:root {
  --paper: #f7f4ee;
  --card: #fffdf8;
  --ink: #2b2a28;
  --muted: #8a8378;
  --navy: #1f3a5f;
  --vermilion: #b23a3a;
  --line: #e5dfd3;
  --accent: #1f3a5f;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", system-ui, sans-serif;
  line-height: 1.7;
}

.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- 页头 ---------- */
.site-header {
  background: linear-gradient(180deg, var(--navy), #2c4f7a);
  color: #fff;
  padding: 34px 0 30px;
}
.site-header.slim { padding: 14px 0; }
.brand h1 {
  margin: 0;
  font-family: "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
  font-size: 30px;
  letter-spacing: 2px;
  font-weight: 700;
}
.brand .sub { margin: 6px 0 0; color: rgba(255,255,255,.78); font-size: 14px; }
.site-header .back, .site-header .back:hover { color: #fff; font-size: 15px; }

/* ---------- 筛选栏 ---------- */
.filter-bar {
  margin: 22px 0 18px;
  padding: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.filter-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.filter-row + .filter-row { margin-top: 10px; }
.filter-bar label { color: var(--muted); font-size: 14px; }
.filter-bar input[type="date"], .filter-bar input[type="search"] {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font: inherit;
  font-size: 14px;
  background: #fff;
  color: var(--ink);
}
.filter-bar input[type="search"] { flex: 1; min-width: 200px; }
.sep { color: var(--muted); }
.quick button {
  padding: 6px 12px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  color: var(--ink);
}
.quick button.active { background: var(--navy); border-color: var(--navy); color: #fff; }

/* ---------- 文章列表 ---------- */
.article-list { display: flex; flex-direction: column; gap: 14px; }
.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 20px;
  transition: box-shadow .15s ease, transform .15s ease;
  color: inherit;
}
.card:hover {
  text-decoration: none;
  box-shadow: 0 4px 18px rgba(31, 58, 95, .10);
  transform: translateY(-1px);
}
.card h2 { margin: 0 0 6px; font-size: 20px; font-family: "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif; }
.card .meta { color: var(--muted); font-size: 13px; }
.card .summary { margin: 8px 0 0; color: #55524b; font-size: 14px; }
.card.has-cover { display: flex; gap: 16px; align-items: center; }
.card .cover { width: 120px; height: 84px; object-fit: cover; border-radius: 6px; flex-shrink: 0; }
.hint { color: var(--muted); text-align: center; padding: 30px 0; }
.empty { text-align: center; color: var(--muted); padding: 40px 0; }

/* ---------- 文章页 ---------- */
.article-page { padding-top: 30px; padding-bottom: 60px; }
.article-page h1.title {
  font-family: "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
  font-size: 30px;
  margin: 0 0 8px;
}
.article-page .meta { color: var(--muted); font-size: 13px; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.article-body { font-size: 16.5px; }
.article-body img { max-width: 100%; height: auto; border-radius: 6px; }
.article-body video, .article-body audio { max-width: 100%; }
.article-body blockquote {
  margin: 1em 0;
  padding: 2px 16px;
  border-left: 3px solid var(--vermilion);
  background: rgba(178, 58, 58, .05);
  color: #6b6257;
}
.article-body a { color: var(--vermilion); }

/* ---------- 登录页 ---------- */
.login-page { display: flex; justify-content: center; padding-top: 60px; }
.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 32px;
  text-align: center;
}
.login-card h1 { margin: 0 0 8px; font-family: "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif; }
.muted { color: var(--muted); font-size: 14px; }
.drop-zone {
  display: block;
  margin: 20px 0;
  padding: 34px 16px;
  border: 2px dashed var(--line);
  border-radius: 8px;
  cursor: pointer;
  color: var(--muted);
  transition: border-color .15s ease, background .15s ease;
}
.drop-zone:hover, .drop-zone.dragover { border-color: var(--navy); background: rgba(31,58,95,.04); }
.drop-zone.has-file { border-color: var(--navy); color: var(--navy); }
.msg { margin: 10px 0; font-size: 14px; }
.msg.error { color: var(--vermilion); }
.msg.ok { color: #2a7a3b; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 9px 18px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 14px;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--navy); border-color: var(--navy); color: #fff; }
.btn.primary:hover { background: #2c4f7a; }
.btn.ghost { background: transparent; }
.btn.ghost:hover { border-color: var(--navy); color: var(--navy); }

/* ---------- 后台 ---------- */
.admin-top { display: flex; justify-content: space-between; align-items: center; }
.admin-top h1 { margin: 0; font-size: 20px; }
.admin-actions { display: flex; align-items: center; gap: 14px; }
.admin-actions a { color: #fff; font-size: 14px; }
.admin-main { padding-top: 20px; padding-bottom: 60px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 20px; }
.tabs button {
  padding: 10px 18px;
  border: none;
  background: none;
  cursor: pointer;
  font: inherit;
  font-size: 15px;
  color: var(--muted);
  border-bottom: 2px solid transparent;
}
.tabs button.active { color: var(--navy); border-bottom-color: var(--navy); font-weight: 600; }

.tab-panel { display: none; }
.tab-panel.active { display: block; }
.panel-head { display: flex; justify-content: flex-end; margin-bottom: 14px; }

.admin-list { display: flex; flex-direction: column; gap: 10px; }
.admin-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 16px;
}
.admin-item .info { flex: 1; min-width: 0; }
.admin-item .title { font-size: 15px; }
.admin-item .title a { color: var(--ink); }
.admin-item .meta { color: var(--muted); font-size: 12px; }
.admin-item .ops { display: flex; gap: 8px; }
.admin-item .ops button {
  padding: 5px 10px;
  font-size: 13px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 5px;
  cursor: pointer;
  color: var(--ink);
}
.admin-item .ops button.danger { color: var(--vermilion); border-color: #e8c9c9; }
.admin-item .ops button.danger:hover { background: var(--vermilion); color: #fff; border-color: var(--vermilion); }

/* ---------- 编辑器 ---------- */
.editor-form { display: flex; flex-direction: column; gap: 12px; }
.input {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font: inherit;
  font-size: 14px;
  background: #fff;
  color: var(--ink);
  width: 100%;
}
.input.title-input { font-size: 17px; font-weight: 600; }

.editor-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
}
.editor-toolbar button {
  padding: 5px 10px;
  border: 1px solid transparent;
  background: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 13px;
  color: var(--ink);
}
.editor-toolbar button:hover { background: #f0ede6; border-color: var(--line); }
.editor-toolbar .sep { width: 1px; height: 20px; background: var(--line); margin: 0 4px; align-self: center; }

.editor {
  min-height: 340px;
  padding: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0 0 8px 8px;
  font-size: 16px;
  outline: none;
  overflow-y: auto;
}
.editor:empty::before { content: attr(data-placeholder); color: #c0bab0; }
.editor img { max-width: 100%; height: auto; }
.editor video, .editor audio { max-width: 100%; }
.editor blockquote { border-left: 3px solid var(--vermilion); margin: .6em 0; padding: 2px 14px; background: rgba(178,58,58,.05); }

.editor-actions { display: flex; gap: 10px; }

/* ---------- 日志 ---------- */
.logs { display: flex; flex-direction: column; gap: 8px; }
.log-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 14px;
  font-size: 13px;
}
.log-item .t { color: var(--muted); margin-right: 10px; }
.log-item .action { font-weight: 600; color: var(--navy); margin-right: 10px; }
.log-item .detail { color: #6b6257; word-break: break-all; }

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 50px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

@media (max-width: 600px) {
  .brand h1 { font-size: 24px; }
  .article-page h1.title { font-size: 24px; }
  .card.has-cover { flex-direction: column; align-items: flex-start; }
  .card .cover { width: 100%; height: auto; }
}