:root {
  /* Colors */
  --primary: #00b4d8;
  --primary-dark: #0077b6;
  --secondary: #0f4c75;
  --accent: #90e0ef;
  --light: #f8fbff;
  --dark: #1a1a1a;
  --danger: #e63946;
  --success: #2a9d8f;

  /* Gradients */
  --gradient-main: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.4), rgba(255, 255, 255, 0.1));

  /* Typography */
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  
  /* Spacing */
  --container-width: 1200px;
  --padding-sm: 1rem;
  --padding-md: 2rem;
  --padding-lg: 4rem;

  /* Globals */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 30px rgba(0, 71, 110, 0.15);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--light);
  color: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(0, 180, 216, 0.05) 0%, transparent 20%),
    radial-gradient(circle at 90% 80%, rgba(15, 76, 117, 0.05) 0%, transparent 20%);
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

ul {
  list-style: none;
}

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

/* Layout */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--padding-sm);
}

.section {
  padding: var(--padding-lg) 0;
}

/* Glassmorphism Utilities */
.glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: var(--shadow-sm);
}

.glass-dark {
  background: rgba(15, 76, 117, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: white;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--padding-md);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 992px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  :root { --padding-lg: 3rem; }
}

main {
    min-height: 80vh;
    padding-top: 80px; /* Header height */
}