.form-container {
    padding: 30px;
}
.form-group {
    margin-bottom: 20px;
}
.form-control {
    width: calc(100% - 20px);
    padding: 20px;
    border: 1px solid #000;
    border-radius: 8px;
    font-size: 16px;
    box-sizing: border-box;
    transition: border-color 0.3s;
}
.form-control:focus {
    border-color: #007bff;
    outline: none;
}
.checkbox-group {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
}
.checkbox-group input[type="checkbox"] {
    margin-right: 10px;
    width: 18px;
    height: 18px;
}
.checkbox-group label {
    font-size: 14px;
    color: #555;
}
.btn-submit {
    width: calc(100% - 20px);
    padding: 20px;
    background-color: #000;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}
.btn-submit:hover {
    background-color: #333;
}
.phone-input::placeholder {
    color: #999;
}