:root {
  --bg: #f4f5f7;
  --card-bg: #ffffff;
  --text: #1f2430;
  --muted: #6b7280;
  --border: #e2e5ea;
  --brand: #2563eb;
  --brand-dark: #1d4ed8;
  --danger: #dc2626;
  --ok-bg: #dcfce7;
  --ok-text: #166534;
  --danger-bg: #fee2e2;
  --danger-text: #991b1b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
}

.container { max-width: 1200px; margin: 0 auto; padding: 24px 16px 48px; }

.topbar {
  background: #111827;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  flex-wrap: wrap;
  gap: 8px;
}
.topbar-brand { font-weight: 600; }
.topbar-nav { display: flex; align-items: center; gap: 16px; }
.topbar-nav a { color: #d1d5db; text-decoration: none; }
.topbar-nav a:hover { color: #fff; }
.topbar-user { color: #9ca3af; }

.link-button {
  background: none; border: none; color: #d1d5db; cursor: pointer; padding: 0; font: inherit;
}
.link-button:hover { color: #fff; text-decoration: underline; }

h1 { font-size: 20px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 12px; }

.page-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 16px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }

.muted { color: var(--muted); }

.card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 8px; padding: 16px; margin-bottom: 20px; }

.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.inline-add-form { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; align-items: center; }

.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 16px; }
.form-grid-full { grid-column: 1 / -1; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }

.label { display: block; font-weight: 500; margin-bottom: 4px; margin-top: 8px; }
.input {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px;
  background: #fff; color: var(--text); font: inherit;
}
.input-narrow { max-width: 90px; }
select.input { max-width: 220px; }

.btn-primary, .btn-secondary, .btn-danger {
  display: inline-block; padding: 8px 14px; border-radius: 6px; border: 1px solid transparent;
  font: inherit; cursor: pointer; text-decoration: none; text-align: center;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: #f3f4f6; }
.btn-danger { background: #fff; color: var(--danger); border-color: #fecaca; }
.btn-danger:hover { background: var(--danger-bg); }
.btn-xs { padding: 4px 8px; font-size: 12px; }

.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; background: #fff; }
.data-table th, .data-table td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
.data-table th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; background: #e5e7eb; color: #374151; font-size: 12px; margin: 1px; }
.badge-ok { background: var(--ok-bg); color: var(--ok-text); }
.badge-danger { background: var(--danger-bg); color: var(--danger-text); }

.alert { padding: 10px 14px; border-radius: 6px; margin: 12px 0; }
.alert-error { background: var(--danger-bg); color: var(--danger-text); }
.alert-warning { background: #fef3c7; color: #92400e; }

.temp-password { font-size: 18px; letter-spacing: 1px; }

/* Prompt 13: bang -> cards tren man hinh nho, uu tien thao tac nhanh (nut to, xep doc). */
.card-list { display: none; }
.org-card { background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: 12px; margin-bottom: 10px; }
.org-card-title { font-weight: 600; margin-bottom: 4px; }
.org-card-meta { color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.org-card-meta div { margin-bottom: 2px; }
.org-card .row-actions { margin-top: 8px; }
@media (max-width: 720px) {
  .data-table { display: none; }
  .card-list { display: block; }
}

.pagination { display: flex; gap: 6px; margin-top: 16px; }
.pagination a { padding: 4px 10px; border: 1px solid var(--border); border-radius: 6px; text-decoration: none; color: var(--text); }
.pagination a.page-current { background: var(--brand); color: #fff; border-color: var(--brand); }

.login-card { max-width: 360px; margin: 80px auto; background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: 24px; }
.login-card form { display: flex; flex-direction: column; }
.login-card .btn-primary { margin-top: 16px; }