.sk-bag-calc {
    margin: 18px 0;
    padding: 20px;
    border-radius: 28px;
    background: #fff;
    box-shadow: 0 14px 40px rgba(20, 28, 45, .08);
    border: 1px solid rgba(20, 28, 45, .06);
    color: #253044;
    overflow: hidden;
}

.sk-bag-calc,
.sk-bag-calc * {
    box-sizing: border-box;
}

.sk-bag-calc__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 16px;
}

.sk-bag-calc__title {
    font-size: 18px;
    font-weight: 800;
    line-height: 1.2;
    color: #253044;
}

.sk-bag-calc__subtitle {
    margin-top: 4px;
    font-size: 13px;
    color: #8a92a3;
}

.sk-bag-calc__icon {
    flex: 0 0 auto;
    width: 42px;
    height: 42px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff3f4;
    font-size: 22px;
}

.sk-bag-calc__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.sk-bag-calc__field {
    display: block;
    margin: 0;
}

.sk-bag-calc__field span {
    display: block;
    margin-bottom: 7px;
    font-size: 13px;
    font-weight: 700;
    color: #5f687a;
}

.sk-bag-calc input {
    width: 100%;
    height: 48px;
    border-radius: 16px;
    border: 1px solid #e4e8ef;
    background: #f8f9fb;
    padding: 0 14px;
    font-size: 16px;
    font-weight: 700;
    color: #253044;
    outline: none;
    transition: border-color .18s ease, background .18s ease, box-shadow .18s ease;
}

.sk-bag-calc input:focus {
    border-color: #ff4d5a;
    background: #fff;
    box-shadow: 0 0 0 4px rgba(255, 77, 90, .11);
}

.sk-bag-calc__quick {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.sk-bag-calc__quick-btn {
    border: 0;
    border-radius: 999px;
    padding: 8px 13px;
    background: #f1f3f7;
    color: #253044;
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
    transition: .18s ease;
}

.sk-bag-calc__quick-btn:hover,
.sk-bag-calc__quick-btn.is-active {
    background: #fff0f1;
    color: #ff4d5a;
}

.sk-bag-calc__result {
    margin-top: 15px;
    padding: 14px 16px;
    border-radius: 18px;
    background: #f8f9fb;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
}

.sk-bag-calc__result-main {
    display: flex;
    flex-direction: column;
    gap: 3px;
    font-size: 13px;
    color: #8a92a3;
}

.sk-bag-calc__result-main strong {
    color: #253044;
    font-size: 22px;
    line-height: 1.1;
}

.sk-bag-calc__result-extra {
    text-align: right;
    color: #6e7788;
    font-size: 13px;
}

.sk-bag-calc__result-extra small {
    display: block;
    margin-top: 3px;
    color: #9aa2b1;
    white-space: nowrap;
}

.sk-bag-calc__add {
    width: 100%;
    height: 52px;
    margin-top: 14px;
    border: 0;
    border-radius: 999px;
    background: #2f3545;
    color: #fff;
    font-size: 15px;
    font-weight: 800;
    cursor: pointer;
    transition: .2s ease;
}

.sk-bag-calc__add:not(:disabled):hover {
    background: #ff4d5a;
    transform: translateY(-1px);
}

.sk-bag-calc__add:disabled {
    opacity: .45;
    cursor: not-allowed;
}

.sk-bag-calc__message {
    min-height: 18px;
    margin-top: 9px;
    font-size: 13px;
    font-weight: 700;
    color: #198754;
    text-align: center;
}

.sk-bag-calc__message.is-error {
    color: #dc3545;
}

.sk-bag-calc__note {
    margin-top: 8px;
    color: #9aa2b1;
    font-size: 12px;
    line-height: 1.35;
}

@media (max-width: 575px) {
    .sk-bag-calc {
        border-radius: 22px;
        padding: 16px;
    }

    .sk-bag-calc__grid {
        grid-template-columns: 1fr;
    }

    .sk-bag-calc__result {
        align-items: flex-start;
        flex-direction: column;
    }

    .sk-bag-calc__result-extra {
        text-align: left;
    }
}