:root {
  --bg: #f0f2f5;
  --card: #ffffff;
  --primary: #07c160;
  --primary-dark: #06ad56;
  --danger: #e54d42;
  --warn: #fa9d3b;
  --text: #1a1a1a;
  --muted: #888;
  --border: #e5e5e5;
  --nav: #2c2c2c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

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

.nav {
  background: var(--nav);
  color: #fff;
  padding: 0 24px;
  display: flex;
  align-items: center;
  height: 56px;
  gap: 28px;
}

.nav .brand {
  font-weight: 700;
  font-size: 16px;
  color: #fff;
  text-decoration: none;
  margin-right: 12px;
}

.nav a {
  color: #ccc;
  text-decoration: none;
  font-size: 14px;
}

.nav a.active,
.nav a:hover {
  color: #fff;
}

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

.card {
  background: var(--card);
  border-radius: 8px;
  padding: 20px 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
  margin-bottom: 16px;
}

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 0 0 12px; }

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat {
  background: var(--card);
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}

.stat .num {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
}

.stat .label {
  color: var(--muted);
  font-size: 13px;
  margin-top: 4px;
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.btn {
  display: inline-block;
  border: none;
  border-radius: 4px;
  padding: 8px 16px;
  font-size: 14px;
  cursor: pointer;
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  line-height: 1.4;
}

.btn:hover {
  background: var(--primary-dark);
  text-decoration: none;
  color: #fff;
}

.btn-secondary {
  background: #576b95;
}

.btn-secondary:hover { background: #455a80; color: #fff; }

.btn-danger {
  background: var(--danger);
}

.btn-danger:hover { background: #c93c33; color: #fff; }

.btn-outline {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background: #f7f7f7;
  color: var(--text);
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  border-bottom: 1px solid var(--border);
  padding: 10px 8px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 600;
  background: #fafafa;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 12px;
  color: #fff;
}

.badge-pending { background: #576b95; }
.badge-sending { background: var(--warn); }
.badge-success { background: var(--primary); }
.badge-partial { background: var(--warn); }
.badge-failed { background: var(--danger); }
.badge-cancelled { background: #999; }

.alert {
  padding: 10px 14px;
  border-radius: 4px;
  margin-bottom: 16px;
  font-size: 14px;
}

.alert-success {
  background: #e8f8ef;
  color: #07c160;
  border: 1px solid #b7ebc9;
}

.alert-error {
  background: #fdeeee;
  color: var(--danger);
  border: 1px solid #f5c6c2;
}

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
}

.form-group .hint {
  font-size: 12px;
  color: var(--muted);
  font-weight: 400;
  margin-left: 6px;
}

.form-control {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
}

textarea.form-control {
  min-height: 140px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 13px;
}

.form-inline-check {
  display: flex;
  gap: 20px;
  margin-top: 6px;
}

.form-inline-check label {
  font-weight: 400;
  display: flex;
  align-items: center;
  gap: 6px;
}

.user-pick {
  max-height: 160px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px;
  background: #fafafa;
}

.user-pick label {
  display: block;
  font-weight: 400;
  padding: 4px 0;
  font-size: 13px;
}

.meta-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 8px;
  font-size: 14px;
  margin-bottom: 8px;
}

.meta-row .k { color: var(--muted); }

.pre {
  background: #f6f8fa;
  padding: 12px;
  border-radius: 4px;
  overflow-x: auto;
  font-size: 12px;
  white-space: pre-wrap;
  word-break: break-all;
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  padding: 24px;
}

@media (max-width: 720px) {
  .stats { grid-template-columns: 1fr; }
  .nav { flex-wrap: wrap; height: auto; padding: 12px; gap: 12px; }
}