/* /faq/ only. Every selector starts with .faq-hub or .faq-search, so no other page can be affected.
   Colours, spacing, radius and type all come from the shared tokens in /style.css, so light and dark
   themes follow the existing theme switch. No animations or transitions are used. */

.faq-hub { max-width: 1040px; margin: 0 auto; }

/* ---------- Search ---------- */
.faq-search { max-width: 560px; margin: 0 auto var(--space-6); }
.faq-search-field {
  display: flex; align-items: center; gap: var(--space-3);
  min-height: 52px; padding: 0 var(--space-2) 0 var(--space-4);
  background: var(--input-bg); border: 1px solid var(--border-strong); border-radius: var(--radius-md);
}
.faq-search-field:focus-within { outline: 2px solid var(--accent-text); outline-offset: 3px; border-color: var(--accent-border); }
.faq-search-icon { flex: none; width: 18px; height: 18px; color: var(--text-tertiary-readable); pointer-events: none; }
.faq-search-input {
  flex: 1 1 auto; min-width: 0; min-height: 50px; padding: 0;
  background: none; border: 0; border-radius: 0; box-shadow: none; outline: none;
  color: var(--text-primary); font: inherit; font-size: 16px; -webkit-appearance: none; appearance: none;
}
.faq-search-input:focus, .faq-search-input:focus-visible { outline: none; box-shadow: none; }
.faq-search-input::placeholder { color: var(--text-tertiary-readable); opacity: 1; }
.faq-search-input::-webkit-search-cancel-button,
.faq-search-input::-webkit-search-decoration { -webkit-appearance: none; display: none; }
.faq-search-clear {
  flex: none; display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; padding: 0; background: none; border: 0; border-radius: var(--radius-full);
  color: var(--text-secondary); cursor: pointer;
}
.faq-search-clear[hidden] { display: none; }
.faq-search-clear svg { width: 16px; height: 16px; pointer-events: none; }
.faq-search-clear:focus-visible { outline: 2px solid var(--accent-text); outline-offset: -2px; border-radius: var(--radius-full); }
@media (hover: hover) { .faq-search-clear:hover { background: var(--accent-dim); color: var(--text-primary); } }

/* ---------- Two-column layout ---------- */
.faq-hub-ui { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: var(--space-5); align-items: start; }
.faq-hub-ui[hidden] { display: none; }

.faq-hub-cats ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.faq-hub-cat {
  display: block; width: 100%; min-height: 48px; padding: 12px 16px; text-align: left;
  background: none; border: 1px solid transparent; border-radius: var(--radius-md);
  color: var(--text-secondary); font: inherit; font-size: var(--fs-body); font-weight: 600; line-height: 1.35; cursor: pointer;
}
.faq-hub-cat[aria-current="true"] {
  background: var(--accent-dim); border-color: var(--accent-border); color: var(--text-primary);
  box-shadow: inset 3px 0 0 var(--accent-text);
}
.faq-hub-cat:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 2px; }
@media (hover: hover) { .faq-hub-cat:not([aria-current="true"]):hover { background: var(--input-bg); color: var(--text-primary); } }

/* ---------- Right panel ---------- */
.faq-hub-panel {
  min-width: 0; min-height: 340px; padding: var(--space-5);
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--card-shadow);
}
.faq-hub-panel:focus { outline: none; }
.faq-hub-title { margin: 0 0 var(--space-3); font-size: var(--fs-heading-sm); scroll-margin-top: calc(var(--header-h) + 16px); }
.faq-hub-meta { margin: 0 0 var(--space-3); color: var(--text-secondary); font-size: 15px; overflow-wrap: anywhere; }

.faq-hub-rows { list-style: none; margin: 0; padding: 0; }
.faq-hub-rows li + li { border-top: 1px solid var(--border); }
.faq-hub-row {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
  width: 100%; min-height: 56px; padding: 16px 8px; text-align: left;
  background: none; border: 0; border-radius: var(--radius-sm);
  color: var(--text-primary); font: inherit; font-size: var(--fs-card-h); font-weight: 600; line-height: 1.4; cursor: pointer;
}
.faq-hub-row:focus-visible { outline: 2px solid var(--accent-text); outline-offset: -2px; }
@media (hover: hover) { .faq-hub-row:hover { background: var(--accent-dim); } }
.faq-hub-row-text { min-width: 0; overflow-wrap: anywhere; }
.faq-hub-row-cat { display: block; margin-bottom: 2px; color: var(--text-tertiary-readable); font-size: 13px; font-weight: 600; letter-spacing: .02em; }
/* Decorative arrow: static, not a control, never rotates or animates. */
.faq-hub-arrow { flex: none; width: 18px; height: 18px; color: var(--text-secondary); pointer-events: none; transition: none; transform: none; animation: none; }

/* ---------- Answer view ---------- */
.faq-hub-back {
  display: inline-flex; align-items: center; gap: 6px; min-height: 44px; margin: 0 0 var(--space-3) -8px; padding: 0 8px;
  background: none; border: 0; border-radius: var(--radius-sm);
  color: var(--accent-text); font: inherit; font-size: 15px; font-weight: 600; cursor: pointer;
}
.faq-hub-back svg { width: 16px; height: 16px; pointer-events: none; }
.faq-hub-back:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 2px; }
@media (hover: hover) { .faq-hub-back:hover { text-decoration: underline; text-underline-offset: 3px; } }
.faq-hub-q {
  margin: 0 0 var(--space-4); font-size: clamp(20px, 1.2vw + 16px, 26px); line-height: 1.3; text-wrap: balance;
  scroll-margin-top: calc(var(--header-h) + 16px);
}
.faq-hub-q:focus { outline: none; }
.faq-hub-a { max-width: 64ch; color: var(--text-secondary); font-size: var(--fs-body-lg); line-height: 1.7; }
.faq-hub-a p { margin: 0; }
.faq-hub-a a, .faq-hub-empty a, .faq-hub-inline-clear { color: var(--accent-text); text-decoration: underline; text-underline-offset: 2px; }

/* ---------- No results ---------- */
.faq-hub-empty { padding: var(--space-4) 0; color: var(--text-secondary); font-size: var(--fs-body-lg); line-height: 1.65; }
.faq-hub-empty p { margin: 0 0 var(--space-3); overflow-wrap: anywhere; }
.faq-hub-inline-clear { min-height: 44px; padding: 0; background: none; border: 0; font: inherit; font-weight: 600; cursor: pointer; }
.faq-hub-inline-clear:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 2px; }

/* ---------- Plain-HTML copy (all 27 answers). Shown only when the script has not run. ---------- */
.faq-hub .faq-static-cat { margin: 0 0 var(--space-6); scroll-margin-top: calc(var(--header-h) + 16px); }
.faq-hub .faq-static-cat > h2 { margin: 0 0 var(--space-3); font-size: var(--fs-heading-sm); }
.faq-hub .faq-static-item { margin: 0 0 var(--space-4); }
.faq-hub .faq-static-item h3 { margin: 0 0 6px; font-size: var(--fs-card-h); }
.faq-hub .faq-static-a { color: var(--text-secondary); font-size: var(--fs-body); line-height: 1.65; }
.faq-hub .faq-static-a a { color: var(--accent-text); text-decoration: underline; text-underline-offset: 2px; }
.faq-hub.is-enhanced .faq-static { display: none; }

/* ---------- Narrow screens: categories stack above the panel ---------- */
@media (max-width: 819px) {
  .faq-hub-ui { grid-template-columns: minmax(0, 1fr); gap: var(--space-4); }
  .faq-hub-cats ul { flex-direction: row; flex-wrap: wrap; gap: 8px; }
  .faq-hub-cat {
    display: inline-block; width: auto; min-height: 44px; padding: 10px 16px; text-align: center;
    border-color: var(--border-strong); border-radius: var(--radius-full); font-size: 14px;
  }
  .faq-hub-cat[aria-current="true"] { border-color: var(--accent-border); box-shadow: none; }
  .faq-hub-panel { min-height: 0; padding: var(--space-4); }
  .faq-hub-row { padding: 14px 4px; }
}