:root {
  --background: 210 40% 98%;
  --foreground: 222 47% 11%;
  --primary: 168 84% 34%;
  --primary-foreground: 0 0% 100%;
  --secondary: 246 83% 62%;
  --secondary-foreground: 0 0% 100%;
  --muted: 214 32% 91%;
  --muted-foreground: 215 16% 39%;
  --destructive: 0 75% 55%;
  --destructive-foreground: 0 0% 100%;
  --border: 214 32% 86%;
  --card: 0 0% 100%;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 12px 30px rgba(15, 23, 42, 0.12);
  --shadow-lg: 0 24px 70px rgba(15, 23, 42, 0.18);
  --transition-fast: 150ms ease;
  --transition-smooth: 260ms cubic-bezier(.2,.8,.2,1);
  --radius-sm: 0.65rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
}
.dark {
  --background: 222 47% 7%;
  --foreground: 210 40% 98%;
  --primary: 168 78% 46%;
  --primary-foreground: 222 47% 7%;
  --secondary: 250 95% 72%;
  --secondary-foreground: 222 47% 7%;
  --muted: 217 33% 17%;
  --muted-foreground: 215 20% 72%;
  --destructive: 0 72% 60%;
  --destructive-foreground: 0 0% 100%;
  --border: 217 33% 22%;
  --card: 222 47% 10%;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, a, input, textarea, select { transition: var(--transition-smooth); }
input, textarea, select { font-size: max(16px, 1rem); }
button, a[role="button"] { min-height: 44px; }
::selection { background: hsl(var(--primary) / 0.22); }
.safe-bottom { padding-bottom: calc(0.75rem + env(safe-area-inset-bottom)); }
.safe-top { padding-top: env(safe-area-inset-top); }
.glass {
  background: hsl(var(--card) / 0.78);
  backdrop-filter: blur(18px);
  border: 1px solid hsl(var(--border));
}
.gradient-orb {
  background: radial-gradient(circle at 30% 30%, hsl(var(--primary) / 0.42), transparent 34%), radial-gradient(circle at 70% 60%, hsl(var(--secondary) / 0.35), transparent 35%);
}