:root {
  --primary: #0f3460;
  --primary-light: #16549c;
  --accent: #e94560;
  --bg: #f4f6fb;
  --card: #ffffff;
  --text: #1a1a2e;
  --muted: #6b7280;
  --border: #e2e6ef;
  --ok: #16a34a;
  --err: #dc2626;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Sarabun', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
}

header#topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 10px 24px;
  background: var(--primary);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { font-weight: 700; font-size: 17px; }
#nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
#nav a {
  color: #cdd8ea;
  text-decoration: none;
  padding: 7px 14px;
  border-radius: 8px;
  font-weight: 500;
}
#nav a.active, #nav a:hover { background: var(--primary-light); color: #fff; }
.userbox { display: flex; align-items: center; gap: 10px; }
.userbox img { width: 30px; height: 30px; border-radius: 50%; background: #ccc; }

main { max-width: 1200px; margin: 24px auto; padding: 0 16px 64px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 20px;
}
.card h2 { margin: 0 0 4px; font-size: 20px; color: var(--primary); }
.card h3 { margin: 0 0 12px; font-size: 16px; color: var(--primary); }

.login-box { max-width: 420px; margin: 12vh auto; text-align: center; }
.login-box h1 { color: var(--primary); }

.btn {
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  padding: 10px 20px;
  cursor: pointer;
  background: var(--primary);
  color: #fff;
}
.btn:hover { background: var(--primary-light); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-ghost { background: transparent; border: 1px solid rgba(255,255,255,.4); padding: 6px 12px; font-size: 13px; }
.btn-ghost:hover { background: rgba(255,255,255,.12); }
.btn-sm { padding: 5px 10px; font-size: 13px; }
.btn-danger { background: var(--err); }
.btn-secondary { background: #fff; color: var(--primary); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg); }

.section-title {
  margin: 26px 0 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  border-bottom: 2px solid var(--border);
  padding-bottom: 6px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px 18px;
}
.field label { display: block; font-weight: 600; margin-bottom: 4px; font-size: 14px; }
.field label .req { color: var(--err); }
.field input, .field select, .field textarea {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}
.field input:focus, .field select:focus { outline: 2px solid var(--primary-light); border-color: transparent; }
.field input[readonly] { background: #eef2f9; font-weight: 700; color: var(--primary); }
.field .radio-group { display: flex; gap: 16px; padding: 8px 0; }
.field .radio-group label { font-weight: 400; display: flex; align-items: center; gap: 6px; margin: 0; }
.field .err-msg { color: var(--err); font-size: 13px; margin-top: 3px; min-height: 0; }
.field.invalid input, .field.invalid select { border-color: var(--err); }

.form-actions { margin-top: 24px; display: flex; gap: 12px; }

.banner { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-weight: 600; }
.banner.ok { background: #dcfce7; color: #14532d; }
.banner.err { background: #fee2e2; color: #7f1d1d; }

.filters { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 16px; }
.filters .field { min-width: 140px; }
.filters .field label { font-size: 13px; }

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: #fff;
}
table.data th, table.data td {
  border: 1px solid var(--border);
  padding: 7px 10px;
  text-align: left;
  white-space: nowrap;
}
table.data th { background: #eef2f9; cursor: pointer; user-select: none; }
table.data th .arrow { color: var(--accent); }
table.data tr:hover td { background: #f8fafd; }
.table-wrap { overflow-x: auto; border-radius: 8px; }
.num { text-align: right !important; font-variant-numeric: tabular-nums; }

.pagination { display: flex; gap: 8px; align-items: center; margin-top: 14px; flex-wrap: wrap; }
.pagination .spacer { flex: 1; }

.cards-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.stat-card .label { color: var(--muted); font-size: 13px; font-weight: 600; }
.stat-card .value { font-size: 24px; font-weight: 700; color: var(--primary); margin: 4px 0; }
.stat-card .delta { font-size: 13px; font-weight: 600; }
.delta.up { color: var(--ok); }
.delta.down { color: var(--err); }
.delta.flat { color: var(--muted); }

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 16px;
}
.chart-box { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.chart-box h3 { margin: 0 0 10px; font-size: 15px; color: var(--primary); }
.chart-box canvas { max-height: 280px; }

#modal-root:not(:empty) {
  position: fixed; inset: 0;
  background: rgba(15, 22, 46, .55);
  display: flex; align-items: flex-start; justify-content: center;
  overflow-y: auto; z-index: 50; padding: 4vh 16px;
}
.modal {
  background: #fff; border-radius: var(--radius);
  width: min(900px, 100%); padding: 24px; margin-bottom: 4vh;
}
.modal h2 { margin-top: 0; color: var(--primary); }

#toast-root { position: fixed; bottom: 20px; right: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 99; }
.toast { background: var(--text); color: #fff; padding: 10px 18px; border-radius: 8px; font-weight: 500; }
.toast.ok { background: var(--ok); }
.toast.err { background: var(--err); }

.muted { color: var(--muted); }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.badge.admin { background: #ffe4e6; color: #9f1239; }
.badge.user { background: #e0f2fe; color: #075985; }
.badge.synced, .badge.sent, .badge.active { background: #dcfce7; color: #14532d; }
.badge.cancelled { background: #fee2e2; color: #7f1d1d; }
.badge.pending { background: #fef9c3; color: #713f12; }
.badge.failed { background: #fee2e2; color: #7f1d1d; }