/* ===== CSS Variables for Theme ===== */
:root {
  /* Colors */
  --primary-color: #2c3e50;
  --primary-light: #34495e;
  --primary-dark: #1a252f;
  --secondary-color: #3498db;
  --accent-color: #e74c3c;
  --success-color: #27ae60;
  --warning-color: #f39c12;
  --danger-color: #e74c3c;
  
  /* Neutral Colors */
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #ecf0f1;
  --text-primary: #2c3e50;
  --text-secondary: #7f8c8d;
  --text-muted: #95a5a6;
  --border-color: #dfe6e9;
  --shadow-color: rgba(0, 0, 0, 0.1);
  
  /* Typography */
  --font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Icons */
  --icon-sun: "☀️";
  --icon-device: "📟";
  --icon-connection: "🔗";
  --icon-chart: "📊";
  --icon-analytics: "📈";
  --icon-download: "📥";
  --icon-refresh: "🔄";
  --icon-table: "📋";
  --icon-time: "🕒";
  --icon-eye: "👁️";
  --icon-eye-hidden: "🙈";
}

/* ===== Reset & Base Styles ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ===== Layout Components ===== */
.dashboard-header {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  padding: var(--space-6) 0;
  box-shadow: 0 4px 6px var(--shadow-color);
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.logo-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.dashboard-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.logo-icon {
  font-size: var(--font-size-2xl);
}

.dashboard-subtitle {
  font-size: var(--font-size-sm);
  opacity: 0.9;
  font-weight: 400;
}

.device-info {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.device-badge {
  background: rgba(255, 255, 255, 0.1);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.badge-icon {
  font-size: var(--font-size-lg);
}

/* ===== Status Indicator ===== */
.status-container {
  max-width: 1200px;
  margin: var(--space-6) auto;
  padding: 0 var(--space-6);
}

.status-indicator {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
  border-left: 4px solid transparent;
}

.status-indicator.connected {
  background: rgba(39, 174, 96, 0.1);
  border-left-color: var(--success-color);
  color: var(--success-color);
}

.status-indicator.disconnected {
  background: rgba(231, 76, 60, 0.1);
  border-left-color: var(--danger-color);
  color: var(--danger-color);
}

.status-content {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.status-icon {
  font-size: var(--font-size-xl);
}

.status-text {
  font-weight: 600;
  flex: 1;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.status-indicator.connected .status-dot {
  background: var(--success-color);
}

.status-indicator.disconnected .status-dot {
  background: var(--danger-color);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ===== Main Content ===== */
.dashboard-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6) var(--space-12);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.dashboard-section {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: 0 2px 4px var(--shadow-color);
  border: 1px solid var(--border-color);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.section-icon {
  font-size: var(--font-size-xl);
}

.section-stats {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
}

.stat-value {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--primary-color);
}

.section-actions {
  display: flex;
  gap: var(--space-3);
}

/* ===== Tab Navigation ===== */
.tab-navigation {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  border-bottom: 2px solid var(--border-color);
  padding-bottom: var(--space-2);
}

.tab-button {
  background: none;
  border: none;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  font-family: inherit;
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-secondary);
  position: relative;
}

.tab-button:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.tab-button.active {
  background: var(--secondary-color);
  color: white;
}

.tab-button.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--secondary-color);
}

.tab-icon {
  font-size: var(--font-size-base);
}

.tab-count {
  background: rgba(255, 255, 255, 0.2);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 700;
  min-width: 24px;
  text-align: center;
}

.tab-button.active .tab-count {
  background: rgba(255, 255, 255, 0.3);
}

/* ===== Tab Content ===== */
.tab-content {
  position: relative;
}

.tab-pane {
  display: none;
  animation: fadeIn var(--transition-normal);
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ===== Sensor Grid ===== */
.sensor-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
}

.sensor-placeholder {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-12);
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  border: 2px dashed var(--border-color);
}

.placeholder-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.placeholder-text {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.placeholder-subtext {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.sensor-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.sensor-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--shadow-color);
  border-color: var(--secondary-color);
}

.sensor-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--secondary-color);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.sensor-card:hover::before {
  transform: scaleX(1);
}

.sensor-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
  gap: var(--space-2);
}

.sensor-channel-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: var(--space-2) var(--space-3);
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  text-align: center;
  flex: 1;
}

.visibility-toggle {
  background: none;
  border: none;
  font-size: var(--font-size-lg);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
}

.visibility-toggle:hover {
  background: var(--bg-tertiary);
  transform: scale(1.1);
}

.visibility-toggle:active {
  transform: scale(0.95);
}

/* Hidden sensor cards */
.sensor-card.hidden {
  opacity: 0.4;
  transform: scale(0.98);
}

.sensor-card.hidden .sensor-header {
  opacity: 0.7;
}

.sensor-card.hidden .sensor-value,
.sensor-card.hidden .sensor-timestamp {
  opacity: 0.5;
}

.editable-label {
  width: 100%;
  font-size: var(--font-size-sm);
  padding: var(--space-3);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  background: var(--bg-secondary);
  transition: all var(--transition-fast);
  font-family: inherit;
}

.editable-label:focus {
  border-color: var(--secondary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.editable-label:hover {
  border-color: var(--secondary-color);
}

.sensor-channel {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}

.sensor-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.value-online {
  color: var(--success-color);
}

.value-offline {
  color: var(--danger-color);
}

.value-numeric {
  color: var(--secondary-color);
}

.sensor-timestamp {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.sensor-timestamp::before {
  content: '🕒';
  font-size: var(--font-size-sm);
}

/* ===== Structured Sensor Cards ===== */
.sensor-card.structured-sensor {
  padding: var(--space-6);
}

.sensor-data-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.sensor-data-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.data-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-value {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--secondary-color);
}

.voltage-value {
  color: var(--success-color);
}

.current-value {
  color: var(--warning-color);
}

/* ===== Raw JSON Display ===== */
.raw-json-container {
  margin-top: var(--space-4);
  margin-bottom: var(--space-4);
}

.json-summary {
  padding: var(--space-3);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  transition: background-color var(--transition-fast);
  list-style: none;
  font-size: var(--font-size-sm);
}

.json-summary:hover {
  background: var(--border-color);
}

.json-summary::-webkit-details-marker {
  display: none;
}

.json-icon {
  font-size: var(--font-size-base);
}

.json-arrow {
  margin-left: auto;
  transition: transform var(--transition-fast);
}

.raw-json-container[open] .json-arrow {
  transform: rotate(180deg);
}

.raw-json {
  margin-top: var(--space-3);
  padding: var(--space-4);
  background: var(--primary-dark);
  color: white;
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
}

/* ===== Historical Controls ===== */
.historical-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  align-items: end;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.control-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

.control-select {
  padding: var(--space-3);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  font-family: inherit;
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast);
}

.control-select:focus {
  border-color: var(--secondary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

/* ===== Buttons ===== */
.btn-primary, .btn-secondary {
  padding: var(--space-3) var(--space-5);
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  height: fit-content;
}

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

.btn-primary:hover {
  background: #2980b9;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--border-color);
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.btn-icon {
  font-size: var(--font-size-base);
}

/* ===== Chart Container ===== */
.chart-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
  position: relative;
}

.chart-container canvas {
  max-width: 100%;
}

/* ===== Data Table ===== */
.data-table-container {
  margin-top: var(--space-6);
}

.table-summary {
  padding: var(--space-4);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  transition: background-color var(--transition-fast);
  list-style: none;
}

.table-summary:hover {
  background: var(--border-color);
}

.table-summary::-webkit-details-marker {
  display: none;
}

.summary-icon {
  font-size: var(--font-size-lg);
}

.summary-arrow {
  margin-left: auto;
  transition: transform var(--transition-fast);
}

.data-table-container[open] .summary-arrow {
  transform: rotate(180deg);
}

.table-wrapper {
  margin-top: var(--space-4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.data-table th {
  background: var(--bg-tertiary);
  padding: var(--space-4);
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
}

.data-table td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

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

.live-log-filter {
  margin-left: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-primary);
  min-width: 260px;
}

.live-card-grid {
  margin-top: var(--space-4);
}

.live-card-placeholder {
  text-align: center;
  padding: var(--space-6) var(--space-4);
  color: var(--text-muted);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
}

/* Status badges for data table */
.status-badge {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-badge.online {
  background: rgba(39, 174, 96, 0.1);
  color: var(--success-color);
  border: 1px solid rgba(39, 174, 96, 0.3);
}

.status-badge.offline {
  background: rgba(231, 76, 60, 0.1);
  color: var(--danger-color);
  border: 1px solid rgba(231, 76, 60, 0.3);
}

.status-badge.active {
  background: rgba(52, 152, 219, 0.1);
  color: var(--secondary-color);
  border: 1px solid rgba(52, 152, 219, 0.3);
}

/* ===== Footer ===== */
.dashboard-footer {
  background: var(--primary-dark);
  color: white;
  padding: var(--space-4) 0;
  margin-top: auto;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.footer-text {
  font-size: var(--font-size-sm);
  opacity: 0.8;
}

.footer-separator {
  opacity: 0.5;
}

.footer-stats {
  display: flex;
  gap: var(--space-4);
}

.footer-stat {
  font-size: var(--font-size-sm);
  opacity: 0.8;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    text-align: center;
    gap: var(--space-4);
  }
  
  .device-info {
    justify-content: center;
  }
  
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }
  
  .section-stats {
    width: 100%;
    justify-content: space-between;
  }
  
  .sensor-grid {
    grid-template-columns: 1fr;
  }
  
  .historical-controls {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: var(--space-3);
  }
  
  .dashboard-section {
    padding: var(--space-6);
  }
  
  .dashboard-main {
    padding: 0 var(--space-4) var(--space-8);
  }
}

@media (max-width: 480px) {
  :root {
    --space-6: 1rem;
    --space-8: 1.5rem;
  }
  
  .dashboard-title {
    font-size: var(--font-size-2xl);
  }
  
  .section-title {
    font-size: var(--font-size-xl);
  }
  
  .sensor-value {
    font-size: var(--font-size-xl);
  }
}

/* ===== Loading States ===== */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--border-color);
  border-top: 2px solid var(--secondary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ===== Search and Filter Controls ===== */
.search-filter-controls {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  align-items: end;
}

.search-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.search-input {
  padding: var(--space-3);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  font-family: inherit;
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%237f8c8d' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'%3E%3C/circle%3E%3Cpath d='m21 21-4.3-4.3'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: var(--space-3) center;
  background-size: 16px;
  padding-left: calc(var(--space-3) + 20px);
}

.search-input:focus {
  border-color: var(--secondary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  min-width: 150px;
}

.filter-select {
  padding: var(--space-3);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  font-family: inherit;
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast);
}

.filter-select:focus {
  border-color: var(--secondary-color);
  outline: none;
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

/* ===== Toast Notifications ===== */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 400px;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  animation: slideInRight 0.3s ease, fadeOut 0.3s ease 4.7s forwards;
  position: relative;
  overflow: hidden;
}

.toast::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
}

.toast-success {
  border-left-color: var(--success-color);
}

.toast-success::before {
  background: var(--success-color);
}

.toast-error {
  border-left-color: var(--danger-color);
}

.toast-error::before {
  background: var(--danger-color);
}

.toast-warning {
  border-left-color: var(--warning-color);
}

.toast-warning::before {
  background: var(--warning-color);
}

.toast-info {
  border-left-color: var(--secondary-color);
}

.toast-info::before {
  background: var(--secondary-color);
}

.toast-content {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.toast-icon {
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.toast-message {
  flex: 1;
  font-size: var(--font-size-sm);
  line-height: 1.4;
  color: var(--text-primary);
}

.toast-close {
  background: none;
  border: none;
  font-size: var(--font-size-lg);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
  color: var(--text-muted);
  flex-shrink: 0;
  line-height: 1;
}

.toast-close:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes fadeOut {
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

/* ===== Stale Data Indicators ===== */
.sensor-stale {
  position: relative;
  opacity: 0.7;
}

.sensor-stale::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(243, 156, 18, 0.05);
  pointer-events: none;
  border-radius: var(--radius-lg);
}

.stale-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  background: rgba(243, 156, 18, 0.1);
  color: var(--warning-color);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  margin-left: var(--space-2);
  border: 1px solid rgba(243, 156, 18, 0.2);
}

/* ===== Connection Health Indicators ===== */
.connection-health {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
}

.health-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: healthPulse 2s infinite;
}

.health-good {
  background: var(--success-color);
}

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

.health-poor {
  background: var(--danger-color);
}

@keyframes healthPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ===== Performance Optimizations ===== */
.sensor-card {
  will-change: transform;
  contain: layout style paint;
}

.sensor-grid {
  will-change: contents;
}

/* ===== Enhanced Responsive Design ===== */
@media (max-width: 768px) {
  .search-filter-controls {
    grid-template-columns: 1fr;
  }
  
  .toast-container {
    top: 10px;
    right: 10px;
    left: 10px;
    max-width: none;
  }
  
  .toast {
    margin: 0;
  }
}

@media (max-width: 480px) {
  .search-filter-controls {
    gap: var(--space-3);
  }
  
  .toast-content {
    gap: var(--space-2);
  }
  
  .toast {
    padding: var(--space-3);
  }
}

/* ===== Print Styles ===== */
@media print {
  .dashboard-header {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
  }
  
  .status-container,
  .section-actions,
  .historical-controls,
  .dashboard-footer,
  .search-filter-controls,
  .toast-container {
    display: none !important;
  }
  
  .sensor-card {
    break-inside: avoid;
    box-shadow: none !important;
    border: 1px solid #ccc !important;
  }
}