/* ========================================
   EIRION - Main Stylesheet
   Design System with Nordic Brand Identity
   ======================================== */

/* ========================================
   CSS Custom Properties (Brand Colors)
   ======================================== */
:root {
  /* Brand Colors - Fixed Palette */
  --deep-nordic-blue: #0F2A44;
  --steel-grey: #8A8F94;
  --ice-white: #F4F7FA;
  --accent-green: #4CAF50;
  --muted-amber: #D6A800;

  /* Semantic Color Assignments */
  --color-primary: var(--deep-nordic-blue);
  --color-secondary: var(--steel-grey);
  --color-background: #FFFFFF;
  --color-background-alt: var(--ice-white);
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #4A4A4A;
  --color-text-light: var(--steel-grey);
  --color-accent: var(--accent-green);
  --color-accent-secondary: var(--muted-amber);

  /* Typography */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Font Sizes */
  --font-size-small: 0.875rem;
  --font-size-base: 1rem;
  --font-size-large: 1.125rem;
  --font-size-h1: 3rem;
  --font-size-h2: 2.25rem;
  --font-size-h3: 1.75rem;
  --font-size-h4: 1.5rem;
  --font-size-h5: 1.25rem;

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

  /* Layout */
  --max-width-content: 1200px;
  --max-width-text: 800px;
  --border-radius: 2px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 400ms ease-in-out;
}

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

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

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

h1 {
  font-size: var(--font-size-h1);
  font-weight: 700;
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

h4 {
  font-size: var(--font-size-h4);
}

h5 {
  font-size: var(--font-size-h5);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

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

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

strong {
  font-weight: 600;
}

/* ========================================
   Layout Utilities
   ======================================== */
.container {
  width: 100%;
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-narrow {
  max-width: var(--max-width-text);
}

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

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

/* ========================================
   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-2-fixed {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

@media (max-width: 768px) {
  .grid-2-fixed {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Responsive Typography
   ======================================== */
@media (max-width: 768px) {
  :root {
    --font-size-h1: 2rem;
    --font-size-h2: 1.75rem;
    --font-size-h3: 1.5rem;
    --font-size-h4: 1.25rem;
  }

  .container {
    padding: 0 var(--spacing-md);
  }

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

  /* Better button layout on mobile */
  .btn-group {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  /* Improve card spacing */
  .card {
    padding: var(--spacing-md);
  }

  /* Footer adjustments */
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center {
  text-align: center;
}

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

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

.text-light {
  color: var(--color-text-light);
}

.mb-0 {
  margin-bottom: 0;
}

.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-0 {
  margin-top: 0;
}

.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);
}