/* ═══════════════════════════════════════════════════════════
   Toggles & mode buttons — extracted from TNonline list/report
   pages (FractionCombinedReport tab-bar, Reports format-toggle,
   CustomerDistribution grouping buttons, EnvironmentReport
   view-toggle toolbar).

   Four families of view-mode controls, all teal-active:
     1. .tn-segment        — pill tabs in a padded track
     2. .tn-segmented      — connected buttons, joined borders
     3. .tn-grouping       — labelled outlined toggle buttons
     4. .tn-view-toggle    — compact/expand toolbar buttons
   Sizing is in em so each control scales with its font-size.
   ═══════════════════════════════════════════════════════════ */

/* ── 1. Pill-tab segment (.tn-segment > .tn-segment-item) ── */
.tn-segment {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 0.5em;
    padding: 4px;
    background: var(--tn-bg-page);
    border: 1px solid var(--tn-border);
    border-radius: var(--tn-radius);
}

.tn-segment-item {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    padding: 0.5em 1.25em;
    border: none;
    border-radius: var(--tn-radius-sm);
    background: transparent;
    color: var(--tn-text-secondary);
    font-size: var(--tn-font-size-sm);
    font-weight: 500;
    font-family: var(--tn-font-family);
    cursor: pointer;
    transition: background var(--tn-transition), color var(--tn-transition);
}

.tn-segment-item:hover {
    background: var(--tn-bg-hover);
    color: var(--tn-text-primary);
}

.tn-segment-item.is-active {
    background: var(--tn-accent);
    color: #fff;
    box-shadow: var(--tn-shadow-sm);
}

.tn-segment-item i {
    font-size: 0.9em;
}

/* ── 2. Connected segmented control (.tn-segmented > .tn-segmented-btn) ── */
.tn-segmented {
    display: inline-flex;
    flex-wrap: wrap;
    border: 1px solid var(--tn-border);
    border-radius: var(--tn-radius);
    overflow: hidden;
    width: fit-content;
}

.tn-segmented-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    padding: 0.66em 1.33em;
    border: none;
    background: var(--tn-bg-card);
    color: var(--tn-text-secondary);
    font-size: var(--tn-font-size-sm);
    font-weight: 500;
    font-family: var(--tn-font-family);
    cursor: pointer;
    transition: all var(--tn-transition);
}

.tn-segmented-btn:not(:last-child) {
    border-right: 1px solid var(--tn-border);
}

.tn-segmented-btn:hover {
    background: var(--tn-bg-page);
    color: var(--tn-text-primary);
}

.tn-segmented-btn.is-active {
    background: var(--tn-accent);
    color: #fff;
}

.tn-segmented-btn.is-active:hover {
    background: var(--tn-accent-hover);
}

.tn-segmented-btn:focus-visible {
    outline: none;
    box-shadow: inset 0 0 0 2px var(--tn-accent);
}

.tn-segmented-btn i {
    font-size: 1em;
}

/* ── 3. Grouping toggle (label + .tn-grouping-btn) ── */
.tn-grouping {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5em;
}

.tn-grouping-label {
    font-size: var(--tn-font-size-xs);
    font-weight: 600;
    color: var(--tn-text-secondary);
}

.tn-grouping-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    padding: 0.4em 1em;
    border: 1px solid var(--tn-border);
    border-radius: var(--tn-radius);
    background: var(--tn-bg-card);
    color: var(--tn-text-secondary);
    font-size: var(--tn-font-size-xs);
    font-weight: 500;
    font-family: var(--tn-font-family);
    cursor: pointer;
    transition: all var(--tn-transition);
}

.tn-grouping-btn:hover {
    background: var(--tn-bg-hover);
    color: var(--tn-text-primary);
}

.tn-grouping-btn.is-active {
    background: var(--tn-accent);
    color: #fff;
    border-color: var(--tn-accent);
}

/* ── 4. View-toggle toolbar (compact vs non-compact, etc.) ── */
.tn-table-toolbar {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 6px;
    padding: 0 0 8px;
}

.tn-view-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    padding: 0.33em 0.83em;
    background: var(--tn-bg-page);
    border: 1px solid var(--tn-border);
    border-radius: var(--tn-radius-sm);
    color: var(--tn-text-secondary);
    font-size: var(--tn-font-size-xs);
    font-family: inherit;
    cursor: pointer;
    transition: all var(--tn-transition);
}

.tn-view-toggle:hover {
    background: var(--tn-bg-hover);
    color: var(--tn-text-primary);
    border-color: var(--tn-accent);
}

.tn-view-toggle.is-active {
    background: var(--tn-accent-light);
    color: var(--tn-accent);
    border-color: var(--tn-accent);
}

.tn-view-toggle i {
    font-size: 0.9em;
}

/* On narrow screens the toolbar centers and controls can wrap freely */
@media (max-width: 640px) {
    .tn-table-toolbar {
        justify-content: flex-start;
    }

    .tn-segment,
    .tn-segmented {
        width: 100%;
    }

    .tn-segment-item,
    .tn-segmented-btn {
        flex: 1 1 auto;
        justify-content: center;
    }
}