:root {
    --bg: #0b1220;
    --panel: #111827;
    --card: #0f172a;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --positive: #22c55e;
    --negative: #ef4444;
    --accent: #2563eb;
}

* {
    box-sizing: border-box;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
}

.report {
    max-width: 1100px;
    margin: auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 1.5rem;
}

/* ================= SUMMARY ================= */

#summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
}

.card {
    background: var(--card);
    border-radius: 18px;
    padding: 1.5rem;
    box-shadow: 0 15px 35px rgba(0,0,0,.35);
}

.card h3 {
    margin: 0 0 .75rem;
    font-size: 1.1rem;
    color: var(--muted);
}

.value {
    font-weight: 700;
}

.positive { color: var(--positive); }
.negative { color: var(--negative); }

/* ================= CHART ================= */

.chart-card {
    margin-top: 2.5rem;
    background: var(--panel);
    border-radius: 22px;
    padding: 1.75rem;
}

.chart-card h2 {
    margin: 0;
    font-size: 1.3rem;
}

canvas {
    width: 100%;
    height: auto;
    margin-top: 1.25rem;
}

/* ================= MOBILE ================= */

@media (max-width: 600px) {
    .card {
        padding: 1.25rem;
    }

    .chart-card {
        padding: 1.25rem;
    }
}