/* RRB Electronics Learning Platform - Component Styles */

/* Module Cards */
.module-card {
  background: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
  border: 1px solid #e9ecef;
  position: relative;
  overflow: hidden;
  /* Performance optimization */
  will-change: transform;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  /* Better text handling */
  word-wrap: break-word;
  overflow-wrap: break-word;
  /* Ensure minimum height for consistent layout */
  min-height: 400px;
  display: flex;
  flex-direction: column;
}

.module-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* Enhanced hover effects for desktop */
@media (min-width: 992px) {
  .module-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }
}

.module-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--bg-gradient-alt);
}

.module-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
  gap: var(--spacing-md);
  /* Ensure proper alignment on desktop */
  min-height: 60px;
}

/* Enhanced module header for desktop */
@media (min-width: 1200px) {
  .module-header {
    align-items: center;
    flex-wrap: nowrap;
    min-height: 70px;
  }
}

.module-icon {
  font-size: var(--font-size-4xl);
  margin-right: var(--spacing-md);
}

.module-header h3 {
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  margin: 0;
  flex: 1;
  /* Better text overflow handling */
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0; /* Allow flex item to shrink */
}

/* Enhanced title for desktop - allow multiline */
@media (min-width: 1200px) {
  .module-header h3 {
    white-space: normal;
    line-height: 1.3;
    max-height: 2.6em; /* 2 lines max */
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
  }
}

.module-progress {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--spacing-xs);
  /* Ensure consistent width and prevent squashing */
  min-width: 120px;
  flex-shrink: 0;
}

/* Enhanced progress display for desktop */
@media (min-width: 1200px) {
  .module-progress {
    min-width: 140px;
    align-items: center;
  }
}

.progress-bar {
  width: 100px;
  height: 8px;
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius-full);
  overflow: hidden;
}

/* Enhanced progress bar for desktop */
@media (min-width: 1200px) {
  .progress-bar {
    width: 120px;
    height: 10px;
  }
}

.progress-fill {
  height: 100%;
  background: var(--bg-gradient-alt);
  transition: width var(--transition-slow);
  border-radius: var(--border-radius-full);
}

.progress-text {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  font-weight: 500;
  /* Prevent text wrapping */
  white-space: nowrap;
}

/* Enhanced progress text for desktop */
@media (min-width: 1200px) {
  .progress-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 600;
  }
}

.module-content {
  flex: 1; /* Take up remaining space */
  display: flex;
  flex-direction: column;
}

.module-content p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
  /* Improved text readability and overflow handling */
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  flex-shrink: 0;
}

/* Enhanced content for desktop */
@media (min-width: 1200px) {
  .module-content p {
    -webkit-line-clamp: 2;
    font-size: var(--font-size-base);
    line-height: 1.5;
  }
}

.module-features {
  list-style: none;
  padding: 0;
  margin-bottom: var(--spacing-lg);
  flex: 1; /* Take up available space */
}

.module-features li {
  padding: var(--spacing-xs) 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: var(--spacing-lg);
  /* Better text handling */
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Enhanced features for desktop */
@media (min-width: 1200px) {
  .module-features li {
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) 0;
    white-space: nowrap;
  }
}

.module-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success-color);
  font-weight: bold;
}

.module-stats {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
  /* Ensure stats don't grow too much */
  flex-shrink: 0;
}

.module-stats span {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-md);
  font-weight: 500;
  /* Better contrast and readability */
  border: 1px solid #dee2e6;
  white-space: nowrap;
}

/* Enhanced stats for desktop */
@media (min-width: 1200px) {
  .module-stats {
    justify-content: flex-start;
    gap: var(--spacing-sm);
  }
  
  .module-stats span {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    background: var(--bg-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid #c6cbd0;
  }
}

.module-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  /* Keep actions at the bottom */
  margin-top: auto;
}

.module-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  font-size: var(--font-size-sm);
  flex: 1;
  min-width: 120px;
  /* Better button sizing and alignment */
  text-align: center;
  line-height: 1.4;
}

/* Enhanced buttons for desktop */
@media (min-width: 1200px) {
  .module-actions {
    gap: var(--spacing-lg);
    flex-wrap: nowrap;
  }
  
  .module-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    min-width: 140px;
    border-radius: var(--border-radius-lg);
  }
}

.module-btn.primary {
  background: var(--primary-color);
  color: var(--text-light);
}

.module-btn.primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.module-btn.secondary {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.module-btn.secondary:hover {
  background: var(--primary-color);
  color: var(--text-light);
}

/* Progress Section */
.progress-section {
  background: var(--bg-secondary);
}

.progress-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

/* Enhanced progress grid for larger screens */
@media (min-width: 1200px) {
  .progress-grid {
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xxl);
  }
}

.progress-card {
  background: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
}

.progress-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.circular-progress {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

.progress-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: conic-gradient(var(--primary-color) 0deg, var(--bg-secondary) 0deg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.progress-circle::before {
  content: '';
  width: 90px;
  height: 90px;
  background: var(--bg-primary);
  border-radius: 50%;
  position: absolute;
}

.progress-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  z-index: 1;
}

.progress-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.detail-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid #e9ecef;
}

.detail-item:last-child {
  border-bottom: none;
}

.detail-item span:first-child {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.detail-item span:last-child {
  color: var(--text-primary);
  font-weight: 600;
}

/* Recent Activity */
.activity-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.activity-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--border-radius-md);
  transition: background-color var(--transition-fast);
}

.activity-item:hover {
  background: #e9ecef;
}

.activity-icon {
  font-size: var(--font-size-lg);
  width: 40px;
  text-align: center;
}

.activity-text {
  flex: 1;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.activity-time {
  color: var(--text-muted);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* Tool Cards */
.tool-card {
  background: var(--bg-primary);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid #e9ecef;
  /* Performance optimization */
  will-change: transform;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Enhanced tool card hover for desktop */
@media (min-width: 992px) {
  .tool-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }
}

.tool-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
  display: block;
}

.tool-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.tool-card p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.tool-btn {
  background: var(--bg-gradient-alt);
  color: var(--text-light);
  border: none;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-base);
  width: 100%;
}

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

/* Quick Access */
.quick-access-section {
  background: var(--bg-secondary);
}

.quick-item {
  background: var(--bg-primary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
  border: 1px solid #e9ecef;
}

.quick-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background: var(--primary-color);
  color: var(--text-light);
}

.quick-icon {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
  display: block;
}

.quick-item span {
  font-weight: 600;
  font-size: var(--font-size-sm);
}

/* Interactive Elements */
.interactive-demo {
  background: linear-gradient(135deg, #e8f4fd 0%, #f0f9ff 100%);
  border: 2px solid var(--primary-light);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  margin: var(--spacing-lg) 0;
  position: relative;
}

.interactive-demo::before {
  content: '⚡ Interactive';
  position: absolute;
  top: -12px;
  left: var(--spacing-lg);
  background: var(--primary-color);
  color: var(--text-light);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.input-controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  align-items: center;
}

.input-controls label {
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  min-width: 120px;
}

.input-controls input,
.input-controls select {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid #ddd;
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
  min-width: 150px;
}

.input-controls input:focus,
.input-controls select:focus {
  border-color: var(--primary-color);
  outline: none;
}

.output-display {
  background: var(--bg-primary);
  border: 3px solid var(--accent-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  text-align: center;
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--accent-color);
  box-shadow: var(--shadow-md);
}

.measurement-display {
  background: var(--bg-primary);
  border: 2px solid #ddd;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  text-align: center;
  font-weight: 600;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

/* Formula and Info Boxes */
.formula-box {
  background: var(--bg-secondary);
  border-left: 4px solid var(--primary-color);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  overflow-x: auto;
}

.info-box {
  background: var(--info-color);
  color: var(--text-light);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  margin: var(--spacing-lg) 0;
  position: relative;
}

.info-box::before {
  content: 'ℹ️';
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.warning-box {
  background: var(--warning-color);
  color: var(--text-primary);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  margin: var(--spacing-lg) 0;
  position: relative;
}

.warning-box::before {
  content: '⚠️';
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.success-box {
  background: var(--success-color);
  color: var(--text-light);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  margin: var(--spacing-lg) 0;
  position: relative;
}

.success-box::before {
  content: '✅';
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  font-size: var(--font-size-lg);
}

/* Circuit Diagrams */
.circuit-diagram {
  font-family: var(--font-family-mono);
  background: var(--bg-primary);
  border: 2px solid #ddd;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  overflow-x: auto;
  white-space: pre;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  line-height: 1.2;
}

/* Component Symbols */
.component-symbol {
  display: inline-block;
  margin: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--bg-primary);
  border: 2px solid var(--text-primary);
  border-radius: var(--border-radius-md);
  text-align: center;
  font-weight: bold;
  font-size: var(--font-size-lg);
  min-width: 80px;
  transition: all var(--transition-fast);
}

.component-symbol:hover {
  background: var(--primary-color);
  color: var(--text-light);
  transform: scale(1.05);
}

/* Application Boxes */
.application-box {
  background: var(--bg-primary);
  border: 1px solid #ddd;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  margin: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.application-box:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.application-box h4 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
}

.application-box p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  margin: 0;
}

/* Component Grid */
.component-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

/* Performance optimizations */
.module-card,
.tool-card,
.progress-card,
.quick-item {
  /* GPU acceleration for smooth animations */
  will-change: transform;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

.slide-in-up {
  animation: slideInUp 0.5s ease-out;
}

.bounce-in {
  animation: bounceIn 0.6s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* Dark Theme Adjustments */
[data-theme="dark"] .module-card,
[data-theme="dark"] .tool-card,
[data-theme="dark"] .progress-card,
[data-theme="dark"] .quick-item,
[data-theme="dark"] .application-box {
  border-color: #444;
}

[data-theme="dark"] .interactive-demo {
  background: linear-gradient(135deg, #1a2332 0%, #2d3748 100%);
  border-color: var(--primary-color);
}

[data-theme="dark"] .formula-box {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

[data-theme="dark"] .circuit-diagram {
  background: var(--bg-secondary);
  border-color: #444;
  color: var(--text-primary);
}

[data-theme="dark"] .component-symbol {
  background: var(--bg-secondary);
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

[data-theme="dark"] .component-symbol:hover {
  background: var(--primary-color);
  color: var(--text-light);
}