* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
:root {
  --bg: #1a1a2e;
  --bg-card: #16213e;
  --bg-deep: #0f0f23;
  --fg: #eee;
  --muted: #8a8aa3;
  --accent: #e94560;
  --ok: #4fcc30;
  --warn: #ffaa33;
  --bad: #f93c31;
  --info: #88d8f1;
  --border: #333;
}
body {
  background: var(--bg);
  color: var(--fg);
  font:
    14px/1.4 "Inter",
    system-ui,
    sans-serif;
  min-height: 100vh;
}
.mono {
  font-family:
    "JetBrains Mono",
    "Menlo",
    "Courier New",
    monospace;
}
.muted {
  color: var(--muted);
}
.small {
  font-size: 12px;
}
#topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-deep);
}
#hdr-title {
  font-weight: 600;
  color: var(--accent);
  margin-right: 12px;
}
#hdr-title .hdr-k {
  color: var(--muted);
  font-weight: 500;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin: 0 4px 0 14px;
}
#hdr-title .hdr-k:first-child {
  margin-left: 0;
}
#hdr-title .hdr-v {
  color: var(--fg);
  font-weight: 600;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 2px 8px;
}
.hdr-lbl {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-right: -4px;
}
.btn-back {
  display: inline-block;
  margin-right: 14px;
  padding: 4px 12px;
  background: var(--bg-card);
  color: var(--info);
  border: 1px solid var(--info);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}
.btn-back:hover {
  background: var(--info);
  color: #10131f;
}
.hdr-right {
  display: flex;
  gap: 12px;
  align-items: center;
}
.hdr-right select,
.hdr-right a {
  background: var(--bg-card);
  color: var(--fg);
  border: 1px solid var(--border);
  padding: 6px 10px;
  border-radius: 4px;
  text-decoration: none;
  font: inherit;
}
.hdr-right a:hover {
  border-color: var(--accent);
}
#transport {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border);
}
#transport button {
  background: var(--bg-card);
  color: var(--fg);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  font: inherit;
  min-width: 36px;
}
#transport button:hover {
  border-color: var(--accent);
}
#transport button#btn-prev {
  transform: scaleX(-1);
}
#step-counter {
  min-width: 90px;
  text-align: center;
}
#scrubber {
  flex: 1;
}
.speed-lbl {
  color: var(--muted);
}
.speed-lbl select {
  background: var(--bg-card);
  color: var(--fg);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
}
#stagebar {
  display: flex;
  height: 6px;
  width: 100%;
}
#stagebar .seg {
  height: 100%;
}
#stagebar .seg[title]:hover {
  filter: brightness(1.4);
}
#level-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--border);
}
#level-nav .lbl {
  color: var(--accent);
}
#level-nav .filter-lbl {
  margin-left: auto;
}
#level-nav select {
  background: var(--bg-card);
  color: var(--fg);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 4px;
}
#level-buttons {
  display: inline-flex;
  gap: 4px;
  flex-wrap: wrap;
}
#level-buttons .lvl-btn {
  background: var(--bg-card);
  color: var(--fg);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  font: inherit;
  font-size: 12px;
}
#level-buttons .lvl-btn:hover {
  border-color: var(--accent);
}
#level-buttons .lvl-btn.cur {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
#level-buttons .lvl-btn.completed {
  border-left: 3px solid var(--ok);
}
#level-buttons .lvl-btn.retry {
  border-left: 3px solid var(--bad);
}
#level-buttons .lvl-btn.failed {
  border-left: 3px solid var(--muted);
}
#grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 540px 1fr 1fr;
  align-items: stretch;
  height: calc(100vh - 220px);
  min-height: 740px;
  padding: 12px 16px;
}
.pane {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  min-height: 0;
}
#pane-now {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
#pane-now > #step-detail {
  flex: 0 0 auto;
}
#pane-now > h3 {
  flex: 0 0 auto;
}
#pane-now > .action-history {
  flex: 1 1 auto;
  max-height: none;
  min-height: 0;
}
#col-right {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
}
#pane-plan {
  flex: 0 0 auto;
}
#pane-memory {
  flex: 1 1 auto;
  overflow-y: auto;
  min-height: 0;
}
#pane-growth {
  flex: 0 0 auto;
}
#pane-memory,
.action-history {
  scrollbar-width: thin;
  scrollbar-color: var(--border) var(--bg-card);
}
#pane-memory::-webkit-scrollbar,
.action-history::-webkit-scrollbar {
  width: 10px;
}
#pane-memory::-webkit-scrollbar-track,
.action-history::-webkit-scrollbar-track {
  background: var(--bg-card);
  border-radius: 5px;
}
#pane-memory::-webkit-scrollbar-thumb,
.action-history::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 5px;
}
#pane-memory::-webkit-scrollbar-thumb:hover,
.action-history::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}
.pane h2 {
  color: var(--accent);
  font-size: 14px;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.pane h3,
.pane h4 {
  color: var(--info);
  font-size: 12px;
  margin: 8px 0 4px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.card {
  background: var(--bg-card);
  border: 1px solid #1f2c4f;
  border-radius: 4px;
  padding: 8px 10px;
  margin-bottom: 8px;
}
#game-canvas {
  display: block;
  width: 512px;
  height: 512px;
  border: 2px solid var(--accent);
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: #000;
}
#crt-frame {
  position: relative;
  width: 516px;
}
#overlay-canvas {
  position: absolute;
  left: 0;
  top: 0;
  display: block;
  width: 512px;
  height: 512px;
  border: 2px solid transparent;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  pointer-events: none;
}
#crt-frame.crt-on #overlay-canvas {
  filter: saturate(1.15) contrast(1.06) brightness(1.03);
  border-radius: 10px;
}
#submit-note {
  margin-top: 4px;
  text-align: center;
  color: var(--info);
  border: 1px dashed var(--info);
  border-radius: 4px;
  padding: 3px 8px;
  visibility: hidden;
}
#submit-note.on {
  visibility: visible;
}
#crt-frame.crt-on #game-canvas {
  filter: saturate(1.15) contrast(1.06) brightness(1.03) drop-shadow(0 0 6px rgba(120, 200, 255, .18));
  border-radius: 10px;
}
#crt-frame #crt-fx {
  display: none;
}
#crt-frame.crt-on #crt-fx {
  display: block;
  position: absolute;
  inset: 2px;
  pointer-events: none;
  border-radius: 9px;
  background:
    repeating-linear-gradient(
      to bottom,
      rgba(0, 0, 0, .28) 0 1px,
      transparent 1px 3px),
    repeating-linear-gradient(
      to right,
      rgba(255, 60, 60, .05) 0 1px,
      rgba(60, 255, 60, .04) 1px 2px,
      rgba(60, 120, 255, .05) 2px 3px),
    radial-gradient(
      ellipse at center,
      transparent 58%,
      rgba(0, 0, 0, .28) 100%);
}
#crt-frame.crt-on #crt-fx::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 9px;
  background:
    linear-gradient(
      to bottom,
      transparent 0%,
      rgba(255, 255, 255, .045) 48%,
      rgba(255, 255, 255, .075) 50%,
      rgba(255, 255, 255, .045) 52%,
      transparent 100%);
  background-size: 100% 220%;
  animation: crt-roll 7s linear infinite;
}
@keyframes crt-roll {
  from {
    background-position: 0 -110%;
  }
  to {
    background-position: 0 110%;
  }
}
@media (prefers-reduced-motion: reduce) {
  #crt-frame.crt-on #crt-fx::after {
    animation: none;
  }
}
.crt-toggle {
  font-size: 11px;
  color: var(--muted);
  font-weight: 400;
  margin-left: 10px;
  cursor: pointer;
  user-select: none;
}
.crt-toggle input {
  vertical-align: middle;
  accent-color: var(--accent);
}
#canvas-overlay {
  margin-top: 6px;
  min-height: 1.4em;
  text-align: center;
}
#step-detail {
  line-height: 1.3;
  padding: 4px 6px;
}
.kvp {
  display: grid;
  grid-template-columns: 138px 1fr;
  gap: 0;
  font-size: 12px;
}
.kvp dt,
.kvp dd {
  padding: 3px 6px;
  border-bottom: 1px solid #1f2c4f;
}
.kvp dt:last-of-type,
.kvp dd:last-of-type {
  border-bottom: none;
}
.kvp dt {
  color: var(--muted);
}
.kvp dd {
  color: var(--fg);
}
.action-history {
  list-style: none;
  max-height: 480px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-card);
  padding: 0;
}
.action-history li {
  display: flex;
  gap: 8px;
  padding: 3px 8px;
  font-family: "Menlo", monospace;
  font-size: 12px;
  border-bottom: 1px solid #20284a;
}
.action-history li:last-child {
  border-bottom: none;
}
.action-history li.cur {
  background: var(--accent);
  color: #fff;
}
.action-history li .step {
  color: var(--muted);
  min-width: 36px;
  text-align: right;
}
.action-history li.cur .step {
  color: #fff;
}
.action-history .src-reflection_plan {
  color: #ffd24a;
}
.action-history .actor-llm_plan {
  color: #ffd24a;
}
.action-history .actor-random_fallback {
  color: #ff8855;
}
.actor-chip {
  font: 600 11px Menlo, monospace;
  border: 1px solid currentColor;
  border-radius: 8px;
  padding: 0 6px;
}
.actor-chip.actor-llm_plan {
  color: #ffd24a;
}
.actor-chip.actor-random_fallback {
  color: #ff8855;
}
.action-history li.reset-marker {
  background: #2a1414;
  color: var(--bad);
  justify-content: center;
}
.action-history li.reset-marker.cur {
  background: var(--bad);
  color: #fff;
}
.action-history li.llm {
  background: rgba(136, 216, 241, 0.08);
  border-left: 3px solid var(--info);
  padding-left: 5px;
}
.action-history li.llm.cur {
  background: var(--accent);
}
.action-history li .llm-badge {
  margin-left: auto;
  align-self: center;
  white-space: nowrap;
  color: var(--info);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.action-history li.cur .llm-badge {
  color: #fff;
}
.llm-legend {
  font-size: 10px;
  font-weight: 500;
  color: var(--info);
  border: 1px solid var(--info);
  border-radius: 3px;
  padding: 0 4px;
  margin-left: 6px;
  text-transform: none;
  letter-spacing: 0;
  vertical-align: middle;
}
.action-history li.plan-exec {
  border-left: 3px solid rgba(136, 216, 241, 0.35);
  padding-left: 5px;
}
.action-history li.plan-exec .actor-llm_plan,
.action-history li.plan-exec .src-reflection_plan,
.action-history li.plan-exec .exec-suffix {
  color: #8a7a3d;
}
.action-history li.plan-exec .exec-suffix {
  font-size: 10px;
}
.action-history li.plan-exec.cur .actor-llm_plan,
.action-history li.plan-exec.cur .src-reflection_plan,
.action-history li.plan-exec.cur .exec-suffix {
  color: #fff;
}
.action-history li.level-hdr {
  background: var(--bg-deep);
  color: var(--accent);
  font-weight: 600;
  font-size: 12px;
  border-top: 2px solid var(--accent);
  border-bottom: 1px solid var(--accent);
  padding: 6px 8px;
  position: sticky;
  top: 0;
  z-index: 1;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 8px;
  align-items: baseline;
}
.action-history li.level-hdr .lvl-stat {
  color: var(--ok);
  font-size: 11px;
}
.action-history li.level-hdr.failed .lvl-stat {
  color: var(--muted);
}
.action-history li.level-hdr.retry .lvl-stat {
  color: var(--bad);
}
.action-history li.level-hdr .lvl-jump {
  font-size: 10px;
  color: var(--muted);
  cursor: pointer;
  text-decoration: underline;
}
.action-history li.level-hdr .lvl-jump:hover {
  color: var(--accent);
}
.card-hdr {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 6px;
}
.card-hdr h4 {
  margin: 0;
}
.legend {
  display: flex;
  gap: 10px;
  margin-bottom: 6px;
  font-size: 11px;
}
.legend .leg.verified {
  color: var(--ok);
}
.legend .leg.proposed {
  color: var(--info);
}
.legend .leg.transfer {
  color: #c084fc;
}
.kn-rules {
  list-style: none;
  padding: 0;
  margin: 0;
}
.kn-rules li {
  padding: 5px 6px;
  border-bottom: 1px solid #1f2c4f;
  font-size: 12px;
  display: grid;
  grid-template-columns: 50px 1fr auto;
  gap: 6px;
  align-items: baseline;
}
.kn-rules li:last-child {
  border-bottom: none;
}
.kn-rules li .conf {
  color: var(--muted);
  font-family: "Menlo", monospace;
}
.kn-rules li.high .conf {
  color: var(--ok);
}
.kn-rules li.bad .conf {
  color: var(--bad);
}
.kn-rules li .text {
  line-height: 1.4;
}
.kn-rules li .src {
  font-family: "Menlo", monospace;
  font-size: 10px;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 3px;
  white-space: nowrap;
}
.kn-rules li.src-verified .src {
  color: var(--ok);
  border-color: var(--ok);
}
.kn-rules li.src-reflection .src {
  color: var(--info);
  border-color: var(--info);
}
.kn-rules li.src-transfer .src {
  color: #c084fc;
  border-color: #c084fc;
}
.kn-rules li .born {
  display: block;
  color: var(--muted);
  font-family: "Menlo", monospace;
  font-size: 10px;
  margin-top: 2px;
}
.kn-rules li.fresh {
  background: rgba(79, 204, 48, 0.06);
}
.kn-rules li.fresh .born {
  color: var(--ok);
}
#memory-spark {
  display: block;
  width: 100%;
  height: 60px;
  background: var(--bg-card);
  border-radius: 3px;
}
#kn-compacted {
  white-space: pre-wrap;
  max-height: 180px;
  overflow-y: auto;
  color: var(--fg);
}
.kn-diff {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 12px;
}
.kn-diff li {
  padding: 3px 4px;
}
.kn-diff li.add {
  color: var(--ok);
}
.kn-diff li.add::before {
  content: "+ ";
}
.kn-diff li.del {
  color: var(--bad);
  text-decoration: line-through;
  opacity: .8;
}
.kn-diff li.del::before {
  content: "− ";
  text-decoration: none;
}
.kn-diff li.none {
  color: var(--muted);
  font-style: italic;
}
#reasoning {
  margin: 0 16px 12px;
}
#reasoning-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: 1fr 1fr auto;
  grid-template-areas: "board obs" "board rules" "resp  resp";
  gap: 10px;
}
#reasoning-grid .card {
  margin-bottom: 0;
}
#reasoning-grid .c-board {
  grid-area: board;
}
#reasoning-grid .c-obs {
  grid-area: obs;
}
#reasoning-grid .c-rules {
  grid-area: rules;
}
#reasoning-grid .c-resp {
  grid-area: resp;
}
#reasoning-grid .c-obs,
#reasoning-grid .c-rules {
  min-height: 0;
  display: flex;
  flex-direction: column;
}
#reasoning-grid .c-obs pre,
#reasoning-grid .c-rules pre {
  flex: 1 1 auto;
  min-height: 0;
  max-height: none;
}
#reasoning-grid pre {
  white-space: pre;
  overflow: auto;
  max-height: 320px;
  color: var(--fg);
  font-size: 11px;
  line-height: 1.35;
}
#reasoning-grid .c-board pre {
  max-height: 76vh;
}
#reasoning-body {
  white-space: pre-wrap;
  max-height: 62vh;
  overflow-y: auto;
  color: var(--fg);
  font-size: 12px;
  line-height: 1.5;
}
#reasoning-body .meta {
  color: var(--info);
}
#reasoning-body .add {
  color: var(--ok);
}
#reasoning-body .del {
  color: var(--bad);
}
#reasoning-body .plan {
  color: var(--accent);
  font-weight: 600;
}
#fsm-help {
  margin: 0 16px 24px;
}
#fsm-help p {
  margin-bottom: 8px;
  line-height: 1.5;
}
.stage-help {
  list-style: none;
  padding-left: 0;
}
.stage-help li {
  padding: 6px 0;
  line-height: 1.5;
  border-top: 1px solid var(--border);
}
.stage-help li:first-child {
  border-top: none;
}
.stage-pill {
  display: inline-block;
  padding: 1px 8px;
  margin-right: 6px;
  border-radius: 3px;
  color: #000;
  font-family: "Menlo", monospace;
  font-size: 11px;
  font-weight: 600;
  vertical-align: baseline;
}
#reflections-list {
  margin: 0 16px 24px;
}
#reflections-list ul {
  list-style: none;
  padding: 0;
}
#reflections-list li {
  padding: 4px 8px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  font-family: "Menlo", monospace;
  font-size: 12px;
  display: grid;
  grid-template-columns: 60px 60px 1fr;
  gap: 12px;
}
#reflections-list li:hover {
  background: var(--bg-card);
}
#reflections-list li.cur {
  background: var(--accent);
  color: #fff;
}
#reflections-list li .step {
  color: var(--muted);
}
#reflections-list li.cur .step {
  color: #fff;
}
#reflections-list li .delta {
  color: var(--ok);
}
#reflections-list li.cur .delta {
  color: #fff;
}
#kbd-help {
  text-align: center;
  padding: 14px;
  border-top: 1px solid var(--border);
}
.plan-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 0;
  font-size: 20px;
}
.plan-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 30px;
  padding: 0 4px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-card);
  color: var(--muted);
}
.plan-chip.done {
  color: var(--ok);
  border-color: var(--ok);
  background: rgba(79, 204, 48, 0.10);
}
.plan-chip.diverged {
  color: var(--bad);
  border-color: var(--bad);
  background: rgba(249, 60, 49, 0.12);
}
.plan-chip.pending {
  opacity: 0.55;
}
.plan-chip.current {
  outline: 2px solid var(--info);
  outline-offset: 1px;
}
#dpad {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 8px 2px 2px 2px;
}
.dpad-grid {
  display: grid;
  gap: 4px;
  grid-template-areas: ". u ." "l d r";
}
#key-up {
  grid-area: u;
}
#key-left {
  grid-area: l;
}
#key-down {
  grid-area: d;
}
#key-right {
  grid-area: r;
}
.dpad-side {
  display: flex;
  gap: 6px;
}
.keycap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 30px;
  font-size: 17px;
  border: 1px solid var(--border);
  border-bottom-width: 3px;
  border-radius: 6px;
  background: var(--bg-card);
  color: var(--muted);
  transition:
    background 80ms,
    color 80ms,
    border-color 80ms;
}
.keycap.active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
  border-bottom-width: 1px;
  transform: translateY(2px);
}
.keycap.key-confirm.active {
  background: var(--ok);
  border-color: var(--ok);
}
.keycap.key-reset.active {
  background: var(--warn);
  border-color: var(--warn);
  color: #222;
}
#dpad-label {
  min-width: 90px;
  text-align: center;
}
#btn-prev {
  transform: scaleX(-1);
}
@media (max-width: 1100px) {
  #topbar,
  #transport,
  #level-nav {
    flex-wrap: wrap;
    gap: 8px;
  }
  .hdr-left {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
  }
  #grid {
    grid-template-columns: minmax(0, 1fr);
    height: auto;
    min-height: 0;
  }
  #pane-now {
    height: 70vh;
  }
  #pane-memory {
    max-height: 70vh;
  }
  #crt-frame {
    width: 100%;
    max-width: 516px;
  }
  #game-canvas,
  #overlay-canvas {
    width: 100%;
    max-width: 512px;
    height: auto;
    aspect-ratio: 1 / 1;
  }
  #reasoning-grid {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto;
    grid-template-areas: "board" "obs" "rules" "resp";
  }
  #reasoning-grid .c-obs pre,
  #reasoning-grid .c-rules pre {
    max-height: 320px;
  }
  #reflections-ul li {
    flex-wrap: wrap;
  }
  #reflections-ul li span {
    white-space: normal;
    overflow-wrap: anywhere;
    min-width: 0;
  }
}