:root {
  --color-primary: #2F2A7A;
  --color-secondary: #1E6F7A;
  --color-accent: #D6A63A;
  --color-background: #0B0F14;
  --color-surface: #121A22;
  --color-text: #E9EEF5;
  --color-text-muted: #B7C2CF;
  --color-border: #263241;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --space: clamp(14px, 2.2vw, 22px);
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  grid-template-columns: 1fr;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.2;
  margin-bottom: var(--space);
  font-weight: 700;
  color: var(--color-text);
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  line-height: 1.3;
  margin-top: calc(var(--space) * 2);
  margin-bottom: var(--space);
  font-weight: 600;
  color: var(--color-text);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  line-height: 1.4;
  margin-top: calc(var(--space) * 1.5);
  margin-bottom: calc(var(--space) * 0.75);
  font-weight: 600;
  color: var(--color-text);
}

p {
  margin-bottom: calc(var(--space) * 0.75);
  font-size: clamp(1rem, 2vw, 1.125rem);
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
  color: var(--color-text);
  opacity: 0.9;
}

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

ul, ol {
  margin-left: calc(var(--space) * 1.5);
  margin-bottom: var(--space);
}

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

header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space) calc(var(--space) * 1.5);
  box-shadow: var(--shadow);
}

header .site-name {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: calc(var(--space) * 0.5);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 0.75);
  align-items: center;
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  padding: calc(var(--space) * 0.4) calc(var(--space) * 0.8);
  border-radius: calc(var(--radius) * 0.5);
  background-color: rgba(47, 42, 122, 0.3);
  transition: background-color 0.2s ease, color 0.2s ease;
  font-weight: 500;
}

nav a:hover {
  background-color: var(--color-primary);
  color: var(--color-text);
}

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

main {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--space) * 2);
  padding: calc(var(--space) * 2) calc(var(--space) * 1.5);
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

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

aside {
  background-color: var(--color-surface);
  padding: calc(var(--space) * 1.5);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
  border-left: 4px solid var(--color-accent);
}

aside p {
  color: var(--color-text-muted);
  font-size: clamp(0.9rem, 1.8vw, 1rem);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 0.5);
  margin-bottom: calc(var(--space) * 1.5);
  font-size: clamp(0.875rem, 1.8vw, 0.95rem);
  color: var(--color-text-muted);
}

.breadcrumbs a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--color-accent);
}

.breadcrumbs span {
  color: var(--color-border);
}

blockquote {
  background-color: rgba(30, 111, 122, 0.15);
  border-left: 4px solid var(--color-secondary);
  padding: calc(var(--space) * 1.25);
  margin: calc(var(--space) * 1.5) 0;
  border-radius: calc(var(--radius) * 0.5);
  font-style: italic;
  color: var(--color-text);
}

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: calc(var(--space) * 1.5) 0;
  background-color: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}

caption {
  caption-side: top;
  padding: calc(var(--space) * 0.75);
  font-weight: 600;
  text-align: left;
  background-color: rgba(47, 42, 122, 0.3);
  color: var(--color-text);
  font-size: clamp(1rem, 2vw, 1.125rem);
}

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

th {
  padding: calc(var(--space) * 0.75);
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid var(--color-border);
}

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

tbody tr:nth-child(odd) {
  background-color: rgba(18, 26, 34, 0.5);
}

tbody tr:nth-child(even) {
  background-color: rgba(38, 50, 65, 0.2);
}

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

tbody tr:hover {
  background-color: rgba(30, 111, 122, 0.2);
}

details {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--space) * 1);
  margin-bottom: calc(var(--space) * 1);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-accent);
  padding: calc(var(--space) * 0.5);
  border-radius: calc(var(--radius) * 0.5);
  transition: background-color 0.2s ease, color 0.2s ease;
  list-style: none;
  display: flex;
  align-items: center;
}

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

summary::before {
  content: "▶";
  display: inline-block;
  margin-right: calc(var(--space) * 0.5);
  transition: transform 0.2s ease;
}

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

summary:hover {
  background-color: rgba(47, 42, 122, 0.2);
}

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

details[open] summary {
  margin-bottom: calc(var(--space) * 0.75);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: calc(var(--space) * 0.75);
}

details p {
  padding: calc(var(--space) * 0.5) calc(var(--space) * 0.5) 0;
  color: var(--color-text-muted);
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: calc(var(--space) * 1.5);
  margin: calc(var(--space) * 1.5) 0;
}

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--space) * 1.5);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.card h3 {
  margin-top: 0;
  color: var(--color-accent);
}

.link-list {
  list-style: none;
  margin-left: 0;
}

.link-list li {
  margin-bottom: calc(var(--space) * 0.75);
  padding-left: calc(var(--space) * 1.25);
  position: relative;
}

.link-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}

footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: calc(var(--space) * 2) calc(var(--space) * 1.5);
  text-align: center;
  color: var(--color-text-muted);
  margin-top: calc(var(--space) * 3);
}

footer nav {
  justify-content: center;
  margin-bottom: calc(var(--space) * 1);
}

footer p {
  font-size: clamp(0.875rem, 1.8vw, 0.95rem);
  margin-bottom: 0;
}

@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  table {
    font-size: clamp(0.95rem, 1.8vw, 1rem);
  }

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

@media (min-width: 1024px) {
  main {
    grid-template-columns: 1fr 320px;
    grid-template-areas:
      "content sidebar";
  }

  article, section {
    grid-area: content;
  }

  aside {
    grid-area: sidebar;
    align-self: start;
    position: sticky;
    top: calc(var(--space) * 2);
  }

  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  nav {
    gap: calc(var(--space) * 1.25);
  }
}

@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;
  }

  .card:hover {
    transform: none;
  }

  summary::before {
    transition: none;
  }
}

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

  header, footer, nav, aside {
    display: none;
  }

  main {
    display: block;
    padding: 0;
    max-width: 100%;
  }

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

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

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
  }

  details {
    border: 1px solid #ccc;
  }

  summary::before {
    content: "";
  }

  details[open] summary {
    border-bottom: 1px solid #ccc;
  }
}