/* 完全重置所有元素的边距和填充 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* 基础样式设置 - 优化背景处理 */
html,
body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  position: fixed;
  font-family: Arial, sans-serif;
}

/* 将背景图直接应用于body */
body {
  background-image: url("../resource/images/bg_index.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: white;
  background-color: rgba(0, 0, 0, 0.8); /* 深色背景 */
}

/* 重新设计容器样式，确保无缝对齐 */
.container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
  width: 100vw;
  position: absolute;
  top: 0;
  left: 0;
  text-align: center;
}

/* header 样式 */
header {
  background-color: rgba(0, 0, 0, 0.6);
  padding: 25px 40px;
  border-radius: 12px;
  margin-bottom: 30px;
  animation: fadeIn 2s;
  max-width: 90%;
}

/* h1 样式 */
header h1 {
  font-size: 3em;
  margin-bottom: 15px;
  text-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
}

/* p 样式 */
header p {
  font-size: 1.5em;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

/* main 样式 */
main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* 按钮通用样式 - 深色模式 */
button {
  padding: 12px 25px;
  font-size: 1.2em;
  margin: 12px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  background-color: #1a1a1a;
  color: white;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

/* 开始比赛按钮样式 */
.start-btn {
  background-color: #2563eb;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

.start-btn:hover {
  background-color: #1d4ed8;
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4),
    0 0 5px rgba(59, 130, 246, 0.8);
}

/* 游戏按钮特殊样式 */
.game-btn {
  background-color: #7e22ce;
  box-shadow: 0 4px 12px rgba(126, 34, 206, 0.4);
}

.game-btn:hover {
  background-color: #6b21a8;
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(126, 34, 206, 0.4),
    0 0 5px rgba(147, 51, 234, 0.8);
}

/* 进入设置按钮样式 */
.settings-btn {
  background-color: #292524;
  border-color: #78716c;
}

.settings-btn:hover {
  background-color: #1c1917;
  transform: translateY(-8px);
  box-shadow: 0 8px 25px rgba(120, 113, 108, 0.4),
    0 0 5px rgba(120, 113, 108, 0.8);
}

/* 设置按钮样式 */
.setting-btn {
  display: block;
  width: 200px;
  height: 50px;
  margin: 20px auto;
  background-color: #292524;
  color: white;
  border: 1px solid #3b82f6; /* 修改为完整的边框定义，解决border:none冲突 */
  border-radius: 25px;
  font-size: 1.2em;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.setting-btn:hover {
  background-color: #1e40af;
  transform: translateY(-8px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4),
    0 0 5px rgba(59, 130, 246, 0.8);
}

/* footer 样式 */
footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  padding: 12px 0;
  z-index: 10;
}

footer p {
  margin: 0;
  font-size: 0.9em;
}

/* 淡入动画 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* 浮动动画 */
@keyframes bounce {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-6px);
  }
}

/* 媒体查询确保在小屏幕上正确显示 */
@media (max-width: 768px) {
  header h1 {
    font-size: 2.2em;
  }

  header p {
    font-size: 1.2em;
  }

  button {
    padding: 10px 20px;
    font-size: 1em;
    margin: 10px;
  }
}