/* AI & LLM Systems: three card grammars for retrieval, orchestration, and agents. */
.ai-system-card {
    --ai-card-accent: var(--sky-dark);
    --ai-card-soft: var(--sky);
    --ai-card-wash: rgba(214, 234, 248, 0.48);
    padding: 24px;
    border-color: color-mix(in srgb, var(--ai-card-accent) 16%, var(--card-border));
    background: var(--card-bg);
    border-top: 2px solid var(--ai-card-accent);
}

.ai-system-card[data-ai-variant='orchestration'] {
    --ai-card-accent: var(--lavender-dark);
    --ai-card-soft: var(--lavender);
    --ai-card-wash: rgba(232, 224, 240, 0.62);
}

.ai-system-card[data-ai-variant='agent'] {
    --ai-card-accent: var(--mint-dark);
    --ai-card-soft: var(--mint);
    --ai-card-wash: rgba(212, 245, 224, 0.62);
}

.ai-system-card .ai-card-rail {
    display: flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
    font-size: 10.5px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.ai-card-index {
    display: inline-grid;
    width: 19px;
    height: 19px;
    place-items: center;
    border: 1px solid color-mix(in srgb, var(--ai-card-accent) 34%, transparent);
    border-radius: 6px;
    background: var(--surface-sunken);
    font-size: 10.5px;
}

.ai-card-state {
    margin-left: auto;
    padding: 4px 7px;
    border: 1px solid color-mix(in srgb, var(--ai-card-accent) 26%, transparent);
    border-radius: 999px;
    background: var(--surface-sunken);
    font-size: 10px;
    letter-spacing: 0.08em;
}

.ai-system-card .project-header {
    margin-bottom: 12px;
}

.ai-card-pipeline,
.ai-card-sequence {
    display: flex;
    align-items: center;
    gap: 5px;
    margin: 2px 0 13px;
    padding: 7px 8px;
    overflow: hidden;
    border: 1px solid color-mix(in srgb, var(--ai-card-accent) 17%, transparent);
    border-radius: 10px;
    background: var(--surface-sunken);
}

.ai-card-pipeline span,
.ai-card-sequence span {
    min-width: 0;
    flex: 1 1 0;
    color: var(--text-secondary);
    font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-align: center;
    text-transform: uppercase;
    white-space: nowrap;
}

.ai-card-pipeline i,
.ai-card-sequence i {
    color: var(--text-muted);
    font-size: 12px;
    font-style: normal;
}

.ai-card-metric {
    display: flex;
    align-items: baseline;
    gap: 7px;
    margin-block: 20px 16px;
    padding-block: 16px;
    border-block: 1px solid var(--hairline);
    flex-wrap: wrap;
}

.ai-card-metric strong {
    color: var(--text);
    font-size: 32px;
    font-variant-numeric: tabular-nums;
    line-height: 1.1;
    letter-spacing: -0.04em;
}

.ai-card-metric span {
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 650;
}

.ai-card-copy {
    margin-bottom: 12px;
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.7;
}

.ai-card-branch {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 9px;
    align-items: center;
    margin: 2px 0 13px;
    padding: 8px 9px;
    border: 1px solid color-mix(in srgb, var(--ai-card-accent) 18%, transparent);
    border-radius: 10px;
    background: var(--surface-sunken);
}

.ai-branch-entry {
    padding: 6px 7px;
    border-radius: 7px;
    background: rgba(255, 255, 255, 0.78);
    color: var(--text-secondary);
    font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
}

.ai-branch-rail {
    display: grid;
    gap: 4px;
}

.ai-branch-rail span {
    position: relative;
    padding-left: 10px;
    color: var(--text-secondary);
    font-size: 10.5px;
    font-weight: 700;
}

.ai-branch-rail span::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 5px;
    height: 5px;
    border: 1px solid var(--ai-card-accent);
    border-radius: 50%;
    transform: translateY(-50%);
}

.ai-card-contract {
    display: flex;
    align-items: center;
    gap: 7px;
    margin: 2px 0 13px;
    color: var(--text-secondary);
    font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
    font-size: 10.5px;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.ai-card-contract::before,
.ai-card-contract::after {
    content: '';
    height: 1px;
    flex: 1;
    background: color-mix(in srgb, var(--ai-card-accent) 28%, transparent);
}

.ai-system-card .project-tags {
    gap: 6px;
}

.ai-system-card .project-tag {
    border-color: color-mix(in srgb, var(--ai-card-accent) 28%, transparent);
}

body[data-theme='dark'] .ai-system-card {
    background: var(--card-bg);
}

body[data-theme='dark'] .ai-card-state,
body[data-theme='dark'] .ai-branch-entry {
    background: rgba(20, 12, 11, 0.32);
}

@media (max-width: 767px) {
    .ai-system-card {
        padding: 20px;
    }

    .ai-card-pipeline,
    .ai-card-sequence {
        gap: 3px;
        padding-inline: 6px;
    }

    .ai-card-pipeline span,
    .ai-card-sequence span {
        font-size: 9.5px;
    }
}