:root {
  color-scheme: light;
  --bg: #f7f8fa;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #d9dee7;
  --accent: #2563eb;
  --accent-soft: #e8f0ff;
  --ai: #7c3aed;
  --ai-soft: #f1ebff;
  --win: #0f766e;
  --win-soft: #e2f7f3;
  --draw: #6b7280;
  --draw-soft: #eef0f3;
  --shadow: 0 14px 40px rgba(31, 41, 55, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

main {
  width: min(100%, 420px);
  display: grid;
  gap: 22px;
}

.game {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 22px;
  display: grid;
  gap: 24px;
}

header {
  display: grid;
  gap: 8px;
  justify-items: center;
  text-align: center;
}

.logo {
  width: min(234px, 82%);
  height: auto;
  display: block;
  margin-bottom: 6px;
}

h1 {
  margin: 0;
  font-size: 32px;
  line-height: 1.1;
  font-weight: 700;
}

.title-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 42px;
}

.ai-watch-icon {
  display: none;
  width: 51px;
  height: 51px;
  flex: 0 0 51px;
}

.ai-icons-visible .ai-watch-icon {
  display: block;
}

.training-mode .ai-watch-icon {
  display: block;
  animation: flash 1800ms ease-in-out infinite;
}

.training-mode .ai-watch-icon:last-child {
  animation-delay: 900ms;
}

@keyframes flash {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.28;
    transform: scale(0.92);
  }
}

.status {
  position: relative;
  min-height: 44px;
  display: grid;
  place-items: center;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 18px;
  font-weight: 700;
  text-align: center;
}

.status-message {
  padding: 0 30px;
}

.status-inspect {
  position: absolute;
  right: 8px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: currentColor;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.status-inspect:hover {
  background: rgba(15, 118, 110, 0.1);
}

.status-inspect:focus-visible,
.dialog-close:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.28);
  outline-offset: 2px;
}

.status-inspect[hidden] {
  display: none;
}

.status.win {
  background: var(--win-soft);
  color: var(--win);
}

.status.draw {
  background: var(--draw-soft);
  color: var(--draw);
}

.status.ai-win {
  background: var(--ai-soft);
  color: var(--ai);
}

.status.training {
  background: var(--ai-soft);
  color: var(--ai);
  animation: status-blink 900ms ease-in-out infinite;
}

@keyframes status-blink {
  0%, 100% {
    opacity: 1;
  }

  50% {
    opacity: 0.42;
  }
}

.mode-panel {
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcff;
}

.mode-panel[hidden] {
  display: none;
}

.panel-stat {
  min-width: 0;
  display: grid;
  gap: 5px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.panel-label {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.25;
  font-weight: 700;
}

.panel-stat strong {
  color: var(--ai);
  font-size: 25px;
  line-height: 1;
}

.recorded-info {
  gap: 10px;
}

.recorded-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.recorded-stat {
  min-width: 0;
  display: grid;
  gap: 5px;
  padding: 9px;
  border-radius: 6px;
  background: var(--ai-soft);
}

.recorded-stat span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.25;
  font-weight: 700;
}

.panel-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.panel-button {
  min-width: 0;
  min-height: 40px;
  padding: 0 10px;
  border: 0;
  border-radius: 8px;
  background: #eef0f3;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.panel-button.primary {
  background: var(--ai);
  color: #ffffff;
}

.panel-button:hover:not(:disabled) {
  background: #e1e5eb;
}

.panel-button.primary:hover:not(:disabled) {
  background: #6d28d9;
}

.panel-button:disabled {
  color: var(--muted);
  background: #f3f4f6;
  cursor: default;
}

.confidence-chart {
  min-width: 0;
  padding: 8px 8px 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.confidence-chart svg {
  width: 100%;
  height: auto;
  display: block;
}

.chart-axis {
  stroke: var(--line);
  stroke-width: 2;
}

.chart-line {
  fill: none;
  stroke: var(--ai);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 3;
}

.chart-dot {
  fill: var(--ai);
  stroke: #ffffff;
  stroke-width: 2;
}

.chart-label,
.chart-move-label {
  fill: var(--muted);
  font-size: 10px;
  font-weight: 700;
}

.chart-move-label {
  text-anchor: middle;
}

.recorded-moves-dialog {
  width: min(92vw, 420px);
  max-height: min(82vh, 720px);
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  box-shadow: 0 20px 60px rgba(31, 41, 55, 0.24);
}

.recorded-moves-dialog::backdrop {
  background: rgba(31, 41, 55, 0.48);
}

.dialog-header {
  position: sticky;
  top: 0;
  z-index: 1;
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.dialog-header h2 {
  margin: 0;
  font-size: 20px;
  line-height: 1.2;
}

.dialog-close {
  width: 32px;
  height: 32px;
  flex: 0 0 32px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: #eef0f3;
  color: var(--text);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}

.dialog-close:hover {
  background: #e1e5eb;
}

.recorded-moves-list {
  max-height: calc(min(82vh, 720px) - 55px);
  overflow-y: auto;
  display: grid;
  gap: 14px;
  padding: 14px;
}

.recorded-move-item {
  display: grid;
  gap: 8px;
  justify-items: center;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcff;
}

.recorded-move-item h3 {
  width: 100%;
  margin: 0;
  font-size: 15px;
  line-height: 1.2;
}

.recorded-board {
  width: min(100%, 210px);
  aspect-ratio: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5px;
}

.recorded-board-cell {
  min-width: 0;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
}

.recorded-board-cell.recorded-move-cell {
  border: 2px solid var(--ai);
  background: #fed13f;
  color: #111827;
}

.board {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  aspect-ratio: 1;
  margin: 6px 0 8px;
}

.cell {
  min-width: 0;
  width: 100%;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  appearance: none;
  background: #ffffff;
  color: var(--text);
  font-family: inherit;
  font-size: clamp(42px, 17vw, 68px);
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition: border-color 140ms ease, background 140ms ease, transform 140ms ease;
}

.cell:hover:not(:disabled) {
  border-color: var(--accent);
  background: #fbfdff;
  transform: translateY(-1px);
}

.cell:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.28);
  outline-offset: 3px;
}

.cell:disabled {
  cursor: default;
}

.cell.winning-cell {
  border-color: var(--win);
  background: var(--win-soft);
  color: var(--win);
}

.actions {
  display: flex;
  justify-content: center;
}

.mode-control {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.mode-control label {
  color: var(--text);
  font-size: 16px;
  font-weight: 700;
}

.mode-control select {
  max-width: 100%;
  min-height: 40px;
  min-width: 170px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fed13f;
  color: #111827;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

.mode-control select:disabled {
  color: var(--muted);
  background: #f3f4f6;
  cursor: default;
}

.reset {
  min-height: 42px;
  padding: 0 18px;
  border: 0;
  border-radius: 8px;
  background: var(--text);
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}

.reset:hover {
  background: #111827;
}

@media (max-width: 380px) {
  body {
    padding: 14px;
  }

  .game {
    padding: 16px;
  }

  h1 {
    font-size: 27px;
  }

  .ai-watch-icon {
    width: 39px;
    height: 39px;
    flex-basis: 39px;
  }

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