/* PUBLIC ML LAB REFINEMENT v1
   Shared accessibility, evidence-surface and multi-device rules.
   This file supplements, rather than replaces, the foundation stylesheet. */

/* The lab title and subtitle already establish the public learning context. */
.release-boundary {
  display: none !important;
}

.compact-stage-picker {
  display: none;
}

.compact-stage-picker label,
.trace-panel .small-label {
  display: block;
  margin-bottom: 0.45rem;
}

.compact-stage-picker select,
.controls select,
.controls input,
.action-button,
.navigation-buttons button,
#reveal-button {
  min-height: 44px;
}

.presentation,
.experiment-pane,
.interpretation-pane,
.simulator,
.plot-frame,
.gridworld,
.world-controls {
  min-width: 0;
}

.presentation-header h2:focus {
  outline: none;
}

.presentation-header h2:focus-visible,
.code-companion pre:focus-visible,
.compact-stage-picker select:focus-visible,
.controls select:focus-visible,
.controls input:focus-visible,
.action-button:focus-visible,
.navigation-buttons button:focus-visible,
#reveal-button:focus-visible,
.point-button:focus-visible {
  outline: 3px solid color-mix(in srgb, #0875d1 68%, white);
  outline-offset: 3px;
}

.surface-head {
  align-items: flex-start;
  gap: 1rem;
}

.surface-head h4 {
  max-width: 32ch;
}

.controls {
  align-items: end;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.controls label {
  min-width: 0;
}

.controls select,
.controls input[type="range"] {
  width: 100%;
}

.state-badge {
  flex: 0 0 auto;
}

.metric strong {
  overflow-wrap: anywhere;
}

.plot-frame svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 390px;
}

.plot-point {
  transition: cx 180ms ease, cy 180ms ease, fill 180ms ease, opacity 180ms ease;
}

.simulation-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.9rem;
}

.simulation-actions .action-button {
  flex: 0 1 auto;
}

.integrity-note {
  margin-top: 0.85rem;
  padding-left: 0.8rem;
  border-left: 3px solid color-mix(in srgb, #0875d1 60%, transparent);
  color: inherit;
}

.gridworld {
  align-items: start;
  grid-template-columns: minmax(240px, 380px) minmax(220px, 1fr);
}

.world-grid {
  width: min(100%, 380px);
  aspect-ratio: 1;
}

.world-cell {
  min-width: 0;
  overflow: hidden;
}

.world-cell.agent {
  box-shadow: inset 0 0 0 3px currentColor;
}

.policy-actions {
  display: grid;
  grid-template-columns: repeat(3, 48px);
  grid-template-areas:
    ". up ."
    "left down right";
  gap: 0.4rem;
  width: max-content;
}

.policy-actions [data-action="up"] { grid-area: up; }
.policy-actions [data-action="left"] { grid-area: left; }
.policy-actions [data-action="down"] { grid-area: down; }
.policy-actions [data-action="right"] { grid-area: right; }

.policy-actions .action-button {
  width: 48px;
  min-height: 48px;
  padding: 0;
}

.action-button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.trace-panel {
  margin-top: 1rem;
  padding-top: 0.9rem;
  border-top: 1px solid color-mix(in srgb, currentColor 16%, transparent);
}

.trace-list {
  display: grid;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.45;
}

.trace-list li {
  overflow-wrap: anywhere;
}

.trace-list li::before {
  content: "TRACE ";
  color: #0875d1;
  font-weight: 700;
}

.episode-status {
  margin-top: 0.75rem;
  font-weight: 700;
}

@media (max-width: 1080px) {
  .content-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .interpretation-pane {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gridworld {
    grid-template-columns: minmax(230px, 340px) minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .lab-hero,
  .lab-shell,
  .lab-footer {
    overflow-x: clip;
  }

  .point-navigation {
    display: none;
  }

  .compact-stage-picker {
    display: block;
    margin: 0.8rem 0;
  }

  .compact-stage-picker select {
    width: 100%;
  }

  .presentation-header {
    align-items: stretch;
  }

  .navigation-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: 100%;
  }

  .navigation-buttons button {
    width: 100%;
  }

  .controls,
  .metric-grid,
  .interpretation-pane,
  .gridworld {
    grid-template-columns: minmax(0, 1fr);
  }

  .surface-head {
    flex-direction: column;
  }

  .state-badge {
    align-self: flex-start;
  }

  .world-grid {
    justify-self: center;
  }

  .world-controls {
    width: 100%;
  }

  .simulation-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .simulation-actions .action-button,
  .world-controls > .action-button {
    width: 100%;
  }

  .review-bar {
    align-items: stretch;
  }

  #reveal-button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .plot-point,
  .progress-bar,
  .point-button,
  button {
    scroll-behavior: auto;
    transition: none !important;
  }
}