:root {
  --brand: #00aeef;
  --brand-dark: #0088c7;
  --bg: #0f1419;
  --sidebar: #1a2332;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --ok: #059669;
  --warn: #d97706;
  --err: #dc2626;
}

* {
  box-sizing: border-box;
}

body.admin {
  margin: 0;
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: #f0f4f8;
  color: var(--text);
  min-height: 100vh;
}

.admin-shell {
  display: flex;
  min-height: 100vh;
}

.admin-sidebar {
  width: 260px;
  background: var(--sidebar);
  color: #e2e8f0;
  padding: 1.5rem 0;
  flex-shrink: 0;
}

.admin-sidebar__brand {
  padding: 0 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 1rem;
}

.admin-sidebar__brand strong {
  display: block;
  font-size: 1.05rem;
  color: #fff;
}

.admin-sidebar__brand span {
  font-size: 0.75rem;
  color: #94a3b8;
}

.admin-nav a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 1.25rem;
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.9rem;
  border-left: 3px solid transparent;
}

.admin-nav a:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.admin-nav a.active {
  background: rgba(0, 174, 239, 0.15);
  border-left-color: var(--brand);
  color: #fff;
}

.admin-main {
  flex: 1;
  padding: 1.5rem 2rem;
  overflow-x: auto;
}

.admin-topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.admin-topbar h1 {
  margin: 0;
  font-size: 1.5rem;
}

.admin-topbar p {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.card {
  background: var(--card);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--border);
}

.card h2 {
  margin: 0 0 1rem;
  font-size: 1.05rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.stat-card {
  background: var(--card);
  border-radius: 12px;
  padding: 1.1rem 1.25rem;
  border: 1px solid var(--border);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.stat-card strong {
  display: block;
  font-size: 1.75rem;
  color: var(--brand-dark);
}

.stat-card span {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.flash {
  padding: 0.85rem 1rem;
  border-radius: 10px;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.flash--ok {
  background: #ecfdf5;
  border: 1px solid #6ee7b7;
  color: #065f46;
}

.flash--err {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

.flash--code {
  background: #eff6ff;
  border: 1px solid #93c5fd;
  color: #1e3a8a;
  font-family: ui-monospace, monospace;
  font-size: 1.1rem;
  letter-spacing: 0.08em;
}

.table-wrap {
  overflow-x: auto;
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

table.data th,
table.data td {
  text-align: left;
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

table.data th {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  font-weight: 600;
}

table.data tr:hover td {
  background: #f9fafb;
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
}

.badge--ok {
  background: #d1fae5;
  color: #065f46;
}

.badge--off {
  background: #f3f4f6;
  color: #6b7280;
}

.badge--err {
  background: #fee2e2;
  color: #991b1b;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  text-decoration: none;
  background: var(--brand);
  color: #fff;
}

.btn:hover {
  background: var(--brand-dark);
}

.btn--ghost {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  background: #f9fafb;
}

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

.btn--sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.78rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.form-field label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--muted);
}

.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
}

.form-field textarea {
  min-height: 72px;
  resize: vertical;
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.module-grid label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.85rem;
  cursor: pointer;
}

.module-grid label:hover {
  border-color: var(--brand);
}

.module-grid input {
  margin-top: 0.15rem;
}

.mono {
  font-family: ui-monospace, 'SF Mono', monospace;
  font-size: 0.82rem;
  word-break: break-all;
}

.actions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a2332 0%, #0f1419 100%);
  padding: 1rem;
}

.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 2rem;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.login-card h1 {
  margin: 0 0 0.5rem;
  font-size: 1.35rem;
}

@media (max-width: 768px) {
  .admin-shell {
    flex-direction: column;
  }
  .admin-sidebar {
    width: 100%;
  }
  .admin-nav {
    display: flex;
    flex-wrap: wrap;
    padding: 0 0.5rem;
  }
  .admin-nav a {
    border-left: none;
    border-bottom: 2px solid transparent;
    padding: 0.5rem 0.75rem;
  }
}