/* CSS Variables - Color System */
:root {
  --background: oklch(0.99 0.005 106);
  --foreground: oklch(0.25 0.01 264);
  --muted-foreground: oklch(0.55 0.015 264);
  --border: oklch(0.93 0.005 106);
}

.dark {
  --background: oklch(0.145 0 0);
  --foreground: oklch(0.985 0 0);
  --muted-foreground: oklch(0.708 0 0);
  --border: oklch(0.269 0 0);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.min-h-screen {
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

.content {
  max-width: 56rem;
  margin: 0 auto;
  padding: 4rem 1rem;
}

.page-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--foreground);
  margin-bottom: 0.5rem;
}

.update-date-header {
  font-size: 1rem;
  color: var(--muted-foreground);
  margin-bottom: 2rem;
  margin-top: 0;
}

@media (min-width: 768px) {
  .page-title {
    font-size: 3rem;
  }
}

.prose {
  max-width: none;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  color: var(--muted-foreground);
}

.prose section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--foreground);
  margin-bottom: 0.5rem;
}

.prose h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--foreground);
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

.back-button {
  display: inline-block;
  margin-bottom: 1.5rem;
  color: var(--foreground);
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.2s;
}

.back-button:hover {
  opacity: 0.7;
}

.prose p {
  line-height: 1.75;
}

.prose ul {
  list-style-type: disc;
  padding-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.prose li {
  line-height: 1.75;
}

.bottom-actions {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-start;
}

.back-button-bottom {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: #2563eb;
  color: white;
  text-decoration: none;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: background-color 0.2s;
}

.back-button-bottom:hover {
  background: #1d4ed8;
}