:root {
  --background: 210 40% 98%;
  --foreground: 224 29% 16%;
  --primary: 173 80% 30%;
  --secondary: 264 72% 56%;
  --muted: 210 26% 93%;
  --muted-foreground: 220 14% 42%;
  --destructive: 0 72% 52%;
  --border: 214 24% 86%;
  --card: 0 0% 100%;
  --shadow-sm: 0 10px 25px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 18px 40px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.16);
  --transition-fast: 180ms ease;
  --transition-smooth: 320ms cubic-bezier(0.22, 1, 0.36, 1);
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 22px;
}

.dark {
  --background: 224 29% 10%;
  --foreground: 210 40% 96%;
  --primary: 173 75% 47%;
  --secondary: 264 85% 68%;
  --muted: 223 20% 16%;
  --muted-foreground: 215 20% 72%;
  --destructive: 0 78% 63%;
  --border: 223 18% 22%;
  --card: 222 26% 13%;
  --shadow-sm: 0 10px 25px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 18px 40px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
}

img {
  max-width: 100%;
  display: block;
}

.nav-link {
  color: hsl(var(--foreground));
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: hsl(var(--primary));
}

.hero-grid {
  background:
    radial-gradient(circle at top left, hsl(var(--primary) / 0.12), transparent 32%),
    radial-gradient(circle at bottom right, hsl(var(--secondary) / 0.12), transparent 32%),
    linear-gradient(180deg, hsl(var(--background)), hsl(var(--background)));
}

.input {
  width: 100%;
  border: 1px solid hsl(var(--border));
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  border-radius: var(--radius-md);
  padding: 0.8rem 0.95rem;
  outline: none;
  transition: var(--transition-fast);
}

.input:focus {
  border-color: hsl(var(--primary));
  box-shadow: 0 0 0 4px hsl(var(--primary) / 0.12);
}

.btn-primary,
.btn-secondary,
.icon-btn {
  border: 0;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-primary {
  border-radius: var(--radius-md);
  background: hsl(var(--primary));
  color: white;
  padding: 0.8rem 1rem;
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  border-radius: var(--radius-md);
  background: hsl(var(--muted));
  color: hsl(var(--foreground));
  padding: 0.8rem 1rem;
  font-weight: 700;
}

.btn-secondary:hover {
  transform: translateY(-1px);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: hsl(var(--primary) / 0.12);
  color: hsl(var(--primary));
}

.icon-btn:hover {
  transform: translateY(-1px);
}

.icon-btn.danger {
  background: hsl(var(--destructive) / 0.12);
  color: hsl(var(--destructive));
}

table {
  border-collapse: collapse;
}

th,
 td {
  vertical-align: middle;
}

@media (max-width: 640px) {
  h2 {
    line-height: 1.15;
  }
}