:root {
  --accent: #34d399; --purple: #a78bfa; --blue: #60a5fa;
  --amber: #fbbf24; --pink: #f472b6; --red: #f87171;
  --bg: #0a0e1a; --surface: rgba(255,255,255,0.04);
  --surface-2: rgba(255,255,255,0.07); --border: rgba(255,255,255,0.09);
  --border-strong: rgba(255,255,255,0.16);
  --text: #e7ecf3; --muted: #8b95a7;
  --grid-line: rgba(255,255,255,0.028);
}
[data-theme="light"] {
  --bg: #f2f4f9; --surface: #ffffff;
  --surface-2: rgba(10,14,26,0.05); --border: rgba(10,14,26,0.1);
  --border-strong: rgba(10,14,26,0.22);
  --text: #10182b; --muted: #5b6577;
  --grid-line: rgba(10,14,26,0.045);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.55;
  transition: background .35s, color .35s;
}
.mono { font-family: 'JetBrains Mono', monospace; }

/* фон: міліметровка + сяйво (елемент .glow вже є на всіх сторінках) */
.glow { position: fixed; inset: 0; z-index: -1; pointer-events: none; }
.glow::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
}
.glow::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(820px 460px at 12% -6%, rgba(52,211,153,0.12), transparent 62%),
    radial-gradient(700px 420px at 92% 4%, rgba(96,165,250,0.08), transparent 62%);
}

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

header {
  position: sticky; top: 0; z-index: 1000;
  backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 58px; padding: 0; }
.logo {
  font-family: 'JetBrains Mono', monospace; font-weight: 700; font-size: 1rem;
  text-decoration: none; color: var(--text);
  display: inline-flex; align-items: center; gap: 10px; letter-spacing: -.02em;
}
.logo b { color: var(--accent); }
.logo::before { content: ""; width: 24px; height: 24px; flex-shrink: 0; background: url('/assets/favicon.svg') center/contain no-repeat; }
.nav-right { display: flex; align-items: center; gap: 4px; }
.nav a.link {
  color: var(--muted); text-decoration: none; font-size: .84rem; font-weight: 500;
  padding: 7px 12px; border-radius: 8px; transition: color .15s, background .15s;
}
.nav a.link:hover { color: var(--text); background: var(--surface-2); }
#themeToggle {
  border: 1px solid var(--border); background: transparent; color: var(--muted);
  border-radius: 8px; padding: 7px 12px; margin-left: 8px;
  cursor: pointer; font-size: .78rem; font-family: 'JetBrains Mono', monospace;
}
#themeToggle:hover { color: var(--text); border-color: var(--border-strong); }

.page-head { padding: 52px 0 26px; }
.page-head .kicker {
  font-family: 'JetBrains Mono', monospace; font-size: .72rem; color: var(--accent);
  text-transform: uppercase; letter-spacing: .14em;
  display: inline-flex; align-items: center; gap: 9px;
}
.page-head .kicker::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.page-head h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); font-weight: 900; letter-spacing: -.03em; line-height: 1.04; margin-top: 12px; text-wrap: balance; }
.page-head p { color: var(--muted); margin-top: 12px; max-width: 680px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 10px; margin: 22px 0; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px; }
.stat .num {
  font-family: 'JetBrains Mono', monospace; font-size: 1.65rem; font-weight: 800;
  color: var(--accent); letter-spacing: -.02em; font-variant-numeric: tabular-nums;
}
.stat .lbl { font-size: .78rem; color: var(--muted); margin-top: 3px; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 22px; }

footer { border-top: 1px solid var(--border); padding: 32px 0 44px; margin-top: 60px; }
footer p { color: var(--muted); font-size: .82rem; }
footer a { color: var(--blue); text-decoration: none; }

@media (max-width: 640px) { .nav a.link { display: none; } .page-head { padding: 36px 0 20px; } }