:root {
  --doc-bg: #ffffff;
  --doc-surface: #ffffff;
  --doc-border: #e2e8f0;
  --doc-primary: #0b2d5c;
  --doc-primary-soft: rgba(255, 255, 255, 0.14);
  --doc-accent: #3a8b3f;
  --doc-text: #0f172a;
  --doc-muted: #5b6b7f;
  --doc-success: #1d7f5f;
  --doc-warning: #b46200;
  --doc-danger: #b42318;
}

body.doc-body {
  background: var(--doc-bg);
  color: var(--doc-text);
  font-family: "Segoe UI", "Inter", Arial, sans-serif;
  line-height: 1.6;
}

.doc-layout {
  gap: 0;
}

.doc-sidebar {
  width: 300px;
  background: var(--doc-primary);
  border-right: 1px solid rgba(255, 255, 255, 0.12);
  min-height: 100vh;
  position: sticky;
  top: 0;
  padding: 28px 20px;
}

.doc-sidebar .brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.doc-sidebar .brand-logo {
  width: 46px;
  height: 46px;
  object-fit: contain;
}

.doc-sidebar .brand-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: #ffffff;
}

.doc-sidebar .brand-subtitle {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

.doc-sidebar .nav-link {
  color: rgba(255, 255, 255, 0.92);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 0.95rem;
}

.doc-sidebar .nav-link:hover,
.doc-sidebar .nav-link.active {
  background: rgba(255, 255, 255, 0.16);
  color: #ffffff;
  font-weight: 600;
}

.doc-sidebar .text-uppercase {
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.6);
}

.doc-main {
  flex: 1;
  min-height: 100vh;
}

.doc-topbar {
  background: var(--doc-surface);
  border-bottom: 1px solid var(--doc-border);
  padding: 18px 32px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.doc-topbar h1 {
  font-weight: 700;
  color: var(--doc-primary);
}

.doc-topbar .form-control {
  border-radius: 999px;
  padding: 10px 16px;
  border: 1px solid var(--doc-border);
}

.doc-content {
  padding: 32px 32px 56px;
  max-width: 1040px;
  margin: 0 auto;
}

.doc-card {
  background: var(--doc-surface);
  border: 1px solid var(--doc-border);
  border-radius: 16px;
  padding: 22px;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.05);
}

.doc-card h3 {
  font-size: 1.1rem;
  color: var(--doc-primary);
}

.doc-muted {
  color: var(--doc-muted);
}

.doc-breadcrumb {
  font-size: 0.9rem;
  color: var(--doc-muted);
}

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

.doc-breadcrumb a:hover {
  text-decoration: underline;
}

.doc-section-title {
  font-size: 1.35rem;
  margin-top: 28px;
  margin-bottom: 14px;
  color: var(--doc-primary);
  font-weight: 700;
}

.doc-callout {
  border-left: 4px solid;
  background: var(--doc-surface);
  border-radius: 14px;
  padding: 16px 18px;
  margin: 20px 0;
  border: 1px solid var(--doc-border);
}

.doc-callout.tip {
  border-left-color: var(--doc-success);
  background: #f1fbf7;
}

.doc-callout.attention {
  border-left-color: var(--doc-warning);
  background: #fff6e6;
}

.doc-callout.problem {
  border-left-color: var(--doc-danger);
  background: #fff1f2;
}

.doc-search-results {
  position: absolute;
  top: 58px;
  right: 24px;
  width: 320px;
  background: var(--doc-surface);
  border: 1px solid var(--doc-border);
  border-radius: 12px;
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.12);
  padding: 12px;
  display: none;
  max-height: 360px;
  overflow: auto;
}

.doc-search-results a {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  color: var(--doc-text);
  text-decoration: none;
}

.doc-search-results a:hover {
  background: #eef4ff;
  color: var(--doc-primary);
}

.hero {
  background: #f8fafc;
  border-radius: 20px;
  padding: 32px;
  border: 1px solid var(--doc-border);
}

.btn-primary {
  background-color: var(--doc-primary);
  border-color: var(--doc-primary);
}

.btn-primary:hover {
  background-color: #09284f;
  border-color: #09284f;
}

.btn-outline-primary {
  color: var(--doc-primary);
  border-color: var(--doc-primary);
}

.btn-outline-primary:hover {
  background-color: var(--doc-primary);
  border-color: var(--doc-primary);
}

.doc-footer {
  color: var(--doc-muted);
  font-size: 0.85rem;
  margin-top: 36px;
}

@media (max-width: 991px) {
  .doc-sidebar {
    position: relative;
    width: 100%;
    min-height: auto;
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }

  .doc-layout {
    flex-direction: column;
  }

  .doc-search-results {
    right: 16px;
    width: calc(100% - 32px);
  }

  .doc-content {
    padding: 28px 20px 48px;
  }
}