/* ============================================================
   Bible Study Website — Topic Page Shell
   Shared site header grafted onto self-contained topic pages.
   ============================================================ */

/* ── Site header on topic pages ─────────────────────────────
   The topic pages have their own full-screen layouts.
   This fixed bar sits above everything and hosts the main nav.
   ──────────────────────────────────────────────────────────── */
.site-header--topic {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h, 52px);
  z-index: 1000;
  background: var(--color-primary, #5c3d1e);
  color: #fff;
  display: flex;
  align-items: center;
  padding: 0 1.25rem;
  gap: 1.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
  flex-shrink: 0;
}

.site-header--topic .site-title {
  font-size: 1.1rem;
  font-weight: bold;
  color: #fff;
  text-decoration: none;
  white-space: nowrap;
}

.site-header--topic .site-nav {
  display: flex;
  align-items: center;
  gap: 0;
  flex: 1;
}

.site-header--topic .site-nav a {
  color: #e8d9bb;
  text-decoration: none;
  font-family: var(--font-ui, system-ui, sans-serif);
  font-size: 0.9rem;
  margin-right: 1rem;
  white-space: nowrap;
}

.site-header--topic .site-nav a:hover,
.site-header--topic .site-nav a:focus {
  color: #fff;
  outline: none;
}

/* Active section link (parent of current page) */
.site-header--topic .site-nav a[aria-current] {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(201, 162, 74, 0.7);
}

/* Breadcrumb: follows the section link it belongs to */
.site-nav__breadcrumb {
  color: #c9a24a;
  font-family: var(--font-ui, system-ui, sans-serif);
  font-size: 0.9rem;
  white-space: nowrap;
  margin-right: 1rem;
}

/* Version picker in the topic header */
.site-header--topic .version-picker {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-ui, system-ui, sans-serif);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.site-header--topic .version-picker label {
  color: #e8d9bb;
}

.site-header--topic .version-picker select {
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.92);
  color: #2c2416;
  cursor: pointer;
}

.site-header--topic .version-picker select:focus {
  outline: 2px solid #c9a24a;
  outline-offset: 1px;
}

/* ── Sidebar toggle button in topic header ───────────────── */
.topic-sidebar-toggle {
  flex-shrink: 0;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 4px;
  color: #e8d9bb;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.28rem 0.55rem;
  transition: background 0.12s, color 0.12s;
}
.topic-sidebar-toggle:hover { background: rgba(255,255,255,0.15); color: #fff; }
.topic-sidebar-toggle:focus-visible { outline: 2px solid #c9a24a; outline-offset: 2px; }

/* ── Nav action pills inside topic header ────────────────── */
.site-header--topic .site-nav__action {
  display: inline-block;
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 20px;
  padding: 0.16rem 0.75rem;
  color: #e8d9bb;
  font-family: var(--font-ui, system-ui, sans-serif);
  font-size: 0.88rem;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
  margin-right: 0.75rem;
}
.site-header--topic .site-nav__action:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.75);
  color: #fff;
}
.site-header--topic .site-nav__action[aria-current] {
  background: rgba(255,255,255,0.2);
  border-color: #fff;
  color: #fff;
}

/* ── Studies panel button inside topic header ────────────── */
.site-header--topic .nav-panel-btn {
  display: inline-block;
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 20px;
  padding: 0.16rem 0.75rem;
  background: transparent;
  color: #e8d9bb;
  font-family: var(--font-ui, system-ui, sans-serif);
  font-size: 0.88rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
  margin-right: 0;
}
.site-header--topic .nav-panel-btn:hover,
.site-header--topic .nav-panel-btn[aria-expanded="true"] {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.75);
  color: #fff;
}

/* ── Nav panel backdrop + panel (shared, hardcoded for topic pages) ── */
.nav-panel-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 1100;
}
.nav-panel-overlay.is-visible { display: block; }

.nav-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 280px;
  background: #fff;
  z-index: 1200;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.22s ease;
  box-shadow: -4px 0 24px rgba(0,0,0,0.22);
  overflow-y: auto;
}
.nav-panel.is-open { transform: translateX(0); }

.nav-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid rgba(92,61,30,0.15);
  background: #5c3d1e;
  flex-shrink: 0;
}
.nav-panel__heading {
  font-family: system-ui, sans-serif;
  font-size: 1rem;
  font-weight: bold;
  color: #fff;
}
.nav-panel__close {
  background: transparent;
  border: none;
  color: #e8d9bb;
  font-size: 1.25rem;
  cursor: pointer;
  line-height: 1;
  padding: 0.2rem 0.35rem;
  border-radius: 4px;
}
.nav-panel__close:hover { color: #fff; }

.nav-panel__section { padding: 1rem 1.25rem 0.25rem; }
.nav-panel__section-title {
  font-family: system-ui, sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #7a6a55;
  margin: 0 0 0.45rem;
}
.nav-panel__list { list-style: none; margin: 0; padding: 0; }
.nav-panel__list a {
  display: block;
  padding: 0.45rem 0.75rem;
  border-radius: 5px;
  color: #2c2416;
  text-decoration: none;
  font-family: system-ui, sans-serif;
  font-size: 0.95rem;
  transition: background 0.1s;
}
.nav-panel__list a:hover {
  background: #faf8f4;
  color: #5c3d1e;
}
.nav-panel__list a[aria-current="page"] {
  background: #f0e9dc;
  color: #5c3d1e;
  font-weight: 600;
}

/* ── Mobile: collapse nav on narrow screens ──────────────── */
@media (max-width: 600px) {
  .site-header--topic .site-nav a:not(:first-child):not(.site-nav__action) {
    display: none;
  }
  .site-nav__breadcrumb { display: none; }
  .nav-panel { width: 100%; }
}