/* ============================================================================
   dreisatzrechner.css – Dreisatz (rule-of-three) calculator
   Scoped to .lo-rule-of-three. Colours follow the lehrer-online palette.
   ============================================================================ */

.lo-rule-of-three {
    --lo-rot-blue-dark: #2b8ba0;
    --color-lo-lightblue: #e1f4f8;
    --lo-error-color: #eb0000;
    --lo-rot-border: #cfe7ee;
    --lo-rot-radius: 6px;
}

.lo-rule-of-three-card {
    background-color: #ffffff;
    border: 4px solid var(--color-lo-blue, #34A6BF);
    border-radius: var(--lo-rot-radius);
    padding: 28px 32px;
    max-width: 720px;
}

.lo-rule-of-three-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 18px;
}

.lo-rule-of-three-label {
    min-width: 220px;
    font-weight: 600;
    color: var(--color-lo-orange, #f28d35);
}

.lo-rule-of-three-arrow {
    display: inline-flex;
    align-items: center;
    font-size: 1.2em;
    color: var(--color-lo-blue, #34A6BF);

    .icon {
        display: block;
        width: 1em;
        height: 1em;
        fill: currentColor;
        flex-shrink: 0;
    }
}

.lo-rule-of-three-field {
    width: 150px;
    padding: 6px 10px;
    margin: 0;
    text-align: right;
    border: 1px solid var(--lo-rot-border);
    border-radius: var(--lo-rot-radius);
    box-sizing: border-box;
    transition: border-color 0.2s ease;
}

.lo-rule-of-three-field:focus {
    border-color: var(--color-lo-blue, #34A6BF);
}

.lo-rule-of-three-field.result-target {
    border: 2px dashed var(--color-lo-orange, #f28d35);
    background-color: #fff6ef;
}

.lo-rule-of-three-field.computed {
    background-color: var(--color-lo-lightblue);
    color: var(--color-lo-orange, #f28d35);
    font-weight: 700;
}

.lo-rule-of-three select {
    width: auto;
    margin: 0;
    padding: 6px 10px;
    border: 1px solid var(--lo-rot-border);
    border-radius: var(--lo-rot-radius);
    background-color: #fff;
    background-image: none;
}

.lo-rule-of-three-example {
    display: inline-block;
    margin-top: 6px;
    font-size: 0.85em;
    color: #666;
}

.lo-rule-of-three-error-row,
.lo-rule-of-three-error-general {
    display: none;
    margin-bottom: 1rem;
    font-size: 0.85em;
    font-weight: 600;
    color: var(--lo-error-color);

    &.active {
        display: block;
    }
}

.lo-rule-of-three-error {
    display: block;
}

.lo-rule-of-three-solution {
    margin-top: 40px;
    max-width: 720px;

    &[hidden] {
        display: none;
    }

    h2 {
        font-size: 1.25em;
        font-weight: 700;
        margin-top: 28px;
        margin-bottom: 14px;
    }
}

.lo-rule-of-three-table {
    border-collapse: collapse;
    background-color: #fff;
    border: 1px solid var(--lo-rot-border);
    border-radius: var(--lo-rot-radius);
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);

    td {
        padding: 10px 18px;
        border-bottom: 1px solid var(--lo-rot-border);
    }

    tr:last-child td {
        border-bottom: none;
    }

    .step-label {
        font-weight: 600;
        color: var(--lo-rot-blue-dark);
        background-color: var(--color-lo-lightblue);
    }

    .cell-left,
    .cell-right {
        text-align: right;
    }

    .cell-arrow {
        color: var(--color-lo-blue, #34A6BF);
        text-align: center;
        vertical-align: middle;

        .icon {
            display: inline-block;
            width: 1em;
            height: 1em;
            fill: currentColor;
        }
    }

    .is-result {
        color: var(--color-lo-orange, #f28d35);
        font-weight: 700;
    }
}

.lo-rule-of-three-formula {
    font-size: 1.1em;
    background-color: #fff;
    border: 1px solid var(--lo-rot-border);
    padding: 12px 18px;
    display: inline-block;
    border-radius: var(--lo-rot-radius);
}

.lo-rule-of-three-relation {
    font-size: 0.9em;
    color: #666;
    margin-top: 8px;
}

@media (max-width: 768px) {
    .lo-rule-of-three-card {
        padding: 20px;
    }

    .lo-rule-of-three-label {
        min-width: 100%;
    }
}