/* --- Custom properties -------------------------------------------------- */
:root {
    --color-primary: #2C7A7B;
    --color-primary-light: #E6FFFA;
    --color-primary-dark: #1A5456;
    --color-accent: #38B2AC;
    --color-bg: #F7FAFC;
    --color-surface: #FFFFFF;
    --color-border: #E2E8F0;
    --color-text: #1A202C;

    --radius-sm: 6px;
    --radius-md: 10px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);

    --nav-height: 52px;
    --sidebar-width: 380px;
    --font-size-base: 1.0rem;   /* 14px — body / sidebar controls */
    --font-size-label: 0.875rem;   /* 12px — section titles, labels, matrix cells */
    --transition-fast: 150ms ease;
}

html,
body {
    margin: 0;
    padding: 0;
    height: 100%;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-size: var(--font-size-base);
}

/* --- App container (top-nav + body row) --------------------------------- */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100%;
    overflow: hidden;
}

.app-body {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* --- Top nav bar -------------------------------------------------------- */
.nav-bar {
    height: var(--nav-height);
    min-height: var(--nav-height);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 12px;
    z-index: 10;
}

/* Shiny wraps dynamic UI outputs in a span; make it not break flex layout */
.nav-bar > .shiny-html-output {
    display: contents;
}

.nav-bar .nav-tags {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-bar .nav-btn {
    height: 32px;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    background: #F8FAFC;
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast), color var(--transition-fast);
    font-size: var(--font-size-label);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 0 14px;
    white-space: nowrap;
}

.nav-bar .nav-btn:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-color: #BEE3F8;
}

.nav-bar .nav-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* --- Context sidebar ---------------------------------------------------- */
.context-sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    z-index: 5;
}

.sidebar-header {
    position: sticky;
    top: 0;
    background: var(--color-surface);
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
    z-index: 2;
}

.sidebar-header h2 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
}

.sidebar-header .subtitle {
    font-size: var(--font-size-label);
    color: var(--color-text);
    margin-top: 2px;
}

.sidebar-body {
    flex: 1;
    padding: 12px 16px;
    overflow-y: auto;
}

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

/* --- Main workspace ----------------------------------------------------- */
.main-workspace {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--color-bg);
}

.workspace-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-surface);
}

.workspace-header h1 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
}

.workspace-body {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
}

/* --- Sidebar sections --------------------------------------------------- */
.sidebar-section {
    margin-bottom: 16px;
}

.sidebar-section-title {
    font-size: var(--font-size-label);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-text);
    margin-bottom: 8px;
    margin-top: 12px;
}

.sidebar-section .sidebar-section-title:first-child {
    margin-top: 0;
}

/* --- Group headers ------------------------------------------------------ */
.group-header {
    font-size: var(--font-size-label);
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--color-text);
    padding: 12px 0 2px;
    margin-top: 4px;
    margin-bottom: 12px;
}

/* --- Empty / instruction state ------------------------------------------ */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 64px 24px;
    text-align: center;
    color: var(--color-text);
}

.empty-state.compact {
    padding: 20px 12px;
}

/* --- Selection sidebar -------------------------------------------------- */
.selection-sidebar {
    transition: width var(--transition-fast);
}

.selection-sidebar.collapsed {
    width: 92px;
    min-width: 92px;
}

.selection-sidebar .sidebar-text {
    font-size: var(--font-size-base);
    color: var(--color-text);
}

.selection-sidebar .sidebar-header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 10px;
}

/* Dataset row: toggle + label + filter button on one line */
.selection-sidebar .dataset-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.125rem 0;
}

.selection-sidebar .dataset-row-label {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.selection-sidebar .btn-filter-dataset {
    flex-shrink: 0;
    font-size: var(--font-size-label);
    padding: 0.125rem 0.4rem;
    line-height: 1.4;
    border-radius: 3px;
}

.selection-sidebar .dataset-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* Tighten up Shiny's switch input inside dataset rows */
.selection-sidebar .dataset-item > .shiny-input-container {
    margin: 0;
    width: auto;
    flex: 0 0 auto;
}

.selection-sidebar .dataset-item > .shiny-input-container .form-switch {
    margin: 0;
    min-height: 0;
}

.selection-sidebar .dataset-item > .shiny-input-container .form-check-input {
    margin-top: 0;
}

.selection-sidebar .dataset-item > .shiny-input-container label {
    display: none;
}

/* Collapse toggle button */
.btn-collapse-sidebar {
    width: 30px;
    height: 30px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.btn-collapse-sidebar:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

/* --- Intersection matrix ------------------------------------------------ */
.matrix-summary-table {
    width: 100%;
    table-layout: fixed;
    border-spacing: 0;
    border-collapse: collapse;
    font-size: var(--font-size-label);
}

.matrix-summary-table th,
.matrix-summary-table td {
    border-bottom: 1px solid #EDF2F7;
    border-right: 1px solid #EDF2F7;
}

.matrix-summary-table .matrix-row-header {
    position: sticky;
    left: 0;
    z-index: 2;
    background: #F8FAFC;
    text-align: left;
    width: 20%;
}

.matrix-summary-table .matrix-col-header {
    background: #F8FAFC;
    text-align: center;
}

.matrix-summary-table .matrix-header-name {
    font-size: var(--font-size-label);
    font-weight: 700;
    color: var(--color-text);
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    padding: 8px;
}

.matrix-summary-table .matrix-row-label {
    position: sticky;
    left: 0;
    z-index: 1;
    background: #FFFFFF;
    font-size: var(--font-size-label);
    font-weight: 600;
    color: var(--color-text);
    text-align: left;
    padding: 10px 12px;
}

.matrix-summary-table .matrix-cell-empty {
    background: #F8FAFC;
}

.matrix-summary-table .matrix-cell-diagonal {
    background: #EBF8FF;
    padding: 0;
}

.matrix-summary-table .matrix-cell-interactive {
    padding: 0;
}

.matrix-summary-table .matrix-cell-diagonal:hover,
.matrix-summary-table .matrix-cell-interactive:hover {
    background: #4A5568;
}

.matrix-cell-button {
    width: 100%;
    height: 100%;
    display: block;
    padding: 10px 8px;
    border: none;
    background: transparent;
    color: var(--color-text);
    font-size: var(--font-size-label);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
    cursor: pointer;
    text-align: center;
    transition: color var(--transition-fast);
}

.matrix-summary-table .matrix-cell-diagonal:hover .matrix-cell-button,
.matrix-summary-table .matrix-cell-interactive:hover .matrix-cell-button {
    color: #FFFFFF;
}

/* --- Dataset filter modal ----------------------------------------------- */
.modal-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.filter-option-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 10px;
    background: #FFFFFF;
}

.filter-option-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}

.filter-option-title {
    font-size: var(--font-size-label);
    font-weight: 700;
    color: var(--color-text);
}

/* --- GitHub repo badge -------------------------------------------------- */
.nav-bar > a.github-badge {
    margin-left: auto;
}

.github-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid var(--color-border, #d0d7de);
    background: var(--color-bg-subtle, #f6f8fa);
    color: var(--color-text, #24292f);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
}

.github-badge:hover {
    background: var(--color-bg-muted, #eaeef2);
    text-decoration: none;
    color: var(--color-text, #24292f);
}

.github-badge-version {
    margin-left: 6px;
    padding: 1px 6px;
    border-radius: 10px;
    background: var(--color-primary, #0969da);
    color: #fff;
    font-size: var(--font-size-label);
    font-weight: 600;
}