/* ===== Design tokens ===== */
:root {
  --bg: #0a0b0f;
  --fg: #e7e9ee;
  --muted: #9aa0b0;
  --grid: #1a1d27;
  --surface: #11131a;
  --accent: #3ddc97;
  --accent-ink: #062018;
  --maxw: 1080px;
  --radius: 10px;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ===== Base ===== */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.label {
  font-family: var(--mono); font-size: 12px; letter-spacing: 2px;
  text-transform: uppercase; color: var(--accent);
}
h1, h2, h3 { line-height: 1.12; letter-spacing: -0.02em; font-weight: 800; margin: 0 0 .4em; }
h1 { font-size: clamp(34px, 6vw, 60px); }
h2 { font-size: clamp(26px, 4vw, 38px); }
h3 { font-size: 20px; }
p { color: var(--muted); margin: 0 0 1em; }
.section { padding: 88px 0; border-top: 1px solid var(--grid); }

/* ===== Buttons ===== */
.btn {
  display: inline-block; font-weight: 700; font-size: 15px;
  padding: 12px 22px; border-radius: 8px; cursor: pointer; border: 1px solid transparent;
  transition: transform .15s ease, filter .15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; color: var(--fg); border-color: var(--grid); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ===== Header / nav ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,11,15,.8); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--grid);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 800; font-size: 18px; color: var(--fg); }
.brand:hover { text-decoration: none; }
.brand-mark { flex: none; }
.brand-line { display: inline-flex; align-items: center; gap: 7px; }
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a { color: var(--muted); font-size: 15px; }
.nav-links a:hover, .nav-links a.active { color: var(--fg); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 0; color: var(--fg); font-size: 24px; cursor: pointer; }

/* ===== Hero ===== */
.hero { position: relative; padding: 110px 0 96px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 40px 40px;
  -webkit-mask-image: radial-gradient(120% 80% at 30% 0%, #000 30%, transparent 75%);
          mask-image: radial-gradient(120% 80% at 30% 0%, #000 30%, transparent 75%);
  opacity: .6;
}
.hero .container { position: relative; z-index: 1; max-width: 760px; }
.hero p.lead { font-size: 19px; color: var(--muted); max-width: 560px; }
.hero .cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 26px; }

/* ===== Grids / cards ===== */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--grid);
  border-radius: var(--radius); padding: 26px;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card h3 { color: var(--fg); }
.card .label { display: block; margin-bottom: 10px; }

/* ===== CTA band ===== */
.cta-band { text-align: center; }
.cta-band h2 { margin-bottom: 18px; }

/* ===== Contact form ===== */
.form { max-width: 560px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-family: var(--mono); font-size: 12px; letter-spacing: 1px; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.field input, .field textarea {
  width: 100%; background: var(--surface); border: 1px solid var(--grid);
  border-radius: 8px; color: var(--fg); font: inherit; padding: 12px 14px;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.field textarea { min-height: 140px; resize: vertical; }
.hp { position: absolute; left: -9999px; } /* honeypot, hidden */

/* ===== Footer ===== */
.site-footer { border-top: 1px solid var(--grid); padding: 40px 0; color: var(--muted); }
.site-footer .row { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--accent); }

/* ===== Scroll reveal ===== */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 860px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .nav-links {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    flex-direction: column; gap: 0; background: var(--bg); border-bottom: 1px solid var(--grid);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 24px; width: 100%; border-top: 1px solid var(--grid); }
  .nav-toggle { display: block; }
}

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