/* iOS 18 Component Library */

/* Container Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
}

.container-narrow {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
}

/* Page Headers */
.page-title {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -1px;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.page-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: var(--spacing-xl);
  letter-spacing: -0.4px;
}

/* Form Components */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.3px;
}

.form-error {
  font-size: 14px;
  color: var(--ios-red);
  margin-top: var(--spacing-xs);
  letter-spacing: -0.2px;
}

/* Task Card - iOS 18 Style (NO side border) */
.task-card {
  background: var(--bg-primary);
  backdrop-filter: blur(60px) saturate(180%);
  -webkit-backdrop-filter: blur(60px) saturate(180%);
  border: 0.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.task-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.task-card:active {
  transform: scale(0.98);
}

.task-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-sm);
  gap: var(--spacing-md);
}

.task-title {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  line-height: 1.3;
}

.task-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  font-size: 15px;
  color: var(--text-tertiary);
  margin-top: var(--spacing-xs);
}

.task-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  letter-spacing: -0.3px;
}

.task-meta-item::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-tertiary);
}

.task-meta-item:first-child::before {
  display: none;
}

/* Question Card - iOS 18 Style (NO side border) */
.question-card {
  background: var(--bg-primary);
  backdrop-filter: blur(60px) saturate(180%);
  -webkit-backdrop-filter: blur(60px) saturate(180%);
  border: 0.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.question-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.question-number {
  font-size: 15px;
  font-weight: 600;
  color: var(--ios-blue);
  letter-spacing: -0.3px;
}

.question-text {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: var(--spacing-lg);
}

/* Options List - iOS 18 Style */
.options-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.option-item {
  background: var(--bg-secondary);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.option-item:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: var(--ios-blue);
  transform: scale(1.01);
}

.option-item:active {
  transform: scale(0.99);
}

.option-item.selected {
  background: rgba(0, 122, 255, 0.1);
  border-color: var(--ios-blue);
  border-width: 2px;
}

.option-label {
  font-weight: 600;
  color: var(--ios-blue);
  min-width: 28px;
  font-size: 17px;
  letter-spacing: -0.4px;
}

.option-text {
  flex: 1;
  font-size: 17px;
  color: var(--text-primary);
  letter-spacing: -0.4px;
  line-height: 1.4;
}

/* Timer Display - iOS 18 Style */
.timer-display {
  background: var(--bg-primary);
  backdrop-filter: blur(60px) saturate(180%);
  -webkit-backdrop-filter: blur(60px) saturate(180%);
  border: 0.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  text-align: center;
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 1000;
  box-shadow: var(--shadow-md);
}

.timer-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-tertiary);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.timer-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
  letter-spacing: -1px;
}

.timer-warning {
  color: var(--ios-orange);
}

.timer-danger {
  color: var(--ios-red);
  animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* Progress Bar - iOS 18 Style */
.progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(0, 0, 0, 0.08);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
}

.progress-fill {
  height: 100%;
  background: var(--ios-blue);
  border-radius: 3px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Navigation Bar - iOS 18 Style */
.navbar {
  background: var(--bg-primary);
  backdrop-filter: blur(60px) saturate(180%);
  -webkit-backdrop-filter: blur(60px) saturate(180%);
  border-bottom: 0.5px solid var(--border-color);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04);
}

.navbar-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.navbar-actions {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.user-info {
  font-size: 15px;
  color: var(--text-secondary);
  letter-spacing: -0.3px;
  padding: 0 var(--spacing-sm);
}

/* Modal - iOS 18 Style */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-overlay);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background: var(--bg-primary);
  backdrop-filter: blur(60px) saturate(180%);
  -webkit-backdrop-filter: blur(60px) saturate(180%);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  max-width: 480px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  border: 0.5px solid var(--border-color);
  animation: scaleIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-header {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.8px;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.modal-body {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.5;
  letter-spacing: -0.4px;
}

.modal-footer {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
}

/* Info Card - iOS 18 Style */
.info-card {
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin: var(--spacing-md) 0;
}

.info-card.primary {
  background: rgba(0, 122, 255, 0.08);
}

.info-card.success {
  background: rgba(52, 199, 89, 0.08);
}

.info-card.warning {
  background: rgba(255, 149, 0, 0.08);
}

.info-card.danger {
  background: rgba(255, 59, 48, 0.08);
}

/* Stats Grid - iOS 18 Style */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.stat-item {
  background: var(--bg-secondary);
  backdrop-filter: blur(50px) saturate(150%);
  -webkit-backdrop-filter: blur(50px) saturate(150%);
  border: 0.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  text-align: center;
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -1.5px;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 14px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

/* Responsive Design */
@media (max-width: 768px) {
  .glass-panel {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
  }
  
  .page-title {
    font-size: 28px;
  }
  
  .task-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .timer-display {
    top: 16px;
    right: 16px;
    padding: 10px 16px;
  }
  
  .timer-value {
    font-size: 24px;
  }
  
  .question-card {
    padding: var(--spacing-lg);
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
}