/* kb.css — public guide library.
   Uses the site theme variables so it follows the theme switcher for free. */

.kb-page {
  background: var(--bg-0);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.kb-main {
  flex: 1;
  padding-top: calc(var(--header-height) + 28px);
  padding-bottom: 64px;
}

/* Hero + search ---------------------------------------------------------- */

.kb-hero {
  text-align: center;
  padding-bottom: 34px;
}

.kb-hero h1 {
  margin: 10px 0 8px;
  font-family: 'Poppins', 'Inter', system-ui, sans-serif;
  font-size: clamp(2rem, 4.4vw, 2.9rem);
  letter-spacing: -0.02em;
}

.kb-hero-sub {
  margin: 0 auto 26px;
  max-width: 46ch;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.6;
}

.kb-search {
  position: relative;
  display: flex;
  align-items: center;
  max-width: 560px;
  margin: 0 auto;
}

.kb-search-icon {
  position: absolute;
  left: 16px;
  width: 18px;
  height: 18px;
  color: var(--muted);
  pointer-events: none;
}

.kb-search input {
  width: 100%;
  padding: 14px 44px 14px 46px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: var(--surface);
  color: var(--text);
  font-size: 0.98rem;
  font-family: inherit;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.kb-search input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--glow-blue);
}

.kb-search input::placeholder {
  color: var(--muted);
}

.kb-search-clear {
  position: absolute;
  right: 14px;
  width: 24px;
  height: 24px;
  border: 0;
  border-radius: 50%;
  background: var(--surface-strong);
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1;
  cursor: pointer;
}

.kb-search-clear:hover {
  color: var(--text);
}

/* Layout ----------------------------------------------------------------- */

.kb-body {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.kb-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 20px);
  display: grid;
  gap: 22px;
}

.kb-sidebar-title {
  margin: 0;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.kb-category-nav {
  display: grid;
  gap: 4px;
}

.kb-category {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease;
}

.kb-category span {
  min-width: 22px;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--surface-soft);
  font-size: 0.76rem;
  font-weight: 700;
  text-align: center;
}

.kb-category:hover {
  background: var(--surface-soft);
  color: var(--text);
}

.kb-category.is-active {
  background: var(--surface);
  color: var(--text);
  box-shadow: inset 2px 0 0 var(--primary);
}

.kb-support-cta {
  padding: 18px;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  background: var(--surface-soft);
}

.kb-support-cta h3 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.kb-support-cta p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

/* Article cards ---------------------------------------------------------- */

.kb-result-note {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.92rem;
}

.kb-article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(268px, 1fr));
  gap: 16px;
}

.kb-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  background: var(--surface);
  color: inherit;
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.kb-card:hover {
  transform: translateY(-3px);
  border-color: rgba(37, 99, 235, 0.45);
  box-shadow: var(--shadow);
}

.kb-card-category {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--highlight);
}

.kb-card h3 {
  margin: 0;
  font-size: 1.06rem;
  line-height: 1.35;
}

.kb-card p {
  margin: 0;
  flex: 1;
  color: var(--muted);
  font-size: 0.91rem;
  line-height: 1.58;
}

.kb-card-meta {
  color: var(--muted);
  font-size: 0.79rem;
}

/* Article view ----------------------------------------------------------- */

.kb-article {
  max-width: 720px;
  padding: 28px 30px 32px;
  border: 1px solid var(--stroke);
  border-radius: var(--radius);
  background: var(--surface);
}

.kb-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 18px;
  padding: 7px 12px 7px 8px;
  border: 1px solid var(--stroke);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.kb-back svg {
  width: 15px;
  height: 15px;
}

.kb-back:hover {
  color: var(--text);
  border-color: var(--primary);
}

.kb-article-category {
  display: block;
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--highlight);
}

.kb-article h2 {
  margin: 8px 0 10px;
  font-family: 'Poppins', 'Inter', system-ui, sans-serif;
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.24;
  letter-spacing: -0.015em;
}

.kb-article-summary {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.62;
}

.kb-article-meta {
  padding-bottom: 20px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--stroke);
  color: var(--muted);
  font-size: 0.81rem;
}

.kb-article-body {
  font-size: 0.99rem;
  line-height: 1.72;
}

.kb-article-body h3 {
  margin: 30px 0 10px;
  font-size: 1.14rem;
  letter-spacing: -0.01em;
}

.kb-article-body h3:first-child {
  margin-top: 0;
}

.kb-article-body p {
  margin: 0 0 14px;
  color: rgba(248, 250, 252, 0.86);
}

.kb-list {
  margin: 0 0 16px;
  padding-left: 22px;
  color: rgba(248, 250, 252, 0.86);
}

.kb-list li {
  margin-bottom: 7px;
}

.kb-code {
  position: relative;
  margin: 0 0 18px;
  border: 1px solid var(--stroke);
  border-radius: var(--radius-sm);
  background: var(--bg-0);
  overflow: hidden;
}

.kb-code pre {
  margin: 0;
  padding: 15px 74px 15px 16px;
  overflow-x: auto;
}

.kb-code code {
  font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  font-size: 0.87rem;
  line-height: 1.62;
  color: #cbe4ff;
  white-space: pre;
}

.kb-code-copy {
  position: absolute;
  top: 9px;
  right: 9px;
  padding: 5px 11px;
  border: 1px solid var(--stroke);
  border-radius: 999px;
  background: var(--surface-strong);
  color: var(--muted);
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
}

.kb-code-copy:hover {
  color: var(--text);
  border-color: var(--primary);
}

.kb-callout {
  margin: 0 0 18px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
  background: rgba(37, 99, 235, 0.1);
  font-size: 0.94rem;
  line-height: 1.62;
}

.kb-callout-warning {
  border-left-color: #f59e0b;
  background: rgba(245, 158, 11, 0.11);
}

.kb-article-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px solid var(--stroke);
}

.kb-article-footer p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

/* Responsive ------------------------------------------------------------- */

@media (max-width: 900px) {
  .kb-body {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .kb-sidebar {
    position: static;
  }

  .kb-category-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .kb-category {
    width: auto;
    border: 1px solid var(--stroke);
    border-radius: 999px;
    padding: 8px 14px;
  }

  .kb-category.is-active {
    box-shadow: none;
    border-color: var(--primary);
  }
}

@media (max-width: 640px) {
  .kb-main {
    padding-top: calc(var(--header-height) + 14px);
  }

  .kb-article {
    padding: 22px 18px 26px;
  }

  .kb-article-grid {
    grid-template-columns: 1fr;
  }
}

/* The bright theme flips surfaces to light; body copy needs to follow. */
:root[data-theme='bright'] .kb-article-body p,
:root[data-theme='bright'] .kb-list {
  color: rgba(15, 23, 42, 0.84);
}

:root[data-theme='bright'] .kb-code {
  background: #0b1220;
}