/**
 * KomfyStudio Admin Dashboard Styles
 * Modern, clean, and responsive design
 */

/* ============================================
   VARIABLES & RESET
   ============================================ */

:root {
  /* Colors */
  --primary: #667eea;
  --primary-dark: #5568d3;
  --secondary: #764ba2;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  
  /* Grays */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition: all 0.2s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--gray-900);
  background-color: var(--gray-50);
  overflow-x: hidden;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.hidden {
  display: none !important;
}

.loading {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--gray-500);
}

/* ============================================
   LOGIN SCREEN
   ============================================ */

.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  padding: var(--spacing-md);
}

.login-box {
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: var(--spacing-2xl);
  width: 100%;
  max-width: 400px;
  animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.login-header .logo {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
}

.login-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-sm);
}

.login-header p {
  color: var(--gray-600);
  font-size: 0.875rem;
}

.login-form {
  margin-bottom: var(--spacing-lg);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group input {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.error-message {
  background-color: #fee2e2;
  color: var(--danger);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  font-size: 0.875rem;
}

.login-footer {
  text-align: center;
  color: var(--gray-500);
  font-size: 0.75rem;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  gap: 0.5rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--gray-100);
  color: var(--gray-700);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--gray-200);
}

.btn-block {
  width: 100%;
}

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

/* ============================================
   HEADER
   ============================================ */

.header {
  background: white;
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.header-left .logo {
  font-size: 2rem;
}

.header-left h1 {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.health-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 0.5rem 1rem;
  background: var(--gray-50);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
}

.health-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gray-400);
  animation: pulse 2s infinite;
}

.health-dot.healthy {
  background: var(--success);
}

.health-dot.unhealthy {
  background: var(--danger);
}

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

/* ============================================
   NAVIGATION TABS
   ============================================ */

.nav-tabs {
  background: white;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  gap: var(--spacing-sm);
  padding: 0 var(--spacing-lg);
  max-width: 1400px;
  margin: 0 auto;
  overflow-x: auto;
}

.nav-tab {
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  background: none;
  color: var(--gray-600);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-tab:hover {
  color: var(--primary);
}

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

/* ============================================
   MAIN CONTENT
   ============================================ */

.main-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
  min-height: calc(100vh - 200px);
}

.view {
  display: none;
  animation: fadeIn 0.3s ease;
}

.view.active {
  display: block;
}

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

.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.view-header h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--gray-900);
}

.view-actions {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* ============================================
   STATS GRID
   ============================================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.stat-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  transition: var(--transition);
}

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

.stat-icon {
  font-size: 2.5rem;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: var(--radius-lg);
  flex-shrink: 0;
}

.stat-content {
  flex: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--gray-600);
  margin-bottom: var(--spacing-xs);
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-900);
}

/* ============================================
   CHARTS
   ============================================ */

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.chart-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.chart-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--gray-900);
}

.chart-card canvas {
  max-height: 300px;
}

/* ============================================
   SECTION CARD
   ============================================ */

.section-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-xl);
}

.section-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--gray-900);
}

/* ============================================
   FORMS & INPUTS
   ============================================ */

.search-input {
  padding: 0.625rem 1rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  min-width: 250px;
  transition: var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.filter-select {
  padding: 0.625rem 1rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  background: white;
  cursor: pointer;
  transition: var(--transition);
}

.filter-select:focus {
  outline: none;
  border-color: var(--primary);
}

/* ============================================
   TABLES
   ============================================ */

.table-container {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
}

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

.data-table thead {
  background: var(--gray-50);
}

.data-table th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
  color: var(--gray-700);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--gray-200);
}

.data-table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.875rem;
}

.data-table tbody tr:hover {
  background: var(--gray-50);
}

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

/* Status Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-success {
  background: #d1fae5;
  color: #065f46;
}

.badge-warning {
  background: #fef3c7;
  color: #92400e;
}

.badge-danger {
  background: #fee2e2;
  color: #991b1b;
}

.badge-info {
  background: #dbeafe;
  color: #1e40af;
}

/* ============================================
   PAGINATION
   ============================================ */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) 0;
}

.pagination button {
  padding: 0.5rem 1rem;
  border: 1px solid var(--gray-300);
  background: white;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition);
}

.pagination button:hover:not(:disabled) {
  background: var(--gray-50);
  border-color: var(--primary);
}

.pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination .page-info {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  color: var(--gray-600);
}

/* ============================================
   ACTIVITY LIST
   ============================================ */

.activity-list {
  max-height: 400px;
  overflow-y: auto;
}

.activity-item {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: start;
  gap: var(--spacing-md);
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.25rem;
}

.activity-content {
  flex: 1;
}

.activity-title {
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--spacing-xs);
}

.activity-meta {
  font-size: 0.8125rem;
  color: var(--gray-600);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  background: white;
  border-top: 1px solid var(--gray-200);
  padding: var(--spacing-lg);
  text-align: center;
  color: var(--gray-600);
  font-size: 0.875rem;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .view-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .charts-grid {
    grid-template-columns: 1fr;
  }
  
  .search-input {
    min-width: 100%;
  }
  
  .table-container {
    overflow-x: auto;
  }
  
  .data-table {
    min-width: 600px;
  }
}