:root {
  --background: 0 0% 100%;
  --foreground: 240 10% 3.9%;
  --card: 0 0% 100%;
  --card-foreground: 240 10% 3.9%;
  --popover: 0 0% 100%;
  --popover-foreground: 240 10% 3.9%;
  --primary: 240 5.9% 10%;
  --primary-foreground: 0 0% 98%;
  --secondary: 240 4.8% 95.9%;
  --secondary-foreground: 240 5.9% 10%;
  --muted: 240 4.8% 95.9%;
  --muted-foreground: 240 3.8% 46.1%;
  --accent: 240 4.8% 95.9%;
  --accent-foreground: 240 5.9% 10%;
  --destructive: 0 84.2% 60.2%;
  --destructive-foreground: 0 0% 98%;
  --border: 240 5.9% 90%;
  --input: 240 5.9% 90%;
  --ring: 240 5.9% 10%;
  --radius: 0.5rem;
  --sidebar-width: 16rem;
  --sidebar-bg: 240 5.9% 10%;
  --sidebar-fg: 240 4.8% 95.9%;
  --sidebar-muted: 240 3.8% 46.1%;
  --sidebar-accent: 240 3.7% 15.9%;
  --sidebar-accent-fg: 0 0% 98%;
  --success: 142 76% 36%;
  --warning: 38 92% 50%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  line-height: 1.5;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

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

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.025em;
}

h1 { font-size: 1.875rem; line-height: 2.25rem; }
h2 { font-size: 1.5rem; line-height: 2rem; }
h3 { font-size: 1.125rem; line-height: 1.75rem; }

.text-muted { color: hsl(var(--muted-foreground)); }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }