/* ============================================
   AI API Gateway - Admin Dashboard Styles
   Premium dark theme with glassmorphism
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Core palette */
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.8);
  --bg-card-hover: rgba(31, 41, 55, 0.9);
  --bg-modal: rgba(17, 24, 39, 0.95);
  --bg-input: rgba(31, 41, 55, 0.6);

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

  /* Accent colors */
  --accent-primary: #6366f1;      /* Indigo */
  --accent-primary-light: #818cf8;
  --accent-secondary: #8b5cf6;    /* Violet */
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;
  --accent-info: #06b6d4;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1, #8b5cf6);
  --gradient-success: linear-gradient(135deg, #10b981, #34d399);
  --gradient-danger: linear-gradient(135deg, #ef4444, #f87171);
  --gradient-bg: linear-gradient(180deg, #0a0e1a 0%, #111827 50%, #0a0e1a 100%);
  --gradient-mesh: radial-gradient(at 20% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
                   radial-gradient(at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
                   radial-gradient(at 50% 50%, rgba(6, 182, 212, 0.05) 0%, transparent 50%);

  /* Text */
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  /* Borders */
  --border-color: rgba(255, 255, 255, 0.06);
  --border-color-hover: rgba(255, 255, 255, 0.12);

  /* Sizing */
  --sidebar-width: 260px;
  --header-height: 64px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ============ LOGIN PAGE ============ */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-bg);
  position: relative;
}

.login-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-mesh);
  pointer-events: none;
}

.login-card {
  position: relative;
  width: 420px;
  padding: 48px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow);
  animation: fadeInUp 0.6s ease;
}

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

.login-card .logo h1 {
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.login-card .logo p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 8px;
}

/* ============ FORM ELEMENTS ============ */

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-input);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: all var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

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

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

select.form-control {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239ca3af' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  line-height: 1.4;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

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

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

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--glass-border);
}

.btn-outline:hover {
  background: var(--glass-bg);
  color: var(--text-primary);
  border-color: var(--border-color-hover);
}

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

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ============ LAYOUT ============ */

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

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

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-header h1 {
  font-size: 20px;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar-header p {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

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

.nav-section {
  margin-bottom: 24px;
}

.nav-section-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  padding: 0 12px;
  margin-bottom: 8px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 2px;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.nav-item.active {
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-primary-light);
}

.nav-item .icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.user-details {
  flex: 1;
}

.user-details .name {
  font-weight: 600;
  font-size: 13px;
}

.user-details .role {
  font-size: 11px;
  color: var(--text-muted);
}

/* Main content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  background: var(--bg-primary);
  position: relative;
}

.main-content::before {
  content: '';
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: var(--sidebar-width);
  background: var(--gradient-mesh);
  pointer-events: none;
  z-index: 0;
}

.page-content {
  padding: 32px;
  position: relative;
  z-index: 1;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.page-header h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

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

/* ============ STAT CARDS ============ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.stat-card.indigo::before { background: var(--gradient-primary); }
.stat-card.green::before { background: var(--gradient-success); }
.stat-card.amber::before { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.stat-card.cyan::before { background: linear-gradient(135deg, #06b6d4, #22d3ee); }
.stat-card.rose::before { background: var(--gradient-danger); }

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-color-hover);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.stat-card .stat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.stat-card.indigo .stat-icon { background: rgba(99, 102, 241, 0.15); color: var(--accent-primary-light); }
.stat-card.green .stat-icon { background: rgba(16, 185, 129, 0.15); color: var(--accent-success); }
.stat-card.amber .stat-icon { background: rgba(245, 158, 11, 0.15); color: var(--accent-warning); }
.stat-card.cyan .stat-icon { background: rgba(6, 182, 212, 0.15); color: var(--accent-info); }
.stat-card.rose .stat-icon { background: rgba(239, 68, 68, 0.15); color: var(--accent-danger); }

.stat-card .stat-value {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-card .stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.stat-card .stat-change {
  font-size: 12px;
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-change.up { color: var(--accent-success); }
.stat-change.down { color: var(--accent-danger); }

/* ============ CARDS ============ */

.card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

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

.card-body {
  padding: 24px;
}

/* ============ TABLE ============ */

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead th {
  text-align: left;
  padding: 12px 16px;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

tbody td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  vertical-align: middle;
}

tbody tr {
  transition: background var(--transition-fast);
}

tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

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

/* ============ BADGES / STATUS ============ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}

.badge-active, .badge-success {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-success);
}

.badge-error, .badge-danger {
  background: rgba(239, 68, 68, 0.12);
  color: var(--accent-danger);
}

.badge-disabled, .badge-warning {
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent-warning);
}

.badge-info {
  background: rgba(6, 182, 212, 0.12);
  color: var(--accent-info);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
}

.badge-active .badge-dot { background: var(--accent-success); }
.badge-error .badge-dot { background: var(--accent-danger); }
.badge-disabled .badge-dot { background: var(--accent-warning); }

/* ============ MODAL ============ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 200ms ease;
}

.modal {
  background: var(--bg-modal);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  width: 95%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
  animation: fadeInUp 300ms ease;
}

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

.modal-header h3 {
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--glass-bg);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.modal-body {
  padding: 24px;
}

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

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

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
}

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

.pagination-buttons {
  display: flex;
  gap: 8px;
}

/* ============ TOAST / NOTIFICATION ============ */

.toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toast {
  padding: 14px 20px;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 300px;
  max-width: 420px;
  animation: slideInRight 300ms ease;
  font-size: 14px;
}

.toast.success { border-left: 3px solid var(--accent-success); }
.toast.error { border-left: 3px solid var(--accent-danger); }
.toast.info { border-left: 3px solid var(--accent-info); }

/* ============ LOADING ============ */

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-overlay {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
  flex-direction: column;
  gap: 16px;
  color: var(--text-secondary);
}

/* ============ EMPTY STATE ============ */

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-state .icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state p {
  font-size: 15px;
}

/* ============ KEY DISPLAY ============ */

.key-display {
  font-family: 'SF Mono', 'Fira Code', monospace;
  background: rgba(0, 0, 0, 0.3);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  font-size: 13px;
  color: var(--accent-success);
  word-break: break-all;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.key-display:hover {
  border-color: var(--accent-success);
}

.key-display::after {
  content: '📋 Click to copy';
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  color: var(--text-muted);
  opacity: 0;
  transition: all var(--transition-fast);
}

.key-display:hover::after {
  opacity: 1;
}

/* ============ TAGS ============ */

.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 4px;
  font-size: 11px;
  color: var(--accent-primary-light);
  margin: 2px;
}

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

.chart-container {
  height: 200px;
  display: flex;
  align-items: flex-end;
  gap: 4px;
  padding: 20px 0;
}

.chart-bar {
  flex: 1;
  background: var(--gradient-primary);
  border-radius: 4px 4px 0 0;
  min-height: 4px;
  transition: all var(--transition-normal);
  opacity: 0.7;
  position: relative;
}

.chart-bar:hover {
  opacity: 1;
  transform: scaleY(1.05);
  transform-origin: bottom;
}

/* ============ ANIMATIONS ============ */

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

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

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

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

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

/* ============ SCROLLBAR ============ */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

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

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

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

  .main-content {
    margin-left: 0;
  }

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

  .page-content {
    padding: 20px;
  }

  .modal {
    width: 100%;
    max-width: 100%;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    margin-top: auto;
  }
}

/* ============ UTILITIES ============ */

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.text-center { text-align: center; }
.text-sm { font-size: 13px; }
.text-muted { color: var(--text-secondary); }
.font-mono { font-family: 'SF Mono', 'Fira Code', monospace; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 200px; }
.hidden { display: none !important; }