.chart-container svg { display: block; width: 100%; }

.format-radio {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.export-btns {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 8px;
}

.config-panel-body {
    padding: 16px;
    border: 1px solid #dee2e6;
    border-radius: 0 0 4px 4px;
}

.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
    align-items: end;
}

.config-field {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.config-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: #555;
}

.config-check {
    display: flex;
    align-items: center;
    padding-top: 24px;
}

.config-check label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
}

.color-swatch {
    height: 32px;
    padding: 2px 4px;
    cursor: pointer;
}

.chart-tooltip {
    position: absolute;
    pointer-events: none;
    padding: 6px 10px;
    border-radius: 5px;
    white-space: nowrap;
    line-height: 1.5;
    display: none;
    transform: translate(12px, calc(-100% - 8px));
    z-index: 10;
    font-family: system-ui, sans-serif;
}

/* Series panel */
.series-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.series-panel-title {
    font-weight: 700;
    font-size: 0.95rem;
}

.series-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.series-config-card {
    border: 1px solid #dee2e6;
    border-radius: 6px;
    overflow: hidden;
}

.series-config-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: #f8f9fa;
}

.series-name-input {
    max-width: 220px;
}

.series-color-swatch {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    flex-shrink: 0;
    cursor: pointer;
    overflow: hidden;
    position: relative;
    display: inline-block;
    margin: 0;
}

.series-color-swatch input[type=color] {
    position: absolute;
    top: -4px;
    left: -4px;
    width: 26px;
    height: 26px;
    border: none;
    padding: 0;
    cursor: pointer;
    opacity: 0;
}

.series-remove-btn {
    margin-left: auto;
    padding: 0 6px;
    line-height: 1.4;
}

.series-visibility-btn {
    padding: 0 6px;
    line-height: 1.4;
    color: #4f9cf9;
    border: 1px solid #4f9cf9;
    background: transparent;
    font-size: 0.75rem;
}

.series-visibility-btn.is-hidden {
    color: #adb5bd;
    border-color: #adb5bd;
}

.series-card-hidden {
    opacity: 0.5;
}

.palette-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 6px;
}

.palette-swatch-dot {
    display: inline-block;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 1px solid rgba(0,0,0,0.12);
    flex-shrink: 0;
}

.series-config-body {
    padding: 12px;
}

.nav-link-sm {
    padding: 4px 10px;
    font-size: 0.85rem;
}

/* Column type + filter table */
.column-filter-table {
    padding: 8px 16px 4px;
    border: 1px solid #dee2e6;
    border-top: none;
    border-radius: 0 0 4px 4px;
}

.column-filter-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 8px 16px;
    align-items: end;
    padding: 8px 0;
    border-bottom: 1px solid #f0f0f0;
}

.column-filter-row:last-child {
    border-bottom: none;
}

/* Collapsible panel header */
.collapsible-header {
    cursor: pointer;
    user-select: none;
}

.collapsible-header:hover {
    background: #f0f4ff;
}

.collapse-icon {
    display: inline-block;
    font-size: 0.65rem;
    margin-right: 6px;
    transform: rotate(90deg);
    transition: transform 0.18s ease;
    color: #888;
    vertical-align: middle;
}

.collapse-icon.open {
    transform: rotate(180deg);
}