/* Shared MCQ module styles (Question Bank, Practice Mode, Bookmarks) */

:root {
  --light-correct-answer-bg: rgba(100, 255, 100, 0.2);
  --light-wrong-answer-bg: rgba(255, 100, 100, 0.2);
  --dark-correct-border: #28a745;
  --dark-wrong-border: #dc3545;
}

/* MCQ shell — panel scroll only (header/footer stay fixed) */
.oe-app[data-variant="mcq"] .oe-main {
  /* Height comes from measured chrome vars; ensure flex shrink works */
  min-height: 0;
}

.oe-app[data-variant="mcq"] .oe-main__scroll {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: clamp(0.5rem, 1.5vw, var(--oe-content-pad));
  min-height: 0;
}

.oe-app[data-variant="mcq"] .oe-main__inner {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.oe-mcq-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.oe-mcq-controls .oe-input,
.oe-mcq-controls .oe-select-field,
.oe-mcq-controls .oe-select {
  flex: 1 1 auto;
  min-width: 50px;
  max-width: 160px;
  font-size: clamp(0.75rem, 2vw, 0.9rem);
}

.oe-mcq-controls .oe-select-field > .oe-select {
  padding-right: 2.75rem;
}

.oe-mcq-controls .oe-input--search {
  max-width: 150px;
}

.oe-mcq-icon-group {
  display: flex;
  gap: 8px;
  flex-wrap: nowrap;
}

.oe-mcq-reset-btn {
  display: none;
  align-items: center;
  gap: 0.35rem;
  padding: 0 0.75rem;
  min-height: 44px;
  border-radius: 10px;
  border: 1px solid var(--error-color);
  background: color-mix(in srgb, var(--error-color) 12%, transparent);
  color: var(--error-color);
  font-size: clamp(0.72rem, 2vw, 0.85rem);
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background 0.2s ease, transform 0.15s ease;
}

.oe-mcq-reset-btn:not([hidden]) {
  display: inline-flex;
}

.oe-mcq-reset-btn:hover {
  background: color-mix(in srgb, var(--error-color) 22%, transparent);
  transform: translateY(-1px);
}

.oe-mcq-reset-btn i {
  font-size: 0.85em;
}

@media (max-width: 768px) {
  .oe-mcq-reset-btn {
    display: none !important;
  }
}

.oe-questions-panel {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  background: var(--glass-card-bg);
  border: 1px solid var(--glass-card-border);
  border-radius: 16px;
  padding: clamp(1rem, 2vw, 1.25rem);
  overflow: hidden;
  box-shadow: var(--oe-shadow-sm, 0 2px 8px -2px rgba(0, 0, 0, 0.12));
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
}

.oe-questions-panel__scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none;  /* IE and Edge */
  padding-bottom: 0.75rem;
}

.oe-questions-panel__scroll::-webkit-scrollbar {
  display: none; /* Chrome, Safari and Opera */
}

.oe-question-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: linear-gradient(to right, var(--accent-gradient-start), var(--accent-gradient-end));
  color: var(--button-text);
  font-weight: 600;
  border-radius: 12px;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.oe-study-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 15px;
  position: relative;
  margin-bottom: 1.25rem;
}

.oe-questions-panel__scroll .oe-study-card:last-child {
  margin-bottom: 0.25rem;
}

.oe-study-card__bookmark {
  position: absolute;
  top: 15px;
  right: 15px;
  background: none;
  border: none;
  color: var(--button-bg);
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
}

.oe-study-card__title {
  font-weight: bold;
  margin-bottom: 1rem;
  margin-right: 2.5rem;
  line-height: 1.5;
}

.oe-options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.oe-option-btn {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 15px;
  border-radius: 8px;
  border: 1px solid var(--card-border);
  background: transparent;
  color: var(--text-color);
  text-align: left;
  line-height: 1.4;
  min-height: 44px;
}

.oe-option-btn--correct {
  background: var(--light-correct-answer-bg) !important;
  border: 2px solid var(--dark-correct-border) !important;
}

.oe-option-btn__marker {
  width: 25px;
  height: 25px;
  min-width: 25px;
  border-radius: 50%;
  background: var(--button-bg);
  color: var(--button-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}

.oe-explanation {
  background: var(--option-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 10px;
  margin-top: 1rem;
  font-size: 0.95rem;
  line-height: 1.6;
}

.oe-teaching-pearl {
  background: var(--option-hover-bg);
  border: 1px solid var(--accent-color);
  border-radius: 8px;
  padding: 15px 15px 15px 50px;
  margin-top: 1rem;
  position: relative;
}

.oe-teaching-pearl::before {
  content: '\f0eb';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  color: var(--accent-color);
  position: absolute;
  left: 15px;
  top: 15px;
}

.oe-mcq-img {
  max-width: 100%;
  border-radius: 8px;
  margin: 0.5rem 0;
  cursor: zoom-in;
}

#oe-image-viewer {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2900;
  background: var(--modal-bg);
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

#oe-image-viewer.is-open {
  display: flex;
}

#oe-image-viewer img {
  max-width: 90vw;
  max-height: 80dvh;
  cursor: grab;
}

.oe-bookmark-list {
  list-style: none;
  padding: 0;
}

.oe-bookmark-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 15px;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: pointer;
}

.oe-bookmark-item:hover {
  background: var(--option-hover-bg);
}

@media (max-width: 768px) {
  .oe-mcq-controls {
    display: none;
  }

  .oe-questions-panel {
    border-radius: 12px;
    padding: 0.85rem;
  }

  .oe-question-info {
    padding: 10px 14px;
    font-size: 0.9rem;
    border-radius: 10px;
  }

  .oe-study-card {
    padding: 12px;
    margin-bottom: 1rem;
  }

  .oe-study-card__title {
    font-size: 0.95rem;
    margin-right: 3.5rem;
    word-break: break-word;
  }

  .oe-study-card__bookmark,
  .oe-study-card__report {
    min-width: 44px;
    min-height: 44px;
  }

  .oe-option-btn {
    padding: 10px 12px;
    font-size: 0.92rem;
  }

  .oe-explanation,
  .oe-teaching-pearl {
    font-size: 0.9rem;
  }

  .oe-teaching-pearl {
    padding: 12px 12px 12px 44px;
  }

  .oe-footer {
    padding-top: 0.5rem;
  }

  .oe-pagination__btn {
    min-width: 48px;
    min-height: 48px;
  }

  .oe-pagination__pages {
    max-width: calc(100vw - 8rem);
  }
}

/* iPad portrait – slightly roomier cards */
@media (min-width: 769px) and (max-width: 1024px) {
  .oe-app[data-variant="mcq"] .oe-main__scroll {
    padding: 0.65rem clamp(0.65rem, 2vw, 1rem);
  }

  .oe-questions-panel {
    padding: 1rem;
  }
}

/* Tablet / narrow desktop — header controls visible, footer pagination + copyright stack */
@media (min-width: 769px) and (max-width: 1023px) {
  .oe-app[data-variant="mcq"] .oe-main__scroll {
    padding: 0.5rem clamp(0.5rem, 2vw, 0.75rem);
  }

  .oe-app[data-variant="mcq"] .oe-questions-panel {
    padding: clamp(0.75rem, 1.5vw, 1rem);
    border-radius: 14px;
  }
}

/* --- Desktop: wider question area + full-width pagination --- */
@media (min-width: 1024px) {
  .oe-app[data-variant="mcq"] {
    --oe-content-max: min(98vw, 1760px);
    --oe-content-pad: clamp(0.5rem, 1.2vw, 1rem);
  }

  .oe-app[data-variant="mcq"] .oe-main__scroll {
    padding: var(--oe-content-pad) clamp(0.75rem, 1.5vw, 1.25rem);
  }

  .oe-app[data-variant="mcq"] .oe-questions-panel {
    padding: clamp(1.25rem, 2vw, 2rem);
    border-radius: 20px;
  }

  .oe-app[data-variant="mcq"] .oe-study-card {
    padding: clamp(1.25rem, 2vw, 2rem);
    margin-bottom: 1.5rem;
  }

  .oe-app[data-variant="mcq"] .oe-study-card__title {
    font-size: clamp(1.05rem, 1.4vw, 1.25rem);
    line-height: 1.55;
  }

  .oe-app[data-variant="mcq"] .oe-explanation,
  .oe-app[data-variant="mcq"] .oe-option-btn {
    font-size: 1rem;
    line-height: 1.55;
  }

  .oe-app[data-variant="mcq"] .oe-footer__inner {
    max-width: none;
    width: 100%;
  }

  .oe-app[data-variant="mcq"] .oe-pagination {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1rem;
    width: 100%;
  }

  .oe-app[data-variant="mcq"] .oe-pagination__pages {
    max-width: none;
    min-width: 0;
    flex-wrap: nowrap;
    justify-content: flex-start;
  }

  .oe-app[data-variant="mcq"] .oe-pagination__btn {
    min-width: 42px;
    min-height: 42px;
  }
}