/* Banner cenová kalkulačka */
.bck-wrapper {
    margin: 32px 0;
}

.bck-card {
    max-width: 920px;
    margin: 0 auto;
    padding: 28px;
    border-radius: 18px;
    background: #ffffff;
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.08);
    border: 1px solid #eeeeee;
}

.bck-header {
    margin-bottom: 22px;
}

.bck-eyebrow {
    margin: 0 0 6px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #d71920;
}

.bck-header h2 {
    margin: 0 0 8px;
    font-size: clamp(26px, 4vw, 40px);
    line-height: 1.1;
}

.bck-header p {
    margin: 0;
    color: #555555;
}

.bck-form {
    display: grid;
    gap: 18px;
}

.bck-grid {
    display: grid;
    gap: 16px;
}

.bck-grid-2 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.bck-form label,
.bck-field > span {
    display: grid;
    gap: 7px;
    font-weight: 700;
    color: #222222;
}

.bck-form input[type="text"],
.bck-form input[type="email"],
.bck-form input[type="tel"],
.bck-form input[type="number"],
.bck-form input[type="file"],
.bck-form textarea {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid #d7d7d7;
    border-radius: 10px;
    background: #ffffff;
    color: #222222;
    font: inherit;
    font-weight: 400;
}

.bck-form textarea {
    resize: vertical;
}

.bck-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.bck-option {
    display: flex !important;
    align-items: flex-start;
    gap: 10px !important;
    padding: 14px;
    border: 1px solid #dddddd;
    border-radius: 14px;
    background: #fafafa;
    cursor: pointer;
}

.bck-option input {
    margin-top: 3px;
}

.bck-option strong,
.bck-option small {
    display: block;
}

.bck-option small,
.bck-help-text {
    margin-top: 4px;
    color: #666666;
    font-weight: 400;
    line-height: 1.4;
    font-size: 13px;
}

.bck-inline-options {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
}

.bck-inline-options label {
    display: flex;
    align-items: center;
    gap: 7px;
}

.bck-upload-field small,
.bck-price-box small {
    display: block;
    color: #666666;
    font-size: 13px;
    font-weight: 400;
}

.bck-price-box {
    padding: 18px;
    border-radius: 14px;
    background: #fff3f3;
    border: 1px solid #ffd4d4;
}

.bck-price-box span {
    display: block;
    margin-bottom: 5px;
    color: #555555;
}

.bck-price-box strong {
    display: block;
    color: #d71920;
    font-size: 30px;
    line-height: 1.1;
}

.bck-consent {
    display: flex !important;
    align-items: flex-start;
    gap: 10px !important;
    font-weight: 400 !important;
    line-height: 1.45;
}

.bck-consent input {
    margin-top: 4px;
}

.bck-submit {
    appearance: none;
    border: 0;
    border-radius: 999px;
    background: #d71920;
    color: #ffffff;
    padding: 15px 24px;
    font-weight: 800;
    font-size: 17px;
    cursor: pointer;
    transition: transform 0.15s ease, opacity 0.15s ease;
}

.bck-submit:hover {
    transform: translateY(-1px);
    opacity: 0.92;
}

.bck-alert {
    padding: 14px 16px;
    margin-bottom: 18px;
    border-radius: 12px;
    font-weight: 700;
}

.bck-alert-success {
    background: #edf9ee;
    color: #176b24;
    border: 1px solid #c7edcc;
}

.bck-alert-error {
    background: #fff1f1;
    color: #9d1717;
    border: 1px solid #ffcaca;
}

@media (max-width: 720px) {
    .bck-card {
        padding: 20px;
    }

    .bck-grid-2,
    .bck-options {
        grid-template-columns: 1fr;
    }

    .bck-submit {
        width: 100%;
    }
}