.formula-plotter {
    border: 1px solid #d3dce1;
    border-radius: 8px;
    background: #f7f9fa;
    padding: 20px;
    margin: 24px 0;
    color: #263b48;
}

.formula-plotter [hidden] {
    display: none !important;
}

.formula-plotter label {
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 0.875rem;
    font-weight: 600;
    min-width: 0;
}

.formula-plotter textarea,
.formula-plotter select,
.formula-plotter input[type="number"] {
    width: 100%;
    min-width: 0;
    max-width: 100%;
    border: 1px solid #aabcc6;
    border-radius: 4px;
    padding: 8px;
    background: white;
    color: #243744;
    box-shadow: none;
}

.formula-plotter textarea {
    font-family: monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    resize: vertical;
    white-space: pre;
    overflow: auto;
}

.formula-plotter input[type="range"] {
    width: 100%;
    min-height: 28px;
    accent-color: #800000;
    cursor: pointer;
}

.formula-plotter button {
    border: 1px solid #aabcc6;
    border-radius: 4px;
    padding: 9px 14px;
    background: white;
    color: #263b48;
    cursor: pointer;
    font-weight: 600;
}

.formula-plotter button.formula-plotter__primary {
    background: #800000;
    color: white;
    border-color: #800000;
}

.formula-plotter button:disabled {
    opacity: 0.5;
    cursor: default;
}

.formula-plotter :focus-visible {
    outline: 3px solid #287b9b;
    outline-offset: 2px;
}

.formula-plotter__heading,
.formula-plotter__actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin: 12px 0;
}

.formula-plotter__heading strong {
    flex: 1 1 220px;
    font-size: 1.1rem;
}

.formula-plotter__heading label {
    flex-direction: row;
    align-items: center;
}

.formula-plotter__axes,
.formula-plotter__range {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin: 20px 0;
}

.formula-plotter__range {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.formula-plotter__parameter {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr 1fr;
    gap: 12px;
    align-items: end;
    margin: 12px 0;
}

.formula-plotter__parameters {
    border-top: 1px solid #d3dce1;
}

.formula-plotter .formula-plotter__hint,
.formula-plotter [data-role="edit-state"] {
    font-size: 0.8rem;
    line-height: 1.5;
    color: #4d6270;
    margin: 8px 0;
}

.formula-plotter__status {
    background: #e4eff0;
    border-left: 3px solid #287271;
    padding: 10px 12px;
    font-size: 0.875rem;
}

.formula-plotter__status--error {
    background: #fff0eb;
    border-color: #a13921;
    color: #852d1a;
}

.formula-plotter__chart {
    width: 100%;
    height: auto;
    display: block;
    background: white;
    border: 1px solid #d3dce1;
    border-radius: 5px;
    margin: 16px 0;
}

.formula-plotter__chart text {
    font: 12px sans-serif;
    fill: #4d6270;
}

.formula-plotter__chart .formula-plotter__axis {
    font-weight: 700;
    font-size: 14px;
}

.formula-plotter__grid {
    stroke: #e1e7ec;
    stroke-width: 1;
}

.formula-plotter__curve {
    fill: none;
    stroke: #800000;
    stroke-width: 2.5;
    stroke-linejoin: round;
}

.formula-plotter__point {
    fill: #287b9b;
    stroke: white;
    stroke-width: 2;
}

.formula-plotter__preview-panel {
    margin: 16px 0;
    padding: 16px;
    background: white;
    border: 1px solid #d3dce1;
    border-radius: 5px;
}

.formula-plotter__preview {
    min-height: 48px;
    overflow-x: auto;
}

.formula-plotter__equation {
    padding: 4px 8px;
}

.formula-plotter__equation + .formula-plotter__equation {
    border-top: 1px solid #edf1f4;
}

@media (max-width: 700px) {
    .formula-plotter__axes,
    .formula-plotter__parameter {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}