.calculator-container {
    max-width: 500px;
    margin: 20px auto;
    padding: 25px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    color: white;
}

.calculator-container h3 {
    text-align: center;
    margin-bottom: 25px;
    font-size: 24px;
    color: white;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

.calculator-form {
    background: rgba(255,255,255,0.1);
    padding: 20px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: white;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    background: rgba(255,255,255,0.9);
    font-size: 16px;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255,255,255,0.3);
}

.calculate-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(45deg, #ff6b6b, #ee5a52);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.calculate-btn:hover {
    background: linear-gradient(45deg, #ee5a52, #ff6b6b);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.calculate-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.calculator-result {
    margin-top: 25px;
    padding: 20px;
    background: rgba(255,255,255,0.95);
    border-radius: 10px;
    color: #333;
    display: none;
}

.calculator-result h4 {
    color: #764ba2;
    margin-bottom: 15px;
    text-align: center;
}

.result-content {
    line-height: 1.6;
}

.result-item {
    padding: 10px;
    margin: 8px 0;
    background: #f8f9fa;
    border-radius: 6px;
    border-left: 4px solid #667eea;
}

.result-item strong {
    color: #764ba2;
}

.error-message {
    color: #dc3545;
    background: rgba(220,53,69,0.1);
    padding: 10px;
    border-radius: 6px;
    margin: 10px 0;
    border-left: 4px solid #dc3545;
}

.success-message {
    color: #28a745;
    background: rgba(40,167,69,0.1);
    padding: 10px;
    border-radius: 6px;
    margin: 10px 0;
    border-left: 4px solid #28a745;
}

.loading {
    text-align: center;
    padding: 20px;
    color: #667eea;
}

@media (max-width: 600px) {
    .calculator-container {
        margin: 10px;
        padding: 15px;
    }
    
    .calculator-form {
        padding: 15px;
    }
    
    .form-group input,
    .form-group select {
        padding: 10px;
    }
    
    .calculate-btn {
        padding: 12px;
        font-size: 16px;
    }
}