/* Windows 95 Window/Panel Style */
.card,
.chart-container {
    background: var(--bg-surface);
    padding: 24px;
    /* Outset Border (3D Raised) - more prominent */
    border-top: 2px solid var(--border-light);
    border-left: 2px solid var(--border-light);
    border-bottom: 2px solid var(--border-black);
    border-right: 2px solid var(--border-black);
    box-shadow:
        inset 1px 1px 0px #ffffff,
        inset -1px -1px 0px var(--border-gray),
        2px 2px 0px rgba(0, 0, 0, 0.2);
    margin-bottom: 24px;
    position: relative;
    color: var(--text-main);
}

/* Windows 95 Title Bar for Cards */
.card h3,
.chart-container h3 {
    background-color: var(--primary);
    color: #ffffff;
    padding: 3px 6px;
    margin: -22px -22px 16px -22px;
    /* Leave small silver margin around title bar */
    font-family: inherit;
    font-size: 11px;
    letter-spacing: 0.3px;

    /* Flexbox for title and controls */
    display: flex;
    justify-content: space-between;
    align-items: center;
}