/**
 * Main Event Systems Monitor - Dashboard Styles
 * Dark theme monitoring dashboard with responsive grid layout
 */

/* ============================================================================
   BASE STYLES & RESET
   ============================================================================ */

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

:root {
  /* State Colors */
  --color-green: #22c55e;
  --color-yellow: #eab308;
  --color-orange: #f97316;
  --color-red: #ef4444;
  --color-grey: #9ca3af;
  --color-black: #1f2937;

  /* Background Colors */
  --bg-dark: #0f172a;
  --bg-darker: #020617;
  --bg-card: #1e293b;
  --bg-card-hover: #334155;

  /* Text Colors */
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  /* Border & Divider */
  --border-color: #334155;
  --divider-color: #475569;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-dark);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ============================================================================
   UTILITY CLASSES
   ============================================================================ */

.hidden {
  display: none !important;
}

/* ============================================================================
   STATE OVERLAYS (Loading & Error)
   ============================================================================ */

.state-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.loading-content,
.error-content {
  text-align: center;
  padding: var(--spacing-xl);
}

/* Loading Spinner */
.spinner {
  width: 64px;
  height: 64px;
  border: 4px solid var(--border-color);
  border-top-color: var(--color-green);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--spacing-lg);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Pulse animation for countdown urgency */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.1);
  }
}

.loading-content p {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

/* Error State */
.error-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
}

.error-content h2 {
  font-size: 1.875rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.error-content p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
}

.retry-btn {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  color: white;
  background-color: var(--color-green);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.retry-btn:hover {
  background-color: #16a34a;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.retry-btn:active {
  transform: translateY(0);
}

/* ============================================================================
   MAIN DASHBOARD
   ============================================================================ */

#dashboard {
  max-width: 1600px;
  margin: 0 auto;
  padding: var(--spacing-xl);
  animation: fadeIn 0.5s ease-in-out;
}

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

/* ============================================================================
   HEADER
   ============================================================================ */

.dashboard-header {
  margin-bottom: var(--spacing-2xl);
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.dashboard-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.025em;
}

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

.last-updated {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.refresh-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.refresh-btn:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--color-green);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.refresh-btn svg {
  transition: transform var(--transition-normal);
}

.refresh-btn:active svg {
  transform: rotate(180deg);
}

.auto-refresh-indicator {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: right;
}

/* Countdown emphasis when < 5 seconds */
.countdown-urgent {
  color: var(--color-orange);
  animation: pulse 1s ease-in-out infinite;
}

/* Refresh button spinning during fetch */
.refresh-btn.refreshing svg {
  animation: spin 1s linear infinite;
}

.refresh-btn.refreshing {
  opacity: 0.7;
  pointer-events: none;
}

/* Relative time styling */
.time-ago {
  color: var(--text-muted);
  font-size: 0.85em;
}

/* ============================================================================
   SUMMARY BAR
   ============================================================================ */

.summary-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
  padding: var(--spacing-lg);
  background-color: var(--bg-darker);
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.summary-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  border-radius: 8px;
  transition: all var(--transition-fast);
}

.summary-item:hover {
  background-color: var(--bg-card);
}

.summary-icon {
  font-size: 2rem;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Grey/black SVG icons — sized to match emoji visual weight */
.summary-icon svg {
  width: 30px;
  height: 30px;
}

.summary-count {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--text-primary);
}

.summary-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================================================
   SYSTEM CARDS GRID
   ============================================================================ */

.systems-grid {
  display: grid;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

/* Responsive grid breakpoints */
@media (min-width: 480px) {
  .systems-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .systems-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .systems-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1280px) {
  .systems-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

@media (min-width: 1536px) {
  .systems-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

/* System Card */
.system-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--border-color);
  border-radius: 10px;
  padding: var(--spacing-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.system-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background-color: var(--bg-card-hover);
}

/* State-specific border colors */
.system-card[data-state="green"] {
  border-left-color: var(--color-green);
}

.system-card[data-state="yellow"] {
  border-left-color: var(--color-yellow);
}

.system-card[data-state="orange"] {
  border-left-color: var(--color-orange);
}

.system-card[data-state="red"] {
  border-left-color: var(--color-red);
  animation: pulse-red 2s ease-in-out infinite;
}

.system-card[data-state="grey"] {
  border-left-color: var(--color-grey);
}

.system-card[data-state="black"] {
  border-left-color: var(--color-black);
  animation: pulse-black 2s ease-in-out infinite;
}

/* Pulse animations for critical states */
@keyframes pulse-red {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(239, 68, 68, 0.3);
  }
}

@keyframes pulse-black {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(31, 41, 55, 0);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(31, 41, 55, 0.5);
  }
}

.card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.status-indicator {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 8px currentColor;
}

.status-green {
  background-color: var(--color-green);
  color: var(--color-green);
}

.status-yellow {
  background-color: var(--color-yellow);
  color: var(--color-yellow);
}

.status-orange {
  background-color: var(--color-orange);
  color: var(--color-orange);
}

.status-red {
  background-color: var(--color-red);
  color: var(--color-red);
}

.status-grey {
  background-color: var(--color-grey);
  color: var(--color-grey);
}

.status-black {
  background-color: #111827;
  color: #4b5563;
  border: 2px solid #4b5563;
}

.system-name {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.failure-rate {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-sm);
}

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

.rate-trend {
  font-size: 0.875rem;
  font-weight: 600;
}

.trend-up {
  color: var(--color-red);
}

.trend-down {
  color: var(--color-green);
}

.trend-stable {
  color: var(--text-muted);
}

.confidence-level {
  display: flex;
  gap: var(--spacing-sm);
  font-size: 0.75rem;
}

.confidence-label {
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.confidence-value {
  font-weight: 600;
  color: var(--text-secondary);
}

/* Sparkline in system card */
.card-sparkline {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) 0;
}

.sparkline {
  display: block;
  flex-shrink: 0;
}

.sparkline-line {
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sparkline-area {
  fill-opacity: 0.15;
  stroke: none;
}

/* Sparkline state colors */
.sparkline-line[data-state="red"],
.sparkline-area[data-state="red"] {
  stroke: var(--color-red);
  fill: var(--color-red);
}

.sparkline-line[data-state="orange"],
.sparkline-area[data-state="orange"] {
  stroke: var(--color-orange);
  fill: var(--color-orange);
}

.sparkline-line[data-state="yellow"],
.sparkline-area[data-state="yellow"] {
  stroke: var(--color-yellow);
  fill: var(--color-yellow);
}

.sparkline-line[data-state="green"],
.sparkline-area[data-state="green"] {
  stroke: var(--color-green);
  fill: var(--color-green);
}

.sparkline-line[data-state="grey"],
.sparkline-area[data-state="grey"] {
  stroke: var(--color-grey);
  fill: var(--color-grey);
}

.sparkline-line[data-state="black"],
.sparkline-area[data-state="black"] {
  stroke: var(--text-muted);
  fill: var(--text-muted);
}

/* Call counts in system card */
.card-calls {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  text-align: center;
}

.calls-success {
  color: var(--color-green);
  font-weight: 600;
}

.calls-failure {
  color: var(--color-red);
  font-weight: 600;
}

.calls-muted {
  color: var(--text-muted);
  font-style: italic;
}

/* ============================================================================
   FOOTER
   ============================================================================ */

.dashboard-footer {
  text-align: center;
  padding: var(--spacing-xl) 0;
  color: var(--text-muted);
  font-size: 0.875rem;
  border-top: 1px solid var(--border-color);
}

/* ============================================================================
   DETAIL MODAL
   ============================================================================ */

.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--shadow-xl);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

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

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: 6px;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.modal-body {
  padding: var(--spacing-xl);
}

.modal-divider {
  border: none;
  border-top: 1px solid var(--divider-color);
  margin: var(--spacing-xl) 0;
}

/* Platform Status */
.platform-status {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.platform-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: var(--bg-darker);
  border-radius: 6px;
}

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

.platform-state {
  font-size: 0.875rem;
  font-weight: 700;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 4px;
}

.platform-state[data-state="green"] {
  color: var(--color-green);
  background-color: rgba(34, 197, 94, 0.1);
}

.platform-state[data-state="yellow"] {
  color: var(--color-yellow);
  background-color: rgba(234, 179, 8, 0.1);
}

.platform-state[data-state="orange"] {
  color: var(--color-orange);
  background-color: rgba(249, 115, 22, 0.1);
}

.platform-state[data-state="red"] {
  color: var(--color-red);
  background-color: rgba(239, 68, 68, 0.1);
}

.platform-state[data-state="grey"] {
  color: var(--color-grey);
  background-color: rgba(107, 114, 128, 0.1);
}

.platform-state[data-state="black"] {
  color: var(--text-primary);
  background-color: var(--color-black);
}

/* Section Titles */
.section-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

/* Endpoint List */
.endpoint-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.endpoint-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background-color: var(--bg-darker);
  border-radius: 6px;
  border-left: 3px solid transparent;
}

.endpoint-item[data-state="green"] {
  border-left-color: var(--color-green);
}

.endpoint-item[data-state="yellow"] {
  border-left-color: var(--color-yellow);
}

.endpoint-item[data-state="orange"] {
  border-left-color: var(--color-orange);
}

.endpoint-item[data-state="red"] {
  border-left-color: var(--color-red);
}

.endpoint-item[data-state="grey"] {
  border-left-color: var(--color-grey);
}

.endpoint-item[data-state="black"] {
  border-left-color: var(--color-black);
}

.endpoint-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.endpoint-item[data-state="green"] .endpoint-indicator {
  background-color: var(--color-green);
}

.endpoint-item[data-state="yellow"] .endpoint-indicator {
  background-color: var(--color-yellow);
}

.endpoint-item[data-state="orange"] .endpoint-indicator {
  background-color: var(--color-orange);
}

.endpoint-item[data-state="red"] .endpoint-indicator {
  background-color: var(--color-red);
}

.endpoint-item[data-state="grey"] .endpoint-indicator {
  background-color: var(--color-grey);
}

.endpoint-item[data-state="black"] .endpoint-indicator {
  background-color: #111827;
  border: 2px solid #4b5563;
}

.endpoint-name {
  flex: 1;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.endpoint-state {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.endpoint-rate {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Call counts in endpoint items */
.endpoint-calls {
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
}

/* History Timeline */
.history-timeline {
  min-height: 150px;
}

.timeline-placeholder {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-muted);
  font-style: italic;
}

.timeline-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.timeline-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.timeline-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* State Bar */
.state-bar {
  display: flex;
  height: 40px;
  background-color: var(--bg-darker);
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.state-segment {
  flex: 1;
  position: relative;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.state-segment[data-state="green"] {
  background-color: var(--color-green);
}

.state-segment[data-state="yellow"] {
  background-color: var(--color-yellow);
}

.state-segment[data-state="orange"] {
  background-color: var(--color-orange);
}

.state-segment[data-state="red"] {
  background-color: var(--color-red);
}

.state-segment[data-state="grey"] {
  background-color: var(--color-grey);
}

.state-segment[data-state="black"] {
  background-color: #111827;
  outline: 1px solid #4b5563;
}

.state-segment:hover {
  opacity: 0.8;
  transform: scaleY(1.1);
  z-index: 1;
}

.state-segment:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--bg-card);
  color: var(--text-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 6px;
  border: 1px solid var(--border-color);
  white-space: pre-line;
  font-size: 0.75rem;
  box-shadow: var(--shadow-lg);
  z-index: 10;
  pointer-events: none;
  min-width: 120px;
  text-align: center;
}

/* Failure Rate Chart */
.failure-chart-container {
  position: relative;
  width: 100%;
  background-color: var(--bg-darker);
  border-radius: 6px;
  border: 1px solid var(--border-color);
  padding: var(--spacing-md);
  display: flex;
  gap: var(--spacing-md);
}

.failure-chart {
  flex: 1;
  display: block;
}

.grid-line {
  stroke: #1e293b;
  stroke-width: 0.2;
  stroke-dasharray: 2 2;
}

.failure-chart-area {
  fill: #60a5fa;
  fill-opacity: 0.1;
  stroke: none;
}

.failure-chart-line {
  fill: none;
  stroke: #60a5fa;
  stroke-width: 0.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.y-axis-labels {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-end;
  min-width: 40px;
}

.y-axis-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Time Labels */
.time-labels {
  display: flex;
  justify-content: space-between;
  padding: 0 var(--spacing-sm);
}

.time-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ============================================================================
   RESPONSIVE ADJUSTMENTS
   ============================================================================ */

@media (max-width: 768px) {
  #dashboard {
    padding: var(--spacing-md);
  }

  .dashboard-title {
    font-size: 1.75rem;
  }

  .header-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .summary-bar {
    grid-template-columns: repeat(2, 1fr);
  }

  .modal-content {
    margin: var(--spacing-md);
  }

  .platform-status {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .dashboard-title {
    font-size: 1.5rem;
  }

  .summary-bar {
    grid-template-columns: 1fr;
  }

  .systems-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================================
   SCROLLBAR STYLING (for webkit browsers)
   ============================================================================ */

::-webkit-scrollbar {
  width: 12px;
}

::-webkit-scrollbar-track {
  background-color: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
  background-color: var(--border-color);
  border-radius: 6px;
  border: 3px solid var(--bg-darker);
}

::-webkit-scrollbar-thumb:hover {
  background-color: var(--divider-color);
}