:root {
  --color-primary: #7C3AED;
  --color-secondary: #06B6D4;
  --color-accent: #F97316;
  --color-background: #070A12;
  --color-surface: #0E1630;
  --color-text: #EAF2FF;
  --color-text-muted: #A9B7D0;
  --color-border: #24304F;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0,0,0,0.45);
  --maxw: 1120px;
  --space: 1rem;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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: 100%;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space);
  background: var(--color-primary);
  color: var(--color-text);
  padding: 0.5rem 1rem;
  text-decoration: none;
  border-radius: var(--radius);
  z-index: 1000;
}

.skip-link:focus {
  top: var(--space);
}

header {
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  padding: var(--space);
  box-shadow: var(--shadow);
}

header .container {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space);
}

.site-name {
  font-size: 1.75rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary), var(--color-accent));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
  display: inline-block;
}

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

nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: color 0.25s ease;
}

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

nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transition: width 0.25s ease;
}

nav a:hover::after {
  width: 100%;
}

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

main {
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
  padding: calc(var(--space) * 2) var(--space);
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--space);
}

h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin-bottom: calc(var(--space) * 1.5);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

h2 {
  font-size: 1.75rem;
  line-height: 1.3;
  margin-top: calc(var(--space) * 2.5);
  margin-bottom: var(--space);
  background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}

h3 {
  font-size: 1.35rem;
  line-height: 1.3;
  margin-top: calc(var(--space) * 2);
  margin-bottom: calc(var(--space) * 0.75);
  color: var(--color-secondary);
  font-weight: 600;
}

h4 {
  font-size: 1.15rem;
  line-height: 1.4;
  margin-top: calc(var(--space) * 1.5);
  margin-bottom: calc(var(--space) * 0.5);
  color: var(--color-accent);
  font-weight: 600;
}

p {
  margin-bottom: var(--space);
  color: var(--color-text);
}

a {
  color: var(--color-secondary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color 0.25s ease, text-decoration-thickness 0.25s ease;
}

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

a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 3px;
  box-shadow: 0 0 0 5px rgba(249, 115, 22, 0.2);
}

section {
  margin-bottom: calc(var(--space) * 3);
}

article {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: calc(var(--space) * 1.5);
  margin-bottom: calc(var(--space) * 2);
  box-shadow: var(--shadow);
}

aside {
  background-color: var(--color-surface);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius);
  padding: calc(var(--space) * 1.5);
  margin: calc(var(--space) * 2) 0;
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.3);
}

blockquote {
  background-color: var(--color-surface);
  border-left: 5px solid var(--color-accent);
  border-radius: var(--radius);
  padding: calc(var(--space) * 1.5);
  margin: calc(var(--space) * 2) 0;
  font-style: italic;
  color: var(--color-text-muted);
  box-shadow: -5px 0 15px rgba(249, 115, 22, 0.25);
}

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

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

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: calc(var(--space) * 2) 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

caption {
  caption-side: top;
  padding: var(--space);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--color-secondary);
  text-align: left;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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(14, 22, 48, 0.5);
}

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

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

tbody tr:hover {
  background-color: rgba(124, 58, 237, 0.15);
}

details {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space);
  margin-bottom: var(--space);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

summary {
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  padding: calc(var(--space) * 0.5);
  color: var(--color-secondary);
  list-style: none;
  position: relative;
  padding-left: calc(var(--space) * 2);
  transition: color 0.25s ease;
}

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

summary::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%) rotate(0deg);
  width: 0;
  height: 0;
  border-left: 8px solid var(--color-accent);
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  transition: transform 0.3s ease;
}

details[open] summary::before {
  transform: translateY(-50%) rotate(90deg);
}

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

summary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 6px;
  box-shadow: 0 0 0 5px rgba(249, 115, 22, 0.2);
}

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

details p {
  padding-left: calc(var(--space) * 2);
}

nav[aria-label="Breadcrumb"] {
  margin-bottom: calc(var(--space) * 2);
  padding: calc(var(--space) * 0.75);
  background-color: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

nav[aria-label="Breadcrumb"] ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--space) * 0.5);
  margin: 0;
}

nav[aria-label="Breadcrumb"] li {
  display: flex;
  align-items: center;
  margin: 0;
}

nav[aria-label="Breadcrumb"] li:not(:last-child)::after {
  content: '›';
  margin-left: calc(var(--space) * 0.5);
  color: var(--color-text-muted);
  font-weight: 700;
}

nav[aria-label="Breadcrumb"] a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color 0.25s ease;
}

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

nav[aria-label="Breadcrumb"] [aria-current="page"] {
  color: var(--color-text-muted);
  font-weight: 500;
}

footer {
  background-color: var(--color-surface);
  border-top: 2px solid var(--color-border);
  padding: calc(var(--space) * 2) var(--space);
  margin-top: calc(var(--space) * 4);
  text-align: center;
  color: var(--color-text-muted);
  box-shadow: 0 -10px 30px rgba(0,0,0,0.45);
}

footer p {
  margin: 0;
}

@media (min-width: 768px) {
  html {
    font-size: 17px;
  }

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

  .site-name {
    font-size: 2rem;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  h3 {
    font-size: 1.5rem;
  }

  table {
    display: table;
  }

  thead {
    position: sticky;
    top: 0;
    z-index: 10;
  }

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

@media (min-width: 1024px) {
  html {
    font-size: 18px;
  }

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  h3 {
    font-size: 1.65rem;
  }

  main {
    padding: calc(var(--space) * 3) var(--space);
  }
}

@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;
  }

  html {
    scroll-behavior: auto;
  }
}

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

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

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

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

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.85em;
  }

  table {
    border: 1px solid black;
  }

  th, td {
    border: 1px solid black;
  }

  details[open] summary {
    display: block;
  }

  details summary::before {
    display: none;
  }
}