/* ============================================================
   CSS VARIABLES & RESET
   ============================================================ */

:root {
  --color-primary: #1E4B6A;
  --color-secondary: #2E7D6B;
  --color-accent: #C86B2A;
  --color-background: #F6F7F9;
  --color-surface: #FFFFFF;
  --color-text: #0F1720;
  --color-text-muted: #4B5A6A;
  --color-border: #D6DCE3;
  --radius: 2px;
  --shadow: 0 1px 3px rgba(15, 23, 32, 0.08);
  --space: 1.5rem;
  --maxw: 1200px;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-stack);
  font-size: 1rem;
  color: var(--color-text);
  background-color: var(--color-background);
  margin: 0;
  padding: 0;
}

/* ============================================================
   TYPOGRAPHY - SWISS STYLE
   ============================================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

h1 {
  font-size: 1.75rem;
  margin-top: 0;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 1.5rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 0.5rem;
}

h3 {
  font-size: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

h4 {
  font-size: 1.125rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
}

strong {
  font-weight: 600;
}

/* ============================================================
   LINKS
   ============================================================ */

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover {
  color: var(--color-secondary);
  text-decoration-thickness: 2px;
}

a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius);
}

/* ============================================================
   GRID LAYOUT - SWISS GRID STRUCTURE
   ============================================================ */

body {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr auto;
  grid-template-areas:
    "header"
    "main"
    "footer";
  min-height: 100vh;
}

header {
  grid-area: header;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

main {
  grid-area: main;
  padding: var(--space);
}

footer {
  grid-area: footer;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: calc(var(--space) * 1.5);
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ============================================================
   HEADER & NAVIGATION
   ============================================================ */

header {
  padding: var(--space);
}

header > div {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0;
  letter-spacing: -0.03em;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
}

nav a {
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

nav a:hover {
  border-bottom-color: var(--color-secondary);
  color: var(--color-secondary);
}

nav a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: var(--radius);
}

/* ============================================================
   BREADCRUMBS
   ============================================================ */

nav[aria-label="Breadcrumb"] {
  display: flex;
  gap: 0.5rem;
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  padding: 0.75rem 0;
  color: var(--color-text-muted);
}

nav[aria-label="Breadcrumb"] a {
  color: var(--color-text-muted);
  text-decoration: none;
}

nav[aria-label="Breadcrumb"] a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

nav[aria-label="Breadcrumb"] span {
  color: var(--color-text-muted);
}

/* ============================================================
   MAIN CONTENT
   ============================================================ */

main {
  max-width: var(--maxw);
  margin: 0 auto;
  width: 100%;
}

article, section {
  background-color: var(--color-surface);
  padding: calc(var(--space) * 1.5);
  margin-bottom: var(--space);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

section + section {
  margin-top: var(--space);
}

/* ============================================================
   TABLES - SWISS GRID PRECISION
   ============================================================ */

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 0.9375rem;
}

caption {
  font-weight: 600;
  text-align: left;
  padding: 1rem;
  background-color: var(--color-primary);
  color: var(--color-surface);
  font-size: 1rem;
  letter-spacing: -0.01em;
}

thead {
  background-color: var(--color-background);
  position: sticky;
  top: 0;
  z-index: 10;
}

th {
  font-weight: 600;
  text-align: left;
  padding: 1rem;
  border-bottom: 2px solid var(--color-border);
  color: var(--color-text);
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
}

tbody tr {
  transition: background-color 0.2s ease;
}

tbody tr:nth-child(even) {
  background-color: var(--color-background);
}

tbody tr:hover {
  background-color: rgba(30, 75, 106, 0.05);
}

/* ============================================================
   DETAILS / SUMMARY ACCORDIONS
   ============================================================ */

details {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  padding: 0;
  transition: box-shadow 0.2s ease;
}

details:hover {
  box-shadow: var(--shadow);
}

details[open] {
  box-shadow: 0 2px 6px rgba(15, 23, 32, 0.1);
}

summary {
  font-weight: 600;
  padding: 1.25rem;
  cursor: pointer;
  list-style: none;
  color: var(--color-primary);
  user-select: none;
  transition: background-color 0.2s ease, color 0.2s ease;
  border-radius: var(--radius);
}

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

summary::before {
  content: "▸";
  display: inline-block;
  width: 1.25rem;
  margin-right: 0.5rem;
  transition: transform 0.2s ease;
  font-size: 0.875rem;
}

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

summary:hover {
  background-color: var(--color-background);
}

summary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: -3px;
}

details > *:not(summary) {
  padding: 0 1.25rem 1.25rem 2.75rem;
  color: var(--color-text);
}

/* ============================================================
   BLOCKQUOTES
   ============================================================ */

blockquote {
  margin: 1.5rem 0;
  padding: 1.25rem 1.5rem;
  background-color: rgba(200, 107, 42, 0.05);
  border-left: 4px solid var(--color-accent);
  font-style: italic;
  color: var(--color-text);
}

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

/* ============================================================
   ASIDE
   ============================================================ */

aside {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
  box-shadow: var(--shadow);
}

aside h2, aside h3 {
  margin-top: 0;
  border-bottom: none;
}

/* ============================================================
   RESPONSIVE TYPOGRAPHY & LAYOUT
   ============================================================ */

@media (min-width: 768px) {
  :root {
    --space: 2rem;
  }

  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.375rem;
  }

  header > div {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  nav {
    gap: 2rem;
  }

  main {
    padding: calc(var(--space) * 1.5);
  }

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

  table {
    font-size: 1rem;
  }
}

@media (min-width: 1024px) {
  :root {
    --space: 2.5rem;
  }

  h1 {
    font-size: 2.75rem;
  }

  h2 {
    font-size: 2rem;
  }

  h3 {
    font-size: 1.5rem;
  }

  body {
    grid-template-columns: 1fr minmax(auto, var(--maxw)) 1fr;
    grid-template-areas:
      "header header header"
      ". main ."
      "footer footer footer";
  }

  main {
    padding: calc(var(--space) * 2) 0;
  }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */

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

  summary::before {
    transition: none;
  }
}

/* ============================================================
   PRINT STYLES
   ============================================================ */

@media print {
  body {
    background-color: white;
    color: black;
  }

  header, footer, nav[aria-label="Breadcrumb"] {
    display: none;
  }

  a {
    text-decoration: underline;
    color: black;
  }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.875rem;
  }

  article, section {
    box-shadow: none;
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }

  table {
    border: 1px solid black;
  }

  thead {
    display: table-header-group;
  }

  tr {
    page-break-inside: avoid;
  }

  details {
    border: 1px solid #ccc;
  }

  details summary {
    display: block;
  }

  details > *:not(summary) {
    display: block !important;
  }
}

/* ============================================================
   UTILITY & FOCUS STATES
   ============================================================ */

:focus {
  outline: none;
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius);
}