.gutter-booking-form {
    max-width: 520px;
    margin: 40px auto;
    padding: 30px;
    border-radius: 12px;
    background: #ffffff;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    font-family: Arial, sans-serif;
}
.header-logo {
    text-align: center;
    margin-bottom: 20px;
}
.header-logo img {
    max-width: 80px;
    height: auto;
    display: block;
    margin: 0 auto 10px;
}
h2 {
    text-align: center;
    font-size: 26px;
    margin-bottom: 10px;
}
#progress-bar {
    text-align: center;
    margin-bottom: 20px;
    font-weight: bold;
    color: #0073aa;
}
label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #000;
}
input, select, textarea {
    width: 100%;
    padding: 12px 14px;
    margin-bottom: 22px;
    border: 2px solid #0073aa;
    border-radius: 6px;
    font-size: 15px;
}
.gutters-input {
    max-width: 120px;
    margin-bottom: 22px;
    display: block;
}
button {
    padding: 12px 20px;
    font-size: 16px;
    font-weight: bold;
    color: #ffffff;
    background-color: #39FF14;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    margin-right: 10px;
    text-transform: uppercase;
}
button:hover {
    background-color: #2ecc10;
}
#consent_message, #promo_message, #confirmation_message {
    font-size: 14px;
    color: #333;
    text-align: center;
    margin: 10px 0 20px;
}
#estimate_result {
    text-align: center;
    font-size: 28px;
    font-weight: bold;
    margin: 20px 0;
    color: #0073aa;
    padding: 20px;
    border: 2px dashed #0073aa;
    border-radius: 8px;
    background-color: #f0faff;
}
.step {
    display: none;
}
.step.active {
    display: block;
}
.no-spinner::-webkit-inner-spin-button,
.no-spinner::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.no-spinner {
    -moz-appearance: textfield;
}