/* --- Variables de Estilo --- */
:root {
  --color-brand-violet: #5C24C4;
  --color-brand-blue: #141C54;
  
  /* Paleta Oscura Premium */
  --bg-main: #0a0e29;
  --bg-sidebar: #070a20;
  --bg-card: #121844;
  --bg-input: #1b235e;
  --border-color: #242e7c;
  
  /* Colores de Estado */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;
  
  /* Textos */
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  /* Fuentes y Sombras */
  --font-main: 'Outfit', sans-serif;
  --shadow-card: 0 4px 20px 0 rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 10px 30px 0 rgba(92, 36, 196, 0.2);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-main);
  color: var(--text-primary);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
}

/* --- Sidebar --- */
.sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 24px;
  position: fixed;
  height: 100vh;
  z-index: 10;
  transition: var(--transition-normal);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
}

.brand-logo {
  height: 38px;
  width: auto;
  object-fit: contain;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-grow: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  border-radius: 12px;
  transition: var(--transition-fast);
}

.nav-item i {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
}

.nav-item:hover {
  background-color: rgba(92, 36, 196, 0.1);
  color: #fff;
}

.nav-item.active {
  background: linear-gradient(135deg, var(--color-brand-violet), #7c3aed);
  color: #fff;
  box-shadow: 0 4px 15px rgba(92, 36, 196, 0.3);
}

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

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.dot.online {
  background-color: var(--color-success);
  box-shadow: 0 0 8px var(--color-success);
}

.dot.offline {
  background-color: var(--color-danger);
  box-shadow: 0 0 8px var(--color-danger);
}

/* --- Main Content Area --- */
.main-content {
  margin-left: 260px;
  flex-grow: 1;
  padding: 40px;
  min-width: 0; /* previene desbordamiento con tablas */
}

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

#page-title {
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* --- Tab Control --- */
.tab-content {
  display: none;
  animation: fadeIn 0.4s ease;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Cards & Grid --- */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.metric-card {
  display: flex;
  align-items: center;
  gap: 20px;
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.card-icon.violet {
  background-color: rgba(92, 36, 196, 0.15);
  color: #a78bfa;
}

.card-icon.green {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--color-success);
}

.card-icon.red {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--color-danger);
}

.card-icon.orange {
  background-color: rgba(245, 158, 11, 0.15);
  color: var(--color-warning);
}

.card-info h3 {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.metric-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: #fff;
}

/* --- Dashboard Details Layout --- */
.dashboard-details {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  align-items: start;
}

.card-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.card-header h2 {
  font-size: 1.2rem;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* --- Alertas --- */
.alerts-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 350px;
  overflow-y: auto;
}

.alert-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 12px;
  font-size: 0.95rem;
  line-height: 1.4;
  border-left: 4px solid transparent;
}

.alert-item.empty {
  justify-content: center;
  color: var(--text-secondary);
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px dashed var(--border-color);
}

.alert-item.critical {
  background-color: rgba(239, 68, 68, 0.1);
  border-left-color: var(--color-danger);
  color: #fca5a5;
}

.alert-item.warning {
  background-color: rgba(245, 158, 11, 0.1);
  border-left-color: var(--color-warning);
  color: #fde68a;
}

.alert-item.info {
  background-color: rgba(59, 130, 246, 0.1);
  border-left-color: var(--color-info);
  color: #bfdbfe;
}

/* --- Seguridad Resumen --- */
.security-summary {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.security-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(36, 46, 124, 0.4);
}

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

.security-item .label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.security-item .value {
  font-weight: 600;
  font-size: 0.95rem;
}

/* --- Tablas y Listados --- */
.section-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.section-actions h2 {
  font-size: 1.5rem;
  font-weight: 600;
}

.table-card {
  padding: 0;
  overflow: hidden;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

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

.data-table th, .data-table td {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.9rem;
}

.data-table th {
  background-color: rgba(7, 10, 32, 0.4);
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
}

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

.data-table tbody tr {
  transition: background-color var(--transition-fast);
}

.data-table tbody tr:hover {
  background-color: rgba(92, 36, 196, 0.04);
}

/* --- Botones --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-brand-violet), #7c3aed);
  color: #fff;
  box-shadow: 0 4px 12px rgba(92, 36, 196, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #7c3aed, #8b5cf6);
  box-shadow: 0 6px 18px rgba(92, 36, 196, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--border-color);
  color: #fff;
}

.btn-danger {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--color-danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  background-color: var(--color-danger);
  color: #fff;
}

.btn-copy {
  padding: 6px 12px;
  background-color: var(--color-brand-violet);
  color: #fff;
  font-size: 0.8rem;
  border-radius: 6px;
}

.btn-copy:hover {
  background-color: #7c3aed;
}

/* --- Barras de Progreso (Métricas en tabla) --- */
.progress-container {
  width: 130px;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  margin-bottom: 4px;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background-color: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

.progress-fill.green { background-color: var(--color-success); }
.progress-fill.orange { background-color: var(--color-warning); }
.progress-fill.red { background-color: var(--color-danger); }

/* --- Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.badge.online {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--color-success);
}

.badge.offline {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--color-danger);
}

.badge.warning {
  background-color: rgba(245, 158, 11, 0.15);
  color: var(--color-warning);
}

.badge-type {
  background-color: rgba(92, 36, 196, 0.15);
  color: #a78bfa;
  border: 1px solid rgba(92, 36, 196, 0.3);
}

/* --- Modales --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  width: 500px;
  max-width: 90%;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

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

.modal-header h2 {
  font-size: 1.25rem;
  color: #fff;
}

.btn-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.75rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.btn-close:hover {
  color: #fff;
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 20px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

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

.form-group:last-child {
  margin-bottom: 0;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input, .form-group select {
  width: 100%;
  padding: 12px 16px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: #fff;
  font-family: var(--font-main);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus, .form-group select:focus {
  outline: none;
  border-color: var(--color-brand-violet);
  box-shadow: 0 0 0 3px rgba(92, 36, 196, 0.25);
}

.form-group small {
  display: block;
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- Token Container --- */
.token-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: #070a20;
  border: 1px solid var(--border-color);
  padding: 12px 16px;
  border-radius: 10px;
  margin: 16px 0;
}

.token-container code {
  font-family: monospace;
  font-size: 1.05rem;
  color: #a78bfa;
  user-select: all;
  word-break: break-all;
}

/* --- Clases auxiliares --- */
.text-center { text-align: center; }
.text-green { color: var(--color-success); }
.text-red { color: var(--color-danger); }
.text-orange { color: var(--color-warning); }
.text-violet { color: #a78bfa; }