* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
    }

    ::-webkit-scrollbar {
        width: 6px;
        height: 6px;
    }

    ::-webkit-scrollbar-track {
        background: transparent;
    }

    ::-webkit-scrollbar-thumb {
        background: #cbd5e1;
        border-radius: 3px;
    }

    .dark ::-webkit-scrollbar-thumb {
        background: #475569;
    }

    .sidebar-link {
        transition: all 0.2s ease;
        position: relative;
    }

    .sidebar-link::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 3px;
        height: 0;
        background: linear-gradient(135deg, #3b8bff, #1e6af5);
        border-radius: 0 4px 4px 0;
        transition: height 0.2s ease;
    }

    .sidebar-link:hover::before,
    .sidebar-link.active::before {
        height: 60%;
    }

    .sidebar-link.active {
        background: linear-gradient(135deg, rgba(59, 139, 255, 0.1), rgba(30, 106, 245, 0.05));
        color: #3b8bff;
    }

    .dark .sidebar-link.active {
        background: linear-gradient(135deg, rgba(59, 139, 255, 0.15), rgba(30, 106, 245, 0.08));
    }

    .notification-badge {
        position: absolute;
        top: -4px;
        right: -4px;
        width: 18px;
        height: 18px;
        background: linear-gradient(135deg, #ef4444, #dc2626);
        border-radius: 50%;
        font-size: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-weight: 700;
        border: 2px solid white;
    }

    .dark .notification-badge {
        border-color: #1e293b;
    }

    .status-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
    }

    .status-online {
        background: #22c55e;
        box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
    }

    .status-away {
        background: #f59e0b;
        box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
    }

    .status-offline {
        background: #94a3b8;
    }

    .progress-bar {
        height: 6px;
        border-radius: 3px;
        overflow: hidden;
        background: #e2e8f0;
    }

    .dark .progress-bar {
        background: #334155;
    }

    .progress-fill {
        height: 100%;
        border-radius: 3px;
        transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .modal-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        backdrop-filter: blur(4px);
        z-index: 100;
        display: none;
        align-items: center;
        justify-content: center;
        padding: 1rem;
    }

    .modal-overlay.active {
        display: flex;
    }

    .toast-container {
        position: fixed;
        top: 1rem;
        right: 1rem;
        z-index: 200;
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }

    .sidebar-section-title {
        font-size: 0.65rem;
        font-weight: 700;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        padding: 0.75rem 1.25rem 0.35rem;
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(20px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @keyframes slideInRight {
        from {
            opacity: 0;
            transform: translateX(20px);
        }

        to {
            opacity: 1;
            transform: translateX(0);
        }
    }

    @keyframes scaleIn {
        from {
            opacity: 0;
            transform: scale(0.95);
        }

        to {
            opacity: 1;
            transform: scale(1);
        }
    }

    .animate-fade-in-up {
        animation: fadeInUp 0.5s ease forwards;
    }

    .animate-slide-in-right {
        animation: slideInRight 0.4s ease forwards;
    }

    .animate-scale-in {
        animation: scaleIn 0.2s ease forwards;
    }

    .dropdown-menu {
        display: none;
    }

    .dropdown-menu.active {
        display: block;
    }

    @media (max-width: 1024px) {
        .sidebar-desktop {
            transform: translateX(-100%);
            position: fixed;
            z-index: 50;
        }

        .sidebar-desktop.open {
            transform: translateX(0);
        }
    }

    /* Timeline Specifics */
    .timeline-line {
        position: absolute;
        left: 24px;
        top: 0;
        bottom: 0;
        width: 2px;
        background: #e2e8f0;
        z-index: 0;
    }

    .dark .timeline-line {
        background: #334155;
    }

    .timeline-item {
        position: relative;
        z-index: 1;
        transition: all 0.2s ease;
    }

    .timeline-item:hover .timeline-card {
        border-color: #cbd5e1;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    }

    .dark .timeline-item:hover .timeline-card {
        border-color: #475569;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    }

    .timeline-icon {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        border: 4px solid white;
        position: relative;
        z-index: 2;
    }

    .dark .timeline-icon {
        border-color: #020617;
    }

    /* matches surface-950 background */

    .icon-call {
        background: #dcfce7;
        color: #16a34a;
    }

    .dark .icon-call {
        background: rgba(34, 197, 94, 0.2);
        color: #4ade80;
    }

    .icon-email {
        background: #f3e8ff;
        color: #7c3aed;
    }

    .dark .icon-email {
        background: rgba(168, 85, 247, 0.2);
        color: #a855f7;
    }

    .icon-meeting {
        background: #fef3c7;
        color: #d97706;
    }

    .dark .icon-meeting {
        background: rgba(245, 158, 11, 0.2);
        color: #fbbf24;
    }

    .icon-system {
        background: #e0f2fe;
        color: #0891b2;
    }

    .dark .icon-system {
        background: rgba(6, 182, 212, 0.2);
        color: #22d3ee;
    }

    .icon-note {
        background: #f1f5f9;
        color: #475569;
    }

    .dark .icon-note {
        background: rgba(148, 163, 184, 0.2);
        color: #94a3b8;
    }

    .timeline-card {
        background: white;
        border: 1px solid #e2e8f0;
        border-radius: 0.75rem;
        padding: 1rem;
        margin-left: 1rem;
        transition: all 0.2s ease;
    }

    .dark .timeline-card {
        background: #1e293b;
        border-color: #334155;
    }

    .empty-state {
        display: none;
        padding: 3rem;
        text-align: center;
    }

    .empty-state.active {
        display: block;
    }

    input[type="search"]::-webkit-search-cancel-button {
        display: none;
    }