/* ==========================================================================
   ATPL CBT Exam Mode Styling
   ========================================================================== */

.cbt-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
}

/* CBT Top Bar: Status, Subject, Timer */
.cbt-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.25rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.cbt-info-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.cbt-exam-badge {
  background-color: var(--accent-blue);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.cbt-subject-name {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
}

.cbt-q-counter {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-secondary);
}
.cbt-q-counter b {
  color: var(--accent-cyan);
}

/* CBT Countdown Timer */
.cbt-timer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.4);
}

.cbt-timer.warning {
  color: var(--accent-amber);
  border-color: var(--accent-amber);
  animation: pulseWarning 1.5s infinite;
}

.cbt-timer.danger {
  color: var(--accent-red);
  border-color: var(--accent-red);
  animation: pulseDanger 1s infinite;
}

@keyframes pulseWarning {
  0%, 100% { box-shadow: 0 0 4px rgba(245, 158, 11, 0.3); }
  50% { box-shadow: 0 0 12px rgba(245, 158, 11, 0.6); }
}

@keyframes pulseDanger {
  0%, 100% { box-shadow: 0 0 6px rgba(239, 68, 68, 0.4); }
  50% { box-shadow: 0 0 16px rgba(239, 68, 68, 0.8); }
}

/* CBT Grid Palette */
.cbt-grid-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
}

.cbt-grid-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.65rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.cbt-legend {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
}
.legend-dot.unanswered {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
}
.legend-dot.answered {
  background-color: var(--accent-blue);
}
.legend-dot.flagged {
  background-color: var(--accent-amber);
}

.cbt-question-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
  gap: 6px;
  max-height: 130px;
  overflow-y: auto;
  padding: 2px;
}

.grid-q-btn {
  height: 36px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface);
  border: 1.5px solid var(--border-strong);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all 0.15s ease;
}

.grid-q-btn:hover {
  background-color: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--accent-cyan);
}

.grid-q-btn.answered {
  background-color: rgba(2, 132, 199, 0.25);
  border-color: var(--accent-blue);
  color: #38bdf8;
}

.grid-q-btn.flagged::after {
  content: '';
  position: absolute;
  top: 2px;
  right: 2px;
  width: 7px;
  height: 7px;
  background-color: var(--accent-amber);
  border-radius: 50%;
  box-shadow: 0 0 4px var(--accent-amber);
}

.grid-q-btn.current {
  border-color: #ffffff;
  color: #ffffff;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.4);
  transform: scale(1.05);
}

/* CBT Navigation Footer */
.cbt-nav-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

/* Result Screen */
.result-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem 1.5rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  gap: 1.5rem;
  max-width: 700px;
  margin: 0 auto;
  width: 100%;
}

.result-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.5rem;
  border-radius: var(--radius-full);
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 1px;
}

.result-badge.pass {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  border: 2px solid var(--accent-green);
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.result-badge.fail {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
  border: 2px solid var(--accent-red);
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

.score-display {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  font-family: var(--font-mono);
}

.score-num {
  font-size: 4rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1;
}

.score-unit {
  font-size: 1.5rem;
  color: var(--text-secondary);
}

.result-progress-bar {
  width: 100%;
  height: 12px;
  background-color: var(--bg-surface);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
  border: 1px solid var(--border-subtle);
}

.result-progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
}
.result-progress-fill.pass {
  background: linear-gradient(90deg, #10b981, #34d399);
}
.result-progress-fill.fail {
  background: linear-gradient(90deg, #ef4444, #f87171);
}

.threshold-marker {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 70%;
  width: 2px;
  background-color: #ffffff;
  z-index: 2;
}

.threshold-marker::after {
  content: '合格70%';
  position: absolute;
  top: -18px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.65rem;
  font-weight: 800;
  color: #ffffff;
  white-space: nowrap;
}

.result-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  width: 100%;
}

.stat-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.stat-val {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
}

/* ==========================================================================
   Mobile Optimization for CBT Mode (1-Screen Fit)
   ========================================================================== */
@media (max-width: 768px) {
  .cbt-container {
    gap: 0.5rem;
  }

  .cbt-topbar {
    padding: 0.45rem 0.65rem;
    gap: 0.4rem;
  }

  .cbt-exam-badge {
    font-size: 0.65rem;
    padding: 2px 5px;
  }

  .cbt-subject-name {
    font-size: 0.9rem;
  }

  .cbt-q-counter {
    font-size: 0.8rem;
  }

  .cbt-timer {
    font-size: 0.95rem;
    padding: 0.2rem 0.5rem;
    gap: 0.3rem;
  }

  /* 問題パレットを縦130pxの巨大グリッドから、横1行のスライダーに変換 */
  .cbt-grid-card {
    padding: 0.4rem 0.6rem;
  }

  .cbt-grid-header {
    margin-bottom: 0.35rem;
    font-size: 0.72rem;
  }

  .cbt-legend {
    gap: 0.45rem;
    font-size: 0.7rem;
  }

  .cbt-question-grid {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    gap: 4px;
    max-height: 38px;
    padding: 2px 1px 4px 1px;
    -webkit-overflow-scrolling: touch;
  }

  .grid-q-btn {
    min-width: 32px;
    max-width: 32px;
    height: 30px;
    font-size: 0.75rem;
    flex-shrink: 0;
  }

  /* リザルト画面 */
  .result-container {
    padding: 1.25rem 0.8rem;
    gap: 1rem;
  }

  .score-num {
    font-size: 3rem;
  }

  .result-stats-grid {
    gap: 0.5rem;
  }

  .stat-box {
    padding: 0.6rem;
  }
}