/**
 * PC Power Simulator - Precision Engineering Theme
 * Clean, technical, icon-rich, animated
 */

:root {
  /* Core Palette - Deep Anthracite */
  --bg-primary: #09090b;
  --bg-secondary: #121215;
  --bg-tertiary: #18181b;
  --bg-elevated: #27272a;
  --bg-hover: #2d2d32;

  --border-subtle: #27272a;
  --border-default: #3f3f46;
  --border-active: #52525b;

  /* Typography Hierarchy - Strict Opacity Levels */
  --text-primary: rgba(255, 255, 255, 1);
  /* Critical values: 100% */
  --text-secondary: rgba(255, 255, 255, 0.85);
  /* Labels & headers: 85% */
  --text-tertiary: rgba(255, 255, 255, 0.6);
  /* Helper text: 60% */
  --text-disabled: rgba(255, 255, 255, 0.4);
  /* Disabled states: 40% */

  /* ... */

  /* Toggle Button - Sleek & Functional */
  .panel-toggle {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    /* Circle */
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .panel-toggle:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--border-subtle);
  }

  .panel-toggle i {
    font-size: 1.1rem;
    transition: transform 0.3s ease;
  }

  .panel-toggle.collapsed i {
    transform: rotate(180deg);
  }

  /* Robust Collapse Logic matching JS .collapsed class */
  .panel.collapsed .panel-content.collapsible-content {
    display: none;
    /* Hard hide to ensure it works if animation fails */
  }

  .panel:not(.collapsed) .panel-content.collapsible-content {
    display: block;
    animation: slideDown 0.3s ease-out;
  }

  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-5px);
    }

    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #06b6d4;
  --color-boost: #8b5cf6;

  /* UI Variables */
  --font-mono: 'JetBrains Mono',
  monospace;
  --font-sans: 'Inter',
  sans-serif;

  /* Spacing - Increased for "Proper" breathing room */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  /* Increased from 0.75rem */
  --space-4: 1.5rem;
  /* Increased from 1rem */
  --space-5: 2rem;
  /* Increased from 1.5rem */

  --radius-sm: 6px;
  --radius-md: 12px;
  /* More modern rounded corners */
  --radius-lg: 16px;
}

/* Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulseGlow {
  0% {
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4);
  }

  70% {
    box-shadow: 0 0 0 6px rgba(59, 130, 246, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0);
  }
}

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

.fade-in {
  animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.fade-in-delay {
  animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.1s forwards;
  opacity: 0;
}

.panel {
  animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
  opacity: 0;
}

/* Layout */
.simulator-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-5);
}

/* Header */
.simulator-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--space-5);
}

.simulator-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.simulator-title i {
  color: var(--color-warning);
}

.simulator-subtitle {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

.header-badges {
  display: flex;
  gap: var(--space-2);
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  padding: 4px 10px;
  border-radius: 99px;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 6px;
}

.badge i {
  font-size: 1rem;
  color: var(--text-tertiary);
}

/* Grid Layout */
.simulator-grid {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: var(--space-5);
}

@media (max-width: 1100px) {
  .simulator-grid {
    grid-template-columns: 1fr;
  }
}

/* Sidebar */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: sticky;
  top: var(--space-4);
  height: max-content;
}

/* Panel Aesthetics - Premium Feel */
.panel {
  background: rgba(18, 18, 21, 0.6);
  /* Slight transparency */
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  /* Deep elegant shadow */
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  overflow: hidden;
}

.panel:hover {
  border-color: var(--border-default);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.panel-header {
  background: rgba(255, 255, 255, 0.02);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.panel-title {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-title::before {
  content: '';
  display: block;
  width: 3px;
  height: 14px;
  background: var(--color-brand);
  border-radius: 2px;
}

.panel-content {
  padding: var(--space-4);
}

/* Forms */
.form-group {
  margin-bottom: var(--space-4);
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
  font-weight: 500;
}

.label-text i {
  color: var(--text-tertiary);
  margin-right: 6px;
  font-size: 1.1em;
  vertical-align: middle;
}

.label-hint {
  color: var(--text-tertiary);
  cursor: help;
  transition: color 0.2s;
}

.label-hint:hover {
  color: var(--color-brand);
}

/* Modern Controls */
.form-select,
.form-input {
  width: 100%;
  padding: 12px 16px;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: all 0.2s ease;
  backdrop-filter: blur(4px);
}

.form-select:hover,
.form-input:hover {
  background-color: rgba(255, 255, 255, 0.07);
  border-color: var(--text-tertiary);
}

.form-select:focus,
.form-input:focus {
  border-color: var(--color-brand);
  background-color: rgba(0, 0, 0, 0.4);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
  outline: none;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 256 256'%3E%3Cpath fill='%23a1a1aa' d='M213.66,101.66l-80,80a8,8,0,0,1-11.32,0l-80-80A8,8,0,0,1,53.66,90.34L128,164.69l74.34-74.35a8,8,0,0,1,11.32,11.32Z'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

/* System Readiness - Custom UI */
.system-readiness {
  margin: var(--space-4) var(--space-4) 0;
  padding: var(--space-3);
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.readiness-icon-wrapper {
  position: relative;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.readiness-icon {
  color: var(--text-tertiary);
  font-size: 1.25rem;
}

.system-readiness.ready .readiness-icon {
  color: var(--color-success);
}

.status-ring {
  position: absolute;
  top: -4px;
  left: -4px;
  right: -4px;
  bottom: -4px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--text-tertiary);
  animation: spinSlow 2s linear infinite;
  opacity: 0.3;
}

.system-readiness.ready .status-ring {
  border-top-color: var(--color-success);
  border-right-color: var(--color-success);
  opacity: 0.5;
}

.readiness-status {
  font-weight: 600;
  font-size: 0.9rem;
}

.readiness-details {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

/* Storage Grid */
.storage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}

.storage-input {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: var(--space-2);
  text-align: center;
}

.storage-input label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-tertiary);
  margin-bottom: 4px;
  text-transform: uppercase;
}

.storage-input input {
  width: 100%;
  background: transparent;
  border: none;
  text-align: center;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 1rem;
}

.storage-input input:focus {
  outline: none;
}

/* Stats & Graphs */
.graphs-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.graph-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  height: 220px;
  padding: var(--space-2);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.stat-item {
  background: var(--bg-tertiary);
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

.stat-item:hover {
  border-color: var(--border-subtle);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  margin-bottom: var(--space-2);
  display: flex;
  justify-content: space-between;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

/* Warnings */
.warning-item {
  padding: var(--space-3);
  background: var(--bg-tertiary);
  border-left: 3px solid var(--border-default);
  margin-bottom: var(--space-2);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.warning-item.warning {
  border-left-color: var(--color-warning);
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.05), transparent);
}

.warning-item.danger {
  border-left-color: var(--color-danger);
  background: linear-gradient(90deg, rgba(239, 68, 68, 0.05), transparent);
}

.warning-title {
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.warning-message {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Footer Controls */
.controls-section {
  margin-top: auto;
  padding: var(--space-4);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
}

.control-button {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 14px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
}

.control-button:hover {
  background: var(--bg-hover);
  border-color: var(--text-secondary);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.control-button:active {
  transform: translateY(0);
  box-shadow: none;
}

.control-button.paused {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--color-warning);
  color: var(--color-warning);
}

/* Scrollbars */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: 99px;
}

/* System Log Styles */
.log-line {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  padding: 2px 4px;
  border-radius: 2px;
  display: flex;
  gap: 8px;
  align-items: baseline;
  animation: fadeIn 0.2s;
}

.log-line:hover {
  background: rgba(255, 255, 255, 0.05);
}

.log-time {
  color: #555;
}

.log-level {
  font-weight: bold;
}

.log-msg {
  color: #ccc;
}

.log-line.success .log-level {
  color: var(--color-success);
}

.log-line.success .log-msg {
  color: var(--text-secondary);
}

.log-line.warning .log-level {
  color: var(--color-warning);
}

.log-line.warning .log-msg {
  color: #FFE0B2;
}

.log-line.danger .log-level {
  color: var(--color-danger);
}

.log-line.danger .log-msg {
  color: #FFCDD2;
}

/* Component Details Refinement */
.detail-row {
  border-bottom: 1px solid var(--border-subtle);
  padding: 8px 0 !important;
  align-items: center;
}

.detail-row:last-child {
  border-bottom: none;
}

.detail-label {
  font-size: 0.75rem !important;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  color: var(--text-tertiary);
}

.detail-value {
  font-family: var(--font-mono);
  font-size: 0.8rem !important;
  color: var(--text-secondary);
}

/* Sidebar Polish */
.speed-row {
  margin-top: var(--space-4);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.speed-select {
  padding: 4px 8px;
  height: 32px;
  min-width: 80px;
}

.sim-time {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-brand);
  font-weight: 600;
  white-space: nowrap;
}

/* Hardware Info Text Polish */
#cpu-info,
#gpu-info {
  font-family: var(--font-mono);
  font-size: 0.7rem !important;
  color: var(--text-tertiary);
  /* Dimmer */
  margin-top: 6px;
  letter-spacing: -0.02em;
  opacity: 0.8;
}

/* Ensure Power Row stands out */
.power-readout-row .stat-value {
  font-size: 1.5rem !important;
  /* Bigger numbers */
  color: var(--text-primary);
}

.power-readout-row .stat-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Component Details Text inside Panel */
#component-details {
  line-height: 1.6;
}

/* Fix "All the way down" issue - Add bottom breathing room */
.main-content {
  padding-bottom: 100px;
}

/* CRITICAL LAYOUT FIXES */
.detail-row {
  display: flex !important;
  justify-content: space-between !important;
  width: 100%;
}

.breakdown {
  display: flex !important;
  flex-direction: column !important;
  gap: 12px !important;
  /* Proper gapping */
  margin-top: 16px;
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  width: 100%;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.breakdown-label {
  color: var(--text-tertiary);
}
/* ============================================
   REFINED DESIGN SYSTEM
   ============================================ */

/* Typography Scale - Clear Hierarchy */
.text-value-primary {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.text-value-secondary {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.3;
}

.text-label-primary {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1.4;
}

.text-label-secondary {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.text-body {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.text-helper {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  line-height: 1.5;
}

/* Micro-interactions */
.interactive-value {
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.interactive-value:hover {
  color: var(--color-brand);
  transform: translateX(2px);
}

.value-changed {
  animation: valueFlash 0.4s ease-out;
}

@keyframes valueFlash {
  0% { background: rgba(59, 130, 246, 0.2); }
  100% { background: transparent; }
}

/* Smooth state transitions */
.smooth-update {
  transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.smooth-update.updating {
  opacity: 0.6;
  transform: translateY(-2px);
}

/* Enhanced hover states */
.stat-item {
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: default;
}

.stat-item:hover {
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
  transform: translateY(-1px);
}

/* Power delta indicator */
.power-delta {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 8px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.power-delta.visible {
  opacity: 1;
}

.power-delta.positive {
  color: var(--color-danger);
  background: rgba(239, 68, 68, 0.1);
}

.power-delta.negative {
  color: var(--color-success);
  background: rgba(16, 185, 129, 0.1);
}

/* Section transitions */
.section-content {
  transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.section-content.transitioning {
  opacity: 0.5;
  transform: translateY(4px);
}

/* ============================================
   SEARCHABLE DROPDOWN
   ============================================ */

.searchable-dropdown {
  position: relative;
  width: 100%;
}

.dropdown-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  backdrop-filter: blur(4px);
}

.dropdown-trigger:hover {
  background-color: rgba(255, 255, 255, 0.07);
  border-color: var(--text-tertiary);
}

.searchable-dropdown.open .dropdown-trigger {
  border-color: var(--color-brand);
  background-color: rgba(0, 0, 0, 0.4);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.dropdown-value {
  color: var(--text-primary);
  font-size: 0.95rem;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dropdown-icon {
  color: var(--text-tertiary);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.searchable-dropdown.open .dropdown-icon {
  transform: rotate(180deg);
}

.dropdown-panel {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-default);
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  z-index: 1000;
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  max-height: 400px;
  display: flex;
  flex-direction: column;
}

.searchable-dropdown.open .dropdown-panel {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.dropdown-search {
  padding: 12px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.search-icon {
  color: var(--text-tertiary);
  font-size: 1rem;
}

.search-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  font-family: var(--font-sans);
}

.search-input::placeholder {
  color: var(--text-tertiary);
}

.dropdown-results {
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.dropdown-results::-webkit-scrollbar { width: 6px; }
.dropdown-results::-webkit-scrollbar-track { background: transparent; }
.dropdown-results::-webkit-scrollbar-thumb { 
  background: var(--border-default); 
  border-radius: 3px; 
}

.result-group {
  padding: 8px 0;
}

.group-header {
  padding: 6px 12px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 1;
}

.result-item {
  padding: 10px 12px;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.result-item:hover,
.result-item.highlighted {
  background: rgba(59, 130, 246, 0.1);
}

.result-item.selected {
  background: rgba(59, 130, 246, 0.15);
  border-left: 2px solid var(--color-brand);
}

.result-name {
  color: var(--text-secondary);
  font-size: 0.85rem;
  flex: 1;
}

.result-meta {
  color: var(--text-tertiary);
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

.no-results {
  padding: 24px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 0.85rem;
}

/* ============================================
   LIVE INDICATORS & WARNINGS
   ============================================ */

.efficiency-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  transition: all 0.3s ease;
  margin-top: 8px;
}

.efficiency-indicator.optimal {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--color-success);
}

.efficiency-indicator.warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--color-warning);
}

.efficiency-indicator.danger {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--color-danger);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.thermal-headroom-bar {
  height: 6px;
  background: var(--bg-elevated);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 8px;
  position: relative;
}

.thermal-headroom-fill {
  height: 100%;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.3s ease;
  border-radius: 3px;
}

.thermal-headroom-fill.excellent {
  background: linear-gradient(90deg, var(--color-success), #34d399);
}

.thermal-headroom-fill.good {
  background: linear-gradient(90deg, var(--color-brand), #60a5fa);
}

.thermal-headroom-fill.warning {
  background: linear-gradient(90deg, var(--color-warning), #fbbf24);
}

.thermal-headroom-fill.critical {
  background: linear-gradient(90deg, var(--color-danger), #f87171);
}

.comparison-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0;
  transform: scale(0.9);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.comparison-badge.visible {
  opacity: 1;
  transform: scale(1);
}

.comparison-badge.upgrade {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-success);
}

.comparison-badge.downgrade {
  background: rgba(239, 68, 68, 0.15);
  color: var(--color-danger);
}

/* ============================================
   STYLED SELECT (Non-searchable)
   ============================================ */

.styled-select-wrapper {
  position: relative;
  width: 100%;
}

.styled-select-wrapper select {
  width: 100%;
  padding: 12px 40px 12px 16px;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: all 0.2s ease;
  backdrop-filter: blur(4px);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 256 256'%3E%3Cpath fill='%23a1a1aa' d='M213.66,101.66l-80,80a8,8,0,0,1-11.32,0l-80-80A8,8,0,0,1,53.66,90.34L128,164.69l74.34-74.35a8,8,0,0,1,11.32,11.32Z'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
}

.styled-select-wrapper select:hover {
  background-color: rgba(255, 255, 255, 0.07);
  border-color: var(--text-tertiary);
}

.styled-select-wrapper select:focus {
  border-color: var(--color-brand);
  background-color: rgba(0, 0, 0, 0.4);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
  outline: none;
}

.styled-select-wrapper select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 8px;
}

.styled-select-wrapper select optgroup {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.85rem;
}

/* ============================================
   TECH BACKGROUND ANIMATION
   ============================================ */

.tech-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background-color: var(--bg-primary);
  overflow: hidden;
  pointer-events: none;
}

.grid-overlay {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background-image: 
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  transform: perspective(500px) rotateX(60deg);
  animation: gridMove 20s linear infinite;
  opacity: 0.5;
}

@keyframes gridMove {
  0% { transform: perspective(500px) rotateX(60deg) translateY(0); }
  100% { transform: perspective(500px) rotateX(60deg) translateY(40px); }
}

.scan-line {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, 
    transparent 50%, 
    rgba(59, 130, 246, 0.02) 50%, 
    rgba(59, 130, 246, 0.05) 51%, 
    transparent 51%
  );
  background-size: 100% 8px;
  animation: scanlines 1s linear infinite;
  opacity: 0.3;
}

@keyframes scanlines {
  0% { background-position: 0 0; }
  100% { background-position: 0 8px; }
}

.vignette {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, transparent 40%, var(--bg-primary) 90%);
}

/* Subtle Glow on Headers */
.simulator-title i {
  animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
  0%, 100% { text-shadow: 0 0 10px rgba(245, 158, 11, 0.2); }
  50% { text-shadow: 0 0 20px rgba(245, 158, 11, 0.6); }
}

/* Scrollbar Polish */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary); 
}
::-webkit-scrollbar-thumb {
  background: var(--border-default); 
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-active); 
}

/* ============================================
   MOBILE RESPONSIVENESS OVERHAUL
   ============================================ */

/* Tablet & Mobile Breakpoint (1024px and below) */
@media (max-width: 1024px) {
  .simulator-container {
    padding: var(--space-3);
    max-width: 100%;
  }

  .simulator-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .sidebar {
    position: relative; /* Unstick sidebar on mobile */
    top: 0;
    height: auto;
    margin-bottom: var(--space-4);
  }
  
  .graphs-section {
    grid-template-columns: 1fr; /* Stack graphs */
  }
}

/* Mobile Breakpoint (768px and below) */
@media (max-width: 768px) {
  .simulator-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .header-content {
    width: 100%;
  }
  
  .header-badges {
    width: 100%;
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  /* Adjust Typography */
  .simulator-title {
    font-size: 1.25rem;
  }
  
  .simulator-subtitle {
    font-size: 0.8rem;
  }

  /* Form & Input adjustments */
  .form-row {
    grid-template-columns: 1fr; /* Stack inputs */
  }

  .storage-grid {
    grid-template-columns: 1fr 1fr 1fr; /* Keep 3 but smaller text */
    gap: 4px;
  }
  
  .storage-input {
    padding: 6px;
  }

  .storage-input label {
    font-size: 0.65rem;
  }

  /* Power Panel Grid */
  .power-readout-row {
    grid-template-columns: 1fr 1fr !important; /* Force 2 columns */
    gap: var(--space-2) !important;
  }

  .stat-value {
    font-size: 1.25rem;
  }

  /* Hide complex breakdown on very small screens? No, just stack */
  .breakdown-row {
     font-size: 0.8rem;
  }

  /* Misc */
  .panel-header {
    padding: var(--space-3);
  }
  
  .panel-content {
    padding: var(--space-3);
  }
}

/* Small Mobile (480px and below) */
@media (max-width: 480px) {
  .storage-grid {
    grid-template-columns: 1fr; /* Stack storage inputs */
  }

  .power-readout-row {
    grid-template-columns: 1fr !important;
  }
  
  .header-badges {
    justify-content: flex-start;
  }
}