.u4x4-booking-card {
    background: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 22px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.06);
    max-width: 650px;
    margin: 15px auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    box-sizing: border-box;
    container-type: inline-size;
}
.u4x4-card-header {
    border-bottom: 2px solid #25D366;
    padding-bottom: 10px;
    margin-bottom: 18px;
}
.u4x4-card-header h3 {
    margin: 0;
    color: #111111;
    font-size: 22px;
}
.u4x4-card-header p {
    margin: 4px 0 0 0;
    color: #666666;
    font-size: 13px;
}
.u4x4-form-row {
    margin-bottom: 14px;
}
.u4x4-grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 12px;
}
@container (max-width: 520px) {
    .u4x4-grid-2 {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 580px) {
    .u4x4-grid-2 {
        grid-template-columns: 1fr;
    }
}
.u4x4-field label {
    display: block;
    font-weight: 600;
    font-size: 13px;
    margin-bottom: 5px;
    color: #222222;
}
.u4x4-field select, 
.u4x4-field input[type="text"], 
.u4x4-field input[type="tel"], 
.u4x4-field input[type="email"], 
.u4x4-field input[type="date"], 
.u4x4-field input[type="file"],
.u4x4-field textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #cccccc;
    border-radius: 6px;
    font-size: 14px;
    box-sizing: border-box;
    background: #ffffff;
}
.u4x4-field textarea {
    resize: vertical;
    min-height: 70px;
}
.u4x4-section-label {
    font-weight: 700;
    font-size: 14px;
    margin-bottom: 8px;
    display: block;
    color: #111111;
}
.u4x4-checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 8px;
    background: #f9f9f9;
    padding: 12px;
    border-radius: 6px;
}
.u4x4-checkbox-grid label {
    font-size: 13px;
    cursor: pointer;
}
.u4x4-summary-box {
    background: #111111;
    color: #ffffff;
    padding: 16px;
    border-radius: 8px;
    margin: 18px 0;
}
.u4x4-summary-line {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: 14px;
}
.u4x4-total-line {
    border-top: 1px solid #333333;
    padding-top: 8px;
    margin-top: 8px;
    font-size: 18px;
    color: #25D366;
}
.u4x4-btn-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}
.u4x4-btn {
    flex: 1;
    min-width: 180px;
    padding: 14px 18px;
    border: none;
    border-radius: 6px;
    font-weight: bold;
    font-size: 14px;
    cursor: pointer;
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background 0.2s ease;
}
.u4x4-btn-wa { background: #25D366; color: #ffffff; }
.u4x4-btn-wa:hover { background: #20ba5a; }
.u4x4-btn-primary { background: #111111; color: #ffffff; }
.u4x4-btn-primary:hover { background: #333333; }
.u4x4-wa-simple-btn {
    background: #25D366;
    color: #ffffff;
    font-weight: bold;
    padding: 12px 20px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
}