body, html {
    height: 100%;
    margin: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    background-size: cover;
    background-color:#dee6ea;
    font-family: Arial, sans-serif;
}

.menu-button {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: black;
    color: white;
    font-size: 1rem;
    border: none;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
    transition: transform 0.3s, background-color 0.3s;
}

.menu-button:hover {
    transform: scale(1.1);
    background-color: #333;
}

.form-section {
    padding: 20px;
    padding-bottom: 50px;
    background-color: rgba(255, 255, 255, 0.8);
    margin-top: 100px;
    margin-left: 50px;
    margin-right: 50px;
    width: 90%;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.form-section h2, .form-section h4 {
    text-align: center;
}

.month-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-top: 20px;
}

.month-grid div {
    padding: 10px;
    background-color: white;
    border: 1px solid #ccc;
    text-align: center;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.month-grid div:hover {
    background-color: #f0f0f0;
}

.month-grid div.active {
    background-color: #007bff;
    color: white;
}

.options-row {
    display: flex;
    flex-direction: column;
    width: 100%;
    margin-top: 20px;
    align-items: center;
}

.panel-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
}

.panel-image {
    width: 50px;
    height: auto;
    margin-top: 10px;
}

.battery-container {
    margin-top: 20px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.battery-image {
    width: 100px;
    height: auto;
    display: none;
}

#result, #systemCost {
    margin-top: 20px;
    font-weight: bold;
    display: none;
    padding: 10px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    text-align: right;
}

footer {
    margin-top: auto;
    padding: 10px;
    background-color: transparent;
    color: white;
    text-align: center;
    width: 100%;
    font-size: 0.9rem;
}

.input-group {
    display: flex;
    align-items: center;
}

.input-group input {
    margin-right: 10px;
}

.select-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.select-container select, .select-container label {
    margin-top: 10px;
}

.text-center {
    display: flex;
    justify-content: center;
    width: 100%;
}