 1.25rem;
}

.card h3 { font-size: 1.15rem; margin-bottom: 0.55rem; }
.card p { color: var(--muted); font-size: 0.97rem; }

.card.featured {
  border-color: rgba(56, 169, 220, 0.5);
  background:
    linear-gradient(160deg, rgba(56,169,220,0.07), rgba(240,99,44,0.06)),
    var(--card);
}

.card ul {
  margin-top: 0.8rem;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.94rem;
}
.card ul li { margin-bottom: 0.3rem; }

/* Process / steps */

.steps { counter-reset: step; }
.step { position: relative; padding-left: 3.4rem; margin-bottom: 2rem; }
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--accent);
  opacity: 0.85;
}
.step h3 { font-size: 1.1rem; margin-bottom: 0.35rem; }
.step p { color: var(--muted); font-size: 0.97rem; max-width: 46rem; }

/* Stats */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.3rem;
  text-align: center;
}
@media (max-width: 760px) { .stats { grid-template-columns: repeat(2, 1fr); } }

.stat b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat span { color: var(--muted); font-size: 0.92rem; }

/* CTA band */

.cta-band {
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 3.2rem 2.4rem;
  text-align: center;
  background:
    radial-gradient(30rem 16rem at 50% -20%, rgba(240, 99, 44, 0.16), transparent 70%),
    var(--card);
}
.cta-band h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 0.7rem; }
.cta-band p { color: var(--muted); margin-bottom: 1.8rem; }

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 2.5rem;
  align-items: start;
}
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-info p { color: var(--muted); margin-bottom: 1.2rem; }
.contact-info .line { color: var(--text); margin-bottom: 0.4rem; }

form.contact-form { display: grid; gap: 1rem; }
.form-privacy { color: var(--faint); font-size: 0.84rem; line-height: 1.5; margin: -0.2rem 0 0; }
.form-privacy a { color: var(--muted); }

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 640px) { .field-row { grid-template-columns: 1fr; } }

.contact-form input,
.contact-form textarea {
  width: 100%;
  background: rgba(146, 181, 204, 0.06);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  color: var(--text);
  padding: 0.85rem 1rem;
  font: inherit;
  font-size: 0.97rem;
  transition: border-color 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.contact-form ::placeholder { color: var(--faint); }

.validation {
  color: #f87171;
  font-size: 0.82rem;
  min-height: 1rem;
  margin-top: 0.25rem;
}

.form-status { display: none; border-radius: var(--radius); padding: 1.2rem 1.4rem; margin-bottom: 1rem; }
.form-status.ok { background: rgba(56, 169, 220, 0.12); border: 1px solid rgba(56, 169, 220, 0.45); }
.form-status.err { background: rgba(248, 113, 113, 0.08); border: 1px solid rgba(248, 113, 113, 0.4); }
.form-status.visible { display: block; }

/* ---------- Legal / prose pages ---------- */

.prose { max-width: 46rem; }
.prose h2 { font-size: 1.25rem; margin: 2.2rem 0 0.7rem; }
.prose p, .prose li { color: var(--muted); }
.prose ul { padding-left: 1.3rem; margin-top: 0.5rem; }
.prose .meta { color: var(--faint); font-size: 0.92rem; }

.page-head { padding: calc(var(--header-h) + 4rem) 0 3rem; }
.page-head h1 { font-size: clamp(2rem, 4.5vw, 3rem); margin-bottom: 0.8rem; }
.page-head p { color: var(--muted); max-width: 44rem; }

/* ---------- Legal pages (privacy / terms) ---------- */

.prose.legal { max-width: 50rem; }
.prose h3 { font-size: 1.02rem; margin: 1.5rem 0 0.45rem; color: var(--text); }
.prose p + p { margin-top: 0.7rem; }
.prose ul, .prose ol { margin-bottom: 0.6rem; }
.prose ol { padding-left: 1.3rem; margin-top: 0.5rem; }
.prose li { margin-bottom: 0.3rem; }
.prose a { color: var(--accent); }
.legal-summary {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.3rem 1.5rem;
  margin: 0 0 1.6rem;
}
.legal-summary h2 { margin: 0 0 0.6rem; font-size: 1.05rem; }
.legal-summary ul { margin: 0; }
.legal-summary li { color: var(--text); }
.legal-toc {
  columns: 2;
  column-gap: 2rem;
  font-size: 0.92rem;
  margin: 0 0 1rem;
  padding-left: 1.2rem;
}
@media (max-width: 640px) { .legal-toc { columns: 1; } }
.legal-toc li { break-inside: avoid; }
.table-wrap { overflow-x: auto; margin: 0.8rem 0 1.2rem; border: 1px solid var(--card-border); border-radius: var(--radius); }
.prose table { width: 100%; border-collapse: collapse; font-size: 0.9rem; min-width: 640px; }
.prose th, .prose td { text-align: left; vertical-align: top; padding: 0.7rem 0.85rem; border-bottom: 1px solid var(--card-border); color: var(--muted); }
.prose th { color: var(--text); font-weight: 600; background: var(--bg-soft); white-space: nowrap; }
.prose tr:last-child td { border-bottom: 0; }
.prose td strong { color: var(--text); }
.legal-note { color: var(--faint); font-size: 0.88rem; border-top: 1px solid var(--card-border); padding-top: 1rem; margin-top: 2.4rem; }

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--card-border);
  padding: 3.4rem 0 2.2rem;
  background: var(--bg-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2.4rem;
}
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; } }

.site-footer h4 { font-size: 0.95rem; margin-bottom: 0.9rem; }
.site-footer p, .site-footer a { color: var(--muted); font-size: 0.94rem; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 0.45rem; }
.site-footer a:hover { color: var(--text); text-decoration: none; }

.footer-bottom {
  border-top: 1px solid var(--card-border);
  padding-top: 1.6rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
  color: var(--faint);
  font-size: 0.86rem;
}

/* ---------- 404 ---------- */

.notfound {
  min-height: 100vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 2rem;
}
.notfound .code {
  font-family: var(--font-display);
  font-size: clamp(5rem, 18vw, 10rem);
  font-weight: 700;
  line-height: 1;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.notfound p { color: var(--muted); margin: 1rem 0 2rem; }

/* ---------- Reveal on scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card { transition: none; }
}

/* Header CTA: keep dark button text despite .main-nav a color rules */
.main-nav a.btn-primary,
.main-nav a.btn-primary:hover { color: #071018; }


/* FAQ */

.faq { max-width: 780px; }
.faq details {
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  background: var(--card);
  margin-bottom: 0.7rem;
  padding: 0;
}
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 1rem 1.2rem;
  font-weight: 600;
  color: var(--text);
  position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 1.2rem;
  color: var(--accent);
  transition: transform 0.2s ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p {
  padding: 0 1.2rem 1.1rem;
  color: var(--muted);
  font-size: 0.96rem;
}