.bkbg-ec-app {
    font-family: system-ui, -apple-system, sans-serif;
    box-sizing: border-box;
}

.bkbg-ec-wrap {
    border-radius: 12px;
    padding: 28px;
    margin: 0 auto;
}

.bkbg-ec-title {
    font-family: var(--bkbg-ec-ttl-font-family, inherit);
    font-size: var(--bkbg-ec-ttl-font-size-d, 26px);
    font-weight: var(--bkbg-ec-ttl-font-weight, 700);
    line-height: var(--bkbg-ec-ttl-line-height-d, 1.2);
    font-style: var(--bkbg-ec-ttl-font-style, normal);
    text-decoration: var(--bkbg-ec-ttl-text-decoration, none);
    text-transform: var(--bkbg-ec-ttl-text-transform, none);
    letter-spacing: var(--bkbg-ec-ttl-letter-spacing-d, normal);
    word-spacing: var(--bkbg-ec-ttl-word-spacing-d, normal);
    margin: 0 0 6px;
}

.bkbg-ec-subtitle {
    font-family: var(--bkbg-ec-sub-font-family, inherit);
    font-size: var(--bkbg-ec-sub-font-size-d, 15px);
    font-weight: var(--bkbg-ec-sub-font-weight, 400);
    line-height: var(--bkbg-ec-sub-line-height-d, 1.5);
    font-style: var(--bkbg-ec-sub-font-style, normal);
    text-decoration: var(--bkbg-ec-sub-text-decoration, none);
    text-transform: var(--bkbg-ec-sub-text-transform, none);
    letter-spacing: var(--bkbg-ec-sub-letter-spacing-d, normal);
    word-spacing: var(--bkbg-ec-sub-word-spacing-d, normal);
    margin: 0 0 22px;
}

.bkbg-ec-card {
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

/* Rate row */
.bkbg-ec-rate-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.bkbg-ec-rate-label {
    font-weight: 600;
    font-size: 14px;
}

.bkbg-ec-rate-field {
    display: flex;
    align-items: center;
    gap: 6px;
}

.bkbg-ec-input {
    border-radius: 6px;
    padding: 7px 10px;
    font-size: 14px;
    border: 1px solid;
    outline: none;
    transition: border-color 0.2s;
    -moz-appearance: textfield;
}

.bkbg-ec-input::-webkit-outer-spin-button,
.bkbg-ec-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

.bkbg-ec-input:focus { border-color: #f59e0b !important; box-shadow: 0 0 0 2px rgba(245,158,11,0.15); }

.bkbg-ec-sec-title {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 14px;
}

/* Appliance rows */
.bkbg-ec-appliance {
    display: grid;
    grid-template-columns: 1fr 90px 90px auto auto;
    gap: 8px;
    align-items: center;
    margin-bottom: 8px;
}

@media (max-width: 560px) {
    .bkbg-ec-appliance { grid-template-columns: 1fr 80px 80px auto; }
    .bkbg-ec-cost-col { display: none; }
}

.bkbg-ec-unit {
    font-size: 12px;
    opacity: 0.7;
    margin-left: -4px;
}

.bkbg-ec-remove-btn {
    background: #fee2e2;
    color: #991b1b;
    border: none;
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
    transition: background 0.15s;
}

.bkbg-ec-remove-btn:hover { background: #fca5a5; }

.bkbg-ec-add-row {
    display: flex;
    gap: 8px;
    margin-top: 14px;
    flex-wrap: wrap;
}

.bkbg-ec-btn {
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: filter 0.15s;
    color: #fff;
}
.bkbg-ec-btn:hover { filter: brightness(0.9); }
.bkbg-ec-btn-outline { background: transparent !important; border: 2px solid; }

/* Presets */
.bkbg-ec-presets {
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 16px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.bkbg-ec-preset-title {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 10px;
}

.bkbg-ec-preset-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.bkbg-ec-preset-chip {
    border-radius: 20px;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid;
    transition: all 0.15s;
    background: transparent;
}

.bkbg-ec-preset-chip:hover { opacity: 0.8; }

/* Summary bar */
.bkbg-ec-summary {
    border-radius: 10px;
    padding: 20px;
    color: #fff;
    display: flex;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.bkbg-ec-summary-item {
    text-align: center;
    flex: 1;
    min-width: 80px;
}

.bkbg-ec-summary-val {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.2;
}

.bkbg-ec-summary-lbl {
    font-size: 12px;
    opacity: 0.85;
    margin-top: 2px;
}

/* Chart */
.bkbg-ec-chart {
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 16px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.bkbg-ec-chart-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 13px;
}

.bkbg-ec-chart-label { width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bkbg-ec-bar-wrap { flex: 1; height: 16px; background: #f3f4f6; border-radius: 8px; overflow: hidden; }
.bkbg-ec-bar { height: 100%; border-radius: 8px; transition: width 0.4s ease; }
.bkbg-ec-chart-val { width: 60px; text-align: right; font-weight: 600; font-size: 12px; }

/* Carbon */
.bkbg-ec-carbon {
    border-radius: 10px;
    padding: 14px 18px;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.bkbg-ec-carbon-icon { font-size: 24px; }

@media (max-width: 480px) {
    .bkbg-ec-wrap { padding: 16px; }
    .bkbg-ec-summary-val { font-size: 18px; }
}

/* ── Responsive typography ── */
@media (max-width: 1024px) {
    .bkbg-ec-title {
        font-size: var(--bkbg-ec-ttl-font-size-t, var(--bkbg-ec-ttl-font-size-d, 26px));
        line-height: var(--bkbg-ec-ttl-line-height-t, var(--bkbg-ec-ttl-line-height-d, 1.2));
        letter-spacing: var(--bkbg-ec-ttl-letter-spacing-t, var(--bkbg-ec-ttl-letter-spacing-d, normal));
        word-spacing: var(--bkbg-ec-ttl-word-spacing-t, var(--bkbg-ec-ttl-word-spacing-d, normal));
    }
    .bkbg-ec-subtitle {
        font-size: var(--bkbg-ec-sub-font-size-t, var(--bkbg-ec-sub-font-size-d, 15px));
        line-height: var(--bkbg-ec-sub-line-height-t, var(--bkbg-ec-sub-line-height-d, 1.5));
        letter-spacing: var(--bkbg-ec-sub-letter-spacing-t, var(--bkbg-ec-sub-letter-spacing-d, normal));
        word-spacing: var(--bkbg-ec-sub-word-spacing-t, var(--bkbg-ec-sub-word-spacing-d, normal));
    }
}
@media (max-width: 767px) {
    .bkbg-ec-title {
        font-size: var(--bkbg-ec-ttl-font-size-m, var(--bkbg-ec-ttl-font-size-t, var(--bkbg-ec-ttl-font-size-d, 26px)));
        line-height: var(--bkbg-ec-ttl-line-height-m, var(--bkbg-ec-ttl-line-height-t, var(--bkbg-ec-ttl-line-height-d, 1.2)));
        letter-spacing: var(--bkbg-ec-ttl-letter-spacing-m, var(--bkbg-ec-ttl-letter-spacing-t, var(--bkbg-ec-ttl-letter-spacing-d, normal)));
        word-spacing: var(--bkbg-ec-ttl-word-spacing-m, var(--bkbg-ec-ttl-word-spacing-t, var(--bkbg-ec-ttl-word-spacing-d, normal)));
    }
    .bkbg-ec-subtitle {
        font-size: var(--bkbg-ec-sub-font-size-m, var(--bkbg-ec-sub-font-size-t, var(--bkbg-ec-sub-font-size-d, 15px)));
        line-height: var(--bkbg-ec-sub-line-height-m, var(--bkbg-ec-sub-line-height-t, var(--bkbg-ec-sub-line-height-d, 1.5)));
        letter-spacing: var(--bkbg-ec-sub-letter-spacing-m, var(--bkbg-ec-sub-letter-spacing-t, var(--bkbg-ec-sub-letter-spacing-d, normal)));
        word-spacing: var(--bkbg-ec-sub-word-spacing-m, var(--bkbg-ec-sub-word-spacing-t, var(--bkbg-ec-sub-word-spacing-d, normal)));
    }
}