/* =========================================
   Games Section — RKoots
   ========================================= */

/* ---- Layout ---- */
.game-layout body,
body.game-layout {
  background: #0d0d1a;
}

.game-main {
  min-height: calc(100vh - 70px);
  padding: 0;
  background: #0d0d1a;
}

/* ---- Games Landing / Index pages ---- */
.games-hero {
  background: linear-gradient(135deg, #0a0a2e 0%, #1a1a4e 50%, #0d0d3a 100%);
  padding: 70px 20px 50px;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}

.games-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 80 80"><defs><pattern id="g" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M20 0L0 0 0 20" fill="none" stroke="rgba(102,126,234,0.12)" stroke-width="1"/></pattern></defs><rect width="80" height="80" fill="url(%23g)"/></svg>');
  opacity: 0.6;
}

.games-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

.games-hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  background: linear-gradient(90deg, #a78bfa, #667eea, #f093fb);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.games-hero p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
  margin: 0;
}

.games-hero .hero-badges {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.hero-badge {
  background: rgba(102,126,234,0.2);
  border: 1px solid rgba(102,126,234,0.4);
  color: #a78bfa;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* ---- Game Category Sections ---- */
.games-section {
  padding: 50px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.games-section-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 30px;
  color: white;
}

.games-section-title h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: white;
  margin: 0;
}

.games-section-title .section-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.section-icon.two-player {
  background: linear-gradient(135deg, #667eea, #764ba2);
}

.section-icon.challenge {
  background: linear-gradient(135deg, #f093fb, #f5576c);
}

/* ---- Game Cards Grid ---- */
.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.game-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 24px;
  text-decoration: none;
  color: white;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  overflow: hidden;
}

.game-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, #667eea, #764ba2);
  transform: scaleX(0);
  transition: transform 0.3s ease;
  transform-origin: left;
}

.game-card:hover {
  background: rgba(102,126,234,0.12);
  border-color: rgba(102,126,234,0.4);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(102,126,234,0.2);
  text-decoration: none;
  color: white;
}

.game-card:hover::before {
  transform: scaleX(1);
}

.game-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: rgba(102,126,234,0.2);
}

.game-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: white;
  margin: 0;
}

.game-card p {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  margin: 0;
  line-height: 1.5;
}

.game-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.game-tag {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 10px;
  font-weight: 500;
}

.tag-2p {
  background: rgba(102,126,234,0.25);
  color: #a78bfa;
}

.tag-challenge {
  background: rgba(240,147,251,0.2);
  color: #f093fb;
}

.play-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: #667eea;
  font-weight: 600;
}

/* ---- Individual Game Pages ---- */
.game-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  min-height: calc(100vh - 70px);
  background: #0d0d1a;
  color: white;
}

.game-header {
  width: 100%;
  max-width: 900px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.game-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.game-title h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  margin: 0;
}

.game-title .game-emoji {
  font-size: 1.8rem;
}

.back-link {
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s;
}

.back-link:hover {
  color: #a78bfa;
  text-decoration: none;
}

/* ---- 2-Player Split Layout ---- */
.split-game {
  width: 100%;
  max-width: 900px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px;
  overflow: hidden;
}

.split-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: rgba(0,0,0,0.3);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.player-score {
  display: flex;
  align-items: center;
  gap: 10px;
}

.player-score .label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  font-weight: 500;
}

.player-score .score {
  font-size: 1.6rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
}

.p1-score .score { color: #667eea; }
.p2-score .score { color: #f093fb; }

.turn-indicator {
  text-align: center;
  font-size: 0.9rem;
  font-weight: 600;
  color: white;
  padding: 6px 16px;
  background: rgba(102,126,234,0.2);
  border-radius: 20px;
}

.game-board-area {
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

/* ---- Tic Tac Toe Board ---- */
.ttt-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: min(340px, 90vw);
}

.ttt-cell {
  aspect-ratio: 1;
  background: rgba(255,255,255,0.06);
  border: 2px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  cursor: pointer;
  font-size: clamp(2rem, 8vw, 3.5rem);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  color: white;
}

.ttt-cell:hover:not(.taken) {
  background: rgba(102,126,234,0.2);
  border-color: rgba(102,126,234,0.5);
  transform: scale(1.05);
}

.ttt-cell.x { color: #667eea; }
.ttt-cell.o { color: #f093fb; }
.ttt-cell.winner { background: rgba(102,234,126,0.15); border-color: #4ade80; }

/* ---- Connect 4 ---- */
.c4-board {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  padding: 16px;
  background: rgba(0,0,0,0.4);
  border-radius: 16px;
  width: min(490px, 95vw);
}

.c4-col-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 8px;
  transition: background 0.2s;
  display: flex;
  justify-content: center;
  color: rgba(255,255,255,0.3);
  font-size: 0.8rem;
}

.c4-col-btn:hover { background: rgba(255,255,255,0.1); color: white; }

.c4-cell {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 2px solid rgba(255,255,255,0.1);
  transition: all 0.3s ease;
}

.c4-cell.p1 { background: #667eea; border-color: #4f63d2; box-shadow: 0 0 10px rgba(102,126,234,0.5); }
.c4-cell.p2 { background: #f5576c; border-color: #d44058; box-shadow: 0 0 10px rgba(245,87,108,0.5); }
.c4-cell.winner { animation: pulse-win 0.6s ease infinite alternate; }

@keyframes pulse-win {
  from { box-shadow: 0 0 8px currentColor; }
  to { box-shadow: 0 0 20px currentColor, 0 0 40px currentColor; }
}

/* ---- Reaction Tap ---- */
.reaction-arena {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  width: 100%;
  max-width: 700px;
  align-items: stretch;
}

.reaction-player-zone {
  border-radius: 20px;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  border: 3px solid transparent;
  transition: all 0.15s ease;
  gap: 14px;
  touch-action: manipulation;
}

.reaction-player-zone.p1-zone {
  background: rgba(102,126,234,0.1);
  border-color: rgba(102,126,234,0.3);
}

.reaction-player-zone.p2-zone {
  background: rgba(240,147,251,0.1);
  border-color: rgba(240,147,251,0.3);
}

.reaction-player-zone.tapped {
  transform: scale(0.96);
}

.reaction-player-zone.success {
  background: rgba(74,222,128,0.2);
  border-color: #4ade80;
}

.reaction-player-zone.fail {
  background: rgba(248,113,113,0.2);
  border-color: #f87171;
}

.reaction-player-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
}

.reaction-player-score {
  font-size: 2rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
}

.reaction-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px;
}

.reaction-signal {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: 3px solid rgba(255,255,255,0.2);
  transition: all 0.1s ease;
}

.reaction-signal.go {
  background: #4ade80;
  border-color: #16a34a;
  box-shadow: 0 0 20px #4ade80;
  animation: signal-pulse 0.3s ease;
}

.reaction-signal.wait {
  background: #fbbf24;
  border-color: #d97706;
}

@keyframes signal-pulse {
  0% { transform: scale(1.4); }
  100% { transform: scale(1); }
}

/* ---- Math Duel ---- */
.math-arena {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  width: 100%;
  max-width: 750px;
  align-items: start;
}

.math-problem-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding-top: 20px;
}

.math-problem {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: #fbbf24;
  text-align: center;
  line-height: 1.2;
}

.math-round-info {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}

.math-player-panel {
  background: rgba(255,255,255,0.04);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  border: 2px solid transparent;
}

.math-player-panel.p1-panel { border-color: rgba(102,126,234,0.3); }
.math-player-panel.p2-panel { border-color: rgba(240,147,251,0.3); }
.math-player-panel.correct { border-color: #4ade80; background: rgba(74,222,128,0.1); }
.math-player-panel.wrong { border-color: #f87171; background: rgba(248,113,113,0.1); }

.math-numpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
}

.math-key {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: white;
  font-size: 1.1rem;
  font-weight: 600;
  padding: 12px 0;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.15s ease;
  touch-action: manipulation;
  font-family: 'JetBrains Mono', monospace;
}

.math-key:hover, .math-key:active {
  background: rgba(102,126,234,0.3);
  border-color: #667eea;
  transform: scale(0.95);
}

.math-display {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.4rem;
  font-weight: 700;
  min-height: 44px;
  background: rgba(0,0,0,0.3);
  border-radius: 10px;
  padding: 8px 16px;
  width: 100%;
  text-align: center;
  color: white;
  letter-spacing: 2px;
}

/* ---- Ping Pong Canvas ---- */
.pong-container {
  width: 100%;
  max-width: 800px;
  position: relative;
}

#pongCanvas {
  width: 100%;
  border-radius: 16px;
  border: 2px solid rgba(255,255,255,0.1);
  background: #000;
  display: block;
  touch-action: none;
}

.pong-controls-hint {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.4);
  padding: 0 8px;
}

/* ---- Challenge Game Pages ---- */
.challenge-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
  min-height: calc(100vh - 70px);
  background: #0d0d1a;
  color: white;
  gap: 20px;
}

.challenge-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 24px;
  width: 100%;
  max-width: 1100px;
  align-items: start;
}

.challenge-game-area {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px;
  padding: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  min-height: 400px;
}

/* ---- Leaderboard Panel ---- */
.leaderboard-panel {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px;
  overflow: hidden;
  position: sticky;
  top: 90px;
}

.leaderboard-header {
  background: linear-gradient(135deg, rgba(102,126,234,0.3), rgba(118,75,162,0.3));
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.leaderboard-header h3 {
  font-size: 1rem;
  font-weight: 700;
  color: white;
  margin: 0;
}

.leaderboard-body {
  padding: 12px;
  max-height: 480px;
  overflow-y: auto;
}

.leaderboard-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  transition: background 0.2s;
}

.leaderboard-row:hover {
  background: rgba(255,255,255,0.05);
}

.leaderboard-row.current-user {
  background: rgba(102,126,234,0.15);
  border: 1px solid rgba(102,126,234,0.3);
}

.leaderboard-row.top-1 { background: rgba(255,215,0,0.1); }
.leaderboard-row.top-2 { background: rgba(192,192,192,0.08); }
.leaderboard-row.top-3 { background: rgba(205,127,50,0.08); }

.lb-rank {
  font-size: 0.85rem;
  font-weight: 700;
  min-width: 28px;
  text-align: center;
  color: rgba(255,255,255,0.5);
}

.lb-rank.gold { color: #fbbf24; font-size: 1.1rem; }
.lb-rank.silver { color: #94a3b8; font-size: 1.1rem; }
.lb-rank.bronze { color: #d97706; font-size: 1.1rem; }

.lb-name {
  flex: 1;
  font-size: 0.875rem;
  color: white;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lb-score {
  font-size: 0.875rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: #a78bfa;
}

.lb-divider {
  height: 1px;
  background: rgba(255,255,255,0.08);
  margin: 8px 12px;
}

.lb-user-rank {
  padding: 12px 20px;
  background: rgba(102,126,234,0.1);
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  text-align: center;
}

.lb-loading {
  padding: 30px;
  text-align: center;
  color: rgba(255,255,255,0.4);
  font-size: 0.875rem;
}

/* ---- Auth Panel ---- */
.auth-panel {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px;
  width: 100%;
  max-width: 1100px;
}

.auth-user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
}

.auth-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea, #764ba2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
  color: white;
  overflow: hidden;
}

.auth-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.auth-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: white;
}

.auth-signed-out-msg {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
  flex: 1;
}

.btn-google {
  display: flex;
  align-items: center;
  gap: 8px;
  background: white;
  color: #1a1a1a;
  border: none;
  padding: 9px 18px;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-google:hover {
  background: #f1f5f9;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.btn-google img {
  width: 18px;
  height: 18px;
}

.btn-signout {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.7);
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-signout:hover {
  background: rgba(248,113,113,0.2);
  border-color: #f87171;
  color: #f87171;
}

/* ---- Score Submit ---- */
.score-submit-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 20px;
  background: rgba(74,222,128,0.08);
  border: 1px solid rgba(74,222,128,0.3);
  border-radius: 16px;
  width: 100%;
}

.final-score-display {
  text-align: center;
}

.final-score-display .score-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 4px;
}

.final-score-display .score-value {
  font-size: 3rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: #4ade80;
}

.final-score-display .score-unit {
  font-size: 1rem;
  color: rgba(255,255,255,0.6);
  margin-left: 4px;
}

.btn-submit-score {
  background: linear-gradient(135deg, #4ade80, #22c55e);
  color: #0a1a0a;
  border: none;
  padding: 12px 28px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-submit-score:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(74,222,128,0.3);
}

.btn-submit-score:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-play-again {
  background: rgba(102,126,234,0.2);
  border: 1px solid rgba(102,126,234,0.5);
  color: #a78bfa;
  padding: 10px 24px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-play-again:hover {
  background: rgba(102,126,234,0.35);
  transform: translateY(-1px);
}

/* ---- Reaction Speed Game ---- */
.reaction-circle-area {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  min-height: 260px;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.reaction-circle {
  width: clamp(120px, 25vw, 180px);
  height: clamp(120px, 25vw, 180px);
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: 4px solid rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  transition: all 0.1s ease;
  text-align: center;
  padding: 20px;
}

.reaction-circle.waiting { background: rgba(251,191,36,0.2); border-color: #fbbf24; color: #fbbf24; }
.reaction-circle.go { background: rgba(74,222,128,0.3); border-color: #4ade80; color: #4ade80; box-shadow: 0 0 30px rgba(74,222,128,0.4); animation: go-pulse 0.3s ease; }
.reaction-circle.too-early { background: rgba(248,113,113,0.3); border-color: #f87171; color: #f87171; }
.reaction-circle.done { background: rgba(102,126,234,0.2); border-color: #667eea; color: #a78bfa; }

@keyframes go-pulse { 0%{transform:scale(1.15)} 100%{transform:scale(1)} }

.reaction-stats {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.reaction-stat {
  text-align: center;
  background: rgba(255,255,255,0.05);
  padding: 10px 16px;
  border-radius: 12px;
  min-width: 80px;
}

.reaction-stat .stat-val {
  font-size: 1.3rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: #a78bfa;
}

.reaction-stat .stat-lbl {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.4);
  margin-top: 2px;
}

/* ---- Number Memory ---- */
.memory-display {
  font-size: clamp(2rem, 8vw, 4rem);
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: #fbbf24;
  letter-spacing: 6px;
  text-align: center;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.memory-input-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 100%;
}

.memory-input {
  background: rgba(0,0,0,0.3);
  border: 2px solid rgba(255,255,255,0.2);
  color: white;
  font-size: 1.5rem;
  font-family: 'JetBrains Mono', monospace;
  text-align: center;
  padding: 12px 20px;
  border-radius: 12px;
  width: 100%;
  max-width: 300px;
  letter-spacing: 4px;
  transition: border-color 0.2s;
}

.memory-input:focus {
  outline: none;
  border-color: #667eea;
}

.memory-numpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: 100%;
  max-width: 260px;
}

.memory-key {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: white;
  font-size: 1.2rem;
  font-weight: 600;
  padding: 14px 0;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.15s;
  touch-action: manipulation;
  font-family: 'JetBrains Mono', monospace;
}

.memory-key:hover, .memory-key:active {
  background: rgba(102,126,234,0.3);
  border-color: #667eea;
  transform: scale(0.95);
}

.level-badge {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* ---- Typing Speed ---- */
.typing-text-display {
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 20px;
  font-size: 1rem;
  line-height: 1.8;
  width: 100%;
  font-family: 'JetBrains Mono', monospace;
  max-height: 140px;
  overflow: hidden;
  position: relative;
}

.typing-char.correct { color: #4ade80; }
.typing-char.wrong { color: #f87171; background: rgba(248,113,113,0.2); border-radius: 2px; }
.typing-char.current { background: rgba(102,126,234,0.4); border-radius: 2px; color: white; }
.typing-char.pending { color: rgba(255,255,255,0.4); }

.typing-input {
  background: rgba(0,0,0,0.3);
  border: 2px solid rgba(255,255,255,0.2);
  color: white;
  font-size: 1rem;
  font-family: 'JetBrains Mono', monospace;
  padding: 12px 16px;
  border-radius: 12px;
  width: 100%;
  transition: border-color 0.2s;
  resize: none;
}

.typing-input:focus {
  outline: none;
  border-color: #667eea;
}

.typing-stats {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}

.typing-stat {
  text-align: center;
  background: rgba(255,255,255,0.05);
  padding: 10px 20px;
  border-radius: 12px;
}

.typing-stat .stat-val {
  font-size: 1.6rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: #a78bfa;
}

.typing-stat .stat-lbl {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.4);
}

/* ---- General Game Buttons ---- */
.btn-game-action {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  border: none;
  padding: 12px 30px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-game-action:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102,126,234,0.4);
}

.btn-game-reset {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.7);
  padding: 10px 22px;
  border-radius: 10px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-game-reset:hover {
  background: rgba(255,255,255,0.15);
  color: white;
}

.game-status-msg {
  font-size: 1rem;
  font-weight: 600;
  color: rgba(255,255,255,0.8);
  text-align: center;
  min-height: 28px;
}

.game-status-msg.win { color: #4ade80; }
.game-status-msg.lose { color: #f87171; }
.game-status-msg.draw { color: #fbbf24; }

/* ---- Toast Notification ---- */
.game-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: rgba(15,15,30,0.95);
  border: 1px solid rgba(255,255,255,0.15);
  color: white;
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 9999;
  transition: transform 0.3s ease;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
  white-space: nowrap;
}

.game-toast.show { transform: translateX(-50%) translateY(0); }
.game-toast.success { border-color: rgba(74,222,128,0.5); color: #4ade80; }
.game-toast.error { border-color: rgba(248,113,113,0.5); color: #f87171; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .challenge-layout {
    grid-template-columns: 1fr;
  }
  .leaderboard-panel {
    position: static;
  }
}

@media (max-width: 640px) {
  .math-arena {
    grid-template-columns: 1fr;
    max-width: 340px;
  }
  .math-problem-center { order: -1; }
  .reaction-arena {
    grid-template-columns: 1fr 50px 1fr;
    gap: 6px;
  }
  .reaction-player-zone { min-height: 200px; }
  .split-top-bar { padding: 10px 14px; }
  .c4-board { gap: 4px; padding: 10px; }
  .game-header { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 400px) {
  .reaction-arena { grid-template-columns: 1fr 40px 1fr; }
  .ttt-board { width: min(280px, 92vw); }
}

/* ---- Nav Dropdown (Games menu) ---- */
.nav-item.has-dropdown {
  position: relative;
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: white;
  border: 1px solid #e9ecef;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.12);
  padding: 8px;
  min-width: 160px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  z-index: 1000;
}

.nav-item.has-dropdown:hover .nav-dropdown,
.nav-item.has-dropdown:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  top: calc(100% + 4px);
}

.nav-dropdown a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  color: #2c3e50;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 8px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.nav-dropdown a:hover {
  background: rgba(102,126,234,0.1);
  color: #667eea;
  text-decoration: none;
}

.nav-dropdown-arrow {
  font-size: 0.65rem;
  margin-left: 2px;
  transition: transform 0.2s;
}

.nav-item.has-dropdown:hover .nav-dropdown-arrow {
  transform: rotate(180deg);
}

/* Mobile nav games accordion */
.mobile-nav-sub {
  display: none;
  flex-direction: column;
  gap: 2px;
  padding: 6px 0 6px 36px;
}

.mobile-nav-sub.open { display: flex; }

.mobile-nav-sub a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  color: #2c3e50;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 8px;
  transition: all 0.2s;
}

.mobile-nav-sub a:hover {
  background: rgba(102,126,234,0.1);
  color: #667eea;
}

.mobile-nav-toggle-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  color: #2c3e50;
  text-decoration: none;
  font-weight: 500;
  border-radius: 8px;
  transition: all 0.3s ease;
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-size: 1rem;
  font-family: inherit;
  min-height: 48px;
}

.mobile-nav-toggle-btn:hover {
  background: #f8f9fa;
  color: #667eea;
}

.mobile-nav-caret {
  margin-left: auto;
  font-size: 0.7rem;
  transition: transform 0.2s;
}

.mobile-nav-toggle-btn.open .mobile-nav-caret {
  transform: rotate(180deg);
}