/* ==========================================================================
   HEADER, NAVBAR & CASCADING CONTROLS
   ========================================================================== */
header {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    transition: background-color 0.25s ease, border-color 0.25s ease;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.brand-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-title {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.v2-badge {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 6px;
    background-color: var(--primary-light);
    color: var(--primary);
    border: 1px solid rgba(37, 99, 235, 0.3);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.toolbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

/* Responsive Filter Bars & Scope Controls */
.scope-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    align-items: flex-end;
    width: 100%;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

.scope-control {
    display: flex;
    flex-direction: column;
    width: 100%;
    min-width: 0;
}

.scope-control-bar,
.filter-row-grid,
#singleScopeBar {
    display: grid !important;
    align-items: end !important;
}

.scope-control label,
.scope-label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-muted, #64748b);
}

.section-navigation-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 6px;
    margin-bottom: 20px;
    overflow-x: auto;
}

.scope-badge-count {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary);
    background-color: var(--primary-light);
    border: 1px solid rgba(37, 99, 235, 0.3);
    border-radius: 8px;
}