:root {
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --primary-light: #EFF6FF;
  --bg-main: #F8FAFC;
  --bg-card: #FFFFFF;
  --border: #E2E8F0;
  --text-main: #0F172A;
  --text-muted: #64748B;
  --success: #10B981;
  --success-bg: #ECFDF5;
  --warning: #F59E0B;
  --warning-bg: #FEF3C7;
  --danger: #EF4444;
  --danger-bg: #FEF2F2;
  --radius: 12px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
}

/* Auth View */
.auth-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
  background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
}

.auth-card {
  background: var(--bg-card);
  padding: 40px 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 420px;
  border: 1px solid var(--border);
}

.brand-badge {
  width: 56px;
  height: 56px;
  background: var(--primary);
  color: #fff;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  margin: 0 auto 16px;
}

.auth-header {
  text-align: center;
  margin-bottom: 28px;
}

.auth-header h2 {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-main);
}

.auth-header p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 4px;
}

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

.sidebar {
  width: 260px;
  background: #FFFFFF;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 24px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}

.brand-badge-sm {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
}

.sidebar-title h3 {
  font-size: 16px;
  font-weight: 800;
  line-height: 1.2;
}

.sidebar-title span {
  font-size: 12px;
  color: var(--text-muted);
}

.sidebar-nav {
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.2s;
}

.nav-item:hover {
  background: var(--bg-main);
  color: var(--text-main);
}

.nav-item.active {
  background: var(--primary-light);
  color: var(--primary);
}

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

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  background: #E2E8F0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
}

.user-name {
  font-size: 14px;
  font-weight: 600;
}

.btn-logout {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
}

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

/* Main Content Area */
.main-content {
  flex: 1;
  padding: 32px 40px;
  overflow-y: auto;
}

.page-header {
  margin-bottom: 24px;
}

.page-header h1 {
  font-size: 26px;
  font-weight: 800;
}

.page-header p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 4px;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.stat-card {
  background: var(--bg-card);
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-value {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-main);
  margin: 10px 0 4px;
}

.stat-meta {
  font-size: 12px;
  color: var(--text-muted);
}

/* Cards & Tables */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 24px;
}

.card-header {
  margin-bottom: 20px;
}

.card-header h2 {
  font-size: 18px;
  font-weight: 700;
}

.mt-6 {
  margin-top: 24px;
}

.filter-bar {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.form-inline {
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-inline label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.select-filter {
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 14px;
  background: #fff;
}

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

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.data-table th {
  padding: 12px 16px;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  background: var(--bg-main);
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

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

.thumb-preview {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.thumb-placeholder {
  width: 48px;
  height: 48px;
  background: #F1F5F9;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 11px;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 700;
}

.badge-published {
  background: var(--success-bg);
  color: var(--success);
}

.badge-draft {
  background: var(--warning-bg);
  color: var(--warning);
}

.badge-pdf {
  background: #EFF6FF;
  color: #2563EB;
}

.badge-image {
  background: #FAF5FF;
  color: #9333EA;
}

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger);
}

/* Buttons & Form Controls */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

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

.btn-secondary {
  background: #F1F5F9;
  color: var(--text-main);
}

.btn-secondary:hover {
  background: #E2E8F0;
}

.btn-success {
  background: var(--success-bg);
  color: var(--success);
}

.btn-success:hover {
  background: #D1FAE5;
}

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

.btn-danger:hover {
  background: #FEE2E2;
}

.btn-block {
  width: 100%;
}

.form-group {
  margin-bottom: 18px;
}

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

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: #fff;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-row {
  display: flex;
  gap: 16px;
}

.flex-1 {
  flex: 1;
}

.alert {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 16px;
}

.alert-error {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid #FECACA;
}

/* Drop Zone */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 24px 16px;
  text-align: center;
  position: relative;
  cursor: pointer;
  background: #F8FAFC;
  transition: all 0.2s;
}

.drop-zone:hover {
  border-color: var(--primary);
  background: var(--primary-light);
}

.drop-zone input[type="file"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.drop-zone-text {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

/* Modals */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
}

.modal-dialog {
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.modal-header h3 {
  font-size: 18px;
  font-weight: 800;
}

.close-modal {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-muted);
  cursor: pointer;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

.action-btns {
  display: flex;
  gap: 8px;
}