.btn {
  padding: 14px 35px;
  border: none;
  border-radius: 15px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  display: inline-block;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  font-family: 'Orbitron', sans-serif;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, #00eaff, #ff00ff);
  color: #fff;
  font-weight: 900;
  box-shadow: 0 6px 30px rgba(0, 217, 255, 0.5);
  position: relative;
  z-index: 1;
}

.btn-primary:hover {
  box-shadow: 0 10px 45px rgba(0, 217, 255, 0.8), 0 0 30px rgba(255, 0, 255, 0.6);
  transform: translateY(-4px) scale(1.05);
}

.btn-login {
  background: linear-gradient(135deg, #00eaff, #0099ff);
  color: #fff;
  font-weight: 900;
  box-shadow: 0 6px 30px rgba(0, 234, 255, 0.7), 0 0 20px rgba(0, 153, 255, 0.5);
  border: 2px solid rgba(0, 234, 255, 0.5);
  position: relative;
  z-index: 1;
  animation: loginPulse 2s ease-in-out infinite;
}

@keyframes loginPulse {
  0%, 100% { box-shadow: 0 6px 30px rgba(0, 234, 255, 0.7), 0 0 20px rgba(0, 153, 255, 0.5); }
  50% { box-shadow: 0 8px 40px rgba(0, 234, 255, 0.9), 0 0 35px rgba(0, 153, 255, 0.7); }
}

.btn-login:hover {
  background: linear-gradient(135deg, #7d0dde, #00aaff);
  box-shadow: 0 12px 50px rgb(117, 3, 230), 0 0 50px rgba(0, 153, 255, 0.9);
  transform: translateY(-5px) scale(1.1);
  border-color: rgba(0, 255, 255, 0.8);
}

.btn-cta {
  padding: 18px 45px;
  font-size: 19px;
  border-radius: 15px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 3px;
  border: none;
  font-family: 'Orbitron', sans-serif;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-cta::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: rotate(45deg);
  animation: buttonShine 3s infinite;
}

@keyframes buttonShine {
  0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
  100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.btn-play {
  background: linear-gradient(135deg, #ff00ff, #ff0066);
  box-shadow: 0 6px 35px rgba(255, 0, 255, 0.6);
  color: #fff;
}

.btn-play:hover {
  transform: translateY(-5px) scale(1.08);
  box-shadow: 0 12px 50px rgba(255, 0, 255, 0.9), 0 0 40px rgba(255, 0, 102, 0.7);
}

.btn-leaderboard {
  background: linear-gradient(135deg, #ffd700, #ffaa00);
  color: #0c001a;
  box-shadow: 0 6px 35px rgba(255, 215, 0, 0.6);
}

.btn-leaderboard:hover {
  transform: translateY(-5px) scale(1.08);
  box-shadow: 0 12px 50px rgba(255, 215, 0, 0.9), 0 0 40px rgba(255, 170, 0, 0.7);
}

.btn-logout {
  background: linear-gradient(135deg, #ff0066, #cc0033) !important;
  color: #fff !important;
  font-weight: 900;
  box-shadow: 0 6px 30px rgba(255, 0, 102, 0.7), 0 0 20px rgba(204, 0, 51, 0.5);
  border: 2px solid rgba(255, 0, 102, 0.5);
  position: relative;
  z-index: 1;
  animation: logoutPulse 2s ease-in-out infinite;
}

@keyframes logoutPulse {
  0%, 100% { box-shadow: 0 6px 30px rgba(255, 0, 102, 0.7), 0 0 20px rgba(204, 0, 51, 0.5); }
  50% { box-shadow: 0 8px 40px rgba(255, 0, 102, 0.9), 0 0 35px rgba(204, 0, 51, 0.7); }
}

.btn-logout:hover {
  background: linear-gradient(135deg, #ff0088, #dd0044) !important;
  box-shadow: 0 12px 50px rgba(255, 0, 102, 1), 0 0 50px rgba(204, 0, 51, 0.9);
  transform: translateY(-5px) scale(1.1);
  border-color: rgba(255, 0, 102, 0.8);
}

.btn-logout-cancel, .btn-logout-confirm {
  padding: 14px 32px;
  border: none;
  border-radius: 12px;
  font-weight: 800;
  font-size: 15px;
  font-family: 'Orbitron', sans-serif;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-logout-cancel {
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.9);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-logout-cancel:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(255, 255, 255, 0.2);
}

.btn-logout-confirm {
  background: linear-gradient(135deg, #ff0066, #cc0033);
  color: #fff;
  border: 2px solid rgba(255, 0, 102, 0.6);
  box-shadow: 0 4px 20px rgba(255, 0, 102, 0.5);
}

.btn-logout-confirm:hover {
  background: linear-gradient(135deg, #ff0088, #dd0044);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 0, 102, 0.7);
  border-color: rgba(255, 0, 102, 0.9);
}