:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #222831;
  --muted: #6b7280;
  --line: #d9dee7;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --ok: #047857;
  --warn: #b45309;
  font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

a {
  color: var(--primary);
  text-decoration: none;
}

button,
.button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  min-height: 36px;
  padding: 0 14px;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

button:hover,
.button:hover {
  border-color: #aeb7c6;
}

.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.danger {
  color: var(--danger);
}

.topbar {
  height: 58px;
  border-bottom: 1px solid var(--line);
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  color: var(--text);
  font-weight: 700;
  font-size: 18px;
}

.userbar,
.actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.container {
  max-width: 1180px;
  margin: 28px auto;
  padding: 0 18px 48px;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.tabs a {
  min-height: 36px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  border-radius: 6px;
}

.tabs a.active {
  background: #e8f0ff;
  border-color: #aac4ff;
  color: var(--primary-dark);
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  margin-bottom: 18px;
  overflow-x: auto;
}

.narrow {
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

h1,
h2 {
  margin: 0 0 14px;
}

h1 {
  font-size: 28px;
}

h2 {
  font-size: 20px;
}

.muted,
.hint {
  color: var(--muted);
  line-height: 1.65;
}

.hint {
  background: #f8fafc;
  border: 1px dashed var(--line);
  padding: 12px;
  border-radius: 6px;
}

.grid {
  display: grid;
  gap: 14px;
}

.stats {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 18px;
}

.metric {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.metric span {
  color: var(--muted);
  display: block;
  margin-bottom: 10px;
}

.metric strong {
  font-size: 30px;
}

.section-title {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.stack {
  display: grid;
  gap: 14px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  align-items: end;
}

label {
  display: grid;
  gap: 7px;
  color: #374151;
  font-size: 14px;
}

input,
select {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  font: inherit;
  background: #fff;
}

input:focus,
select:focus {
  outline: 2px solid #c7d8ff;
  border-color: #8db1ff;
}

.form-actions {
  display: flex;
  align-items: end;
  min-height: 61px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 11px 9px;
  text-align: left;
  vertical-align: top;
}

th {
  color: #4b5563;
  font-weight: 600;
  background: #f9fafb;
}

.empty {
  color: var(--muted);
  text-align: center;
  padding: 32px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid var(--line);
  color: #374151;
  background: #f8fafc;
}

.badge.sent,
.badge.completed {
  color: var(--ok);
  border-color: #a7f3d0;
  background: #ecfdf5;
}

.badge.failed,
.badge.cancelled {
  color: var(--danger);
  border-color: #fecaca;
  background: #fef2f2;
}

.badge.pending,
.badge.retrying,
.badge.running,
.badge.sending {
  color: var(--warn);
  border-color: #fed7aa;
  background: #fff7ed;
}

.flash {
  border: 1px solid #a7f3d0;
  background: #ecfdf5;
  color: var(--ok);
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 16px;
}

.flash.warn {
  border-color: #fed7aa;
  background: #fff7ed;
  color: var(--warn);
}

pre {
  overflow: auto;
  background: #111827;
  color: #f9fafb;
  border-radius: 8px;
  padding: 16px;
  line-height: 1.6;
}

@media (max-width: 860px) {
  .stats,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .section-title {
    display: grid;
  }

  .topbar {
    padding: 0 16px;
  }
}

textarea {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  font: inherit;
  resize: vertical;
  background: #fff;
}

textarea:focus {
  outline: 2px solid #c7d8ff;
  border-color: #8db1ff;
}

.subpanel {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: #fbfcfe;
}

.subpanel h3 {
  margin: 0 0 14px;
  font-size: 17px;
}

.compact-table {
  margin-top: 14px;
}

.task-groups {
  display: grid;
  gap: 12px;
}

.task-group {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}

.task-group summary {
  display: grid;
  grid-template-columns: minmax(220px, 1.5fr) minmax(260px, 1fr) auto auto auto auto;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

.task-group summary::-webkit-details-marker {
  display: none;
}

.task-group[open] summary {
  border-bottom: 1px solid var(--line);
  background: #fbfcfe;
}

.task-name {
  font-weight: 700;
}

.task-meta,
.expand-hint {
  color: var(--muted);
}

.task-group[open] .expand-hint {
  color: var(--primary);
}

.compact-table {
  min-width: 0;
}

@media (max-width: 980px) {
  .task-group summary {
    grid-template-columns: 1fr;
    align-items: start;
  }
}