/* NDC DESIGN SYSTEM */
/* Neurodiversidad Consciente */

:root {
  /* Typography */
  --font-serif: 'Garamond', 'Palatino', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
  --font-mono: 'Monaco', 'Courier New', monospace;

  /* Colors - Palette */
  --color-coral: #c97c7c;
  --color-coral-light: #e8b4b4;
  --color-coral-dark: #9d5f5f;
  
  --color-teal: #7a9b8e;
  --color-teal-light: #a8b9b3;
  --color-teal-dark: #5d7a6f;
  
  --color-navy: #2c3e50;
  --color-cream: #faf8f3;
  --color-white: #ffffff;

  /* Semantic Colors */
  --color-text-primary: #2c3e50;
  --color-text-secondary: #666666;
  --color-text-tertiary: #999999;
  
  --color-background-primary: #ffffff;
  --color-background-secondary: #faf8f3;
  --color-background-tertiary: #f5f3ed;
  
  --color-border: #e8e6e0;
  --color-border-secondary: #d9d5cd;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Border Radius */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;

  /* Line Height */
  --line-height-tight: 1.4;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --color-text-primary: #f5f3ed;
    --color-text-secondary: #d0d0d0;
    --color-text-tertiary: #999999;
    
    --color-background-primary: #1a1a1a;
    --color-background-secondary: #2a2a2a;
    --color-background-tertiary: #333333;
    
    --color-border: #444444;
    --color-border-secondary: #555555;
    
    --color-cream: #2a2a2a;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background-secondary);
}

/* Typography */
h1 {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 400;
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 400;
  line-height: var(--line-height-tight);
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 400;
  line-height: var(--line-height-tight);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

p {
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-relaxed);
}

p + p {
  margin-top: var(--spacing-md);
}

strong, b {
  font-weight: 500;
  color: var(--color-text-primary);
}

em, i {
  font-style: italic;
}

/* Links */
a {
  color: var(--color-teal);
  text-decoration: none;
  border-bottom: 1px solid var(--color-teal);
  transition: color 0.2s ease, border-color 0.2s ease;
}

a:hover {
  color: var(--color-teal-dark);
  border-bottom-color: var(--color-teal-dark);
}

a:visited {
  color: var(--color-teal-dark);
  border-bottom-color: var(--color-teal-dark);
}

/* Page Structure */
body {
  background-color: var(--color-background-secondary);
}

header {
  background-color: var(--color-background-primary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-lg) var(--spacing-md);
  position: sticky;
  top: 0;
  z-index: 100;
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-lg);
}

.logo {
  font-size: 24px;
  font-weight: 500;
  color: var(--color-navy);
  text-decoration: none;
  border: none;
}

.logo:hover {
  border: none;
}

nav ul {
  list-style: none;
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
}

nav a {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: none;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
}

nav a:hover {
  color: var(--color-teal);
  border: none;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-md);
}

footer {
  background-color: var(--color-background-primary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) var(--spacing-md);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-nav ul {
  list-style: none;
}

.footer-nav li {
  margin-bottom: var(--spacing-sm);
}

.footer-nav a {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.footer-copyright {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  font-size: 12px;
  color: var(--color-text-tertiary);
}

/* Components */
.logo-image {
  max-width: 200px;
  height: auto;
  margin-bottom: var(--spacing-lg);
}

.opening-statement {
  font-size: 20px;
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-2xl);
  color: var(--color-text-primary);
  max-width: 700px;
}

.opening-statement strong {
  color: var(--color-coral);
}

.divider {
  height: 1px;
  background-color: var(--color-border);
  margin: var(--spacing-2xl) 0;
}

.three-doors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
  margin: var(--spacing-2xl) 0;
}

.door {
  background-color: var(--color-background-primary);
  padding: var(--spacing-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
  text-decoration: none;
}

.door:hover {
  border-color: var(--color-teal);
  box-shadow: var(--shadow-md);
}

.door h3 {
  margin-top: 0;
  color: var(--color-text-primary);
}

.door p {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.scene, .system-reading, .definition, .clinical-implication, .property-revealed {
  margin-bottom: var(--spacing-2xl);
}

.scene h4, .system-reading h4, .definition h4, .clinical-implication h4, .property-revealed h4 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
}

.reading {
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--color-border);
}

.reading:last-of-type {
  border-bottom: none;
}

.reading-number {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-teal);
  margin-bottom: var(--spacing-sm);
}

.reading-title {
  font-size: 28px;
  font-family: var(--font-serif);
  font-weight: 400;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.reading-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
  font-style: italic;
  margin-bottom: var(--spacing-lg);
}

.button {
  display: inline-block;
  background-color: var(--color-teal);
  color: white;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  text-decoration: none;
  border: none;
  font-size: 14px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: background-color 0.2s ease;
  cursor: pointer;
}

.button:hover {
  background-color: var(--color-teal-dark);
  border: none;
  color: white;
}

.button-coral {
  background-color: var(--color-coral);
}

.button-coral:hover {
  background-color: var(--color-coral-dark);
}

/* Responsive */
@media (max-width: 768px) {
  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 24px;
  }

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

  nav {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  nav ul {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .three-doors {
    grid-template-columns: 1fr;
  }

  .opening-statement {
    font-size: 18px;
  }
}

/* Print Styles */
@media print {
  nav, header, footer {
    display: none;
  }

  body {
    background: white;
  }

  a {
    border: none;
  }
}