/* 粒子效果背景样式 - 已禁用以保持壁纸纯净 */
.particles-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
  background: transparent;
  /* 禁用粒子效果以避免对壁纸造成朦胧影响 */
  display: none !important;
  visibility: hidden !important;
}

.particle {
  position: absolute;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  pointer-events: none;
  animation: float 6s ease-in-out infinite;
  /* 增加透明度以在壁纸背景上更好地显示 */
}

.particle.smoke {
  background: rgba(255, 255, 255, 0.05);
  filter: blur(1px);
  animation: smoke-float 8s ease-in-out infinite;
}

.particle.dust {
  background: rgba(255, 255, 255, 0.08);
  animation: dust-float 10s ease-in-out infinite;
}

.particle.fog {
  background: rgba(255, 255, 255, 0.03);
  filter: blur(2px);
  animation: fog-float 12s ease-in-out infinite;
}

.particle.luminous {
  background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.05) 70%);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
  animation: luminous-float 7s ease-in-out infinite;
}

/* 粒子浮动动画 */
@keyframes float {
  0%, 100% {
    transform: translateY(0px) translateX(0px) rotate(0deg);
    opacity: 0.3;
  }
  25% {
    transform: translateY(-20px) translateX(10px) rotate(90deg);
    opacity: 0.6;
  }
  50% {
    transform: translateY(-40px) translateX(-5px) rotate(180deg);
    opacity: 0.8;
  }
  75% {
    transform: translateY(-20px) translateX(-15px) rotate(270deg);
    opacity: 0.6;
  }
}

@keyframes smoke-float {
  0%, 100% {
    transform: translateY(0px) translateX(0px) scale(1);
    opacity: 0.1;
  }
  33% {
    transform: translateY(-30px) translateX(20px) scale(1.2);
    opacity: 0.3;
  }
  66% {
    transform: translateY(-60px) translateX(-10px) scale(0.8);
    opacity: 0.2;
  }
}

@keyframes dust-float {
  0%, 100% {
    transform: translateY(0px) translateX(0px) rotate(0deg);
    opacity: 0.2;
  }
  20% {
    transform: translateY(-15px) translateX(15px) rotate(72deg);
    opacity: 0.4;
  }
  40% {
    transform: translateY(-30px) translateX(-8px) rotate(144deg);
    opacity: 0.6;
  }
  60% {
    transform: translateY(-45px) translateX(12px) rotate(216deg);
    opacity: 0.4;
  }
  80% {
    transform: translateY(-30px) translateX(-5px) rotate(288deg);
    opacity: 0.3;
  }
}

@keyframes fog-float {
  0%, 100% {
    transform: translateY(0px) translateX(0px) scale(1);
    opacity: 0.05;
  }
  25% {
    transform: translateY(-25px) translateX(18px) scale(1.3);
    opacity: 0.15;
  }
  50% {
    transform: translateY(-50px) translateX(-12px) scale(0.7);
    opacity: 0.1;
  }
  75% {
    transform: translateY(-25px) translateX(-20px) scale(1.1);
    opacity: 0.12;
  }
}

@keyframes luminous-float {
  0%, 100% {
    transform: translateY(0px) translateX(0px) scale(1);
    opacity: 0.4;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
  }
  33% {
    transform: translateY(-25px) translateX(15px) scale(1.1);
    opacity: 0.7;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
  }
  66% {
    transform: translateY(-50px) translateX(-8px) scale(0.9);
    opacity: 0.5;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.4);
  }
}

/* 欢迎页面内容样式 - 沉浸式无背景 */
.welcome-container {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  background: transparent; /* 移除半透明背景，实现沉浸式效果 */
  backdrop-filter: none; /* 移除毛玻璃效果 */
}

.welcome-content {
  max-width: 800px;
  margin: 0 auto;
}

.welcome-title {
  font-size: 3.5rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 1rem;
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  animation: title-glow 3s ease-in-out infinite alternate;
}

.welcome-subtitle {
  font-size: 1.3rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
  line-height: 1.6;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.welcome-description {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 3rem;
  line-height: 1.8;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.welcome-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.welcome-btn {
  padding: 15px 30px;
  font-size: 1.1rem;
  font-weight: 600;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  position: relative;
  overflow: hidden;
}

.welcome-btn.primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.welcome-btn.primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(102, 126, 234, 0.6);
}

.welcome-btn.secondary {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.welcome-btn.secondary:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
}

.welcome-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
  max-width: 1000px;
}

.feature-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(15px);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.feature-icon {
  font-size: 2.5rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 1rem;
}

.feature-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 0.5rem;
}

.feature-description {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

@keyframes title-glow {
  0% {
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  }
  100% {
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3), 0 0 20px rgba(255, 255, 255, 0.3);
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .welcome-title {
    font-size: 2.5rem;
  }
  
  .welcome-subtitle {
    font-size: 1.1rem;
  }
  
  .welcome-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .welcome-btn {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }
  
  .welcome-features {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}