:root{
  --color-bg:#f6f7fb;
  --color-surface:#ffffff;
  --color-text:#0f172a;
  --color-muted:#64748b;
  --color-border:#e5e7eb;
  --color-primary:#2563eb;
  --color-success:#166534;
  --color-warn:#9a3412;
  --color-danger:#b91c1c;

  --space-1:4px;
  --space-2:8px;
  --space-3:12px;
  --space-4:16px;
  --space-5:20px;

  --radius-sm:10px;
  --radius-md:12px;
  --radius-lg:16px;

  --shadow-sm:0 1px 2px rgba(0,0,0,.06);
  --shadow-md:0 10px 30px rgba(0,0,0,.12);

  --text-xs:12px;
  --text-sm:13px;
  --text-md:14px;
  --text-lg:16px;
  --text-xl:18px;

  --font-ui:"IBM Plex Sans Thai","Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;

  --z-base:1;
  --z-dropdown:900;
  --z-modal:1200;
  --z-toast:1400;
  --z-overlay-critical:1600;
}

.hidden,
.is-hidden{ display:none !important; pointer-events:none !important; }

body{ font-family:var(--font-ui); }

.btn{ border:1px solid var(--color-border); background:var(--color-surface); color:var(--color-text); border-radius:var(--radius-md); padding:10px 12px; cursor:pointer; font-size:var(--text-sm); font-weight:600; transition:all .15s ease; }
.btn:hover{ filter:brightness(.98); }
.btn:disabled{ opacity:.55; cursor:not-allowed; }
.btn.primary{ background:var(--color-primary); border-color:var(--color-primary); color:#fff; }
.btn.outline{ background:transparent; border-color:var(--color-primary); color:var(--color-primary); }
.btn.ghost{ background:transparent; border-color:transparent; }
.btn.danger{ background:var(--color-danger); border-color:var(--color-danger); color:#fff; }
.btn.small{ padding:7px 10px; font-size:12px; border-radius:10px; }
.btn.tiny{ padding:5px 8px; font-size:11px; border-radius:9px; }

.input{ width:100%; border:1px solid var(--color-border); border-radius:var(--radius-md); padding:10px 12px; background:#fff; color:var(--color-text); font-size:var(--text-md); outline:0; }
.input:focus{ border-color:var(--color-primary); box-shadow:0 0 0 3px rgba(37,99,235,.15); }

.card{ background:var(--color-surface); border:1px solid var(--color-border); border-radius:var(--radius-lg); box-shadow:var(--shadow-sm); padding:var(--space-4); }
.card-title{ font-weight:700; font-size:var(--text-lg); margin-bottom:var(--space-2); }

.table{ width:100%; border-collapse:collapse; background:#fff; border:1px solid var(--color-border); border-radius:var(--radius-md); overflow:hidden; }
.table th,.table td{ padding:10px 12px; border-bottom:1px solid var(--color-border); text-align:left; font-size:var(--text-sm); }
.table tbody tr:nth-child(even){ background:#fafbff; }

.badge{ display:inline-flex; align-items:center; padding:2px 8px; border-radius:999px; font-size:var(--text-xs); border:1px solid var(--color-border); background:#f8fafc; }
.badge.success{ color:var(--color-success); border-color:#bbf7d0; background:#f0fdf4; }
.badge.warn{ color:var(--color-warn); border-color:#fed7aa; background:#fff7ed; }
.badge.danger{ color:var(--color-danger); border-color:#fecaca; background:#fef2f2; }

.rx-empty,.rx-loading,.rx-error{ border:1px dashed var(--color-border); border-radius:var(--radius-md); background:#fff; padding:var(--space-5); text-align:center; color:var(--color-muted); }
.rx-empty-title{ color:var(--color-text); font-weight:700; margin-bottom:6px; }
.rx-empty-sub{ font-size:var(--text-sm); }

.rx-skeleton{ display:block; border-radius:10px; background:linear-gradient(90deg,#eef2ff 25%,#e2e8f0 37%,#eef2ff 63%); background-size:400% 100%; animation:rxShimmer 1.2s ease infinite; }
.rx-skeleton.line{ height:12px; margin:8px 0; }
.rx-skeleton.title{ height:20px; width:40%; margin:10px auto; }
.rx-skeleton.block{ height:80px; width:100%; margin:8px 0; }
@keyframes rxShimmer{ 0%{background-position:100% 0;}100%{background-position:0 0;} }

.rx-error{ border-color:#fecaca; background:#fff7f7; color:#7f1d1d; text-align:left; }
.rx-error-actions{ display:flex; gap:8px; margin-top:10px; flex-wrap:wrap; }
.rx-error-details{ margin-top:10px; font-size:var(--text-xs); }

.rx-backdrop{ position:fixed; inset:0; background:rgba(17,24,39,.42); z-index:var(--z-modal); }
.rx-modal{ position:fixed; inset:0; display:flex; align-items:center; justify-content:center; background:rgba(17,24,39,.42); padding:16px; z-index:var(--z-modal); }
.rx-modal-card{ width:min(560px,92vw); background:#fff; border:1px solid var(--color-border); border-radius:var(--radius-lg); box-shadow:var(--shadow-md); padding:var(--space-4); }

.rx-busy-overlay{ position:fixed; inset:0; display:flex; align-items:center; justify-content:center; background:rgba(255,255,255,.6); z-index:var(--z-overlay-critical); }

.toast-host{ position:fixed; right:16px; bottom:16px; z-index:var(--z-toast); display:flex; flex-direction:column; gap:8px; pointer-events:none; }
.toast{ pointer-events:auto; cursor:pointer; max-width:420px; border-radius:12px; padding:10px 12px; box-shadow:var(--shadow-md); color:#fff; background:#111827; font-size:var(--text-sm); }
.toast-success{ background:#0b6b3a; }
.toast-warn{ background:#9a3412; }
.toast-error{ background:#991b1b; }