:root{
  color-scheme: dark;

  /* Typography */
  --font: "Montserrat", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;

  /* Spacing */
  --container: 1100px;
  --r-sm: 14px;
  --r-md: 18px;
  --r-lg: 24px;

  /* Motion */
  --t-fast: 160ms;
  --t-med: 220ms;

  /* Dark tokens */
  --bg: #070A0F;
  --bg2: #0A0F1A;
  --text: #EAF0FF;
  --muted: rgba(234,240,255,.72);
  --faint: rgba(234,240,255,.55);

  --surface: rgba(255,255,255,.06);
  --surface2: rgba(255,255,255,.04);
  --border: rgba(255,255,255,.10);
  --border2: rgba(255,255,255,.16);

  --accent: #39E6D4;
  --accent2: #7C5CFF;

  --shadow: 0 14px 50px rgba(0,0,0,.55);
  --shadow2: 0 18px 70px rgba(0,0,0,.62);

  --focus: #39E6D4;
}

html[data-theme="light"]{
  color-scheme: light;

  --bg: #F7F8FC;
  --bg2: #FFFFFF;
  --text: #0C1220;
  --muted: rgba(12,18,32,.70);
  --faint: rgba(12,18,32,.55);

  --surface: rgba(255,255,255,.80);
  --surface2: rgba(255,255,255,.60);
  --border: rgba(12,18,32,.10);
  --border2: rgba(12,18,32,.16);

  --accent: #0BBDAE;
  --accent2: #5A3BFF;

  --shadow: 0 14px 50px rgba(12,18,32,.12);
  --shadow2: 0 18px 70px rgba(12,18,32,.14);

  --focus: #0BBDAE;
}

/* Minimal reset */
*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: var(--font);
  background: radial-gradient(1200px 900px at 20% 0%, rgba(57,230,212,.12), transparent 52%),
              radial-gradient(1000px 700px at 90% 20%, rgba(124,92,255,.10), transparent 55%),
              linear-gradient(180deg, var(--bg), var(--bg2));
  color: var(--text);
}

a{ color: inherit; text-decoration: none; }
p{ margin: 0 0 12px; line-height: 1.65; color: var(--muted); }
h1,h2,h3{ margin:0 0 10px; color: var(--text); letter-spacing:-.3px; }

:focus-visible{
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 10px;
}

.skip-link{
  position:absolute;
  left:-9999px;
  top:10px;
  padding:10px 12px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  z-index:999;
}
.skip-link:focus{ left: 12px; }

.container{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 18px;
}

.glass{
  background: var(--surface);
  border: 1px solid var(--border);
  backdrop-filter: blur(12px);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
}

/* Navbar */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.navbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 14px;
  padding: 14px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: .2px;
}
.brand-mark{
  width: 34px;
  height: 34px;
  border-radius: 14px;
  background: radial-gradient(circle at 30% 20%, rgba(57,230,212,.95), rgba(124,92,255,.25) 55%, rgba(255,255,255,.05) 100%);
  border: 1px solid var(--border);
}

.nav-links{
  display:flex;
  align-items:center;
  gap: 6px;
  flex-wrap: wrap;
  justify-content:flex-end;
}

.nav-links a{
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--muted);
  font-weight: 700;
  font-size: 13px;
  transition: transform var(--t-fast) ease, background var(--t-fast) ease, border-color var(--t-fast) ease, color var(--t-fast) ease;
}

.nav-links a:hover{
  color: var(--text);
  background: var(--surface2);
  border-color: var(--border);
}

.nav-links a[aria-current="page"]{
  color: var(--text);
  background: color-mix(in srgb, var(--accent) 14%, var(--surface));
  border-color: color-mix(in srgb, var(--accent) 38%, var(--border));
}

.nav-actions{
  display:flex;
  gap: 10px;
  align-items:center;
}

.button{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  font-weight: 800;
  font-size: 12px;
  cursor: pointer;
  transition: transform var(--t-fast) ease, background var(--t-fast) ease, border-color var(--t-fast) ease, box-shadow var(--t-fast) ease;
  min-height: 44px;
}
.button:hover{
  transform: translateY(-1px);
  background: var(--surface);
  border-color: var(--border2);
  box-shadow: var(--shadow);
}
.button.primary{
  background: color-mix(in srgb, var(--accent) 18%, var(--surface));
  border-color: color-mix(in srgb, var(--accent) 44%, var(--border));
}
.button.ghost{
  background: transparent;
}

/* Footer */
.site-footer{
  margin-top: 70px;
  padding: 22px 0;
  border-top: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 84%, transparent);
}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-links{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
}
.footer-links a{
  padding: 9px 11px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--muted);
  font-weight: 800;
  font-size: 12px;
}
.footer-links a:hover{ color: var(--text); border-color: var(--border2); background: var(--surface); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  *{ transition:none !important; scroll-behavior:auto !important; }
}