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

:root {
  /* Brand Colors */
  --primary: #0B1D12; /* Dark Forest */
  --primary-dark: #061109;
  --accent: #D4A373; /* Oak */
  --accent-hover: #b8916a;
  --bg-primary: #FEFAE0; /* Mist */
  --bg-secondary: #E9EDC9; /* Lichen */
  --bg-card: #ffffff;
  --text-primary: #0B1D12;
  --text-secondary: #606C38; /* Olive */
  --border-color: #D4A373;
  
  /* OLED Dark Mode Overrides */
  --dark-bg-primary: #000000;
  --dark-bg-secondary: #121212;
  --dark-text: #E0E0E0;
  --dark-accent: #D4A373;
  
  /* Fonts */
  --font-heading: 'Uncial Antiqua', cursive;
  --font-body: 'IM Fell English', serif;
  
  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-xxl: 64px;
  
  /* Transitions */
  --transition: 0.3s ease;
}

/* Dark Mode (OLED) */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #000000;
    --bg-secondary: #121212;
    --bg-card: #1a1a1a;
    --text-primary: #E0E0E0;
    --text-secondary: #B0B0B0;
    --primary: #0B1D12;
    color-scheme: dark;
  }
}

/* Base Typography */
html {
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
}

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

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--primary);
}

h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

h4 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
  font-size: 1.1rem;
  line-height: 1.7;
}

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

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

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

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

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

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

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

.hidden {
  display: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.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));
}

.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 {
  flex-direction: column;
}

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

/* Spacing Utilities */
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

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

/* Image Utilities */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

.img-cover {
  object-fit: cover;
  width: 100%;
  height: 100%;
}

.img-rounded {
  border-radius: 8px;
}

.img-circle {
  border-radius: 50%;
}

/* Animation Base */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Utility Classes */
.shadow-sm {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.shadow-md {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.shadow-lg {
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.border-radius-sm {
  border-radius: 4px;
}

.border-radius-md {
  border-radius: 8px;
}

.border-radius-lg {
  border-radius: 12px;
}