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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  text-align: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  position: relative;
  overflow-x: hidden;
}

.container {
  max-width: 600px;
  width: 100%;
  position: relative;
  z-index: 10;
}

/* New Game Info Panel */
.game-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 15px;
  padding: 0 10px;
}

.difficulty-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  padding: 8px 12px;
  border-radius: 20px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.difficulty-selector label {
  font-size: 0.9rem;
  font-weight: 500;
}

.difficulty-selector select {
  padding: 4px 8px;
  border: none;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.2);
  color: white;
  font-size: 0.9rem;
  cursor: pointer;
}

.difficulty-selector select:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.3);
}

.score-panel {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

/* Theme Toggle Switch */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  padding: 8px 12px;
  border-radius: 20px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.theme-toggle label {
  font-size: 0.9rem;
  font-weight: 500;
}

.theme-switch {
  display: inline-block;
  height: 24px;
  position: relative;
  width: 44px;
  cursor: pointer;
  vertical-align: middle;
}

.theme-switch input {
  display: none;
}

.slider {
  background-color: #ccc;
  bottom: 0;
  cursor: pointer;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
  transition: .4s;
  border-radius: 24px;
}

.slider:before {
  background-color: white;
  bottom: 4px;
  content: "";
  height: 16px;
  left: 4px;
  position: absolute;
  transition: .4s;
  width: 16px;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: #667eea;
}

input:checked + .slider:before {
  transform: translateX(20px);
}

/* Light theme overrides */
.theme-light {
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  color: #333;
}

.theme-light .game {
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.theme-light .target-box,
.theme-light .current-box {
  color: #333;
}

.theme-light .message {
  color: #333;
}

.theme-light .subtitle {
  color: #555;
}

.theme-light h1 {
  color: #333;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.theme-light .btn-instructions,
.theme-light .btn-undo,
.theme-light .btn-hint,
.theme-light .btn-share,
.theme-light .btn-settings {
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.05) 100%);
  color: #333;
  border: 1px solid rgba(0, 0, 0, 0.2);
}

.theme-light .btn-instructions:hover,
.theme-light .btn-undo:hover,
.theme-light .btn-hint:hover,
.theme-light .btn-share:hover,
.theme-light .btn-settings:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.15) 0%, rgba(0, 0, 0, 0.1) 100%);
}

.theme-light .score-item,
.theme-light .difficulty-selector,
.theme-light .theme-toggle {
  background: rgba(0, 0, 0, 0.05);
}

.score-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(255, 255, 255, 0.1);
  padding: 8px 12px;
  border-radius: 10px;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  min-width: 60px;
}

.score-label {
  font-size: 0.75rem;
  opacity: 0.8;
  margin-bottom: 2px;
}

.score-value {
  font-size: 1.1rem;
  font-weight: bold;
  min-width: 20px;
  display: inline-block;
}

/* Style for score spans */
.wins,
.losses,
.streak,
.best-streak {
  font-size: 1.1rem;
  font-weight: bold;
  min-width: 20px;
  display: inline-block;
}

.game-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.game-controls .btn {
  padding: 8px 12px;
  font-size: 0.9rem;
}

.header {
  margin-bottom: 40px;
  animation: fadeInDown 0.6s ease;
}

h1 {
  font-size: 3rem;
  margin-bottom: 10px;
  text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.3);
  letter-spacing: 2px;
}

.subtitle {
  font-size: 1.1rem;
  opacity: 0.9;
  font-weight: 300;
  color: white;
}

.game {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 20px;
  padding: 40px 30px;
  margin-bottom: 30px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
  animation: slideUp 0.6s ease;
}

.stats {
  display: flex;
  gap: 30px;
  justify-content: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.stat-box {
  flex: 1;
  min-width: 140px;
  padding: 25px 20px;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.stat-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.target-box {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.current-box {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  color: white;
}

.stat-label {
  font-size: 0.9rem;
  margin-bottom: 8px;
  opacity: 0.9;
  font-weight: 500;
}

.target,
.current {
  font-size: 2.5rem;
  font-weight: bold;
  display: block;
  animation: popIn 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.message {
  font-size: 1.2rem;
  color: white;
  margin: 20px 0;
  font-weight: 500;
  min-height: 30px;
  animation: fadeIn 0.5s ease;
}

.button-container {
  position: relative;
  margin-top: 20px;
}

.click-display {
  position: absolute;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 3rem;
  font-weight: bold;
  color: #667eea;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
  opacity: 0;
  pointer-events: none;
  z-index: 10;
  min-width: 80px;
  text-align: center;
}

.click-display.show {
  animation: floatUp 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
}

.buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 15px 40px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  border-radius: 12px;
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  flex: 1;
  min-width: 150px;
  max-width: 280px;
}

.btn-add {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.btn-add:hover:not(.btn-disabled) {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.btn-add:active:not(.btn-disabled) {
  transform: translateY(-1px);
}

.btn-reset {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  color: white;
}

.btn-reset:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(245, 87, 108, 0.4);
}

.btn-reset:active {
  transform: translateY(-1px);
}

/* New button styles */
.btn-instructions,
btn-undo,
btn-hint,
btn-share,
btn-settings {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.2) 0%,
    rgba(255, 255, 255, 0.1) 100%
  );
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-instructions:hover,
btn-undo:hover,
btn-hint:hover,
btn-share:hover,
btn-settings:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.3) 0%,
    rgba(255, 255, 255, 0.2) 100%
  );
}

.btn-instructions:active,
btn-undo:active,
btn-hint:active,
btn-share:active,
btn-settings:active {
  transform: translateY(0);
}

/* Win/Lose states */
.win {
  background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
  animation: celebrate 0.6s ease;
}

.win .message {
  color: #38ef7d;
  font-weight: bold;
  font-size: 1.4rem;
}

.lose {
  background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
  animation: shake 0.5s ease;
}

.lose .message {
  color: #f45c43;
  font-weight: bold;
  font-size: 1.4rem;
}

/* Overlay Styles */
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  -webkit-backdrop-filter: blur(5px);
  backdrop-filter: blur(5px);
}

.overlay.active {
  display: flex;
}

.overlay-content {
  background: rgba(255, 255, 255, 0.9);
  color: #333;
  padding: 30px;
  border-radius: 20px;
  width: 90%;
  max-width: 400px;
  text-align: center;
  position: relative;
  animation: fadeInOverlay 0.4s ease;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.overlay-content h2 {
  margin-bottom: 20px;
  color: #667eea;
}

.overlay-content p {
  margin-bottom: 20px;
  line-height: 1.5;
}

.setting {
  margin: 15px 0;
  text-align: left;
}

.setting label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
}

.setting input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.setting select {
  width: 100%;
  padding: 8px;
  border: 1px solid #ddd;
  border-radius: 6px;
  background: white;
  font-size: 0.9rem;
}

.btn-close-overlay {
  margin-top: 20px;
  padding: 10px 25px;
  font-size: 0.9rem;
}

/* Share Overlay Specific */
.share-buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 20px;
}

.btn-share-twitter,
.btn-share-facebook,
.btn-copy-link {
  padding: 8px 16px;
  font-size: 0.9rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-share-twitter {
  background: #1da1f2;
  color: white;
}

.btn-share-facebook {
  background: #1877f2;
  color: white;
}

.btn-copy-link {
  background: #667eea;
  color: white;
}

.btn-share-twitter:hover,
.btn-share-facebook:hover,
.btn-copy-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-share-twitter:active,
.btn-share-facebook:active,
.btn-copy-link:active {
  transform: translateY(0);
}

/* Confetti Container */
.confetti-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 999;
  overflow: hidden;
}

.confetti {
  position: absolute;
  width: 10px;
  height: 10px;
  background: hsl(var(--hue), 80%, 50%);
  animation: fall linear forwards;
  opacity: 0.8;
}

/* Themes */
.theme-dark {
  background: linear-gradient(135deg, #2c3e50 0%, #4a5568 100%);
}

.theme-dark .game {
  background: rgba(45, 55, 72, 0.8);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.theme-dark .message {
  color: #ecf0f1;
}

.theme-ocean {
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
}

.theme-ocean .target-box {
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
}

.theme-ocean .current-box {
  background: linear-gradient(135deg, #ff6b6b 0%, #ff9e9b 100%);
}

.theme-ocean .btn-add {
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
}

.theme-ocean .btn-reset {
  background: linear-gradient(135deg, #ff6b6b 0%, #ff9e9b 100%);
}

.theme-forest {
  background: linear-gradient(135deg, #2d5016 0%, #556b2f 100%);
}

.theme-forest .target-box {
  background: linear-gradient(135deg, #2d5016 0%, #556b2f 100%);
}

.theme-forest .current-box {
  background: linear-gradient(135deg, #8bc34a 0%, #cddc39 100%);
}

.theme-forest .btn-add {
  background: linear-gradient(135deg, #2d5016 0%, #556b2f 100%);
}

.theme-forest .btn-reset {
  background: linear-gradient(135deg, #8bc34a 0%, #cddc39 100%);
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .confetti {
    animation: none !important;
    display: none !important;
  }
}

/* Animations */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes popIn {
  0% {
    transform: scale(0.3);
    opacity: 0;
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes celebrate {
  0% {
    transform: scale(1);
  }
  25% {
    transform: scale(1.05) rotate(2deg);
  }
  50% {
    transform: scale(1.1);
  }
  75% {
    transform: scale(1.05) rotate(-2deg);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-10px);
  }
  75% {
    transform: translateX(10px);
  }
}

@keyframes floatUp {
  0% {
    opacity: 1;
    transform: translateX(-50%) translateY(0) scale(1);
  }
  50% {
    opacity: 1;
    transform: translateX(-50%) translateY(-80px) scale(1.2);
  }
  100% {
    opacity: 0;
    transform: translateX(-50%) translateY(-160px) scale(0.8);
  }
}

@keyframes fadeInOverlay {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fall {
  to {
    transform: translateY(100vh) rotate(360deg);
  }
}