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

:root {
  --color-primary: #a0522d;
  --color-secondary: #6b3410;
  --color-accent: #f4c89a;
  --color-bg: #fffdf8;
  --color-surface: #fdf5eb;
  --color-text: #3e1d08;
  --color-text-muted: #8d7560;
  --color-border: #ddd0be;
  --font-main: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1100px;
  --radius: 0;
  --spacing-unit: 8px;
  --transition-speed: 0.2s;
}

html {
  font-size: 16px;
  line-height: 1.6;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: calc(var(--spacing-unit) * 2);
  text-transform: uppercase;
}

h1 {
  font-size: 2.5rem;
  border-bottom: 4px solid var(--color-primary);
  padding-bottom: calc(var(--spacing-unit) * 2);
  margin-bottom: calc(var(--spacing-unit) * 3);
}

h2 {
  font-size: 2rem;
  border-left: 6px solid var(--color-secondary);
  padding-left: calc(var(--spacing-unit) * 2);
  margin-top: calc(var(--spacing-unit) * 4);
}

h3 {
  font-size: 1.5rem;
  position: relative;
  padding-bottom: calc(var(--spacing-unit));
}

h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 2px;
  background-color: var(--color-accent);
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
  color: var(--color-text-muted);
}

p {
  margin-bottom: calc(var(--spacing-unit) * 2);
  max-width: 70ch;
}

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

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

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

strong {
  font-weight: 700;
  color: var(--color-secondary);
}

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

blockquote {
  margin: calc(var(--spacing-unit) * 3) 0;
  padding: calc(var(--spacing-unit) * 3);
  background-color: var(--color-surface);
  border-left: 6px solid var(--color-primary);
  border-top: 2px solid var(--color-border);
  border-bottom: 2px solid var(--color-border);
  font-size: 1.125rem;
  position: relative;
}

blockquote::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 40px;
  height: 40px;
  background-color: var(--color-accent);
}

::selection {
  background-color: var(--color-primary);
  color: var(--color-bg);
}

.site-header {
  background-color: var(--color-surface);
  border-bottom: 4px solid var(--color-primary);
  padding: calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 2);
  position: relative;
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-secondary) 0px,
    var(--color-secondary) 20px,
    transparent 20px,
    transparent 40px
  );
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--spacing-unit) * 3);
  align-items: center;
  margin-top: calc(var(--spacing-unit) * 2);
  padding-top: calc(var(--spacing-unit) * 2);
  border-top: 2px solid var(--color-border);
}

.site-nav a {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: calc(var(--spacing-unit)) calc(var(--spacing-unit) * 2);
  border: 2px solid var(--color-border);
  background-color: var(--color-bg);
  transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease, color var(--transition-speed) ease;
  border-bottom: 2px solid var(--color-border);
}

.site-nav a:hover {
  background-color: var(--color-primary);
  border-color: var(--color-secondary);
  color: var(--color-bg);
  border-bottom: 2px solid var(--color-secondary);
}

.site-main {
  padding: calc(var(--spacing-unit) * 4) calc(var(--spacing-unit) * 2);
}

.site-footer {
  background-color: var(--color-secondary);
  color: var(--color-accent);
  padding: calc(var(--spacing-unit) * 4) calc(var(--spacing-unit) * 2);
  border-top: 6px solid var(--color-primary);
  margin-top: calc(var(--spacing-unit) * 6);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -10px;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--color-accent);
}

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

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

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

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--spacing-unit));
  margin-bottom: calc(var(--spacing-unit) * 3);
  padding: calc(var(--spacing-unit) * 2);
  background-color: var(--color-surface);
  border-left: 4px solid var(--color-accent);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.breadcrumbs a {
  color: var(--color-text-muted);
  border-bottom: 1px solid transparent;
}

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

.breadcrumbs::after {
  content: '';
  display: block;
  width: 20px;
  height: 20px;
  background-color: var(--color-primary);
  margin-left: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: calc(var(--spacing-unit) * 3) 0;
  border: 3px solid var(--color-secondary);
  background-color: var(--color-bg);
}

table thead {
  background-color: var(--color-primary);
  color: var(--color-bg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

table th {
  padding: calc(var(--spacing-unit) * 2);
  text-align: left;
  font-weight: 700;
  border: 2px solid var(--color-secondary);
}

table td {
  padding: calc(var(--spacing-unit) * 2);
  border: 2px solid var(--color-border);
}

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

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

table tbody tr:hover {
  background-color: var(--color-accent);
  transition: background-color var(--transition-speed) ease;
}

table tbody tr:hover td {
  border-color: var(--color-primary);
}

details {
  margin: calc(var(--spacing-unit) * 2) 0;
  border: 3px solid var(--color-border);
  background-color: var(--color-surface);
}

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

summary {
  padding: calc(var(--spacing-unit) * 2);
  font-weight: 700;
  cursor: pointer;
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
  position: relative;
  padding-left: calc(var(--spacing-unit) * 4);
}

summary::before {
  content: '';
  position: absolute;
  left: calc(var(--spacing-unit) * 2);
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 8px solid var(--color-primary);
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  transition: transform var(--transition-speed) ease;
}

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

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

details[open] summary {
  background-color: var(--color-primary);
  color: var(--color-bg);
  border-bottom-color: var(--color-secondary);
}

details[open] summary::before {
  border-left-color: var(--color-bg);
}

details > *:not(summary) {
  padding: calc(var(--spacing-unit) * 2);
  border-top: 2px solid var(--color-border);
}

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

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background-color: var(--color-primary);
}

.card::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, transparent 50%, var(--color-accent) 50%);
}

.card:hover {
  border-color: var(--color-primary);
  box-shadow: 8px 8px 0 var(--color-secondary);
}

.card h3 {
  margin-top: 0;
}

button,
input[type="submit"],
input[type="button"] {
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
  background-color: var(--color-primary);
  color: var(--color-bg);
  border: 3px solid var(--color-secondary);
  cursor: pointer;
  transition: background-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease, transform var(--transition-speed) ease;
  position: relative;
}

button:hover,
input[type="submit"]:hover,
input[type="button"]:hover {
  background-color: var(--color-secondary);
  box-shadow: 4px 4px 0 var(--color-accent);
  transform: translate(-2px, -2px);
}

button:active,
input[type="submit"]:active,
input[type="button"]:active {
  transform: translate(0, 0);
  box-shadow: none;
}

button:focus-visible,
input[type="submit"]:focus-visible,
input[type="button"]:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="url"],
textarea,
select {
  font-family: var(--font-main);
  font-size: 1rem;
  padding: calc(var(--spacing-unit) * 1.5);
  border: 3px solid var(--color-border);
  background-color: var(--color-bg);
  color: var(--color-text);
  width: 100%;
  transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-accent);
}

ul, ol {
  margin-left: calc(var(--spacing-unit) * 3);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

li {
  margin-bottom: calc(var(--spacing-unit));
  padding-left: calc(var(--spacing-unit));
}

hr {
  border: none;
  height: 4px;
  background-color: var(--color-border);
  margin: calc(var(--spacing-unit) * 4) 0;
  position: relative;
}

hr::after {
  content: '';
  position: absolute;
  top: -4px;
  left: 0;
  width: 120px;
  height: 12px;
  background-color: var(--color-primary);
}

@media (min-width: 768px) {
  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  h3 {
    font-size: 1.75rem;
  }

  .site-header {
    padding: calc(var(--spacing-unit) * 4) calc(var(--spacing-unit) * 3);
  }

  .site-nav {
    gap: calc(var(--spacing-unit) * 4);
  }

  .site-main {
    padding: calc(var(--spacing-unit) * 6) calc(var(--spacing-unit) * 3);
  }

  .site-footer {
    padding: calc(var(--spacing-unit) * 6) calc(var(--spacing-unit) * 3);
  }

  .card {
    padding: calc(var(--spacing-unit) * 4);
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: 3.5rem;
  }

  .site-nav {
    gap: calc(var(--spacing-unit) * 5);
    flex-wrap: nowrap;
  }

  .card::after {
    width: 80px;
    height: 80px;
  }

  table th,
  table td {
    padding: calc(var(--spacing-unit) * 2.5);
  }
}

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

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

  .site-header {
    border-bottom: 2px solid var(--color-text);
  }

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

  .card {
    break-inside: avoid;
    border: 2px solid var(--color-text);
    box-shadow: none;
  }

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

  body {
    background-color: white;
    color: black;
  }
}