/* ===========================================
   MFK Steuerrechner
   Follows sow design system — no custom form styles needed.
   Only panel switching, result box, and validation.
   =========================================== */

/* Category panel visibility */
.mfk-steuerrechner .mfk-category-panel {
    display: none;
}

.mfk-steuerrechner .mfk-category-panel.active {
    display: block;
}

/* Result box - matches Grundstueckgewinnsteuer #ergebnis */
.mfk-steuerrechner .mfk-result-box {
    margin: var(--spacer-12) 0;
    background: var(--color-background-dark);
    padding: var(--card-padding);
    padding-bottom: var(--spacer-12);
    border-radius: var(--border-radius);
}

/* Result table - matches Grundstueckgewinnsteuer .result-tabelle */
.mfk-steuerrechner .mfk-result-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacer-6);
}

.mfk-steuerrechner .mfk-result-table th,
.mfk-steuerrechner .mfk-result-table td {
    padding: var(--spacer-3) 0;
}

.mfk-steuerrechner .mfk-result-table th {
    text-align: left;
    font-weight: var(--font-weight-regular);
}

.mfk-steuerrechner .mfk-result-table .num {
    text-align: right;
    font-weight: var(--font-weight-bold);
}

/* Difference row - highlight like sum row */
.mfk-steuerrechner .mfk-difference-row th,
.mfk-steuerrechner .mfk-difference-row td {
    border-top: 1px solid var(--color-line-light);
    padding-top: var(--spacer-6);
    font-weight: var(--font-weight-bold);
}

.mfk-steuerrechner .mfk-difference-row.mfk-positive .num {
    color: var(--color-primary);
}

.mfk-steuerrechner .mfk-difference-row.mfk-negative .num {
    color: var(--color-success, #28a745);
}

.mfk-steuerrechner .mfk-difference-row.mfk-neutral .num {
    color: inherit;
}

.mfk-steuerrechner .mfk-difference-percent {
    font-weight: var(--font-weight-regular);
    font-size: var(--font-size-sm);
    margin-left: var(--spacer-2);
}

/* Info toggle (tooltip on label) */
.mfk-steuerrechner .mfk-info-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    margin-left: 0.3em;
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    font: inherit;
    color: inherit;
    line-height: inherit;
}

/* Screen reader only utility */
.mfk-steuerrechner .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.mfk-steuerrechner .mfk-info-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--font-color-light, #666);
    line-height: 1;
}

.mfk-steuerrechner .mfk-info-icon svg {
    width: 1em;
    height: 1em;
}

.mfk-steuerrechner .mfk-info-toggle:hover .mfk-info-icon,
.mfk-steuerrechner .mfk-info-toggle:focus .mfk-info-icon {
    color: var(--color-primary, #c00);
}

/* Law link (external PDF link on label) */
.mfk-steuerrechner .mfk-law-link {
    display: inline-flex;
    align-items: center;
    color: var(--font-color-light, #666);
    text-decoration: none;
}

.mfk-steuerrechner .mfk-law-link:hover,
.mfk-steuerrechner .mfk-law-link:focus {
    color: var(--color-primary, #c00);
}

.mfk-steuerrechner .mfk-info-tooltip {
    display: none;
    position: absolute;
    left: 50%;
    bottom: calc(100% + 8px);
    transform: translateX(-50%);
    padding: 0.5em 0.75em;
    background: var(--color-black, #1a1a2e);
    color: #fff;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-regular);
    white-space: nowrap;
    border-radius: var(--border-radius);
    z-index: 10;
    pointer-events: none;
}

.mfk-steuerrechner .mfk-info-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--color-black, #1a1a2e);
}

.mfk-steuerrechner .mfk-info-toggle:hover .mfk-info-tooltip,
.mfk-steuerrechner .mfk-info-toggle:focus .mfk-info-tooltip {
    display: block;
}

/* Label hint (small text next to label) */
.mfk-steuerrechner .mfk-label-hint {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-regular);
    color: var(--font-color-light, #666);
    margin-top: 0.15em;
}

/* Config error message */
.mfk-steuerrechner .mfk-config-error {
    padding: var(--spacer-6);
    background-color: rgba(227, 0, 15, 0.08);
    border: 1px solid var(--color-primary, #c00);
    border-radius: var(--border-radius);
    color: var(--color-primary, #c00);
}

.mfk-steuerrechner .mfk-config-error p {
    margin-top: var(--spacer-3);
    font-size: var(--font-size-sm);
    color: var(--font-color);
    word-break: break-word;
}

/* Validation message */
.mfk-steuerrechner .mfk-validation-message {
    margin-top: var(--spacer-6);
    padding: var(--spacer-3) var(--spacer-6);
    background-color: rgba(227, 0, 15, 0.1);
    border: 1px solid var(--color-primary);
    border-radius: var(--border-radius);
    color: var(--color-primary);
    font-size: var(--font-size-sm);
}