.engines {
    background: var(--ink-800);
    color: var(--text-on-dark);
    padding: 7rem 0;
}
.engines h2 { color: var(--text-on-dark); }
.engines h2 em { color: var(--violet-400); }

.engines-rows { display: flex; flex-direction: column; gap: 4rem; }

.engine-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 3rem;
}
.engine-row.reverse .engine-info { order: 2; }
.engine-row.reverse .engine-visual { order: 1; }

.engine-info .tag {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    color: var(--text-on-dark-faint);
}
.engine-info .name {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 480;
    line-height: 1.1;
    margin: 0.6rem 0 0.5rem;
    color: var(--text-on-dark);
}
.engine-info .role {
    font-size: 1.0625rem;
    color: var(--text-on-dark-soft);
    max-width: 38ch;
    margin-bottom: 1.4rem;
}
.engine-info .caps { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.engine-info .caps span {
    font-family: var(--font-mono);
    font-size: 0.74rem;
    color: var(--text-on-dark-soft);
    padding: 0.4rem 0.75rem;
    background: var(--ink-800);
    border-radius: var(--pill);
}

.engine-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ink-700);
    border-radius: 14px;
    padding: 2.5rem;
    min-height: 280px;
}

.ev { width: 100%; max-width: 400px; }
.ev-kicker {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-on-dark-faint);
}
.ev-row-main { flex: 1; font-size: 0.92rem; color: var(--text-on-dark); }
.ev-row-side {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-on-dark-faint);
}
.ev-amt {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    font-size: 0.82rem;
    color: var(--text-on-dark-soft);
}

.ev-rows { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.55rem; }
.ev-row {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.65rem 0.9rem;
    background: #251f42;
    border-radius: 10px;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}
.engine-visual.in .ev-row { opacity: 1; transform: none; }
.engine-visual.in .ev-row:nth-child(1) { transition-delay: 200ms; }
.engine-visual.in .ev-row:nth-child(2) { transition-delay: 340ms; }
.engine-visual.in .ev-row:nth-child(3) { transition-delay: 480ms; }

/* Shepher: organización y personas */
.ev-org-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 0.8rem;
    margin-bottom: 0.9rem;
}
.ev-org-name { font-weight: 600; color: var(--text-on-dark); }
.ev-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--ink-800);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-on-dark-soft);
}

/* Shaar: árbol de cuentas */
.ev-tree-root {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.7rem 0.9rem;
    background: #251f42;
    border-radius: 10px;
}
.ev-tree-root .ev-row-main { font-weight: 600; }
.ev-tree-root .ev-amt { color: var(--text-on-dark); }
.ev-branches {
    list-style: none;
    margin: 0.55rem 0 0;
    padding: 0 0 0 1.1rem;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}
.ev-branch {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.6rem 0.9rem;
    background: #1f1a38;
    border-radius: 10px;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}
.ev-branch::before {
    content: '';
    position: absolute;
    left: -1.1rem;
    top: -0.85rem;
    bottom: 50%;
    width: 0.7rem;
    border-left: 1px solid var(--ink-line);
    border-bottom: 1px solid var(--ink-line);
    border-bottom-left-radius: 8px;
}
.engine-visual.in .ev-branch { opacity: 1; transform: none; }
.engine-visual.in .ev-branch:nth-child(1) { transition-delay: 220ms; }
.engine-visual.in .ev-branch:nth-child(2) { transition-delay: 380ms; }
.engine-visual.in .ev-branch:nth-child(3) { transition-delay: 540ms; }

/* Kesher: orden ejecutada */
.ev-exec-head {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.7rem 0.9rem;
    background: #251f42;
    border-radius: 10px;
}
.ev-exec-head .ev-row-main { font-weight: 600; }
.ev-exec-head .ev-amt { color: var(--text-on-dark); }
.ev-exec-rule { display: block; margin: 0.8rem 0 0.6rem; }
.ev-exec .ev-row { background: #1f1a38; }
.ev-status {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--spark);
}
.ev-status::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--spark);
}

@media (prefers-reduced-motion: reduce) {
    .ev-row, .ev-branch { opacity: 1; transform: none; transition: none; }
}

@media (max-width: 860px) {
    .engine-row,
    .engine-row.reverse { grid-template-columns: 1fr; gap: 1.6rem; }
    .engine-row.reverse .engine-info { order: 1; }
    .engine-row.reverse .engine-visual { order: 2; }
}

@media (max-width: 768px) {
    .engines { padding: 4.5rem 0; }
    .engines-rows { gap: 3rem; }
    .engine-visual { padding: 1.5rem; min-height: 220px; }
}