:root {
  --page-bg: #f5f7fb;
  --surface: #ffffff;
  --text: #172033;
  --muted: #5b6778;
  --border: #d3dbe8;
  --primary: #0057b8;
  --primary-dark: #003d82;
  --nav-bg: #0f2747;
  --focus: #ffbf47;
  --danger-bg: #fff4f2;
  --danger-text: #7a271a;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--page-bg); color: var(--text); }

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 10000;
  transform: translateY(-160%);
  display: inline-block;
  padding: 10px 14px;
  border: 2px solid #ffffff;
  border-radius: 4px;
  background: #111827;
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus,
.skip-link:focus-visible { transform: translateY(0); color: #ffffff; }

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 4px solid var(--focus) !important;
  outline-offset: 2px !important;
  box-shadow: none !important;
}

a { color: var(--primary); text-underline-offset: 0.18em; }
a:hover, a:focus { color: var(--primary-dark); text-decoration: underline; }

.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }

.site-header__inner {
  width: min(1180px, calc(100% - 32px));
  min-height: 88px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--text);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.25;
  text-decoration: none;
}

.site-brand__logo { width: auto; max-width: 220px; height: 56px; object-fit: contain; }
.quick-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }

.quick-links a,
.quick-group summary,
.main-nav a,
.nav-group summary {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-radius: 4px;
  font-weight: 700;
  text-decoration: none;
}

.quick-links a,
.quick-group summary { padding: 8px 12px; color: var(--text); }

.quick-links a:hover,
.quick-links a:focus,
.quick-group summary:hover,
.quick-group summary:focus { background: #e9f1ff; }

.quick-group {
  position: relative;
}

.quick-group summary {
  cursor: pointer;
  list-style: none;
}

.quick-group summary::-webkit-details-marker { display: none; }

.quick-group summary::after {
  content: "";
  width: 0.45em;
  height: 0.45em;
  margin-left: 0.55em;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
}

.quick-group ul {
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  z-index: 1200;
  width: min(680px, calc(100vw - 32px));
  margin: 0;
  padding: 8px;
  list-style: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
  box-shadow: 0 12px 30px rgba(15, 39, 71, 0.18);
}

.quick-group li + li { margin-top: 4px; }
.quick-group ul a {
  width: 100%;
  line-height: 1.3;
  white-space: normal;
}

.main-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--nav-bg);
  border-bottom: 1px solid #091a31;
}

.main-nav__inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  padding: 8px 0;
}

.main-nav a,
.nav-group summary { padding: 8px 12px; color: #ffffff; }

.main-nav a:hover,
.main-nav a:focus,
.nav-group summary:hover,
.nav-group summary:focus { background: #1d4578; color: #ffffff; }

.nav-group { position: relative; }
.nav-group summary { cursor: pointer; list-style: none; }
.nav-group summary::-webkit-details-marker { display: none; }

.nav-group summary::after {
  content: "";
  width: 0.45em;
  height: 0.45em;
  margin-left: 0.55em;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
}

.nav-group[open] summary::after { transform: rotate(225deg) translateY(-2px); }

.nav-group ul {
  position: absolute;
  left: 0;
  top: calc(100% + 4px);
  z-index: 1001;
  width: min(360px, calc(100vw - 32px));
  margin: 0;
  padding: 8px;
  list-style: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--surface);
  box-shadow: 0 12px 30px rgba(15, 39, 71, 0.18);
}

.nav-group li + li { margin-top: 4px; }
.nav-group ul a { width: 100%; color: var(--text); line-height: 1.3; }
.nav-group ul a:hover, .nav-group ul a:focus { background: #e9f1ff; color: var(--primary-dark); }

.nav-disabled {
  display: block;
  min-height: 44px;
  padding: 8px 12px;
  border-radius: 4px;
  color: #667085;
  line-height: 1.3;
}

.page-shell,
.container-scroller { display: block; width: 100%; min-height: auto; background: var(--page-bg); }

.page-shell .page-body-wrapper {
  width: min(1480px, calc(100% - 32px));
  min-height: auto;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  align-items: start;
  gap: 24px;
  background: var(--page-bg);
}

.main-panel {
  float: none;
  width: 100%;
  min-height: auto;
  margin: 24px 0 0;
  background: transparent;
}

.content-wrapper { padding: 0 0 40px; background: transparent; color: var(--text); }
.page-title { margin: 0 0 1.25rem; color: var(--text); font-size: 1.875rem; line-height: 1.25; }

.site-alert {
  margin: 0 0 1.5rem;
  padding: 0.875rem 1rem;
  border-left: 5px solid #b42318;
  border-radius: 4px;
  background: var(--danger-bg);
  color: var(--danger-text);
  font-weight: 700;
}

.card,
.dropdown-menu {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  box-shadow: none;
}

.card .card-body { padding: 1.25rem; }
.card-title, h1, h2, h3, h4, h5, h6 { color: var(--text); overflow-wrap: anywhere; }
.text-muted { color: var(--muted) !important; }
.bg-gray-dark { background: #ffffff !important; border: 1px solid var(--border); }
.scroll-container { scrollbar-color: #52627a #edf1f7; }
.scroll-container:focus { outline: 4px solid var(--focus); outline-offset: 2px; }
button, [role="button"], .btn, .nav-link, .dropdown-item { min-height: 44px; }
img { max-width: 100%; }
table { caption-side: top; }
.table-responsive { overflow-x: auto; }
.footer { width: min(1180px, calc(100% - 32px)); margin: 0 auto; border-top: 1px solid var(--border); background: transparent; }

.site-sidebar {
  position: sticky;
  top: 88px;
  z-index: 100;
  max-height: calc(100vh - 104px);
  margin-top: 24px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
}

.site-sidebar h2 {
  margin: 0;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.3;
}

.side-menu,
.side-menu ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.side-menu { padding: 8px; }
.side-menu li + li { margin-top: 4px; }

.side-menu a,
.side-menu summary {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 10px;
  border-radius: 4px;
  color: var(--text);
  font-weight: 700;
  line-height: 1.25;
  text-decoration: none;
  cursor: pointer;
}

.side-menu a:hover,
.side-menu a:focus,
.side-menu summary:hover,
.side-menu summary:focus {
  background: #e9f1ff;
  color: var(--primary-dark);
}

.side-menu details ul {
  margin: 2px 0 6px 10px;
  padding-left: 10px;
  border-left: 3px solid var(--border);
}

.side-menu details ul a {
  min-height: 38px;
  font-size: 0.95rem;
  font-weight: 600;
}

.accessibility-panel {
  position: fixed;
  top: 116px;
  right: 0;
  z-index: 1100;
  width: 230px;
  max-width: calc(100vw - 24px);
  border: 1px solid #2f5f9f;
  border-right: 0;
  border-radius: 8px 0 0 8px;
  background: #071323;
  color: #ffffff;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.24);
}

.accessibility-panel h2 { margin: 0; padding: 14px 16px 10px; color: #ffffff; font-size: 1rem; line-height: 1.3; }
.accessibility-panel__controls { display: grid; gap: 4px; padding: 0 8px 10px; }

.accessibility-panel button {
  width: 100%;
  min-height: 40px;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: #f7ff74;
  padding: 8px;
  font: inherit;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.accessibility-panel button:hover,
.accessibility-panel button:focus { background: #14365f; color: #ffffff; }
.accessibility-panel button[aria-pressed="true"] { background: #f7ff74; color: #071323; }

body.a11y-contrast {
  --page-bg: #000000;
  --surface: #000000;
  --text: #ffffff;
  --muted: #f4f4f4;
  --border: #ffffff;
  --primary: #ffff66;
  --primary-dark: #ffffff;
  --nav-bg: #000000;
}

body.a11y-blackwhite { filter: grayscale(1); }
body.a11y-negative { filter: invert(1) hue-rotate(180deg); }
body.a11y-nobg { --page-bg: #ffffff; --surface: #ffffff; }
body.a11y-nobg *, body.a11y-nobg *::before, body.a11y-nobg *::after { background-image: none !important; box-shadow: none !important; }
body.a11y-links a { text-decoration: underline !important; text-decoration-thickness: 0.14em; }
body.a11y-large-text { font-size: 112.5%; }
body.a11y-contrast .card, body.a11y-contrast .dropdown-menu, body.a11y-contrast .nav-group ul { background: #000000; color: #ffffff; }
body.a11y-contrast .main-nav a, body.a11y-contrast .nav-group summary, body.a11y-contrast .nav-group ul a, body.a11y-contrast .side-menu a, body.a11y-contrast .side-menu summary { color: #ffff66; }
body.a11y-contrast .nav-disabled { color: #ffffff; }
body.a11y-contrast .site-alert { border-color: #ffff66; background: #000000; color: #ffff66; }

@media (max-width: 1180px) {
  .accessibility-panel {
    position: static;
    width: min(1180px, calc(100% - 32px));
    margin: 16px auto 0;
    border: 1px solid #2f5f9f;
    border-radius: 8px;
  }

  .accessibility-panel__controls { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
}

@media (max-width: 860px) {
  .site-header__inner { align-items: flex-start; flex-direction: column; padding: 16px 0; }
  .quick-links { justify-content: flex-start; }
  .quick-group { width: 100%; }
  .quick-group summary { width: 100%; }
  .quick-group ul { position: static; width: 100%; box-shadow: none; }
  .main-nav { position: static; }
  .main-nav__inner { display: grid; grid-template-columns: 1fr; }
  .main-nav__inner > a, .nav-group summary { width: 100%; }
  .nav-group ul { position: static; width: 100%; box-shadow: none; }
  .page-shell .page-body-wrapper { grid-template-columns: 1fr; }
  .site-sidebar { position: static; max-height: none; }
}

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