/* .header-container and .reset-button migrated to Blueprint-A classes
   (.section-card__header + .btn-outline-danger) — see STYLE_GUIDE §4.3. */

/* Table customization */
thead.thead-dark th {
    background-color: var(--primary-color) !important;
    color: var(--neutrals-0) !important;
    padding: var(--spacing-md) !important;
}

thead th:first-child {
    border-top-left-radius: var(--radius-lg) !important;
}

thead th:last-child {
    border-top-right-radius: var(--radius-lg) !important;
}

tbody tr:nth-child(even) {
    background-color: var(--slate-100) !important;
}

tbody tr:nth-child(odd) {
    background-color: var(--surface-bg) !important;
}

th, td {
    padding: var(--spacing-md) !important;
    border: var(--border-thin) solid var(--surface-border) !important;
}

tbody tr:hover {
    background-color: var(--neutrals-0) !important;
}

/* Modal adjustments specific to linear regression */
.linear-modal-message {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

/* ===== Plot Modal ===== */

.plot-modal {
    position: relative;
    width: min(1600px, 98vw);
    height: calc(100vh - 40px);
    background-color: var(--neutrals-0);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    margin: auto;
}

/* Header */
.plot-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-xl);
    border-bottom: var(--border-thin) solid var(--surface-border);
    flex-shrink: 0;
}

.plot-modal-header h2 {
    margin: 0;
    font-size: var(--text-xl);
    color: var(--primary-color);
}

.plot-modal-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.plot-modal-header .modal-close {
    position: static;
    flex-shrink: 0;
}

/* Body */
.plot-modal-body {
    display: flex;
    flex: 1;
    min-height: 0;
}

/* Main area */
.plot-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    padding: 16px;
    gap: 0;
    overflow-y: auto;
}

/* Tabs */
.plot-tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--surface-border);
    flex-shrink: 0;
    margin-bottom: 12px;
}

.plot-tab {
    padding: 8px 20px;
    border: none;
    background: transparent;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--textcolor-50contrast);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color 0.2s, border-color 0.2s;
}

.plot-tab:hover {
    color: var(--primary-color);
}

.plot-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 600;
}

.plot-tab-content {
    display: none;
    flex: 1;
    min-height: 0;
    flex-direction: column;
    gap: 12px;
}

.plot-tab-content.active {
    display: flex;
}

/* Tab hint text */
.tab-hint {
    font-size: 0.85rem;
    color: var(--gray-600);
    margin: 0 0 10px 0;
    padding: 8px 12px;
    background: var(--primary-tint);
    border-left: 3px solid var(--primary-color);
    border-radius: 0 6px 6px 0;
    line-height: 1.45;
}

.tab-hint strong {
    color: var(--textcolor-80contrast);
}

/* Regression warning banner */
.regression-warning {
    padding: 10px 16px;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    line-height: 1.4;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.regression-warning--error {
    background: var(--error-50);
    border: var(--border-thin) solid var(--error-200);
    color: var(--error-800);
}

.regression-warning--warn {
    background: var(--warning-50);
    border: var(--border-thin) solid var(--warning-200);
    color: var(--warning-800);
}

.regression-warning-icon {
    flex-shrink: 0;
    font-size: 1.3rem;
    line-height: 1;
}

/* ===== Chart Grid: Y-selectors | Chart | X-selectors ===== */

.plot-chart-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: 1fr auto;
    grid-template-areas:
        "yaxis chart"
        ".     xaxis";
    gap: 0;
    flex: 1;
    min-height: 0;
}

/* Axis selector wrappers with label */
.axis-selector-wrap {
    display: flex;
    align-items: stretch;
}

.axis-selector-wrap--y {
    grid-area: yaxis;
    flex-direction: row;
}

.axis-selector-wrap--x {
    grid-area: xaxis;
    flex-direction: column;
}

.axis-selector-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--gray-500);
    writing-mode: vertical-lr;
    text-orientation: mixed;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}

.axis-selector-wrap--x .axis-selector-label {
    writing-mode: horizontal-tb;
    padding: 3px 0 0 0;
}

/* Y-axis selector strip (vertical, left of chart) */
.axis-selector--y {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
    overflow-y: auto;
    overflow-x: hidden;
    max-width: 180px;
    min-width: 110px;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) transparent;
}

/* X-axis selector strip (horizontal, below chart) */
.axis-selector--x {
    display: flex;
    flex-direction: row;
    gap: 5px;
    padding: 5px;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) transparent;
}

/* Axis option chips */
.axis-option {
    border: 2px solid var(--surface-border-light);
    border-radius: 8px;
    padding: 8px 12px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background-color: var(--slate-50);
    transition: border-color 0.2s, background-color 0.2s, box-shadow 0.2s;
    flex: 1 1 0;
    gap: 2px;
    min-width: 0;
}

.axis-option.is-selected {
    border-color: var(--primary-color);
    background-color: rgba(var(--primary-rgb), 0.08);
    box-shadow: 0 0 0 1px rgba(var(--primary-rgb), 0.2);
}

.axis-option.is-selected label {
    color: var(--primary-color);
}

.axis-option:hover:not(.is-selected) {
    border-color: var(--gray-300);
    background-color: var(--surface-hover);
}

.axis-option label {
    margin: 0;
    font-weight: 700;
    color: var(--gray-700);
    text-align: center;
    font-size: 17px;
    pointer-events: none;
    white-space: nowrap;
    line-height: 1.3;
}

.axis-option span {
    font-size: 12px;
    color: var(--textcolor-50contrast);
    text-align: center;
    pointer-events: none;
    white-space: nowrap;
    line-height: 1.3;
}

.axis-option span:empty {
    display: none;
}

.axis-option .katex {
    font-size: 1.1em;
}

.axis-option label .katex .katex-html {
    font-weight: 700;
}

.axis-option.is-selected .katex {
    color: var(--primary-color);
}

.current-axes .katex {
    font-size: 0.95em;
}

.axis-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

/* Chart wrapper */
.plot-chart-wrapper {
    grid-area: chart;
    position: relative;
    min-height: 300px;
}

#chartArea {
    width: 100% !important;
    height: 100% !important;
}

/* Regression tab sections */
.regression-section {
    margin-bottom: 20px;
}

.regression-section-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0 0 6px 0;
    padding-bottom: 4px;
    border-bottom: 2px solid rgba(var(--primary-rgb), 0.2);
}

/* Variable descriptions */
.variable-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.variable-card {
    display: flex;
    align-items: baseline;
    gap: 8px;
    border: 1px solid var(--surface-border-light);
    border-radius: 8px;
    padding: 8px 14px;
    background-color: var(--slate-50);
}

.variable-card-symbol {
    font-weight: 700;
    font-size: 14px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.variable-card-desc {
    font-size: 0.85rem;
    color: var(--gray-600);
}

/* Current axes display */
.current-axes {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding: 10px 14px;
    background: var(--slate-50);
    border: var(--border-thin) solid var(--surface-border-light);
    border-radius: var(--radius-lg);
}

.current-axis-label {
    font-size: 0.85rem;
    color: var(--gray-500);
}

.current-axis-item {
    display: flex;
    align-items: baseline;
    gap: 6px;
    font-size: 0.9rem;
}

.current-axis-item strong {
    color: var(--textcolor-80contrast);
}

.current-axis-item span {
    color: var(--primary-color);
    font-weight: 600;
}

/* Regression parameters grid */
.regression-params {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
}

.regression-params:empty::after {
    content: "Wechseln Sie zum Diagramm-Tab und wählen Sie eine Achsenkombination.";
    color: var(--textcolor-10contrast);
    font-size: 0.85rem;
    grid-column: 1 / -1;
    font-style: italic;
}

.constant-box {
    display: flex;
    flex-direction: row;
    align-items: baseline;
    gap: 8px;
    border: 1px solid var(--surface-border-light);
    border-radius: 8px;
    padding: 10px 14px;
    background-color: var(--slate-50);
}

.constant-box-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--textcolor-80contrast);
    min-width: 28px;
    flex-shrink: 0;
}

.constant-box-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
}

.constant-box-value::before {
    content: "= ";
    font-weight: 400;
    color: var(--textcolor-10contrast);
}

.constant-box-unit {
    font-size: 11px;
    color: var(--gray-500);
    flex-shrink: 0;
}

/* Table scroll areas */
.plot-table-scroll {
    max-height: 220px;
    overflow-y: auto;
    border: 1px solid var(--surface-border);
    border-radius: 6px;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--slate-100);
}

.plot-table-scroll--full {
    max-height: none;
    flex: 1;
}

.plot-table-scroll table {
    margin-bottom: 0;
}

.plot-table-scroll::-webkit-scrollbar { width: 8px; }
.plot-table-scroll::-webkit-scrollbar-track { background: var(--slate-100); border-radius: var(--radius-sm); }
.plot-table-scroll::-webkit-scrollbar-thumb { background: var(--primary-color); border-radius: 4px; }

/* ===== Responsive ===== */

@media (max-width: 900px) {
    .axis-selector--y {
        max-width: 110px;
        min-width: 70px;
    }

    .plot-tab {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
}

@media (max-width: 600px) {
    .plot-modal {
        width: 100vw;
        height: 100vh;
        border-radius: 0;
    }

    /* On small screens: Y-axis becomes horizontal strip above chart */
    .plot-chart-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr auto;
        grid-template-areas:
            "yaxis"
            "chart"
            "xaxis";
    }

    .axis-selector-wrap--y {
        flex-direction: column;
    }

    .axis-selector-wrap--y .axis-selector-label {
        writing-mode: horizontal-tb;
        padding: 3px 0 0 0;
    }

    .axis-selector--y {
        flex-direction: row;
        overflow-x: auto;
        overflow-y: hidden;
        max-width: none;
        max-height: 56px;
    }

    .plot-chart-wrapper {
        min-height: 200px;
    }
}

/* Action buttons below table */
.table-actions {
    display: flex;
    gap: 10px;
    padding: 12px 0;
}

.table-actions .btn {
    flex: 1;
}

/* Column info button in table header */
.col-info-btn {
    background: none;
    border: none;
    /* Info-icon on dark thead — literal rgba for controlled contrast */
    color: rgba(var(--neutrals-0-rgb), 0.6);
    cursor: pointer;
    padding: 0;
    margin-left: 4px;
    vertical-align: middle;
    line-height: 1;
    transition: color var(--transition-base);
}

.col-info-btn:hover {
    color: var(--neutrals-0);
}