/* ===== CSS Custom Properties ===== */
:root {
  --sidebar-bg: #1e1e2e;
  --sidebar-text: #cdd6f4;
  --sidebar-active: #4f46e5;
  --sidebar-hover: #313244;
  --sidebar-width: 240px;

  --bg-primary: #f5f5f5;
  --bg-white: #ffffff;
  --bg-card: #ffffff;

  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;

  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --success: #10b981;
  --success-hover: #059669;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --warning: #f59e0b;
  --info: #3b82f6;

  --border: #e2e8f0;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);

  --font: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

/* ===== Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h1 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
}

.sidebar-header .subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
  overflow-y: auto;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 14px;
  transition: background 0.2s, color 0.2s;
  border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
  background: var(--sidebar-hover);
  color: #fff;
  text-decoration: none;
}

.sidebar-nav a.active {
  background: rgba(79, 70, 229, 0.15);
  color: #fff;
  border-left-color: var(--sidebar-active);
}

.sidebar-nav a i {
  width: 20px;
  text-align: center;
  font-size: 15px;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
}

.sidebar-footer .user-info {
  margin-bottom: 8px;
}

.sidebar-footer .user-name {
  color: #fff;
  font-weight: 600;
}

.sidebar-footer .user-role {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sidebar-footer .btn-logout {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--sidebar-text);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 12px;
  width: 100%;
  transition: background 0.2s;
}

.sidebar-footer .btn-logout:hover {
  background: rgba(239, 68, 68, 0.2);
  border-color: var(--danger);
  color: #fff;
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 24px 32px;
  min-height: 100vh;
  overflow-x: hidden;
}

.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--sidebar-bg);
  color: #fff;
  align-items: center;
  padding: 0 16px;
  z-index: 99;
  gap: 12px;
}

.mobile-header .hamburger {
  background: none;
  border: none;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  padding: 4px 8px;
}

.mobile-header h1 {
  font-size: 16px;
  font-weight: 600;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99;
}

/* ===== Login Page ===== */
.login-page {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #1e1e2e 0%, #313244 100%);
  padding: 20px;
}

.login-card {
  background: var(--bg-white);
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.login-card .logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-card .logo i {
  font-size: 48px;
  color: var(--primary);
  margin-bottom: 12px;
  display: block;
}

.login-card .logo h2 {
  font-size: 22px;
  color: var(--text-primary);
  font-weight: 700;
}

.login-card .logo p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.login-error {
  background: #fef2f2;
  color: var(--danger);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 16px;
  border: 1px solid #fecaca;
  display: none;
}

.login-error.show {
  display: block;
}

/* ===== Forms ===== */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font);
  color: var(--text-primary);
  background: var(--bg-white);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-control::placeholder {
  color: var(--text-muted);
}

select.form-control {
  cursor: pointer;
}

textarea.form-control {
  resize: vertical;
  min-height: 80px;
  font-family: 'SF Mono', 'Fira Code', monospace, var(--font);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  font-family: var(--font);
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }

.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-success:hover:not(:disabled) { background: var(--success-hover); }

.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover:not(:disabled) { background: var(--danger-hover); }

.btn-secondary {
  background: #e2e8f0;
  color: var(--text-primary);
}
.btn-secondary:hover:not(:disabled) { background: #cbd5e1; }

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-primary);
}
.btn-outline:hover:not(:disabled) { background: #f8fafc; }

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

.btn-lg {
  padding: 12px 24px;
  font-size: 16px;
  width: 100%;
}

.btn-icon {
  padding: 6px 8px;
  font-size: 13px;
}

/* ===== Page Header ===== */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-header h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
}

.page-header .actions {
  display: flex;
  gap: 8px;
}

/* ===== Cards ===== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-body {
  padding: 20px;
}

/* ===== Stats Cards ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-card .stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.stat-card .stat-icon.blue { background: rgba(79, 70, 229, 0.1); color: var(--primary); }
.stat-card .stat-icon.green { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.stat-card .stat-icon.gray { background: rgba(100, 116, 139, 0.1); color: var(--text-secondary); }
.stat-card .stat-icon.red { background: rgba(239, 68, 68, 0.1); color: var(--danger); }
.stat-card .stat-icon.orange { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.stat-card .stat-icon.purple { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; }

.stat-card-sm { padding: 12px 16px; }
.stat-card-sm .stat-icon { width: 40px; height: 40px; font-size: 16px; border-radius: 8px; }
.stat-card-sm .stat-info h3 { font-size: 22px; }
.stat-card-sm .stat-info p { font-size: 12px; }

.stats-grid-secondary { margin-top: 16px; }

.stat-card .stat-info h3 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
}

.stat-card .stat-info p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ===== Tables ===== */
.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

table th,
table td {
  padding: 10px 14px;
  text-align: left;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
}

table th {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: #f8fafc;
}

table tr:hover td {
  background: #f8fafc;
}

table td .actions {
  display: flex;
  gap: 6px;
}

/* ===== Badges ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.badge-draft { background: #f1f5f9; color: #64748b; }
.badge-published { background: #ecfdf5; color: #059669; }
.badge-archived { background: #fef2f2; color: #dc2626; }
.badge-super_admin { background: rgba(79, 70, 229, 0.1); color: var(--primary); }
.badge-admin { background: rgba(59, 130, 246, 0.1); color: var(--info); }
.badge-editor { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.badge-active { background: #ecfdf5; color: #059669; }
.badge-inactive { background: #f1f5f9; color: #94a3b8; }

/* ===== Tabs ===== */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 20px;
  gap: 0;
}

.tab-btn, .tab {
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  font-family: var(--font);
  transition: color 0.2s, border-color 0.2s;
}

.tab-btn:hover, .tab:hover {
  color: var(--text-primary);
}

.tab-btn.active, .tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 200;
  padding: 20px;
}

.modal {
  background: var(--bg-white);
  border-radius: var(--radius);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px 8px;
}

.modal-close:hover { color: var(--text-primary); }

.modal-body {
  padding: 20px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}

/* ===== Filter Bar ===== */
.filter-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.filter-bar .form-control {
  width: auto;
  min-width: 200px;
}

.filter-bar select.form-control {
  min-width: 140px;
}

/* ===== Toast Notifications ===== */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: #fff;
  box-shadow: var(--shadow-md);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
  max-width: 360px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }

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

@keyframes toastOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* ===== Loading Spinner ===== */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-text {
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 12px;
}

/* ===== Utility ===== */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 13px; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.gap-2 { gap: 8px; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 48px;
  margin-bottom: 12px;
  display: block;
}

.empty-state p {
  font-size: 14px;
}

/* ===== Assets Grid ===== */
.assets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

.asset-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-white);
}

.asset-card .asset-preview {
  height: 120px;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 36px;
}

.asset-card .asset-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.asset-card .asset-info {
  padding: 10px;
  font-size: 12px;
}

.asset-card .asset-info .name {
  font-weight: 600;
  word-break: break-all;
  margin-bottom: 4px;
}

.asset-card .asset-actions {
  padding: 8px 10px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
}

/* ===== JSON Viewer ===== */
.json-viewer {
  background: #1e293b;
  color: #e2e8f0;
  padding: 16px;
  border-radius: var(--radius);
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 13px;
  line-height: 1.5;
  overflow-x: auto;
  max-height: 400px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ===== Welcome ===== */
.welcome-banner {
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: #fff;
  padding: 24px 28px;
  border-radius: var(--radius);
  margin-bottom: 24px;
}

.welcome-banner h2 {
  font-size: 20px;
  margin-bottom: 4px;
}

.welcome-banner p {
  font-size: 14px;
  opacity: 0.85;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .mobile-header {
    display: flex;
  }

  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-overlay.show {
    display: block;
  }

  .main-content {
    margin-left: 0;
    padding: 72px 16px 24px;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .filter-bar .form-control {
    min-width: 100%;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .modal {
    max-width: 100%;
    margin: 10px;
  }
}

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