:root {
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --background: 210 40% 98%;
  --foreground: 222 47% 11%;
  --card: 0 0% 100%;
  --card-foreground: 222 47% 11%;
  --popover: 0 0% 100%;
  --popover-foreground: 222 47% 11%;
  --primary: 217 91% 48%;
  --primary-foreground: 210 40% 98%;
  --secondary: 214 32% 91%;
  --secondary-foreground: 222 47% 11%;
  --muted: 214 32% 91%;
  --muted-foreground: 215 16% 39%;
  --accent: 213 94% 94%;
  --accent-foreground: 217 91% 30%;
  --destructive: 0 72% 45%;
  --destructive-foreground: 210 40% 98%;
  --success: 160 84% 32%;
  --success-foreground: 155 100% 97%;
  --warning: 38 92% 45%;
  --warning-foreground: 48 96% 96%;
  --info: 199 89% 42%;
  --info-foreground: 204 100% 97%;
  --rose: 335 84% 57%;
  --violet: 262 83% 58%;
  --teal: 173 80% 40%;
  --amber: 38 92% 50%;
  --border: 214 32% 86%;
  --input: 214 32% 86%;
  --ring: 217 91% 48%;
  --radius: 0.625rem;
  --shadow-sm: 0 1px 2px hsl(var(--foreground) / 0.05);
  --shadow-md: 0 4px 12px hsl(var(--foreground) / 0.08);
  --shadow-lg: 0 12px 32px hsl(var(--foreground) / 0.12);
  --shadow-elegant: 0 20px 60px hsl(var(--primary) / 0.18);
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

.dark {
  --background: 222 47% 7%;
  --foreground: 210 40% 96%;
  --card: 222 47% 10%;
  --card-foreground: 210 40% 96%;
  --popover: 222 47% 10%;
  --popover-foreground: 210 40% 96%;
  --primary: 213 94% 68%;
  --primary-foreground: 222 47% 9%;
  --secondary: 217 33% 17%;
  --secondary-foreground: 210 40% 96%;
  --muted: 217 33% 17%;
  --muted-foreground: 215 20% 72%;
  --accent: 217 33% 18%;
  --accent-foreground: 213 94% 78%;
  --destructive: 0 72% 58%;
  --destructive-foreground: 210 40% 98%;
  --success: 160 84% 42%;
  --success-foreground: 155 100% 97%;
  --warning: 38 92% 55%;
  --warning-foreground: 222 47% 9%;
  --info: 199 89% 58%;
  --info-foreground: 222 47% 9%;
  --rose: 335 90% 68%;
  --violet: 262 92% 72%;
  --teal: 173 84% 52%;
  --amber: 38 96% 60%;
  --border: 217 33% 22%;
  --input: 217 33% 22%;
  --ring: 213 94% 68%;
}

* {
  box-sizing: border-box;
  --tw-ring-offset-color: hsl(var(--background));
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at top left, hsl(var(--primary) / 0.08), transparent 26rem),
    radial-gradient(circle at top right, hsl(var(--rose) / 0.08), transparent 24rem),
    hsl(var(--background));
  color: hsl(var(--foreground));
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

button,
a,
input,
textarea,
select {
  font: inherit;
}

input,
textarea,
select {
  font-size: max(16px, 1rem);
}

.safe-top {
  padding-top: env(safe-area-inset-top);
}

.safe-bottom {
  padding-bottom: env(safe-area-inset-bottom);
}

.hero-surface {
  background:
    radial-gradient(circle at 16% 18%, hsl(var(--primary) / 0.22), transparent 32%),
    radial-gradient(circle at 82% 14%, hsl(var(--rose) / 0.16), transparent 28%),
    radial-gradient(circle at 78% 84%, hsl(var(--amber) / 0.18), transparent 30%),
    linear-gradient(135deg, hsl(var(--card)), hsl(var(--accent) / 0.54));
}

.color-wash {
  background:
    radial-gradient(circle at 8% 18%, hsl(var(--primary) / 0.10), transparent 24rem),
    radial-gradient(circle at 92% 12%, hsl(var(--rose) / 0.09), transparent 22rem),
    radial-gradient(circle at 50% 100%, hsl(var(--teal) / 0.08), transparent 24rem),
    hsl(var(--background));
}

.color-band {
  background:
    radial-gradient(circle at 15% 20%, hsl(var(--info) / 0.14), transparent 24rem),
    radial-gradient(circle at 85% 80%, hsl(var(--violet) / 0.11), transparent 24rem),
    linear-gradient(135deg, hsl(var(--card)), hsl(var(--accent) / 0.44));
}

.color-band-reverse {
  background:
    radial-gradient(circle at 85% 18%, hsl(var(--rose) / 0.12), transparent 22rem),
    radial-gradient(circle at 16% 82%, hsl(var(--amber) / 0.12), transparent 24rem),
    linear-gradient(135deg, hsl(var(--accent) / 0.5), hsl(var(--card)));
}

.colorful-card {
  position: relative;
  overflow: hidden;
}

.colorful-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, hsl(var(--primary)), hsl(var(--rose)), hsl(var(--amber)), hsl(var(--teal)));
}

.subtle-grid {
  background-image:
    linear-gradient(hsl(var(--border) / 0.45) 1px, transparent 1px),
    linear-gradient(90deg, hsl(var(--border) / 0.45) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}

::selection {
  background: hsl(var(--primary) / 0.22);
}