/* ===========================
   Global Styles
   =========================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --secondary: #64748b;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #06b6d4;
  --dark: #1e293b;
  --light: #f1f5f9;
  --border: #e2e8f0;
  --text: #334155;
  --text-muted: #64748b;
}

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

/* ===========================
   Login Page
   =========================== */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
  width: 100%;
  max-width: 400px;
  padding: 20px;
}

.login-box {
  background: white;
  border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  padding: 40px;
}

.logo {
  text-align: center;
  margin-bottom: 30px;
}

.logo h1 {
  font-size: 32px;
  color: var(--primary);
  margin-bottom: 5px;
}

.logo p {
  color: var(--text-muted);
  font-size: 14px;
}

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

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
  color: var(--text);
}

.form-group input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 14px;
  transition: border-color 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

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

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

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

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

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

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.alert {
  padding: 12px;
  border-radius: 4px;
  margin-top: 15px;
}

.alert-error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.alert-info {
  background: #dbeafe;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

.login-footer {
  margin-top: 30px;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
}

.login-footer p {
  margin: 5px 0;
}

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

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.6s linear infinite;
}

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

/* ===========================
   Admin Panel
   =========================== */
.admin-page {
  background: var(--light);
  min-height: 100vh;
}

.navbar {
  background: white;
  border-bottom: 1px solid var(--border);
  padding: 0;
}

.navbar-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
}

.navbar-brand {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
  margin-right: 30px;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 5px;
  flex: 1;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 18px 16px;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  border-bottom: 3px solid transparent;
}

.nav-link:hover {
  background: var(--light);
  color: var(--primary);
}

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

.nav-link svg {
  width: 16px;
  height: 16px;
}

.dropdown {
  position: relative;
}

.dropdown-toggle::after {
  content: '▼';
  font-size: 10px;
  margin-left: 5px;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: white;
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  min-width: 180px;
  padding: 8px 0;
  display: none;
  z-index: 1000;
  margin-top: -3px;
}

.dropdown:hover .dropdown-menu,
.dropdown-menu.show {
  display: block;
}

.dropdown-item {
  display: block;
  padding: 10px 16px;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s;
}

.dropdown-item:hover {
  background: var(--light);
  color: var(--primary);
}

.navbar-user {
  display: flex;
  align-items: center;
  gap: 15px;
}

.user-info {
  text-align: right;
}

.user-name {
  font-weight: 500;
  color: var(--text);
}

.user-role {
  font-size: 12px;
  color: var(--text-muted);
}

/* View sections */
.view-section {
  display: none;
}

.view-section.active {
  display: block;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 30px 20px;
}

.page-header {
  margin-bottom: 30px;
}

.page-header h1 {
  font-size: 28px;
  color: var(--dark);
  margin-bottom: 5px;
}

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

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background: white;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 5px;
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--dark);
}

.stat-footer {
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-muted);
}

.card {
  background: white;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
}

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

.card-header h2 {
  font-size: 18px;
  color: var(--dark);
  font-weight: 600;
}

.card-body {
  padding: 20px;
}

/* Collapsible Cards */
.card.collapsible .card-header {
  cursor: pointer;
  user-select: none;
  transition: background 0.2s;
  display: flex;
  align-items: center;
  gap: 15px;
}

.card.collapsible .card-header:hover {
  background: var(--light);
}

.card.collapsible .card-header h2 {
  flex: 1;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Status badges stay visible even when collapsed */
.card-header .badge {
  flex-shrink: 0;
}

.collapse-icon {
  font-size: 14px;
  transition: transform 0.3s;
  color: var(--text-muted);
  flex-shrink: 0;
  width: 20px;
  text-align: center;
}

.card.collapsed .collapse-icon {
  transform: rotate(-90deg);
}

/* Hide body when collapsed */
.card.collapsed .card-body {
  display: none;
}

/* Collapsed cards have tighter spacing */
.card.collapsed {
  margin-bottom: 8px;
}

/* Visual indicator that card is interactive */
.card.collapsible .card-header::before {
  content: '';
  width: 3px;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  background: var(--primary);
  opacity: 0;
  transition: opacity 0.2s;
}

.card.collapsible .card-header:hover::before {
  opacity: 1;
}

.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

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

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

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

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

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

.table th,
.table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.table th {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 12px;
  text-transform: uppercase;
}

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

.btn-group {
  display: flex;
  gap: 10px;
}

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

.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.grid {
  display: grid;
  gap: 20px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
}

.status-indicator {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 8px;
}

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

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

.status-error {
  background: var(--danger);
}

.info-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.info-row:last-child {
  border-bottom: none;
}

.info-label {
  font-weight: 500;
  color: var(--text-muted);
}

.info-value {
  font-weight: 600;
  color: var(--dark);
}

/* Responsive */
@media (max-width: 768px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }

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

  .navbar-container {
    flex-direction: column;
    gap: 15px;
  }
}