/**
 * MDN_StorageCalculator — frontend styles
 */

.mdn-storage-calculator {
    font-family: inherit;
    padding: 2rem;
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.mdn-calc__heading {
    font-size: 1.4rem;
    font-weight: 600;
    margin: 0 0 1.5rem;
    color: #1a1a1a;
}

.mdn-calc__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

@media (max-width: 768px) {
    .mdn-calc__inner {
        grid-template-columns: 1fr;
    }
}

/* --- Controls --- */
.mdn-calc__controls {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.mdn-calc__field label {
    font-size: 13px;
    color: #555;
    display: block;
    margin-bottom: 6px;
}

.mdn-calc__field-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.mdn-calc__field-header label {
    margin: 0;
}

.mdn-calc__value {
    font-size: 13px;
    font-weight: 600;
    color: #1a1a1a;
    min-width: 36px;
    text-align: right;
}

.mdn-calc__range {
    width: 100%;
    accent-color: #2e7d32;
    cursor: pointer;
}

.mdn-calc__range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: #999;
    margin-top: 3px;
}

/* Button groups */
.mdn-calc__btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.mdn-calc__btn-group button {
    font-size: 12px;
    padding: 4px 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    background: #f5f5f5;
    color: #333;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.mdn-calc__btn-group button:hover {
    border-color: #2e7d32;
    color: #2e7d32;
}

.mdn-calc__btn-group button.is-active {
    background: #2e7d32;
    border-color: #2e7d32;
    color: #fff;
    font-weight: 600;
}

/* --- Result panel --- */
.mdn-calc__result {
    background: #f9f9f9;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
}

.mdn-calc__result-label {
    font-size: 13px;
    color: #777;
    margin: 0 0 8px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.mdn-calc__result-value {
    font-size: 2.8rem;
    font-weight: 700;
    color: #1a1a1a;
    margin: 0 0 1.5rem;
    line-height: 1;
}

/* Breakdown */
.mdn-calc__breakdown {
    text-align: left;
    border-top: 1px solid #e0e0e0;
    padding-top: 1rem;
}

.mdn-calc__breakdown-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #999;
    margin: 0 0 10px;
}

.mdn-calc__breakdown-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    padding: 4px 0;
    color: #555;
}

.mdn-calc__breakdown-row span:last-child {
    font-weight: 600;
    color: #1a1a1a;
}