:root {
  --bg-main: #0b0f19;
  --bg-card: #111827;
  --bg-sidebar: #080c14;
  --bg-input: #1f2937;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #6366f1;
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --text-main: #f9fafb;
  --text-muted: #9ca3af;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  --radius: 10px;
  --shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.5);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  font-size: 14px;
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: transform 0.3s ease;
}

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

.brand-badge {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.brand-title {
  font-weight: 700;
  font-size: 16px;
  color: #fff;
  letter-spacing: -0.3px;
}

.brand-sub {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sidebar-nav {
  padding: 16px 12px;
  flex: 1;
  overflow-y: auto;
}

.nav-group-title {
  font-size: 11px;
  text-transform: uppercase;
  color: #6b7280;
  padding: 12px 12px 6px 12px;
  letter-spacing: 0.8px;
  font-weight: 600;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  color: #9ca3af;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.2s ease;
  margin-bottom: 2px;
}

.nav-link:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: #fff;
}

.nav-link.active {
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.15) 0%, rgba(99, 102, 241, 0.05) 100%);
  color: #818cf8;
  font-weight: 600;
  border-left: 3px solid var(--primary);
}

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

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

.user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #374151;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: #fff;
}

/* Main Content Area */
.main-wrapper {
  margin-left: 260px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  height: 64px;
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 90;
}

.page-title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

.content-body {
  padding: 32px;
  flex: 1;
}

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.kpi-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #6366f1, #a855f7);
}

.kpi-label {
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  font-weight: 600;
}

.kpi-value {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  margin: 8px 0;
}

/* Card Container */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 28px;
}

.card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}

.card-body {
  padding: 24px;
}

/* Table Styles */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  padding: 12px 16px;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-muted);
  background-color: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
}

td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  color: #d1d5db;
}

tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: capitalize;
}

.badge-published, .badge-active, .badge-read {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-draft, .badge-in_progress, .badge-beta {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-archived, .badge-discontinued {
  background: rgba(156, 163, 175, 0.15);
  color: #9ca3af;
  border: 1px solid rgba(156, 163, 175, 0.3);
}

.badge-unread {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #4f46e5 0%, #4338ca 100%);
}

.btn-secondary {
  background-color: #374151;
  color: #f3f4f6;
}

.btn-secondary:hover {
  background-color: #4b5563;
}

.btn-danger {
  background-color: #dc2626;
  color: #fff;
}

.btn-danger:hover {
  background-color: #b91c1c;
}

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

/* Form inputs */
.form-group {
  margin-bottom: 18px;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #e5e7eb;
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: #fff;
  font-size: 13px;
  transition: border-color 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

textarea.form-control {
  min-height: 90px;
  resize: vertical;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  max-width: 700px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.7);
}

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Toast Notification */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  padding: 14px 20px;
  border-radius: 8px;
  background: #1f2937;
  color: #fff;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
  font-size: 13px;
  animation: slideIn 0.3s ease forwards;
}

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

/* Login Page Spec */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  width: 100%;
  background: radial-gradient(circle at 50% 20%, #1e1b4b 0%, #0b0f19 80%);
}

.login-card {
  background: rgba(17, 24, 39, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  width: 100%;
  max-width: 420px;
  padding: 36px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}