/* 智能课堂签到 · 管理平台 —— 无外部依赖，自适应深浅色 */

:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2329;
  --muted: #8a9099;
  --line: #e5e7eb;
  --brand: #2b7fff;
  --brand-dark: #1a6ae8;
  --ok: #17b26a;
  --warn: #f79009;
  --err: #f04438;
  --info: #667085;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(16, 24, 40, .06), 0 1px 2px rgba(16, 24, 40, .04);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a; --card: #1c1f24; --text: #e6e8eb; --muted: #8b9199;
    --line: #2b2f36; --info: #98a2b3;
    --shadow: 0 1px 3px rgba(0,0,0,.35);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.6;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-text-size-adjust: 100%;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
h1, h2 { margin: 0; font-weight: 600; }
h1 { font-size: 16px; }
h2 { font-size: 15px; }
code { background: rgba(127,127,127,.14); padding: 1px 5px; border-radius: 4px; font-size: 12.5px; }
.req { color: var(--err); }

/* ---------- 卡片 / 通用 ---------- */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 16px; margin: 0 0 14px;
}
.btn {
  font: inherit; border-radius: 8px; padding: 7px 14px; cursor: pointer;
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  transition: .15s; white-space: nowrap;
}
.btn:hover { border-color: var(--muted); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.primary:hover { background: var(--brand-dark); border-color: var(--brand-dark); }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--err); border-color: rgba(240,68,56,.35); }
.btn.danger:hover { background: rgba(240,68,56,.08); border-color: var(--err); }
.btn.block { width: 100%; padding: 10px; }
.btn.tiny { padding: 4px 10px; font-size: 12.5px; border-radius: 6px; }

.error { color: var(--err); margin: 8px 0 0; font-size: 13px; }
.hint { color: var(--muted); font-size: 12px; margin-top: 4px; display: block; line-height: 1.5; }

/* ---------- 登录 ---------- */
.center-view { min-height: 100dvh; display: grid; place-items: center; padding: 20px; }
.login-card { width: 100%; max-width: 380px; }
.brand { display: flex; gap: 12px; align-items: center; margin-bottom: 18px; }
.brand.small { margin-bottom: 0; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 11px; flex-shrink: 0;
  background: linear-gradient(135deg, var(--brand), #6aa8ff);
  color: #fff; font-size: 19px; font-weight: 600;
  display: grid; place-items: center;
}
.brand.small .brand-mark { width: 34px; height: 34px; font-size: 16px; border-radius: 9px; }
.brand p { margin: 2px 0 0; font-size: 12.5px; }

label { display: block; margin-bottom: 12px; font-size: 13px; color: var(--muted); }
input, select, textarea {
  display: block; width: 100%; margin-top: 5px; padding: 8px 11px;
  font: inherit; font-size: 14px; color: var(--text);
  background: var(--bg); border: 1px solid var(--line); border-radius: 8px;
  outline: none; transition: .15s;
}
input:focus, select:focus { border-color: var(--brand); background: var(--card); }
input[type=checkbox] { display: inline-block; width: auto; margin: 0 5px 0 0; vertical-align: -1px; }
.inline-check { display: inline-flex; align-items: center; margin: 0; font-size: 12.5px; color: var(--muted); }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
.topbar-actions { display: flex; gap: 8px; }
main { max-width: 1080px; margin: 0 auto; padding: 14px; }

/* ---------- 统计 ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px; margin-bottom: 14px; }
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px 14px; box-shadow: var(--shadow);
}
.stat .v { font-size: 22px; font-weight: 600; line-height: 1.25; }
.stat .k { color: var(--muted); font-size: 12.5px; }
.stat.ok .v { color: var(--ok); }
.stat.warn .v { color: var(--warn); }
.stat.err .v { color: var(--err); }

/* ---------- 区块头 ---------- */
.section-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; flex-wrap: wrap; margin-bottom: 12px;
}
.section-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.count { color: var(--muted); font-weight: 400; font-size: 13px; }
.select-sm { width: auto; margin: 0; padding: 6px 10px; font-size: 13px; }

/* ---------- 账号卡 ---------- */
.account-list { display: grid; gap: 10px; }
.acc {
  border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px;
  display: grid; gap: 10px;
}
.acc-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.acc-title { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.acc-name { font-weight: 600; font-size: 14.5px; }
.acc-uid { color: var(--muted); font-size: 13px; }
.acc-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.acc-meta { display: flex; gap: 14px; flex-wrap: wrap; color: var(--muted); font-size: 12.5px; }
.acc-meta b { color: var(--text); font-weight: 500; }
.acc-msg { font-size: 13px; padding: 7px 10px; border-radius: 7px; background: var(--bg); word-break: break-word; }

.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 9px; border-radius: 20px; font-size: 12px; font-weight: 500;
  border: 1px solid transparent;
}
.badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.ok      { color: var(--ok);   background: rgba(23,178,106,.12); }
.badge.none    { color: var(--info); background: rgba(102,112,133,.12); }
.badge.warn    { color: var(--warn); background: rgba(247,144,9,.12); }
.badge.err     { color: var(--err);  background: rgba(240,68,56,.12); }
.badge.off     { color: var(--muted);background: rgba(138,144,153,.14); }
.badge.running { color: var(--brand);background: rgba(43,127,255,.12); }
.badge.running::before { animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1 } 50% { opacity: .25 } }

/* ---------- 设置 ---------- */
.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 4px 16px; }

/* ---------- 日志 ---------- */
.log-list { max-height: 460px; overflow: auto; border: 1px solid var(--line); border-radius: 10px; }
.log-row {
  display: grid; grid-template-columns: 76px 1fr; gap: 10px;
  padding: 8px 12px; border-bottom: 1px solid var(--line); font-size: 13px;
}
.log-row:last-child { border-bottom: 0; }
.log-time { color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.log-body { min-width: 0; }
.log-head { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.log-who { font-weight: 500; }
.log-msg { color: var(--text); word-break: break-word; }
.log-detail { color: var(--muted); font-size: 12px; margin-top: 2px; word-break: break-word; }
.log-row.success .log-msg { color: var(--ok); }
.log-row.error   .log-msg { color: var(--err); }
.log-row.warn    .log-msg { color: var(--warn); }
.log-empty { padding: 26px; text-align: center; color: var(--muted); }

/* ---------- 弹窗 ---------- */
.modal { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 16px; }
.modal-mask { position: absolute; inset: 0; background: rgba(0,0,0,.45); }
.modal-card {
  position: relative; width: 100%; max-width: 480px; margin: 0;
  max-height: 90dvh; overflow: auto;
}
.modal-card.narrow { max-width: 380px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; flex-wrap: wrap; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.adv { margin: 6px 0 12px; }
.adv summary { cursor: pointer; color: var(--muted); font-size: 13px; padding: 4px 0; }
.adv[open] summary { margin-bottom: 8px; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
  background: #1f2329; color: #fff; padding: 10px 18px; border-radius: 10px;
  font-size: 13.5px; z-index: 100; box-shadow: 0 6px 20px rgba(0,0,0,.28);
  max-width: calc(100vw - 32px); text-align: center;
}
.toast.ok  { background: var(--ok); }
.toast.err { background: var(--err); }

@media (max-width: 560px) {
  main { padding: 10px; }
  .card { padding: 13px; border-radius: 10px; }
  .settings-grid { grid-template-columns: 1fr; }
  .row2 { grid-template-columns: 1fr; }
  .topbar { padding: 9px 12px; }
  .brand h1 { font-size: 14px; }
  .brand p { display: none; }
  .log-row { grid-template-columns: 62px 1fr; padding: 7px 10px; }
}