/* ===== SIDEBAR ===== */
        .sidebar {
            position: fixed;
            left: 0; top: 0; bottom: 0;
            width: var(--sidebar-w);
            background: linear-gradient(160deg, #0d0f3a 0%, var(--primary-dark) 35%, var(--deep-koamaru) 75%, #1e2060 100%);
            color: white;
            display: flex;
            flex-direction: column;
            z-index: 100;
            transition: width var(--transition-smooth), transform 0.3s;
            overflow: hidden;
        }

        /* ===== SIDEBAR COLLAPSE BTN ===== */
        .sidebar-collapse-btn {
            position: absolute;
            top: 16px; right: 12px;
            width: 28px; height: 28px;
            background: rgba(255,255,255,0.07);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: 7px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.55);
            transition: background var(--transition-base), color var(--transition-base), transform var(--transition-smooth);
            z-index: 2;
            padding: 0;
        }
        .sidebar-collapse-btn:hover {
            background: rgba(245,10,99,0.2);
            border-color: rgba(245,10,99,0.35);
            color: var(--accent-soft);
        }
        .sidebar-collapse-btn svg {
            width: 15px; height: 15px;
            transition: transform var(--transition-smooth);
        }
        .sidebar.collapsed .sidebar-collapse-btn svg {
            transform: rotate(180deg);
        }
        .sidebar.collapsed .sidebar-collapse-btn {
            color: rgba(255,255,255,0.9);
            background: rgba(255,255,255,0.15);
            border-color: rgba(255,255,255,0.3);
        }

        /* ===== SIDEBAR COLLAPSED STATE ===== */
        .sidebar.collapsed {
            width: var(--sidebar-w-collapsed);
        }
        .sidebar.collapsed .sidebar-brand-text,
        .sidebar.collapsed .sidebar-brand-tagline,
        .sidebar.collapsed .sidebar-header .subtitle,
        .sidebar.collapsed .sidebar-nav-section,
        .sidebar.collapsed .nav-item .nav-label,
        .sidebar.collapsed .sidebar-user-info,
        .sidebar.collapsed .connection-status .status-label,
        .sidebar.collapsed .sidebar-footer {
            display: none;
        }
        .sidebar.collapsed .sidebar-brand {
            justify-content: center;
        }
        .sidebar.collapsed .sidebar-logo-wrap {
            margin: 0 auto;
        }
        .sidebar.collapsed .sidebar-header {
            padding: 60px 8px 16px;
        }
        .sidebar.collapsed .nav-item {
            justify-content: center;
            padding: 12px 0;
            gap: 0;
        }
        .sidebar.collapsed .nav-icon,
        .sidebar.collapsed .nav-item > svg {
            margin: 0 auto;
        }
        .sidebar.collapsed .sidebar-user {
            justify-content: center;
            padding: 8px var(--space-2);
            margin: 0 8px 8px;
        }
        .sidebar.collapsed .sidebar-user-avatar {
            margin: 0 auto;
        }
        .sidebar.collapsed .connection-status {
            justify-content: center;
            padding: var(--space-2) 0;
        }
        /* Tooltip pour les items en mode collapsed */
        .nav-item {
            position: relative;
        }
        .sidebar.collapsed .nav-item::after {
            content: attr(data-tooltip);
            position: absolute;
            left: calc(100% + 10px);
            top: 50%;
            transform: translateY(-50%);
            background: rgba(21, 22, 72, 0.95);
            color: white;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 8px;
            border-radius: 6px;
            white-space: nowrap;
            pointer-events: none;
            opacity: 0;
            transition: opacity 0.15s;
            z-index: 9999;
            border: 1px solid rgba(255,255,255,0.1);
            box-shadow: 0 4px 12px rgba(0,0,0,0.3);
        }
        .sidebar.collapsed .nav-item:hover::after {
            opacity: 1;
        }

        .sidebar::before {
            content: '';
            position: absolute;
            top: -30px; right: -50px;
            width: 220px; height: 220px;
            background: radial-gradient(circle, rgba(245,10,99,0.18) 0%, transparent 65%);
            pointer-events: none;
        }

        .sidebar::after {
            content: '';
            position: absolute;
            bottom: 100px; left: -70px;
            width: 200px; height: 200px;
            background: radial-gradient(circle, rgba(0,0,153,0.25) 0%, transparent 65%);
            pointer-events: none;
        }

        .sidebar-header {
            padding: var(--space-6) var(--space-5) 16px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            position: relative;
            overflow: hidden;
        }

        .sidebar-virgule {
            position: absolute;
            top: 8px; right: 8px;
            width: 48px; height: auto;
            opacity: 0.15;
            pointer-events: none;
        }

        .sidebar-brand {
            display: flex;
            align-items: center;
            gap: var(--space-3);
            margin-bottom: 8px;
        }

        .sidebar-logo-wrap {
            width: 50px; height: 50px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(245,10,99,0.12);
            border-radius: 12px;
            border: 1px solid rgba(245,10,99,0.25);
            padding: 8px;
        }

        .sidebar-logo-wrap svg {
            width: 100%; height: auto;
            filter: drop-shadow(0 1px 6px rgba(245,10,99,0.4));
        }

        .sidebar-brand-text {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .sidebar-brand-name {
            font-size: 21px;
            font-weight: 900;
            letter-spacing: 0.06em;
            color: white;
            line-height: 1;
            text-shadow: 0 0 24px rgba(245,10,99,0.5);
        }

        .sidebar-brand-name span {
            color: var(--accent);
        }

        .sidebar-brand-tagline {
            font-size: 11px;
            color: rgba(255,255,255,0.65);
            letter-spacing: 0.18em;
            text-transform: uppercase;
        }

        .sidebar-header .subtitle {
            font-size: 10.5px;
            color: rgba(255,255,255,0.55);
            letter-spacing: 0.1em;
            text-transform: uppercase;
            padding-left: 2px;
        }

        .sidebar-nav {
            flex: 1;
            padding: 8px 0;
            overflow-y: auto;
        }

        .sidebar-nav-section {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 0.16em;
            color: rgba(255,255,255,0.65);
            padding: 16px var(--space-5) var(--space-1);
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: var(--space-3);
            padding: 12px var(--space-5);
            cursor: pointer;
            transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
            border-left: 3px solid transparent;
            font-size: 18px;
            color: rgba(255,255,255,0.6);
            position: relative;
        }

        .nav-item:hover {
            background: rgba(255,255,255,0.06);
            color: rgba(255,255,255,0.9);
            border-left-color: rgba(245,10,99,0.45);
        }

        .nav-item.active {
            background: linear-gradient(90deg, rgba(245,10,99,0.2) 0%, rgba(245,10,99,0.03) 100%);
            border-left-color: var(--accent);
            color: white;
            font-weight: 600;
        }

        .nav-item.active .nav-icon {
            color: var(--accent-soft);
        }

        .nav-icon {
            width: 26px; height: 26px;
            flex-shrink: 0;
            opacity: 0.75;
            transition: opacity 0.2s, color 0.2s;
        }

        .nav-item:hover .nav-icon, .nav-item.active .nav-icon {
            opacity: 1;
        }

        /* Legacy SVG inside nav-item */
        .nav-item > svg {
            width: 26px; height: 26px;
            flex-shrink: 0;
            opacity: 0.75;
        }

        .nav-item:hover > svg { opacity: 1; }
        .nav-item.active > svg { opacity: 1; color: var(--accent-soft); }

        .sidebar-fox-deco {
            position: absolute;
            bottom: 52px;
            left: 50%;
            transform: translateX(-50%);
            width: 540px;
            opacity: 0.35;
            pointer-events: none;
        }

        .sidebar-fox-deco svg {
            width: 540px;
            height: 449px;
            display: block;
        }

        .connection-status {
            display: flex;
            align-items: center;
            gap: var(--space-2);
            padding: 8px var(--space-5) 8px;
            font-size: 12px;
            color: rgba(255,255,255,0.6);
        }

        .status-dot {
            width: 7px; height: 7px;
            border-radius: 50%;
            background: #ef5350;
            flex-shrink: 0;
        }

        .status-dot.connected { background: #66bb6a; }

        .sidebar-user {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px var(--space-4);
            margin: 0 var(--space-2) 8px;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.2s;
            border: 1px solid rgba(255,255,255,0.07);
        }

        .sidebar-user:hover {
            background: rgba(245,10,99,0.15);
            border-color: rgba(245,10,99,0.3);
        }

        .sidebar-user:hover .sidebar-user-action {
            color: var(--accent-soft);
        }

        .sidebar-user-avatar {
            width: 30px; height: 30px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--primary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: white;
            flex-shrink: 0;
            text-transform: uppercase;
        }

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

        .sidebar-user-name {
            font-size: 12px;
            font-weight: 600;
            color: rgba(255,255,255,0.85);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .sidebar-user-action {
            font-size: 10px;
            color: rgba(255,255,255,0.52);
            margin-top: 1px;
            transition: color 0.2s;
        }

        .sidebar-footer {
            padding: 8px var(--space-5);
            border-top: 1px solid rgba(255,255,255,0.07);
            font-size: 11px;
            color: rgba(255,255,255,0.6);
            letter-spacing: 0.05em;
        }

        /* nav-label visible en mode normal, masqué en mode collapsed */
        .nav-label {
            transition: opacity var(--transition-base);
        }
        .sidebar.collapsed .nav-label {
            display: none;
        }

        /* Scrollbar fine dans la nav */
        .sidebar-nav::-webkit-scrollbar { width: 3px; }
        .sidebar-nav::-webkit-scrollbar-track { background: transparent; }
        .sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 2px; }