/* ============================================================
   内页专属.css —— 古早内页（三栏布局）专属样式
   ============================================================ */

.retro-body {
  background-color: #e8dfc4;
  background-image: url("../images/old-web/bg-texture.svg");
  color: #222;
  font-family: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
  line-height: 1.6;
}

/* ---------- 顶部横幅 ---------- */
.retro-header {
  background: linear-gradient(#0e3a63, #082a4d);
  border-bottom: 4px solid #c9a227;
  text-align: center;
  padding: 16px 12px 12px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
}

.site-title {
  color: #f7e6b5;
  font-size: 30px;
  letter-spacing: 6px;
  text-shadow: 2px 2px 0 #000, 4px 4px 0 rgba(0, 0, 0, 0.4);
}

.site-tagline {
  color: #9fc3dd;
  font-size: 13px;
  margin-top: 6px;
  letter-spacing: 2px;
}

/* ---------- 跑马灯（复古元素） ---------- */
.retro-marquee {
  background: #000;
  color: #39ff14;
  font-family: "Courier New", monospace;
  font-size: 13px;
  border-top: 1px solid #333;
  border-bottom: 1px solid #333;
  overflow: hidden;
}

/* ---------- 三栏主体布局 ---------- */
.retro-main {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  justify-content: center;
  max-width: 1024px;
  margin: 12px auto;
  padding: 0 10px;
}

.retro-left   { width: 190px; flex: 0 0 190px; }
.retro-center { flex: 1 1 auto; min-width: 0; }
.retro-right  { width: 170px; flex: 0 0 170px; }

/* ---------- 复古面板 ---------- */
.panel {
  background: #f6f0dc;
  border: 2px outset #d8cda6;
  border-top-color: #fff;
  border-left-color: #fff;
  margin-bottom: 12px;
  padding: 10px 12px;
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.12);
}

.panel-title {
  background: #0b2e4f;
  color: #f7e6b5;
  font-size: 14px;
  letter-spacing: 2px;
  padding: 4px 8px;
  margin: -10px -12px 10px;
  border-bottom: 2px solid #c9a227;
  text-align: center;
}

.panel p { margin: 6px 0; }
.panel a { color: #0000cc; text-decoration: underline; }
.panel a:hover { background: #ffff66; color: #c00; }

/* ---------- 导航菜单 ---------- */
.nav-list { list-style: none; }
.nav-list li { margin: 3px 0; }
.nav-list a {
  display: block;
  padding: 3px 6px;
  color: #0000aa;
  text-decoration: none;
  border: 1px solid transparent;
}
.nav-list a:hover {
  background: #ffff66;
  color: #c00;
  border: 1px solid #c00;
}

/* ---------- 中栏正文 ---------- */
.retro-center .panel h2 {
  font-size: 20px;
  color: #7a1f1f;
  letter-spacing: 3px;
  text-align: center;
  margin-bottom: 8px;
}

.retro-divider { margin: 14px auto; }

/* ---------- 图片区域 ---------- */
.gallery {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.gallery figure { margin: 0; text-align: center; }

.img-frame {
  display: inline-block;
  background: #fff;
  border: 5px ridge #a39268;
  padding: 6px;
}

.img-frame img {
  width: 300px;
  height: 210px;
  object-fit: cover;
}

figcaption {
  font-size: 12px;
  color: #5a5340;
  margin-top: 6px;
}

/* ---------- 右栏小工具 ---------- */
.retro-clock {
  background: #000;
  color: #39ff14;
  font-family: "Courier New", monospace;
  font-size: 20px;
  letter-spacing: 2px;
  text-align: center;
  padding: 8px 4px;
  border: 3px inset #777;
}

.panel img { margin: 6px auto; }

.tiny {
  font-size: 11px;
  color: #555;
  text-align: center;
  margin-top: 4px;
}

/* ---------- 留言板 ---------- */
.guestbook-list {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  max-height: 340px;
  overflow-y: auto;
  border: 1px solid #d8cda6;
  background: #efe8d0;
  padding: 6px;
}

.guestbook-item {
  background: #fffdf2;
  border: 1px solid #d8cda6;
  border-left: 4px solid #7a1f1f;
  padding: 6px 8px;
  margin-bottom: 8px;
  box-shadow: 1px 1px 0 rgba(0, 0, 0, 0.1);
}
.guestbook-item:last-child { margin-bottom: 0; }

.guestbook-item-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px dashed #c9b78a;
  padding-bottom: 2px;
  margin-bottom: 4px;
}

.guestbook-nick {
  color: #0000aa;
  font-weight: bold;
  font-size: 13px;
}

.guestbook-time {
  color: #777;
  font-size: 11px;
  font-family: "Courier New", monospace;
}

.guestbook-item-body {
  font-size: 13px;
  color: #222;
  white-space: pre-wrap;
  word-break: break-word;
}

.guestbook-empty {
  text-align: center;
  color: #888;
  font-size: 13px;
  padding: 12px 0;
}

.guestbook-status {
  font-size: 12px;
  color: #7a1f1f;
  margin-left: 8px;
}

/* ---------- 留言板：关键词搜索 ---------- */
.guestbook-search {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 10px;
  padding: 6px 8px;
  background: #efe8d0;
  border: 1px solid #d8cda6;
  border-left: 4px solid #7a1f1f;
  box-shadow: 1px 1px 0 rgba(0, 0, 0, 0.1);
}

.guestbook-search label {
  font-size: 13px;
  font-weight: bold;
  color: #5a5340;
}

.guestbook-search input[type="text"] {
  flex: 1 1 180px;
  min-width: 120px;
  font-family: inherit;
  font-size: 13px;
  color: #222;
  background: #fffdf2;
  border: 2px inset #a39268;
  padding: 4px 6px;
}
.guestbook-search input[type="text"]::placeholder {
  color: #9a8f74;
}
.guestbook-search input[type="text"]:focus {
  outline: 1px dotted #7a1f1f;
  outline-offset: 1px;
}

/* 清空按钮：沿用 .guestbook-btn 复古外观；hidden 必须显式 display:none，
   否则与其他规则叠加时可能被覆盖 */
.guestbook-search-clear {
  font-size: 12px;
  padding: 4px 10px;
}
.guestbook-search-clear[hidden] { display: none; }

.guestbook-search-tip {
  flex: 1 1 100%;
  font-size: 12px;
  color: #7a1f1f;
}

/* ---------- 留言板：图片上传 ---------- */
.guestbook-file {
  display: block;
  font-size: 12px;
  color: #5a5340;
  margin: 4px 0;
}
.guestbook-file input[type="file"] {
  font-size: 12px;
  font-family: inherit;
  margin-left: 4px;
}

/* ---------- 留言板：留言内图片（点击放大） ---------- */
.guestbook-img {
  display: block;
  max-width: 180px;
  max-height: 180px;
  margin: 6px 0;
  border: 3px ridge #a39268;
  background: #fff;
  padding: 3px;
  cursor: zoom-in;
}

/* ---------- 留言板：操作栏与复古按钮 ---------- */
.guestbook-meta {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.guestbook-btn {
  font-family: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
  font-size: 12px;
  color: #222;
  background: #d8d0b6;
  border: 2px outset #b8ae8c;
  border-top-color: #f2ecd8;
  border-left-color: #f2ecd8;
  padding: 2px 10px;
  cursor: pointer;
  box-shadow: 1px 1px 0 rgba(0, 0, 0, 0.2);
}
.guestbook-btn:hover {
  background: #ffff66;
  color: #c00;
}
.guestbook-btn:active {
  border-style: inset;
  background: #c8bf9f;
}

.guestbook-like.on {
  color: #c00;
  border-color: #a39268;
  background: #f6d9d0;
}

.guestbook-like-count {
  font-family: "Courier New", monospace;
}

/* ---------- 留言板：回复列表 ---------- */
.guestbook-replies {
  margin-top: 8px;
  padding-left: 14px;
  border-left: 2px dashed #c9b78a;
}

.guestbook-reply-item {
  background: #f3ecd4;
  border: 1px solid #ddd0a8;
  padding: 4px 8px;
  margin: 6px 0;
}

.guestbook-reply-nick {
  color: #0000aa;
  font-weight: bold;
  font-size: 12px;
}
.guestbook-reply-time {
  float: right;
  color: #777;
  font-size: 11px;
  font-family: "Courier New", monospace;
}
.guestbook-reply-body {
  font-size: 13px;
  color: #333;
  margin-top: 2px;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ---------- 留言板：回复输入框 ---------- */
.guestbook-reply-form {
  margin-top: 8px;
  border: 1px dashed #a39268;
  background: #f0e9d2;
  padding: 6px;
}
.guestbook-reply-form input,
.guestbook-reply-form textarea {
  font-family: inherit;
  font-size: 12px;
  background: #fffdf2;
  border: 2px inset #b8ae8c;
  padding: 3px;
  width: 100%;
  margin-bottom: 6px;
  box-sizing: border-box;
}

/* ---------- 留言板：图片放大（lightbox） ---------- */
.guestbook-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  cursor: zoom-out;
}
/* 关键：display:flex 会覆盖 hidden 属性，必须显式隐藏 */
.guestbook-lightbox[hidden] {
  display: none;
}
.guestbook-lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  border: 6px ridge #a39268;
  background: #fff;
}

/* ---------- 页脚 ---------- */
.retro-footer {
  background: #0b2e4f;
  color: #c8d8e8;
  text-align: center;
  font-size: 12px;
  padding: 10px;
  border-top: 4px solid #c9a227;
}

.retro-footer a { color: #9fc3dd; }

/* ============================================================
   响应式适配 —— 让内页在手机 / 平板 / 电脑上都能良好显示
   仅调整布局与尺寸，不改变任何功能与内容
   ============================================================ */

/* 防止 iOS 在聚焦输入框时自动放大页面（需搭配已有的 viewport meta） */
html {
  -webkit-text-size-adjust: 100%;
}

/* ---------- 平板（≤960px）：两侧栏略收窄，主体更舒展 ---------- */
@media (max-width: 960px) {
  .retro-left  { width: 160px; flex-basis: 160px; }
  .retro-right { width: 150px; flex-basis: 150px; }

  .site-title   { font-size: 26px; letter-spacing: 4px; }
  .site-tagline { font-size: 12px; letter-spacing: 1px; }
}

/* ---------- 手机 / 窄屏（≤720px）：三栏 → 上下单栏 ---------- */
@media (max-width: 720px) {
  .retro-main {
    flex-direction: column;   /* 左中右三栏改为上下堆叠 */
    gap: 0;
    padding: 0 8px;
  }

  .retro-left,
  .retro-center,
  .retro-right {
    width: 100%;
    max-width: 100%;
    flex: 0 0 auto;
  }

  /* 顶部横幅 */
  .site-title   { font-size: 24px; letter-spacing: 3px; }
  .site-tagline { font-size: 12px; letter-spacing: 1px; }

  /* 导航菜单：竖向列表改为横向小标签，减少纵向滚动 */
  .nav-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
  }
  .nav-list li { margin: 0; }
  .nav-list a {
    font-size: 13px;
    padding: 8px 12px;
    border: 1px solid #d8cda6;
    background: #efe8d0;
    border-radius: 3px;
  }

  /* 中栏标题 */
  .retro-center .panel h2 { font-size: 18px; letter-spacing: 2px; }

  /* 图片展示：保持原比例等比缩放，不超出屏宽 */
  .gallery figure { width: 100%; }
  .img-frame {
    display: block;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
  }
  .img-frame img {
    width: 100%;
    height: auto;
    aspect-ratio: 300 / 210;   /* 与桌面端一致的 300:210 比例 */
    object-fit: cover;
  }

  /* 留言板内图片可放大些，但仍不超出屏幕 */
  .guestbook-img { max-width: 100%; }

  /* 右栏时钟 */
  .retro-clock { font-size: 18px; }

  /* ---- 留言板：触控优化 ---- */
  /* 输入框：占满宽度 + 更大内边距；16px 防止 iOS 聚焦时自动放大 */
  #guestbookForm input[type="text"],
  #guestbookForm textarea,
  .guestbook-reply-form input,
  .guestbook-reply-form textarea {
    width: 100%;
    box-sizing: border-box;
    font-size: 16px;
    padding: 10px;
    min-height: 44px;          /* 足够大的触控区域 */
  }
  #guestbookForm textarea { min-height: 96px; resize: vertical; }

  /* 提交 / 清空 / 点赞 / 回复等按钮：更大点击区域 */
  #guestbookForm button,
  .guestbook-btn {
    font-size: 14px;
    padding: 10px 18px;
    min-height: 44px;
  }

  /* 图片上传选择按钮也可点 */
  .guestbook-file { font-size: 13px; }
  .guestbook-file input[type="file"] { font-size: 14px; }

  /* 搜索框：输入框独占一行、16px 防 iOS 聚焦自动缩放、足够大点击区域 */
  .guestbook-search { padding: 8px; gap: 8px; }
  .guestbook-search input[type="text"] {
    flex: 1 1 100%;
    font-size: 16px;
    padding: 10px;
    min-height: 44px;
  }
  .guestbook-search-clear { min-height: 44px; }

  /* 留言条目：头部与操作栏可换行，避免按钮被挤压 */
  .guestbook-item-head { flex-wrap: wrap; gap: 2px; }
  .guestbook-meta { flex-wrap: wrap; }

  /* 跑马灯 / 页脚 */
  .retro-marquee { font-size: 12px; }
  .retro-footer  { font-size: 11px; }
}

/* ---------- 小屏手机（≤400px）：进一步收紧 ---------- */
@media (max-width: 400px) {
  .site-title { font-size: 21px; letter-spacing: 2px; }
  .retro-center .panel h2 { font-size: 17px; }
  .panel-title { font-size: 13px; }
  .guestbook-btn { padding: 10px 12px; }
}