/* UFOFLEET Knowledge Base — shadcn design system */

:root {
  --ufkb-bg:           #ffffff;
  --ufkb-surface:      #fafafa;
  --ufkb-surface-2:    #f4f4f5;
  --ufkb-border:       #e4e4e7;
  --ufkb-border-hover: #d4d4d8;
  --ufkb-text:         #09090b;
  --ufkb-muted:        #71717a;
  --ufkb-dim:          #a1a1aa;
  --ufkb-accent:       #18181b;
  --ufkb-accent-fg:    #ffffff;
  --ufkb-fatal:        #dc2626;
  --ufkb-fatal-bg:     #fef2f2;
  --ufkb-fatal-border: #fecaca;
  --ufkb-warning:      #d97706;
  --ufkb-warn-bg:      #fffbeb;
  --ufkb-warn-border:  #fde68a;
  --ufkb-info:         #2563eb;
  --ufkb-info-bg:      #eff6ff;
  --ufkb-info-border:  #bfdbfe;
  --ufkb-success:      #16a34a;
  --ufkb-succ-bg:      #f0fdf4;
  --ufkb-succ-border:  #bbf7d0;
  --ufkb-radius:       6px;
  --ufkb-radius-lg:    8px;
  --ufkb-shadow-sm:    0 1px 2px 0 rgba(0,0,0,0.05);
  --ufkb-shadow:       0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px -1px rgba(0,0,0,0.1);
}

/* ── Layout ─────────────────────────────────────────────────────────────── */

.ufkb-layout {
  display: flex;
  gap: 0;
  min-height: 80vh;
  font-family: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ufkb-text);
  -webkit-font-smoothing: antialiased;
}

.ufkb-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
  font-family: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  color: var(--ufkb-text);
  -webkit-font-smoothing: antialiased;
}

/* ── Sidebar ─────────────────────────────────────────────────────────────── */

.ufkb-sidebar {
  width: 240px;
  flex-shrink: 0;
  border-right: 1px solid var(--ufkb-border);
  padding: 1.5rem 0;
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  scrollbar-width: none;
}
.ufkb-sidebar::-webkit-scrollbar { display: none; }

.ufkb-sidebar-section { margin-bottom: 0.25rem; }

.ufkb-sidebar-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ufkb-muted);
  padding: 1rem 1.25rem 0.35rem;
  margin: 0;
}

.ufkb-sidebar-item {
  display: flex;
  align-items: center;
  padding: 6px 0.75rem;
  margin: 0 0.5rem;
  color: var(--ufkb-muted);
  text-decoration: none !important;
  font-size: 0.825rem;
  font-weight: 400;
  border-radius: var(--ufkb-radius);
  transition: all 0.1s;
}
.ufkb-sidebar-item:hover {
  color: var(--ufkb-text);
  background: var(--ufkb-surface-2);
}
.ufkb-sidebar-item.ufkb-active {
  color: var(--ufkb-text);
  background: var(--ufkb-surface-2);
  font-weight: 500;
}

/* ── Article main ────────────────────────────────────────────────────────── */

.ufkb-article-main {
  flex: 1;
  min-width: 0;
  padding: 2.5rem 3rem;
  max-width: 760px;
}

/* ── Hero (homepage) ─────────────────────────────────────────────────────── */

.ufkb-hero {
  padding: 2.5rem 0 2rem;
}
.ufkb-eyebrow {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ufkb-muted);
  margin: 0 0 0.75rem;
}
.ufkb-hero-title {
  font-size: 2rem !important;
  font-weight: 700 !important;
  letter-spacing: -0.04em !important;
  line-height: 1.2 !important;
  margin: 0 0 0.75rem !important;
  color: var(--ufkb-text) !important;
}
.ufkb-hero-sub {
  color: var(--ufkb-muted);
  font-size: 0.9rem;
  max-width: 480px;
  margin: 0 0 1.75rem;
  line-height: 1.65;
}

/* ── Search ──────────────────────────────────────────────────────────────── */

.ufkb-search-wrap {
  position: relative;
  max-width: 480px;
  margin-bottom: 2.5rem;
}
.ufkb-search-icon {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ufkb-dim);
  width: 14px;
  height: 14px;
  pointer-events: none;
}
.ufkb-search-input {
  width: 100% !important;
  background: var(--ufkb-bg) !important;
  border: 1px solid var(--ufkb-border) !important;
  border-radius: var(--ufkb-radius) !important;
  padding: 9px 38px 9px 34px !important;
  color: var(--ufkb-text) !important;
  font-size: 0.85rem !important;
  font-family: inherit !important;
  outline: none !important;
  box-shadow: var(--ufkb-shadow-sm) !important;
  transition: border-color 0.15s, box-shadow 0.15s !important;
  box-sizing: border-box !important;
}
.ufkb-search-input::placeholder { color: var(--ufkb-dim); }
.ufkb-search-input:focus {
  border-color: var(--ufkb-text) !important;
  box-shadow: 0 0 0 3px rgba(9,9,11,0.06) !important;
}
.ufkb-search-kbd {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.65rem;
  color: var(--ufkb-dim);
  background: var(--ufkb-surface-2);
  border: 1px solid var(--ufkb-border);
  padding: 1px 5px;
  border-radius: 4px;
  font-family: 'Geist Mono', monospace;
}
.ufkb-search-results {
  background: var(--ufkb-bg);
  border: 1px solid var(--ufkb-border);
  border-radius: var(--ufkb-radius-lg);
  box-shadow: var(--ufkb-shadow);
  padding: 0.5rem;
  margin-bottom: 1.5rem;
}
.ufkb-search-result-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--ufkb-radius);
  text-decoration: none !important;
  color: var(--ufkb-muted);
  font-size: 0.845rem;
  transition: background 0.1s;
}
.ufkb-search-result-item:hover {
  background: var(--ufkb-surface-2);
  color: var(--ufkb-text);
}
.ufkb-no-results {
  padding: 0.75rem 1rem;
  color: var(--ufkb-dim);
  font-size: 0.845rem;
}

/* ── Category grid ───────────────────────────────────────────────────────── */

.ufkb-category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}
.ufkb-category-card {
  background: var(--ufkb-bg);
  border: 1px solid var(--ufkb-border);
  border-radius: var(--ufkb-radius-lg);
  padding: 1.25rem;
  text-decoration: none !important;
  display: block;
  box-shadow: var(--ufkb-shadow-sm);
  transition: all 0.15s;
}
.ufkb-category-card:hover {
  border-color: var(--ufkb-border-hover);
  box-shadow: var(--ufkb-shadow);
}
.ufkb-category-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--ufkb-radius);
  background: var(--ufkb-surface-2);
  border: 1px solid var(--ufkb-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  margin-bottom: 0.75rem;
}
.ufkb-category-card h3 {
  font-size: 0.875rem !important;
  font-weight: 600 !important;
  margin: 0 0 0.25rem !important;
  color: var(--ufkb-text) !important;
  letter-spacing: -0.01em;
}
.ufkb-category-card p {
  font-size: 0.78rem;
  color: var(--ufkb-muted);
  line-height: 1.5;
  margin: 0 !important;
}
.ufkb-category-count {
  display: inline-block;
  font-size: 0.68rem;
  color: var(--ufkb-dim);
  margin-top: 0.6rem;
  font-weight: 500;
}

/* ── Article list rows ───────────────────────────────────────────────────── */

.ufkb-section-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ufkb-muted);
  margin: 0 0 0.5rem;
}
.ufkb-article-list { display: flex; flex-direction: column; gap: 1px; }
.ufkb-article-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border-radius: var(--ufkb-radius);
  text-decoration: none !important;
  color: var(--ufkb-text);
  transition: background 0.1s;
}
.ufkb-article-row:hover { background: var(--ufkb-surface-2); }
.ufkb-article-row-left {
  display: flex;
  align-items: flex-start;
  gap: 9px;
}
.ufkb-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--ufkb-border-hover);
  flex-shrink: 0;
  margin-top: 7px;
}
.ufkb-article-row span,
.ufkb-row-title {
  font-size: 0.845rem;
  color: var(--ufkb-muted);
}
.ufkb-article-row:hover span,
.ufkb-article-row:hover .ufkb-row-title { color: var(--ufkb-text); }
.ufkb-row-excerpt {
  display: block;
  font-size: 0.75rem;
  color: var(--ufkb-dim);
  margin-top: 2px;
}
.ufkb-arrow {
  color: var(--ufkb-dim);
  font-size: 0.75rem;
  transition: transform 0.1s;
}
.ufkb-article-row:hover .ufkb-arrow { transform: translateX(2px); color: var(--ufkb-muted); }

/* ── Breadcrumb ──────────────────────────────────────────────────────────── */

.ufkb-breadcrumb {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.78rem;
  color: var(--ufkb-muted);
  margin-bottom: 1.75rem;
}
.ufkb-breadcrumb a {
  color: var(--ufkb-muted);
  text-decoration: none !important;
  transition: color 0.1s;
}
.ufkb-breadcrumb a:hover { color: var(--ufkb-text); }
.ufkb-breadcrumb-sep { color: var(--ufkb-dim); }
.ufkb-breadcrumb-current { color: var(--ufkb-text); }

/* ── Article header ──────────────────────────────────────────────────────── */

.ufkb-article-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--ufkb-border);
}
.ufkb-cat-tag {
  display: inline-flex;
  align-items: center;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--ufkb-muted);
  background: var(--ufkb-surface-2);
  border: 1px solid var(--ufkb-border);
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}
.ufkb-article-title {
  font-size: 1.6rem !important;
  font-weight: 700 !important;
  letter-spacing: -0.03em !important;
  line-height: 1.25 !important;
  margin: 0 0 0.6rem !important;
  color: var(--ufkb-text) !important;
}
.ufkb-article-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.75rem;
  color: var(--ufkb-dim);
}
.ufkb-cat-description {
  color: var(--ufkb-muted);
  font-size: 0.875rem;
  margin: 0.25rem 0 0;
}

/* ── Article content ─────────────────────────────────────────────────────── */

.ufkb-article-content h2 {
  font-size: 1rem !important;
  font-weight: 600 !important;
  letter-spacing: -0.015em !important;
  margin: 1.75rem 0 0.6rem !important;
  color: var(--ufkb-text) !important;
}
.ufkb-article-content h3 {
  font-size: 0.875rem !important;
  font-weight: 600 !important;
  margin: 1.25rem 0 0.4rem !important;
  color: var(--ufkb-text) !important;
}
.ufkb-article-content p {
  color: var(--ufkb-muted);
  margin-bottom: 0.8rem;
  font-size: 0.875rem;
  line-height: 1.7;
}
.ufkb-article-content strong { color: var(--ufkb-text); font-weight: 500; }
.ufkb-article-content ul,
.ufkb-article-content ol {
  color: var(--ufkb-muted);
  padding-left: 1.25rem;
  margin-bottom: 0.9rem;
}
.ufkb-article-content li {
  margin-bottom: 0.35rem;
  font-size: 0.875rem;
  line-height: 1.65;
}
.ufkb-article-content img.ufkb-screenshot,
.ufkb-article-content .screenshot {
  display: block;
  width: 100%;
  border: 1px solid var(--ufkb-border);
  border-radius: var(--ufkb-radius);
  margin: 0.75rem 0 1.25rem;
  box-shadow: var(--ufkb-shadow-sm);
}

/* ── Callouts ────────────────────────────────────────────────────────────── */

.ufkb-callout {
  border-radius: var(--ufkb-radius);
  padding: 0.875rem 1rem;
  margin: 1rem 0;
  font-size: 0.845rem;
  line-height: 1.6;
  border: 1px solid;
}
.ufkb-callout-info  { background: var(--ufkb-info-bg);  border-color: var(--ufkb-info-border);  color: #1d4ed8; }
.ufkb-callout-tip   { background: var(--ufkb-succ-bg);  border-color: var(--ufkb-succ-border);  color: #15803d; }
.ufkb-callout-warn  { background: var(--ufkb-warn-bg);  border-color: var(--ufkb-warn-border);  color: #92400e; }
.ufkb-callout-fatal { background: var(--ufkb-fatal-bg); border-color: var(--ufkb-fatal-border); color: #991b1b; }

/* ── Tables ──────────────────────────────────────────────────────────────── */

.ufkb-table,
.ufkb-article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.845rem;
  border: 1px solid var(--ufkb-border);
  border-radius: var(--ufkb-radius);
  overflow: hidden;
}
.ufkb-table th,
.ufkb-article-content th {
  background: var(--ufkb-surface-2);
  color: var(--ufkb-muted);
  font-weight: 500;
  text-align: left;
  padding: 8px 14px;
  border-bottom: 1px solid var(--ufkb-border);
  font-size: 0.775rem;
}
.ufkb-table td,
.ufkb-article-content td {
  padding: 8px 14px;
  border-bottom: 1px solid var(--ufkb-border);
  color: var(--ufkb-muted);
  vertical-align: top;
  font-size: 0.845rem;
}
.ufkb-table tr:last-child td,
.ufkb-article-content tr:last-child td { border-bottom: none; }
.ufkb-table tr:hover td,
.ufkb-article-content tr:hover td { background: var(--ufkb-surface); }

/* ── Step list ───────────────────────────────────────────────────────────── */

.ufkb-steps {
  list-style: none !important;
  padding: 0 !important;
  margin: 0.75rem 0 1.25rem !important;
  counter-reset: ufkb-step;
}
.ufkb-steps li {
  counter-increment: ufkb-step;
  display: flex;
  gap: 12px;
  margin-bottom: 0.75rem !important;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--ufkb-border);
  font-size: 0.875rem;
  color: var(--ufkb-muted);
  line-height: 1.65;
  align-items: flex-start;
}
.ufkb-steps li:last-child { border-bottom: none; margin-bottom: 0 !important; }
.ufkb-steps li::before {
  content: counter(ufkb-step);
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 5px;
  background: var(--ufkb-surface-2);
  border: 1px solid var(--ufkb-border);
  color: var(--ufkb-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  font-weight: 600;
  font-family: 'Geist Mono', monospace;
  margin-top: 1px;
}

/* ── Badges ──────────────────────────────────────────────────────────────── */

.ufkb-badge {
  display: inline-flex;
  align-items: center;
  padding: 1px 7px;
  border-radius: 4px;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: 1px solid;
}
.ufkb-badge-fatal { background: var(--ufkb-fatal-bg); color: var(--ufkb-fatal); border-color: var(--ufkb-fatal-border); }
.ufkb-badge-error { background: var(--ufkb-warn-bg);  color: var(--ufkb-warning); border-color: var(--ufkb-warn-border); }
.ufkb-badge-info  { background: var(--ufkb-info-bg);  color: var(--ufkb-info);   border-color: var(--ufkb-info-border); }

/* ── Feedback ────────────────────────────────────────────────────────────── */

.ufkb-feedback {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ufkb-border);
  display: flex;
  align-items: center;
  gap: 1rem;
}
.ufkb-feedback-label { font-size: 0.8rem; color: var(--ufkb-muted); }
.ufkb-feedback-btn {
  background: var(--ufkb-bg);
  border: 1px solid var(--ufkb-border);
  color: var(--ufkb-muted);
  padding: 5px 12px;
  border-radius: var(--ufkb-radius);
  font-size: 0.78rem;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.1s;
  box-shadow: var(--ufkb-shadow-sm);
}
.ufkb-feedback-btn:hover {
  border-color: var(--ufkb-border-hover);
  color: var(--ufkb-text);
  background: var(--ufkb-surface-2);
}

/* ── TOC ─────────────────────────────────────────────────────────────────── */

.ufkb-toc {
  width: 188px;
  flex-shrink: 0;
  padding: 1.75rem 1.25rem;
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  scrollbar-width: none;
  border-left: 1px solid var(--ufkb-border);
}
.ufkb-toc::-webkit-scrollbar { display: none; }
.ufkb-toc-title {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ufkb-muted);
  margin: 0 0 0.6rem;
}
.ufkb-toc-link {
  display: block;
  font-size: 0.775rem;
  color: var(--ufkb-dim);
  text-decoration: none !important;
  padding: 3px 0 3px 10px;
  border-left: 1px solid var(--ufkb-border);
  transition: all 0.1s;
  cursor: pointer;
  line-height: 1.45;
  margin-bottom: 1px;
}
.ufkb-toc-link:hover { color: var(--ufkb-muted); border-left-color: var(--ufkb-border-hover); }
.ufkb-toc-link.ufkb-toc-active { color: var(--ufkb-text); border-left-color: var(--ufkb-text); font-weight: 500; }

/* ── Support box ─────────────────────────────────────────────────────────── */

.ufkb-toc-support,
.ufkb-support-footer {
  background: var(--ufkb-surface-2);
  border: 1px solid var(--ufkb-border);
  border-radius: var(--ufkb-radius-lg);
  padding: 1.1rem;
  margin-top: 1.5rem;
}
.ufkb-support-footer {
  max-width: 480px;
  margin: 2rem 0 3rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.ufkb-toc-support h4 {
  font-size: 0.825rem !important;
  font-weight: 600 !important;
  margin: 0 0 0.3rem !important;
  color: var(--ufkb-text) !important;
  letter-spacing: -0.01em;
}
.ufkb-toc-support p {
  font-size: 0.755rem;
  color: var(--ufkb-muted);
  margin: 0 0 0.75rem !important;
  line-height: 1.5;
}
.ufkb-support-footer p {
  font-size: 0.845rem;
  color: var(--ufkb-muted);
  margin: 0;
}
.ufkb-support-btn {
  display: inline-block;
  background: var(--ufkb-accent);
  color: var(--ufkb-accent-fg) !important;
  padding: 5px 12px;
  border-radius: var(--ufkb-radius);
  font-size: 0.775rem;
  font-weight: 500;
  text-decoration: none !important;
  transition: opacity 0.15s;
  box-shadow: var(--ufkb-shadow-sm);
  white-space: nowrap;
}
.ufkb-support-btn:hover { opacity: 0.85; }

/* ── Responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 900px) {
  .ufkb-toc { display: none; }
}
@media (max-width: 680px) {
  .ufkb-sidebar { display: none; }
  .ufkb-article-main { padding: 1.5rem 1rem; }
  .ufkb-category-grid { grid-template-columns: 1fr; }
  .ufkb-support-footer { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
}