* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #0b0f17;
    color: #e8edf5;
    font-family: Arial, sans-serif;
}

header {
    padding: 18px 28px;
    background: #111827;
    border-bottom: 1px solid #263244;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    margin: 0;
    font-size: 24px;
}

.status {
    color: #9ca3af;
}

.dashboard {
    padding: 24px;
}

.cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-bottom: 20px;
}

.card, .panel {
    background: #111827;
    border: 1px solid #263244;
    border-radius: 10px;
    padding: 18px;
}

.card .label {
    color: #8f9bad;
    font-size: 13px;
}

.card .value {
    font-size: 25px;
    margin-top: 8px;
    font-weight: bold;
}

.chart {
    height: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #718096;
}

.bottom {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
}

h2 {
    margin-top: 0;
    font-size: 17px;
}

@media (max-width: 800px) {
    .cards, .bottom {
        grid-template-columns: 1fr;
    }
}