body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f4f4f9;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
}

.container {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px; /* Mobile friendly max width */
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 20px;
}

label {
    display: block;
    margin-top: 15px;
    font-weight: 600;
    color: #555;
}

input[type="text"], select {
    width: 100%;
    padding: 12px;
    margin-top: 5px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px; /* Prevents zoom on iOS */
    box-sizing: border-box;
}

.row {
    display: flex;
    gap: 10px;
}

.col {
    flex: 1;
}

.checkbox-group {
    margin-top: 5px;
    background: #f9f9f9;
    padding: 10px;
    border-radius: 8px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    margin-top: 5px;
    font-weight: normal;
    cursor: pointer;
}

.checkbox-label input {
    margin-right: 10px;
    transform: scale(1.2);
}

.price-box {
    margin-top: 25px;
    background-color: #e3f2fd;
    color: #1565c0;
    padding: 15px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    font-size: 1.2em;
    font-weight: bold;
}

button {
    width: 100%;
    background-color: #007bff;
    color: white;
    padding: 15px;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    margin-top: 20px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

.error-text {
    color: red;
    font-size: 0.85em;
    margin-top: 5px;
    display: block;
}

.hidden {
    display: none;
}