:root {
  --bg-0: #06121d;
  --bg-1: #11263b;
  --bg-2: #1d3c58;
  --card: rgba(11, 23, 36, 0.9);
  --card-2: rgba(17, 32, 49, 0.9);
  --line: rgba(175, 202, 220, 0.22);
  --text: #e8f2f8;
  --muted: #9cb2c0;
  --accent: #f7bb6a;
  --accent-2: #71c1ff;
  --good: #67d09b;
  --bad: #ef9262;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Space Grotesk", "Trebuchet MS", sans-serif;
  background:
    radial-gradient(900px 580px at 8% -15%, rgba(247, 187, 106, 0.22), transparent 65%),
    radial-gradient(900px 580px at 100% 6%, rgba(113, 193, 255, 0.18), transparent 60%),
    linear-gradient(150deg, var(--bg-0), var(--bg-1) 42%, var(--bg-2));
  min-height: 100vh;
}

.wrap {
  width: min(1480px, 96vw);
  margin: 0 auto;
  padding: 26px 0 40px;
}

.hero {
  background: linear-gradient(145deg, rgba(12, 24, 37, 0.95), rgba(16, 31, 48, 0.92));
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.34);
}

.eyebrow {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}

h1 {
  margin: 8px 0 8px;
  font-size: clamp(28px, 3.2vw, 42px);
}

.subtitle {
  margin: 0;
  color: #c7d7e1;
  line-height: 1.55;
  max-width: 980px;
}

.mode-note {
  margin: 12px 0 0;
  max-width: 980px;
  padding: 12px 14px;
  border: 1px solid rgba(247, 187, 106, 0.26);
  border-radius: 12px;
  background: rgba(42, 30, 12, 0.34);
  color: #f3d4ab;
  line-height: 1.5;
}

.controls {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr)) auto;
  gap: 10px;
  align-items: end;
}

.control {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  color: #a9bfcc;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  font-size: 11px;
}

input,
select,
button {
  border: 1px solid rgba(172, 198, 216, 0.28);
  background: rgba(8, 18, 28, 0.86);
  color: #e8f2f8;
  border-radius: 10px;
  font: inherit;
  padding: 9px 11px;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

button.primary {
  background: rgba(46, 96, 141, 0.86);
  border-color: rgba(113, 193, 255, 0.65);
}

button.ghost {
  background: rgba(48, 35, 16, 0.86);
  border-color: rgba(247, 187, 106, 0.5);
}

.button-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.status-row {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.status-chip {
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid rgba(178, 204, 221, 0.33);
  background: rgba(8, 19, 30, 0.8);
  font-size: 12px;
}

.layout {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(2, minmax(320px, 1fr));
  gap: 14px;
}

.panel {
  background: linear-gradient(170deg, var(--card), var(--card-2));
  border: 1px solid var(--line);
  border-radius: 14px;
  min-height: 200px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
  overflow: hidden;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(171, 196, 214, 0.16);
}

.panel-head h2 {
  margin: 0;
  font-size: 16px;
}

.hint {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

.play-panel {
  grid-row: span 2;
}

.play-board,
.policy-board {
  padding: 12px;
}

.grid {
  display: grid;
  gap: 4px;
  background: rgba(5, 15, 24, 0.75);
  border: 1px solid rgba(168, 195, 213, 0.2);
  border-radius: 12px;
  padding: 8px;
}

.cell {
  position: relative;
  border-radius: 8px;
  border: 1px solid rgba(179, 204, 220, 0.16);
  background: rgba(12, 26, 39, 0.92);
  color: #f6fbff;
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  transition: transform 100ms ease, border-color 100ms ease;
}

.cell.clickable:hover {
  transform: translateY(-1px);
  border-color: rgba(113, 193, 255, 0.7);
}

.cell.legal {
  box-shadow: inset 0 0 0 1px rgba(103, 208, 155, 0.72);
}

.cell.policy::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 8px;
  background: rgba(113, 193, 255, var(--policy, 0));
  pointer-events: none;
}

.cell .disc {
  width: 72%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.28);
}

.disc.p1 {
  background: #f7bb6a;
}

.disc.p2 {
  background: #72c0ff;
}

.cell.ttt.p1 {
  color: #f7bb6a;
}

.cell.ttt.p2 {
  color: #72c0ff;
}

.cell .prob {
  position: absolute;
  bottom: 2px;
  right: 4px;
  font-size: 9px;
  color: #dbeaf2;
  font-family: "JetBrains Mono", monospace;
}

.value-wrap {
  border-top: 1px solid rgba(171, 196, 214, 0.14);
  padding: 10px 12px 12px;
}

.value-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: #c6d8e5;
}

.value-meter {
  margin-top: 6px;
  height: 12px;
  border-radius: 999px;
  border: 1px solid rgba(177, 202, 218, 0.25);
  background: rgba(7, 17, 27, 0.9);
  overflow: hidden;
}

#value-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--bad), var(--accent), var(--good));
  transition: width 120ms ease;
}

.mono {
  font-family: "JetBrains Mono", monospace;
}

.small {
  margin-top: 8px;
  font-size: 11px;
  color: #b4cad7;
  white-space: pre-wrap;
}

.meta-box {
  border-top: 1px solid rgba(171, 196, 214, 0.14);
  padding: 10px 12px 12px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: #d2e5f3;
  white-space: pre-wrap;
}

.chart-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  min-height: 230px;
}

.scatter {
  min-height: 240px;
}

.top-actions {
  border-top: 1px solid rgba(171, 196, 214, 0.14);
  padding: 10px 12px 12px;
  display: grid;
  gap: 6px;
}

.action-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 8px;
  background: rgba(8, 18, 28, 0.75);
  border: 1px solid rgba(170, 197, 214, 0.18);
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 12px;
}

.archive-panel {
  margin-top: 14px;
}

#atlas-archive {
  padding: 12px;
}

#atlas-archive > summary {
  cursor: pointer;
  font-weight: 700;
  color: #d8e9f6;
  list-style: none;
}

#atlas-archive > summary::-webkit-details-marker {
  display: none;
}

.archive-note {
  margin: 10px 0;
  color: #b7cddd;
  font-size: 13px;
}

.archive-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.archive-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.archive-btn {
  border: 1px solid rgba(168, 194, 211, 0.3);
  background: rgba(8, 18, 28, 0.76);
  color: #d8ebf8;
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 12px;
}

.archive-btn.active {
  border-color: rgba(247, 187, 106, 0.7);
  background: rgba(66, 44, 16, 0.85);
}

.archive-detail {
  margin-top: 10px;
  min-height: 140px;
  border: 1px solid rgba(166, 193, 210, 0.24);
  border-radius: 10px;
  padding: 10px;
  background: rgba(7, 16, 25, 0.78);
  color: #d2e5f2;
  white-space: pre-wrap;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
}

@media (max-width: 1220px) {
  .controls {
    grid-template-columns: repeat(3, 1fr);
  }

  .button-row {
    grid-column: span 3;
  }
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .play-panel {
    grid-row: auto;
  }

  .controls {
    grid-template-columns: repeat(2, 1fr);
  }
}