:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --border: #e2e5ea;
  --text: #1f2328;
  --muted: #69707a;
  --accent: #3b6ef6;
  --accent-weak: #eef2fe;
  --danger: #d1373f;
  --ok: #1a7f37;
  --warn: #9a6700;
  --code-bg: #f2f3f5;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --panel: #161b22;
    --border: #2b323c;
    --text: #e6edf3;
    --muted: #8b949e;
    --accent: #6f96ff;
    --accent-weak: #1c2740;
    --danger: #f47067;
    --ok: #57ab5a;
    --warn: #c69026;
    --code-bg: #1c222b;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
}
#root { display: flex; min-height: 100vh; }

/* ---- 侧边栏 ---- */
.sidebar {
  width: 208px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  background: var(--panel);
  padding: 18px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.sidebar .brand {
  font-weight: 700;
  font-size: 16px;
  padding: 4px 10px 14px;
  letter-spacing: 0.2px;
}
.sidebar .brand span { color: var(--accent); }
.sidebar a {
  display: block;
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}
.sidebar a.active { background: var(--accent-weak); color: var(--accent); }
.sidebar a:hover:not(.active) { background: var(--bg); color: var(--text); }
.sidebar .spacer { flex: 1; }
.sidebar .foot { font-size: 12px; color: var(--muted); padding: 0 10px; }
.sidebar .foot button { margin-top: 6px; }

/* ---- 主区域 ---- */
.main { flex: 1; padding: 26px 32px 60px; max-width: 1060px; min-width: 0; }
.page-title { font-size: 20px; font-weight: 700; margin: 0 0 4px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.page-sub { color: var(--muted); margin: 0 0 20px; font-size: 13px; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 16px;
}
.card h3 { margin: 0 0 10px; font-size: 14px; }

/* ---- 表格 ---- */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; color: var(--muted); font-weight: 500; padding: 6px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:last-child td { border-bottom: none; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--bg); }

/* ---- 元件 ---- */
button, .btn {
  font: inherit;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}
button:hover { border-color: var(--muted); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { opacity: 0.9; }
button.danger { color: var(--danger); }
button.small { padding: 3px 10px; font-size: 12px; }
button:disabled { opacity: 0.5; cursor: default; }
input, select, textarea {
  font: inherit;
  font-size: 13px;
  padding: 7px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  width: 100%;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
label { display: block; font-size: 12px; color: var(--muted); margin: 10px 0 4px; }

.badge {
  display: inline-block;
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  white-space: nowrap;
}
.badge.ok { color: var(--ok); border-color: var(--ok); }
.badge.warn { color: var(--warn); border-color: var(--warn); }
.badge.danger { color: var(--danger); border-color: var(--danger); }
.badge.accent { color: var(--accent); border-color: var(--accent); }

code, .mono { font-family: ui-monospace, 'SF Mono', Menlo, monospace; font-size: 12px; }
code { background: var(--code-bg); padding: 1px 6px; border-radius: 5px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

/* ---- tabs ---- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; flex-wrap: wrap; }
.tabs button {
  border: none;
  background: none;
  border-radius: 8px 8px 0 0;
  padding: 8px 14px;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tabs button.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

/* ---- markdown 渲染 ---- */
.markdown { line-height: 1.7; }
.markdown h1 { font-size: 1.5em; } .markdown h2 { font-size: 1.25em; }
.markdown h1, .markdown h2 { border-bottom: 1px solid var(--border); padding-bottom: 6px; }
.markdown pre { background: var(--code-bg); padding: 12px 14px; border-radius: 8px; overflow-x: auto; font-size: 12.5px; }
.markdown pre code { background: none; padding: 0; }
.markdown table { width: auto; }
.markdown td, .markdown th { border: 1px solid var(--border); }
.markdown blockquote { border-left: 3px solid var(--border); margin-left: 0; padding-left: 14px; color: var(--muted); }
.markdown img { max-width: 100%; }

/* ---- 编辑器 ---- */
textarea.editor {
  min-height: 460px;
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 12.5px;
  line-height: 1.6;
  resize: vertical;
  background: var(--panel);
}

/* ---- 弹窗 ---- */
.overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
  padding: 20px;
}
.modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  width: 460px;
  max-width: 100%;
  max-height: 88vh;
  overflow-y: auto;
}
.modal h3 { margin: 0 0 6px; }
.modal .row { display: flex; gap: 10px; }
.modal .row > div { flex: 1; }
.modal .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }

.url-box {
  background: var(--code-bg);
  border-radius: 8px;
  padding: 10px 12px;
  font-family: ui-monospace, Menlo, monospace;
  font-size: 12px;
  word-break: break-all;
  margin: 10px 0;
}

/* ---- 登录 ---- */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; width: 100%; }
.login-box { width: 320px; }
.login-box h1 { font-size: 20px; text-align: center; }
.login-box h1 span { color: var(--accent); }

/* ---- toast ---- */
#toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--bg);
  padding: 8px 18px; border-radius: 10px; font-size: 13px;
  opacity: 0; transition: opacity 0.2s; pointer-events: none; z-index: 99;
}
#toast.show { opacity: 1; }

.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar .grow { flex: 1; }

@media (max-width: 720px) {
  #root { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: static; flex-direction: row; flex-wrap: wrap; align-items: center; }
  .sidebar .brand { padding-bottom: 4px; }
  .sidebar .spacer, .sidebar .foot { display: none; }
  .main { padding: 18px 14px 50px; }
}