:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --panel: #ffffff;
  --text: #18212f;
  --muted: #667085;
  --line: #e3e7ed;
  --brand: #185adb;
  --brand-dark: #1048b6;
  --danger: #d92d20;
  --danger-bg: #fff3f1;
  --success: #067647;
  --success-bg: #ecfdf3;
  --shadow: 0 1px 3px rgba(16, 24, 40, .06), 0 10px 30px rgba(16, 24, 40, .04);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.55 Inter, ui-sans-serif, system-ui, "Microsoft YaHei", sans-serif; }
button, input, select, textarea { font: inherit; }
a { color: inherit; }
.shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding-bottom: 72px; }
.topbar { min-height: 72px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: var(--brand); color: #fff; font-size: 17px; font-weight: 900; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 16px; }
.brand small { color: var(--muted); font-size: 11px; }
.button { appearance: none; border: 1px solid var(--brand); border-radius: 8px; background: var(--brand); color: #fff; padding: 10px 15px; font-weight: 700; cursor: pointer; transition: .15s ease; white-space: nowrap; }
.button:hover { background: var(--brand-dark); border-color: var(--brand-dark); }
.button:disabled { cursor: wait; opacity: .6; }
.button.ghost { background: #fff; color: #344054; border-color: #d0d5dd; }
.button.ghost:hover { background: #f9fafb; border-color: #98a2b3; }
.button.small { padding: 7px 11px; font-size: 13px; }
.auth-loading { min-height: 54vh; display: flex; align-items: center; justify-content: center; gap: 13px; color: var(--muted); }
.auth-loading strong { display: block; color: #344054; font-size: 15px; }
.auth-loading p { margin: 2px 0 0; font-size: 13px; }
.loading-spinner { width: 24px; height: 24px; border: 3px solid #dbe4f4; border-top-color: var(--brand); border-radius: 50%; animation: loading-spin .7s linear infinite; }
@keyframes loading-spin { to { transform: rotate(360deg); } }
.login-card { max-width: 850px; margin: 10vh auto; padding: 36px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); box-shadow: var(--shadow); display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.kicker { display: block; margin-bottom: 6px; color: var(--brand); font-size: 11px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.kicker.danger { color: var(--danger); }
.kicker.warning { color: #b54708; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 8px; font-size: clamp(27px, 4vw, 36px); line-height: 1.15; letter-spacing: -.035em; }
h2 { margin-bottom: 5px; font-size: 20px; line-height: 1.3; letter-spacing: -.02em; }
.login-copy p, .dashboard-heading p, .panel-header p, .add-site-content > p, .history-note { color: var(--muted); margin-bottom: 0; }
.login-form label, .site-form label, .edit-form label, .dashboard-controls label { color: #344054; font-size: 13px; font-weight: 700; }
.login-row { display: flex; gap: 8px; margin-top: 7px; }
input, select, textarea { min-height: 40px; padding: 9px 11px; border: 1px solid #d0d5dd; border-radius: 8px; background: #fff; color: var(--text); outline: none; }
input:focus, select:focus, textarea:focus { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(24, 90, 219, .12); }
.login-row input { min-width: 0; flex: 1; }
.form-message { min-height: 22px; margin: 8px 0 0; font-size: 13px; color: var(--muted); }
.form-message.error { color: var(--danger); }
.form-message.success { color: var(--success); }
.dashboard-heading { display: flex; justify-content: space-between; gap: 32px; align-items: end; padding: 46px 0 24px; }
.dashboard-heading h1 { margin-bottom: 5px; }
.dashboard-controls { display: flex; gap: 9px; align-items: center; }
.dashboard-controls label { white-space: nowrap; }
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 18px; }
.metric { padding: 20px 22px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); box-shadow: 0 1px 2px rgba(16, 24, 40, .03); }
.metric span { display: block; margin-bottom: 3px; color: var(--muted); font-size: 13px; }
.metric strong { display: block; font-size: 30px; line-height: 1.2; }
.metric.danger strong { color: var(--danger); }
.metric.good strong { color: var(--success); }
.metric.warning strong { color: #b54708; }
.panel { margin-bottom: 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); box-shadow: var(--shadow); }
.panel-header { display: flex; align-items: start; justify-content: space-between; gap: 20px; padding: 22px 24px; border-bottom: 1px solid var(--line); }
.updated-at { color: var(--muted); font-size: 12px; white-space: nowrap; }
.fault-list { display: grid; gap: 12px; padding: 16px; }
.fault-card { border: 1px solid #f2b8b5; border-left: 4px solid var(--danger); border-radius: 9px; background: #fffafa; padding: 17px 18px; }
.fault-card-top, .history-item-head { display: flex; justify-content: space-between; gap: 16px; align-items: start; }
.fault-site, .site-name { display: inline-block; font-weight: 800; text-decoration: none; }
.fault-site { font-size: 16px; }
.fault-site:hover, .site-name:hover { color: var(--brand); text-decoration: underline; }
.site-url { display: block; max-width: 480px; overflow: hidden; color: var(--muted); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.fault-count { border-radius: 999px; background: var(--danger-bg); color: var(--danger); padding: 4px 9px; font-size: 12px; font-weight: 800; white-space: nowrap; }
.event-badges { display: flex; gap: 7px; align-items: center; }
.event-state { border-radius: 999px; padding: 4px 9px; background: #f2f4f7; color: #475467; font-size: 12px; font-weight: 800; white-space: nowrap; }
.event-state.open { background: var(--danger-bg); color: var(--danger); }
.event-state.recovered { background: var(--success-bg); color: var(--success); }
.event-state.suspected, .event-state.blocked { background: #fffaeb; color: #b54708; }
.event-summary { display: grid; grid-template-columns: max-content 1fr; gap: 9px; margin: 15px 0 10px; }
.event-summary strong { color: var(--danger); }
.blocked-card { border: 1px solid #fedf89; border-left: 4px solid #f79009; border-radius: 9px; background: #fffcf5; padding: 17px 18px; }
.blocked-card .event-summary strong { color: #b54708; }
.diagnostic-list { display: grid; gap: 5px; margin: 10px 0 14px; padding: 10px 12px; border-radius: 7px; background: rgba(255,255,255,.72); font-size: 12px; }
.diagnostic-list div { display: grid; grid-template-columns: 105px 1fr; gap: 10px; }
.diagnostic-list dt { color: var(--muted); }
.diagnostic-list dd { margin: 0; color: #344054; overflow-wrap: anywhere; }
.history-link { margin-top: 10px; }
.finding-list { display: grid; gap: 9px; margin: 15px 0; padding: 0; list-style: none; }
.finding-list li { display: grid; grid-template-columns: max-content 1fr; column-gap: 9px; align-items: baseline; }
.finding-list strong { color: var(--danger); font-size: 13px; }
.finding-list span { color: #344054; }
.finding-list code { grid-column: 1 / -1; display: block; margin-top: 3px; color: #475467; font: 12px/1.5 ui-monospace, SFMono-Regular, Consolas, monospace; overflow-wrap: anywhere; }
.fault-summary { color: #475467; }
.fault-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center; color: var(--muted); font-size: 12px; }
.text-button { appearance: none; border: 0; background: transparent; color: var(--brand); padding: 2px 0; cursor: pointer; font-weight: 700; white-space: nowrap; }
.text-button:hover { text-decoration: underline; }
.text-button.danger { color: var(--danger); }
.all-clear { display: flex; gap: 13px; align-items: center; padding: 26px 22px; border: 1px solid #abefc6; border-radius: 9px; background: var(--success-bg); color: var(--success); }
.all-clear > span { display: grid; place-items: center; flex: 0 0 auto; width: 30px; height: 30px; border-radius: 50%; background: var(--success); color: #fff; font-weight: 900; }
.all-clear strong { display: block; }
.all-clear p { margin: 2px 0 0; color: #347859; font-size: 13px; }
.all-clear.compact { margin-top: 14px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 14px 24px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
th { color: var(--muted); font-size: 12px; font-weight: 700; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: #fafbfc; }
.count-button { appearance: none; min-width: 34px; border: 0; border-radius: 999px; background: #f2f4f7; color: #475467; padding: 5px 10px; font-weight: 900; cursor: pointer; }
.count-button.has-fault { background: var(--danger-bg); color: var(--danger); }
.check-state { color: #475467; white-space: nowrap; }
.check-state.paused { color: #98a2b3; }
.check-state.warning { color: var(--danger); font-weight: 800; }
.check-state.blocked, .check-state.suspected { color: #b54708; font-weight: 800; }
.tracking-state { display: inline-block; border-radius: 999px; background: #f2f4f7; color: #475467; padding: 3px 8px; font-size: 12px; font-weight: 800; white-space: nowrap; }
.tracking-state.change_pending { background: #eff8ff; color: #175cd3; }
.tracking-state.anomaly_missing, .tracking-state.anomaly_replaced { background: var(--danger-bg); color: var(--danger); }
.tracking-state.scan_error { background: #fffaeb; color: #b54708; }
.tracking-ids { display: block; max-width: 230px; overflow: hidden; color: #98a2b3; font: 10px/1.4 ui-monospace, SFMono-Regular, Consolas, monospace; text-overflow: ellipsis; white-space: nowrap; }
.row-actions { display: flex; justify-content: flex-end; gap: 10px; }
.compact-label { display: none; }
.table-empty { padding: 34px 24px; color: var(--muted); text-align: center; }
.add-site summary { padding: 18px 24px; cursor: pointer; color: var(--brand); font-weight: 800; }
.add-site[open] summary { border-bottom: 1px solid var(--line); }
.add-site-content { padding: 22px 24px; }
.add-mode-switch { display: inline-flex; gap: 3px; padding: 3px; border-radius: 9px; background: #f2f4f7; }
.add-mode { appearance: none; border: 0; border-radius: 7px; background: transparent; color: #667085; padding: 7px 12px; cursor: pointer; font-weight: 700; }
.add-mode.active { background: #fff; color: var(--brand); box-shadow: 0 1px 3px rgba(16, 24, 40, .12); }
.site-form { display: grid; grid-template-columns: 1.2fr 1.6fr .8fr max-content; gap: 12px; align-items: end; margin-top: 18px; }
.site-form label { display: grid; gap: 6px; }
.fixed-interval { display: grid; gap: 6px; }
.fixed-interval span { color: #344054; font-size: 13px; font-weight: 700; }
.fixed-interval strong { display: flex; min-height: 40px; align-items: center; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px; background: #f8fafc; color: #344054; }
.bulk-panel { margin-top: 18px; }
.bulk-heading { display: flex; align-items: start; justify-content: space-between; gap: 20px; }
.bulk-heading strong { color: #344054; }
.bulk-heading p, .bulk-help { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.bulk-input-label { display: block; margin: 16px 0 6px; color: #344054; font-size: 13px; font-weight: 700; }
#bulk-input { display: block; width: 100%; min-height: 170px; resize: vertical; font: 13px/1.65 ui-monospace, SFMono-Regular, Consolas, monospace; }
.bulk-preview { max-height: 240px; margin-top: 14px; overflow: auto; border: 1px solid var(--line); border-radius: 8px; }
.bulk-preview:empty { display: none; }
.bulk-preview-summary { display: flex; flex-wrap: wrap; gap: 8px 16px; padding: 10px 12px; border-bottom: 1px solid var(--line); background: #f8fafc; color: #475467; font-size: 12px; }
.bulk-preview-summary strong { color: var(--success); }
.bulk-preview-summary .has-error { color: var(--danger); }
.bulk-preview-row { display: grid; grid-template-columns: 42px minmax(120px, .8fr) minmax(220px, 1.4fr) minmax(115px, .6fr); gap: 10px; align-items: center; padding: 9px 12px; border-bottom: 1px solid var(--line); font-size: 12px; }
.bulk-preview-row:last-child { border-bottom: 0; }
.bulk-preview-row .line-number, .bulk-preview-row .preview-url { color: var(--muted); }
.bulk-preview-row .preview-url { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bulk-row-state { font-weight: 700; }
.bulk-row-state.ready { color: var(--success); }
.bulk-row-state.error { color: var(--danger); }
.bulk-row-state.skipped { color: #b54708; }
.bulk-actions { display: flex; justify-content: flex-end; gap: 9px; }
.history-dialog { width: min(760px, calc(100% - 28px)); max-height: min(86vh, 900px); overflow: auto; border: 1px solid var(--line); border-radius: 14px; background: #fff; color: var(--text); padding: 24px; box-shadow: 0 30px 80px rgba(16, 24, 40, .24); }
.history-dialog::backdrop { background: rgba(16, 24, 40, .52); backdrop-filter: blur(2px); }
.edit-dialog { width: min(580px, calc(100% - 28px)); max-height: min(90vh, 760px); overflow: auto; border: 1px solid var(--line); border-radius: 14px; background: #fff; color: var(--text); padding: 0; box-shadow: 0 30px 80px rgba(16, 24, 40, .24); }
.edit-dialog::backdrop { background: rgba(16, 24, 40, .52); backdrop-filter: blur(2px); }
.edit-form { display: grid; gap: 18px; padding: 24px; }
.edit-form label { display: grid; gap: 6px; }
.edit-form label small { color: var(--muted); font-size: 12px; font-weight: 400; }
.dialog-close { appearance: none; width: 32px; height: 32px; border: 0; border-radius: 8px; background: #f2f4f7; color: #475467; cursor: pointer; font-size: 22px; line-height: 1; }
.dialog-close:hover { background: #e4e7ec; color: var(--text); }
.edit-warning { display: grid; gap: 3px; padding: 12px 14px; border: 1px solid #fedf89; border-radius: 8px; background: #fffaeb; color: #7a2e0e; font-size: 12px; }
.edit-warning strong { color: #b54708; font-size: 13px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 9px; padding-top: 2px; }
.dialog-header { display: flex; justify-content: space-between; gap: 18px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.dialog-header .site-url { max-width: 570px; }
.history-note { padding: 15px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.history-list { display: grid; gap: 11px; margin-top: 14px; }
.history-item { padding: 15px 16px; border: 1px solid var(--line); border-radius: 9px; }
.history-item-head span { color: var(--muted); font-size: 12px; }
.history-item .finding-list { margin-bottom: 0; }
.empty { color: var(--muted); text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (prefers-reduced-motion: reduce) {
  .loading-spinner { animation-duration: 1.4s; }
}

@media (max-width: 840px) {
  .shell { width: min(100% - 24px, 1180px); }
  .login-card { grid-template-columns: 1fr; gap: 26px; margin: 5vh auto; padding: 26px; }
  .dashboard-heading { align-items: start; flex-direction: column; padding-top: 32px; }
  .metrics { grid-template-columns: 1fr; }
  .site-form { grid-template-columns: 1fr; }
  .bulk-preview-row { grid-template-columns: 34px minmax(100px, .8fr) minmax(190px, 1.4fr) minmax(110px, .6fr); }
  th, td { padding: 13px 15px; }
  .table-wrap .row-actions { min-width: 250px; }
}

@media (max-width: 560px) {
  .topbar { min-height: 62px; }
  .topbar .row-actions { gap: 6px; }
  .topbar .button.small { padding: 6px 8px; font-size: 12px; }
  .topbar .wide-label { display: none; }
  .topbar .compact-label { display: inline; }
  .dashboard-controls { width: 100%; display: grid; grid-template-columns: 1fr 1fr; }
  .dashboard-controls label { grid-column: 1 / -1; }
  .login-row { flex-direction: column; }
  .panel-header { padding: 18px; }
  .updated-at { display: none; }
  .fault-list { padding: 10px; }
  .fault-card { padding: 14px; }
  .finding-list li { grid-template-columns: 1fr; }
  .finding-list code { grid-column: 1; }
  .event-summary, .diagnostic-list div { grid-template-columns: 1fr; }
  .edit-form { padding: 18px; }
  .bulk-heading { align-items: stretch; flex-direction: column; }
  .bulk-heading .button { align-self: start; }
  .bulk-preview-row { grid-template-columns: 34px minmax(0, 1fr) minmax(80px, 110px); align-items: start; }
  .bulk-preview-row .preview-url { grid-column: 2 / -1; grid-row: 2; }
  .bulk-row-state { text-align: right; white-space: normal; }
}