body {
  font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
  margin: 0;
  background: #ffffff;
  color: #222;
  min-height: 100vh;
}


h1, h2 {
  color: #2563eb;
  font-weight: 700;
  letter-spacing: 0.5px;
}


#nodeForm, #nodeFormContainer {
  background-color: #fff;
  padding: 24px 28px;
  margin-bottom: 24px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.08);
}


label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  color: #374151;
}


input[type="text"],
input[type="number"] {
  width: 100%;
  padding: 10px 12px;
  margin-bottom: 14px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  box-sizing: border-box;
  font-size: 1rem;
  background: #f1f5f9;
  transition: border-color 0.2s;
}
input[type="text"]:focus,
input[type="number"]:focus {
  border-color: #2563eb;
  outline: none;
  background: #fff;
}


button, .btn {
  background: linear-gradient(90deg, #2563eb 60%, #60a5fa 100%);
  color: #fff;
  padding: 10px 18px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.08);
  transition: background 0.2s, box-shadow 0.2s;
}
button:hover, .btn:hover {
  background: linear-gradient(90deg, #1d4ed8 60%, #2563eb 100%);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.12);
}


table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 24px;
  background-color: #fff;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.08);
  border-radius: 12px;
  overflow: hidden;
}


th, td {
  border: 1px solid #e5e7eb;
  padding: 12px 14px;
  text-align: left;
}

th {
  background: linear-gradient(90deg, #2563eb 10%, #60a5fa 100%);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.5px;
}


tr:nth-child(even) {
  background-color: #f1f5f9;
}
tr:hover {
  background-color: #e0e7ff;
}


#nodeList button.btn-danger {
  background: linear-gradient(90deg, #dc3545 60%, #f87171 100%);
}
#nodeList button.btn-danger:hover {
  background: linear-gradient(90deg, #b91c1c 60%, #dc2626 100%);
}


.btn-danger {
  background: linear-gradient(90deg, #dc3545 60%, #f87171 100%) !important;
  color: #fff !important;
}
.btn-danger:hover {
  background: linear-gradient(90deg, #b91c1c 60%, #dc2626 100%) !important;
}
.btn-warning {
  background: linear-gradient(90deg, #f59e42 60%, #fbbf24 100%) !important;
  color: #222 !important;
}
.btn-warning:hover {
  background: linear-gradient(90deg, #d97706 60%, #f59e42 100%) !important;
}
.btn-success {
  background: linear-gradient(90deg, #22c55e 60%, #4ade80 100%) !important;
  color: #fff !important;
}
.btn-success:hover {
  background: linear-gradient(90deg, #15803d 60%, #22c55e 100%) !important;
}

/* Badges más modernos */
.badge {
  font-size: 0.95em;
  padding: 0.5em 0.9em;
  border-radius: 1em;
  font-weight: 600;
  box-shadow: 0 1px 4px rgba(37, 99, 235, 0.08);
  letter-spacing: 0.2px;
}

/* Navbar mejorada */
.navbar {
  box-shadow: 0 2px 12px rgba(37, 99, 235, 0.10);
  background: linear-gradient(90deg, #2563eb 60%, #60a5fa 100%) !important;
}
.navbar .navbar-brand, .navbar .nav-link {
  color: #fff !important;
  font-weight: 500;
  letter-spacing: 0.5px;
}
.navbar .nav-link.active, .navbar .nav-link.fw-bold {
  color: #fbbf24 !important;
  font-weight: 700 !important;
}

/* Botón de cerrar sesión */
.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.5) !important;
  color: #fff !important;
  font-weight: 500;
}
.btn-outline-light:hover {
  background-color: rgba(255, 255, 255, 0.1) !important;
  border-color: #fff !important;
  color: #fff !important;
}

/* Footer elegante */
footer {
  background: linear-gradient(90deg, #2563eb 60%, #60a5fa 100%);
  color: #fff;
  text-align: center;
  padding: 18px 0 12px 0;
  font-size: 1.05em;
  letter-spacing: 0.5px;
  margin-top: 48px;
  box-shadow: 0 -2px 12px rgba(37, 99, 235, 0.10);
}

/* Estilos para Dashboard en Tiempo Real */
.dashboard-scroll-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 0;
  max-width: 100%;
}

#nodesContainer {
  display: flex;
  gap: 24px;
  overflow-x: hidden;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  flex: 1;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE 10+ */
  padding: 0 10px;
}

#nodesContainer::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

.node-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(37, 99, 235, 0.12);
  border: 1px solid #e5e7eb;
  transition: transform 0.3s, box-shadow 0.3s;
  overflow: hidden;
  min-height: 520px;
  width: calc((100vw - 180px) / 3 - 24px);
  max-width: 480px;
  min-width: 380px;
  flex-shrink: 0;
}

.dashboard-nav-btn {
  background: linear-gradient(135deg, #2563eb 60%, #60a5fa 100%);
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  color: white;
  font-size: 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
  z-index: 10;
  flex-shrink: 0;
}

.dashboard-nav-btn:hover {
  background: linear-gradient(135deg, #1d4ed8 60%, #2563eb 100%);
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.dashboard-nav-btn:active {
  transform: scale(0.95);
}

.dashboard-nav-btn:disabled {
  background: #d1d5db;
  cursor: not-allowed;
  transform: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.dashboard-nav-btn i {
  margin: 0;
  padding: 0;
}

/* Estilos responsivos para dashboard */
@media (max-width: 1400px) {
  .node-card {
    width: calc((100vw - 160px) / 3 - 24px);
    min-width: 320px;
    max-width: 420px;
  }
}

@media (max-width: 1200px) {
  .node-card {
    width: calc((100vw - 140px) / 2 - 24px);
    min-width: 350px;
    max-width: 450px;
  }
}

@media (max-width: 768px) {
  .dashboard-scroll-wrapper {
    gap: 10px;
  }
  
  .dashboard-nav-btn {
    width: 40px;
    height: 40px;
    font-size: 16px;
  }
  
  .node-card {
    width: calc(100vw - 120px);
    min-width: 280px;
    max-width: none;
  }
  
  #nodesContainer {
    gap: 16px;
    padding: 0 5px;
  }
}

.node-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 48px rgba(37, 99, 235, 0.16);
}

.node-card-header {
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  color: #fff;
  padding: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  font-size: 1.2em;
  text-align: center;
}

.node-card-body {
  padding: 0;
  display: flex;
  flex-direction: column;
  height: calc(100% - 80px);
}

.node-map-container {
  height: 200px;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 2px solid #f1f5f9;
  position: relative;
  overflow: hidden;
}

.node-map-placeholder {
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 30% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 70% 80%, rgba(34, 197, 94, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(168, 85, 247, 0.05) 0%, transparent 50%);
  background-size: 100% 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9em;
  color: #64748b;
  font-weight: 500;
}

.node-map-frame {
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 0;
}

.map-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  background: rgba(255, 255, 255, 0.9);
  padding: 20px;
  border-radius: 8px;
  text-align: center;
}

.node-coordinates {
  position: absolute;
  bottom: 8px;
  left: 12px;
  font-size: 0.75em;
  color: #64748b;
  background: rgba(255, 255, 255, 0.9);
  padding: 4px 8px;
  border-radius: 4px;
  font-weight: 500;
}

.sensor-metrics {
  padding: 20px;
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto auto;
  gap: 16px;
  align-content: start;
}

.metric-large {
  grid-column: span 1;
  text-align: center;
  padding: 20px 16px;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border-radius: 12px;
  border: 1px solid #e2e8f0;
  position: relative;
}

.metric-large.primary {
  grid-column: span 2;
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  color: white;
  transform: scale(1.02);
}

.metric-value {
  font-size: 2.2em;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
  color: #1e293b;
}

.metric-large.primary .metric-value {
  color: white;
  font-size: 2.8em;
}

.metric-label {
  font-size: 0.85em;
  font-weight: 600;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.metric-large.primary .metric-label {
  color: rgba(255, 255, 255, 0.9);
}

.metric-icon {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 1.2em;
  opacity: 0.3;
}

.metric-large.primary .metric-icon {
  opacity: 0.5;
  color: white;
}

.node-status-info {
  grid-column: span 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: #f8fafc;
  border-radius: 8px;
  margin-top: 8px;
}

.status-badge-large {
  padding: 8px 16px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.9em;
  letter-spacing: 0.3px;
}

.status-badge-large.active {
  background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
  color: white;
}

.status-badge-large.inactive {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: white;
}

.last-update {
  font-size: 0.8em;
  color: #64748b;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Controles de navegación horizontal */
.dashboard-nav-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
}

.nav-btn {
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  color: white;
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.nav-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
}

.nav-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
}

.scroll-indicator {
  text-align: center;
  font-size: 0.85em;
  color: #64748b;
  margin-top: 8px;
}

@media (max-width: 768px) {
  .node-card {
    min-height: 480px;
    min-width: 350px;
    max-width: 350px;
  }
  
  .sensor-metrics {
    padding: 16px;
    gap: 12px;
  }
  
  .metric-value {
    font-size: 1.8em;
  }
  
  .metric-large.primary .metric-value {
    font-size: 2.2em;
  }
}