:root {
  --background: 222 47% 7%;
  --foreground: 210 40% 98%;
  --primary: 158 88% 48%;
  --primary-foreground: 222 47% 7%;
  --secondary: 263 85% 66%;
  --secondary-foreground: 210 40% 98%;
  --muted: 222 25% 18%;
  --muted-foreground: 215 20% 72%;
  --destructive: 0 84% 60%;
  --destructive-foreground: 210 40% 98%;
  --border: 222 20% 25%;
  --card: 222 35% 11%;
  --shadow-sm: 0 8px 20px rgba(0,0,0,.22);
  --shadow-md: 0 18px 45px rgba(0,0,0,.32);
  --shadow-lg: 0 28px 80px rgba(20, 255, 173, .16);
  --transition-fast: 150ms ease;
  --transition-smooth: 280ms cubic-bezier(.2,.8,.2,1);
  --radius-sm: .65rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
}
.dark {
  --background: 222 47% 5%;
  --foreground: 210 40% 98%;
  --primary: 158 88% 52%;
  --secondary: 276 90% 70%;
  --muted: 222 28% 15%;
  --border: 222 18% 22%;
  --card: 222 38% 9%;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, hsla(var(--secondary), .22), transparent 32rem), radial-gradient(circle at top right, hsla(var(--primary), .18), transparent 28rem), hsl(var(--background));
  color: hsl(var(--foreground));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
.glass { background: hsla(var(--card), .78); border: 1px solid hsla(var(--border), .85); box-shadow: var(--shadow-md); backdrop-filter: blur(18px); }
.soft-card { background: linear-gradient(145deg, hsla(var(--card), .94), hsla(var(--muted), .54)); border: 1px solid hsla(var(--border), .9); box-shadow: var(--shadow-sm); }
.focus-ring:focus { outline: 2px solid hsl(var(--primary)); outline-offset: 2px; }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-thumb { background: hsla(var(--primary), .45); border-radius: 999px; }