/* Perenite - Base Styles */

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Root Variables */
:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1e40af;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-background: #ffffff;
  --color-border: #eeeeee;
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --max-width: 1200px;
}

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

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Accessibility - Focus States */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Skip Link for Screen Readers */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #000;
  color: #fff;
  padding: 8px 16px;
  z-index: 100;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

/* Layout */
header {
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
}

main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1rem;
  width: 100%;
}

footer {
  padding: 1.5rem 1rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-light);
}

/* Typography */
h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

h2 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Navigation */
nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

nav a {
  font-weight: 500;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 0.375rem;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  text-decoration: none;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  nav ul {
    flex-direction: column;
    gap: 0.75rem;
  }

  main {
    padding: 1.5rem 1rem;
  }
}

/* Reduced Motion for Accessibility */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Dark Mode Support (optional) */
@media (prefers-color-scheme: dark) {
  :root {
    --color-text: #f0f0f0;
    --color-text-light: #a0a0a0;
    --color-background: #1a1a1a;
    --color-border: #333333;
  }
}