.meth-card {
    background: var(--card-bg); /* Use your existing variable */
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: transform 0.2s ease;
}

.meth-card:hover {
    transform: translateY(-5px);
}

.meth-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 15px;
}

.formula-box {
    background: rgba(0, 0, 0, 0.2);
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
    width: fit-content;
    min-width: 100px;
}

.logic-callout {
    border-left: 4px solid var(--blue);
    background: rgba(0, 123, 255, 0.05);
    border-radius: 0 12px 12px 0;
}


/* ------------------------------------------------------ */


.methodology-container {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
    font-family: 'Inter', system-ui, sans-serif;
}

/* Section Header */
.meth-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 30px;
}

.meth-header h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin: 0;
}

/* 3-Column Grid for Formulas */
.formula-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.formula-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.formula-card h4 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0 0 15px 0;
    color: var(--dim);
}

.math-display {
    flex-grow: 1;
    background: var(--header-accent);
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fraction {
    display: inline-block;
    vertical-align: middle;
    text-align: center;
    font-size: 14px;
}

.frac-top { border-bottom: 1px solid var(--text); padding-bottom: 2px; }
.frac-bot { padding-top: 2px; }

.formula-desc {
    font-size: 11px;
    line-height: 1.5;
    color: var(--dim);
    margin: 0;
}

/* Info Blocks */
.info-strip-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.info-block {
    font-size: 13px;
    line-height: 1.6;
}

.info-block strong { color: var(--text); display: block; margin-bottom: 4px; }

/* Deep Dive Callouts */
.callout-box {
    background: rgba(59, 130, 246, 0.04);
    border-left: 4px solid var(--blue-2);
    padding: 20px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.callout-box h3 { font-size: 14px; margin-top: 0; color: var(--text); }
.callout-box p { font-size: 12px; margin-bottom: 10px; line-height: 1.6; color: var(--dim); }

.tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    background: var(--border);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--text);
}


/* ------------------------------------------------------------- */



/* Custom Variables - Ensure these match your site theme */
:root {
    --blue: #0d6efd; /* Bootstrap Primary Blue */
    --border: #dee2e6;
    --card: #ffffff;
    --text: #212529;
    --dim: #6c757d;
    --header-accent: #f8f9fa;
}

.methodology-container {
    margin-top: 1rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    /* Bootstrap Container Logic */
    width: 100%;
    padding-right: var(--bs-gutter-x, .75rem);
    padding-left: var(--bs-gutter-x, .75rem);
    margin-right: auto;
    margin-left: auto;
}

/* Header - Using Bootstrap Flex */
.meth-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.meth-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

/* Grid System - Replaces custom grid with BS-style behavior */
.formula-grid, .info-strip-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* Make blocks act like Bootstrap Columns */
.formula-card, .info-block {
    flex: 1 0 300px; /* Grow, don't shrink, base width 300px */
    min-width: 0;
}

/* Card Styling - Leveraging Bootstrap Card Look */
.formula-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

/* Math Display - Refined with Bootstrap colors */
.math-display {
    background-color: var(--header-accent);
    border-radius: 0.5rem;
    padding: 1rem;
    font-family: 'JetBrains Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.fraction {
    display: inline-block;
    text-align: center;
    font-size: 0.9rem;
}

.frac-top { border-bottom: 1px solid var(--text); padding-bottom: 2px; }

/* Callout Box - Using Bootstrap Alert-style design */
.callout-box {
    background-color: rgba(13, 110, 253, 0.05);
    border-left: 5px solid var(--blue-2);
    padding: 1.5rem;
    border-radius: 0.375rem;
    margin-bottom: 1.5rem;
}

/* Utility for Lists inside Cards */
.formula-card ul {
    list-style: none;
    padding-left: 0.5rem;
}

/* Typography Overrides */
.formula-desc {
    font-size: 0.75rem;
    color: var(--dim);
}

.info-block strong {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}