:root {
  --primary: #0891B2;
  --primary-dark: #044f61;
  --accent: #22C55E;
  --accent-hover: #1b9d4b;
  --bg-primary: #ECFEFF;
  --bg-secondary: #e4f6f7;
  --bg-card: #fff;
  --text-primary: #164E63;
  --text-secondary: #555;
  --border-color: #A5F3FC;
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 6rem;
  
  --border-radius: 8px;
  --border-radius-lg: 16px;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.2);
  --transition: all 0.3s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--spacing-sm);
}

.grid-col-1 { grid-column: span 1; }
.grid-col-2 { grid-column: span 2; }
.grid-col-3 { grid-column: span 3; }
.grid-col-4 { grid-column: span 4; }
.grid-col-5 { grid-column: span 5; }
.grid-col-6 { grid-column: span 6; }
.grid-col-7 { grid-column: span 7; }
.grid-col-8 { grid-column: span 8; }
.grid-col-9 { grid-column: span 9; }
.grid-col-10 { grid-column: span 10; }
.grid-col-11 { grid-column: span 11; }
.grid-col-12 { grid-column: span 12; }

@media (max-width: 768px) {
  .grid-col-mobile-12 { grid-column: span 12; }
  .grid-col-mobile-6 { grid-column: span 6; }
  .grid-col-mobile-4 { grid-column: span 4; }
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 2rem);
}

h4 {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
}

p {
  margin-bottom: var(--spacing-sm);
  font-size: 1rem;
  line-height: 1.7;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-dark);
}

img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.margin-bottom-sm { margin-bottom: var(--spacing-sm); }
.margin-bottom-md { margin-bottom: var(--spacing-md); }
.margin-bottom-lg { margin-bottom: var(--spacing-lg); }

.padding-sm { padding: var(--spacing-sm); }
.padding-md { padding: var(--spacing-md); }
.padding-lg { padding: var(--spacing-lg); }

.hidden { display: none; }
.visible { display: block; }

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }

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

@media (max-width: 768px) {
  .section-spacing {
    padding: var(--spacing-lg) 0;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% auto;
  animation: gradient-flow 3s ease infinite;
}

@keyframes gradient-flow {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.bg-white { background-color: var(--bg-card); }
.bg-primary { background-color: var(--bg-primary); }
.bg-secondary { background-color: var(--bg-secondary); }