/* SIDEBAR */
.sidebar{position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);background:var(--bg-secondary);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:200;transition:width 0.3s ease;overflow:hidden}
.app.sidebar-collapsed .sidebar{width:var(--sidebar-collapsed)}

.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:18px 16px;border-bottom:1px solid var(--border);min-height:64px}
.sidebar-logo{display:flex;align-items:center;gap:12px;overflow:hidden;white-space:nowrap}
.logo-icon-sm{width:36px;height:36px;background:linear-gradient(135deg,var(--accent),var(--purple));border-radius:9px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;flex-shrink:0}
.sidebar-brand{font-size:15px;font-weight:700;transition:opacity 0.2s ease}
.app.sidebar-collapsed .sidebar-brand{opacity:0;pointer-events:none}
.sidebar-toggle-btn{width:28px;height:28px;border-radius:8px;background:var(--bg-input);border:1px solid var(--border);color:var(--text-muted);display:flex;align-items:center;justify-content:center;font-size:11px;transition:var(--transition);flex-shrink:0}
.sidebar-toggle-btn:hover{background:var(--accent-glow);border-color:var(--accent);color:var(--accent)}
.app.sidebar-collapsed .sidebar-toggle-btn span{transform:rotate(180deg)}
.sidebar-toggle-btn span{display:block;transition:transform 0.3s ease}

.sidebar-user{display:flex;align-items:center;gap:12px;padding:16px;border-bottom:1px solid var(--border);overflow:hidden;white-space:nowrap}
.user-avatar{width:38px;height:38px;background:linear-gradient(135deg,var(--accent),var(--purple));border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;flex-shrink:0}
.user-info{overflow:hidden}
.user-name{display:block;font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.user-role{display:block;font-size:11px;color:var(--accent-light);margin-top:1px}
.app.sidebar-collapsed .user-info{display:none}

.sidebar-nav{flex:1;overflow-y:auto;overflow-x:hidden;padding:12px 0}
.sidebar-nav::-webkit-scrollbar{width:3px}
.sidebar-nav::-webkit-scrollbar-track{background:transparent}
.sidebar-nav::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.nav-section-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);padding:10px 20px 4px;transition:opacity 0.2s ease;white-space:nowrap}
.app.sidebar-collapsed .nav-section-label{opacity:0;height:0;padding:0;overflow:hidden}

.nav-item{display:flex;align-items:center;gap:12px;padding:10px 16px;border-radius:10px;margin:2px 10px;color:var(--text-secondary);font-size:13px;font-weight:500;transition:var(--transition);position:relative;white-space:nowrap;overflow:hidden}
.nav-item:hover{background:var(--bg-card);color:var(--text-primary)}
.nav-item.active{background:var(--accent-glow);color:var(--accent-light);border:1px solid rgba(108,99,255,.25)}
.nav-icon{font-size:17px;flex-shrink:0;width:20px;text-align:center}
.nav-label{flex:1;transition:opacity 0.2s ease}
.app.sidebar-collapsed .nav-label{opacity:0;pointer-events:none}
.nav-badge{background:var(--accent);color:#fff;font-size:10px;font-weight:700;padding:2px 6px;border-radius:10px;flex-shrink:0}
.nav-badge-red{background:var(--red)}
.app.sidebar-collapsed .nav-badge{display:none}

.sidebar-footer{padding:12px;border-top:1px solid var(--border)}
.logout-btn{display:flex;align-items:center;gap:12px;padding:10px 16px;border-radius:10px;width:100%;color:var(--text-muted);font-size:13px;font-weight:500;transition:var(--transition);white-space:nowrap;overflow:hidden}
.logout-btn:hover{background:var(--red-bg);color:var(--red)}
.app.sidebar-collapsed .logout-btn .nav-label{opacity:0}

/* MOBILE SIDEBAR */
@media(max-width:768px){
  .sidebar{transform:translateX(-100%);transition:transform 0.3s ease, width 0.3s ease;width:var(--sidebar-w)!important}
  .sidebar.mobile-open{transform:translateX(0)}
  .sidebar-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:190;display:none}
  .sidebar-overlay.active{display:block}
}

/* TOOLTIP for collapsed items */
.app.sidebar-collapsed .nav-item{position:relative}
.app.sidebar-collapsed .nav-item::after{content:attr(data-tooltip);position:absolute;left:calc(var(--sidebar-collapsed) + 4px);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px 12px;font-size:12px;font-weight:500;color:var(--text-primary);white-space:nowrap;opacity:0;pointer-events:none;transition:opacity 0.2s ease;z-index:300;box-shadow:var(--shadow)}
.app.sidebar-collapsed .nav-item:hover::after{opacity:1}