/* Token + primitive UI dùng chung. Class .erg-* để không đụng .card/.btn từng trang. */
:root {
  --brand: #2e338a;
  --brand-2: #1e2375;
  --accent: #a4cd39;
  --accent-ink: #3f6b12;
  --danger: #ef4444;
  --danger-ink: #b91c1c;
  --success: #065f46;
  --bg: #f8fafc;
  /* #9bcb3b + ~20% trắng — cùng lime logo, nhạt hơn một chút */
  --page-bg: #afd562;
  --bg-card: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e6eaf2;
  --border-strong: #cbd5e1;
  --card-border: rgba(15, 23, 42, 0.07);
  --surface-soft: #f1f5f9;
  --pill: 999px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 6px 18px rgba(15, 23, 42, 0.10);
  --ease: cubic-bezier(.2, .7, .2, 1);
  --control-h: 42px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --focus-ring: 0 0 0 3px rgba(46, 51, 138, 0.18);
}

.erg-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: var(--control-h);
  padding: 0 16px;
  border: none;
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  box-sizing: border-box;
  transition: background .15s var(--ease), transform .15s var(--ease), box-shadow .15s var(--ease);
}
.erg-btn:hover { text-decoration: none; }
.erg-btn:active { transform: translateY(1px) scale(.99); }
.erg-btn:disabled, .erg-btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }
.erg-btn-primary { background: var(--brand); color: #fff; box-shadow: 0 1px 2px rgba(30, 35, 117, .25); }
.erg-btn-primary:hover { background: var(--brand-2); color: #fff; box-shadow: 0 4px 12px rgba(30, 35, 117, .25); }
.erg-btn-accent { background: var(--accent); color: var(--accent-ink); }
.erg-btn-accent:hover { filter: brightness(.96); }
.erg-btn-muted { background: var(--surface-soft); color: var(--brand-2); }
.erg-btn-muted:hover { background: #e6ebf3; }
.erg-btn-danger { background: var(--danger); color: #fff; }
.erg-btn-danger:hover { background: var(--danger-ink); }

/* Focus rõ cho bàn phím, không hiện khi bấm chuột/chạm */
:where(a, button, input, select, textarea, summary):focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.erg-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.erg-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.erg-table th,
.erg-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.erg-table th {
  background: #f8fafc;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: .02em;
}

.erg-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  background: var(--bg-card);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
}
.erg-empty strong {
  display: block;
  color: var(--text);
  font-size: 15px;
  margin-bottom: 6px;
}

.erg-page-title {
  margin: 0 0 20px;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text);
  line-height: 1.25;
}

.erg-input,
.erg-select {
  width: 100%;
  height: var(--control-h);
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 14px;
  background: var(--bg-card);
  color: var(--text);
  box-sizing: border-box;
}
.erg-input:focus,
.erg-select:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: var(--focus-ring);
}

body.erg-authed { background: var(--page-bg); }

.post-card,
.erg-card {
  background: var(--bg-card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 20px 22px;
  transition: box-shadow .2s var(--ease);
}

.erg-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 0 0 16px;
}
.erg-toolbar input[type="text"],
.erg-toolbar input[type="search"] {
  padding: 10px 12px;
  height: var(--control-h);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  min-width: 200px;
  font: inherit;
  background: #fff;
}
.erg-toolbar button {
  height: var(--control-h);
  padding: 0 14px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--brand);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}
.erg-toolbar a { font-weight: 600; }

.erg-table { background: #fff; }
.erg-table tbody tr:hover { background: #f8fafc; }

@media (max-width: 640px) {
  .erg-toolbar input[type="text"],
  .erg-toolbar input[type="search"] {
    flex: 1 1 100%;
    min-width: 0;
  }
  .erg-page-title { font-size: 20px; }
  .post-card { -webkit-overflow-scrolling: touch; }
  .erg-table { min-width: 520px; }

  /* Bảng tràn ngang → dạng thẻ (class .m-stack do js/erg-mobile-tables.js gắn) */
  table.m-stack, table.m-stack tbody, table.m-stack tr, table.m-stack td { display: block; width: 100%; min-width: 0 !important; box-sizing: border-box; }
  table.m-stack thead { display: none; }
  table.m-stack tr { border: 1px solid var(--card-border); border-radius: 12px; padding: 6px 12px; margin: 10px; width: auto; background: #fff; box-shadow: 0 1px 2px rgba(15, 23, 42, .05); }
  table.m-stack td { position: relative; padding: 6px 0 6px 36% !important; border: 0 !important; text-align: left !important; white-space: normal; overflow-wrap: anywhere; background: transparent !important; min-height: 28px; }
  table.m-stack td[data-label]::before { content: attr(data-label); position: absolute; left: 0; top: 8px; width: 32%; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .03em; color: var(--text-muted); }
  table.m-stack td:empty { display: none; }
  table.m-stack td[colspan] { padding-left: 0 !important; }
  table.m-stack .row-actions { flex-wrap: wrap; justify-content: flex-start; }
  body.erg-authed main input[type="checkbox"], body.erg-authed main input[type="radio"] { width: auto; flex: none; }
  .erg-tabbar:has(.is-open) .erg-tab.is-active:not(.is-open) { color: var(--text-muted); }
  .erg-tabbar:has(.is-open) .erg-tab.is-active:not(.is-open)::before { display: none; }

  /* iOS Safari tự phóng to trang khi focus ô nhập có chữ < 16px → giữ 16px trên mobile */
  body.erg-authed main input:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="file"]):not([type="hidden"]),
  body.erg-authed main select,
  body.erg-authed main textarea { font-size: 16px !important; }
  /* Vùng chạm tối thiểu cho nút nhỏ (trừ nút icon vuông trong .row-actions) */
  body.erg-authed main :is(.btn, .btn-sm, .btn-tool, .btn-ghost, .btn-action, .erg-btn):not(.row-actions *) { min-height: 38px; }
  body.erg-authed main a.back-to-manage { display: inline-flex; align-items: center; min-height: 40px; }
}

/* ===== Lớp đồng bộ giao diện cho mọi trang đã đăng nhập (mỗi trang vẫn giữ layout riêng) ===== */
body.erg-authed main .card:not(:hover),
body.erg-authed main .filter:not(:hover) {
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
body.erg-authed main .card { border-radius: var(--radius); }
body.erg-authed main .modal-content { border-radius: 18px; }
/* Tiêu đề thẻ ở các trang quản lý: cùng gradient với header */
body.erg-authed main .card-title,
body.erg-authed main .card > h2 {
  background-image: linear-gradient(135deg, var(--brand), var(--brand-2));
  letter-spacing: .01em;
}
body.erg-authed main .btn,
body.erg-authed main .btn-create,
body.erg-authed main .btn-ghost,
body.erg-authed main .btn-action {
  border-radius: var(--radius-sm);
  transition: background .15s var(--ease), border-color .15s var(--ease), transform .15s var(--ease), box-shadow .15s var(--ease);
}
body.erg-authed main .btn:active,
body.erg-authed main .btn-create:active,
body.erg-authed main .btn-ghost:active { transform: translateY(1px); }
body.erg-authed main .btn-primary,
body.erg-authed main .btn-create { box-shadow: 0 1px 2px rgba(30, 35, 117, .25); }
body.erg-authed main .btn-primary:hover,
body.erg-authed main .btn-create:hover { box-shadow: 0 4px 12px rgba(30, 35, 117, .25); }
body.erg-authed main input:not([type="checkbox"]):not([type="radio"]):not([type="hidden"]):not([type="file"]):not([type="range"]),
body.erg-authed main select,
body.erg-authed main textarea {
  border-radius: var(--radius-sm);
  transition: border-color .15s var(--ease), box-shadow .15s var(--ease);
}
body.erg-authed main input:focus,
body.erg-authed main select:focus,
body.erg-authed main textarea:focus {
  border-color: var(--brand);
  box-shadow: var(--focus-ring);
  outline: none;
}
body.erg-authed main tbody tr:hover td { background: #f8fafc; }