/* StackScope Dashboard - Main Styles */

:root {
  /* Light theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #e2e8f0;
  --text-primary: #1a202c;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --border-color: #e2e8f0;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.1);
  
  /* Accent colors */
  --accent-primary: #3182ce;
  --accent-secondary: #63b3ed;
  --success: #38a169;
  --warning: #d69e2e;
  --error: #e53e3e;
  --info: #3182ce;
  
  /* Status indicators */
  --status-online: #38a169;
  --status-offline: #e53e3e;
  --status-warning: #d69e2e;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  
  /* Transitions */
  --transition: all 0.2s ease;
}

/* Dark theme */
[data-theme="dark"] {
  --bg-primary: #1a202c;
  --bg-secondary: #2d3748;
  --bg-tertiary: #4a5568;
  --text-primary: #f7fafc;
  --text-secondary: #e2e8f0;
  --text-muted: #a0aec0;
  --border-color: #4a5568;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.3);
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: var(--transition);
}

/* App layout */
.app {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto auto 1fr;
  grid-template-areas: 
    "header"
    "nav" 
    "main";
}

/* Header */
.header {
  grid-area: header;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-xl);
  max-width: 1400px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.logo-icon {
  font-size: 2rem;
}

.logo h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.version {
  background-color: var(--bg-tertiary);
  color: var(--text-muted);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 500;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

/* Connection status */
.connection-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

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

.status-dot.online { background-color: var(--status-online); }
.status-dot.offline { background-color: var(--status-offline); }
.status-dot.warning { background-color: var(--status-warning); }

.status-text {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

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

/* Theme toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
}

.theme-toggle:hover {
  background-color: var(--bg-tertiary);
}

.theme-icon {
  font-size: 1.2rem;
}

/* Navigation */
.nav {
  grid-area: nav;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 0 var(--spacing-xl);
}

.nav-list {
  display: flex;
  list-style: none;
  max-width: 1400px;
  margin: 0 auto;
  overflow-x: auto;
}

.nav-link {
  display: block;
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 3px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--accent-primary);
  background-color: var(--bg-secondary);
}

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

/* Main content */
.main {
  grid-area: main;
  padding: var(--spacing-xl);
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
  overflow-x: auto;
}

/* Views */
.view {
  display: none;
}

.view.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

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

.view-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

.view-header h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.view-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Buttons */
button {
  background-color: var(--accent-primary);
  color: white;
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

button:hover {
  background-color: var(--accent-secondary);
  transform: translateY(-1px);
}

button:active {
  transform: translateY(0);
}

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

button.secondary:hover {
  background-color: var(--bg-tertiary);
}

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

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

.clear-btn, .export-btn {
  background-color: var(--error);
}

/* Form elements */
input, select, textarea {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

.search-input {
  min-width: 200px;
}

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

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

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.stat-card.error {
  border-left: 4px solid var(--error);
}

.stat-icon {
  font-size: 2rem;
  opacity: 0.8;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Charts */
.charts-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.chart-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow);
  height: 300px;
  display: flex;
  flex-direction: column;
}

.chart-card canvas {
  max-height: 250px !important;
  flex: 1;
}

.chart-card h3 {
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  font-weight: 600;
}

/* Loading overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  transition: var(--transition);
}

[data-theme="dark"] .loading-overlay {
  background-color: rgba(26, 32, 44, 0.9);
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--bg-tertiary);
  border-top: 4px solid var(--accent-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

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

/* Empty states */
.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--text-muted);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  display: block;
}

/* Responsive design */
@media (max-width: 768px) {
  .header-content {
    padding: var(--spacing-md);
  }
  
  .logo h1 {
    font-size: 1.25rem;
  }
  
  .main {
    padding: var(--spacing-md);
  }
  
  .view-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  
  .view-controls {
    width: 100%;
    justify-content: flex-end;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .charts-row {
    grid-template-columns: 1fr;
  }
  
  .nav-list {
    padding: 0 var(--spacing-md);
  }
}