:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --brand: #d946ef;
  --brand-2: #0ea5e9;
  --danger: #dc2626;
  --border: #e5e7eb;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(160deg, #ecfeff, #fdf2f8 55%, #eff6ff);
}
.admin-shell { max-width: 1100px; margin: 0 auto; padding: 1rem; }
.auth-card, .dashboard > section, .dashboard-header {
  background: var(--card); border: 1px solid var(--border); border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0,0,0,.06);
}
.auth-card { max-width: 460px; margin: 2rem auto; padding: 1.3rem; }
h1,h2,h3 { margin: 0 0 .6rem 0; }
p { color: var(--muted); }
label { display: block; margin-top: .8rem; font-weight: 600; }
input, button { font: inherit; }
input[type="text"], input[type="password"] {
  width: 100%; margin-top: .35rem; padding: .75rem; border: 1px solid var(--border); border-radius: 10px;
}
button {
  margin-top: 1rem; border: none; border-radius: 10px; padding: .7rem .95rem;
  background: linear-gradient(120deg, var(--brand), var(--brand-2)); color: #fff; font-weight: 700; cursor: pointer;
}
button.ghost { background: #fff; color: var(--text); border: 1px solid var(--border); }
button.danger { background: var(--danger); }
.hidden { display: none !important; }
.feedback { min-height: 1.2rem; font-size: .9rem; }
.dashboard { display: grid; gap: 1rem; }
.dashboard-header {
  padding: 1rem; display: flex; justify-content: space-between; align-items: center;
}
.header-actions { display: flex; gap: .6rem; }
.config-card, .table-card { padding: 1rem; }
.config-grid { display: grid; gap: .75rem; }
.switch-row { display: flex; gap: .5rem; align-items: center; }
.switch-row input { width: 18px; height: 18px; }
.config-actions { display: flex; gap: .5rem; flex-wrap: wrap; }
.table-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: .5rem; }
.table-wrapper { overflow: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { border-bottom: 1px solid var(--border); padding: .6rem; vertical-align: top; text-align: left; }
.empty { padding: 1rem; color: var(--muted); background: #f9fafb; border-radius: 10px; }
.delete-lead { margin: 0; background: var(--danger); }
@media (max-width: 768px) {
  .dashboard-header { flex-direction: column; align-items: flex-start; gap: .8rem; }
  .admin-shell { padding: .7rem; }
}