/* ===========================================================================
   Scottish Science Society — Members' Question Bank
   Builds on css/members.css (navy, gold, cream; serif-led).
   =========================================================================== */

.qb-disclaimer {
  margin-top: 1.1rem;
  line-height: 1.55;
}

/* Filters */
.qb-controls {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr auto;
  gap: 1rem;
  align-items: end;
}

.qb-controls .form-field { margin-bottom: 0; }

.qb-control-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* Question + palette */
.qb-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 1.5rem;
  align-items: start;
}

.qb-main { margin-bottom: 1.75rem; }

.qb-meta {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--light-text);
  margin: 0 0 0.75rem;
}

.qb-flag-mark { color: var(--warning-color); font-weight: bold; }

.qb-stem {
  font-size: 1.12rem;
  line-height: 1.65;
  color: var(--text-color);
  margin: 0 0 1.25rem;
}

.qb-options {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-bottom: 1rem;
}

.qb-option {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  text-align: left;
  width: 100%;
  font-family: 'Baskerville', 'Times New Roman', Times, serif;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--text-color);
  background-color: #fff;
  border: 1px solid var(--border-color);
  border-radius: 2px;
  padding: 0.7rem 0.9rem;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.qb-option:hover:not(:disabled) {
  border-color: var(--accent-color);
  background-color: rgba(212, 185, 110, 0.1);
}

.qb-option:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

.qb-option:disabled { cursor: default; }

.qb-letter {
  flex: 0 0 auto;
  width: 1.7rem;
  height: 1.7rem;
  line-height: 1.6rem;
  text-align: center;
  border: 1px solid var(--primary-color);
  border-radius: 50%;
  font-family: 'Garamond', 'Georgia', serif;
  font-weight: bold;
  color: var(--primary-color);
}

.qb-option.is-answer {
  border-color: var(--success-color);
  background-color: #f1f7f3;
}

.qb-option.is-answer .qb-letter {
  background-color: var(--success-color);
  border-color: var(--success-color);
  color: #fff;
}

.qb-option.is-chosen-wrong {
  border-color: var(--danger-color);
  background-color: #fbf3f3;
}

.qb-option.is-chosen-wrong .qb-letter {
  background-color: var(--danger-color);
  border-color: var(--danger-color);
  color: #fff;
}

/* Explanation */
.qb-explanation {
  border-top: 1px solid var(--border-color);
  margin-top: 1.25rem;
  padding-top: 1rem;
}

.qb-explanation h4 {
  color: var(--primary-color);
  font-size: 1rem;
  margin: 1.2rem 0 0.4rem;
}

.qb-explanation p,
.qb-alternatives li {
  line-height: 1.6;
}

.qb-verdict {
  padding: 0.75rem 1rem;
  border-left: 3px solid;
  font-size: 1.02rem;
}

.qb-verdict-right { border-left-color: var(--success-color); background-color: #f1f7f3; color: #24523a; }
.qb-verdict-wrong { border-left-color: var(--danger-color); background-color: #fbf3f3; color: #7a2828; }

.qb-alternatives {
  padding-left: 1.1rem;
  margin: 0;
}

.qb-alternatives li { margin-bottom: 0.45rem; }

.qb-alt-chosen {
  background-color: #fbf3f3;
  padding: 0.2rem 0.4rem;
  margin-left: -0.4rem;
}

.qb-reference { font-size: 0.92rem; color: var(--light-text); }

.qb-retry { margin-top: 1rem; font-size: 0.9rem; }

.qb-figures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.qb-figure {
  margin: 0;
  background-color: var(--panel-tint);
  border: 1px solid var(--border-color);
  padding: 0.6rem;
}

.qb-figure img {
  display: block;
  width: 100%;
  height: auto;
  background-color: #fff;
}

.qb-figure figcaption {
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--text-color);
  margin-top: 0.55rem;
}

.qb-credit {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.78rem;
  color: var(--light-text);
}

/* Navigation */
.qb-nav {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--border-color);
  margin-top: 1.5rem;
  padding-top: 1rem;
}

.qb-position {
  flex: 1 1 auto;
  text-align: center;
  font-size: 0.88rem;
  color: var(--light-text);
}

.qb-nav .btn:disabled {
  opacity: 0.45;
  cursor: default;
}

/* Palette */
.qb-side > h3:first-child { font-size: 1.15rem; }

.qb-side { position: sticky; top: 1rem; }

.qb-palette {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(2.4rem, 1fr));
  gap: 0.3rem;
  max-height: 420px;
  overflow-y: auto;
  padding: 2px;
}

.qb-cell {
  font-family: 'Garamond', 'Georgia', serif;
  font-size: 0.82rem;
  padding: 0.35rem 0;
  border: 1px solid var(--border-color);
  background-color: #fff;
  color: var(--primary-color);
  cursor: pointer;
  border-radius: 2px;
  position: relative;
}

.qb-cell:hover { border-color: var(--accent-color); }
.qb-cell:focus-visible { outline: 2px solid var(--accent-color); outline-offset: 1px; }
.qb-cell.is-correct { background-color: #e3f0e7; border-color: #a9cdb4; }
.qb-cell.is-wrong { background-color: #f6e3e3; border-color: #ddb0b0; }
.qb-cell.is-flagged::after {
  content: '';
  position: absolute;
  top: 2px;
  right: 2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--warning-color);
}
.qb-cell.is-current {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: #f0e6d0;
}

.qb-key {
  display: inline-block;
  width: 0.8rem;
  height: 0.8rem;
  border: 1px solid var(--border-color);
  vertical-align: -1px;
}

.qb-key-correct { background-color: #e3f0e7; border-color: #a9cdb4; }
.qb-key-wrong { background-color: #f6e3e3; border-color: #ddb0b0; }
.qb-key-flagged { background-color: var(--warning-color); border-radius: 50%; width: 0.5rem; height: 0.5rem; border: none; }

@media (max-width: 900px) {
  .qb-controls { grid-template-columns: 1fr 1fr; }
  .qb-layout { grid-template-columns: 1fr; }
  .qb-side { position: static; }
}

@media (max-width: 560px) {
  .qb-controls { grid-template-columns: 1fr; }
  .qb-position { order: -1; flex-basis: 100%; }
}