/* Real-Time Calculator Styles */

.page-title {
  margin-top: 80px;
  margin-bottom: 20px;
  font-weight: 700;
  color: #2c3e50;
}

.calc-section {
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  margin-bottom: 30px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.calc-section:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

.section-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 20px 30px;
  display: flex;
  align-items: center;
  gap: 15px;
}

#usart-section .section-header {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

#pwm-section .section-header {
  background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

#adc-section .section-header {
  background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

#i2c-section .section-header {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.section-header i {
  font-size: 28px;
}

.section-header h2 {
  margin: 0;
  font-size: 24px;
  font-weight: 600;
}

.section-body {
  padding: 30px;
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 10px;
  display: block;
  font-size: 14px;
}

.form-control {
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  padding: 10px 15px;
  font-size: 14px;
  transition: border-color 0.3s ease;
}

.form-control:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.btn-group-toggle {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.btn-group-toggle label {
  margin: 0;
  padding: 8px 16px;
  border-radius: 6px;
  border: 2px solid #e0e0e0;
  background: white;
  color: #2c3e50;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 14px;
  font-weight: 500;
}

.btn-group-toggle label:hover {
  background: #f8f9fa;
  border-color: #667eea;
}

.btn-group-toggle label.active {
  background: #667eea;
  border-color: #667eea;
  color: white;
}

.btn-outline-primary.active {
  background: #4facfe !important;
  border-color: #4facfe !important;
}

.btn-outline-success.active {
  background: #43e97b !important;
  border-color: #43e97b !important;
}

.btn-outline-warning.active {
  background: #fee140 !important;
  border-color: #fee140 !important;
  color: #2c3e50 !important;
}

.btn-outline-danger.active {
  background: #f5576c !important;
  border-color: #f5576c !important;
}

.result-box {
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  border-radius: 10px;
  padding: 25px;
  margin-top: 30px;
}

.result-box h4 {
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 20px;
  font-size: 20px;
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

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

.result-label {
  font-weight: 600;
  color: #2c3e50;
  font-size: 15px;
}

.result-value {
  font-weight: 700;
  color: #667eea;
  font-size: 16px;
  font-family: 'Courier New', monospace;
}

/* Responsive Design */
@media (max-width: 768px) {
  .section-header {
    padding: 15px 20px;
  }

  .section-header h2 {
    font-size: 20px;
  }

  .section-header i {
    font-size: 24px;
  }

  .section-body {
    padding: 20px;
  }

  .btn-group-toggle label {
    padding: 6px 12px;
    font-size: 12px;
  }

  .result-box {
    padding: 20px;
  }

  .result-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
  }

  .page-title {
    font-size: 28px;
  }
}

/* Animation for results */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.result-value.updated {
  animation: fadeIn 0.5s ease;
}

/* Input number styling */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  opacity: 1;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: #667eea;
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: #5568d3;
}