* { box-sizing: border-box; }

body {
    margin: 0;
    padding: 0;
    font-family: Calibri, Arial, sans-serif;
}

.nav-bar {
    display: flex;
    justify-content: center;
    gap: 20px;
    background-color: #f3f3f8;
    padding: 10px 0;
    border-bottom: 1px solid #ddd;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-size: 1rem;
    padding: 6px 12px;
}

.nav-link.active {
    font-weight: bold;
    border-bottom: 2px solid #4b6c9e;
}

.page-title {
    margin: 20px;
    font-size: 2em;
    text-align: center;
    font-weight: bold;
}

/* Mobile-first layout */
.flex-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 0 15px;
}

.flex-item-left,
.flex-item-right {
    width: 100%;
}

.table-wrapper {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

td {
    border: 1px solid black;
    padding: 4px 8px;
    font-size: 11pt;
}

/* Desktop layout */
@media (min-width: 900px) {
    .flex-container {
        flex-direction: row;
        justify-content: center;
        gap: 40px;
    }

    .flex-item-left,
    .flex-item-right {
        max-width: 500px;
    }
}

/* Chart containers */
.chart-container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto 30px auto;
    padding: 0 15px;
}

.chart-title {
    text-align: center;
    margin-bottom: 10px;
    font-size: 1.2em;
    font-weight: bold;
}

canvas {
    width: 100% !important;
    height: auto !important;
}