/* ═══════════════════════════════════════════
   Interview Question Bank — app styles
   Inherits tokens from ../style.css
   ═══════════════════════════════════════════ */

.qb-header {
  text-align: center;
  padding: 48px 24px 24px;
  border-bottom: 1px solid var(--color-border-light);
}
.qb-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 900;
  color: var(--color-ink);
  letter-spacing: -0.01em;
}
.qb-subtitle {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-light-muted);
  margin-top: 8px;
}
.qb-subtitle strong, .qb-subtitle span { color: var(--color-gold-dark); font-weight: 600; }

.qb-shell {
  display: grid;
  grid-template-columns: 280px 1fr 320px;
  gap: 24px;
  padding: 24px clamp(16px, 3vw, 40px);
  max-width: 1600px;
  margin: 0 auto;
  align-items: start;
}

/* ─── Filters ─── */
.qb-filters {
  background: var(--color-cream);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 16px;
  position: sticky;
  top: 16px;
  max-height: calc(100vh - 32px);
  overflow-y: auto;
}
.qb-filter-block { margin-bottom: 18px; }
.qb-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
  display: block;
  margin-bottom: 8px;
}
.qb-label-row { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 6px; }
.qb-label-row .qb-label { margin-bottom: 0; }
.qb-label-row input { flex: 1; max-width: 130px; padding: 4px 6px; font-size: 12px; }

.qb-filters input[type="search"] {
  width: 100%;
  padding: 8px 10px;
  font-family: var(--font-body);
  font-size: 14px;
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: 3px;
}
.qb-filters input[type="search"]:focus {
  outline: 2px solid var(--color-gold-light);
  border-color: var(--color-gold);
}

.qb-chip-list { display: flex; flex-wrap: wrap; gap: 6px; }
.qb-chip {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: 999px;
  cursor: pointer;
  color: var(--color-muted);
  text-transform: uppercase;
  transition: all 0.15s;
}
.qb-chip:hover { border-color: var(--color-gold); color: var(--color-gold-dark); }
.qb-chip.is-active {
  background: var(--color-gold-dark);
  color: #fff;
  border-color: var(--color-gold-dark);
}
.qb-chip .qb-chip-count { opacity: 0.7; margin-left: 4px; }

.qb-checkbox-list {
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--color-border-light);
  background: #fff;
  border-radius: 3px;
  padding: 6px 8px;
  font-size: 13px;
}
.qb-checkbox-list label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 3px 0;
  cursor: pointer;
  color: var(--color-muted);
}
.qb-checkbox-list label:hover { color: var(--color-gold-dark); }
.qb-checkbox-list .qb-fcount {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-light-muted);
}

.qb-clear-btn {
  width: 100%;
  padding: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  border-radius: 3px;
  cursor: pointer;
}
.qb-clear-btn:hover { background: var(--color-rust); color: #fff; border-color: var(--color-rust); }

/* ─── Results ─── */
.qb-results { min-width: 0; }
.qb-toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  background: var(--color-cream);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.qb-result-count { font-family: var(--font-mono); font-size: 13px; color: var(--color-muted); }
.qb-result-count strong { color: var(--color-gold-dark); font-size: 16px; }
.qb-sort { margin-left: auto; display: flex; align-items: center; gap: 8px; font-size: 13px; }
.qb-sort label { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; color: var(--color-muted); }
.qb-sort select {
  padding: 4px 8px;
  font-family: var(--font-body);
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: 3px;
}
.qb-bulk button, .qb-pager button, .qb-set-actions button {
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--color-gold-dark);
  color: #fff;
  border: none;
  border-radius: 3px;
  cursor: pointer;
}
.qb-bulk button:hover, .qb-pager button:hover, .qb-set-actions button:hover {
  background: var(--color-gold);
}
.qb-set-actions .qb-danger { background: var(--color-rust); }
.qb-set-actions .qb-danger:hover { background: #a83a1f; }

.qb-list { display: flex; flex-direction: column; gap: 10px; }

/* ─── Card ─── */
.qb-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 14px 16px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.qb-card:hover { border-color: var(--color-gold); box-shadow: 0 2px 8px rgba(26,79,138,0.08); }
.qb-card.is-selected { border-color: var(--color-gold-dark); background: #f4f8fc; }
.qb-card-head {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.qb-check { display: inline-flex; align-items: center; padding-top: 4px; cursor: pointer; }
.qb-check input { width: 16px; height: 16px; cursor: pointer; accent-color: var(--color-gold-dark); }
.qb-card-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  flex: 1;
  margin: 0;
  line-height: 1.3;
}
.qb-card-diff {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 999px;
  white-space: nowrap;
}
.qb-card-diff.diff-easy   { background: #d4ecdc; color: #1f5c39; }
.qb-card-diff.diff-medium { background: #fbe4c4; color: #8a4d12; }
.qb-card-diff.diff-hard   { background: #f4cdc1; color: #6e2310; }
.qb-card-diff.diff-other  { background: var(--color-cream); color: var(--color-muted); }
.qb-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
  margin-left: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-light-muted);
}
.qb-meta-co::before { content: "🏢 "; opacity: 0.6; }
.qb-meta-type::before { content: "▸ "; color: var(--color-gold); }
.qb-meta-lang { text-transform: uppercase; letter-spacing: 0.08em; }

.qb-card-detail { margin-top: 10px; margin-left: 26px; }
.qb-card-detail summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gold-dark);
  padding: 4px 0;
  user-select: none;
}
.qb-detail-section { margin-top: 10px; }
.qb-detail-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-light-muted);
  margin-bottom: 4px;
}
.qb-detail-section pre {
  background: #1a2332;
  color: #e6edf3;
  padding: 12px 14px;
  border-radius: 3px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.55;
  white-space: pre;
}
.qb-detail-section.qb-schema pre { background: #243042; color: #d8e4ef; font-size: 12px; }
.qb-copy {
  margin-top: 6px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  cursor: pointer;
  color: var(--color-muted);
}
.qb-copy:hover { background: var(--color-gold-dark); color: #fff; border-color: var(--color-gold-dark); }
.qb-detail-actions { margin-top: 10px; }
.qb-open-playground {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-gold-dark);
  text-decoration: none;
  border-bottom: 1px dashed var(--color-gold);
}
.qb-open-playground:hover { color: var(--color-rust); border-color: var(--color-rust); }

/* ─── Pager ─── */
.qb-pager {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-muted);
}
.qb-pager button:disabled { opacity: 0.4; cursor: not-allowed; }

/* ─── My Set ─── */
.qb-set {
  background: var(--color-cream);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 16px;
  position: sticky;
  top: 16px;
  max-height: calc(100vh - 32px);
  display: flex;
  flex-direction: column;
}
.qb-set-header h2 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-ink);
  display: flex;
  align-items: center;
  gap: 8px;
}
.qb-pill {
  background: var(--color-gold-dark);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 999px;
}
.qb-set-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 12px 0;
}
.qb-set-list {
  list-style: none;
  padding: 0;
  margin: 0;
  overflow-y: auto;
  flex: 1;
  border-top: 1px solid var(--color-border-light);
  padding-top: 8px;
}
.qb-set-list li {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  padding: 6px 4px;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 13px;
}
.qb-set-list li .qb-set-title {
  flex: 1;
  color: var(--color-ink);
  font-weight: 500;
  line-height: 1.35;
}
.qb-set-list li .qb-set-meta {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  color: var(--color-light-muted);
  letter-spacing: 0.08em;
  margin-top: 2px;
}
.qb-set-remove {
  background: transparent;
  border: none;
  color: var(--color-rust);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 0 4px;
}
.qb-set-empty {
  color: var(--color-light-muted);
  font-style: italic;
  padding: 12px 0;
  text-align: center;
}
.qb-set-hint {
  margin-top: 10px;
  font-size: 11px;
  color: var(--color-light-muted);
  font-family: var(--font-mono);
  line-height: 1.5;
}

.qb-footer {
  text-align: center;
  padding: 32px 16px;
  color: var(--color-light-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  border-top: 1px solid var(--color-border-light);
  margin-top: 32px;
}
.qb-footer code { background: var(--color-cream); padding: 1px 5px; border-radius: 2px; }

/* ─── Responsive ─── */
@media (max-width: 1100px) {
  .qb-shell { grid-template-columns: 240px 1fr; }
  .qb-set {
    grid-column: 1 / -1;
    position: static;
    max-height: none;
  }
  .qb-set-list { max-height: 280px; }
}
@media (max-width: 760px) {
  .qb-shell { grid-template-columns: 1fr; padding: 16px; }
  .qb-filters, .qb-set { position: static; max-height: none; }
}

/* Print view */
@media print {
  .top-bar, .qb-filters, .qb-set, .qb-toolbar, .qb-pager, .qb-footer, .page-frame, body::before { display: none !important; }
  .qb-shell { grid-template-columns: 1fr; }
  .qb-card { break-inside: avoid; border: 1px solid #aaa; box-shadow: none; }
  .qb-card-detail[open] { display: block; }
}