/* Calculator Frontend Styles */
.calculator-container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.calculator-field {
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.calculator-field label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #333;
}

.required {
    color: #e74c3c;
}

.calculator-input,
.calculator-textarea,
.calculator-select,
.calculator-number,
.calculator-date,
.calculator-time {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
}

.calculator-input:focus,
.calculator-textarea:focus,
.calculator-select:focus,
.calculator-number:focus,
.calculator-date:focus,
.calculator-time:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

.calculator-textarea {
    min-height: 100px;
    resize: vertical;
}

.radio-label,
.checkbox-label {
    display: block;
    margin-bottom: 8px;
    font-weight: normal;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.radio-label:hover,
.checkbox-label:hover {
    background-color: #f8f9fa;
}

.radio-label input,
.checkbox-label input {
    width: auto;
    margin-right: 8px;
}

.calculator-summary {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin: 30px 0;
    border-left: 4px solid #3498db;
}

.calculator-summary h3 {
    margin-top: 0;
    color: #2c3e50;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

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

.summary-label {
    font-weight: bold;
    flex: 1;
}

.summary-value {
    color: #666;
    flex: 1;
    text-align: right;
}

.total-amount {
    margin-top: 20px;
    padding: 15px;
    background: #e8f5e8;
    border-radius: 4px;
    text-align: center;
    font-size: 18px;
    border: 1px solid #27ae60;
}

.calculator-actions {
    text-align: center;
    margin-top: 30px;
}

.calculator-submit {
    background: #3498db;
    color: white;
    padding: 15px 40px;
    border: none;
    border-radius: 4px;
    font-size: 18px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.calculator-submit:hover {
    background: #2980b9;
}

.calculator-submit:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
}

.success-message {
    background: #d4edda;
    color: #155724;
    padding: 15px;
    border-radius: 4px;
    border: 1px solid #c3e6cb;
    text-align: center;
    font-size: 16px;
    margin-top: 20px;
}

.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 15px;
    border-radius: 4px;
    border: 1px solid #f5c6cb;
    text-align: center;
    font-size: 16px;
    margin-top: 20px;
}

.calculator-preview {
    padding: 20px;
    background: #f9f9f9;
    border-radius: 4px;
}

/* Enhanced visual feedback */
.field-focused {
    background: rgba(52, 152, 219, 0.05);
    border-radius: 4px;
    padding: 2px;
    margin: -2px;
}

.field-error {
    background: rgba(231, 76, 60, 0.05);
    border-radius: 4px;
    padding: 2px;
    margin: -2px;
}

.field-error label {
    color: #e74c3c;
}

/* Loading states */
.calculator-submit:disabled {
    position: relative;
    overflow: hidden;
}

.calculator-submit:disabled::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Animation classes for JavaScript interactions */
.loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
    margin-right: 8px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.field-error {
    animation: shake 0.5s ease-in-out;
}

.field-error input,
.field-error select,
.field-error textarea {
    border-color: #e74c3c !important;
    box-shadow: 0 0 0 0.2rem rgba(231, 76, 60, 0.25) !important;
}

.field-focused {
    transform: translateY(-2px);
    transition: transform 0.2s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

#total-display.updated {
    animation: pulse 0.5s ease-in-out;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.success-icon, .error-icon {
    font-size: 18px;
    margin-bottom: 5px;
    display: inline-block;
}

/* Responsive design */
@media (max-width: 768px) {
    .calculator-container {
        margin: 10px;
        padding: 15px;
    }
    
    .summary-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .summary-value {
        margin-top: 4px;
        font-weight: bold;
        text-align: left;
    }
    
    .calculator-submit {
        width: 100%;
        padding: 12px;
    }
    
    .calculator-input,
    .calculator-textarea,
    .calculator-select,
    .calculator-number,
    .calculator-date,
    .calculator-time {
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .calculator-container {
        background: #2c3e50;
        color: #ecf0f1;
    }
    
    .calculator-field label {
        color: #ecf0f1;
    }
    
    .calculator-input,
    .calculator-textarea,
    .calculator-select,
    .calculator-number,
    .calculator-date,
    .calculator-time {
        background: #34495e;
        border-color: #5d6d7e;
        color: #ecf0f1;
    }
    
    .calculator-input:focus,
    .calculator-textarea:focus,
    .calculator-select:focus,
    .calculator-number:focus,
    .calculator-date:focus,
    .calculator-time:focus {
        border-color: #3498db;
        background: #34495e;
    }
    
    .calculator-summary {
        background: #34495e;
        color: #ecf0f1;
    }
    
    .radio-label:hover,
    .checkbox-label:hover {
        background-color: #34495e;
    }
}

/* Print styles */
@media print {
    .calculator-container {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .calculator-actions {
        display: none;
    }
    
    .calculator-submit {
        display: none;
    }
    
    #calculator-result {
        display: block !important;
    }
}

/* Additional accessibility improvements */
.calculator-field:focus-within {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .calculator-input,
    .calculator-textarea,
    .calculator-select,
    .calculator-number,
    .calculator-date,
    .calculator-time {
        border-width: 3px;
    }
    
    .calculator-submit {
        border: 2px solid #000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}
    border: 2px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
}

.calculator-input:focus,
.calculator-textarea:focus,
.calculator-select:focus,
.calculator-number:focus,
.calculator-date:focus,
.calculator-time:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

.calculator-textarea {
    min-height: 100px;
    resize: vertical;
}

.radio-label,
.checkbox-label {
    display: block;
    margin-bottom: 8px;
    font-weight: normal;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.radio-label:hover,
.checkbox-label:hover {
    background-color: #f8f9fa;
}

.radio-label input,
.checkbox-label input {
    width: auto;
    margin-right: 8px;
}

.calculator-summary {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin: 30px 0;
    border-left: 4px solid #3498db;
}

.calculator-summary h3 {
    margin-top: 0;
    color: #2c3e50;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

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

.summary-label {
    font-weight: bold;
    flex: 1;
}

.summary-value {
    color: #666;
    flex: 1;
    text-align: right;
}

.total-amount {
    margin-top: 20px;
    padding: 15px;
    background: #e8f5e8;
    border-radius: 4px;
    text-align: center;
    font-size: 18px;
    border: 1px solid #27ae60;
}

.calculator-actions {
    text-align: center;
    margin-top: 30px;
}

.calculator-submit {
    background: #3498db;
    color: white;
    padding: 15px 40px;
    border: none;
    border-radius: 4px;
    font-size: 18px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.calculator-submit:hover {
    background: #2980b9;
}

.calculator-submit:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
}

.success-message {
    background: #d4edda;
    color: #155724;
    padding: 15px;
    border-radius: 4px;
    border: 1px solid #c3e6cb;
    text-align: center;
    font-size: 16px;
    margin-top: 20px;
}

.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 15px;
    border-radius: 4px;
    border: 1px solid #f5c6cb;
    text-align: center;
    font-size: 16px;
    margin-top: 20px;
}

.calculator-preview {
    padding: 20px;
    background: #f9f9f9;
    border-radius: 4px;
}

/* Enhanced visual feedback */
.field-focused {
    background: rgba(52, 152, 219, 0.05);
    border-radius: 4px;
    padding: 2px;
    margin: -2px;
}

.field-error {
    background: rgba(231, 76, 60, 0.05);
    border-radius: 4px;
    padding: 2px;
    margin: -2px;
}

.field-error label {
    color: #e74c3c;
}

/* Loading states */
.calculator-submit:disabled {
    position: relative;
    overflow: hidden;
}

.calculator-submit:disabled::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Responsive design */
@media (max-width: 768px) {
    .calculator-container {
        margin: 10px;
        padding: 15px;
    }
    
    .summary-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .summary-value {
        margin-top: 4px;
        font-weight: bold;
        text-align: left;
    }
    
    .calculator-submit {
        width: 100%;
        padding: 12px;
    }
    
    .calculator-input,
    .calculator-textarea,
    .calculator-select,
    .calculator-number,
    .calculator-date,
    .calculator-time {
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .calculator-container {
        background: #2c3e50;
        color: #ecf0f1;
    }
    
    .calculator-field label {
        color: #ecf0f1;
    }
    
    .calculator-input,
    .calculator-textarea,
    .calculator-select,
    .calculator-number,
    .calculator-date,
    .calculator-time {
        background: #34495e;
        border-color: #5d6d7e;
        color: #ecf0f1;
    }
    
    .calculator-input:focus,
    .calculator-textarea:focus,
    .calculator-select:focus,
    .calculator-number:focus,
    .calculator-date:focus,
    .calculator-time:focus {
        border-color: #3498db;
        background: #34495e;
    }
    
    .calculator-summary {
        background: #34495e;
        color: #ecf0f1;
    }
    
    .radio-label:hover,
    .checkbox-label:hover {
        background-color: #34495e;
    }
}

/* Print styles */
@media print {
    .calculator-container {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .calculator-actions {
        display: none;
    }
    
    .calculator-submit {
        display: none;
    }
    
    #calculator-result {
        display: block !important;
    }
}