/* ================================================================
   TOOLSHUB4U — BULK HREF GENERATOR
   Namespaced under .bhg-, reuses main.css tokens + seo-toolkit tk-*
   ================================================================ */

/* ── Section shell — vertical rhythm between cards ─────────── */
.bhg-shell { display: flex; flex-direction: column; gap: 1.5rem; }
.bhg-shell .tk-header { margin-bottom: 0; }

/* ── Two-column input layout ──────────────────────────────── */
.bhg-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: stretch;
}
@media (max-width: 900px) {
  .bhg-inputs { grid-template-columns: 1fr; }
}

/* ── Mode selector cards ───────────────────────────────────── */
.bhg-modes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}
.bhg-mode-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  border: 2px solid var(--border, rgba(148,163,184,.16));
  border-radius: 14px;
  background: var(--surface, #0e1626);
  cursor: pointer;
  transition: border-color .2s, background .2s, box-shadow .2s;
}
.bhg-mode-card:hover { border-color: var(--primary-100, rgba(99,102,241,.22)); }
.bhg-mode-card input { position: absolute; opacity: 0; width: 0; height: 0; }
.bhg-mode-card:has(input:checked) {
  border-color: var(--primary, #6366f1);
  background: var(--primary-50, rgba(99,102,241,.12));
  box-shadow: 0 0 0 1px var(--primary, #6366f1);
}
.bhg-mode-card:has(input:focus-visible) { outline: 2px solid var(--accent, #22d3ee); outline-offset: 2px; }
.bhg-mode-card__icon { font-size: 1.4rem; color: var(--primary-light, #818cf8); }
.bhg-mode-card__name { font-weight: 700; font-size: .95rem; color: var(--text-primary, #e7ecf5); }
.bhg-mode-card__desc { font-size: .8rem; color: var(--text-secondary, #9aa8bd); line-height: 1.5; }

/* checked + focus states for chip-style radio/checkbox labels */
.tk-chip:has(input:checked) {
  background: var(--primary-50, rgba(99,102,241,.12));
  border-color: var(--primary, #6366f1);
  color: var(--primary-light, #818cf8);
}
.tk-chip:has(input:focus-visible) { outline: 2px solid var(--accent, #22d3ee); outline-offset: 2px; }

/* ── Counters ──────────────────────────────────────────────── */
.bhg-counter {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-secondary, #9aa8bd);
  background: var(--bg-secondary, #0b1120);
  padding: 3px 10px;
  border-radius: 100px;
  border: 1px solid var(--border, rgba(148,163,184,.16));
}
.bhg-counter__num { color: var(--primary-light, #818cf8); font-variant-numeric: tabular-nums; }

/* ── Summary grid ──────────────────────────────────────────── */
.bhg-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
}
.bhg-summary__item {
  padding: 12px 14px;
  background: var(--surface, #0e1626);
  border: 1px solid var(--border, rgba(148,163,184,.16));
  border-radius: 12px;
  text-align: center;
}
.bhg-summary__num {
  font-size: 1.2rem; font-weight: 800; color: var(--text-primary, #e7ecf5);
  font-variant-numeric: tabular-nums; line-height: 1.2;
}
.bhg-summary__num--ok { color: #34d399; }
.bhg-summary__num--warn { color: #fbbf24; }
.bhg-summary__num--err { color: #f87171; }
.bhg-summary__label { font-size: .68rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-tertiary, #64748b); font-weight: 600; margin-top: 2px; }

/* ── Result output ─────────────────────────────────────────── */
.bhg-output {
  position: relative;
}
.bhg-output__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}
.bhg-output__actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.bhg-output__code {
  background: var(--bg, #070b14);
  border: 1px solid var(--border, rgba(148,163,184,.16));
  border-radius: 12px;
  padding: 14px;
  font-family: 'Fira Code', 'Consolas', 'Courier New', monospace;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--text-primary, #e7ecf5);
  max-height: 480px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
.bhg-output__code .bhg-line-num {
  display: inline-block;
  width: 2.5em;
  text-align: right;
  margin-right: .8em;
  color: var(--text-tertiary, #64748b);
  user-select: none;
}

/* ── Preview ───────────────────────────────────────────────── */
.bhg-preview {
  border: 1px solid var(--border, rgba(148,163,184,.16));
  border-radius: 12px;
  padding: 16px;
  background: var(--surface, #0e1626);
  overflow-x: auto;
  min-height: 120px;
}
.bhg-preview a {
  color: var(--primary-light, #818cf8);
  text-decoration: underline;
  text-underline-offset: 2px;
  word-break: break-all;
}
.bhg-preview a:hover { color: var(--primary, #6366f1); }
.bhg-preview ul, .bhg-preview ol { padding-left: 1.5em; }
.bhg-preview li { margin-bottom: 4px; }
.bhg-preview p { margin: 0 0 8px; font-size: .85rem; color: var(--text-secondary, #9aa8bd); }

/* ── Advanced Link Options highlight ───────────────────────── */
#bhg-advanced {
  padding: 0;
  overflow: hidden;
  border-color: color-mix(in srgb, var(--primary, #6366f1) 35%, transparent);
  background: linear-gradient(180deg, color-mix(in srgb, var(--primary, #6366f1) 6%, transparent), var(--surface, #0e1626));
}
.bhg-advanced__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: .95rem;
  font-weight: 700;
  color: var(--primary-light, #818cf8);
  background: color-mix(in srgb, var(--primary, #6366f1) 10%, transparent);
}
.bhg-advanced__summary::-webkit-details-marker { display: none; }
.bhg-advanced__summary:hover { background: color-mix(in srgb, var(--primary, #6366f1) 16%, transparent); }
.bhg-advanced__summary:focus-visible { outline: 2px solid var(--accent, #22d3ee); outline-offset: 2px; }
.bhg-advanced__label { display: inline-flex; align-items: center; gap: 8px; }
.bhg-advanced__label svg { width: 16px; height: 16px; }
.bhg-advanced__chevron { transition: transform .2s; font-size: .7rem; color: var(--text-secondary, #9aa8bd); }
#bhg-advanced[open] .bhg-advanced__chevron { transform: rotate(180deg); }
#bhg-advanced[open] .bhg-advanced__summary { border-bottom: 1px solid var(--border, rgba(148,163,184,.16)); border-radius: 0; }
.bhg-advanced__body { padding: 18px; display: flex; flex-direction: column; gap: 1.1rem; }

/* ── Mode-specific options (shown when a mode is selected) ─── */
.bhg-mode-opts { display: none; margin-top: 12px; }
.bhg-mode-opts--active { display: block; }

/* ── Warning banner for large cartesian product ────────────── */
.bhg-bulk-warn { display: none; margin-top: 12px; }
.bhg-bulk-warn--active { display: block; }

/* ── Pairing strategy selector (for mode 3) ────────────────── */
.bhg-strategy { display: none; }
.bhg-strategy--active { display: flex; }

/* ── Result format cards ───────────────────────────────────── */
.bhg-format-stack { display: flex; flex-direction: column; gap: 1.5rem; }
.bhg-format-card {
  border: 1px solid var(--border, rgba(148,163,184,.16));
  border-radius: 14px;
  overflow: hidden;
  background: var(--surface, #0e1626);
}
.bhg-format-card__head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 12px 14px;
  background: var(--bg-secondary, #0b1120);
  border-bottom: 1px solid var(--border, rgba(148,163,184,.16));
}
.bhg-format-card__label { font-weight: 700; font-size: .92rem; color: var(--text-primary, #e7ecf5); }
.bhg-format-card__count { font-size: .75rem; font-weight: 600; color: var(--text-tertiary, #64748b); }
.bhg-format-card__actions { margin-left: auto; display: flex; gap: 6px; flex-wrap: wrap; }
.bhg-format-card .bhg-output__code {
  border: none;
  border-radius: 0;
  margin: 0;
  max-height: 420px;
}

/* ── Hyperlink card ────────────────────────────────────────── */
.bhg-hyperlink-card { margin-top: 0; }

/* ── Format selector — wraps cleanly on small screens ──────── */
.bhg-seg-wrap { display: flex; flex-wrap: wrap; gap: 6px; }
.bhg-seg-wrap .tk-seg { flex-wrap: wrap; }
.bhg-seg-wrap .tk-seg button { padding: 8px 14px; }

/* ── Feature cards (What Can This Tool Generate?) ──────────── */
.bhg-features { grid-template-columns: repeat(2, 1fr); }
.bhg-features li { flex-direction: column; align-items: stretch; gap: 8px; min-width: 0; }
.bhg-features li > span { margin-top: 0; }
.bhg-features li .bhg-feature-body { min-width: 0; flex: 1; }
.bhg-features li .bhg-feature-body p { margin: 4px 0 0; font-size: .88rem; line-height: 1.6; color: var(--text-secondary, #9aa8bd); }
.bhg-features li code {
  display: inline-block;
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
  margin-top: 6px;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 900px) {
  .bhg-modes { grid-template-columns: 1fr; }
  .bhg-summary { grid-template-columns: repeat(2, 1fr); }
  .bhg-output__meta { flex-direction: column; align-items: stretch; }
  .bhg-output__actions { justify-content: center; }
  .bhg-features { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .bhg-advanced__body .tk-grid { grid-template-columns: 1fr !important; }
}
@media (max-width: 480px) {
  .bhg-format-card__actions { margin-left: 0; width: 100%; justify-content: flex-end; }
  .bhg-summary { grid-template-columns: repeat(2, 1fr); }
}