/* ============================================================
   git.css — Git Visual Sandbox
   Terminale simulato + grafo dei commit a corsie. Prefisso .gv-
   Usa base.css + lab.css.
   ============================================================ */

.gv-sec { position: relative; z-index: 2; }
.gv-layout { display: grid; grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr); gap: 1.25rem; align-items: stretch; margin-top: 1.25rem; }
@media (max-width: 900px) { .gv-layout { grid-template-columns: 1fr; } }

/* ---------- Terminale ---------- */
.gv-term-panel { display: flex; flex-direction: column; padding: 0; overflow: hidden; }
.gv-term-bar {
  display: flex; align-items: center; gap: 0.6rem;
  padding: 0.7rem 1rem; border-bottom: 1px solid var(--line); background: var(--bg-sunk);
}
.gv-dots { display: inline-flex; gap: 0.4rem; }
.gv-dots i { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.gv-dots i:nth-child(1) { background: #e0533d; }
.gv-dots i:nth-child(2) { background: #d9a72b; }
.gv-dots i:nth-child(3) { background: #3fae6b; }
.gv-term-title { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-soft); }
.gv-term-reset { margin-left: auto; }

.gv-term {
  flex: 1; min-height: 300px; max-height: 460px; overflow-y: auto;
  padding: 0.9rem 1rem; font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.55;
  background: var(--bg-sunk);
}
.gv-line { white-space: pre-wrap; word-break: break-word; }
.gv-line.cmd { color: var(--ink); }
.gv-line.cmd .gv-prompt { color: var(--accent); }
.gv-line.out { color: var(--ink-soft); }
.gv-line.err { color: #e0533d; }
.gv-line.ok { color: #3fae6b; }
.gv-line.note { color: var(--ink-faint); }

.gv-inputline { display: flex; align-items: center; gap: 0.5rem; padding: 0.7rem 1rem; border-top: 1px solid var(--line); background: var(--bg-elev); }
.gv-prompt { color: var(--accent); font-family: var(--font-mono); font-size: 0.85rem; white-space: nowrap; }
.gv-input {
  flex: 1; border: 0; background: transparent; color: var(--ink); outline: none;
  font-family: var(--font-mono); font-size: 0.85rem; min-width: 0;
}

.gv-suggests { margin-top: 1.1rem; }
.gv-suggests-label { display: block; font-size: 0.8rem; color: var(--ink-soft); margin: 0.6rem 0 0.45rem; }
.gv-suggests-label:first-child { margin-top: 0; }
.gv-suggests-label strong { color: var(--ink); }
.gv-seq { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.gv-chip {
  display: inline-flex; align-items: center; gap: 0.45rem;
  font-family: var(--font-mono); font-size: 0.75rem; padding: 0.35rem 0.7rem;
  border: 1px solid var(--line); border-radius: 100px; background: var(--bg); color: var(--ink-soft); cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.gv-chip:hover { border-color: var(--accent); color: var(--accent); }
.gv-step { display: inline-flex; align-items: center; justify-content: center; width: 1.15rem; height: 1.15rem;
  border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-size: 0.66rem; font-weight: 600; flex-shrink: 0; }

/* ---------- Grafo ---------- */
.gv-graph-panel { display: flex; flex-direction: column; }
.gv-graph-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 0.5rem; }
.gv-graph-head h2 { font-family: var(--font-display); font-weight: 500; font-size: clamp(1.2rem, 2.6vw, 1.6rem); letter-spacing: -0.015em; }
.gv-graph-scroll { flex: 1; overflow: auto; background: var(--bg-sunk); border: 1px solid var(--line); border-radius: 12px; min-height: 320px; max-height: 520px; }
.gv-svg { display: block; }
.gv-empty { padding: 2.5rem 1.5rem; text-align: center; color: var(--ink-faint); font-family: var(--font-mono); font-size: 0.85rem; }

.gv-edge { fill: none; stroke-width: 2; }
.gv-node circle { stroke: var(--bg-sunk); stroke-width: 3; transition: r 0.2s var(--ease); }
.gv-node text.gv-id { font-family: var(--font-mono); font-size: 11px; fill: var(--ink); dominant-baseline: central; }
.gv-node text.gv-msg { font-family: var(--font-mono); font-size: 11px; fill: var(--ink-soft); dominant-baseline: central; }
.gv-node.head circle { stroke: var(--ink); stroke-width: 3; }
.gv-headring { fill: none; stroke: var(--ink); stroke-width: 2; stroke-dasharray: 3 3; }

.gv-blabel { font-family: var(--font-mono); font-size: 11px; font-weight: 600; dominant-baseline: central; }
.gv-bpill { rx: 5; }
.gv-headtag text { fill: var(--accent-ink); }

.gv-explain { margin-top: 1.1rem; font-family: var(--font-mono); font-size: 0.82rem; color: var(--ink); line-height: 1.6; min-height: 1.4rem; }
.gv-explain b { color: var(--accent); }
.gv-refs { display: flex; flex-wrap: wrap; gap: 0.5rem 0.9rem; margin-top: 0.9rem; padding-top: 0.9rem; border-top: 1px solid var(--line-soft); font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-soft); }
.gv-refs .gv-ref b { color: var(--ink); font-weight: 600; }
.gv-refs .gv-ref.head b { color: var(--accent); }

@media (prefers-reduced-motion: reduce) { .gv-node circle { transition: none; } }

/* ============================================================
   Guida ai comandi (accordion + ricerca) — come nel lab terminale
   ============================================================ */
.guide-panel { margin-top: 0.5rem; }
.guide-search { max-width: 30rem; margin-bottom: 1.75rem; }

.guide-cat { margin-bottom: 2rem; }
.guide-cat:last-child { margin-bottom: 0; }
.guide-cat-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 0.35rem;
}
.guide-cat-intro { color: var(--ink-soft); font-size: 0.9rem; margin-bottom: 1rem; }

.guide-cmd {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  margin-bottom: 0.6rem;
  overflow: hidden;
  transition: border-color 0.2s var(--ease);
}
.guide-cmd[open] { border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.guide-cmd.concept { background: var(--accent-wash); border-style: dashed; }

.guide-cmd summary {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  flex-wrap: wrap;
  padding: 0.85rem 1.1rem;
  cursor: pointer;
  list-style: none;
}
.guide-cmd summary::-webkit-details-marker { display: none; }
.guide-cmd summary::before {
  content: "+";
  font-family: var(--font-mono);
  color: var(--ink-faint);
  margin-right: -0.3rem;
}
.guide-cmd[open] summary::before { content: "−"; color: var(--accent); }
.g-name {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
}
.guide-cmd.concept .g-name { color: var(--ink); font-style: italic; }
.g-syntax {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
}

.g-body { padding: 0 1.1rem 1.2rem; }
.g-desc { color: var(--ink-soft); font-size: 0.94rem; line-height: 1.65; }
.g-desc code, .g-opts code, .g-ex code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-elev);
  border: 1px solid var(--line-soft);
  border-radius: 5px;
  padding: 0.05rem 0.35rem;
  color: var(--ink);
}
.g-desc b { color: var(--ink); font-weight: 600; }

.g-opts { list-style: none; padding: 0; margin: 1rem 0 0; display: grid; gap: 0.45rem; }
.g-opts li { display: flex; gap: 0.85rem; align-items: baseline; font-size: 0.9rem; }
.g-opts li code { flex-shrink: 0; min-width: 4.5rem; }
.g-opts li span { color: var(--ink-soft); }

.g-examples { margin-top: 1.1rem; }
.g-ex-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.5rem;
}
.g-ex {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0;
}
.g-ex code {
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  white-space: nowrap;
  padding: 0.4rem 0.6rem;
  background: var(--bg-sunk);
}
.g-try {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: var(--bg);
  color: var(--ink-soft);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}
.g-try:hover { border-color: var(--accent); color: var(--accent); }

.guide-empty { color: var(--ink-soft); font-family: var(--font-mono); font-size: 0.9rem; }

@media (max-width: 560px) {
  .g-ex { flex-wrap: wrap; }
  .g-opts li { flex-direction: column; gap: 0.15rem; }
  .g-syntax { flex-basis: 100%; }
  .guide-panel { padding: 1.1rem; }
  .g-ex code { font-size: 0.72rem; }
}