/* ═══════════════════════════════════════════════════
   SIDEBAR NAVIGATION — ImportControl
   ═══════════════════════════════════════════════════ */

.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background: var(--surface-card);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: var(--z-sidebar);
    transition: transform var(--transition-slow);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.sidebar-brand {
    padding: var(--space-5) var(--space-5) var(--space-4);
    border-bottom: 1px solid var(--border-subtle);
}

.sidebar-brand h1 {
    font-size: var(--text-lg);
    font-weight: var(--weight-bold);
    margin: 0;
    color: var(--brand-primary);
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.sidebar-brand h1 span {
    color: var(--text-primary);
    font-weight: var(--weight-semibold);
}

.sidebar-brand small {
    display: block;
    color: var(--text-muted);
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: var(--space-1);
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-2) 0;
    overflow-y: auto;
}

.sidebar-section {
    padding: var(--space-4) var(--space-5) var(--space-1-5);
    font-size: 11px;
    font-weight: var(--weight-semibold);
    color: var(--text-muted);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-5);
    margin: 0 var(--space-2);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--text-base);
    font-weight: var(--weight-regular);
    transition: background var(--transition), color var(--transition);
    border-radius: var(--radius-sm);
    cursor: pointer;
    line-height: 1;
    min-height: 36px;
}

.sidebar-link:hover {
    color: var(--text-primary);
    background: var(--surface-hover);
    text-decoration: none;
}

.sidebar-link.active {
    color: var(--brand-primary);
    background: var(--surface-selected);
    font-weight: var(--weight-medium);
}

.sidebar-link i {
    font-size: 18px;
    width: 20px;
    text-align: center;
    color: var(--text-muted);
    flex-shrink: 0;
}

.sidebar-link.active i {
    color: var(--brand-primary);
}

.sidebar-link .badge {
    margin-left: auto;
    background: var(--brand-primary);
    color: var(--text-inverse);
    font-size: 10px;
    padding: 1px 7px;
    border-radius: var(--radius-pill);
    font-weight: var(--weight-semibold);
    line-height: 1.5;
    font-family: var(--font-mono);
}

.sidebar-footer {
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    gap: var(--space-2-5);
}

.sidebar-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: var(--brand-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: var(--weight-semibold);
    color: var(--text-inverse);
    flex-shrink: 0;
}

.sidebar-user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-user-name {
    font-size: 13px;
    font-weight: var(--weight-medium);
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: var(--text-xs);
    color: var(--text-muted);
}

.sidebar-logout {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-1-5);
    font-size: 16px;
    transition: color var(--transition), background var(--transition);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-logout:hover {
    color: var(--danger);
    background: var(--danger-bg);
}

.sidebar-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-default);
    color: var(--text-primary);
    padding: var(--space-1-5) var(--space-2);
    border-radius: var(--radius-sm);
    font-size: 18px;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition);
}

.sidebar-toggle:hover {
    background: var(--surface-hover);
}

.mobile-sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 200;
}

@media (max-width: 768px) {
    .sidebar {
        width: 80%;
        max-width: 320px;
        transform: translateX(-100%);
        z-index: 201 !important;
        will-change: transform;
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .sidebar-toggle { display: inline-flex; }
    .main-content { margin-left: 0; }
}