.date-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.input-group {
    display: flex;
    flex-direction: column;
}

.input-group label {
    font-size: 1rem;
    color: #555;
    margin-bottom: 8px;
}

.input-group input[type="date"] {
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.input-group input[type="date"]:focus {
    border-color: #007bff;
    outline: none;
}

.calculate-btn {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
    width: 100%;
    margin-bottom: 20px;
}

.calculate-btn:hover {
    background-color: #0056b3;
}

.result-panel {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    margin-top: 20px;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    text-align: center;
}

.result-item {
    padding: 15px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.result-item h3 {
    font-size: 2rem;
    color: #007bff;
    margin: 0;
}

.result-item p {
    color: #666;
    margin: 5px 0 0;
    font-size: 0.9rem;
}

.error-message {
    color: #dc3545;
    text-align: center;
    margin-top: 10px;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .date-inputs {
        grid-template-columns: 1fr;
    }
    
    .result-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}