/**
 * TỨ PHỦ Admin — shell lấy cấu trúc Product DS (asolution),
 * token màu theo brand Tứ phủ (đỏ thẫm / vàng đồng / giấy).
 */

:root,
[data-theme="dark"] {
  --ds-bg: #190f12;
  --ds-surface: #2a1a1c;
  --ds-elev: #352326;
  --ds-line: rgba(98, 68, 60, 0.55);
  --ds-strong: #62443c;
  --ds-text: #f4e6d1;
  --ds-secondary: #d5ba99;
  --ds-muted: #b89a7a;
  --ds-dim: #8a6e5c;
  --ds-inverse: #190f12;
  --ds-accent: #c49a59;
  --ds-accent-fg: #190f12;
  --ds-accent-soft: #e4c58c;
  --ds-primary: #742b32;
  --ds-primary-hover: #913c43;
  --ds-danger: #e57373;
  --ds-danger-bg: #2a1214;
  --ds-success: #a8d5a2;
  --ds-success-bg: #1a2a1c;
  --ds-warn: #e4c58c;
  --ds-warn-bg: #2a2214;
  --ds-info: #c4b59a;
  --ds-info-bg: #241e18;
  --ds-shadow: none;
  --ds-shadow-md: 0 8px 28px rgba(0, 0, 0, 0.35);
  --ds-overlay: rgba(12, 6, 8, 0.62);

  /* legacy aliases used by feature blades */
  --bg-dark: var(--ds-bg);
  --surface-dark: var(--ds-surface);
  --surface-elevated: var(--ds-elev);
  --primary: var(--ds-primary);
  --primary-hover: var(--ds-primary-hover);
  --gold: var(--ds-accent);
  --gold-light: var(--ds-accent-soft);
  --text-light: var(--ds-text);
  --text-muted: var(--ds-secondary);
  --border-dark: var(--ds-strong);
  --header-h: 56px;
  --sidebar-w: 248px;
}

:root {
  --ds-sidebar-w: 248px;
  --ds-sidebar-w-collapsed: 68px;
  --ds-header-h: 56px;
  --ds-radius: 4px;
  --ds-radius-md: 8px;
  --ds-font: "Be Vietnam Pro", system-ui, sans-serif;
  --ds-display: "Noto Serif", Georgia, serif;
  --ds-mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

.ds-body,
body.admin-body {
  margin: 0;
  min-height: 100vh;
  background: var(--ds-bg);
  color: var(--ds-text);
  font-family: var(--ds-font);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.ds-body:has(.ds-app) {
  height: 100vh;
  overflow: hidden;
}

/* —— App shell —— */
.ds-app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.ds-backdrop {
  position: fixed;
  inset: 0;
  z-index: 45;
  background: var(--ds-overlay);
}
.ds-backdrop[hidden] { display: none !important; }

.ds-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 50;
  width: var(--ds-sidebar-w);
  display: flex;
  flex-direction: column;
  background: var(--ds-surface);
  border-right: 1px solid var(--ds-line);
  transition: width 0.18s ease, transform 0.18s ease;
}

.ds-body.is-sidebar-collapsed .ds-sidebar { width: var(--ds-sidebar-w-collapsed); }
.ds-body.is-sidebar-collapsed .ds-nav-label,
.ds-body.is-sidebar-collapsed .ds-nav-text,
.ds-body.is-sidebar-collapsed .ds-nav-badge,
.ds-body.is-sidebar-collapsed .ds-brand-text,
.ds-body.is-sidebar-collapsed .ds-sidebar-foot-meta {
  display: none;
}
.ds-body.is-sidebar-collapsed .ds-nav-link {
  justify-content: center;
  padding-left: 0;
  padding-right: 0;
}
.ds-body.is-sidebar-collapsed .ds-brand {
  justify-content: center;
  padding-left: 0;
  padding-right: 0;
}

.ds-brand {
  height: var(--ds-header-h);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  border-bottom: 1px solid var(--ds-line);
  text-decoration: none;
  color: var(--ds-text);
  flex-shrink: 0;
}
.ds-brand-mark {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ds-accent);
  color: var(--ds-accent-fg);
  font-family: var(--ds-display);
  font-size: 11px;
  font-weight: 700;
  border-radius: var(--ds-radius);
  flex-shrink: 0;
}
.ds-brand-text {
  font: 500 10px/1.25 var(--ds-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.ds-brand-text span { color: var(--ds-accent); }

.ds-nav {
  flex: 1;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 12px 10px 20px;
  scrollbar-width: none;
}
.ds-nav::-webkit-scrollbar {
  width: 0;
  height: 0;
  display: none;
}
.ds-nav-group { margin-top: 14px; }
.ds-nav-group:first-child { margin-top: 4px; }
.ds-nav-label {
  padding: 6px 10px 8px;
  font: 500 9px/1 var(--ds-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ds-dim);
}
.ds-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  margin-bottom: 2px;
  border: 1px solid transparent;
  border-radius: var(--ds-radius);
  color: var(--ds-secondary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
}
.ds-nav-link:hover {
  color: var(--ds-text);
  background: var(--ds-elev);
  border-color: var(--ds-line);
}
.ds-nav-link.is-active {
  color: var(--ds-text);
  background: var(--ds-elev);
  border-color: var(--ds-strong);
  box-shadow: inset 2px 0 0 var(--ds-accent);
}
.ds-nav-ico,
.ds-icon-btn svg,
.ds-nav-link svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.85;
  stroke: currentColor;
  fill: none;
}
.ds-nav-link.is-active .ds-nav-ico,
.ds-nav-link.is-active svg { color: var(--ds-accent); opacity: 1; }
.ds-nav-badge {
  margin-left: auto;
  font: 500 9px/1 var(--ds-mono);
  border: 1px solid var(--ds-line);
  padding: 3px 5px;
  color: var(--ds-muted);
}

.ds-sidebar-foot {
  border-top: 1px solid var(--ds-line);
  padding: 12px 14px;
  flex-shrink: 0;
}
.ds-sidebar-foot-name { font-size: 13px; font-weight: 600; }
.ds-sidebar-foot-meta {
  margin-top: 2px;
  font: 400 10px/1.3 var(--ds-mono);
  color: var(--ds-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.ds-maincol {
  flex: 1;
  min-width: 0;
  margin-left: var(--ds-sidebar-w);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  transition: margin-left 0.18s ease;
}
.ds-body.is-sidebar-collapsed .ds-maincol {
  margin-left: var(--ds-sidebar-w-collapsed);
}

.ds-header {
  position: relative;
  z-index: 40;
  flex-shrink: 0;
  height: var(--ds-header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 1.5rem;
  background: var(--ds-bg);
  border-bottom: 1px solid var(--ds-line);
}
.ds-header-left,
.ds-header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.ds-icon-btn {
  width: 36px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ds-strong);
  border-radius: var(--ds-radius);
  background: transparent;
  color: var(--ds-secondary);
  cursor: pointer;
}
.ds-icon-btn:hover {
  color: var(--ds-text);
  border-color: var(--ds-accent);
}
.ds-page-title {
  margin: 0;
  font-family: var(--ds-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ds-crumb {
  margin: 0.1rem 0 0;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ds-muted);
}

.ds-content,
.admin-content {
  flex: 1;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 1.5rem 1.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  scrollbar-width: none;
}
.ds-content::-webkit-scrollbar,
.admin-content::-webkit-scrollbar {
  width: 0;
  height: 0;
  display: none;
}

.ds-footer {
  flex-shrink: 0;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.5rem;
  border-top: 1px solid var(--ds-line);
  font: 400 10px/1.4 var(--ds-mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ds-dim);
}
.ds-footer span span { color: var(--ds-accent); }

.ds-flash {
  flex-shrink: 0;
  margin: 0.75rem 1.5rem 0;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--ds-line);
  border-radius: var(--ds-radius);
  background: var(--ds-elev);
  color: var(--ds-secondary);
  font-size: 13px;
}

/* Guest / login */
.ds-guest {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  background:
    radial-gradient(ellipse at top, rgba(116, 43, 50, 0.28), transparent 55%),
    var(--ds-bg);
}
.ds-guest-card {
  width: min(100%, 420px);
  border: 1px solid var(--ds-line);
  border-radius: var(--ds-radius-md);
  background: rgba(42, 26, 28, 0.95);
  padding: 1.35rem 1.25rem;
  box-shadow: var(--ds-shadow-md);
}

/* —— Feature primitives (compat admin-*) —— */
.admin-shell { display: contents; }
.admin-sidebar { display: none; }
.admin-main { display: contents; }
.admin-topbar { display: none; }

.admin-card {
  border: 1px solid var(--ds-line);
  border-radius: var(--ds-radius-md);
  background: var(--ds-surface);
  padding: 1.25rem 1.35rem;
}
.admin-card > .admin-section-title,
.admin-card > h2 {
  margin: 0 0 0.85rem;
}
.admin-grid {
  display: grid;
  gap: 1rem;
  align-items: start;
}
@media (min-width: 768px) {
  .admin-grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .admin-grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.admin-stat-num {
  font-family: var(--ds-display);
  font-size: 1.75rem;
  color: var(--ds-accent-soft);
}
.admin-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-height: 2.4rem;
  padding: 0.4rem 0.9rem;
  border-radius: var(--ds-radius);
  border: 1px solid var(--ds-line);
  background: var(--ds-elev);
  color: var(--ds-text);
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: none;
}
.admin-btn:hover { border-color: var(--ds-accent); }
.admin-btn.is-primary {
  background: var(--ds-primary);
  border-color: transparent;
}
.admin-btn.is-primary:hover { background: var(--ds-primary-hover); }
.admin-input {
  width: 100%;
  border-radius: var(--ds-radius);
  border: 1px solid var(--ds-line);
  background: var(--ds-bg);
  color: var(--ds-text);
  padding: 0.65rem 0.75rem;
  font: inherit;
}
.admin-input:focus {
  outline: none;
  border-color: var(--ds-accent);
}
.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.admin-table th,
.admin-table td {
  text-align: left;
  padding: 0.55rem 0.4rem;
  border-bottom: 1px solid var(--ds-line);
  color: var(--ds-secondary);
}
.admin-table th {
  color: var(--ds-accent-soft);
  font-weight: 500;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.admin-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}
.admin-toolbar + .admin-grid,
.admin-toolbar + .admin-card {
  margin-top: 0;
}
.admin-table-wrap {
  margin-top: 0.25rem;
  overflow: auto;
  scrollbar-width: thin;
}
.admin-section-title {
  margin: 0;
  font-family: var(--ds-display);
  font-size: 1.1rem;
}
.admin-form { display: grid; gap: 0.65rem; }
.admin-form label {
  display: grid;
  gap: 0.3rem;
  font-size: 0.8rem;
  color: var(--ds-secondary);
}
.admin-form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.35rem;
}
.admin-toast {
  position: fixed;
  left: 50%;
  bottom: 1.25rem;
  transform: translateX(-50%) translateY(120%);
  z-index: 80;
  border-radius: var(--ds-radius-md);
  border: 1px solid var(--ds-line);
  background: var(--ds-surface);
  color: var(--ds-text);
  padding: 0.7rem 1rem;
  opacity: 0;
  transition: 0.2s ease;
}
.admin-toast.is-open {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}
.admin-login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.admin-login-card { width: min(100%, 420px); }

@media (max-width: 960px) {
  .ds-sidebar {
    transform: translateX(-105%);
  }
  .ds-body.is-nav-open .ds-sidebar {
    transform: translateX(0);
  }
  .ds-maincol { margin-left: 0 !important; }
  .ds-content,
  .admin-content {
    padding: 1.15rem 1.15rem 1.5rem;
  }
  .admin-card {
    padding: 1.1rem 1.15rem;
  }
}