/* Demo-specific styles. Shell tokens come from exec-shell.css. */

.nnp-grid {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr) 340px;
  gap: 20px;
  align-items: start;
}

@media (max-width: 1200px) {
  .nnp-grid { grid-template-columns: 280px minmax(0, 1fr); }
  .right-panel { grid-column: 1 / -1; }
}

@media (max-width: 860px) {
  .nnp-grid { grid-template-columns: minmax(0, 1fr); }
  .right-panel { grid-column: auto; }
}

.panel,
.visualization-container {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
}

.panel--grow { display: flex; flex-direction: column; gap: 12px; }

.panel h2,
.visualization-container h3 {
  margin: 0 0 14px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.01em;
}

.center-panel,
.right-panel { display: flex; flex-direction: column; gap: 20px; min-width: 0; }

.control-group { margin-bottom: 16px; }

.control-group label,
.control-label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

.control-value { color: var(--accent); font-weight: 600; }
.control-hint { color: var(--muted); font-weight: 400; }

.control-group input[type='range'] { width: 100%; accent-color: var(--accent); }

.control-group select,
.seed-input {
  width: 100%;
  padding: 9px 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  font: inherit;
  font-size: 0.9rem;
}

.dataset-buttons { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }

.dataset-btn,
.btn,
.add-layer-btn {
  padding: 8px 10px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.dataset-btn:hover,
.btn:hover,
.add-layer-btn:hover { background: var(--border); }

.dataset-btn.is-active {
  background: color-mix(in srgb, var(--accent) 22%, var(--panel-2));
  border-color: var(--accent);
  color: var(--text);
}

.btn--primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); font-weight: 600; }
.btn--primary:hover { background: color-mix(in srgb, var(--accent) 85%, #fff); }
.btn--danger { border-color: var(--danger); color: var(--danger); }
.btn--danger:hover { background: color-mix(in srgb, var(--danger) 18%, var(--panel-2)); }

.button-group { display: flex; gap: 8px; margin-bottom: 10px; }
.button-group .btn { flex: 1; }

.add-layer-btn { width: 100%; margin-top: 10px; }

:where(.dataset-btn, .btn, .add-layer-btn, select, input):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.training-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
}

.status-indicator { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); }
.status-indicator.is-idle { background: var(--muted); }
.status-indicator.is-training { background: var(--ok); animation: nnp-pulse 1.2s ease-in-out infinite; }
.status-indicator.is-done { background: var(--accent); }
.status-text { color: var(--muted); }

@keyframes nnp-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

@media (prefers-reduced-motion: reduce) {
  .status-indicator.is-training { animation: none; }
  .dataset-btn, .btn, .add-layer-btn { transition: none; }
}

canvas { max-width: 100%; height: auto; display: block; border-radius: 6px; background: var(--panel-2); }

.chart-fallback { margin: 10px 0 0; color: var(--warn); font-size: 0.85rem; }

.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }

@media (max-width: 560px) { .metrics-grid { grid-template-columns: repeat(2, 1fr); } }

.metric {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
}

.metric-value { font-size: 1.25rem; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.metric-label { margin-top: 2px; font-size: 0.72rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }

.layer-controls { display: flex; flex-direction: column; gap: 8px; }

.layer-item { background: var(--panel-2); border: 1px solid var(--border); border-radius: 6px; padding: 10px; }
.layer-header { font-size: 0.8rem; color: var(--text); font-weight: 600; }
.neurons-display { font-size: 0.78rem; color: var(--muted); margin-top: 2px; }

.hidden-layer-row { display: flex; align-items: center; gap: 8px; }
.hidden-layer-row input[type='number'] { width: 62px; padding: 5px; background: var(--panel); border: 1px solid var(--border); color: var(--text); border-radius: 4px; font: inherit; font-size: 0.8rem; }
.hidden-layer-row select { flex: 1; padding: 5px; font-size: 0.8rem; }
.remove-layer-btn { background: none; border: 1px solid var(--danger); color: var(--danger); border-radius: 4px; padding: 4px 8px; cursor: pointer; font: inherit; font-size: 0.75rem; }

.network-canvas { flex: 1; min-height: 240px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}