/* base.css —— 基础重置与通用令牌，主题通过覆盖 CSS 变量定制外观 */
*,
*::before,
*::after { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

:root {
  --radius: 14px;
  --radius-sm: 9px;
  --radius-lg: 20px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono",
    Menlo, monospace, "Microsoft YaHei";
  --container: 1080px;
  --content: 940px;
  --tabbar-h: 52px;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  background: var(--bg-app);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
ul, ol { margin: 0; padding: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.3; }
p { margin: 0; }
input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }

::selection { background: var(--accent); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar, rgba(255,255,255,.12)); border-radius: 8px; border: 2px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-hover, rgba(255,255,255,.22)); background-clip: content-box; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  transition: background .18s, border-color .18s, transform .18s, color .18s;
}
.btn:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.btn--primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 8px 22px -10px var(--accent);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px 10px;
  border-radius: 7px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--tag-color, var(--accent));
  background: color-mix(in srgb, var(--tag-color, var(--accent)) 16%, transparent);
  border: 1px solid color-mix(in srgb, var(--tag-color, var(--accent)) 30%, transparent);
  transition: transform .16s, background .16s;
}
.tag:hover { transform: translateY(-1px); background: color-mix(in srgb, var(--tag-color, var(--accent)) 26%, transparent); }
.tag em { font-style: normal; opacity: .7; font-size: 11.5px; }

.empty {
  padding: 46px 20px;
  text-align: center;
  color: var(--text-dim);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: var(--bg-panel);
}

/* 列表为空时，空状态撑满列表预留的最小高度 */
.post-list > .empty { flex: 1 1 auto; display: flex; align-items: center; justify-content: center; }

/* 分页 */
.pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin: 34px 0 10px; flex-wrap: wrap; }
.pagination__num, .pagination__step {
  display: inline-flex; align-items: center; gap: 4px;
  min-width: 36px; height: 36px; padding: 0 12px;
  justify-content: center;
  border-radius: 10px; border: 1px solid var(--border);
  background: var(--bg-panel); color: var(--text-muted);
  font-size: 13.5px; font-weight: 600;
  transition: all .16s;
}
.pagination__num:hover, .pagination__step:hover { color: var(--text); border-color: var(--border-strong); }
.pagination__num.is-active {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #fff; border-color: transparent;
}
.pagination__ellipsis { display: inline-flex; align-items: center; justify-content: center; min-width: 24px; height: 36px; color: var(--text-dim); font-size: 13.5px; user-select: none; }