.formula {
    background: rgba(30, 136, 229, 0.08);
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    margin: 20px 0;
    overflow-x: auto;
    border-left: 5px solid var(--primary-color);
    font-size: 1.1rem;
    border: 1px solid var(--card-border);
    color: #FFFFFF !important;
}

.expert-tip {
    border-left: 4px solid #ffc107;
    padding: 15px 20px;
    background: rgba(255, 193, 7, 0.08);
    margin: 15px 0;
    font-style: italic;
    border: 1px solid rgba(255, 193, 7, 0.2);
    border-radius: 8px;
    color: var(--paragraph-color);
}

.confusion-matrix-container {
    margin: 25px 0;
    padding: 20px;
    background: rgba(30, 136, 229, 0.05);
    border: 1px solid var(--card-border);
    border-radius: 12px;
}

.confusion-matrix {
    max-width: 400px;
    margin: 20px auto;
}

.matrix-table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
}

.matrix-table td {
    border: 1px solid var(--card-border);
    padding: 12px;
    text-align: center;
    color: var(--paragraph-color);
}

.matrix-header {
    background: rgba(30, 136, 229, 0.1);
    font-weight: bold;
    color: var(--primary-color);
}

.matrix-label {
    background: rgba(30, 136, 229, 0.08);
    font-weight: bold;
    color: var(--heading-color);
}

.tp { background-color: rgba(40, 167, 69, 0.2); }
.tn { background-color: rgba(40, 167, 69, 0.15); }
.fp { background-color: rgba(220, 53, 69, 0.2); }
.fn { background-color: rgba(255, 193, 7, 0.2); }

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.metric-box {
    background: rgba(30, 136, 229, 0.08);
    border: 1px solid var(--card-border);
    padding: 15px;
    border-radius: 8px;
    text-align: center;
}

.metric-label {
    color: var(--secondary-color);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.metric-value {
    color: var(--heading-color);
    font-size: 1.3rem;
    font-weight: bold;
}

.visualization-container {
    margin: 25px 0;
    padding: 20px;
    background: rgba(30, 136, 229, 0.05);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    position: relative;
    width: 100%;
    height: 420px;
}

.viz-title {
    color: var(--heading-color);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    text-align: center;
}

canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
    max-width: 100%;
}

.tool-card {
    margin: 15px 0;
    padding: 20px;
    border: 1px solid var(--card-border);
    border-radius: 10px;
    background: rgba(30, 136, 229, 0.05);
    transition: transform 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(30, 136, 229, 0.15);
    background: rgba(30, 136, 229, 0.08);
}

.tool-card h3 {
    margin-top: 0;
    color: var(--heading-color);
}

.section-title {
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
    margin-bottom: 25px;
    padding-bottom: 10px;
    color: var(--heading-color);
}

.metric-caption {
    color: var(--secondary-color);
}

.metric-list {
    color: var(--paragraph-color);
    margin: 10px 0;
}

.metric-section-title {
    margin-top: 15px;
}

.table-caption {
    margin-top: 15px;
    text-align: center;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

.callout-section {
    background: rgba(30, 136, 229, 0.08);
    border: 1px solid rgba(30, 136, 229, 0.2);
}

.article-cta {
    margin: 0;
    color: #FFFFFF;
}

.article-cta a {
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .visualization-container {
        height: 280px;
        padding: 12px;
    }

    .viz-title {
        font-size: 1rem;
    }

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

    .metrics-grid {
        grid-template-columns: 1fr;
    }
}