/* Modern Volume Converter Styles */

/* Converter Page Layout */
.converter-page {
  min-height: calc(100vh - 70px);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.converter-page::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  pointer-events: none;
}

.converter-container {
  background: var(--background);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-xl);
  max-width: 800px;
  width: 100%;
  position: relative;
  z-index: 1;
  border: 1px solid var(--border);
}

/* Converter Header */
.converter-header {
  text-align: center;
  margin-bottom: 3rem;
}

.converter-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.converter-header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 600px;
  margin: 0 auto;
}

/* Converter Form */
.converter-form {
  margin-bottom: 3rem;
}

.conversion-controls {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  align-items: end;
  margin-bottom: 2rem;
}

.select-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.select-group label {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-select {
  padding: 1rem;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 500;
  background: var(--background);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 0.75rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
}

.form-select:hover {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.conversion-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-size: 1.5rem;
  padding: 1rem;
  background: var(--surface);
  border-radius: var(--radius);
  border: 2px solid var(--border);
}

.conversion-arrow svg {
  width: 24px;
  height: 24px;
  transform: rotate(90deg);
}

/* Input Group */
.input-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.input-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.input-field label {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-control {
  padding: 1rem;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 1.1rem;
  font-weight: 500;
  background: var(--background);
  color: var(--text-primary);
  transition: var(--transition);
  text-align: center;
}

.form-control:hover {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-control[readonly] {
  background: var(--surface);
  color: var(--primary-color);
  font-weight: 700;
  cursor: pointer;
}

.form-control[readonly]:hover {
  background: var(--border);
}

/* Converter Actions */
.converter-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.btn {
  padding: 1rem 2rem;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  min-width: 120px;
}

.btn-primary {
  background: var(--primary-color);
  color: white;
}

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

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

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

/* Conversion Info */
.conversion-info {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 2rem;
  border: 1px solid var(--border);
}

.conversion-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  text-align: center;
}

.conversion-examples {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1rem;
}

.example-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--background);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 0.9rem;
}

.example-from {
  font-weight: 600;
  color: var(--text-primary);
}

.example-arrow {
  color: var(--primary-color);
  font-weight: 700;
  margin: 0 0.5rem;
}

.example-to {
  font-weight: 600;
  color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
  .converter-page {
    padding: 1rem;
  }
  
  .converter-container {
    padding: 2rem;
  }
  
  .converter-header h1 {
    font-size: 2rem;
  }
  
  .conversion-controls {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .conversion-arrow {
    transform: rotate(90deg);
    margin: 0 auto;
    width: fit-content;
  }
  
  .conversion-arrow svg {
    transform: rotate(0deg);
  }
  
  .input-group {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .converter-actions {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
  
  .conversion-examples {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .converter-container {
    padding: 1.5rem;
  }
  
  .converter-header h1 {
    font-size: 1.75rem;
  }
  
  .converter-header p {
    font-size: 1rem;
  }
  
  .form-select,
  .form-control {
    font-size: 1rem;
    padding: 0.875rem;
  }
  
  .btn {
    padding: 0.875rem 1.5rem;
    font-size: 0.9rem;
  }
}

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

.converter-container {
  animation: slideInUp 0.6s ease-out;
}

/* Focus states for accessibility */
.form-select:focus,
.form-control:focus,
.btn:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  .converter-container {
    background: var(--surface);
  }
  
  .form-control[readonly] {
    background: var(--background);
  }
  
  .conversion-info {
    background: var(--background);
  }
  
  .example-item {
    background: var(--surface);
  }
}