:root {
  --bg-primary: #0F172A;
  --bg-surface: #1E293B;
  --bg-card: #243248;
  --bg-card-hover: #2D3D58;
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --accent-color: #3B82F6;
  --accent-hover: #2563EB;
  --success-color: #10B981;
  --warning-color: #F59E0B;
  --border-color: #334155;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --transition: all 0.2s ease-in-out;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* Encabezado */
.navbar {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.brand-icon {
  background: linear-gradient(135deg, var(--accent-color), #60A5FA);
  color: white;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.brand-text h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.brand-text span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(16, 185, 129, 0.1);
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--success-color);
  box-shadow: 0 0 8px var(--success-color);
}

.status-label {
  font-size: 0.85rem;
  color: #34D399;
  font-weight: 500;
}

/* Tarjetas de Estadísticas */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-color);
}

.stat-icon {
  background-color: var(--bg-card);
  color: var(--accent-color);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Estructura Principal */
.main-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 1.5rem;
}

@media (max-width: 992px) {
  .main-layout {
    grid-template-columns: 1fr;
  }
}

/* Barra Lateral de Dispositivos */
.sidebar {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  height: fit-content;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.section-header h2 {
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-refresh {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.btn-refresh:hover {
  color: var(--accent-color);
  background-color: var(--bg-card);
}

.device-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.device-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1rem;
  cursor: pointer;
  transition: var(--transition);
}

.device-card:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--accent-color);
}

.device-card.active {
  border-color: var(--accent-color);
  background-color: #1e3a8a33;
}

.device-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 6px;
}

.device-name {
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-main);
}

.device-status {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
}

.device-status.online {
  background-color: rgba(16, 185, 129, 0.2);
  color: #34D399;
}

.device-status.offline {
  background-color: rgba(148, 163, 184, 0.2);
  color: #94A3B8;
}

.device-model {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.device-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--text-muted);
  background-color: rgba(0, 0, 0, 0.2);
  padding: 6px 10px;
  border-radius: 6px;
}

.device-stats strong {
  color: var(--text-main);
}

/* Filtros y Búsqueda */
.filters-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}

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

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.filter-group label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.filter-group input,
.filter-group select {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition);
}

.filter-group input:focus,
.filter-group select:focus {
  border-color: var(--accent-color);
}

.search-group {
  flex: 1;
  min-width: 220px;
  position: relative;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 36px;
  color: var(--text-muted);
}

.search-group input {
  padding-left: 36px;
}

.btn {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

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

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

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

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
}

/* Galería de Fotografías */
.gallery-section {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.gallery-header {
  margin-bottom: 1.25rem;
}

.gallery-header h3 {
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge {
  background-color: var(--accent-color);
  color: white;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 12px;
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.photo-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.photo-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-color);
}

.photo-thumb-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  background-color: #0b1120;
  overflow: hidden;
}

.photo-thumb-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.photo-card:hover .photo-thumb-wrapper img {
  transform: scale(1.05);
}

.photo-details {
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.photo-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.photo-device-tag {
  font-size: 0.75rem;
  color: var(--accent-color);
  display: flex;
  align-items: center;
  gap: 4px;
}

.photo-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.pagination-wrapper {
  text-align: center;
  margin-top: 1.5rem;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal.active {
  display: flex;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow: hidden;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  z-index: 10;
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.6);
  border: none;
  color: white;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
}

.modal-body {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
}

@media (max-width: 768px) {
  .modal-body {
    grid-template-columns: 1fr;
  }
}

.modal-image-wrapper {
  background-color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 350px;
}

.modal-image-wrapper img {
  max-width: 100%;
  max-height: 70vh;
  object-fit: contain;
}

.modal-info {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-info h4 {
  font-size: 1.1rem;
  word-break: break-all;
}

.info-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.info-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.info-val {
  font-size: 0.9rem;
  color: var(--text-main);
}

.info-val.mono {
  font-family: monospace;
  font-size: 0.75rem;
  word-break: break-all;
  background-color: var(--bg-card);
  padding: 4px 6px;
  border-radius: 4px;
}

.modal-actions {
  margin-top: 1rem;
}

.loading-spinner {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  grid-column: 1 / -1;
}

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

.empty-state i {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  display: block;
}