:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e3e6eb;
  --text: #1d2330;
  --muted: #6b7385;
  --accent: #2f6fed;
  --accent-text: #ffffff;
  --accent-soft: #e8efff;
  --warn: #d9480f;
  --danger: #c92a2a;
  --ok-bg: #e6f6ec;
  --ok-text: #1e6b3a;
  --err-bg: #fdecec;
  --err-text: #a51d1d;
  --radius: 10px;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171d;
    --surface: #1c2028;
    --border: #2c323d;
    --text: #e6e9ef;
    --muted: #8d95a6;
    --accent: #5b8cff;
    --accent-soft: #1f2a44;
    --warn: #ff8a4c;
    --danger: #ff6b6b;
    --ok-bg: #16301f;
    --ok-text: #8fdca8;
    --err-bg: #3a1c1c;
    --err-text: #ffaaaa;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0 0 16px; }
code { font-family: var(--mono); background: var(--accent-soft); padding: 1px 6px; border-radius: 4px; }
[hidden] { display: none !important; }

.muted { color: var(--muted); }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.small-text { font-size: 13px; font-weight: normal; }

/* 顶栏 */
.topbar { background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.topbar-inner { max-width: 1100px; margin: 0 auto; padding: 0 16px; height: 52px; display: flex; align-items: center; gap: 20px; }
.brand { font-weight: 700; color: var(--text); font-size: 17px; }
.topbar nav { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.topbar nav a { color: var(--muted); padding: 6px 10px; border-radius: 6px; white-space: nowrap; }
.topbar nav a:hover { text-decoration: none; color: var(--text); }
.topbar nav a.active { color: var(--accent); background: var(--accent-soft); }
.me { display: flex; align-items: center; gap: 12px; white-space: nowrap; }
.me form { margin: 0; }

.container { max-width: 1100px; margin: 0 auto; padding: 24px 16px 48px; }

/* 提示 */
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; background: var(--accent-soft); }
.flash.ok { background: var(--ok-bg); color: var(--ok-text); }
.flash.error { background: var(--err-bg); color: var(--err-text); }
.toast {
  position: fixed; left: 50%; bottom: 32px; transform: translate(-50%, 20px);
  background: var(--text); color: var(--bg); padding: 8px 18px; border-radius: 999px;
  opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 100;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid var(--accent); background: var(--accent); color: var(--accent-text);
  padding: 8px 18px; border-radius: 8px; font: inherit; cursor: pointer; text-decoration: none !important;
}
.btn:hover { filter: brightness(1.08); }
.btn.secondary { background: transparent; color: var(--accent); }
.btn.danger { background: var(--danger); border-color: var(--danger); }
.btn.small { padding: 4px 12px; font-size: 14px; }
.btn.block { width: 100%; }
button.link { background: none; border: 0; padding: 0; color: var(--accent); font: inherit; cursor: pointer; }
button.link.danger { color: var(--danger); }

/* 表单 */
.form { display: flex; flex-direction: column; gap: 14px; }
.form label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; color: var(--muted); }
.form label.inline, label.inline { flex-direction: row; align-items: center; gap: 6px; color: var(--text); font-size: 15px; }
input, textarea, select {
  font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; width: 100%;
}
input[type=checkbox], input[type=radio] { width: auto; }
textarea { font-family: var(--mono); resize: vertical; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.narrow { max-width: 420px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.row.three { grid-template-columns: repeat(3, 1fr); }
fieldset { border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px 12px; margin: 0; display: flex; flex-wrap: wrap; gap: 8px 20px; }
legend { color: var(--muted); font-size: 14px; padding: 0 4px; }
.picks { width: 100%; display: flex; flex-wrap: wrap; gap: 8px 18px; padding-top: 8px; border-top: 1px dashed var(--border); }
.picks p { width: 100%; margin: 0; }
.advanced summary { cursor: pointer; color: var(--muted); font-size: 14px; }
.advanced .row { margin-top: 12px; }
.qr { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: -6px; font-size: 13px; }
.qr label.btn { flex-direction: row; color: var(--accent); font-size: 14px; }
.actions { display: flex; gap: 10px; }
.danger-zone { margin-top: 20px; display: flex; align-items: center; justify-content: space-between; padding: 12px 20px; border: 1px solid var(--border); border-radius: var(--radius); }
.inline-form { flex-direction: row; align-items: flex-end; flex-wrap: wrap; margin-bottom: 20px; }
.inline-form > label:not(.inline) { flex: 1 1 180px; }
.inline-form > label.inline { padding-bottom: 9px; }

/* 登录 */
.login { max-width: 360px; margin: 10vh auto 0; }
.login h1 { margin-bottom: 2px; font-size: 26px; }
.login > p { margin: 0 0 20px; }

/* 验证码卡片 */
.toolbar { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.toolbar input { max-width: 340px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.card-head .title { min-width: 0; }
.issuer { font-weight: 600; }
.name { color: var(--muted); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.edit { font-size: 13px; flex-shrink: 0; }
.code {
  font-family: var(--mono); font-size: 32px; font-weight: 600; letter-spacing: 2px; text-align: left;
  background: none; border: 0; padding: 4px 0; color: var(--accent); cursor: pointer; white-space: nowrap;
}
.code:hover { opacity: .8; }
.card.expiring .code { color: var(--warn); }
.meta { display: flex; align-items: center; gap: 10px; }
.bar { flex: 1; height: 4px; background: var(--border); border-radius: 2px; overflow: hidden; }
.bar span { display: block; height: 100%; width: 100%; background: var(--accent); transition: width .25s linear; }
.card.expiring .bar span { background: var(--warn); }
.secs { font-size: 12px; color: var(--muted); width: 28px; text-align: right; font-variant-numeric: tabular-nums; }
.next { align-self: flex-start; background: none; border: 0; padding: 0; font: 13px var(--mono); color: var(--muted); cursor: pointer; }
.next:hover { color: var(--text); }
.foot { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 13px; margin-top: 2px; }
.note { color: var(--muted); }
.badge { font-size: 12px; background: var(--accent-soft); color: var(--accent); padding: 1px 8px; border-radius: 999px; white-space: nowrap; }
.empty { text-align: center; padding: 60px 0; }

/* 表格 */
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--muted); font-weight: 500; }
tr:last-child td { border-bottom: 0; }
.row-form { display: inline-flex; gap: 6px; align-items: center; margin: 0 10px 0 0; }
.row-form input { width: 130px; padding: 4px 8px; }

@media (max-width: 640px) {
  .topbar-inner { height: auto; flex-wrap: wrap; padding: 10px 16px 6px; gap: 6px 10px; }
  .topbar nav { order: 3; flex-basis: 100%; margin: 0 -10px; scrollbar-width: none; }
  .me { margin-left: auto; }
  .row, .row.three { grid-template-columns: 1fr; }
  .toolbar .hint { display: none; }
  .toolbar input { max-width: none; }
}