/* css/style.css */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft Yahei", sans-serif;
  background-color: #f5f5f5;
  color: #333;
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: #1e80ff;
}

.container {
  max-width: 1031px;
  margin: 0 auto;
  padding: 16px;
}

/* 顶部标题栏 */
.header {
  padding: 12px 0 16px;
}

.header-title {
  font-size: 44px;
  font-weight: 600;
  color: blanchedalmond;
}

/* 卡片风格块 */
.card {
  background-color: rgba(0,0,0,.1);
  border-radius: 8px;
  padding: 16px 20px;
  box-shadow: 0 2px 20px #1e80ff;
}

/* 目录页 */
.chapter-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* 三列等宽 */
  gap: 8px 16px;                         /* 行间距 / 列间距，可调 */
  margin-top: 8px;
}


.chapter-item {
  display: block;
  padding: 10px 12px;
  border-radius: 6px;
  background-color: rgba(0,0,0,.1);
  border: 1px solid #eee;
  font-size: 15px;
  color: #e2efb4;
}

.chapter-item:hover {
  background-color: #f0f7ff;
  border-color: #c9e2ff;
}

/* 阅读页 */
.chapter-page-title {
  font-size: 25px;
  font-weight: 600;
  margin-bottom: 12px;
  text-align: center;
  color: #a9eef2;
}

.chapter-meta {
  font-size: 12px b;
  color: #999;
  text-align: center;
  margin-bottom: 16px;
}

.chapter-content {
  font-size: 16px;
  text-align: justify;
  color: #9fa293;
}

/* 段落间距（如果直接用 <p>，可以加这个） */
.chapter-content p {
  margin-bottom: 1em;
}

/* 按钮区域 */
.nav-buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin: 16px 0;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  min-width: 80px;
  text-align: center;
  padding: 6px 12px;
  border-radius: 4px;
  border: 1px solid #1e80ff;
  color: #1efff7;
  font-size: 14px;
  background-color: #293331;
  cursor: pointer;
}

.btn-primary {
  background-color: #1e80ff;
  color: #fff;
}

.btn:hover:not(.btn-disabled) {
  opacity: 0.9;
}

.btn-disabled {
  border-color: #ccc;
  color: #aaa;
  cursor: default;
  background-color: #f5f5f5;
}

/* 底部空白，方便手机浏览 */
.footer-space {
  height: 40px;
}

/* 响应式：小屏幕优化 */
@media (max-width: 600px) {
  .container {
    padding: 10px;
  }

  .card {
    padding: 14px 12px;
  }

  .chapter-page-title {
    font-size: 18px;
  }

  .chapter-content {
    font-size: 15px;
  }

  .btn {
    flex: 1;
  }
}