:root {
            --bg: #0f1724;
            --card: #0b1220;
            --muted: #9aa4b2;
            --accent: #00bcd4;
            --glass: rgba(255, 255, 255, 0.03);
            --success: #16a34a;
            --danger: #ef4444;
        }

        * {
            box-sizing: border-box
        }

        html,
        body {
            height: 100%
        }

        body {
            margin: 0;
            font-family: Inter, system-ui, Segoe UI, Roboto, "Helvetica Neue", Arial;
            background: linear-gradient(180deg, #061021 0%, #071428 100%);
            color: #dbe7f0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        .container {
            max-width: 1200px;
            margin: 28px auto;
            padding: 20px
        }

        header {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 20px
        }

        .logo {
            width: 56px;
            height: 56px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent), #4dd0e1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #04202a;
            font-weight: 700;
            font-size: 18px
        }

        h1 {
            margin: 0;
            font-size: 20px
        }

        p.lead {
            margin: 0;
            color: var(--muted);
            font-size: 13px
        }

        /* cards grid */
        .grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 16px
        }

        .card {
            background: var(--card);
            border-radius: 12px;
            padding: 14px;
            box-shadow: 0 6px 20px rgba(2, 6, 23, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.02)
        }

        .stat-card {
            grid-column: span 3;
            min-height: 84px;
            display: flex;
            flex-direction: column;
            justify-content: center
        }

        .stat-title {
            font-size: 12px;
            color: var(--muted)
        }

        .stat-value {
            font-size: 20px;
            font-weight: 700;
            margin-top: 6px
        }

        /* charts */
        .chart-card {
            grid-column: span 8;
            padding: 18px
        }

        .chart-desc {
            grid-column: span 8;
            padding: 18px;
            text-align: justify;
            text-justify: inter-word;
        }

        .side-card {
            grid-column: span 4;
            padding: 18px
        }

        .full-card {
            grid-column: 1/-1;
            padding: 18px
        }

        /* controls */
        .controls {
            display: flex;
            gap: 8px;
            align-items: center;
            flex-wrap: wrap
        }

        select,
        input[type=range] {
            background: var(--glass);
            border: 1px solid rgba(255, 255, 255, 0.03);
            color: inherit;
            padding: 8px;
            border-radius: 8px
        }

        button {
            background: linear-gradient(90deg, var(--accent), #4dd0e1);
            border: none;
            padding: 8px 12px;
            border-radius: 8px;
            color: #04202a;
            font-weight: 600;
            cursor: pointer
        }

        .muted {
            color: var(--muted);
            font-size: 13px
        }

        footer {
            color: var(--muted);
            margin-top: 18px;
            font-size: 13px
        }

        @media (max-width:900px) {
            .stat-card {
                grid-column: span 6
            }

            .chart-card {
                grid-column: span 12
            }

            .side-card {
                grid-column: span 12
            }
        }

        /* NAVBAR */
        .navbar {
        width: 100%;
        background: #0b1220;
        padding: 10px 0;
        box-shadow: 0 3px 12px rgba(0, 0, 0, 0.3);
        border-bottom: 1px solid rgba(255,255,255,0.05);
        }

        .navbar ul {
        list-style: none;
        margin: 0;
        padding: 0 20px;
        display: flex;
        align-items: center;
        gap: 24px;
        }

        .navbar a {
        text-decoration: none;
        color: #dbe7f0;
        font-size: 15px;
        padding: 8px 4px;
        }

        .navbar a:hover {
        color: var(--accent);
        }

        /* DROPDOWN */
        .dropdown {
        position: relative;
        }

        .dropdown-content {
        display: none;
        position: absolute;
        background: #0f1724;
        min-width: 160px;
        border-radius: 8px;
        padding: 8px 0;
        box-shadow: 0 6px 20px rgba(0,0,0,0.5);
        border: 1px solid rgba(255,255,255,0.05);
        z-index: 20;
        }

        .dropdown-content a {
        display: block;
        padding: 10px 16px;
        color: #dbe7f0;
        white-space: nowrap;
        }

        .dropdown-content a:hover {
        background: rgba(255,255,255,0.05);
        color: var(--accent);
        }

        .dropdown:hover .dropdown-content {
        display: block;
        }