*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #6C63FF;
  --primary-dark: #5A52D5;
  --primary-light: #8B85FF;
  --secondary: #00D09E;
  --secondary-dark: #00B88A;
  --accent: #FF6B6B;
  --accent-dark: #E85555;
  --gold: #FFD700;
  --dark: #1A1A2E;
  --dark-card: #16213E;
  --dark-surface: #0F3460;
  --text-primary: #FFFFFF;
  --text-secondary: #B8B8D4;
  --text-muted: #7A7A9E;
  --success: #00D09E;
  --error: #FF6B6B;
  --warning: #FFB347;
  --easy: #00D09E;
  --medium: #FFB347;
  --hard: #FF6B6B;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.2);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-display: 'Fredoka One', cursive;
  --font-body: 'Nunito', sans-serif;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: linear-gradient(135deg, var(--dark) 0%, #0D0D2B 50%, var(--dark-surface) 100%);
  color: var(--text-primary);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

#app {
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.screen {
  display: none;
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  animation: screenIn 0.5s ease-out;
}

.screen.active {
  display: flex;
}

@keyframes screenIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.btn {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.1rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
  pointer-events: none;
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 14px 40px;
  box-shadow: 0 4px 20px rgba(108, 99, 255, 0.4);
}

.btn-primary:hover:not(:disabled) {
  box-shadow: 0 6px 30px rgba(108, 99, 255, 0.6);
  transform: translateY(-2px);
}

.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  padding: 14px 40px;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

#screen-menu {
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.menu-container {
  width: 100%;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.logo-section {
  text-align: center;
  padding: 30px 0 10px;
}

.logo-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--gold), #FFA500);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.8rem;
  font-weight: bold;
  color: var(--dark);
  margin: 0 auto 16px;
  box-shadow: 0 8px 32px rgba(255, 215, 0, 0.3);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.game-title {
  font-family: var(--font-display);
  font-size: 2.8rem;
  background: linear-gradient(135deg, var(--gold), #FFA500);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.game-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 4px;
}

.menu-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.input-group {
  position: relative;
  margin-bottom: 20px;
}

.input-group label {
  display: block;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.input-group input {
  width: 100%;
  padding: 16px 18px;
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  outline: none;
  transition: all var(--transition);
}

.input-group input::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}

.input-group input:focus {
  border-color: var(--primary);
  background: rgba(108, 99, 255, 0.08);
  box-shadow: 0 0 0 4px rgba(108, 99, 255, 0.15);
}

.char-count {
  position: absolute;
  right: 14px;
  bottom: 18px;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
}

.menu-card .btn-primary {
  width: 100%;
  font-size: 1.2rem;
  padding: 16px;
}

.leaderboard-section {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.trophy {
  color: var(--gold);
  font-size: 1.6rem;
}

.leaderboard-loading {
  text-align: center;
  color: var(--text-muted);
  padding: 20px;
  font-weight: 600;
}

.leaderboard-empty {
  text-align: center;
  color: var(--text-muted);
  padding: 20px;
  font-weight: 600;
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
}

.leaderboard-table th {
  text-align: left;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  padding: 8px 4px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-weight: 800;
}

.leaderboard-table td {
  padding: 10px 4px;
  font-size: 0.9rem;
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.leaderboard-table tr:last-child td {
  border-bottom: none;
}

.leaderboard-table .rank-col {
  width: 30px;
  text-align: center;
  color: var(--text-muted);
  font-weight: 800;
}

.leaderboard-table .rank-1 { color: var(--gold); }
.leaderboard-table .rank-2 { color: #C0C0C0; }
.leaderboard-table .rank-3 { color: #CD7F32; }

.leaderboard-table .name-col {
  color: var(--text-primary);
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.leaderboard-table .money-col {
  color: var(--secondary);
  text-align: right;
}

.leaderboard-table th.money-col {
  text-align: right;
}

.leaderboard-table .correct-col,
.leaderboard-table .wrong-col {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.leaderboard-table th.correct-col,
.leaderboard-table th.wrong-col {
  text-align: center;
}

#screen-game {
  flex-direction: column;
  max-width: 640px;
  margin: 0 auto;
  padding: 0;
}

.game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-stats {
  display: flex;
  gap: 20px;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  font-weight: 800;
}

.stat-value {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
}

#money-display {
  color: var(--secondary);
}

#wrong-counter {
  color: var(--accent);
}

.difficulty-badge {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
}

.difficulty-badge.easy {
  background: rgba(0, 208, 158, 0.2);
  color: var(--easy);
}

.difficulty-badge.medium {
  background: rgba(255, 179, 71, 0.2);
  color: var(--medium);
}

.difficulty-badge.hard {
  background: rgba(255, 107, 107, 0.2);
  color: var(--hard);
}

.game-body {
  flex: 1;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-bottom: 100px;
}

.question-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.question-number {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--primary-light);
  margin-bottom: 12px;
}

.question-text {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-primary);
}

.answers-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.answer-btn {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  padding: 18px 16px;
  background: rgba(255, 255, 255, 0.06);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition);
  text-align: left;
  line-height: 1.3;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  position: relative;
}

.answer-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.answer-btn:active:not(:disabled) {
  transform: translateY(0) scale(0.98);
}

.answer-btn .answer-letter {
  display: inline-block;
  width: 28px;
  height: 28px;
  line-height: 28px;
  text-align: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 800;
  margin-right: 10px;
  flex-shrink: 0;
}

.answer-btn.selected {
  border-color: var(--accent);
  background: rgba(255, 107, 107, 0.15);
}

.answer-btn.correct {
  border-color: var(--success);
  background: rgba(0, 208, 158, 0.15);
  animation: correctPulse 0.5s ease-out;
}

.answer-btn.wrong {
  border-color: var(--error);
  background: rgba(255, 107, 107, 0.15);
  animation: wrongShake 0.5s ease-out;
}

.answer-btn.reveal-correct {
  border-color: var(--success);
  background: rgba(0, 208, 158, 0.1);
}

.answer-btn:disabled {
  cursor: default;
  opacity: 0.6;
}

.answer-btn:disabled.correct,
.answer-btn:disabled.reveal-correct {
  opacity: 1;
}

.answer-btn:disabled.wrong {
  opacity: 1;
}

.answer-btn.removed {
  opacity: 0.2;
  pointer-events: none;
}

@keyframes correctPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.03); }
  100% { transform: scale(1); }
}

@keyframes wrongShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(5px); }
}

.lifeline-bar {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.btn-lifeline {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: 0.85rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.06);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-lifeline:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--warning);
}

.btn-lifeline:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.btn-lifeline.used {
  opacity: 0.4;
  cursor: not-allowed;
  border-color: rgba(255, 255, 255, 0.05);
}

.lifeline-icon {
  font-size: 1.1rem;
}

.lifeline-cost {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--warning);
}

.feedback-area {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 100px;
}

.feedback-card {
  display: none;
  align-items: center;
  gap: 16px;
  padding: 20px;
  border-radius: var(--radius-sm);
  animation: feedbackIn 0.4s ease-out;
  flex-wrap: wrap;
}

.feedback-card.show {
  display: flex;
}

.feedback-card.correct {
  background: rgba(0, 208, 158, 0.1);
  border: 2px solid rgba(0, 208, 158, 0.3);
}

.feedback-card.wrong {
  background: rgba(255, 107, 107, 0.1);
  border: 2px solid rgba(255, 107, 107, 0.3);
}

@keyframes feedbackIn {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.feedback-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.feedback-text {
  font-weight: 700;
  font-size: 1rem;
}

.feedback-money {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--gold);
  margin-left: auto;
  white-space: nowrap;
}

.feedback-explanation {
  display: none;
  width: 100%;
  margin-top: 8px;
  padding: 12px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.08);
  text-align: left;
}

.btn-next {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
  color: white;
  padding: 16px 32px;
  font-size: 1.1rem;
  box-shadow: 0 4px 20px rgba(0, 208, 158, 0.4);
  align-self: center;
  min-width: 200px;
}

.btn-next:hover {
  box-shadow: 0 6px 30px rgba(0, 208, 158, 0.6);
  transform: translateY(-2px);
}

#screen-result {
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.result-container {
  width: 100%;
  max-width: 420px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.result-icon {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  margin: 0 auto;
  animation: resultPop 0.6s ease-out;
}

.result-icon.victory {
  background: linear-gradient(135deg, var(--gold), #FFA500);
  box-shadow: 0 8px 32px rgba(255, 215, 0, 0.4);
}

.result-icon.gameover {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  box-shadow: 0 8px 32px rgba(255, 107, 107, 0.4);
}

@keyframes resultPop {
  0% { transform: scale(0) rotate(-10deg); opacity: 0; }
  60% { transform: scale(1.15) rotate(3deg); }
  100% { transform: scale(1) rotate(0); opacity: 1; }
}

.result-title {
  font-family: var(--font-display);
  font-size: 2rem;
}

.result-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.result-player {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--gold);
}

.result-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.result-stat {
  text-align: center;
  padding: 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
}

.result-stat-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  font-weight: 800;
  margin-bottom: 6px;
}

.result-stat-value {
  font-size: 1.4rem;
  font-weight: 800;
}

.money-earned { color: var(--secondary); }
.correct-count { color: var(--secondary); }
.wrong-count { color: var(--accent); }
.accuracy-pct { color: var(--primary-light); }

.result-name-message {
  grid-column: 1 / -1;
  text-align: center;
  padding: 10px 12px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--warning);
  background: rgba(255, 179, 71, 0.08);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 179, 71, 0.2);
}

.result-actions {
  display: flex;
  gap: 12px;
  flex-direction: column;
}

.result-actions .btn {
  width: 100%;
}

.money-float {
  position: fixed;
  pointer-events: none;
  z-index: 100;
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--gold);
  animation: moneyFloat 1.2s ease-out forwards;
}

@keyframes moneyFloat {
  0% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  100% {
    opacity: 0;
    transform: translateY(-80px) scale(1.3);
  }
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(108, 99, 255, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(0, 208, 158, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(255, 215, 0, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

#app {
  position: relative;
  z-index: 1;
}

@media (max-height: 650px) {
  html { font-size: 14px; }

  #screen-game {
    min-height: auto;
    max-height: 100vh;
    max-height: 100dvh;
  }

  .screen {
    min-height: 100vh;
    min-height: 100dvh;
    padding: 8px;
  }

  #screen-menu {
    padding: 12px;
    align-items: flex-start;
    overflow-y: auto;
  }

  .menu-container {
    gap: 12px;
    max-width: 420px;
  }

  .logo-section {
    padding: 10px 0 4px;
  }

  .logo-icon {
    width: 48px;
    height: 48px;
    font-size: 1.8rem;
    margin-bottom: 8px;
  }

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

  .game-subtitle {
    font-size: 0.9rem;
  }

  .menu-card {
    padding: 16px;
  }

  .input-group {
    margin-bottom: 12px;
  }

  .input-group label {
    font-size: 0.75rem;
  }

  .input-group input {
    padding: 10px 14px;
    font-size: 0.95rem;
  }

  .menu-card .btn-primary {
    padding: 12px;
    font-size: 1rem;
  }

  .leaderboard-section {
    padding: 12px;
  }

  .section-title {
    font-size: 1.1rem;
    margin-bottom: 10px;
  }

  .leaderboard-table td {
    padding: 6px 4px;
    font-size: 0.75rem;
  }

  .leaderboard-table th {
    padding: 4px 4px;
    font-size: 0.6rem;
  }

  .game-header {
    padding: 8px 12px;
    position: relative;
  }

  .header-stats {
    gap: 10px;
  }

  .stat-label {
    font-size: 0.55rem;
  }

  .stat-value {
    font-size: 0.85rem;
  }

  .difficulty-badge {
    padding: 4px 10px;
    font-size: 0.6rem;
  }

  .game-body {
    padding: 10px;
    gap: 10px;
    padding-bottom: 10px;
    overflow-y: auto;
    flex: 1;
  }

  .question-card {
    padding: 14px;
  }

  .question-number {
    font-size: 0.65rem;
    margin-bottom: 6px;
  }

  .question-text {
    font-size: 1rem;
  }

  .answers-grid {
    gap: 8px;
  }

  .answer-btn {
    padding: 12px 12px;
    font-size: 0.85rem;
  }

  .answer-btn .answer-letter {
    width: 22px;
    height: 22px;
    line-height: 22px;
    font-size: 0.7rem;
    margin-right: 8px;
  }

  .lifeline-bar {
    gap: 8px;
  }

  .btn-lifeline {
    padding: 8px 14px;
    font-size: 0.75rem;
  }

  .lifeline-icon {
    font-size: 0.9rem;
  }

  .lifeline-cost {
    font-size: 0.65rem;
  }

  .feedback-area {
    min-height: 60px;
    gap: 8px;
  }

  .feedback-card {
    padding: 12px;
    gap: 10px;
  }

  .feedback-icon {
    font-size: 1.4rem;
  }

  .feedback-text {
    font-size: 0.85rem;
  }

  .feedback-money {
    font-size: 0.8rem;
  }

  .feedback-explanation {
    padding: 10px 12px;
    font-size: 0.78rem;
  }

  .btn-next {
    padding: 12px 24px;
    font-size: 0.95rem;
    min-width: 160px;
  }

  #screen-result {
    padding: 12px;
  }

  .result-container {
    gap: 12px;
    max-width: 360px;
  }

  .result-icon {
    width: 64px;
    height: 64px;
    font-size: 2rem;
  }

  .result-title {
    font-size: 1.4rem;
  }

  .result-card {
    padding: 16px;
  }

  .result-player {
    font-size: 1.1rem;
    margin-bottom: 12px;
  }

  .result-stats {
    gap: 8px;
  }

  .result-stat {
    padding: 8px;
  }

  .result-stat-label {
    font-size: 0.6rem;
  }

  .result-stat-value {
    font-size: 1rem;
  }

  .result-actions {
    gap: 8px;
    flex-direction: row;
  }

  .result-actions .btn {
    padding: 10px 16px;
    font-size: 0.9rem;
  }

  .char-count {
    bottom: 12px;
    right: 12px;
    font-size: 0.65rem;
  }

  .money-float {
    font-size: 1.2rem;
  }

  #question-counter {
    font-size: 0.85rem;
  }

  #wrong-counter {
    font-size: 0.85rem;
  }

  #money-display {
    font-size: 0.85rem;
  }
}

@media (max-width: 480px) {
  .game-title { font-size: 2.2rem; }
  .logo-icon { width: 64px; height: 64px; font-size: 2.2rem; }
  .menu-card { padding: 20px; }
  .answers-grid { grid-template-columns: 1fr; gap: 10px; }
  .answer-btn { padding: 16px; font-size: 0.95rem; }
  .question-text { font-size: 1.1rem; }
  .game-header { padding: 12px 16px; }
  .header-stats { gap: 14px; }
  .stat-value { font-size: 1rem; }
  .leaderboard-table td { font-size: 0.8rem; padding: 8px 4px; }
  .game-body { padding: 16px; padding-bottom: 80px; }
  .result-stats { gap: 10px; }
  .result-stat-value { font-size: 1.2rem; }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .answers-grid { gap: 14px; }
  .answer-btn:hover:not(:disabled) .answer-letter {
    background: rgba(255, 255, 255, 0.2);
  }
  .leaderboard-table .name-col { max-width: 200px; }
  .game-header { padding: 18px 28px; }
  .game-body { padding: 28px; }
  .question-text { font-size: 1.3rem; }
}

@media (min-width: 1024px) {
  html { font-size: 17px; }

  #screen-game {
    max-width: 720px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    margin: 40px auto;
    min-height: auto;
    border: 1px solid rgba(255, 255, 255, 0.06);
    overflow: hidden;
  }

  .screen {
    min-height: auto;
  }

  .game-header {
    padding: 20px 32px;
    border-radius: var(--radius) var(--radius) 0 0;
  }

  .header-stats { gap: 32px; }
  .stat-label { font-size: 0.7rem; }
  .stat-value { font-size: 1.2rem; }
  .difficulty-badge { font-size: 0.8rem; padding: 8px 20px; }

  .game-body {
    padding: 32px;
    gap: 20px;
    padding-bottom: 32px;
  }

  .question-card {
    padding: 28px 32px;
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .question-number { font-size: 0.85rem; }
  .question-text { font-size: 1.4rem; }

  .answers-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }

  .answer-btn {
    padding: 20px 18px;
    font-size: 1.05rem;
    border-radius: var(--radius-sm);
  }

  .answer-btn .answer-letter {
    width: 32px;
    height: 32px;
    line-height: 32px;
    font-size: 0.9rem;
    margin-right: 12px;
    transition: all var(--transition);
  }

  .answer-btn:hover:not(:disabled) {
    border-color: var(--primary);
    background: rgba(108, 99, 255, 0.08);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  }

  .answer-btn:hover:not(:disabled) .answer-letter {
    background: var(--primary);
    color: white;
  }

  .btn-lifeline {
    padding: 14px 24px;
    font-size: 0.9rem;
  }

  .btn-lifeline:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(255, 179, 71, 0.15);
  }

  .feedback-card { padding: 24px; }
  .feedback-icon { font-size: 2.2rem; }
  .feedback-text { font-size: 1.1rem; }
  .feedback-money { font-size: 1rem; }
  .feedback-explanation { font-size: 0.9rem; padding: 14px 16px; }

  .btn-next {
    padding: 18px 40px;
    font-size: 1.15rem;
    min-width: 240px;
  }

  .btn-next:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(0, 208, 158, 0.5);
  }

  .menu-container { max-width: 520px; }
  .menu-card { padding: 32px; }
  .menu-card .btn-primary { font-size: 1.25rem; }

  .result-container { max-width: 460px; }
  .result-card { padding: 32px; }
  .result-stats { gap: 18px; }
  .result-stat { padding: 16px; }
  .result-stat-value { font-size: 1.5rem; }

  .result-actions { flex-direction: row; }
  .result-actions .btn { width: auto; flex: 1; }

  .leaderboard-section { padding: 28px; }
  .section-title { font-size: 1.5rem; }
  .leaderboard-table td { padding: 12px 6px; font-size: 0.95rem; }
  .leaderboard-table .name-col { max-width: 240px; }

  .input-group input {
    padding: 18px 20px;
    font-size: 1.15rem;
  }

  .game-title { font-size: 3.2rem; }
  .logo-icon { width: 90px; height: 90px; font-size: 3.2rem; }

  .btn-primary {
    padding: 16px 48px;
    font-size: 1.2rem;
  }

  .btn-secondary {
    padding: 16px 48px;
  }

  .btn-primary:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(108, 99, 255, 0.5);
  }

  .btn-secondary:hover {
    transform: translateY(-2px);
  }

  .lifeline-bar { gap: 16px; }
}