/* Help Center — employee portal knowledge base (Google/Meta-style) */

#tab-help-center {
  --hc-bg: color-mix(in srgb, var(--bg, #f8fafc) 92%, var(--panel, #fff));
  --hc-ink: var(--text, #0f172a);
  --hc-muted: var(--muted, #64748b);
  --hc-line: var(--border, #e2e8f0);
  --hc-accent: var(--accent, #2563eb);
  --hc-surface: var(--panel, #fff);
  --hc-max: 52rem;
  --hc-wide: 58rem;
}

#tab-help-center.hc-page {
  margin: -0.15rem 0 0;
}

.hc-shell {
  min-height: min(70vh, 42rem);
}

.hc-home {
  max-width: var(--hc-wide);
  margin: 0 auto;
  padding: 0.25rem 0 2rem;
}

.hc-hero {
  text-align: center;
  padding: 1.75rem 0.5rem 1.35rem;
}

.hc-hero__eyebrow {
  margin: 0 0 0.45rem;
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--hc-muted);
}

.hc-hero__title {
  margin: 0 0 0.45rem;
  font-size: clamp(1.55rem, 2.6vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--hc-ink);
  line-height: 1.2;
}

.hc-hero__sub {
  margin: 0 auto 1.25rem;
  max-width: 32rem;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--hc-muted);
}

.hc-search {
  position: relative;
  max-width: 36rem;
  margin: 0 auto;
}

.hc-search__ico {
  position: absolute;
  left: 0.95rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.15rem;
  height: 1.15rem;
  color: var(--hc-muted);
  pointer-events: none;
}

.hc-search__input {
  width: 100%;
  box-sizing: border-box;
  appearance: none;
  border: 1px solid var(--hc-line);
  background: var(--hc-surface);
  color: var(--hc-ink);
  font: inherit;
  font-size: 0.95rem;
  line-height: 1.4;
  padding: 0.85rem 1rem 0.85rem 2.65rem;
  border-radius: 10px;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.hc-search__input::placeholder {
  color: color-mix(in srgb, var(--hc-muted) 85%, transparent);
}

.hc-search__input:hover {
  border-color: color-mix(in srgb, var(--hc-accent) 28%, var(--hc-line));
}

.hc-search__input:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--hc-accent) 55%, var(--hc-line));
  box-shadow:
    0 0 0 3px color-mix(in srgb, var(--hc-accent) 18%, transparent),
    0 1px 2px rgba(15, 23, 42, 0.04);
}

.hc-search__clear {
  position: absolute;
  right: 0.45rem;
  top: 50%;
  transform: translateY(-50%);
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--hc-muted);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.35rem 0.55rem;
  border-radius: 6px;
  cursor: pointer;
}

.hc-search__clear:hover {
  background: color-mix(in srgb, var(--hc-line) 55%, transparent);
  color: var(--hc-ink);
}

.hc-search__clear.hidden {
  display: none;
}

.hc-cats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
  margin: 1.15rem 0 0;
  padding: 0;
  list-style: none;
}

.hc-cat {
  appearance: none;
  border: 1px solid transparent;
  background: transparent;
  color: var(--hc-muted);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 0.75rem;
  border-radius: 8px;
  cursor: pointer;
}

.hc-cat:hover {
  color: var(--hc-ink);
  background: color-mix(in srgb, var(--hc-line) 45%, transparent);
}

.hc-cat.is-active {
  color: var(--hc-accent);
  background: color-mix(in srgb, var(--hc-accent) 10%, transparent);
  border-color: color-mix(in srgb, var(--hc-accent) 22%, transparent);
}

.hc-section {
  margin-top: 1.75rem;
}

.hc-section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin: 0 0 0.65rem;
  padding: 0 0.15rem;
}

.hc-section__title {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--hc-muted);
}

.hc-section__meta {
  margin: 0;
  font-size: 0.75rem;
  color: var(--hc-muted);
}

.hc-results {
  border: 1px solid var(--hc-line);
  border-radius: 12px;
  background: var(--hc-surface);
  overflow: hidden;
}

.hc-result {
  display: block;
  width: 100%;
  text-align: left;
  appearance: none;
  border: 0;
  border-bottom: 1px solid var(--hc-line);
  background: transparent;
  color: inherit;
  font: inherit;
  padding: 0.95rem 1.05rem;
  cursor: pointer;
  transition: background 0.12s ease;
}

.hc-result:last-child {
  border-bottom: 0;
}

.hc-result:hover,
.hc-result:focus-visible {
  background: color-mix(in srgb, var(--hc-accent) 6%, transparent);
  outline: none;
}

.hc-result__cat {
  display: block;
  margin: 0 0 0.2rem;
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--hc-muted);
}

.hc-result__title {
  margin: 0 0 0.25rem;
  font-size: 0.98rem;
  font-weight: 650;
  color: var(--hc-ink);
  line-height: 1.35;
}

.hc-result__title mark {
  background: color-mix(in srgb, #fbbf24 42%, transparent);
  color: inherit;
  border-radius: 2px;
  padding: 0 0.05em;
}

.hc-result__snip {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--hc-muted);
}

.hc-topics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

@media (max-width: 720px) {
  .hc-topics {
    grid-template-columns: 1fr;
  }
}

.hc-topic {
  display: block;
  text-align: left;
  appearance: none;
  border: 1px solid var(--hc-line);
  background: var(--hc-surface);
  color: inherit;
  font: inherit;
  padding: 1rem 1.05rem;
  border-radius: 12px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.hc-topic:hover,
.hc-topic:focus-visible {
  border-color: color-mix(in srgb, var(--hc-accent) 35%, var(--hc-line));
  background: color-mix(in srgb, var(--hc-accent) 5%, var(--hc-surface));
  outline: none;
}

.hc-topic__title {
  margin: 0 0 0.3rem;
  font-size: 0.95rem;
  font-weight: 650;
  color: var(--hc-ink);
  line-height: 1.3;
}

.hc-topic__desc {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--hc-muted);
}

.hc-empty {
  margin: 0;
  padding: 1.75rem 1.1rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--hc-muted);
  border: 1px dashed var(--hc-line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--hc-surface) 70%, transparent);
}

.hc-empty strong {
  color: var(--hc-ink);
  font-weight: 650;
}

.hc-cta {
  margin-top: 1.75rem;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--hc-line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--hc-accent) 6%, var(--hc-surface));
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1rem;
}

.hc-cta__text {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.45;
  color: var(--hc-ink);
  max-width: 28rem;
}

.hc-cta__text span {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.78rem;
  color: var(--hc-muted);
}

/* Article view */
.hc-article {
  max-width: var(--hc-max);
  margin: 0 auto;
  padding: 0.35rem 0 2.25rem;
}

.hc-article__nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  margin: 0 0 1.15rem;
}

.hc-back {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--hc-accent);
  font: inherit;
  font-size: 0.84rem;
  font-weight: 650;
  padding: 0.25rem 0;
  cursor: pointer;
}

.hc-back:hover {
  text-decoration: underline;
}

.hc-crumb {
  margin: 0;
  font-size: 0.78rem;
  color: var(--hc-muted);
}

.hc-crumb button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--hc-muted);
  font: inherit;
  font-size: inherit;
  padding: 0;
  cursor: pointer;
}

.hc-crumb button:hover {
  color: var(--hc-accent);
}

.hc-article__cat {
  margin: 0 0 0.45rem;
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--hc-muted);
}

.hc-article__title {
  margin: 0 0 0.85rem;
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--hc-ink);
  line-height: 1.25;
}

.hc-article__body {
  font-size: 0.95rem;
  line-height: 1.65;
  color: color-mix(in srgb, var(--hc-ink) 92%, var(--hc-muted));
}

.hc-article__body h3 {
  margin: 1.45rem 0 0.45rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--hc-ink);
  letter-spacing: -0.01em;
}

.hc-article__body p {
  margin: 0 0 0.85rem;
}

.hc-article__body ul,
.hc-article__body ol {
  margin: 0 0 0.95rem;
  padding-left: 1.25rem;
}

.hc-article__body li {
  margin: 0.28rem 0;
}

.hc-article__body li::marker {
  color: var(--hc-muted);
}

.hc-article__body strong {
  color: var(--hc-ink);
  font-weight: 650;
}

.hc-article__body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.86em;
  padding: 0.1em 0.35em;
  border-radius: 4px;
  background: color-mix(in srgb, var(--hc-line) 65%, transparent);
}

.hc-related {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--hc-line);
}

.hc-related__title {
  margin: 0 0 0.55rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--hc-muted);
}

.hc-related__list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.hc-related__link {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--hc-accent);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  text-align: left;
  padding: 0.35rem 0;
  cursor: pointer;
}

.hc-related__link:hover {
  text-decoration: underline;
}

@media (max-width: 560px) {
  .hc-hero {
    padding: 1.1rem 0 1rem;
  }
  .hc-search__input {
    font-size: 0.9rem;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
  }
}