:root {
  --background: 222 47% 97%;
  --foreground: 224 38% 12%;
  --primary: 244 74% 58%;
  --primary-foreground: 0 0% 100%;
  --secondary: 174 74% 42%;
  --secondary-foreground: 0 0% 100%;
  --muted: 222 20% 92%;
  --muted-foreground: 224 14% 42%;
  --destructive: 348 84% 56%;
  --destructive-foreground: 0 0% 100%;
  --border: 222 22% 84%;
  --card: 0 0% 100%;
  --warning: 37 92% 54%;
  --success: 148 62% 40%;
  --shadow-sm: 0 8px 22px rgba(25, 31, 62, 0.08);
  --shadow-md: 0 16px 40px rgba(25, 31, 62, 0.12);
  --shadow-lg: 0 28px 70px rgba(25, 31, 62, 0.18);
  --transition-fast: 150ms ease;
  --transition-smooth: 260ms cubic-bezier(.2,.8,.2,1);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
}
.dark {
  --background: 224 34% 8%;
  --foreground: 220 32% 96%;
  --primary: 246 92% 72%;
  --primary-foreground: 224 34% 8%;
  --secondary: 174 70% 50%;
  --secondary-foreground: 224 34% 8%;
  --muted: 224 22% 16%;
  --muted-foreground: 220 16% 72%;
  --destructive: 348 84% 62%;
  --destructive-foreground: 0 0% 100%;
  --border: 224 22% 22%;
  --card: 224 30% 12%;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: hsl(var(--foreground));
  background:
    radial-gradient(circle at top left, hsl(var(--primary) / .16), transparent 34rem),
    radial-gradient(circle at bottom right, hsl(var(--secondary) / .14), transparent 30rem),
    hsl(var(--background));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid hsl(var(--primary) / .35); outline-offset: 2px; }
.glass { background: hsl(var(--card) / .82); backdrop-filter: blur(18px); }
.card-hover { transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-fast); }
.card-hover:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: hsl(var(--primary) / .34); }
.gradient-panel { background: linear-gradient(135deg, hsl(var(--primary)), hsl(var(--secondary))); }
.video-shell { aspect-ratio: 16 / 9; background: linear-gradient(135deg, hsl(var(--foreground)), hsl(var(--primary))); }
.skeleton { background: linear-gradient(90deg, hsl(var(--muted)), hsl(var(--border)), hsl(var(--muted))); background-size: 200% 100%; animation: shimmer 1.2s infinite; }
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }