/* ============================================================
 * style.css — Liquid Glass Blog 前台主题（叠加 liquid-glass.css）
 * 白色简约 / 自然不夸张；响应式
 * ============================================================ */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--lg-text);
  -webkit-font-smoothing: antialiased;
  background: var(--lg-bg-fallback);
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ---------- 布局 ---------- */
.container { max-width: 960px; margin: 0 auto; padding: 0 20px; }
.container.narrow { max-width: 760px; }

/* ---------- 顶部导航 ---------- */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
}
.brand { font-size: 19px; font-weight: 700; letter-spacing: .5px; display: flex; align-items: center; gap: 8px; }
.brand img { height: 28px; width: 28px; border-radius: 8px; object-fit: cover; }
.nav-links { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
.nav-links a {
  padding: 7px 14px; border-radius: 999px; font-size: 14px; color: var(--lg-text-soft);
  transition: all .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--lg-accent); background: rgba(91,124,250,.12); }
.nav-toggle { display: none; }

/* ---------- 页头 ---------- */
.page-head { padding: 40px 0 10px; }
.page-head h1 { margin: 0 0 6px; font-size: 30px; }
.page-head .sub { color: var(--lg-text-soft); font-size: 14px; }

/* ---------- 文章卡片流 ---------- */
.post-grid { display: grid; gap: 20px; margin: 24px 0; }
.post-card { overflow: hidden; display: flex; flex-direction: column; transition: transform .2s, box-shadow .2s; }
.post-card:hover { transform: translateY(-3px); }
.post-card .cover {
  width: 100%; height: 190px; object-fit: cover; border-radius: var(--lg-radius-sm);
  margin-bottom: 14px; background: rgba(120,130,180,.12);
}
.post-card .cover.placeholder {
  display: flex; align-items: center; justify-content: center;
  color: var(--lg-text-soft); font-size: 13px;
}
.post-card h2 { margin: 0 0 8px; font-size: 20px; line-height: 1.4; }
.post-card h2 a:hover { color: var(--lg-accent); }
.post-card .excerpt { color: var(--lg-text-soft); font-size: 14px; line-height: 1.7; margin: 0 0 14px; }
.post-meta { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; font-size: 12.5px; color: var(--lg-text-soft); margin-top: auto; }
.post-meta .author { display: inline-flex; align-items: center; gap: 6px; }
.post-meta .avatar {
  width: 22px; height: 22px; border-radius: 50%; object-fit: cover;
  background: rgba(91,124,250,.2);
}

/* ---------- 文章详情 ---------- */
.post-detail { padding: 30px 0 60px; }
.post-detail .cover { width: 100%; max-height: 420px; object-fit: cover; border-radius: var(--lg-radius); margin: 18px 0; }
.post-detail h1.title { font-size: 32px; line-height: 1.35; margin: 10px 0 14px; }
.post-tags { display: flex; gap: 8px; flex-wrap: wrap; margin: 14px 0; }
.author-box { display: flex; gap: 14px; align-items: center; padding: 16px; margin: 24px 0; }
.author-box .avatar { width: 56px; height: 56px; border-radius: 50%; object-fit: cover; }
.author-box .name { font-weight: 700; }
.author-box .bio { font-size: 13px; color: var(--lg-text-soft); margin-top: 3px; }

/* ---------- 评论区 ---------- */
.comment-list { list-style: none; padding: 0; margin: 0; }
.comment-item { padding: 14px 0; border-bottom: 1px solid rgba(120,130,180,.15); }
.comment-item .c-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.comment-item .c-head .name { font-weight: 600; font-size: 14px; }
.comment-item .c-head .time { font-size: 12px; color: var(--lg-text-soft); }
.comment-item .c-body { font-size: 14.5px; line-height: 1.7; }
.comment-item .c-actions { margin-top: 6px; display: flex; gap: 14px; }
.comment-item .c-actions button {
  background: none; border: none; cursor: pointer; font-size: 12.5px;
  color: var(--lg-text-soft); padding: 0;
}
.comment-item .c-actions button:hover { color: var(--lg-accent); }
.comment-children { margin-left: 22px; border-left: 2px solid rgba(91,124,250,.2); padding-left: 16px; }
.reply-form { margin-top: 10px; }

/* ---------- 归档列表 ---------- */
.archive-list { list-style: none; padding: 0; margin: 16px 0; }
.archive-list li { display: flex; justify-content: space-between; padding: 12px 4px; border-bottom: 1px solid rgba(120,130,180,.12); font-size: 15px; }
.archive-list .count { color: var(--lg-text-soft); font-size: 13px; }
.month-group { margin-bottom: 8px; }
.month-group h3 { font-size: 16px; margin: 18px 0 8px; }

/* ---------- 标签云 ---------- */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0; }

/* ---------- 状态 / 空 / 加载 ---------- */
.empty { text-align: center; padding: 50px 20px; color: var(--lg-text-soft); }
.loading { text-align: center; padding: 40px; color: var(--lg-text-soft); }
.skeleton { border-radius: var(--lg-radius); background: rgba(120,130,180,.12); animation: pulse 1.4s infinite; }
@keyframes pulse { 0%,100%{opacity:.5} 50%{opacity:.9} }

.toast {
  position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%);
  padding: 11px 22px; border-radius: 999px; font-size: 14px; z-index: 300;
  opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(-6px); }

/* ---------- 公告横幅 ---------- */
.announcement-bar {
  position: sticky; top: 0; z-index: 40;
  margin: 0; padding: 10px 20px;
  background: linear-gradient(135deg, rgba(91,124,250,.15), rgba(139,92,246,.15));
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(91,124,250,.2);
  font-size: 14px; text-align: center; color: var(--lg-text);
}

/* ---------- 登录/注册页 ---------- */
.auth-wrap { max-width: 400px; margin: 60px auto; padding: 0 20px; }
.auth-wrap .glass-pane { padding: 32px 28px; }
.auth-wrap h1 { margin: 0 0 4px; font-size: 24px; }
.auth-wrap .sub { color: var(--lg-text-soft); font-size: 14px; margin: 0 0 20px; }
.auth-links { text-align: center; margin-top: 16px; font-size: 14px; color: var(--lg-text-soft); }
.auth-links a { color: var(--lg-accent); }

/* ---------- 页脚 ---------- */
.site-footer { text-align: center; padding: 30px 20px 50px; color: var(--lg-text-soft); font-size: 13px; }

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  body { padding-top: env(safe-area-inset-top); }
  .site-nav { padding: 10px 16px; flex-wrap: wrap; }
  .brand { font-size: 17px; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    padding: 12px 16px; gap: 4px;
    background: rgba(255,255,255,.7); backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(120,130,180,.15);
  }
  .nav-links.open { display: flex; }
  .nav-links a { text-align: center; padding: 10px; }
  .page-head { padding: 24px 0 6px; }
  .page-head h1 { font-size: 24px; }
  .post-detail h1.title { font-size: 24px; }
  .container { padding: 0 14px; }
  .post-card { padding: 16px; }
  .post-card h2 { font-size: 18px; }
}