:root {
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-alt: #e6f0fe;
  --border: #d3e3fb;
  --text: #17253b;
  --text-muted: #5c6f85;
  --accent: #2f7bff;
  --accent-hover: #1f63e0;
  --accent-soft: rgba(47, 123, 255, 0.1);
  --danger: #d8384f;
  --success: #1a9c73;
  --radius: 0.75rem;
}

html {
  font-size: 16px;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: var(--accent-hover);
}

.btn-accent {
  background-color: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

.btn-accent:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #fff;
}

.btn-outline-accent {
  border: 1px solid var(--accent);
  color: var(--accent);
}

.btn-outline-accent:hover {
  background-color: var(--accent);
  color: #fff;
}

/* ---------- Admin layout ---------- */
.admin-body {
  background: var(--bg);
  color: var(--text);
}

.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  width: 100%;
  max-width: 380px;
}

.login-title {
  font-weight: 800;
  margin-bottom: 1.5rem;
  text-align: center;
}

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

.admin-sidebar {
  width: 240px;
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1rem;
}

.admin-brand {
  font-weight: 800;
  font-size: 1.15rem;
  padding: 0 0.5rem 1.5rem;
}

.admin-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex-grow: 1;
}

.admin-nav a {
  color: var(--text-muted);
  padding: 0.6rem 0.75rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.admin-nav a:hover {
  background: var(--surface-alt);
  color: var(--text);
}

.admin-nav a.active {
  background: var(--accent-soft);
  color: var(--accent);
}

.admin-logout-form {
  margin-top: 1rem;
}

.admin-logout-btn {
  width: 100%;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 0.5rem;
  padding: 0.6rem;
  font-weight: 600;
}

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

.admin-content {
  flex-grow: 1;
  min-width: 0;
}

.admin-page-title {
  font-weight: 800;
  margin-bottom: 1.5rem;
}

.admin-section-heading {
  font-weight: 700;
  font-size: 1.1rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.admin-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent);
}

.stat-label {
  color: var(--text-muted);
  font-weight: 600;
}

.admin-table {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  color: var(--text);
}

.admin-table thead {
  background: var(--surface-alt);
}

.admin-table th,
.admin-table td {
  border-color: var(--border) !important;
  color: var(--text);
  vertical-align: middle;
}

.badge-btn {
  border: none;
  border-radius: 999px;
  padding: 0.25rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 700;
}

.badge-published {
  background: rgba(56, 199, 147, 0.15);
  color: var(--success);
}

.badge-draft {
  background: rgba(151, 161, 176, 0.15);
  color: var(--text-muted);
}

/* ---------- Responsive ---------- */
@media (max-width: 991.98px) {
  .admin-layout {
    flex-direction: column;
  }

  .admin-sidebar {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .admin-nav {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

/* ---------- Global loading overlay (bkz. wwwroot/js/site.js: ShowLoading/HideLoading) ---------- */
.global-loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  background-color: rgba(23, 37, 59, 0.15);
}

.global-loading-overlay.is-visible {
  display: flex;
}

.global-loading-spinner {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.6);
  border-top-color: var(--accent, #2f7bff);
  animation: global-loading-spin 0.8s linear infinite;
}

@keyframes global-loading-spin {
  to {
    transform: rotate(360deg);
  }
}