:root {
  --game-shell-panel: var(--site-surface);
  --game-shell-panel-strong: var(--site-surface-strong);
  --game-shell-panel-soft: var(--site-surface-alt);
  --game-shell-border: var(--site-border);
  --game-shell-border-strong: var(--site-border-strong);
  --game-shell-text: var(--site-text);
  --game-shell-muted: var(--site-text-muted);
  --game-shell-accent: var(--site-accent);
  --game-shell-accent-strong: var(--site-accent-strong);
}

.game-shell-wrap,
.abalone-wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px 16px 42px;
  display: grid;
  gap: 18px;
}

.game-shell-panel,
.panel {
  padding: 14px;
}

.game-shell-hero,
.hero-panel {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-end;
}

.panel.game-shell-hero,
.panel.hero-panel {
  background: transparent;
  border: 0;
  box-shadow: none;
  padding: 0;
}

.hero-title {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  margin: 0 0 4px;
  line-height: 1.08;
}

.muted {
  color: var(--game-shell-muted);
}

.meta-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.meta-pill {
  border: 1px solid var(--game-shell-border);
  background: rgba(23, 31, 27, 0.62);
  color: var(--game-shell-muted);
  border-radius: 999px;
  padding: 0.24rem 0.62rem;
  font-size: 0.74rem;
  white-space: nowrap;
}

.game-shell-play,
.play-layout {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1.7fr) minmax(280px, 0.9fr);
  align-items: start;
}

.game-shell-board-panel,
.board-shell {
  padding: clamp(1rem, 2vw, 1.2rem);
}

.game-shell-board-header,
.board-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2px;
}

.game-shell-turn,
.turn-indicator {
  color: var(--game-shell-text);
  font-weight: 600;
}

.game-shell-status-copy,
.status-copy {
  margin-bottom: 8px;
}

.game-shell-banner,
.game-over {
  border: 1px solid rgba(169, 196, 178, 0.2);
  border-left-width: 3px;
  background: rgba(169, 196, 178, 0.08);
  color: var(--game-shell-text);
  border-radius: var(--site-radius-md);
  padding: 8px 10px;
  margin-bottom: 8px;
}

.game-shell-thinking,
.thinking {
  color: var(--game-shell-muted);
  font-size: 0.9rem;
}

.hidden {
  display: none !important;
}

.game-shell-side,
.side-rail {
  display: grid;
  gap: 14px;
  padding: 0;
}

.panel.game-shell-side,
.panel.side-rail {
  background: transparent;
  border: 0;
  box-shadow: none;
  padding: 0;
}

.game-shell-section,
.rail-section {
  border: 0;
  border-top: 1px solid var(--game-shell-border);
  border-radius: 0;
  padding: 0.95rem 0 0;
  background: transparent;
}

.game-shell-section h3,
.rail-section h3 {
  margin: 0 0 0.55rem;
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.game-shell-side > :first-child,
.side-rail > :first-child {
  border-top: 0;
  padding-top: 0;
}

.game-shell-control-grid,
.control-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.game-shell-control-grid label,
.control-grid label {
  font-size: 0.78rem;
  color: var(--game-shell-muted);
}

.game-shell-control-grid select,
.game-shell-section button,
.control-grid select,
button.ghost {
  background: rgba(23, 31, 27, 0.72);
  border: 1px solid var(--game-shell-border);
  color: var(--game-shell-text);
  border-radius: var(--site-radius-md);
  padding: 0.5rem 0.75rem;
  min-height: 38px;
}

.game-shell-control-grid select:focus-visible,
.game-shell-section button:focus-visible,
.control-grid select:focus-visible,
button.ghost:focus-visible,
.game-shell-tab:focus-visible,
.seg-btn:focus-visible {
  outline: 2px solid var(--game-shell-accent);
  outline-offset: 2px;
}

.game-shell-control-grid select:hover,
.game-shell-section button:hover,
.control-grid select:hover,
button.ghost:hover,
.game-shell-tab:hover,
.seg-btn:hover {
  border-color: var(--game-shell-border-strong);
}

.compact-stats .tiny {
  margin: 0 0 4px;
  font-size: 0.84rem;
}

.history-shell {
  min-height: 0;
}

.game-shell-history,
.history {
  max-height: 240px;
  min-height: 0;
  overflow: auto;
  border: 0;
  padding: 0;
  background: transparent;
  margin: 0;
}

.game-shell-history li,
.history li {
  border-top: 1px solid rgba(238, 243, 239, 0.06);
  margin: 0;
  padding: 0.5rem 0;
  color: var(--game-shell-muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.game-shell-history li:first-child,
.history li:first-child {
  border-top: 0;
  padding-top: 0;
}

.history-empty,
.game-shell-history-empty {
  list-style: none;
  color: var(--game-shell-muted);
}

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

.game-shell-learn,
.learn-panel {
  padding: clamp(0.95rem, 2vw, 1.1rem);
}

.game-shell-tabs,
.segmented {
  display: inline-flex;
  gap: 1rem;
  border: 0;
  border-bottom: 1px solid var(--game-shell-border);
  border-radius: 0;
  overflow: visible;
  margin-bottom: 1rem;
  padding-bottom: 0.15rem;
}

.game-shell-tab,
.seg-btn {
  background: transparent;
  border: 0;
  color: var(--game-shell-muted);
  padding: 0 0 0.72rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  font-size: 0.82rem;
  letter-spacing: 0.03em;
}

.game-shell-tab:last-child,
.seg-btn:last-child {
  border-right: 0;
}

.game-shell-tab.is-active,
.seg-btn.active {
  background: transparent;
  border-bottom-color: var(--game-shell-accent);
  color: var(--game-shell-text);
}

.game-shell-tab-panel,
.tab-panel {
  margin-top: 4px;
}

.rule-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

h2,
h3,
p.stat {
  margin-top: 0;
  margin-bottom: 6px;
}

.game-card {
  padding: 1rem 1.05rem;
}

.game-link {
  display: inline-block;
  margin-top: 0.85rem;
}

@media (max-width: 1080px) {
  .game-shell-play,
  .play-layout {
    grid-template-columns: 1fr;
  }

  .game-shell-history,
  .history {
    max-height: 220px;
    min-height: 0;
  }
}

@media (max-width: 760px) {
  .game-shell-wrap,
  .abalone-wrap {
    padding: 14px 10px 24px;
    gap: 12px;
  }

  .game-shell-panel,
  .panel {
    padding: 11px;
  }

  .game-shell-hero,
  .hero-panel {
    align-items: flex-start;
    flex-direction: column;
  }

  .game-shell-tabs,
  .segmented {
    display: grid;
    width: 100%;
    gap: 0;
  }

  .game-shell-tab,
  .seg-btn {
    border-bottom: 1px solid var(--game-shell-border);
    padding: 0.7rem 0;
  }

  .game-shell-tab:last-child,
  .seg-btn:last-child {
    border-bottom: 0;
  }

  .game-shell-button-row,
  .ui-row {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}