:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --ok: #059669;
  --warn: #d97706;
  --radius: 10px;
}

* { box-sizing: border-box; }

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

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

.wrap { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }

.topbar { background: #111827; color: #fff; }
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.brand { color: #fff; font-weight: 700; font-size: 16px; }
.brand:hover { text-decoration: none; }
.nav { display: flex; gap: 18px; }
.nav a { color: #d1d5db; font-size: 14px; }
.nav a:hover { color: #fff; text-decoration: none; }

main { padding: 24px 0 60px; }

h1 { font-size: 24px; margin: 0 0 4px; }
h2 { font-size: 18px; margin: 0; }
h3 { font-size: 16px; margin: 18px 0 8px; }

.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 18px;
}
.card.narrow { max-width: 440px; margin: 60px auto; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}
.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.stat-label { display: block; color: var(--muted); font-size: 13px; }
.stat strong { font-size: 26px; }

.table-wrap { overflow-x: auto; padding: 0; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th {
  background: #f9fafb;
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
}
tr:last-child td { border-bottom: none; }

.muted { color: var(--muted); }
.small { font-size: 12px; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  background: #eef2ff;
  color: #3730a3;
  margin-right: 4px;
}
.badge.running { background: #ecfdf5; color: var(--ok); }
.badge.error { background: #fef2f2; color: var(--danger); }
.badge.idle { background: #f3f4f6; color: var(--muted); }
.badge.on, .badge.ok, .badge.sent, .badge.available { background: #ecfdf5; color: var(--ok); }
.badge.waitlist { background: #fffbeb; color: var(--warn); }
.badge.sold_out, .badge.closed { background: #f3f4f6; color: var(--muted); }
.badge.off { background: #f3f4f6; color: var(--muted); }
.badge.failed { background: #fef2f2; color: var(--danger); }
.badge.pending { background: #fffbeb; color: var(--warn); }
.badge.cooled_down { background: #fffbeb; color: var(--warn); }

.btn {
  display: inline-block;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: #f9fafb; text-decoration: none; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.danger { color: var(--danger); border-color: #fecaca; }
.btn.danger:hover { background: #fef2f2; }
.btn.small { padding: 5px 10px; font-size: 12px; }

.actions { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.actions form { display: inline; margin: 0; }

.flash {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: #1e40af;
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 16px;
}
.alert.error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 14px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
}
.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  color: #374151;
}
.form-grid label.check {
  flex-direction: row;
  align-items: center;
  gap: 8px;
}
.form-grid input, .form-grid select {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
}
.form-grid input[type=checkbox] { width: auto; }
.form-actions { grid-column: 1 / -1; display: flex; gap: 10px; }
.form-note { grid-column: 1 / -1; margin: 0; }

.pager { display: flex; align-items: center; gap: 12px; }

.stack { display: flex; flex-direction: column; gap: 14px; }
.stack label { display: flex; flex-direction: column; gap: 6px; font-size: 14px; }
.stack input {
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 14px;
}

@media (max-width: 760px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .topbar-inner { height: auto; padding: 10px 0; flex-direction: column; gap: 8px; }
  .nav { gap: 12px; }
}