/* ============================================
   Modern Admin Design System
   ============================================ */

/* ---------- Design Tokens ---------- */
:root {
  /* Colors */
  --admin-primary: #2563eb;
  --admin-primary-dark: #1e40af;
  --admin-primary-light: #3b82f6;
  --admin-secondary: #64748b;
  --admin-success: #10b981;
  --admin-warning: #f59e0b;
  --admin-danger: #ef4444;
  --admin-info: #06b6d4;
  
  /* Neutrals */
  --admin-bg: #f8fafc;
  --admin-bg-secondary: #f1f5f9;
  --admin-card: #ffffff;
  --admin-border: #e2e8f0;
  --admin-text: #0f172a;
  --admin-text-muted: #64748b;
  --admin-text-light: #94a3b8;
  
  /* Shadows */
  --admin-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --admin-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --admin-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --admin-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --admin-shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Spacing */
  --admin-radius: 0.75rem;
  --admin-radius-sm: 0.5rem;
  --admin-radius-lg: 1rem;
  
  /* Typography */
  --admin-font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --admin-font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;
}

/* ---------- Base Styles ---------- */
.admin-modern {
  font-family: var(--admin-font-sans);
  background: var(--admin-bg);
  color: var(--admin-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- Layout Components ---------- */
.admin-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
}

.admin-header {
  background: var(--admin-card);
  border-bottom: 1px solid var(--admin-border);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--admin-shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.admin-header-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.admin-header-brand img {
  width: 48px;
  height: 48px;
  border-radius: var(--admin-radius-sm);
  object-fit: cover;
}

.admin-header-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--admin-text);
  margin: 0;
}

.admin-header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* ---------- Card Components ---------- */
.admin-card {
  background: var(--admin-card);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  box-shadow: var(--admin-shadow);
  padding: 1.5rem;
  transition: all 0.2s ease;
}

.admin-card:hover {
  box-shadow: var(--admin-shadow-md);
}

.admin-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--admin-border);
}

.admin-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--admin-text);
  margin: 0;
}

.admin-card-body {
  color: var(--admin-text-muted);
}

/* ---------- Dashboard Grid ---------- */
.admin-dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.admin-stat-card {
  background: var(--admin-card);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  padding: 1.5rem;
  box-shadow: var(--admin-shadow);
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.admin-stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--admin-primary);
}

.admin-stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--admin-shadow-lg);
}

.admin-stat-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.admin-stat-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--admin-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: var(--admin-bg-secondary);
  color: var(--admin-primary);
}

.admin-stat-card-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--admin-text);
  margin: 0;
  line-height: 1;
}

.admin-stat-card-label {
  font-size: 0.875rem;
  color: var(--admin-text-muted);
  margin-top: 0.5rem;
  font-weight: 500;
}

.admin-stat-card-footer {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--admin-border);
}

.admin-stat-card-link {
  color: var(--admin-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.2s ease;
}

.admin-stat-card-link:hover {
  color: var(--admin-primary-dark);
}

/* ---------- Table Components ---------- */
.admin-table-wrapper {
  background: var(--admin-card);
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  box-shadow: var(--admin-shadow);
  overflow: hidden;
}

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

.admin-table thead {
  background: var(--admin-bg-secondary);
}

.admin-table th {
  padding: 1rem 1.5rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--admin-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--admin-border);
}

.admin-table td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--admin-border);
  color: var(--admin-text);
}

.admin-table tbody tr {
  transition: background-color 0.15s ease;
}

.admin-table tbody tr:hover {
  background: var(--admin-bg-secondary);
}

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

/* ---------- Button Components ---------- */
.admin-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--admin-radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  line-height: 1.5;
}

.admin-btn-primary {
  background: var(--admin-primary);
  color: white;
  border-color: var(--admin-primary);
}

.admin-btn-primary:hover {
  background: var(--admin-primary-dark);
  border-color: var(--admin-primary-dark);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--admin-shadow-md);
}

.admin-btn-secondary {
  background: var(--admin-card);
  color: var(--admin-text);
  border-color: var(--admin-border);
}

.admin-btn-secondary:hover {
  background: var(--admin-bg-secondary);
  border-color: var(--admin-border);
}

.admin-btn-success {
  background: var(--admin-success);
  color: white;
  border-color: var(--admin-success);
}

.admin-btn-success:hover {
  background: #059669;
  border-color: #059669;
  color: white;
}

.admin-btn-warning {
  background: var(--admin-warning);
  color: white;
  border-color: var(--admin-warning);
}

.admin-btn-warning:hover {
  background: #d97706;
  border-color: #d97706;
  color: white;
}

.admin-btn-danger {
  background: var(--admin-danger);
  color: white;
  border-color: var(--admin-danger);
}

.admin-btn-danger:hover {
  background: #dc2626;
  border-color: #dc2626;
  color: white;
}

.admin-btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
}

.admin-btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
}

/* ---------- Badge Components ---------- */
.admin-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.admin-badge-primary {
  background: rgba(37, 99, 235, 0.1);
  color: var(--admin-primary);
}

.admin-badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--admin-success);
}

.admin-badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--admin-warning);
}

.admin-badge-danger {
  background: rgba(239, 68, 68, 0.1);
  color: var(--admin-danger);
}

/* ---------- Form Components ---------- */
.admin-form-group {
  margin-bottom: 1.5rem;
}

.admin-form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--admin-text);
  margin-bottom: 0.5rem;
}

.admin-form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius-sm);
  background: var(--admin-card);
  color: var(--admin-text);
  transition: all 0.2s ease;
}

.admin-form-input:focus {
  outline: none;
  border-color: var(--admin-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ---------- Navigation ---------- */
.admin-nav {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.admin-nav-link {
  padding: 0.625rem 1rem;
  color: var(--admin-text-muted);
  text-decoration: none;
  border-radius: var(--admin-radius-sm);
  font-weight: 500;
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.admin-nav-link:hover {
  background: var(--admin-bg-secondary);
  color: var(--admin-text);
}

.admin-nav-link.active {
  background: var(--admin-primary);
  color: white;
}

/* ---------- Empty State ---------- */
.admin-empty-state {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--admin-text-muted);
}

.admin-empty-state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.admin-empty-state-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--admin-text);
  margin-bottom: 0.5rem;
}

.admin-empty-state-text {
  font-size: 0.875rem;
  color: var(--admin-text-muted);
}

/* ---------- Responsive Design ---------- */
@media (max-width: 768px) {
  .admin-container {
    padding: 1rem;
  }
  
  .admin-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
  }
  
  .admin-dashboard-grid {
    grid-template-columns: 1fr;
  }
  
  .admin-table-wrapper {
    overflow-x: auto;
  }
  
  .admin-table {
    min-width: 600px;
  }
  
  .admin-table thead {
    display: none;
  }
  
  .admin-table tbody tr {
    display: block;
    margin-bottom: 1rem;
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-sm);
    padding: 1rem;
  }
  
  .admin-table tbody td {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--admin-border);
  }
  
  .admin-table tbody td:last-child {
    border-bottom: none;
  }
  
  .admin-table tbody td::before {
    content: attr(data-label);
    font-weight: 600;
    color: var(--admin-text-muted);
    margin-right: 1rem;
  }
}

/* ---------- Utility Classes ---------- */
.admin-text-muted {
  color: var(--admin-text-muted);
}

.admin-text-light {
  color: var(--admin-text-light);
}

.admin-mb-1 { margin-bottom: 0.5rem; }
.admin-mb-2 { margin-bottom: 1rem; }
.admin-mb-3 { margin-bottom: 1.5rem; }
.admin-mb-4 { margin-bottom: 2rem; }

.admin-mt-1 { margin-top: 0.5rem; }
.admin-mt-2 { margin-top: 1rem; }
.admin-mt-3 { margin-top: 1.5rem; }
.admin-mt-4 { margin-top: 2rem; }

.admin-flex {
  display: flex;
}

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

.admin-gap-1 { gap: 0.5rem; }
.admin-gap-2 { gap: 1rem; }
.admin-gap-3 { gap: 1.5rem; }