:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --primary: #2563eb;
  --primary-text: #ffffff;
  --danger: #dc2626;
  --success: #16a34a;
  --warning-bg: #fef3c7;
  --warning-text: #92400e;
  --radius: 10px;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.5; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 1.5rem; margin: 0 0 1rem; }
h2 { font-size: 1.15rem; margin: 1.5rem 0 .75rem; }

.topbar { background: #111827; color: #fff; }
.topbar .inner { max-width: 1200px; margin: 0 auto; padding: .6rem 16px; display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
.topbar .brand { font-weight: 700; color: #fff; margin-right: .5rem; }
.topbar nav { display: flex; gap: .25rem; flex-wrap: wrap; flex: 1; }
.topbar nav a { color: #d1d5db; padding: .3rem .6rem; border-radius: 6px; }
.topbar nav a:hover, .topbar nav a.active { background: #374151; color: #fff; text-decoration: none; }
.topbar .user { display: flex; gap: .75rem; align-items: center; color: #9ca3af; font-size: .9rem; }
.topbar form { margin: 0; }
.acting { background: var(--warning-bg); color: var(--warning-text); text-align: center; padding: .4rem 16px; font-size: .9rem; }
.acting form { display: inline; }

main { max-width: 1200px; margin: 0 auto; padding: 1.5rem 16px 3rem; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; margin-bottom: 1rem; }
.grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.row { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }

.btn { display: inline-block; border: 1px solid var(--border); background: var(--surface); color: var(--text); padding: .45rem .9rem; border-radius: 8px; cursor: pointer; font: inherit; }
.btn:hover { text-decoration: none; background: #f3f4f6; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
.btn-primary:hover { background: #1d4ed8; }
.btn-danger { color: var(--danger); border-color: #fecaca; }
.btn-link { background: none; border: none; color: #d1d5db; cursor: pointer; font: inherit; padding: 0; }
.btn-lg { padding: .75rem 1.5rem; font-size: 1.05rem; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .55rem .5rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 600; }
.table-wrap { overflow-x: auto; }

form p { margin: 0 0 .9rem; }
label { display: block; font-weight: 500; margin-bottom: .25rem; }
input[type=text], input[type=email], input[type=password], input[type=date], input[type=time], input[type=number], input[type=search], input[type=datetime-local], select, textarea {
  width: 100%; max-width: 480px; padding: .5rem .6rem; border: 1px solid #d1d5db; border-radius: 8px; font: inherit; background: #fff; color: var(--text);
}
textarea { max-width: 640px; }
input[type=checkbox] { margin-right: .4rem; }
.checkbox label { display: inline; font-weight: 400; }
.helptext { display: block; color: var(--muted); font-size: .85rem; }
.errorlist { color: var(--danger); margin: .25rem 0; padding-left: 1.1rem; font-size: .9rem; }

.messages { list-style: none; padding: 0; margin: 0 0 1rem; }
.messages li { padding: .65rem .9rem; border-radius: 8px; margin-bottom: .5rem; background: #e0e7ff; }
.messages li.success { background: #dcfce7; }
.messages li.error { background: #fee2e2; }
.messages li.warning { background: var(--warning-bg); }
.alert { padding: .75rem 1rem; border-radius: 8px; background: var(--warning-bg); color: var(--warning-text); margin-bottom: 1rem; }
.alert-error { background: #fee2e2; color: #991b1b; }

.badge { display: inline-block; padding: .1rem .5rem; border-radius: 999px; font-size: .8rem; background: #e5e7eb; white-space: nowrap; }
.badge-scheduled, .badge-pending, .badge-trialing { background: #dbeafe; color: #1e40af; }
.badge-confirmed, .badge-sent, .badge-active, .badge-approved { background: #dcfce7; color: #166534; }
.badge-cancelled_by_client, .badge-cancelled_by_staff, .badge-cancelled, .badge-superseded, .badge-inactive { background: #f3f4f6; color: #4b5563; }
.badge-no_show, .badge-failed, .badge-suspended, .badge-rejected { background: #fee2e2; color: #991b1b; }
.badge-expired, .badge-grace_period, .badge-past_due, .badge-sending { background: var(--warning-bg); color: var(--warning-text); }

.sms-preview { white-space: pre-wrap; font-family: ui-monospace, Menlo, monospace; background: #f3f4f6; border-radius: 8px; padding: .75rem; max-width: 420px; word-break: break-all; }
#calendar { background: var(--surface); padding: .75rem; border-radius: var(--radius); border: 1px solid var(--border); }
.fc .fc-event { cursor: pointer; }

.login-wrap, .public-wrap { max-width: 420px; margin: 4rem auto; padding: 0 16px; }
.public-wrap .card { text-align: center; padding: 2rem 1.5rem; }
.public-wrap .big { font-size: 1.25rem; font-weight: 600; margin: .5rem 0 1.25rem; }

@media (max-width: 640px) {
  .topbar .user { width: 100%; justify-content: space-between; }
  main { padding-top: 1rem; }
  th, td { padding: .45rem .35rem; }
}