:root {
  --background: 222 47% 97%;
  --foreground: 230 28% 16%;
  --primary: 262 83% 58%;
  --secondary: 190 85% 44%;
  --muted: 220 24% 92%;
  --destructive: 0 78% 57%;
  --border: 225 21% 84%;
  --card: 0 0% 100%;
  --shadow-sm: 0 8px 20px hsla(262, 70%, 40%, 0.08);
  --shadow-md: 0 18px 40px hsla(230, 40%, 20%, 0.12);
  --shadow-lg: 0 28px 60px hsla(262, 65%, 40%, 0.18);
  --transition-fast: 180ms ease;
  --transition-smooth: 320ms cubic-bezier(0.2, 0.8, 0.2, 1);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
}

.dark {
  --background: 230 24% 10%;
  --foreground: 220 33% 96%;
  --primary: 267 87% 67%;
  --secondary: 187 86% 58%;
  --muted: 228 20% 18%;
  --destructive: 0 80% 65%;
  --border: 228 14% 25%;
  --card: 228 18% 13%;
  --shadow-sm: 0 10px 24px hsla(0, 0%, 0%, 0.24);
  --shadow-md: 0 22px 48px hsla(0, 0%, 0%, 0.34);
  --shadow-lg: 0 30px 70px hsla(0, 0%, 0%, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, hsla(262, 90%, 60%, 0.16), transparent 30%),
    radial-gradient(circle at top right, hsla(190, 90%, 50%, 0.12), transparent 28%),
    hsl(var(--background));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.card-surface {
  background: hsl(var(--card));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.card-surface:hover {
  box-shadow: var(--shadow-md);
}

.frosted {
  background: linear-gradient(135deg, hsla(0, 0%, 100%, 0.88), hsla(0, 0%, 100%, 0.72));
  backdrop-filter: blur(14px);
}

.dark .frosted {
  background: linear-gradient(135deg, hsla(230, 15%, 16%, 0.9), hsla(230, 14%, 12%, 0.76));
}

.gradient-ring {
  position: relative;
}

.gradient-ring::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, hsla(262, 90%, 60%, 0.45), hsla(190, 90%, 50%, 0.28));
  z-index: -1;
}

.code-area {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.token-chip {
  border-radius: 999px;
  border: 1px solid hsl(var(--border));
  background: hsla(255, 255%, 255%, 0.6);
}

.dark .token-chip {
  background: hsla(230, 18%, 18%, 0.9);
}

.progress-bar {
  height: 10px;
  border-radius: 999px;
  background: hsl(var(--muted));
  overflow: hidden;
}

.progress-bar > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, hsl(var(--primary)), hsl(var(--secondary)));
  transition: width var(--transition-smooth);
}

.animate-float {
  animation: floaty 5s ease-in-out infinite;
}

@keyframes floaty {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-5px); }
}

.skeleton {
  background: linear-gradient(90deg, hsla(220, 18%, 86%, 0.6), hsla(220, 18%, 92%, 0.9), hsla(220, 18%, 86%, 0.6));
  background-size: 200% 100%;
  animation: shimmer 1.4s linear infinite;
}

.dark .skeleton {
  background: linear-gradient(90deg, hsla(228, 16%, 20%, 0.8), hsla(228, 16%, 28%, 1), hsla(228, 16%, 20%, 0.8));
  background-size: 200% 100%;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

textarea:focus,
select:focus,
input:focus,
button:focus {
  outline: none;
}