:root {
  --bg: #f3f4f6;
  --surface: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;

  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --danger: #b91c1c;
  --danger-hover: #991b1b;
  --success: #166534;

  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 10px;

  --shadow-sm: 0 8px 20px rgba(17, 24, 39, 0.06);
  --shadow-md: 0 16px 40px rgba(17, 24, 39, 0.10);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

button,
input,
a {
  font: inherit;
}

.hidden {
  display: none !important;
}

/* Écrans centrés */
.center-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at top right, rgba(29, 78, 216, 0.06), transparent 30%),
    linear-gradient(180deg, #f9fafb 0%, #eef2f7 100%);
}

.card {
  width: min(100%, 420px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 28px;
  text-align: center;
}

.card h1 {
  margin-bottom: 10px;
  font-size: 1.5rem;
}

.card p {
  color: var(--muted);
  line-height: 1.5;
  margin-bottom: 18px;
}

/* Header admin */
.admin-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 4px 18px rgba(17, 24, 39, 0.04);
}

.admin-header h1 {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.admin-subtitle {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.875rem;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Layout */
main {
  width: min(100%, 1280px);
  margin: 0 auto;
  padding: 20px;
  display: grid;
  gap: 18px;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  box-shadow: var(--shadow-sm);
}

.stat-label {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 6px;
}

.stat-card strong {
  font-size: 1.35rem;
}

/* Panel */
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
  background: #fafafa;
  border-bottom: 1px solid var(--line);
}

.tab {
  border: 1px solid var(--line);
  background: #ffffff;
  color: #374151;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.tab:hover {
  background: #f9fafb;
}

.tab.active {
  background: #111827;
  border-color: #111827;
  color: #ffffff;
}

.tab-panel {
  padding: 16px;
  display: grid;
  gap: 14px;
}

/* Toolbar */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.toolbar input[type="search"],
.toolbar input[type="text"] {
  flex: 1;
  min-width: 220px;
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: var(--radius-sm);
  outline: none;
}

.toolbar input[type="search"]:focus,
.toolbar input[type="text"]:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(29, 78, 216, 0.10);
}

/* Table */
.table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 900px;
}

th,
td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
  font-size: 0.92rem;
}

th {
  background: #f9fafb;
  color: #374151;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

tbody tr:hover {
  background: #f9fafb;
}

tr:last-child td {
  border-bottom: none;
}

.checkbox-col {
  width: 44px;
}

.content-cell {
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.avatar-small {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--line);
  background: #e5e7eb;
}

.avatar-placeholder {
  display: inline-block;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: #e5e7eb;
  border: 1px solid var(--line);
}

.empty-row {
  text-align: center;
  color: var(--muted);
  padding: 24px;
}

/* Boutons */
.btn-primary,
.btn-secondary,
.btn-danger,
.btn-danger-outline,
.btn-mini-danger,
.btn-mini-secondary {
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 700;
  transition:
    background 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease,
    transform 0.15s ease,
    opacity 0.18s ease;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: #ffffff;
  border: 1px solid var(--primary);
  padding: 10px 12px;
  text-decoration: none;
}

.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #ffffff;
  color: #374151;
  border: 1px solid #d1d5db;
  padding: 10px 12px;
  text-decoration: none;
}

.btn-secondary:hover {
  background: #f9fafb;
  border-color: #9ca3af;
}

.btn-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--danger);
  color: #ffffff;
  border: 1px solid var(--danger);
  padding: 10px 12px;
}

.btn-danger:hover {
  background: var(--danger-hover);
  border-color: var(--danger-hover);
}

.btn-danger-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #ffffff;
  color: var(--danger);
  border: 1px solid #fecaca;
  padding: 10px 12px;
}

.btn-danger-outline:hover {
  background: #fef2f2;
  border-color: #fca5a5;
}

.btn-mini-danger {
  background: var(--danger);
  color: #ffffff;
  border: none;
  padding: 6px 9px;
  font-size: 0.8rem;
}

.btn-mini-danger:hover {
  background: var(--danger-hover);
}

.btn-mini-secondary {
  background: #ffffff;
  border: 1px solid #d1d5db;
  color: #374151;
  padding: 6px 9px;
  font-size: 0.8rem;
}

.btn-mini-secondary:hover {
  background: #f9fafb;
}

button:disabled,
.btn-primary:disabled,
.btn-secondary:disabled,
.btn-danger:disabled,
.btn-danger-outline:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.btn-primary:active,
.btn-secondary:active,
.btn-danger:active,
.btn-danger-outline:active,
.btn-mini-danger:active,
.btn-mini-secondary:active {
  transform: scale(0.98);
}

/* Status */
.status-box {
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-weight: 600;
}

.status-box.success {
  background: #f0fdf4;
  border-color: #bbf7d0;
  color: var(--success);
}

.status-box.error {
  background: #fef2f2;
  border-color: #fecaca;
  color: var(--danger);
}

.status-box.info {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: var(--primary);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  border: 1px solid transparent;
}

.badge-danger {
  background: #fef2f2;
  border-color: #fecaca;
  color: #b91c1c;
}

.badge-success {
  background: #f0fdf4;
  border-color: #bbf7d0;
  color: #166534;
}

.muted {
  color: #6b7280;
}

/* Maintenance */
.maintenance-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.maintenance-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px;
  background: #ffffff;
}

.maintenance-card h2 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.maintenance-card p {
  color: var(--muted);
  line-height: 1.5;
  margin-bottom: 14px;
}

/* Responsive */
@media (max-width: 980px) {
  .stats-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .maintenance-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .admin-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  main {
    padding: 14px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}