/* AI Second Brain project page: diagrams and visual blocks */

:root {
    --sb-node-bg: rgba(124, 58, 237, 0.07);
    --sb-node-border: rgba(124, 58, 237, 0.3);
    --sb-accent: #7c3aed;
    --sb-raw: #b9770e;
    --sb-raw-bg: rgba(243, 156, 18, 0.12);
    --sb-wiki: #1e8449;
    --sb-wiki-bg: rgba(39, 174, 96, 0.12);
}

[data-theme="dark"] {
    --sb-node-bg: rgba(167, 139, 250, 0.1);
    --sb-node-border: rgba(167, 139, 250, 0.35);
    --sb-accent: #a78bfa;
    --sb-raw: #f5b041;
    --sb-raw-bg: rgba(245, 176, 65, 0.12);
    --sb-wiki: #58d68d;
    --sb-wiki-bg: rgba(88, 214, 141, 0.12);
}

.article-content .lead {
    font-size: 1.2rem;
    color: var(--color-text-main);
}

.article-content h3 {
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
    color: var(--color-text-main);
}

/* Roles: who does what */
.sb-roles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin: 1.5rem 0 2rem;
}

.sb-role {
    padding: 1rem 1.1rem;
    border-radius: var(--radius-md);
    background: var(--sb-node-bg);
    border: 1px solid var(--sb-node-border);
}

.sb-role strong {
    display: block;
    margin-bottom: 0.4rem;
    color: var(--color-text-main);
}

.sb-role ul {
    margin: 0 !important;
    padding-left: 1.1rem !important;
    font-size: 0.92rem;
}

.sb-role li {
    margin-bottom: 0.2rem;
}

/* The three layers */
.sb-layers {
    display: grid;
    grid-template-columns: 1fr auto 1.3fr;
    gap: 0.75rem;
    align-items: stretch;
    margin: 1.5rem 0 0.75rem;
}

.sb-layer {
    padding: 1rem 1.1rem;
    border-radius: var(--radius-md);
    border-top: 4px solid;
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--color-text-muted);
}

.sb-layer.raw { background: var(--sb-raw-bg); border-color: var(--sb-raw); }
.sb-layer.wiki { background: var(--sb-wiki-bg); border-color: var(--sb-wiki); }
.sb-layer.schema { background: var(--sb-node-bg); border-color: var(--sb-accent); }

.sb-layer-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.sb-layer.raw .sb-layer-label { color: var(--sb-raw); }
.sb-layer.wiki .sb-layer-label { color: var(--sb-wiki); }
.sb-layer.schema .sb-layer-label { color: var(--sb-accent); }

.sb-layer strong {
    display: block;
    margin: 0.2rem 0 0.4rem;
    color: var(--color-text-main);
}

.sb-layer-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--sb-accent);
    font-size: 1.4rem;
}

.sb-layer-arrow small {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.sb-folders {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    margin-top: 0.5rem;
}

.sb-folders code {
    font-size: 0.78rem;
    padding: 0.1rem 0.45rem;
    border-radius: var(--radius-sm);
    background: var(--glass-bg);
    color: var(--color-text-main);
}

/* Knowledge graph */
.article-content img.sb-graph {
    display: block;
    width: 100%;
    max-width: 640px;
    height: auto;
    margin: 1.5rem auto 0.5rem;
    box-shadow: none;
    border-radius: 0;
}

.article-content .sb-caption {
    text-align: center;
    font-size: 0.9rem;
}

/* Workflows */
.sb-flows {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin: 1.5rem 0 2rem;
}

.sb-flow {
    padding: 1rem 1.1rem;
    border-radius: var(--radius-md);
    background: var(--sb-node-bg);
    border: 1px solid var(--sb-node-border);
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--color-text-muted);
}

.sb-flow strong {
    display: block;
    font-size: 1.05rem;
    color: var(--sb-accent);
}

.sb-flow em {
    display: block;
    margin-bottom: 0.5rem;
    font-style: normal;
    font-size: 0.82rem;
    color: var(--color-meta);
}

.sb-flow ol {
    margin: 0 !important;
    padding-left: 1.1rem !important;
}

.sb-flow li {
    margin-bottom: 0.2rem;
}

/* Principles */
.sb-principles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin: 1.5rem 0 2rem;
}

.sb-principle {
    padding: 1rem;
    border-radius: var(--radius-md);
    background: var(--sb-node-bg);
    border-left: 4px solid var(--sb-accent);
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--color-text-muted);
}

.sb-principle strong {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--color-text-main);
}

/* Tech stack */
.sb-stack {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin: 1.5rem 0 2rem;
}

.sb-tool {
    padding: 0.9rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--sb-node-border);
    font-size: 0.92rem;
    line-height: 1.45;
    color: var(--color-text-muted);
}

.sb-tool strong {
    display: block;
    color: var(--color-text-main);
}

@media (max-width: 720px) {
    .sb-roles,
    .sb-layers,
    .sb-flows,
    .sb-principles,
    .sb-stack { grid-template-columns: 1fr; }
    .sb-layer-arrow { flex-direction: row; gap: 0.5rem; }
    .sb-layer-arrow span { transform: rotate(90deg); }
}

@media (max-width: 580px) {
    .article-content { padding: 1.5rem 1.1rem; }
}