/* --- METHODOLOGY & FORMULA SYSTEM --- */

:root {
    --blue: #0d6efd;
    --blue-2: #0b5ed7;
    --border: #dee2e6;
    --card: #ffffff;
    --text: #212529;
    --dim: #6c757d;
    --header-accent: #f8f9fa;
}

.methodology-container {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    width: 100%;
    /* Standard Bootstrap Container Spacing */
    padding-right: var(--bs-gutter-x, .75rem);
    padding-left: var(--bs-gutter-x, .75rem);
    margin-right: auto;
    margin-left: auto;
}

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

.meth-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin: 0;
}

/* Formula & Info Grids */
.formula-grid, 
.info-strip-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* Responsive Column Logic: Grows but snaps to 300px min */
.formula-card, 
.info-block {
    flex: 1 0 300px;
    min-width: 0;
}

/* Methodology Cards */
.formula-card, .meth-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);
    transition: transform 0.2s ease-out;
    display: flex;
    flex-direction: column;
}

.formula-card:hover, .meth-card:hover {
    /* Using translate3d for GPU acceleration */
    transform: translate3d(0, -5px, 0);
}

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

/* Math/Formula Display Box */
.math-display, .formula-box {
    flex-grow: 1;
    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;
    text-align: center;
}

/* Fraction Styling */
.fraction {
    display: inline-block;
    vertical-align: middle;
    text-align: center;
    font-size: 0.9rem;
}

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

.frac-bot { 
    padding-top: 2px; 
}

.formula-desc {
    font-size: 0.75rem;
    line-height: 1.5;
    color: var(--dim);
    margin: 0;
}

/* Callout Boxes (Bootstrap Alert-style) */
.callout-box, .logic-callout {
    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;
}

.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); 
}

/* Info Strips */
.info-block {
    font-size: 13px;
    line-height: 1.6;
}

.info-block strong { 
    color: var(--text); 
    display: block; 
    margin-bottom: 4px; 
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

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