/* Reset and Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

/* CSS Custom Properties */
:root {
  /* Brand Colors - Biophilic Palette */
  --primary: #228B22; /* Forest Green */
  --primary-dark: #1F5F1F;
  --accent: #8B4513; /* Saddle Brown */
  --accent-hover: #654321;
  --sky-blue: #87CEEB;
  
  /* Background Colors */
  --bg-primary: #F8F9FA; /* Soft Natural White */
  --bg-secondary: #E8F5E8; /* Light Green Tint */
  --bg-card: #FFFFFF;
  --bg-earth: #F4F1E8; /* Warm Earth Tone */
  
  /* Text Colors */
  --text-primary: #2D3436;
  --text-secondary: #636E72;
  --text-muted: #74B9FF;
  
  /* Border and Shadow */
  --border-color: #DDD;
  --border-radius: 20px;
  --border-radius-sm: 16px;
  --border-radius-lg: 24px;
  
  /* Typography */
  --font-heading: 'Inter', sans-serif;
  --font-body: 'Merriweather', serif;
  --font-mono: 'Roboto Mono', monospace;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  
  /* Shadows */
  --shadow-soft: 0 4px 20px rgba(34, 139, 34, 0.1);
  --shadow-medium: 0 8px 30px rgba(34, 139, 34, 0.15);
  --shadow-large: 0 15px 40px rgba(34, 139, 34, 0.2);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

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

/* Layout Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-md);
}

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

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

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

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Flexbox Utilities */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-column {
  display: flex;
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

/* Text Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-white { color: white; }

.text-lg { font-size: 1.25rem; }
.text-xl { font-size: 1.5rem; }
.text-2xl { font-size: 2rem; }

.font-mono { font-family: var(--font-mono); }
.font-heading { font-family: var(--font-heading); }

/* Spacing Utilities */
.m-0 { margin: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }

/* Background Utilities */
.bg-primary { background-color: var(--bg-primary); }
.bg-secondary { background-color: var(--bg-secondary); }
.bg-card { background-color: var(--bg-card); }
.bg-earth { background-color: var(--bg-earth); }

/* Border Utilities */
.rounded { border-radius: var(--border-radius); }
.rounded-sm { border-radius: var(--border-radius-sm); }
.rounded-lg { border-radius: var(--border-radius-lg); }

/* Shadow Utilities */
.shadow-soft { box-shadow: var(--shadow-soft); }
.shadow-medium { box-shadow: var(--shadow-medium); }
.shadow-large { box-shadow: var(--shadow-large); }

/* Responsive Design */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  h1 { font-size: 2.25rem; }
  h2 { font-size: 2rem; }
  h3 { font-size: 1.75rem; }
  
  .section-padding {
    padding: var(--spacing-lg) 0;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}