* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 14px;
}

header {
  padding: 10px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

h1 { margin: 0; font-size: 20px; }
.subtitle { font-weight: normal; font-size: 13px; color: var(--muted); }

/* Game/level pickers in the top bar: compact inline groups. */
#header-controls {
  display: flex;
  align-items: center;
  flex-basis: 100%;
  gap: 12px;
  padding: 12px 0 0;
  flex-wrap: wrap;
}
#header-controls section[hidden] { display: none; }
#header-controls section {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--panel-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 5px 10px;
}
#header-controls h2 {
  margin: 0;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  white-space: nowrap;
}
#header-controls label {
  display: flex;
  align-items: center;
  gap: 5px;
  margin: 0;
  white-space: nowrap;
}
#header-controls select,
#header-controls #atari-game {
  width: auto;
  margin-top: 0;
}
#header-controls .toggle-group button {
  flex: 0 0 auto;
  padding: 5px 12px;
}
#header-controls .level-row label { flex: 0 0 auto; }
#header-controls .hint { max-width: 260px; margin: 0; }

.status { color: var(--muted); font-size: 12px; margin-left: auto; }
.status.error { color: var(--rose); }
.status.ok { color: var(--cyan); }

main {
  display: flex;
  gap: 16px;
  padding: 16px 20px;
  align-items: flex-start;
  background: var(--bg);
}

#sidebar {
  width: 260px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  transition: width 0.15s ease;
}
#sidebar.collapsed {
  width: 28px;
  overflow: hidden;
}
#sidebar.collapsed section { display: none; }

.panel-toggle {
  width: 24px;
  height: 24px;
  padding: 0;
  background: var(--panel-raised);
  color: var(--muted);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
}
.panel-toggle:hover { color: var(--ink); border-color: var(--accent); }
#sidebar-toggle { align-self: flex-end; }
#sidebar.collapsed #sidebar-toggle { align-self: center; }

#sidebar section {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
}

#sidebar h2 {
  margin: 0 0 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

label { display: block; margin-bottom: 8px; color: var(--muted); }
label[hidden], .plot-wrap[hidden], .stat-grid div[hidden], p.hint[hidden],
#param-visit-reward-row[hidden] { display: none; }
#param-visit-reward-row h2 { margin-top: 8px; }
#max-walkers-hint { display: block; margin-top: 2px; }
label input[type="number"] {
  width: 100%;
  margin-top: 3px;
  background: var(--field);
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 4px 6px;
}
label input[type="range"] { width: 100%; margin-top: 3px; }
label select,
#atari-game {
  width: 100%;
  margin-top: 3px;
  background: var(--field);
  color: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 4px 6px;
}
.level-row { display: flex; gap: 8px; }
.level-row label { flex: 1; }
label.checkbox { display: flex; align-items: center; gap: 6px; }
label.checkbox input { margin: 0; }

.hint { font-size: 11.5px; color: #8f809a; margin: 6px 0 0; }

.toggle-group { display: flex; gap: 4px; align-items: center; }
.toggle-group button {
  flex: 1;
  padding: 6px 0;
  background: var(--field);
  color: var(--muted);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: 12.5px;
  cursor: pointer;
}
#algo-select { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
#param-consensus-row input { margin-left: 6px; }

.toggle-group button.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.toggle-group button:hover:not(.active) { color: var(--ink); }

.buttons { display: flex; gap: 8px; }
.buttons button {
  flex: 1;
  padding: 8px 0;
  background: var(--accent);
  color: var(--bg);
  border: 0;
  border-radius: var(--radius);
  font-size: 14px;
  cursor: pointer;
}
.buttons button:disabled { background: var(--line); color: #8f809a; cursor: default; }
.buttons button:hover:not(:disabled) { background: var(--accent-hover); }

.stat-grid {
  display: grid;
  grid-template-columns: auto auto;
  gap: 4px 12px;
  font-variant-numeric: tabular-nums;
}
.stat-grid div:nth-child(odd) { color: var(--muted); }

#content {
  flex: 1;
  /* Contain the level-wide map canvas: without this the flex item grows to
     its content and the map viewport never overflows/scrolls. */
  min-width: 0;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: flex-start;
}

#screen-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
}
#screen-panel h2 {
  margin: 0 0 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

#screen-wrap { position: relative; display: inline-block; }

/* Run controls + stats: fills the gap between the best walker and the
   plots panel, above the full-width level map. */
#run-panel {
  flex: 1;
  min-width: 200px;
  align-self: stretch;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
}
#run-panel h2 {
  margin: 14px 0 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

#run-ended {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgb(12 9 17 / 0.86);
  border-radius: 4px;
  text-align: center;
}
#run-ended[hidden] { display: none; }
.run-ended-title {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--rose);
}
.run-ended-detail { color: var(--muted); font-size: 13px; padding: 0 20px; }

#screen {
  width: 512px;
  height: auto;
  image-rendering: pixelated;
  background: #000;
  border-radius: 4px;
  max-width: 100%;
}

#plots-panel {
  flex-shrink: 0;
  display: flex;
  width: 480px;
  position: sticky;
  top: 0;
  align-self: flex-start;
  max-height: 100vh;
}
#plots-panel.collapsed { width: 34px; }
#plots-panel.collapsed #plots { display: none; }
#plots-panel.collapsed #plots-header h2 { display: none; }
#plots-panel.collapsed #plots-resizer { display: none; }

#plots-resizer {
  width: 6px;
  cursor: col-resize;
  flex-shrink: 0;
  border-radius: 3px;
  background: transparent;
}
#plots-resizer:hover,
#plots-resizer.dragging { background: var(--line-strong); }

#plots-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow-y: auto;
  padding-bottom: 8px;
}

#plots-header {
  display: flex;
  align-items: center;
  gap: 8px;
}
#plots-header h2 {
  margin: 0;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

#plots {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.plot {
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

#map-panel {
  flex-basis: 100%;
  /* Keep the flex item from growing to the (level-wide) canvas inside the
     scroll viewport — without this the wrapper never overflows. */
  min-width: 0;
  max-width: 100%;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
}
#map-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
#map-panel h2 {
  margin: 0;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  flex: 1;
}
#map-visits { width: auto; padding: 0 8px; order: -1; }
#map-visits[hidden] { display: none; }
#map-visits.active { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.map-legend {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--muted);
  margin: 6px 0 0;
}
.map-legend[hidden] { display: none; }
.fire-bar {
  display: inline-block;
  width: 90px;
  height: 8px;
  border-radius: 2px;
  background: linear-gradient(90deg, #000, #6e0000, #c82800, #f07800, #ffc828, #fff);
}
#map-zoom { display: flex; gap: 4px; }
#map-zoom button { width: auto; min-width: 24px; padding: 0 6px; }
#map-zoom[hidden] { display: none; }
/* Vertically resizable map viewport: drag the corner handle to zoom the
   map (aspect-true); it scrolls when the level overflows. Flex + auto
   margins center a smaller-than-viewport canvas (letterbox) while still
   scrolling correctly when zoomed past the viewport. */
#map-resize {
  resize: vertical;
  overflow: auto;
  min-height: 40px;
  background: #000;
  border-radius: 4px;
  display: flex;
}
#level-map {
  display: block;
  margin: auto;
  flex-shrink: 0;
}
.map-credit { font-size: 11px; color: #8f809a; margin: 8px 0 0; }
.map-credit a { color: var(--muted); }

footer {
  padding: 10px 20px 20px;
  color: #8f809a;
  font-size: 12px;
}

/* Help icons + shared tooltip (help.js): every [data-help] caption gets a
   small "?" that shows its explanation on hover/focus, pinned on click. */
.help-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 15px;
  height: 15px;
  margin-left: 6px;
  padding: 0;
  vertical-align: middle;
  background: var(--field);
  color: var(--muted);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-size: 10px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0;
  text-transform: none;
  cursor: help;
  flex-shrink: 0;
}
.help-icon:hover,
.help-icon:focus-visible { color: var(--ink); border-color: var(--accent); outline: none; }
label .help-icon { margin-left: 4px; }
.stat-grid .help-icon { margin-left: 4px; }
h2 .help-icon { position: relative; top: -1px; }

#tooltip {
  position: fixed;
  z-index: 1000;
  max-width: 320px;
  padding: 8px 11px;
  background: var(--panel);
  border: 1px solid var(--accent);
  border-radius: 6px;
  color: var(--ink);
  font-size: 12.5px;
  line-height: 1.45;
  text-transform: none;
  letter-spacing: normal;
  font-weight: normal;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.55);
  pointer-events: none;
}
#tooltip.pinned { pointer-events: auto; }
#tooltip[hidden] { display: none; }
#tooltip p { margin: 0; }
#tooltip p + p { margin-top: 6px; }

.plot-wrap { position: relative; }
.plot-wrap .plot { display: block; }
.plot-wrap .help-icon {
  position: absolute;
  top: 5px;
  left: 8px;
  margin: 0;
}

/* Reward terms panel (reward_terms.js): per-console slider groups. */
.reward-terms[hidden] { display: none; }
#reward-terms-section[hidden] { display: none; }
.reward-terms .term-value { color: #d8dbe2; }
.term-defaults {
  margin-top: 4px;
  padding: 4px 10px;
  background: var(--field);
  color: var(--muted);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: 12px;
  cursor: pointer;
}
.term-defaults:hover { color: var(--ink); border-color: var(--accent); }

/* Shared laboratory shell: the arcade keeps its dense data layout, but uses
   the same visual rhythm and responsive breakpoints as the two labs. */
body {
  overflow-x: hidden;
}

.arcade-header {
  flex-wrap: wrap;
}

.arcade-header .app-page-title {
  flex-shrink: 0;
}

.arcade-header .app-nav {
  order: 0;
}

.arcade-header #header-controls {
  order: 3;
}

.arcade-header #status {
  order: 2;
}

#header-controls section {
  min-height: 38px;
}

#header-controls .toggle-group button {
  min-height: 28px;
}

@media (max-width: 1200px) {
  main {
    padding: 14px 16px;
  }

  #plots-panel {
    width: min(360px, 32vw);
  }
}

@media (max-width: 900px) {
  #plots-panel {
    width: 100%;
    position: static;
    max-height: none;
  }

  #plots-body {
    max-height: none;
  }
}

@media (max-width: 780px) {
  .arcade-header .app-page-title {
    font-size: 16px;
  }

  .arcade-header .app-nav {
    order: 4;
  }

  .arcade-header #status {
    margin-left: auto;
    font-size: 11px;
  }

  #header-controls {
    gap: 8px;
  }

  #header-controls section {
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
  }

  #header-controls .toggle-group {
    min-width: max-content;
  }

  main {
    display: block;
    padding: 12px;
  }

  #sidebar {
    width: 100%;
    margin-bottom: 12px;
  }

  #sidebar.collapsed {
    width: 100%;
    height: 28px;
  }

  #content {
    display: flex;
    gap: 12px;
  }

  #screen-panel,
  #run-panel,
  #map-panel {
    width: 100%;
  }

  #screen {
    width: 100%;
    max-width: 512px;
  }

  #plots-panel,
  #plots-panel.collapsed {
    width: 100%;
  }

  .stat-grid {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}