:root {
  --primary-color: #E1F5FE;
  --secondary-color: #B3E5FC;
  --background-color: #FAFAFA;
  --footer-bg-color: #E0F7FA;
  --button-color: #4FC3F7;
  --section-bg-1: #E8F5E9;
  --section-bg-2: #F1F8E9;
  --section-bg-3: #F9FBE7;
  --section-bg-4: #FFF8E1;
  --section-bg-5: #FFECB3;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Lora', Georgia, serif;
  
  --spacing-unit: 1.5rem;
  --border-radius: 0.5rem;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.05);
  --transition: all 0.3s ease;
}

body {
  font-family: var(--font-sans);
  line-height: 1.7;
  color: #333;
  background-color: var(--background-color);
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.025em;
  margin-bottom: var(--spacing-unit);
  color: #2c3e50;
}

h1 {
  font-size: 2.5rem;
  line-height: 1.2;
}

h2 {
  font-size: 2rem;
  line-height: 1.25;
}

p {
  margin-bottom: var(--spacing-unit);
  max-width: 65ch;
}

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

a:hover {
  color: #0288D1;
}

.section {
  padding: calc(var(--spacing-unit) * 3) 0;
}

.section-bg-1 {
  background-color: var(--section-bg-1);
}

.section-bg-2 {
  background-color: var(--section-bg-2);
}

.section-bg-3 {
  background-color: var(--section-bg-3);
}

.section-bg-4 {
  background-color: var(--section-bg-4);
}

.section-bg-5 {
  background-color: var(--section-bg-5);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--button-color);
  color: white;
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  border: none;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background-color: #29B6F6;
}

.card {
  background: white;
  border-radius: var(--border-radius);
  padding: var(--spacing-unit);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.nature-border {
  position: relative;
}

.nature-border::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

footer {
  background-color: var(--footer-bg-color);
  padding: calc(var(--spacing-unit) * 2) 0;
  margin-top: calc(var(--spacing-unit) * 3);
}

@media (max-width: 768px) {
  :root {
    --spacing-unit: 1rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .section {
    padding: calc(var(--spacing-unit) * 2) 0;
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}