:root {
  --bg: #f5f6f8;
  --card: #fff;
  --line: #e3e6ea;
  --text: #1d2129;
  --muted: #8a9099;
  --primary: #2563eb;
  --danger: #dc2626;
  --success: #16a34a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a; --card: #1c1f24; --line: #2b3038;
    --text: #e6e8eb; --muted: #8a9099;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; padding: 16px;
  font: 14px/1.55 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--text);
}
.hidden { display: none !important; }
.view { max-width: 1080px; margin: 0 auto; }
h1 { font-size: 20px; margin: 0 0 4px; }
h2 { font-size: 15px; margin: 0 0 10px; }
.muted { color: var(--muted); font-size: 12px; }
.tip { color: var(--muted); font-size: 12px; margin: 10px 0 0; }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; padding: 16px; margin-bottom: 14px;
}
.card-head { display: flex; justify-content: space-between; align-items: center; }

button {
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  border-radius: 7px; padding: 7px 13px; cursor: pointer; font-size: 13px;
}
button:hover:not(:disabled) { border-color: var(--primary); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
button.danger { color: var(--danger); border-color: #f0c0c0; }
button.small { padding: 4px 10px; font-size: 12px; }

input {
  border: 1px solid var(--line); border-radius: 7px; padding: 8px 10px;
  background: var(--bg); color: var(--text); font-size: 14px; width: 100%;
}
label { display: block; margin-bottom: 12px; font-size: 13px; color: var(--muted); }
label input { margin-top: 5px; }

/* 登录 */
.login-card { max-width: 380px; margin: 8vh auto; }
.login-card .sub { color: var(--muted); font-size: 13px; margin: 0 0 18px; }
.login-card button { width: 100%; }
.msg { white-space: pre-wrap; font-size: 13px; margin: 12px 0 0; font-family: inherit; }

/* 轮次 */
.turn-list { display: flex; flex-direction: column; gap: 8px; }
.turn-item { text-align: left; display: flex; flex-direction: column; gap: 3px; padding: 12px; }

/* 顶栏 */
.topbar { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 14px; }
.topbar-actions { display: flex; gap: 8px; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 760px) { .grid { grid-template-columns: 1fr; } }

.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 14px; }
.stats .k, .freq-row .k { color: var(--muted); font-size: 12px; margin-right: 8px; }
.stats .v { font-weight: 600; }
.freq-row { display: flex; align-items: center; gap: 8px; margin-top: 14px;
  padding-top: 12px; border-top: 1px solid var(--line); font-size: 12px; }
.freq-row input { width: 80px; }

/* 事件流 */
.events { max-height: 190px; overflow-y: auto; display: flex; flex-direction: column; gap: 6px; }
.event { font-size: 13px; padding: 6px 8px; border-radius: 6px; background: var(--bg); }
.event.success { border-left: 3px solid var(--success); }
.event.error { border-left: 3px solid var(--danger); }
.event.info { border-left: 3px solid var(--muted); }

/* 列表 */
.list { display: flex; flex-direction: column; gap: 6px; margin-top: 10px; }
.row { display: flex; align-items: center; gap: 10px; padding: 9px 10px;
  border: 1px solid var(--line); border-radius: 7px; }
.row-main { flex: 1; min-width: 0; }
.row-title { font-size: 13px; word-break: break-all; }
.row-sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.row-actions { display: flex; gap: 6px; flex-shrink: 0; }
.empty { color: var(--muted); font-size: 13px; padding: 10px 0; }
.head { font-size: 13px; color: var(--muted); margin-top: 12px; }
.pager { display: flex; align-items: center; gap: 8px; margin-top: 10px; }

/* Tab */
.tabs { display: flex; gap: 6px; margin-bottom: 12px; }
.tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.search-row { display: flex; gap: 8px; }
.search-row input { flex: 1; }

/* Toast */
.toast {
  position: fixed; left: 50%; top: 16px; transform: translateX(-50%);
  background: #222; color: #fff; padding: 10px 18px; border-radius: 8px;
  font-size: 13px; max-width: 90vw; z-index: 99;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .18);
  animation: toast-in .18s ease-out;
}
@keyframes toast-in {
  from { opacity: 0; transform: translateX(-50%) translateY(-8px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

/* 管理面板 */
.admin-row { align-items: flex-start; }
.row-actions.col { flex-direction: column; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 11px;
  word-break: break-all; }
.inline-check { display: inline-flex; align-items: center; gap: 5px; margin: 0;
  font-size: 12px; color: var(--muted); }
.inline-check input { width: auto; }
.freq-row select { width: auto; padding: 6px 8px; }
.tip.warn { color: var(--danger); }

/* 小项目（minorCourse）上标 */
sup.minor { font-weight: bold; color: #106ebe; font-size: 0.78em; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) sup.minor { color: #5aa9f0; }
}