/* ═══════════════════════════════════════
   SO SIMULADORES — Laboratório Interativo
═══════════════════════════════════════ */

.sim-section-title {
  font-family: var(--fn-head);
  font-size: 11px;
  color: var(--text);
  margin: 28px 0 16px;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sim-section-title span:first-child { color: var(--accent); }
.sim-section-title .sim-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--border), transparent);
}

/* grid de vídeos */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
  margin: 14px 0 22px;
}
.video-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  transition: border-color .3s, box-shadow .3s;
}
.video-card:hover {
  border-color: var(--border-hi);
  box-shadow: var(--glow-accent);
}
.video-card iframe {
  width: 100%;
  height: 160px;
  border: none;
  display: block;
  background: #000;
}
.video-title {
  padding: 8px 10px;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* containers de simulador */
.sim-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 16px;
  margin: 14px 0 22px;
  transition: border-color .3s;
}
.sim-container:hover { border-color: var(--border-hi); }
.sim-header {
  font-family: var(--fn-head);
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sim-header i { font-size: 14px; }

/* controles */
.sim-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0;
}
.sim-btn {
  font-family: var(--fn-head);
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 7px 12px;
  cursor: pointer;
  transition: all .2s;
}
.sim-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  box-shadow: var(--glow-accent);
}
.sim-btn:active { transform: translateY(1px); }
.sim-btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.sim-btn.primary:hover {
  background: var(--accent-light);
  box-shadow: var(--glow-accent);
}
.sim-btn:disabled {
  opacity: .45;
  cursor: not-allowed;
}

/* display de estado/info */
.sim-status {
  font-family: var(--fn-mono);
  font-size: 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px 12px;
  margin: 8px 0;
  color: var(--text-muted);
  min-height: 40px;
}
.sim-status strong { color: var(--accent); }
.sim-status .badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 10px;
  margin-left: 4px;
}
.badge-kernel { background: rgba(192,60,60,.15); color: #c04040; border: 1px solid rgba(192,60,60,.3); }
.badge-user   { background: rgba(24,120,180,.15); color: var(--accent); border: 1px solid rgba(24,120,180,.3); }
.badge-ok     { background: var(--green-dim); color: var(--green); border: 1px solid var(--green-border); }
.badge-warn   { background: rgba(192,122,0,.12); color: var(--yellow); border: 1px solid rgba(192,122,0,.3); }

/* canvas / área de simulação */
.sim-canvas {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px;
  margin: 8px 0;
  min-height: 120px;
  position: relative;
  overflow: auto;
}

/* tabelas de simulação */
.sim-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  margin: 8px 0;
}
.sim-table th, .sim-table td {
  border: 1px solid var(--border);
  padding: 6px 8px;
  text-align: center;
}
.sim-table th {
  background: var(--surface2);
  font-family: var(--fn-head);
  font-size: 10px;
  letter-spacing: 1px;
  color: var(--text-muted);
}
.sim-table td { background: var(--surface); }
.sim-table .active-cell {
  background: var(--accent-dim);
  color: var(--accent);
  font-weight: 700;
}
.sim-table .hit-cell {
  background: var(--green-dim);
  color: var(--green);
  font-weight: 700;
}
.sim-table .miss-cell {
  background: rgba(192,60,60,.1);
  color: #c04040;
  font-weight: 700;
}

/* barras / timeline */
.sim-timeline {
  display: flex;
  gap: 2px;
  margin: 8px 0;
  flex-wrap: wrap;
}
.sim-tick {
  width: 28px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-family: var(--fn-mono);
  border-radius: 3px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text-muted);
}
.sim-tick.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 700;
}
.sim-tick.fault {
  background: rgba(192,60,60,.12);
  border-color: rgba(192,60,60,.4);
  color: #c04040;
}

/* diagramas de estado */
.sim-state-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 10px;
}
.sim-state-node {
  width: 100px;
  height: 44px;
  border-radius: 6px;
  border: 2px solid var(--border);
  background: var(--surface2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-family: var(--fn-head);
  color: var(--text-muted);
  transition: all .3s;
  cursor: default;
}
.sim-state-node.active {
  border-color: var(--accent);
  background: var(--accent-dim);
  color: var(--accent);
  box-shadow: var(--glow-accent);
}
.sim-state-arrow {
  color: var(--text-dim);
  font-size: 14px;
}

/* diagrama de arquitetura */
.sim-arch-layer {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px 12px;
  margin: 4px 0;
  text-align: center;
  font-size: 12px;
  transition: all .3s;
  cursor: pointer;
}
.sim-arch-layer:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.sim-arch-layer.selected {
  border-color: var(--accent);
  background: var(--accent-dim);
  box-shadow: var(--glow-accent);
}
.sim-arch-stack {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 420px;
  margin: 0 auto;
}

/* memória / quadros */
.sim-frame-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(56px, 1fr));
  gap: 6px;
  margin: 8px 0;
}
.sim-frame {
  aspect-ratio: 1;
  border: 1px solid var(--border);
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-family: var(--fn-mono);
  background: var(--surface2);
  color: var(--text-muted);
  transition: all .2s;
}
.sim-frame.occupied {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 700;
}
.sim-frame.recent {
  box-shadow: 0 0 0 2px var(--green);
}

/* RAID blocos */
.sim-disk-row {
  display: flex;
  gap: 6px;
  align-items: center;
  margin: 6px 0;
  flex-wrap: wrap;
}
.sim-disk-label {
  width: 70px;
  font-size: 11px;
  font-family: var(--fn-head);
  color: var(--text-muted);
}
.sim-disk-blocks {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.sim-block {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-family: var(--fn-mono);
  background: var(--surface2);
  color: var(--text-muted);
}
.sim-block.data { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }
.sim-block.parity { background: rgba(192,122,0,.12); border-color: var(--yellow); color: var(--yellow); }
.sim-block.mirror { background: var(--green-dim); border-color: var(--green); color: var(--green); }

/* semáforo / filósofos */
.sim-fork {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  margin: 0 4px;
  transition: all .3s;
}
.sim-fork.free { background: var(--surface2); color: var(--text-muted); }
.sim-fork.taken { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }
.sim-philosopher {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  margin: 0 8px;
}
.sim-phil-face {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: var(--surface2);
  transition: all .3s;
}
.sim-phil-face.thinking { border-color: var(--yellow); background: rgba(192,122,0,.1); }
.sim-phil-face.eating   { border-color: var(--green); background: var(--green-dim); }
.sim-phil-face.hungry   { border-color: var(--accent); background: var(--accent-dim); }
.sim-phil-name { font-size: 10px; font-family: var(--fn-head); color: var(--text-muted); }

/* grafo deadlock */
.sim-graph-svg { width: 100%; height: auto; display: block; }

@media (max-width: 720px) {
  .video-grid { grid-template-columns: 1fr; }
  .sim-state-node { width: 72px; height: 36px; font-size: 9px; }
  .sim-state-arrow { font-size: 12px; }
  .sim-container { padding: 12px; }
  .sim-tick { width: 24px; height: 28px; font-size: 9px; }
  .sim-block { width: 28px; height: 28px; font-size: 8px; }
  .sim-frame-grid { grid-template-columns: repeat(auto-fill, minmax(48px, 1fr)); }
}

@media (max-width: 480px) {
  .sim-state-node { width: 60px; height: 32px; font-size: 8px; }
  .sim-controls { gap: 6px; }
  .sim-btn { padding: 6px 10px; font-size: 9px; }
  .sim-status { font-size: 11px; padding: 8px 10px; }
  .sim-table th, .sim-table td { padding: 4px 6px; font-size: 11px; }
  .sim-tick { width: 20px; height: 24px; font-size: 8px; }
}