.game-select-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 40px;
  padding: 20px;
  direction: rtl;
}

.game-select__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-align: center;
}


.game-cards {
  display: flex;
  flex-direction: row;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}


.game-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  width: 160px;
  height: 180px;
  background-color: var(--color-bg-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  padding: 16px;
}

.game-card:hover {
  border-color: var(--color-primary);
  background-color: var(--color-bg-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.game-card.selected {
  border-color: var(--color-accent);
  background-color: rgba(0,212,255,0.08);
  box-shadow: 0 0 18px rgba(0,212,255,0.3);
}

.game-card__icon {
  font-size: 3rem;
  line-height: 1;
}

.game-card--chess   .game-card__icon { color: #f0f0f0; }
.game-card--billiard .game-card__icon { color: #4cff6e; }
.game-card--domino  .game-card__icon { color: #ffd700; }

.game-card__name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  direction: rtl;
}


.game-options-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
  width: 100%;
  max-width: 480px;
  animation: fadeInUp 0.25s ease;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.015));
  box-shadow: var(--shadow-md);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.game-options-panel__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  direction: rtl;
}

.game-options-panel__desc {
  color: var(--color-text-muted);
  font-size: 0.86rem;
  line-height: 1.8;
  text-align: center;
}

.game-options-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  width: min(100%, 980px);
}

.game-options-grid--chess {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.game-options-panel--practice {
  border-color: rgba(108,99,255,0.4);
  background:
    radial-gradient(circle at top left, rgba(108,99,255,0.18), transparent 44%),
    linear-gradient(180deg, rgba(255,255,255,0.035), rgba(255,255,255,0.015));
}

.game-options__modes {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.game-mode-btn {
  padding: 8px 22px;
  background-color: var(--color-bg-card);
  border: 1.5px solid var(--color-border);
  border-radius: var(--border-radius-full);
  color: var(--color-text);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: 'Cairo', sans-serif;
  direction: rtl;
}

.game-mode-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.game-mode-btn.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}


.game-start-btn {
  padding: 12px 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--border-radius-full);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: 'Cairo', sans-serif;
  box-shadow: var(--shadow-glow);
  direction: rtl;
  border: none;
}

.game-start-btn:hover {
  transform: scale(1.04);
  box-shadow: 0 0 28px rgba(108,99,255,0.7);
}


.game-back-btn {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  cursor: pointer;
  font-family: 'Cairo', sans-serif;
  direction: rtl;
  transition: color var(--transition-fast);
}

.game-back-btn:hover {
  color: var(--color-primary);
}


#game-frame {
  flex: 1;
  min-height: 100%;
  display: none;
}

.game-frame__content {
  text-align: center;
  color: var(--color-text-muted);
  direction: rtl;
  padding: 28px 20px;
  width: 100%;
}

.game-frame__icon {
  font-size: 4rem;
  margin-bottom: 16px;
}

.game-frame__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}

.game-frame__subtitle {
  font-size: 0.9rem;
  margin-bottom: 22px;
}

.game-frame__spinner {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  color: var(--color-primary);
  font-size: 0.9rem;
}

.game-frame__exit-btn {
  margin-top: 20px;
  padding: 10px 28px;
  border-radius: 999px;
  background: rgba(231,76,60,0.15);
  color: var(--color-danger);
  border: 1px solid var(--color-danger);
  cursor: pointer;
  font-family: 'Cairo', sans-serif;
  font-size: 0.9rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.game-frame__exit-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}


.challenge-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
}

.challenge-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  direction: rtl;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.challenge-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.challenge-card__info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.challenge-card__game {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
}

.challenge-card__meta {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.challenge-card__cta {
  padding: 8px 14px;
  border-radius: var(--border-radius-full);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  border: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.challenge-card__cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}


.waiting-state {
  justify-content: center;
}

.waiting-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  padding: 24px 20px;
  text-align: center;
  box-shadow: var(--shadow-md);
  display: inline-flex;
  flex-direction: column;
  gap: 12px;
  min-width: 260px;
}

.waiting-card__icon {
  font-size: 3rem;
}

.waiting-card__title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-text);
}

.waiting-card__subtitle {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.waiting-card__spinner {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  color: var(--color-primary);
  font-size: 0.9rem;
}

.waiting-card__cancel {
  padding: 10px 16px;
  border-radius: var(--border-radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text);
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.waiting-card__cancel:hover {
  transform: translateY(-1px);
  border-color: var(--color-primary);
}

.panel--chess-training-center {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle at top center, rgba(108,99,255,0.12), transparent 38%),
    linear-gradient(180deg, rgba(17,17,34,0.98), rgba(13,13,27,1));
}

.chess-training-shell {
  height: 100%;
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 18px 22px;
  direction: ltr;
}

.chess-training-drawer {
  position: absolute;
  inset: 18px 22px;
  z-index: 3;
  transform: translateY(calc(-100% - 22px));
  transition: transform var(--transition-normal), opacity var(--transition-normal);
  opacity: 0;
  pointer-events: none;
}

.chess-training-drawer.is-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.chess-training-drawer__body {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.1);
  background:
    linear-gradient(180deg, rgba(22,22,44,0.98), rgba(12,12,24,0.98)),
    radial-gradient(circle at top center, rgba(108,99,255,0.12), transparent 48%);
  box-shadow: 0 20px 48px rgba(0,0,0,0.38);
  backdrop-filter: blur(10px);
}

.chess-training-shell__stage {
  position: relative;
  z-index: 2;
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(54px, 1fr) auto minmax(54px, 1fr);
  gap: 16px;
  align-items: stretch;
}

.chess-training-shell__rail {
  position: relative;
  z-index: 4;
  min-height: 0;
  display: flex;
  padding-top: 2px;
}

.chess-training-shell__rail--left {
  align-items: flex-start;
  justify-content: flex-start;
}

.chess-training-shell__rail--right {
  align-items: flex-start;
  justify-content: flex-end;
}

.chess-training-shell__board-column {
  position: relative;
  z-index: 2;
  min-width: 0;
  min-height: 0;
  display: flex;
  align-items: stretch;
  justify-content: center;
}

.chess-training-shell__icon-btn {
  width: 42px;
  min-width: 42px;
  height: 42px;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 14px;
  background: rgba(20,20,42,0.92);
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.chess-training-shell__icon-btn:hover,
.chess-training-shell__icon-btn.is-active {
  border-color: rgba(108,99,255,0.78);
  background: rgba(38,34,76,0.96);
  box-shadow: 0 10px 24px rgba(0,0,0,0.3);
}

.chess-training-shell__icon-btn:hover {
  transform: translateY(-1px);
}

.chess-training-shell__icon-btn--panel {
  width: 56px;
  min-width: 56px;
  height: 56px;
  flex-direction: column;
  gap: 1px;
}

.chess-training-shell__panel-icon {
  width: 19px;
  height: 19px;
}

.chess-training-shell__panel-arrow {
  transform: rotate(90deg);
}

.chess-training-shell__icon-btn--drawer-close {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 2;
}

.chess-stage {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  direction: ltr;
}

.chess-stage__board-wrap {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chess-board {
  width: min(
    calc(100vh - var(--total-header) - 40px),
    calc(100vw - var(--panel-left-width) - var(--panel-right-width) - 176px)
  );
  max-width: 100%;
  max-height: 100%;
  aspect-ratio: 1;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.12);
  background: #18172d;
  box-shadow: 0 18px 42px rgba(0,0,0,0.35);
  direction: ltr;
}

.chess-board__square {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  border: none;
  padding: 0;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.chess-board__square:hover {
  z-index: 1;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,0.14);
}

.chess-board__square.is-light {
  background: #e2d7f5;
}

.chess-board__square.is-dark {
  background: #6e5aa4;
}

.chess-board__square.is-selected {
  box-shadow: inset 0 0 0 3px rgba(94,234,212,0.95);
}

.chess-board__square.is-target::after {
  content: '';
  position: absolute;
  width: 18%;
  height: 18%;
  border-radius: 50%;
  background: rgba(41, 214, 120, 0.8);
}

.chess-board__piece {
  position: relative;
  z-index: 1;
  font-size: clamp(30px, 4.8vw, 54px);
  line-height: 1;
  font-family: "Segoe UI Symbol", "Noto Sans Symbols", serif;
  pointer-events: none;
  user-select: none;
}

.piece-white .chess-board__piece {
  color: #fffef9;
  text-shadow: 0 2px 0 rgba(0,0,0,0.24);
}

.piece-black .chess-board__piece {
  color: #111118;
  text-shadow: 0 1px 0 rgba(255,255,255,0.14);
}

.chess-board__coord {
  position: absolute;
  font-size: 0.68rem;
  font-weight: 700;
  opacity: 0.65;
  pointer-events: none;
}

.chess-board__coord--file {
  left: 8px;
  bottom: 6px;
}

.chess-board__coord--rank {
  right: 8px;
  top: 6px;
}

.chess-training-shell__exit-mark {
  font-size: 1.45rem;
  line-height: 1;
  transform: translateY(-1px);
}

.chess-training-confirm {
  position: absolute;
  inset: 0;
  z-index: 7;
  display: grid;
  place-items: center;
}

.chess-training-confirm__backdrop {
  position: absolute;
  inset: 0;
  border: none;
  background: rgba(4, 5, 12, 0.62);
  cursor: pointer;
}

.chess-training-confirm__dialog {
  position: relative;
  z-index: 1;
  min-width: 260px;
  max-width: calc(100% - 32px);
  padding: 22px 20px 18px;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.1);
  background: linear-gradient(180deg, rgba(24,24,46,0.98), rgba(13,13,28,0.98));
  box-shadow: 0 22px 48px rgba(0,0,0,0.42);
  direction: rtl;
  text-align: center;
}

.chess-training-confirm__title {
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 800;
}

.chess-training-confirm__actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 18px;
}

.chess-training-confirm__btn {
  min-width: 84px;
  padding: 10px 16px;
  border-radius: 14px;
  border: 1px solid var(--color-border);
  background: rgba(255,255,255,0.04);
  color: var(--color-text);
  font-family: 'Cairo', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.chess-training-confirm__btn:hover {
  transform: translateY(-1px);
  border-color: rgba(108,99,255,0.62);
}

.chess-training-confirm__btn--danger {
  border-color: rgba(231,76,60,0.58);
  background: rgba(231,76,60,0.14);
  color: #ffd7d2;
}

@media (max-width: 1380px) {
  .chess-board {
    width: min(
      calc(100vh - var(--total-header) - 40px),
      calc(100vw - var(--panel-left-width) - var(--panel-right-width) - 156px)
    );
  }
}

@media (max-width: 1180px) {
  .game-options-grid--chess {
    grid-template-columns: 1fr;
  }

  .chess-training-shell {
    padding: 16px 14px;
  }

  .chess-training-drawer {
    inset: 16px 14px;
  }

  .chess-training-shell__stage {
    grid-template-columns: 46px minmax(0, 1fr) 46px;
    gap: 10px;
  }

  .chess-training-shell__icon-btn {
    width: 38px;
    min-width: 38px;
    height: 38px;
  }

  .chess-training-shell__icon-btn--panel {
    width: 50px;
    min-width: 50px;
    height: 50px;
  }

  .chess-board {
    width: min(
      calc(100vh - var(--total-header) - 36px),
      calc(100vw - var(--panel-left-width) - var(--panel-right-width) - 124px)
    );
  }

  .chess-training-shell__icon-btn--drawer-close {
    top: 14px;
    right: 14px;
  }
}