/* ==========================================================================
   DECISION CONTEXT MODELS (DCM) — RESEARCH HUB STYLESHEET
   Authoritative Reference: redesign roadmap.docx (Parts 11, 14, 23, 24)
   ========================================================================== */

@import url('../../css/research-tokens.css');

/* Pathway Flowchart Nodes */
.pathway-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin: var(--space-8) 0;
}

@media (max-width: 860px) {
    .pathway-grid {
        grid-template-columns: 1fr;
    }
}

.pathway-node {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius);
    padding: 1.25rem 1rem;
    display: flex;
    flex-direction: column;
    position: relative;
}

.pathway-node--alert {
    border-color: rgba(153, 27, 27, 0.5);
    background: var(--warning-bg);
}

.pathway-node__step {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.pathway-node--alert .pathway-node__step {
    color: #f87171;
}

.pathway-node__title {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.35rem;
}

.pathway-node__desc {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Two-Layer Pipeline Architecture Box */
.two-layer-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    margin: var(--space-8) 0;
}

@media (max-width: 768px) {
    .two-layer-box {
        grid-template-columns: 1fr;
    }
}

.layer-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--border-radius);
    padding: 1.5rem;
}

.layer-card--upstream {
    border-left: 3px solid var(--accent-gold);
}

.layer-card--downstream {
    border-left: 3px solid #3b82f6;
}

.layer-card__tag {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.35rem;
}

.layer-card--upstream .layer-card__tag {
    color: var(--accent-gold);
}

.layer-card--downstream .layer-card__tag {
    color: #60a5fa;
}

.layer-card__title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.layer-card__desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}