:root {
  --background: 220 38% 97%;
  --foreground: 230 35% 12%;
  --primary: 262 85% 56%;
  --primary-foreground: 0 0% 100%;
  --secondary: 178 70% 42%;
  --secondary-foreground: 220 35% 8%;
  --muted: 224 22% 90%;
  --muted-foreground: 226 14% 42%;
  --destructive: 354 79% 56%;
  --destructive-foreground: 0 0% 100%;
  --border: 224 20% 84%;
  --card: 0 0% 100%;
  --card-foreground: 230 35% 12%;
  --shadow-sm: 0 6px 16px hsl(230 45% 18% / 0.08);
  --shadow-md: 0 14px 35px hsl(230 45% 18% / 0.12);
  --shadow-lg: 0 24px 70px hsl(230 45% 18% / 0.18);
  --transition-fast: 160ms ease;
  --transition-smooth: 260ms cubic-bezier(.2,.8,.2,1);
  --radius-sm: 0.75rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
}

.dark {
  --background: 230 35% 8%;
  --foreground: 220 35% 96%;
  --primary: 264 95% 70%;
  --primary-foreground: 230 35% 8%;
  --secondary: 178 75% 48%;
  --secondary-foreground: 230 35% 8%;
  --muted: 229 24% 17%;
  --muted-foreground: 224 18% 74%;
  --destructive: 354 85% 64%;
  --destructive-foreground: 230 35% 8%;
  --border: 228 22% 24%;
  --card: 229 31% 12%;
  --card-foreground: 220 35% 96%;
  --shadow-sm: 0 6px 16px hsl(0 0% 0% / 0.18);
  --shadow-md: 0 14px 35px hsl(0 0% 0% / 0.26);
  --shadow-lg: 0 24px 70px hsl(0 0% 0% / 0.36);
}

* { box-sizing: border-box; }
html { min-height: 100%; background: hsl(var(--background)); }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, hsl(var(--primary) / 0.16), transparent 30rem),
    radial-gradient(circle at 80% 10%, hsl(var(--secondary) / 0.18), transparent 28rem),
    hsl(var(--background));
  color: hsl(var(--foreground));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, a, input { transition: var(--transition-smooth); }
input, textarea, select { font-size: max(16px, 1rem); }
button:focus-visible, a:focus-visible, input:focus-visible {
  outline: 3px solid hsl(var(--primary) / 0.38);
  outline-offset: 3px;
}
.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));
  box-shadow: var(--shadow-sm);
}
.gradient-text {
  background: linear-gradient(135deg, hsl(var(--primary)), hsl(var(--secondary)));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}