:root {
  --color-bg: #F7F4EF;
  --color-surface: #FFFFFF;
  --color-text: #12161C;
  --color-muted: #4B5563;
  --color-border: #D7D2C8;
  --color-primary: #1F4D8F;
  --color-secondary: #2E7D6B;
  --color-accent: #D96B2B;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, monospace;
  --space: 1rem;
  --radius: 4px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@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;
  }
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

.container {
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 var(--space);
}

/* Typography - Swiss Style */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-top: calc(var(--space) * 2);
  margin-bottom: var(--space);
  color: var(--color-text);
}

h1 {
  font-size: clamp(1.75rem, 1.5rem + 1.25vw, 2.5rem);
  margin-top: 0;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.375rem, 1.25rem + 0.625vw, 1.75rem);
  letter-spacing: -0.01em;
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: calc(var(--space) * 0.5);
}

h3 {
  font-size: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  color: var(--color-secondary);
}

p {
  margin: 0 0 var(--space) 0;
}

/* Links - High contrast underlines */
a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(217, 107, 43, 0.2);
  border-radius: var(--radius);
}

/* Header */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space);
}

.site-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.site-name:hover {
  color: var(--color-secondary);
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 1.5);
}

.nav-list a {
  text-decoration: none;
  font-weight: 500;
  color: var(--color-text);
  padding: calc(var(--space) * 0.25) 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.nav-list a:hover,
.nav-list a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* Main content */
main {
  padding: calc(var(--space) * 2) 0 calc(var(--space) * 4) 0;
}

article {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--space) * 2);
}

.page-header {
  margin-bottom: var(--space);
}

section {
  background-color: var(--color-surface);
  padding: calc(var(--space) * 1.5);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

/* Breadcrumbs */
.breadcrumb {
  background: transparent;
  border: none;
  padding: 0;
  margin-bottom: var(--space);
}

.breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  margin-left: 0.5rem;
  color: var(--color-border);
}

.breadcrumb a {
  color: var(--color-muted);
}

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

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

/* Tables - Responsive */
.table-wrapper {
  overflow-x: auto;
  margin: var(--space) 0;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

caption {
  padding: var(--space);
  font-weight: 600;
  text-align: left;
  background-color: var(--color-primary);
  color: var(--color-surface);
}

th, td {
  padding: calc(var(--space) * 0.75) var(--space);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  background-color: rgba(31, 77, 143, 0.08);
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
}

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

tr:hover td {
  background-color: rgba(46, 125, 107, 0.05);
}

/* Details/Summary Accordions */
details {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: var(--space);
  transition: border-color 0.2s ease;
}

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

details[open] summary {
  border-bottom: 1px solid var(--color-border);
}

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

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

summary::before {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

details[open] summary::before {
  content: "−";
  background-color: var(--color-accent);
  color: var(--color-surface);
}

summary:hover {
  background-color: rgba(31, 77, 143, 0.05);
}

summary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.details-content {
  padding: var(--space);
}

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

/* Blockquotes */
blockquote {
  margin: calc(var(--space) * 1.5) 0;
  padding: var(--space) calc(var(--space) * 1.5);
  background-color: rgba(247, 244, 239, 0.8);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
}

blockquote p {
  margin: 0;
  color: var(--color-text);
}

blockquote p strong {
  color: var(--color-accent);
}

/* Aside */
aside {
  background-color: rgba(46, 125, 107, 0.08);
  border-color: var(--color-secondary);
}

aside h2 {
  color: var(--color-secondary);
  border-bottom-color: var(--color-secondary);
}

/* Resource list */
.resource-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.resource-list li {
  padding: calc(var(--space) * 0.75) 0;
  border-bottom: 1px solid var(--color-border);
}

.resource-list li:last-child {
  border-bottom: none;
}

.resource-list a {
  font-weight: 600;
}

/* Lists */
ul, ol {
  margin: 0 0 var(--space) 0;
  padding-left: calc(var(--space) * 1.5);
}

li {
  margin-bottom: calc(var(--space) * 0.5);
}

/* Footer */
.site-footer {
  background-color: var(--color-text);
  color: var(--color-bg);
  padding: calc(var(--space) * 2) 0;
  margin-top: calc(var(--space) * 2);
}

.site-footer p {
  margin: 0;
  text-align: center;
  font-size: 0.875rem;
}

/* Responsive - Tablet */
@media (min-width: 768px) {
  .container {
    padding: 0 calc(var(--space) * 2);
  }

  section {
    padding: calc(var(--space) * 2);
  }

  article {
    gap: calc(var(--space) * 2.5);
  }
}

/* Responsive - Desktop */
@media (min-width: 1024px) {
  article {
    display: grid;
    grid-template-columns: 1fr;
    gap: calc(var(--space) * 3);
  }

  .site-header .container {
    flex-wrap: nowrap;
  }

  .nav-list {
    gap: calc(var(--space) * 2);
  }

  section {
    padding: calc(var(--space) * 2.5);
  }

  th, td {
    padding: var(--space) calc(var(--space) * 1.25);
  }
}