/* ─────────────────────────────────────────────────────────────────
   Explore View Modes — Story 4.4
   Table | Chart | KPI toggle, chart toolbar, and KPI grid.
   ───────────────────────────────────────────────────────────────── */

/* ── View mode toggle ─────────────────────────────────────────── */

.explore-view-toggle {
    display: inline-flex;
    align-items: stretch;
    gap: 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    overflow: hidden;
    height: 34px;
}

.explore-view-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0 0.75rem;
    font-family: var(--font-body, "Roboto", sans-serif);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
    white-space: nowrap;
}

.explore-view-btn:not(:last-child) {
    border-right: 1px solid var(--border-subtle);
}

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

.explore-view-btn--active {
    background: var(--accent);
    color: var(--bg-primary);
    font-weight: 600;
}

.explore-view-btn--active:hover {
    background: var(--accent-hover);
    color: var(--bg-primary);
}

/* ── Chart container ──────────────────────────────────────────── */

.explore-chart-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md, 1rem);
    padding: var(--spacing-md, 1rem) 0;
}

/* ── Chart toolbar ────────────────────────────────────────────── */

.explore-chart-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm, 0.5rem);
    padding: var(--spacing-sm, 0.5rem) var(--spacing-md, 1rem);
    background: var(--bg-secondary);
    border-radius: var(--radius-md, 0.5rem);
    flex-wrap: wrap;
}

.explore-chart-toolbar-left,
.explore-chart-toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm, 0.5rem);
}

.explore-chart-toolbar-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
}

/* ── Chart type toggle ────────────────────────────────────────── */

.explore-chart-type-toggle {
    display: inline-flex;
    gap: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm, 0.25rem);
    overflow: hidden;
}

.explore-chart-type-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
    white-space: nowrap;
}

.explore-chart-type-btn:not(:last-child) {
    border-right: 1px solid var(--border-subtle);
}

.explore-chart-type-btn:hover {
    background: color-mix(in srgb, var(--accent) 8%, transparent);
    color: var(--text-primary);
}

.explore-chart-type-btn--active {
    background: var(--accent);
    color: var(--bg-primary);
    font-weight: 600;
}

/* ── Chart size toggle ────────────────────────────────────────── */

.explore-chart-size-btn {
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm, 0.25rem);
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease;
}

.explore-chart-size-btn:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.explore-chart-size-btn--active {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
    font-weight: 600;
}

/* ── Chart body ───────────────────────────────────────────────── */

.explore-chart-body {
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md, 0.5rem);
    overflow: hidden;
    transition: height 0.2s ease;
}

.explore-chart-body--compact {
    height: 300px;
}

.explore-chart-body--expanded {
    height: 500px;
}

.explore-chart-graph {
    width: 100%;
    height: 100%;
}

/* ── KPI container ────────────────────────────────────────────── */

.explore-kpi-container {
    padding: var(--spacing-md, 1rem) 0;
}

.explore-kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--spacing-md, 1rem);
}

.explore-kpi-empty {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    text-align: center;
    color: var(--text-muted);
}

.explore-kpi-empty-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

/* ── Responsive ───────────────────────────────────────────────── */

@media (max-width: 768px) {
    .explore-chart-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .explore-chart-toolbar-left,
    .explore-chart-toolbar-right {
        flex-wrap: wrap;
    }

    .explore-chart-body--compact {
        height: 250px;
    }

    .explore-chart-body--expanded {
        height: 350px;
    }

    .explore-kpi-grid {
        grid-template-columns: 1fr;
    }
}