.metal_calc {
    margin: 35px 0;
    padding: 25px;
    background: #f7f7f7;
    border: 1px solid #e6e6e6;
    border-radius: 12px;
    box-sizing: border-box;
}

.metal_calc *,
.metal_calc *::before,
.metal_calc *::after {
    box-sizing: border-box;
}

.metal_calc h2 {
    margin: 0 0 12px;
    font-size: 24px;
}

.metal_calc_intro {
    margin: 0 0 22px;
    color: #555;
    line-height: 1.5;
}

.metal_calc_rows {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 20px;
}

/* Карточка металла */

.metal_calc_row {
    padding: 16px;
    background: #fff;
    border: 1px solid #e2e2e2;
    border-radius: 10px;
}

.mc_row_header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.mc_row_number {
    font-size: 15px;
    font-weight: 600;
    color: #444;
}

.mc_remove {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 34px;
    width: 34px;
    height: 34px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: #f7eeee;
    color: #b22222;
    font-size: 25px;
    line-height: 1;
    cursor: pointer;
}

.mc_remove:hover {
    background: #f0dada;
    color: #d00000;
}

/* Поля */

.mc_fields {
    display: grid;
    grid-template-columns: minmax(0, 2fr) 130px 120px;
    gap: 12px;
    align-items: end;
}

.mc_field {
    display: flex;
    flex-direction: column;
    gap: 7px;
    min-width: 0;
}

.mc_field_label {
    font-size: 13px;
    color: #666;
    line-height: 1.3;
}

.mc_field select,
.mc_field input {
    display: block;
    width: 100%;
    min-width: 0;
    height: 44px;
    padding: 9px 12px;
    border: 1px solid #ccc;
    border-radius: 7px;
    background: #fff;
    color: #222;
    font: inherit;
    font-size: 16px;
}

.mc_field select:focus,
.mc_field input:focus {
    outline: 2px solid #9daac7;
    outline-offset: 1px;
}

/* Сумма отдельного металла */

.mc_sum_box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-top: 15px;
    padding-top: 13px;
    border-top: 1px solid #eee;
}

.mc_sum_label {
    font-size: 14px;
    color: #666;
}

.mc_sum {
    font-size: 18px;
    font-weight: 700;
    color: #222;
    white-space: nowrap;
}

/* Добавление металла */

.metal_calc_add {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    max-width: 100%;
    padding: 11px 18px;
    border: 1px solid #ccc;
    border-radius: 7px;
    background: #fff;
    color: #222;
    font: inherit;
    cursor: pointer;
}

.metal_calc_add:hover {
    background: #eee;
}

/* Общий итог */

.metal_calc_result {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    margin-top: 25px;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
}

.metal_calc_result span {
    font-size: 17px;
    line-height: 1.4;
}

.metal_calc_total {
    font-size: 26px;
    font-weight: 700;
    white-space: nowrap;
}

/* Примечание */

.metal_calc_note {
    margin: 15px 0 0;
    font-size: 13px;
    line-height: 1.5;
    color: #666;
}

/* Планшеты */

@media (max-width: 800px) {

    .metal_calc {
        padding: 18px;
    }

    .mc_fields {
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    }

    .mc_type_field {
        grid-column: 1 / -1;
    }

    .mc_weight_field {
        grid-column: 1;
    }

    .mc_unit_field {
        grid-column: 2;
    }
}

/* Телефоны */

@media (max-width: 600px) {

    .metal_calc {
        margin: 28px 0;
        padding: 16px;
        border-radius: 12px;
    }

    .metal_calc h2 {
        font-size: 22px;
        line-height: 1.3;
    }

    .metal_calc_intro {
        margin-bottom: 20px;
        font-size: 15px;
        line-height: 1.5;
    }

    .metal_calc_rows {
        gap: 12px;
        margin-bottom: 16px;
    }

    .metal_calc_row {
        padding: 14px;
        border-radius: 9px;
    }

    .mc_row_header {
        margin-bottom: 12px;
    }

    .mc_row_number {
        font-size: 14px;
    }

    .mc_remove {
        flex-basis: 32px;
        width: 32px;
        height: 32px;
        font-size: 23px;
    }

    .mc_fields {
        display: grid;
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
        gap: 12px 10px;
    }

    .mc_type_field {
        grid-column: 1 / -1;
    }

    .mc_weight_field {
        grid-column: 1;
    }

    .mc_unit_field {
        grid-column: 2;
    }

    .mc_field_label {
        font-size: 13px;
    }

    .mc_field select,
    .mc_field input {
        height: 43px;
        padding: 8px 10px;
        font-size: 16px;
    }

    .mc_sum_box {
        margin-top: 16px;
        padding-top: 13px;
    }

    .mc_sum_label {
        font-size: 13px;
    }

    .mc_sum {
        font-size: 17px;
    }

    .metal_calc_add {
        width: 100%;
        min-height: 44px;
        padding: 10px 12px;
        font-size: 15px;
    }

    .metal_calc_result {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        margin-top: 20px;
        padding: 18px;
    }

    .metal_calc_result span {
        font-size: 16px;
    }

    .metal_calc_total {
        font-size: 26px;
    }

    .metal_calc_note {
        margin-top: 14px;
        font-size: 12px;
        line-height: 1.6;
    }
}