* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Roboto, system-ui, sans-serif;
        }

        body {
            background: #f4f7fb;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        header {
            background: #1e2b3c;
            color: white;
            padding: 1.5rem 2rem;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }

        header img {
            width: 50px;
            height: auto;
            border-radius: 10px;
            vertical-align: middle;
            margin-right: 10px;
        }

        header h1 {
            font-weight: 400;
            font-size: 1.8rem;
            letter-spacing: 0.5px;
        }

        header p {
            opacity: 0.8;
            margin-top: 0.3rem;
            font-size: 0.95rem;
        }

        nav {
            background: white;
            padding: 0 2rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .tab-btn {
            background: transparent;
            border: none;
            padding: 1rem 1.5rem;
            font-size: 1rem;
            font-weight: 500;
            color: #4a5568;
            cursor: pointer;
            border-bottom: 3px solid transparent;
            transition: 0.2s;
        }

        .tab-btn:hover {
            color: #1e2b3c;
            border-bottom-color: #cbd5e0;
        }

        .tab-btn.active {
            color: #1e2b3c;
            border-bottom-color: #1e2b3c;
            font-weight: 600;
        }

        main {
            flex: 1;
            padding: 2rem;
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
        }

        .card {
            background: white;
            border-radius: 20px;
            padding: 1.5rem;
            box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
            margin-bottom: 2rem;
        }

        h2 {
            font-weight: 500;
            color: #1e2b3c;
            margin-bottom: 1.5rem;
            border-left: 6px solid #1e2b3c;
            padding-left: 1rem;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.95rem;
        }

        th {
            text-align: left;
            background: #f8fafd;
            padding: 0.75rem 0.5rem;
            color: #2d3c4b;
            font-weight: 600;
            border-bottom: 2px solid #e2e8f0;
        }

        td {
            padding: 0.75rem 0.5rem;
            border-bottom: 1px solid #edf2f7;
            color: #2d3748;
        }

        tr:hover td {
            background: #f9fcff;
        }

        .badge {
            background: #e9edf5;
            color: #1e2b3c;
            padding: 0.25rem 0.6rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 500;
            display: inline-block;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.5rem;
            margin-top: 1rem;
        }

        .stat-item {
            background: #f8fafd;
            border-radius: 16px;
            padding: 1.2rem;
            border: 1px solid #e9eef3;
        }

        .stat-item h3 {
            font-size: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.3px;
            color: #4b6a8b;
            margin-bottom: 0.75rem;
        }

        .stat-item p {
            font-size: 2rem;
            font-weight: 300;
            color: #1e2b3c;
        }

        footer {
            text-align: center;
            padding: 1.5rem;
            color: #718096;
            font-size: 0.9rem;
            border-top: 1px solid #e2e8f0;
            background: white;
        }

        .empty-msg {
            padding: 2rem;
            text-align: center;
            color: #a0aec0;
            font-style: italic;
        }