/* ===== base.css — shared design tokens, reset, nav, footer, buttons ===== */

:root {
  --bg: #06070e;
  --surface: #0c0e1a;
  --surface2: #111428;
  --fg: #e0e7f1;
  --fg2: #a8b4c4;
  --muted: #6b7a8d;
  --border: rgba(255, 255, 255, 0.07);
  --border-focus: rgba(0, 212, 255, 0.45);
  --cyan: #00d4ff;
  --purple: #8b5cf6;
  --pink: #ec4899;
  --green: #10b981;
  --amber: #f59e0b;
  --red: #ef4444;
  --glow-c: 0 0 40px rgba(0, 212, 255, 0.22), 0 0 80px rgba(0, 212, 255, 0.07);
  --r: 16px;
  --r-sm: 10px;
  --font-d: 'Space Grotesk', system-ui, sans-serif;
  --font-b: 'Inter', system-ui, -apple-system, sans-serif;
  --font-m: 'JetBrains Mono', ui-monospace, monospace;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font: 400 16px/1.7 var(--font-b);
  background: var(--bg);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: var(--cyan);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
a:hover { color: #fff; }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection {
  background: rgba(0, 212, 255, 0.2);
  color: #fff;
}

/* ===== Navigation ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(6, 7, 14, 0.82);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  height: 64px;
  display: flex;
  align-items: center;
  padding: 0 32px;
  transition: background 0.4s;
}
.nav.scrolled {
  background: rgba(6, 7, 14, 0.96);
  border-bottom-color: rgba(255, 255, 255, 0.1);
}
.nav-inner {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font: 700 19px/1 var(--font-d);
  color: #fff;
  letter-spacing: -0.02em;
  text-decoration: none;
  cursor: pointer;
}
.nav-brand:hover { color: #fff; }
.nav-brand img { height: 32px; width: auto; }
.nav-links {
  display: flex;
  gap: 2px;
  align-items: center;
}
.nav-links a {
  padding: 8px 14px;
  border-radius: 8px;
  font: 500 14px/1 var(--font-b);
  color: var(--muted);
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}
.nav-links a:hover { color: #fff; background: rgba(255, 255, 255, 0.05); }
.nav-links a.active { color: var(--cyan); }
.nav-right { display: flex; gap: 12px; align-items: center; }
.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 22px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #fff;
  font: 600 13px/1 var(--font-b);
  text-decoration: none;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--glow-c);
  color: #fff;
}
.nav-cta:active { transform: translateY(0); }
.burger {
  display: none;
  background: none;
  border: 0;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
}

/* ===== Shared layout helpers ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}
.section { padding: 100px 0; }
.label {
  font: 600 12px/1 var(--font-m);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 18px;
}
.stitle {
  font: 700 clamp(28px, 3.5vw, 42px)/1.15 var(--font-d);
  letter-spacing: -0.025em;
  color: #fff;
  margin-bottom: 16px;
  max-width: 640px;
}
.sdesc {
  font-size: 17px;
  line-height: 1.8;
  color: var(--fg2);
  max-width: 580px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--r-sm);
  font: 600 14px/1 var(--font-b);
  border: 0;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s;
  -webkit-user-select: none;
  user-select: none;
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #fff;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-c);
  color: #fff;
}
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-ghost {
  background: rgba(255, 255, 255, 0.04);
  color: var(--fg);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
  color: #fff;
}

/* ===== CTA block ===== */
.cta-block { text-align: center; padding: 100px 0; }
.cta-box {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(139, 92, 246, 0.05));
  border: 1px solid rgba(0, 212, 255, 0.12);
  border-radius: 24px;
  padding: 64px 48px;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--purple), transparent);
}
.cta-box h2 {
  font: 700 clamp(22px, 3vw, 34px)/1.2 var(--font-d);
  color: #fff;
  margin-bottom: 16px;
}
.cta-box p {
  font-size: 17px;
  color: var(--fg2);
  margin-bottom: 36px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* ===== Footer ===== */
.footer { border-top: 1px solid var(--border); padding: 40px 0; }
.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--muted);
  flex-wrap: wrap;
  gap: 16px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 600;
  font-family: var(--font-d);
}
.footer-links { display: flex; gap: 20px; }
.footer-links a { color: var(--muted); transition: color 0.2s; }
.footer-links a:hover { color: var(--cyan); }

/* ===== Responsive base (mobile nav) ===== */
@media (max-width: 640px) {
  .nav-links, .nav-right .nav-cta { display: none; }
  .burger { display: block; }
  .nav-links.mob-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: rgba(6, 7, 14, 0.98);
    padding: 16px;
    border-bottom: 1px solid var(--border);
    gap: 2px;
  }
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}