/* CSS Variables */
:root {
  --primary-color: #3b82f6;
  --primary-hover: #2563eb;
  --success-color: #22c55e;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --info-color: #06b6d4;
  
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --text-color: #1e293b;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  
  --header-bg: #1e293b;
  --header-text: #ffffff;
  
  --online-color: #22c55e;
  --offline-color: #94a3b8;
  --locked-color: #ef4444;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Base */
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--primary-color);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Header */
.header {
  background-color: var(--header-bg);
  color: var(--header-text);
  padding: 0 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--header-text);
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
  opacity: 0.9;
}

.nav {
  display: flex;
  gap: 1rem;
}

.nav-link {
  color: var(--header-text);
  opacity: 0.8;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: opacity 0.2s, background-color 0.2s;
}

.nav-link:hover {
  opacity: 1;
  text-decoration: none;
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
  opacity: 1;
  background-color: rgba(255, 255, 255, 0.15);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.username {
  opacity: 0.8;
}

/* Main Content */
.main {
  flex: 1;
  padding: 2rem 1rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

/* Page Header */
.page-header {
  margin-bottom: 2rem;
}

.page-header h1 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.page-title-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.breadcrumb {
  margin-bottom: 0.5rem;
}

.breadcrumb a {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Cards */
.card {
  background-color: var(--card-bg);
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  margin-bottom: 1.5rem;
  overflow: hidden;
}

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

.card-header h2 {
  font-size: 1.125rem;
  font-weight: 600;
}

.card-body {
  padding: 1.5rem;
}

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

.card-highlight {
  border: 2px solid var(--success-color);
}

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.table th {
  background-color: var(--bg-color);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

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

.row-offline {
  opacity: 0.6;
}

.row-locked {
  background-color: #fef2f2;
}

.row-used {
  opacity: 0.7;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s, opacity 0.2s;
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
}

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

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

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

.btn-secondary:hover {
  background-color: #cbd5e1;
}

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

.btn-success:hover {
  background-color: #16a34a;
}

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

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

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

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

.btn-sm {
  padding: 0.25rem 0.75rem;
  font-size: 0.8125rem;
}

.btn-xs {
  padding: 0.125rem 0.5rem;
  font-size: 0.75rem;
}

.btn-block {
  width: 100%;
}

.btn-group {
  display: flex;
  gap: 0.5rem;
}

/* Status Indicators */
.status-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 0.25rem;
}

.status-online {
  background-color: var(--online-color);
}

.status-offline {
  background-color: var(--offline-color);
}

.status-locked {
  background-color: var(--locked-color);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.8125rem;
  font-weight: 500;
}

.status-badge.status-online {
  background-color: #dcfce7;
  color: #166534;
}

.status-badge.status-offline {
  background-color: #f1f5f9;
  color: #475569;
}

.status-badge.status-locked {
  background-color: #fef2f2;
  color: #991b1b;
}

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

.status-badge.status-available {
  background-color: #dcfce7;
  color: #166534;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-success {
  background-color: #dcfce7;
  color: #166534;
}

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

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

/* User Badge */
.user-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  background-color: var(--primary-color);
  color: white;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
}

.user-badge-lg {
  padding: 0.5rem 1rem;
  font-size: 1rem;
}

/* Action Badges */
.action-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.8125rem;
}

.action-login { background-color: #dbeafe; color: #1e40af; }
.action-logout { background-color: #f1f5f9; color: #475569; }
.action-disable_user { background-color: #fef2f2; color: #991b1b; }
.action-enable_user { background-color: #dcfce7; color: #166534; }
.action-logout_user { background-color: #fef3c7; color: #92400e; }
.action-generate_token { background-color: #f3e8ff; color: #6b21a8; }
.action-revoke_token { background-color: #fef2f2; color: #991b1b; }
.action-change_password { background-color: #f0f9ff; color: #0c4a6e; }

/* Forms */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  font-size: 0.875rem;
}

.form-control {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-inline {
  display: flex;
  align-items: flex-end;
  gap: 1rem;
}

.form-inline .form-group {
  margin-bottom: 0;
  flex: 1;
}

/* Alerts */
.alert {
  padding: 1rem;
  border-radius: 6px;
  margin-bottom: 1rem;
}

.alert-error {
  background-color: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-warning {
  background-color: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
}

.alert-success {
  background-color: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
}

/* Info Box */
.info-box {
  background-color: #f0f9ff;
  border: 1px solid #bae6fd;
  border-radius: 6px;
  padding: 1rem;
  margin-bottom: 1.5rem;
}

/* Token Display */
.token-display {
  display: flex;
  align-items: center;
  gap: 1rem;
  background-color: var(--bg-color);
  padding: 1rem;
  border-radius: 6px;
  margin: 1rem 0;
}

.token-display code {
  flex: 1;
  font-family: 'Monaco', 'Menlo', monospace;
  font-size: 1rem;
  word-break: break-all;
}

.token-preview {
  font-family: 'Monaco', 'Menlo', monospace;
  font-size: 0.875rem;
  background-color: var(--bg-color);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.empty-state p {
  margin-bottom: 0.5rem;
}

/* Pending Commands */
.pending-commands {
  padding: 1rem;
  background-color: #fef3c7;
  border-top: 1px solid #fde68a;
}

.pending-commands h4 {
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.pending-commands ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pending-commands li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 1rem;
  border-top: 1px solid var(--border-color);
}

.pagination-info {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Legend */
.legend {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Text Utilities */
.text-muted {
  color: var(--text-muted);
}

/* Login Page */
.login-page {
  background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-container {
  width: 100%;
  max-width: 400px;
  padding: 1rem;
}

.login-box {
  background-color: var(--card-bg);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.login-header h1 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.login-header p {
  color: var(--text-muted);
}

.login-form .form-group {
  margin-bottom: 1.25rem;
}

/* Error Page */
.error-page {
  text-align: center;
  padding: 4rem 1rem;
}

.error-page h1 {
  font-size: 4rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.error-message {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

/* Footer */
.footer {
  padding: 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
  border-top: 1px solid var(--border-color);
}

/* HTMX Loading Indicator */
.htmx-request {
  opacity: 0.7;
  pointer-events: none;
}

.htmx-request::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--primary-color);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    flex-wrap: wrap;
    height: auto;
    padding: 0.5rem 0;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: center;
    padding: 0.5rem 0;
  }

  .form-inline {
    flex-direction: column;
    align-items: stretch;
  }

  .table {
    font-size: 0.8125rem;
  }

  .table th,
  .table td {
    padding: 0.4rem 0.35rem;
    white-space: nowrap;
  }

  .card-header {
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
  }

  .page-header {
    margin-bottom: 1rem;
  }

  .page-header h1 {
    font-size: 1.25rem;
  }

  .btn-group {
    flex-direction: column;
  }

  .user-badge {
    padding: 0.125rem 0.5rem;
    font-size: 0.8125rem;
  }
}