:root {
  --bg: #f1f5f9;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #0ea5e9;
  --border: #e2e8f0;
  --danger: #dc2626;
}

* { box-sizing: border-box; }

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

.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.topbar .brand { font-weight: 700; font-size: 18px; color: var(--primary); text-decoration: none; }
.topbar .nav { display: flex; gap: 16px; }
.topbar .nav a { color: var(--text); text-decoration: none; font-size: 14px; }
.topbar .nav a:hover { color: var(--primary); }
.topbar .account { margin-left: auto; display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--muted); }
.topbar .account .tenant { font-weight: 600; color: var(--text); }

.container { max-width: 1040px; margin: 24px auto; padding: 0 24px; }

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 24px 0 12px; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.flash.notice { background: #ecfdf5; color: #065f46; }
.flash.alert { background: #fef2f2; color: #991b1b; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 20px; margin-bottom: 20px; }

table { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: 12px; overflow: hidden; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); font-size: 14px; }
th { background: #f8fafc; color: var(--muted); font-weight: 600; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.confirmed { background: #ecfdf5; color: #065f46; }
.badge.pending { background: #fffbeb; color: #92400e; }
.badge.cancelled { background: #f1f5f9; color: #64748b; }
.badge.completed { background: #eff6ff; color: #1e40af; }
.badge.no_show { background: #fef2f2; color: #b91c1c; }

label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
input, select { width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; }
.row { display: flex; gap: 12px; }
.row > * { flex: 1; }

.btn { display: inline-block; background: var(--primary); color: #fff; border: none; padding: 9px 16px; border-radius: 8px; font-size: 14px; cursor: pointer; text-decoration: none; }
.btn:hover { filter: brightness(0.95); }
.btn.secondary { background: #e2e8f0; color: var(--text); }
.btn.danger { background: var(--danger); }
.linkbtn { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 13px; text-decoration: underline; padding: 0; }

.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.cal-col { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; min-height: 120px; padding: 6px; }
.cal-head { font-size: 12px; font-weight: 600; color: var(--muted); text-align: center; padding: 4px 0; border-bottom: 1px solid var(--border); margin-bottom: 6px; }
.cal-head.today { color: var(--primary); }
.cal-event { display: block; font-size: 11px; padding: 5px 6px; margin-bottom: 4px; border-radius: 6px; text-decoration: none; color: var(--text); background: #eff6ff; border-left: 3px solid var(--primary); }
.cal-event.completed { background: #f0fdf4; border-left-color: #16a34a; }
.cal-event:hover { filter: brightness(0.97); }
.cal-empty { color: #cbd5e1; text-align: center; font-size: 12px; padding: 8px 0; }

.login-wrap { max-width: 380px; margin: 80px auto; }
.muted { color: var(--muted); font-size: 13px; }
.empty { text-align: center; color: var(--muted); padding: 40px; }