/* CSS Reset-lite */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
}

/* CSS Variables */
:root {
  --c-bg: #0E1116;
  --c-surface: #151B22;
  --c-text: #E7E2DA;
  --c-muted: #B7B0A6;
  --c-border: #2A3440;
  --c-primary: #6E5A4B;
  --c-secondary: #2F6F73;
  --c-accent: #D9A441;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --measure: 72ch;
  --font-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-serif: Georgia, 'Times New Roman', serif;
}

/* Body and typography */
body {
  background-color: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-base);
  font-size: 1rem;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--c-accent);
  color: var(--c-bg);
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  font-weight: 600;
  z-index: 1000;
  border-radius: 0 0 var(--radius) 0;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--c-accent);
  outline-offset: 2px;
}

/* Layout container */
.layout {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* Header */
.site-header {
  background-color: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  padding: 1.25rem 0;
}

.header-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.site-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-accent);
  font-family: var(--font-serif);
}

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

nav a {
  color: var(--c-text);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  padding-bottom: 0.25rem;
  transition: border-color 0.2s ease, color 0.2s ease;
}

nav a:hover,
nav a:focus-visible {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
  outline: none;
}

nav a:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 4px;
}

nav a[aria-current="page"] {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

/* Breadcrumb */
.breadcrumb {
  background-color: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  padding: 0.75rem 0;
  font-size: 0.9rem;
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.breadcrumb li:not(:last-child)::after {
  content: '>';
  margin-left: 0.5rem;
  color: var(--c-muted);
}

.breadcrumb a {
  color: var(--c-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--c-accent);
  text-decoration: underline;
}

.breadcrumb [aria-current="page"] {
  color: var(--c-text);
  font-weight: 500;
}

/* Main content */
main {
  flex: 1;
  padding-top: 2.5rem;
  padding-bottom: 3rem;
}

/* Prose container */
.prose {
  max-width: var(--measure);
}

.prose h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--c-accent);
  font-family: var(--font-serif);
}

.prose h2 {
  font-size: 1.65rem;
  line-height: 1.3;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--c-text);
  font-family: var(--font-serif);
}

.prose h3 {
  font-size: 1.35rem;
  line-height: 1.3;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--c-muted);
  font-family: var(--font-serif);
}

.prose p {
  margin-bottom: 1.25rem;
}

.prose ul,
.prose ol {
  margin-bottom: 1.25rem;
  padding-left: 1.75rem;
}

.prose li {
  margin-bottom: 0.5rem;
}

.prose a {
  color: var(--c-accent);
  text-decoration: underline;
  text-decoration-color: var(--c-primary);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s ease, color 0.2s ease;
}

.prose a:hover,
.prose a:focus-visible {
  color: var(--c-accent);
  text-decoration-color: var(--c-accent);
}

.prose a:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
}

.prose a[rel="external"]::after {
  content: ' ↗';
  font-size: 0.85em;
  color: var(--c-muted);
}

.prose strong {
  color: var(--c-accent);
  font-weight: 600;
}

/* Blockquote */
.prose blockquote {
  background-color: var(--c-surface);
  border-left: 4px solid var(--c-accent);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--c-muted);
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

/* Aside / Resource box */
.resource-box {
  background-color: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 2rem 0;
}

.resource-box h3 {
  margin-top: 0;
  font-size: 1.25rem;
  color: var(--c-accent);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background-color: var(--c-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

table caption {
  font-weight: 600;
  text-align: left;
  padding: 1rem;
  background-color: var(--c-primary);
  color: var(--c-text);
  font-size: 1.1rem;
}

thead {
  background-color: var(--c-secondary);
  color: var(--c-text);
}

th,
td {
  padding: 0.875rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--c-border);
}

th {
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background-color: rgba(110, 90, 75, 0.1);
}

/* Responsive table scroll */
@media (max-width: 767px) {
  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}

/* Sticky table header on wide screens */
@media (min-width: 1024px) {
  thead th {
    position: sticky;
    top: 0;
    z-index: 10;
  }
}

/* Details / Summary (Accordion) */
details {
  background-color: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  transition: border-color 0.2s ease;
}

details[open] {
  border-color: var(--c-accent);
}

summary {
  font-weight: 600;
  cursor: pointer;
  color: var(--c-accent);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: color 0.2s ease;
}

summary::-webkit-details-marker {
  display: none;
}

summary::before {
  content: '▸';
  font-size: 1.2em;
  transition: transform 0.2s ease;
  display: inline-block;
}

details[open] summary::before {
  transform: rotate(90deg);
}

summary:hover,
summary:focus-visible {
  color: var(--c-accent);
  outline: none;
}

summary:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 4px;
  border-radius: 4px;
}

details p {
  margin-top: 1rem;
  color: var(--c-text);
}

details p:last-child {
  margin-bottom: 0;
}

/* Footer */
.site-footer {
  background-color: var(--c-surface);
  border-top: 1px solid var(--c-border);
  padding: 1.5rem 0;
  margin-top: auto;
  text-align: center;
  color: var(--c-muted);
  font-size: 0.9rem;
}

/* Responsive breakpoints */
@media (min-width: 768px) {
  .header-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .prose h1 {
    font-size: 2.5rem;
  }

  .prose h2 {
    font-size: 1.85rem;
  }

  .prose h3 {
    font-size: 1.5rem;
  }

  main {
    padding-top: 3rem;
    padding-bottom: 4rem;
  }
}

@media (min-width: 1024px) {
  body {
    font-size: 1.0625rem;
  }

  .layout {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .prose h1 {
    font-size: 2.75rem;
  }

  .prose h2 {
    font-size: 2rem;
  }

  .prose h3 {
    font-size: 1.6rem;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}