/* The /engines/ page. One machinery, taken apart into its skills and nodes.
 * Reuses the knowledge theme variables so it reads as the same site. */

.engines-wrap { max-width: 720px; margin: 0; padding: 0 0 3rem; }

.engines-empty {
  color: var(--knowledge-text-faint);
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-align: center;
  padding: 2rem 0;
}

/* The list. Mirrors the documents index exactly: tight, left-aligned, dated-row
 * rhythm. The one intentional difference is the title color: an engine title is
 * the accent (yellow), where a document title is plain. */
.engines-list { list-style: none; padding-left: 0; margin: 0 0 8px; }
.engines-list li {
  margin: 0;
  padding: 4px 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: nowrap;
  border-bottom: 1px solid rgba(120, 118, 111, 0.10);
  line-height: 1.25;
}
.engine-link {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
  letter-spacing: 0.02em;
  text-decoration: none;
}
.engine-title {
  color: var(--knowledge-accent, #d8d4c8);
  transition: opacity 140ms ease;
}
.engine-link:hover .engine-title { opacity: 0.7; }
.engine-stat {
  color: var(--knowledge-text-faint);
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 9px; letter-spacing: 0.04em; opacity: 0.55;
  flex: 0 0 auto; margin-left: auto; white-space: nowrap;
  text-transform: uppercase;
}

/* The detail view. */
.engine-detail { max-width: 820px; margin: 0 auto; padding: 1.5rem 4vw 5rem; }
.engine-detail-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem;
}
.engine-share {
  flex: none; margin-top: 0.3rem;
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 0.4rem 0.9rem; cursor: pointer;
  background: transparent; color: var(--knowledge-text-dim);
  border: 1px solid var(--knowledge-border-dim);
  transition: border-color 140ms ease, color 140ms ease;
}
.engine-share:hover { color: var(--knowledge-accent); border-color: var(--knowledge-accent-soft); }
.engine-back {
  display: inline-block; margin-bottom: 1.5rem;
  color: var(--knowledge-text-dim);
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.75rem; letter-spacing: 0.08em; cursor: pointer;
  background: none; border: none; padding: 0; text-decoration: none;
}
.engine-back:hover { color: var(--knowledge-accent); }

.engine-detail h1 {
  color: var(--knowledge-text-strong); font-size: 1.7rem;
  letter-spacing: 0.01em; margin: 0 0 0.3rem;
}
.engine-detail-code {
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.75rem; letter-spacing: 0.12em; color: var(--knowledge-text-faint);
  margin: 0 0 1.5rem;
}
.engine-walk {
  color: var(--knowledge-text); font-size: 0.95rem; line-height: 1.7;
  border-left: 2px solid var(--knowledge-border-dim); padding-left: 1rem; margin: 0 0 2.2rem;
}

/* Each ability is a drawer, so the engine reads as a clean list of what it trains
 * and one ability is unmistakably separate from the next. */
details.engine-skill { border-top: 1px solid var(--knowledge-border); }
details.engine-skill:last-of-type { border-bottom: 1px solid var(--knowledge-border); }

.engine-skill-head {
  display: flex; align-items: baseline; gap: 0.8rem;
  padding: 1.15rem 0.2rem; cursor: pointer; list-style: none;
}
.engine-skill-head::-webkit-details-marker { display: none; }
.engine-skill-head:hover .engine-skill-name { color: var(--knowledge-accent); }
.engine-skill-num {
  flex: none;
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.72rem; letter-spacing: 0.1em; color: var(--knowledge-accent);
}
.engine-skill-name {
  flex: 1 1 auto;
  color: var(--knowledge-text-strong); font-size: 1.15rem; letter-spacing: 0.01em;
  transition: color 140ms ease;
}
.engine-skill-chev {
  flex: none; color: var(--knowledge-text-faint); font-size: 1.1rem;
  line-height: 1; transition: transform 160ms ease, color 140ms ease;
}
details.engine-skill[open] .engine-skill-chev { transform: rotate(45deg); color: var(--knowledge-accent); }
.engine-skill-body { padding: 0 0.2rem 1.8rem; }
.engine-skill-field { margin: 0 0 0.55rem; font-size: 0.9rem; line-height: 1.6; }
.engine-skill-field b {
  color: var(--knowledge-text-faint); font-weight: normal;
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase;
  display: inline-block; min-width: 10.5rem; padding-right: 0.8rem;
}
.engine-skill-field span { color: var(--knowledge-text); }

.engine-node {
  margin: 1.1rem 0 0; padding: 0.9rem 1.1rem;
  background: var(--knowledge-card-bg);
  border: 1px solid var(--knowledge-border-dim);
}
.engine-node-head { display: flex; align-items: baseline; gap: 0.6rem; }
.engine-node-rank {
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.7rem; color: var(--knowledge-accent); letter-spacing: 0.1em;
}
.engine-node-name { color: var(--knowledge-text-strong); font-size: 1rem; margin: 0; }
.engine-node-constraint {
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.6rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--knowledge-accent); border: 1px solid var(--knowledge-accent-soft);
  padding: 0.1rem 0.4rem; margin-left: auto;
}
.engine-node-what { color: var(--knowledge-text-dim); font-size: 0.9rem; margin: 0.4rem 0 0.8rem; }
.engine-node-mech { color: var(--knowledge-text); font-size: 0.9rem; line-height: 1.65; margin: 0 0 0.9rem; }

.engine-levers { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; margin: 0 0 0.8rem; }
@media (max-width: 560px) { .engine-levers { grid-template-columns: 1fr; } }
.engine-lever {
  border: 1px solid var(--knowledge-border-dim); padding: 0.5rem 0.7rem;
  font-size: 0.82rem; line-height: 1.5; color: var(--knowledge-text);
}
.engine-lever b {
  display: block; color: var(--knowledge-text-faint);
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 0.2rem;
}
.engine-node-line { font-size: 0.85rem; line-height: 1.55; margin: 0.35rem 0; color: var(--knowledge-text); }
.engine-node-line b {
  color: var(--knowledge-text-faint); font-weight: normal;
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.64rem; letter-spacing: 0.1em; text-transform: uppercase; margin-right: 0.5rem;
}

/* The verify gate. Admin only. Rendered but hidden unless body.dtg-admin. */
.engine-verify { display: none; }
body.dtg-admin .engine-verify {
  display: block; margin: 2.5rem 0 0; padding: 1.4rem;
  border: 1px solid var(--knowledge-accent-soft); background: var(--knowledge-card-bg);
}
.engine-verify p {
  color: var(--knowledge-text-dim); font-size: 0.85rem; line-height: 1.6; margin: 0 0 1rem;
}
.engine-verify-btn {
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.6rem 1.4rem; cursor: pointer;
  background: transparent; color: var(--knowledge-accent);
  border: 1px solid var(--knowledge-accent);
  transition: background 160ms ease, color 160ms ease;
}
.engine-verify-btn:hover { background: var(--knowledge-accent); color: #050505; }
.engine-verify-btn[data-state="working"] { opacity: 0.5; }
.engine-verify-status {
  margin: 0.8rem 0 0; font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.75rem; color: var(--knowledge-text-dim);
}

/* Hierarchy: skill -> its nodes. A left rail groups the nodes under the skill
 * so the nesting reads at a glance, on the phone especially. */
.engine-nodes {
  margin-top: 0.4rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--knowledge-border-dim);
}
.engine-node:first-child { margin-top: 0.6rem; }

/* Phone view. On a narrow screen the inline label/value split collapses the
 * text into a sliver, so the skill fields stack: label above, value below. */
@media (max-width: 600px) {
  .engines-wrap { padding-left: 5vw; padding-right: 5vw; }
  .engine-detail { padding-left: 5vw; padding-right: 5vw; }

  .engine-detail h1 { font-size: 1.4rem; }

  .engine-skill { padding-top: 1.3rem; }
  .engine-skill-name {
    font-size: 1.05rem;
    color: var(--knowledge-accent);
  }

  .engine-skill-field { margin-bottom: 0.75rem; }
  .engine-skill-field b {
    display: block; min-width: 0; margin-bottom: 0.15rem;
  }

  .engine-nodes { padding-left: 0.7rem; }
  .engine-node { padding: 0.8rem 0.9rem; }
  .engine-node-line b { display: block; margin-bottom: 0.1rem; }
}

/* Per-node training code. Paste it to the bot to train exactly this node. */
.engine-node-train {
  display: inline-block; margin-top: 0.9rem;
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 0.35rem 0.7rem; cursor: pointer;
  background: transparent; color: var(--knowledge-accent);
  border: 1px solid var(--knowledge-accent-soft);
  transition: background 140ms ease, color 140ms ease;
}
.engine-node-train:hover { background: var(--knowledge-accent); color: #050505; }