/* ── Rinkea Admin Panel — enhanced with VFX, animations, glass UI ────── */

@import url('https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,400;14..32,500;14..32,600;14..32,700;14..32,800&display=swap');

:root {
  --bg: #f5f6fa;
  --surface: #fff;
  --sidebar-bg: #1a1d29;
  --sidebar-text: #a4a9b8;
  --sidebar-active: #fff;
  --sidebar-hover: #2a2d3a;
  --text: #1a1d29;
  --subtext: #6b7280;
  --border: #e5e7eb;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --danger: #ef4444;
  --success: #22c55e;
  --warn: #f59e0b;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(229, 231, 235, 0.5);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(2deg); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.fade-in { animation: fadeIn 0.35s ease-out both; }
.slide-up { animation: slideUp 0.4s ease-out both; }
.fade-in-delay-1 { animation-delay: 0.05s; }
.fade-in-delay-2 { animation-delay: 0.1s; }
.fade-in-delay-3 { animation-delay: 0.15s; }
.fade-in-delay-4 { animation-delay: 0.2s; }

/* ── Layout ─────────────────────────────────────────────────────────────── */
.app { display: flex; min-height: 100vh; }

/* ── Sidebar with glass effect ──────────────────────────────────────────── */
.sidebar {
  width: 240px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: 100;
  overflow-y: auto;
  transition: transform var(--transition-slow);
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 99px; }

.sidebar-brand {
  padding: 20px 20px 12px;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.3px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar-brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1, #a78bfa);
  box-shadow: 0 0 12px rgba(99,102,241,0.5);
  -webkit-text-fill-color: initial;
  flex-shrink: 0;
}

.sidebar-nav { padding: 8px 0 24px; }
.nav-group {
  padding: 20px 20px 6px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #5a5f75;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--sidebar-text);
  text-decoration: none;
  transition: all var(--transition);
  border-left: 3px solid transparent;
  position: relative;
}
.nav-item:hover { background: var(--sidebar-hover); color: #d0d5e0; }
.nav-item.active {
  color: var(--sidebar-active);
  background: var(--sidebar-hover);
  border-left-color: var(--accent);
}
.nav-item .nav-icon { width: 18px; text-align: center; font-size: 15px; flex-shrink: 0; opacity: 0.7; }
.nav-item.active .nav-icon { opacity: 1; }
.nav-item .nav-badge {
  margin-left: auto;
  padding: 1px 7px;
  font-size: 10px;
  font-weight: 700;
  border-radius: 99px;
  background: rgba(245,158,11,0.15);
  color: var(--warn);
  line-height: 1.4;
}

/* ── Main ───────────────────────────────────────────────────────────────── */
.main { margin-left: 240px; flex: 1; min-width: 0; display: flex; flex-direction: column; }
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(17, 24, 39, 0.48);
  backdrop-filter: blur(3px);
}

/* ── Topbar with glass effect ────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  padding: 12px 24px;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 50;
}
.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--text);
  padding: 4px;
  transition: opacity var(--transition);
}
.sidebar-toggle:hover { opacity: 0.7; }
.topbar-title { flex: 1; font-size: 16px; font-weight: 600; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.topbar-user {
  font-size: 13px;
  color: var(--subtext);
  padding: 4px 12px;
  background: var(--bg);
  border-radius: 20px;
}

/* ── Content area with fade-in ───────────────────────────────────────────── */
.content {
  padding: 24px;
  flex: 1;
  animation: fadeIn 0.3s ease-out;
}

/* ── Cards with hover elevation ──────────────────────────────────────────── */
.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 20px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.card-header h3 { font-size: 15px; font-weight: 600; }

/* ── Stats with hover effect ─────────────────────────────────────────────── */
.stat-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 20px;
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--transition);
}
.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.stat-card:hover::before { opacity: 1; }
.stat-card.warn { border-left: 3px solid var(--warn); }
.stat-card.warn::before { background: var(--warn); }
.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  transition: color var(--transition);
}
.stat-card:hover .stat-value { color: var(--accent-hover); }
.stat-label { font-size: 13px; color: var(--subtext); margin: 4px 0 8px; }
.stat-link { font-size: 12px; color: var(--accent); text-decoration: none; transition: color var(--transition); }
.stat-link:hover { color: var(--accent-hover); text-decoration: underline; }

/* ── Grids ───────────────────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* ── Tables with smooth hover ────────────────────────────────────────────── */
.table-responsive { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.table th {
  font-weight: 600;
  color: var(--subtext);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: #f9fafb;
  position: sticky;
  top: 0;
}
.table tr { transition: background var(--transition); }
.table tr:hover td { background: #f9fafb; }
.table .empty { text-align: center; color: var(--subtext); padding: 32px; }
.table a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
.table a:hover { text-decoration: underline; color: var(--accent-hover); }

/* ── Buttons with micro-interactions ─────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
  font-family: inherit;
  position: relative;
  overflow: hidden;
}
.btn:hover { background: #f3f4f6; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-block { width: 100%; justify-content: center; }
.btn-outline { background: transparent; border-color: var(--border); color: var(--subtext); }
.btn-outline:hover { background: #f3f4f6; color: var(--text); }

/* ── Action buttons row ──────────────────────────────────────────────────── */
.action-buttons { display: flex; gap: 8px; flex-wrap: wrap; }

/* ── Forms with better focus glow ────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 4px; color: var(--subtext); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 8px 12px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group textarea { min-height: 80px; resize: vertical; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.12);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-check { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.form-check input[type="checkbox"] { width: auto; }

/* ── Filter bar ──────────────────────────────────────────────────────────── */
.filter-bar {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
  margin-bottom: 20px;
  padding: 16px;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.filter-bar .form-group { margin-bottom: 0; min-width: 140px; }

/* ── Badges ──────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  transition: all var(--transition);
}
.badge-ok { background: #dcfce7; color: #166534; }
.badge-err { background: #fce4ec; color: #b71c1c; }
.badge-warn { background: #fef3c7; color: #92400e; }
.badge-info { background: #dbeafe; color: #1e40af; }
.badge-mute { background: #f3f4f6; color: #6b7280; }

/* ── Flash messages ──────────────────────────────────────────────────────── */
.flash {
  padding: 12px 24px;
  font-size: 13px;
  font-weight: 500;
  border-bottom: 1px solid;
  animation: slideUp 0.3s ease-out;
}
.flash.ok { background: #dcfce7; color: #166534; border-color: #bbf7d0; }
.flash.err { background: #fce4ec; color: #b71c1c; border-color: #fecaca; }
.flash.warn { background: #fef3c7; color: #92400e; border-color: #fde68a; }

/* ── Toast notifications ────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 500;
  max-width: 360px;
  animation: slideInRight 0.3s ease-out;
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.4;
}
.toast-icon { font-size: 16px; flex-shrink: 0; }
.toast.toast-success { border-left: 4px solid var(--success); }
.toast.toast-error { border-left: 4px solid var(--danger); }
.toast.toast-warning { border-left: 4px solid var(--warn); }
.toast.toast-info { border-left: 4px solid var(--accent); }
.toast.toast-leave { animation: fadeIn 0.25s ease-out reverse both; }

/* ── Pagination ──────────────────────────────────────────────────────────── */
.pagination { display: flex; gap: 4px; justify-content: center; margin: 20px 0; }
.pagination a, .pagination span {
  padding: 6px 12px;
  font-size: 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text);
  transition: all var(--transition);
}
.pagination a:hover { background: #f3f4f6; transform: translateY(-1px); }
.pagination .active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ── Skeleton loading ────────────────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #f8f8f8 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius);
  color: transparent !important;
  user-select: none;
  pointer-events: none;
}
.skeleton-line { display: block; height: 14px; margin-bottom: 8px; }
.skeleton-line:last-child { width: 60%; }
.skeleton-title { height: 20px; width: 40%; margin-bottom: 12px; }
.skeleton-card { height: 120px; }
.skeleton-btn { height: 32px; width: 80px; display: inline-block; }

/* ── Spinner ─────────────────────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Inline forms ────────────────────────────────────────────────────────── */
.inline-form { background: #f9fafb; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin: 12px 0; }

/* ── Expandable details with smooth animation ────────────────────────────── */
.detail-row { display: none; }
.detail-row.open {
  display: table-row;
  animation: fadeIn 0.25s ease-out;
}
.detail-row td { padding: 16px 20px; background: #f9fafb; }

/* ── Search box ──────────────────────────────────────────────────────────── */
.search-box { min-width: 200px; }

/* ── Login page with animated gradient ───────────────────────────────────── */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(-45deg, #667eea, #764ba2, #6366f1, #8b5cf6);
  background-size: 400% 400%;
  animation: gradientShift 8s ease infinite;
  position: relative;
  overflow: hidden;
}

.login-page::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: rgba(255,255,255,0.03);
  top: -200px;
  right: -200px;
  animation: float 8s ease-in-out infinite;
}

.login-page::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255,255,255,0.03);
  bottom: -100px;
  left: -100px;
  animation: float 10s ease-in-out infinite reverse;
}

.login-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 16px;
  padding: 40px;
  width: 380px;
  max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  text-align: center;
  position: relative;
  z-index: 1;
  animation: scaleIn 0.4s ease-out;
  border: 1px solid rgba(255,255,255,0.2);
}
.login-logo {
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}
.login-sub { font-size: 13px; color: var(--subtext); margin-bottom: 24px; }
.login-form { text-align: left; }
.login-form .form-group { margin-bottom: 16px; }
.login-info { font-size: 11px; color: var(--subtext); margin-top: 16px; }

/* ── Branded error state ───────────────────────────────────────────────── */
.error-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(700px 420px at 12% -10%, rgba(99,102,241,0.24), transparent 55%),
    radial-gradient(520px 340px at 100% 0%, rgba(245,158,11,0.16), transparent 50%),
    var(--bg);
}
.error-card {
  width: min(460px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  box-shadow: var(--shadow-lg);
}
.error-kicker {
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.error-card h1 {
  font-size: 28px;
  line-height: 1.15;
  margin-bottom: 10px;
}
.error-card p {
  color: var(--subtext);
  margin-bottom: 22px;
}
.error-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ── Bulk actions ────────────────────────────────────────────────────────── */
.bulk-bar { display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: #f9fafb; border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 12px; }
.bulk-bar select { min-width: 140px; }

/* ── Book review panel ──────────────────────────────────────────────────── */
.review-panel { padding: 8px 0; }
.review-info { display: flex; gap: 20px; flex-wrap: wrap; }
.review-cover { width: 100px; height: 140px; object-fit: cover; border-radius: 6px; border: 1px solid var(--border); flex-shrink: 0; transition: transform var(--transition); }
.review-cover:hover { transform: scale(1.05); }
.review-meta { flex: 1; min-width: 200px; }
.review-meta h3 { font-size: 16px; margin-bottom: 6px; }
.meta-line { font-size: 13px; color: var(--text); margin-bottom: 3px; }
.review-meta-line { font-size: 12px; color: var(--subtext); margin-bottom: 3px; }
.review-desc { font-size: 13px; color: var(--subtext); margin-top: 8px; padding: 8px 12px; background: #f9fafb; border-radius: var(--radius); border-left: 3px solid var(--accent); }
.prev-notes { font-size: 12px; color: var(--warn); margin-top: 8px; padding: 8px 12px; background: #fef3c7; border-radius: var(--radius); }
.prev-notes.err { color: var(--danger); background: #fce4ec; }
.review-form-box { width: 280px; flex-shrink: 0; padding: 16px; background: #f9fafb; border-radius: var(--radius); border: 1px solid var(--border); }
.review-form-box h4 { font-size: 14px; margin-bottom: 12px; }
.review-status-info { font-size: 12px; margin-bottom: 12px; }
.review-form-box .form-group { margin-bottom: 12px; }
.review-form-box select { width: 100%; padding: 8px 12px; font-size: 13px; border: 1px solid var(--border); border-radius: var(--radius); }
.review-form-box textarea { width: 100%; padding: 8px 12px; font-size: 13px; border: 1px solid var(--border); border-radius: var(--radius); min-height: 70px; resize: vertical; font-family: inherit; }

/* ── Message panel ──────────────────────────────────────────────────────── */
.msg-panel { padding: 16px; background: #f9fafb; border: 1px solid var(--border); border-radius: var(--radius); max-width: 500px; animation: fadeIn 0.25s ease-out; }
.msg-panel h4 { font-size: 14px; margin-bottom: 4px; }

/* ── Stat row ────────────────────────────────────────────────────────────── */
.stat-row { display: flex; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.stat-pill { font-size: 13px; color: var(--subtext); padding: 4px 12px; background: #f9fafb; border-radius: 20px; }

/* ── Book tags ───────────────────────────────────────────────────────────── */
.lang-tag, .genre-tag { display: inline-block; font-size: 10px; font-weight: 600; padding: 1px 6px; border-radius: 4px; margin-left: 4px; vertical-align: middle; }
.lang-tag { background: #e0e7ff; color: #4338ca; }
.genre-tag { background: #f3e8ff; color: #7c3aed; }

/* ── Book title link ─────────────────────────────────────────────────────── */
.book-title { font-weight: 500; transition: color var(--transition); }
.book-title:hover { color: var(--accent); }

/* ── Tooltip ─────────────────────────────────────────────────────────────── */
[data-tip] {
  position: relative;
}
[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) scale(0.95);
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 500;
  white-space: nowrap;
  border-radius: var(--radius);
  background: var(--text);
  color: #fff;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition);
  z-index: 10;
}
[data-tip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-backdrop { display: none; }
  .app:has(.sidebar.open) .sidebar-backdrop { display: block; }
  .sidebar-toggle { display: block; }
  .main { margin-left: 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .filter-bar { flex-direction: column; }
  .filter-bar .form-group { min-width: 100%; }
  .content { padding: 16px; }
  .toast { max-width: calc(100vw - 32px); }
}

/* ── Premium admin UI/UX/VFX layer ─────────────────────────────────────── */
@keyframes adminAura {
  0%, 100% { transform: translate3d(0,0,0) scale(1); opacity: .62; }
  50% { transform: translate3d(2%, -1%, 0) scale(1.04); opacity: .9; }
}

@keyframes adminReveal {
  from { opacity: 0; transform: translateY(16px) scale(.985); filter: blur(5px); }
  to { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
}

@keyframes adminNavPulse {
  0% { box-shadow: inset 3px 0 0 var(--accent), 0 0 0 rgba(99,102,241,0); }
  50% { box-shadow: inset 3px 0 0 var(--accent), 0 0 24px rgba(99,102,241,.22); }
  100% { box-shadow: inset 3px 0 0 var(--accent), 0 0 0 rgba(99,102,241,0); }
}

@keyframes adminSheen {
  to { transform: translateX(145%) skewX(-18deg); }
}

@keyframes adminRipple {
  to { opacity: 0; transform: translate(-50%, -50%) scale(6); }
}

body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -1;
  pointer-events: none;
  border-radius: 999px;
  filter: blur(40px);
}

body::before {
  width: 460px;
  height: 460px;
  left: 210px;
  top: -180px;
  background: radial-gradient(circle, rgba(99,102,241,.16), transparent 68%);
  animation: adminAura 15s ease-in-out infinite;
}

body::after {
  width: 380px;
  height: 380px;
  right: -120px;
  bottom: -140px;
  background: radial-gradient(circle, rgba(245,158,11,.14), transparent 68%);
  animation: adminAura 18s ease-in-out infinite reverse;
}

.sidebar {
  box-shadow: 18px 0 48px rgba(15,23,42,.18);
}

.sidebar-brand {
  position: sticky;
  top: 0;
  z-index: 2;
  backdrop-filter: blur(16px);
}

.sidebar-brand-dot {
  animation: pulse 2.4s ease-in-out infinite;
}

.sidebar-brand-logo {
  width: 32px;
  height: 22px;
  object-fit: contain;
  filter: drop-shadow(0 8px 16px rgba(99,102,241,.2));
  -webkit-text-fill-color: initial;
}

.nav-item {
  margin: 2px 10px;
  border-radius: 12px;
  border-left: 0;
  overflow: hidden;
}

.nav-item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: center;
  transition: transform var(--transition);
}

.nav-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(99,102,241,.14), transparent 65%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.nav-item:hover {
  transform: translateX(3px);
}

.nav-item.active {
  border-left-color: transparent;
  animation: adminNavPulse 3.2s ease-in-out infinite;
}

.nav-item.active::before,
.nav-item:hover::before {
  transform: scaleY(1);
}

.nav-item.active::after,
.nav-item:hover::after {
  opacity: 1;
}

.topbar {
  box-shadow: 0 8px 30px rgba(15,23,42,.06);
}

.topbar-title {
  letter-spacing: -.02em;
}

.content > * {
  animation: adminReveal .42s cubic-bezier(.22,1,.36,1) both;
}

.content > *:nth-child(2) { animation-delay: .04s; }
.content > *:nth-child(3) { animation-delay: .08s; }
.content > *:nth-child(4) { animation-delay: .12s; }

.card,
.stat-card,
.filter-bar,
.msg-panel,
.review-form-box,
.table-responsive {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(229,231,235,.74);
}

.card::after,
.stat-card::after,
.filter-bar::after,
.msg-panel::after,
.review-form-box::after,
.table-responsive::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 -55%;
  width: 42%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.46), transparent);
  transform: translateX(-120%) skewX(-18deg);
  opacity: 0;
  pointer-events: none;
}

.card:hover,
.stat-card:hover,
.filter-bar:hover,
.msg-panel:hover,
.review-form-box:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.card:hover::after,
.stat-card:hover::after,
.filter-bar:hover::after,
.msg-panel:hover::after,
.review-form-box:hover::after,
.table-responsive:hover::after {
  opacity: 1;
  animation: adminSheen .9s ease-out;
}

.stat-value {
  background: linear-gradient(135deg, var(--accent), #8b5cf6, var(--warn));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.table-responsive {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  background: var(--surface);
}

.table th {
  backdrop-filter: blur(10px);
  z-index: 1;
}

.table tbody tr {
  transform-origin: center;
}

.table tbody tr:hover {
  transform: scale(1.003);
}

.table tr:hover td {
  background: linear-gradient(90deg, rgba(99,102,241,.055), rgba(245,158,11,.035));
}

.btn {
  isolation: isolate;
}

.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--rx, 50%) var(--ry, 50%), rgba(255,255,255,.45), transparent 32%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
  z-index: -1;
}

.btn:hover::after {
  opacity: 1;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus,
.filter-bar input:focus,
.filter-bar select:focus {
  transform: translateY(-1px);
}

.badge {
  box-shadow: inset 0 -1px 0 rgba(255,255,255,.4);
}

.flash {
  position: sticky;
  top: 57px;
  z-index: 45;
  backdrop-filter: blur(16px);
}

.toast {
  transform-origin: top right;
}

.admin-pointer-glow {
  position: fixed;
  z-index: 9998;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(99,102,241,.34), transparent 70%);
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: opacity .2s ease;
  mix-blend-mode: multiply;
}

.admin-click-ripple {
  position: fixed;
  z-index: 9999;
  width: 16px;
  height: 16px;
  border-radius: 999px;
  background: rgba(99,102,241,.26);
  pointer-events: none;
  transform: translate(-50%, -50%) scale(.2);
  animation: adminRipple .52s ease-out forwards;
}

.admin-hotkey-hud {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 9999;
  transform: translateX(-50%) translateY(16px);
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(26,29,41,.86);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .02em;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity .24s ease, transform .24s ease;
}

.admin-hotkey-hud.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.admin-live-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(34,197,94,.1);
  color: #166534;
  border: 1px solid rgba(34,197,94,.22);
  font-size: 12px;
  font-weight: 700;
}

.admin-live-chip i {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--success);
  box-shadow: 0 0 0 0 rgba(34,197,94,.55);
  animation: adminLivePulse 1.8s ease-out infinite;
}

@keyframes adminLivePulse {
  70% { box-shadow: 0 0 0 9px rgba(34,197,94,0); }
  100% { box-shadow: 0 0 0 0 rgba(34,197,94,0); }
}

.login-page {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 24px;
  background:
    radial-gradient(540px 320px at 16% 14%, rgba(99,102,241,.22), transparent 64%),
    radial-gradient(500px 300px at 86% 16%, rgba(245,158,11,.16), transparent 62%),
    linear-gradient(145deg, #111827, #1a1d29 52%, #111827);
}

.login-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 34px 90px rgba(0,0,0,.28);
  animation: adminReveal .55s cubic-bezier(.22,1,.36,1) both;
}

.login-card::before {
  content: "";
  position: absolute;
  inset: -45%;
  background: conic-gradient(from 180deg, transparent, rgba(99,102,241,.18), transparent 25%, rgba(245,158,11,.16), transparent 56%);
  animation: adminAura 14s linear infinite;
  pointer-events: none;
}

.login-card > * {
  position: relative;
  z-index: 1;
}

.login-logo {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
}

.login-brand-logo {
  width: 54px;
  height: 36px;
  object-fit: contain;
  filter: drop-shadow(0 12px 22px rgba(99,102,241,.24));
}

.login-security-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 7px;
  margin: 16px 0 20px;
}

.login-security-strip span {
  padding: 7px 8px;
  border-radius: 999px;
  background: rgba(99,102,241,.08);
  color: var(--accent);
  font-size: 10px;
  font-weight: 800;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.login-form .form-group {
  transition: transform var(--transition), opacity var(--transition);
}

.login-form:focus-within .form-group:not(:focus-within) {
  opacity: .72;
}

.login-form .form-group:focus-within {
  transform: translateX(3px);
}

body.admin-focus-mode .sidebar,
body.admin-focus-mode .topbar {
  opacity: .22;
}

body.admin-focus-mode .content {
  max-width: 1040px;
  margin-inline: auto;
}

@media (prefers-reduced-motion: reduce) {
  body::before,
  body::after,
  .sidebar-brand-dot,
  .nav-item.active,
  .content > *,
  .skeleton {
    animation: none !important;
  }

  .admin-pointer-glow,
  .admin-click-ripple {
    display: none;
  }
}

@media (max-width: 768px) {
  .admin-live-chip {
    display: none;
  }

  .login-security-strip {
    grid-template-columns: 1fr;
  }
}

@media print {
  .sidebar,
  .topbar,
  .btn,
  .filter-bar,
  .toast-container,
  .admin-pointer-glow {
    display: none !important;
  }

  .main {
    margin: 0 !important;
  }

  .content {
    padding: 0 !important;
  }

  .card,
  .table-responsive {
    box-shadow: none !important;
    border: 1px solid #ddd !important;
  }
}