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

:root {
  --color-primary: #0d9488;
  --color-secondary: #134e4a;
  --color-accent: #99f6e4;
  --color-bg: #ffffff;
  --color-surface: #f0fdfa;
  --color-text: #0c3530;
  --color-text-muted: #5b8a83;
  --color-border: #b8ddd6;
  --font-main: 'Verdana', 'Geneva', 'Tahoma', sans-serif;
  --max-width: 1100px;
  --radius: 0px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --transition-speed: 0.2s;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: bold;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-secondary);
  text-shadow: 1px 1px 0px var(--color-accent);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.5px;
}

h2 {
  font-size: 2rem;
  margin-top: var(--spacing-lg);
  border-bottom: 3px solid var(--color-primary);
  padding-bottom: var(--spacing-xs);
}

h3 {
  font-size: 1.5rem;
  margin-top: var(--spacing-md);
  color: var(--color-primary);
}

h4 {
  font-size: 1.25rem;
  margin-top: var(--spacing-md);
}

h5 {
  font-size: 1.125rem;
  margin-top: var(--spacing-sm);
}

h6 {
  font-size: 1rem;
  margin-top: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-speed) ease, border-color var(--transition-speed) ease, background-color var(--transition-speed) ease;
  font-weight: 600;
}

a:hover {
  color: var(--color-secondary);
  border-bottom-color: var(--color-accent);
  background-color: var(--color-surface);
}

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

strong {
  font-weight: bold;
  color: var(--color-secondary);
}

em {
  font-style: italic;
  color: var(--color-text-muted);
}

blockquote {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-surface);
  border-left: 5px solid var(--color-primary);
  font-style: italic;
  color: var(--color-text-muted);
  position: relative;
}

blockquote::before {
  content: '"';
  font-size: 4rem;
  color: var(--color-accent);
  position: absolute;
  top: -10px;
  left: 10px;
  line-height: 1;
  text-shadow: 2px 2px 0px var(--color-primary);
}

::selection {
  background-color: var(--color-accent);
  color: var(--color-secondary);
}

.site-header {
  background-color: var(--color-secondary);
  color: var(--color-bg);
  padding: var(--spacing-lg) var(--spacing-md);
  box-shadow: 0 4px 6px rgba(13, 148, 136, 0.1);
  border-bottom: 4px solid var(--color-primary);
}

.site-header h1 {
  color: var(--color-accent);
  text-shadow: 2px 2px 0px var(--color-primary);
  margin: 0;
}

.site-header p {
  color: var(--color-surface);
  margin: var(--spacing-xs) 0 0 0;
  font-size: 0.95rem;
}

.site-nav {
  background-color: var(--color-primary);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 4px rgba(12, 53, 48, 0.15);
}

.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  max-width: var(--max-width);
  margin: 0 auto;
}

.site-nav li {
  flex: 1 1 auto;
}

.site-nav a {
  display: block;
  padding: var(--spacing-md) var(--spacing-md);
  color: var(--color-bg);
  border-bottom: none;
  text-align: center;
  font-weight: bold;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.5px;
  outline: 2px solid var(--color-secondary);
  outline-offset: -2px;
  background-color: var(--color-primary);
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.site-nav a:hover {
  background-color: var(--color-accent);
  color: var(--color-secondary);
  box-shadow: inset 0 0 0 3px var(--color-secondary);
}

.site-nav a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: -3px;
  background-color: var(--color-secondary);
  color: var(--color-accent);
}

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

.site-main {
  padding: var(--spacing-xl) 0;
}

.breadcrumbs {
  padding: var(--spacing-sm) 0;
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  align-items: center;
}

.breadcrumbs a {
  color: var(--color-text-muted);
  font-weight: normal;
  border-bottom: 1px dotted var(--color-border);
}

.breadcrumbs a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

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

.card {
  background-color: var(--color-surface);
  border: 3px solid var(--color-border);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  transition: box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.card:hover {
  box-shadow: 0 6px 12px rgba(13, 148, 136, 0.15);
  border-color: var(--color-primary);
}

.card h2, .card h3 {
  margin-top: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  background-color: var(--color-bg);
  border: 3px solid var(--color-border);
  font-size: 0.95rem;
}

table th {
  background-color: var(--color-primary);
  color: var(--color-bg);
  padding: var(--spacing-md);
  text-align: left;
  font-weight: bold;
  border: 2px solid var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.85rem;
}

table td {
  padding: var(--spacing-md);
  border: 2px solid var(--color-border);
  transition: background-color var(--transition-speed) ease;
}

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

table tr:hover {
  background-color: var(--color-accent);
}

table tr:hover td {
  color: var(--color-secondary);
}

details {
  margin: var(--spacing-md) 0;
  border: 3px solid var(--color-border);
  background-color: var(--color-surface);
  transition: border-color var(--transition-speed) ease;
}

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

summary {
  padding: var(--spacing-md);
  cursor: pointer;
  background-color: var(--color-primary);
  color: var(--color-bg);
  font-weight: bold;
  user-select: none;
  outline: 2px solid var(--color-secondary);
  outline-offset: -2px;
  transition: background-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

summary:hover {
  background-color: var(--color-secondary);
  box-shadow: inset 0 0 0 3px var(--color-accent);
}

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

summary::marker {
  content: '▶ ';
  color: var(--color-accent);
  font-size: 0.8rem;
}

details[open] summary::marker {
  content: '▼ ';
}

details > *:not(summary) {
  padding: var(--spacing-md);
  animation: slideDown 0.2s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.site-footer {
  background-color: var(--color-secondary);
  color: var(--color-surface);
  padding: var(--spacing-xl) var(--spacing-md);
  margin-top: var(--spacing-xl);
  border-top: 4px solid var(--color-primary);
}

.site-footer a {
  color: var(--color-accent);
  border-bottom-color: transparent;
}

.site-footer a:hover {
  color: var(--color-bg);
  border-bottom-color: var(--color-accent);
  background-color: transparent;
}

.site-footer p {
  margin-bottom: var(--spacing-sm);
}

button, .button {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-primary);
  color: var(--color-bg);
  border: 3px solid var(--color-secondary);
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: bold;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  text-shadow: 1px 1px 0px var(--color-secondary);
}

button:hover, .button:hover {
  background-color: var(--color-accent);
  color: var(--color-secondary);
  box-shadow: 0 4px 8px rgba(13, 148, 136, 0.2);
  border-bottom-color: var(--color-secondary);
}

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

button:active, .button:active {
  transform: translateY(2px);
  box-shadow: 0 2px 4px rgba(13, 148, 136, 0.2);
}

input[type="text"],
input[type="email"],
input[type="search"],
input[type="url"],
textarea {
  width: 100%;
  padding: var(--spacing-sm);
  font-family: var(--font-main);
  font-size: 1rem;
  border: 3px solid var(--color-border);
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  margin-bottom: var(--spacing-md);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="search"]:focus,
input[type="url"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-accent);
}

ul, ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

ul li, ol li {
  margin-bottom: var(--spacing-xs);
  line-height: 1.6;
}

hr {
  border: none;
  border-top: 3px solid var(--color-border);
  margin: var(--spacing-xl) 0;
}

code {
  background-color: var(--color-surface);
  color: var(--color-secondary);
  padding: 2px 6px;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
  border: 2px solid var(--color-border);
}

pre {
  background-color: var(--color-surface);
  border: 3px solid var(--color-border);
  padding: var(--spacing-md);
  overflow-x: auto;
  margin: var(--spacing-lg) 0;
}

pre code {
  border: none;
  padding: 0;
}

@media (min-width: 768px) {
  .container {
    padding: var(--spacing-lg);
  }

  .site-header {
    padding: var(--spacing-xl) var(--spacing-lg);
  }

  .site-nav ul {
    flex-wrap: nowrap;
  }

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  h3 {
    font-size: 1.75rem;
  }

  .card {
    padding: var(--spacing-xl);
  }

  table {
    font-size: 1rem;
  }

  table th {
    font-size: 0.9rem;
  }
}

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

  .site-header h1 {
    font-size: 3.5rem;
  }

  .site-nav a {
    font-size: 1rem;
    padding: var(--spacing-md) var(--spacing-lg);
  }

  h1 {
    font-size: 3.5rem;
  }

  h2 {
    font-size: 2.5rem;
  }

  .site-main {
    padding: var(--spacing-xl) 0 calc(var(--spacing-xl) * 2) 0;
  }
}

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

  summary::marker {
    transition: none;
  }

  details > *:not(summary) {
    animation: none;
  }
}

@media print {
  .site-nav,
  .site-footer,
  .breadcrumbs {
    display: none;
  }

  body {
    background-color: white;
    color: black;
    font-size: 12pt;
  }

  .container {
    max-width: 100%;
    padding: 0;
  }

  .site-main {
    padding: 0;
  }

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

  .card {
    border: 1px solid black;
    page-break-inside: avoid;
  }

  h1, h2, h3, h4, h5, h6 {
    page-break-after: avoid;
    text-shadow: none;
  }

  table {
    border: 1px solid black;
  }

  table th {
    background-color: #e0e0e0;
    color: black;
  }
}