/* ============================================================
   Bible Study Website — Study Guide Shared Styles
   Used by study-guides/{slug}/index.html pages.
   Complements topic-guide.css (hero, sections) and style.css.
   ============================================================ */

/* ── Session header ─────────────────────────────────────── */
.sg-session-header {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  margin-bottom: 0.375rem;
  flex-wrap: wrap;
}

.sg-session-num {
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 0.2rem 0.75rem;
  border-radius: 2rem;
  white-space: nowrap;
}

.sg-session-ref {
  font-size: 0.875rem;
  color: var(--color-muted);
  font-style: italic;
}

/* ── Content callout (argument / key point box) ─────────── */
.sg-wave {
  border-left: 3px solid var(--color-primary);
  background: var(--color-surface-alt, rgba(90,60,20,0.05));
  padding: 0.875rem 1.25rem;
  margin: 1.25rem 0 1.75rem;
  border-radius: 0 0.375rem 0.375rem 0;
  font-size: 0.9375rem;
  line-height: 1.65;
}
.sg-wave strong { color: var(--color-primary); }

/* ── Discussion questions block ─────────────────────────── */
.sg-questions {
  background: var(--color-surface-alt, rgba(0,0,0,0.03));
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  padding: 1.25rem 1.5rem 1rem;
  margin-top: 2.25rem;
}

.sg-questions__heading {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-muted);
  margin-bottom: 0.875rem;
}

.sg-questions__list {
  padding-left: 1.25rem;
  margin: 0;
}

.sg-questions__list li {
  margin-bottom: 0.8rem;
  line-height: 1.65;
}

.sg-questions__list li:last-child { margin-bottom: 0; }

/* ── Session tab bar ─────────────────────────────────────── */
.sg-tabs {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--color-bg, #fff);
  border-bottom: 2px solid var(--color-border);
  margin: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.sg-tabs::-webkit-scrollbar { display: none; }

.sg-tabs__inner {
  display: flex;
  min-width: max-content;
  padding: 0 1rem;
}

.sg-tab-btn {
  flex-shrink: 0;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  padding: 0.625rem 0.8rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-muted);
  cursor: pointer;
  white-space: nowrap;
  margin-bottom: -2px;
  transition: color 0.12s, border-color 0.12s;
  line-height: 1;
}
.sg-tab-btn:hover { color: var(--color-text); }
.sg-tab-btn.is-active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 700;
}
/* Separator before first numbered session */
.sg-tab-btn[data-target="s-1"] {
  border-left: 1px solid var(--color-border);
  margin-left: 0.5rem;
  padding-left: 1rem;
}

/* ── Overview table ──────────────────────────────────────── */
.sg-overview-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.9rem;
}
.sg-overview-table th {
  text-align: left;
  padding: 0.5rem 0.75rem;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.sg-overview-table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
.sg-overview-table tr:last-child td { border-bottom: none; }

/* ── Section divider ─────────────────────────────────────── */
.sg-divider {
  border: none;
  border-top: 2px solid var(--color-border);
  margin: 3rem 0;
}

/* ── Dark mode ───────────────────────────────────────────── */
[data-theme="dark"] .sg-tabs,
:root:not([data-theme="light"]) .sg-tabs {
  background: var(--color-bg, #1a1208);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .sg-tabs {
    background: var(--color-bg, #1a1208);
  }
}

/* ── Session progress (SG-D) ────────────────────────────── */
.sg-complete-btn {
  display: block;
  margin-top: 1.5rem;
  padding: 0.45rem 1.1rem;
  border: 1px solid var(--color-border);
  border-radius: 2rem;
  background: transparent;
  color: var(--color-muted);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.sg-complete-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.sg-complete-btn--done {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-on-primary);
}
.sg-complete-btn--done:hover {
  background: transparent;
  color: var(--color-muted);
  border-color: var(--color-border);
}
/* Tab completion dot */
.sg-tab-dot {
  font-size: 0.45em;
  color: var(--color-primary);
  margin-left: 0.3em;
  vertical-align: middle;
  opacity: 0.85;
}

/* ── Mobile ──────────────────────────────────────────────── */
@media (max-width: 640px) {
  /* Tab bar must clear the mobile topbar when sticky */
  .sg-tabs {
    top: var(--topbar-h, 48px);
  }

  /* Session tab buttons: 44px touch target */
  .sg-tab-btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 0.7rem;
    font-size: 0.82rem;
  }

  /* Overview table: horizontal scroll on narrow phones */
  .sg-overview-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
  }

  /* Discussion questions block: tighter padding */
  .sg-questions {
    padding: 1rem 1rem 0.75rem;
  }
}