/* CSS STYLES */
:root {
    --primary: #2563eb;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 2rem;
}
.container {
    max-width: 1000px;
    margin: 0 auto;
}
header {
    margin-bottom: 2rem;
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 1rem;
}
h1 { margin: 0; font-size: 2rem; }
.meta { color: #64748b; font-size: 0.9rem; margin-top: 0.5rem; }

/* Grid Layout for Charts */
.dashboard {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}
@media (min-width: 768px) {
    .dashboard { grid-template-columns: 1fr 1fr; }
    .full-width { grid-column: span 2; }
}

.card {
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
}
h2 { margin-top: 0; font-size: 1.25rem; color: #334155; }
canvas { width: 100% !important; height: auto !important; }