:root {
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --muted: #64748b;
  --primary: #1e3a8a;
  --danger: #b91c1c;
  --success: #15803d;
  --warning: #b45309;
}

* { box-sizing: border-box; }

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

a { color: inherit; text-decoration: none; }

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}

.nav { display: flex; gap: 6px; flex-wrap: wrap; }

.nav-link {
  padding: 8px 14px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 14px;
}

.nav-link.active { background: var(--primary); color: white; }

.main { max-width: 960px; margin: 0 auto; padding: 24px; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
}

.btn {
  padding: 8px 14px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: white;
  cursor: pointer;
  font-size: 14px;
}

.btn-primary { background: var(--primary); color: white; border-color: var(--primary); }
.btn-danger { background: white; color: var(--danger); border-color: var(--danger); }
.btn-success { background: var(--success); color: white; border-color: var(--success); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-needs-approval { background: #fef3c7; color: var(--warning); }
.badge-escalated { background: #fee2e2; color: var(--danger); }
.badge-sent { background: #dcfce7; color: var(--success); }
.badge-default { background: #e2e8f0; color: var(--muted); }

textarea, input, select {
  width: 100%;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: inherit;
  font-size: 14px;
}

.row { display: flex; gap: 8px; align-items: center; }
.muted { color: var(--muted); font-size: 13px; }
.error { color: var(--danger); font-size: 13px; margin: 8px 0; }
.login-box { max-width: 360px; margin: 80px auto; }
label { font-size: 13px; color: var(--muted); display: block; margin-bottom: 4px; margin-top: 12px; }