/* ==========================================================================
   Trainee Exam Portal Layout & Component Styling (exam.css)
   ========================================================================== */

/* Welcome / Candidate Registration View */
.registration-box {
  max-width: 540px;
  margin: 3rem auto;
  text-align: center;
}

.reg-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: inline-block;
  background: rgba(0, 229, 255, 0.1);
  padding: 1rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 229, 255, 0.3);
}

.reg-title {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.reg-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.exam-meta-pills {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.meta-pill {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.meta-pill strong {
  color: var(--primary);
}

/* Exam Active Interface Layout */
.exam-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 1.75rem;
  align-items: start;
}

@media (max-width: 900px) {
  .exam-layout {
    grid-template-columns: 1fr;
  }
}

/* Timer & Sticky Top Bar */
.exam-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  background: rgba(18, 25, 41, 0.6);
  padding: 0.8rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.timer-box {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(0, 229, 255, 0.1);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(0, 229, 255, 0.3);
}

.timer-box.warning {
  color: var(--warning);
  background: rgba(245, 158, 11, 0.15);
  border-color: var(--warning);
  animation: pulseGlow 1.5s infinite;
}

.timer-box.danger {
  color: var(--danger);
  background: rgba(239, 68, 68, 0.2);
  border-color: var(--danger);
  animation: pulseGlow 0.8s infinite;
}

/* Question Box */
.question-card {
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.question-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.question-number {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
}

.question-text {
  font-size: 1.15rem;
  line-height: 1.5;
  color: #ffffff;
  margin-bottom: 1.5rem;
  font-weight: 500;
}

/* Options Container */
.options-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 2rem;
}

.option-item {
  display: flex;
  align-items: center;
  padding: 0.9rem 1.2rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  user-select: none;
}

.option-item:hover {
  background: rgba(0, 229, 255, 0.05);
  border-color: rgba(0, 229, 255, 0.4);
}

.option-item.selected {
  background: rgba(0, 229, 255, 0.12);
  border-color: var(--primary);
  box-shadow: 0 0 12px var(--primary-glow);
}

.option-item.correct-answer {
  background: rgba(16, 185, 129, 0.2);
  border-color: var(--success);
  color: #ffffff;
}

.option-item.wrong-answer {
  background: rgba(239, 68, 68, 0.2);
  border-color: var(--danger);
  color: #ffffff;
}

.option-key {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  margin-right: 1rem;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: var(--transition-fast);
}

.option-item.selected .option-key {
  background: var(--primary);
  color: #040912;
}

.option-label {
  font-size: 0.95rem;
  flex: 1;
}

/* Exam Action Buttons Footer */
.question-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

.flag-btn {
  background: transparent;
  border: 1px solid var(--warning);
  color: var(--warning);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition-fast);
}

.flag-btn.flagged {
  background: var(--warning);
  color: #000000;
}

/* Question Navigator Grid Sidebar */
.nav-sidebar {
  position: sticky;
  top: 90px;
}

.grid-title {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.question-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.grid-num {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
  position: relative;
}

.grid-num:hover {
  border-color: var(--primary);
  color: #ffffff;
}

.grid-num.current {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
  transform: scale(1.05);
}

.grid-num.answered {
  background: rgba(99, 102, 241, 0.25);
  border-color: var(--secondary);
  color: #ffffff;
}

.grid-num.flagged::after {
  content: '★';
  position: absolute;
  top: -3px;
  right: 1px;
  font-size: 0.75rem;
  color: var(--warning);
}

.grid-legend {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

/* Exam Result View */
.result-header {
  text-align: center;
  margin-bottom: 2rem;
}

.score-badge-circle {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, rgba(18, 26, 44, 0.8) 100%);
  border: 3px solid var(--success);
  box-shadow: 0 0 30px var(--success-glow);
}

.score-badge-circle.failed {
  background: radial-gradient(circle, rgba(239, 68, 68, 0.15) 0%, rgba(18, 26, 44, 0.8) 100%);
  border-color: var(--danger);
  box-shadow: 0 0 30px var(--danger-glow);
}

.score-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  color: #ffffff;
}

.score-total {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.result-status {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.result-status.passed {
  color: var(--success);
}

.result-status.failed {
  color: var(--danger);
}

.topic-breakdown {
  margin: 2rem 0;
}

.topic-row {
  margin-bottom: 1rem;
}

.topic-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
}

.topic-bar-bg {
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.topic-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
}

/* Explanation Box in Review */
.explanation-box {
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  background: rgba(59, 130, 246, 0.1);
  border-left: 4px solid var(--info);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.9rem;
  color: #cbd5e1;
}

/* ==========================================================================
   Responsive Media Queries for Trainee Exam Module
   ========================================================================== */

@media (max-width: 768px) {
  .registration-box {
    margin: 1rem auto;
    padding: 1.25rem 1rem;
  }

  .reg-title {
    font-size: 1.35rem;
  }

  .reg-desc {
    font-size: 0.85rem;
    margin-bottom: 1.25rem;
  }

  .exam-meta-pills {
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.25rem;
  }

  .meta-pill {
    font-size: 0.78rem;
    padding: 0.3rem 0.75rem;
    flex: 1;
    min-width: 120px;
    justify-content: center;
  }

  .exam-topbar {
    padding: 0.6rem 0.85rem;
    margin-bottom: 1rem;
  }

  .timer-box {
    font-size: 1rem;
    padding: 0.25rem 0.65rem;
  }

  .question-card {
    min-height: auto;
    padding: 1.25rem 1rem;
  }

  .question-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 1rem;
  }

  .flag-btn {
    align-self: flex-end;
    padding: 0.35rem 0.75rem;
    font-size: 0.78rem;
  }

  .question-text {
    font-size: 1rem;
    margin-bottom: 1.25rem;
    line-height: 1.5;
  }

  .options-list {
    gap: 0.65rem;
    margin-bottom: 1.5rem;
  }

  .option-item {
    padding: 0.75rem 0.85rem;
    min-height: 48px;
  }

  .option-key {
    width: 28px;
    height: 28px;
    font-size: 0.8rem;
    margin-right: 0.75rem;
  }

  .option-label {
    font-size: 0.88rem;
  }

  .question-footer {
    flex-direction: column-reverse;
    gap: 0.85rem;
    align-items: stretch;
  }

  .question-footer > div {
    display: flex;
    gap: 0.5rem;
    width: 100%;
  }

  .question-footer button {
    flex: 1;
    justify-content: center;
  }

  .nav-sidebar {
    position: static;
    margin-top: 1rem;
  }

  .question-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 0.5rem;
  }

  .grid-num {
    font-size: 0.8rem;
  }

  .score-badge-circle {
    width: 110px;
    height: 110px;
    margin-bottom: 1rem;
  }

  .score-number {
    font-size: 1.8rem;
  }

  .result-status {
    font-size: 1.2rem;
  }
}

@media (max-width: 480px) {
  .question-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}