:root{
    color-scheme: light;
    /* Enhanced color palette with better contrast and modern aesthetics */
    --bg: #fafbfc;
    --panel: #ffffff;
    --ink: #111827;
    --muted: #374151; /* improved contrast */
    --line: #cbd5e1;
    
    /* Primary colors with improved accessibility */
    --accent: #2c5282;
    --accent-light: #63b3ed;
    --accent-dark: #2a4365;
    
    /* Status colors with better contrast - color-blind friendly (blue/orange/purple) */
    --warn: #dd6b20;     /* orange */
    --error: #c53030;    /* darker red */
    --ok: #3182ce;       /* blue */
    --crit: #c53030;     /* darker red */
    --info: #63b3ed;     /* light blue */
    
    /* Subsystem colors with enhanced visibility - color-blind friendly */
    --pwr: #dd6b20;      /* orange */
    --pcie: #ed8936;     /* light orange */
    --bmc: #805ad5;      /* purple */
    --bios: #b794f4;     /* light purple */
    --fw: #3182ce;       /* blue */
    --mech: #4299e1;     /* light blue */
    --thermal: #dd6b20;  /* orange */
    --sys: #718096;      /* slate gray */
    
      /* Enhanced shadows and effects */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 6px 10px -3px rgba(0, 0, 0, 0.10), 0 3px 6px -3px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Performance optimizations */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;
  
  /* Reduced motion support */
  --motion-reduce: 0.01ms;
    
    /* Typography improvements */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 15px;
    --font-size-sm: 13px;
    --font-size-lg: 16px;
    --font-size-xl: 18px;
    --line-height: 1.6;
    
    /* Spacing improvements */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 0.75rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
    --spacing-2xl: 2rem;
    
    /* Border radius improvements */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
  }

  html.dark-mode {
    color-scheme: dark;
    --bg: #121821;
    --panel: #1a202c;
    --ink: #F3F4F6;
    --muted: #cbd5e1; /* improved contrast */
    --line: #64748B;
    --accent: #90cdf4;
    --accent-light: #63b3ed;
    --accent-dark: #bee3f8;

    /* Subsystem colors adjusted for dark mode */
    --pwr: #f6ad55;      /* orange */
    --pcie: #fbd38d;     /* light orange */
    --bmc: #b794f4;      /* purple */
    --bios: #d6bcfa;     /* light purple */
    --fw: #63b3ed;       /* blue */
    --mech: #4fd1c5;     /* teal */
    --thermal: #f6ad55;  /* orange */
    --sys: #a0aec0;      /* slate gray */
  }

  html.dark-mode body {
    background: linear-gradient(135deg, var(--bg) 0%, #1a202c 100%);
  }

  html.dark-mode .btn:hover {
    background: var(--accent-light);
    color: var(--bg);
  }

  html.dark-mode .btn.accent {
    background: var(--accent);
    color: var(--bg);
  }

  html.dark-mode .btn.accent:hover {
    background: var(--accent-dark);
  }

  html.dark-mode .tabs {
    background: #2d3748;
  }

  html.dark-mode .tab.active {
    background: rgba(99, 179, 237, 0.1);
  }

  html.dark-mode .gantt .bar rect {
    fill: #4a5568;
  }

  html.dark-mode .gantt .bar.critical rect {
    fill: url(#stripes);
  }

  html.dark-mode .gantt .bar .label:not([text-anchor="end"]) {
    fill: var(--ink);
  }

  html.dark-mode .groupHeader {
    fill: #2d3748;
    stroke: #4a5568;
  }

  html.dark-mode #graph svg, html.dark-mode #timeline svg {
    background: radial-gradient(1200px 800px at 60% -20%, rgba(99, 179, 237, 0.08), transparent 60%);
  }

  html.dark-mode .node rect {
    fill: var(--panel);
  }

  html.dark-mode .node.critical rect {
    fill: url(#stripes);
  }

  .stripes-bg {
    fill: var(--bg);
  }
  .stripes-line {
    stroke: var(--crit);
    stroke-opacity: 0.4;
  }
  
  html,body{height:100%}
  body{
    margin:0; 
    font: var(--font-size-base)/var(--line-height) var(--font-family);
    background: linear-gradient(135deg, var(--bg) 0%, #f8fafc 100%);
    color: var(--ink);
    line-height: var(--line-height);
    min-height: 100vh;
    position: relative;
  }
  
  body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
      radial-gradient(circle at 20% 80%, rgba(49, 130, 206, 0.03) 0%, transparent 50%),
      radial-gradient(circle at 80% 20%, rgba(56, 161, 105, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
  }
  
  /* Enhanced header with better visual hierarchy */
  header{
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--panel);
    position: sticky;
    top: 0;
    z-index: 3;
    box-shadow: var(--shadow);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(8px);
  }

  .legacy-header {
    position: relative;
    top: auto;
    z-index: 10;
    padding: var(--spacing-sm) var(--spacing-lg);
    margin-bottom: 4px;
  }
  
  .header-left h1{
    font-size: var(--font-size-xl);
    margin: 0;
    letter-spacing: -0.025em;
    font-weight: 700;
    color: var(--ink);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
  }

  .header-center {
    flex: 1;
    display: flex;
    justify-content: center;
  }

  .top-toolbar {
    position: relative;
    z-index: 9;
  }

  #top-toolbar {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
  }

  .toolbar-item {
    position: relative;
  }
  
  .title-icon {
    font-size: 1.5em;
    opacity: 0.8;
  }
  
  .subtitle {
    color: var(--muted);
    font-weight: 400;
    font-size: 0.7em;
    margin-left: var(--spacing-sm);
  }
  
    .toolbar-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .toolbar-heading {
    font-size: var(--font-size-sm);
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0;
    padding: 0;
    text-align: center;
    font-weight: 600;
  }
  
  .button-group {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
  }
  
  
  .btn-icon {
    font-size: 0.9em;
    margin-right: var(--spacing-xs);
  }
  
  
  .status-indicators {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
  }
  
  .status-pill {
    background: rgba(49, 130, 206, 0.1);
    border-color: var(--accent-light);
    color: var(--accent-dark);
    font-weight: 600;
  }
  
  .feature-pill {
    background: rgba(56, 161, 105, 0.1);
    border-color: var(--ok);
    color: var(--ok);
    font-size: 0.8em;
  }
  
  .pill-icon {
    margin-right: var(--spacing-xs);
    font-size: 0.9em;
  }
  
  header .right{
    display: flex; 
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: flex-end;
  }
  
  /* Enhanced button styles */
  .btn{
    background: var(--panel);
    color: var(--ink);
    border: 1px solid var(--line);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-normal), color var(--transition-normal), border-color var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-normal);
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    will-change: transform;
  }
  
  .btn:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
  }
  
  .btn:active {
    transform: translateY(0);
  }
  
  .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
  }
  
  .btn.ghost {
    background: transparent;
    border-color: transparent;
  }
  
  .btn.ghost:hover {
    background: rgba(49, 130, 206, 0.1);
    border-color: var(--accent);
    color: var(--accent);
  }
  
  .btn.accent {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
  }
  
  .btn.accent:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
  }
  
  .btn.small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
  }
  
  .btn:hover{
    background: #f7fafc;
    border-color: var(--accent-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
  }
  
  .btn:active{
    transform: translateY(0);
  }
  
  .btn.ghost{
    background: transparent;
    border-color: var(--line);
  }
  
  .btn.warn{
    border-color: var(--warn);
    color: var(--warn);
  }
  
  .btn.accent{
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(49, 130, 206, 0.1);
  }
  
  .btn.accent:hover{
    background: rgba(49, 130, 206, 0.15);
  }
  
  .btn.error{
    border-color: var(--error);
    color: var(--error);
  }
  
  .btn.small{
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
  }
  
  /* Enhanced pill styles */
  .pill{
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    background: var(--panel);
    color: var(--muted);
  }
  

  details > summary {
    list-style: none;
    cursor: pointer;
  }
  details > summary::-webkit-details-marker {
    display: none;
  }

  /* Context panel */
  aside{
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    position: sticky;
    top: 90px;
    height: calc(100vh - 110px);
    overflow: auto;
    box-shadow: var(--shadow);
  }
  
  aside h2{
    font-size: var(--font-size-sm);
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: var(--spacing-xl) 0 var(--spacing-sm);
    font-weight: 600;
    border-bottom: 1px solid var(--line);
    padding-bottom: var(--spacing-xs);
  }
  
  aside label, aside .row{
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
  }
  
  /* Enhanced form elements */
  .form-label {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    width: 100%;
  }
  
  .form-label.full-width {
    width: 100%;
  }
  
  .label-icon {
    font-size: 1.1em;
    opacity: 0.7;
    margin-right: var(--spacing-xs);
  }
  
  .section-icon {
    margin-right: var(--spacing-sm);
    opacity: 0.8;
  }
  
  .form-input {
    background: var(--panel);
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
    width: 100%;
    will-change: transform;
  }
  
  .form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
    transform: translateY(-1px);
  }
  
  .form-input:invalid {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
  }
  
  .form-input:disabled {
    background: #f8fafc;
    color: var(--muted);
    cursor: not-allowed;
  }
  
  /* Enhanced form validation feedback */
  .form-input.error {
    border-color: var(--error);
    background: #fef2f2;
  }
  
  .form-input.success {
    border-color: var(--success);
    background: #f0fdf4;
  }
  
  .form-input.warning {
    border-color: var(--warning);
    background: #fffbeb;
  }
  
  /* Form field help text */
  .form-help {
    font-size: var(--font-size-sm);
    color: var(--muted);
    margin-top: var(--spacing-xs);
    line-height: 1.4;
  }
  
  .form-help.error {
    color: var(--error);
  }
  
  .form-help.success {
    color: var(--success);
  }
  
  .form-help.warning {
    color: var(--warning);
  }
  
  .search-container {
    position: relative;
    width: 100%;
  }
  
  .search-icon {
    position: absolute;
    left: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted);
    font-size: 0.9em;
    pointer-events: none;
  }
  
  .search-input {
    padding-left: calc(var(--spacing-sm) * 2 + 1em);
  }
  
  .filter-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
  }
  
  textarea{
    width: 100%;
    min-height: 70px;
    font: inherit;
    resize: vertical;
  }
  
  input[type="checkbox"]{
    transform: scale(1.2);
    accent-color: var(--accent);
  }
  
  /* Enhanced subsystem filters */
  .subsys{
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-sm) var(--spacing-md);
  }
  
  .subsystem-controls {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-sm);
  }
  
  /* Enhanced tag styles */
  .tag{
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    font-size: var(--font-size-sm);
    background: var(--panel);
    cursor: pointer;
    transition: background-color var(--transition-normal), border-color var(--transition-normal), transform var(--transition-normal);
    font-weight: 500;
    will-change: transform;
  }
  
  .tag:hover{
    background: #f7fafc;
    border-color: var(--accent-light);
    transform: translateY(-1px);
  }
  
  .tag input{
    margin-right: var(--spacing-xs);
  }
  
  /* Enhanced dot indicators */
  .dot{
    width: 12px;
    height: 12px;
    border-radius: 999px;
    display: inline-block;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }
  
  .dot.pwr{background: var(--pwr)} 
  .dot.pcie{background: var(--pcie)} 
  .dot.bmc{background: var(--bmc)} 
  .dot.bios{background: var(--bios)} 
  .dot.fw{background: var(--fw)} 
  .dot.mech{background: var(--mech)} 
  .dot.thermal{background: var(--thermal)} 
  .dot.sys{background: var(--sys)}
  
  /* Enhanced main content area */
  main{
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 0;
    min-height: 60vh;
    overflow: auto;
    position: relative;
    box-shadow: var(--shadow);
  }
  
  /* Enhanced tabs */
  .tabs{
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    border-bottom: 1px solid var(--line);
    background: #f8fafc;
    position: sticky;
    top: 0;
    z-index: 2;
    padding: 0 var(--spacing-lg);
  }
  
  .tab{
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    user-select: none;
    font-weight: 500;
    color: var(--muted);
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
    position: relative;
  }
  
  .tab:hover{
    color: var(--ink);
    background: rgba(49, 130, 206, 0.05);
  }
  
  .tab.active{
    border-bottom-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
    background: rgba(49, 130, 206, 0.08);
  }
  
  .tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
    box-shadow: 0 0 8px rgba(49, 130, 206, 0.4);
  }
  
  .view{
    display: none;
    padding: 0;
  }
  
  .view.active{
    display: block;
  }
  
  /* Enhanced graph and timeline */
  #graph svg, #timeline svg{
    width: 100%;
    /* height is set dynamically by JS */
    display: block;
    background: radial-gradient(1200px 800px at 60% -20%, rgba(49, 130, 206, 0.08), transparent 60%);
    border-radius: var(--radius-md);
  }
  
  #graph, #timeline {
    padding: var(--spacing-lg);
    background: var(--panel);
    border-radius: var(--radius-md);
    margin: var(--spacing-lg);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
    overflow: hidden;
  }
  
  /* Enhanced legend */
  .legend{
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--line);
    align-items: center;
    color: var(--muted);
    flex-wrap: wrap;
    background: #f8fafc;
  }
  
  .legend .group{
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
  }
  
  /* Enhanced node styles */
  .node{
    cursor: pointer;
  }
  
  .node rect{
    fill: var(--panel);
    stroke: var(--line);
    rx: var(--radius-md);
    transition: all 0.2s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
  }
  
    .node:hover rect{
    stroke: var(--accent);
    stroke-width: 2px;
    filter: drop-shadow(0 4px 8px rgba(49, 130, 206, 0.2));
    transform: translateY(-2px);
  }
  
  .node.critical rect{
    stroke: var(--crit);
    stroke-width: 2;
    fill: url(#stripes);
  }
  
  .node.selected rect{
    stroke: var(--accent);
    stroke-width: 2;
    filter: drop-shadow(0 0 0 3px rgba(49, 130, 206, 0.3));
  }
  
  .node .title{
    font-weight: 600;
    font-size: var(--font-size-sm);
  }
  
  /* Enhanced edge styles */
  .edge{
    stroke: var(--line);
    stroke-width: 1.5;
    transition: all 0.2s ease;
  }
  
  .edge:hover{
    stroke: var(--accent);
    stroke-width: 2;
  }
  
  .edge.critical{
    stroke: var(--crit);
    stroke-width: 2;
  }
  
  .edge.arrow{
    marker-end: url(#arrow);
  }
  
  /* Enhanced Gantt chart */
  .gantt .bar{
    stroke: var(--line);
    transition: all 0.2s ease;
  }

  .gantt .bar rect {
    fill: #e2e8f0;
    filter: drop-shadow(0 1px 1px rgba(0,0,0,.05));
  }
  
  .gantt .bar:hover{
    stroke: var(--accent);
    stroke-width: 2;
  }
  
  .gantt .bar.critical rect {
    fill: #fca5a5; /* light red base */
    stroke: #b91c1c;
  }
  .gantt .bar.critical rect.overlay {
    fill: url(#critStripes);
    color: rgba(0,0,0,0.3); /* stripe color via currentColor */
  }
  
  .gantt .bar.selected rect{
    stroke: var(--accent);
    stroke-width: 2;
    filter: drop-shadow(0 0 0 3px rgba(49, 130, 206, 0.3));
  }
  
  .gantt .bar .label{
    font-size: 13px;
    fill: var(--ink);
    font-weight: 500;
    /* Ensure bar labels are fill-only */
    filter: none;
    text-shadow: none;
  }
  
  /* Enhanced task names in timeline for better visibility */
  .gantt .bar .label[text-anchor="end"]{
    font-size: 15px;
    fill: var(--ink);
    font-weight: 600;
    font-family: var(--font-family);
  }
  
  /* Task name labels specifically (positioned at P-8) */
  .gantt .bar text.label[text-anchor="end"]{
    font-size: 14px;
    fill: var(--ink);
    font-weight: 700;
    dominant-baseline: middle;
    text-rendering: optimizeLegibility;
    paint-order: stroke fill;
    stroke: var(--bg);
    stroke-width: 3px;
    stroke-linejoin: round;
  }
  
  /* Duration and percentage labels - make them more readable */
  .gantt .bar .label:not([text-anchor="end"]){
    font-size: 13px;
    fill: white;
    font-weight: 700;
  }
  .gantt .bar .label.duration-label {
    fill: var(--ink);
  }
  
  .gantt .handle{
    fill: #94a3b8;
    cursor: ew-resize;
  }
  
  /* Apply moved shadow only to bar rectangles */
  .gantt .bar.moved rect{
    filter: drop-shadow(0 1px 1px rgba(0,0,0,.05))
            drop-shadow(0 0 10px rgba(49, 130, 206, 0.35));
  }
  
  .gantt .bar.invalid rect{
    stroke: var(--error) !important;
    fill: #fed7d7;
  }
  
  .gantt .bar.valid rect{
    outline: 2px solid #9ae6b4;
  }
  
  .gantt .milestone{
    stroke-width: 2;
    fill: var(--panel);
    stroke-dasharray: 3 3;
  }
  
  .gantt .milestone.critical{
    fill: #fed7d7;
    stroke: var(--crit);
  }
  
  .gantt .bar .progress{
    opacity: 0.85;
  }
  
  /* Enhanced axis */
  .axis{
    stroke: var(--line);
  }
  
  .axis text{
    fill: var(--ink);
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font-family);
  }
  
  /* Ensure all timeline text is highly readable */
  #timeline svg text {
    font-weight: 600;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Gantt text policy: fill-only, no outlines */
    filter: none;
    stroke: none;
    text-shadow: none;
  }
  
  /* Task labels specifically */
  #timeline .gantt .bar text.label {
    font-weight: 700;
    fill: var(--ink);
  }
  
  /* Enhanced issues */
    .issues{
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--panel);
    border-radius: var(--radius-md);
    margin: var(--spacing-lg);
    border: 1px solid var(--line);
  }
  
  .issue{
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: var(--spacing-md);
    background: var(--panel);
    border: 1px solid var(--line);
    border-left-width: 4px;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all 0.2s ease;
  }
  
  .issue:hover{
    transform: translateX(2px);
    box-shadow: var(--shadow);
  }
  
  .sev-info{border-left-color: var(--info)}
  .sev-warn{border-left-color: var(--warn)}
  .sev-error{border-left-color: var(--error)}
  .sev-critical{border-left-color: var(--crit)}
  
  .issue .meta{
    font-size: var(--font-size-sm);
    color: var(--muted);
  }
  
  .issue .msg{
    font-weight: 600;
    color: var(--ink);
  }
  
  .issue .actions{
    display: flex;
    gap: var(--spacing-sm);
  }
  
  /* Enhanced focus section */
  .focus{
    padding: var(--spacing-xl);
  }
  
  .focus-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--line);
  }
  
  .focus-header h2 {
    color: var(--ink);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin: 0 0 var(--spacing-sm) 0;
  }
  
  .focus-description {
    color: var(--muted);
    font-size: var(--font-size-sm);
    margin: 0;
  }
  
  .focus-section {
    margin-bottom: var(--spacing-2xl);
  }
  
  .focus h3{
    margin: var(--spacing-sm) 0 var(--spacing-md);
    color: var(--accent);
    font-size: var(--font-size-lg);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
  }
  
  .focus .cards{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
  }
  
  /* Base card styles */
  .card{
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
    will-change: transform;
  }
  
  .card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    opacity: 0;
    transition: opacity 0.2s ease;
  }
  
  .card:hover{
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
  }
  
  .card:hover::before {
    opacity: 1;
  }
  
  /* Metric card variant */
  .metric-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
  }
  
  .card-icon {
    font-size: 2rem;
    opacity: 0.8;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(49, 130, 206, 0.1);
    border-radius: var(--radius-lg);
    color: var(--accent);
  }
  
  .card-content {
    flex: 1;
  }
  
  .card-label {
    font-size: var(--font-size-sm);
    color: var(--muted);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }
  
  .metric{
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    margin: 0;
  }
  
  /* Enhanced list styles */
  .list{
    display: grid;
    gap: var(--spacing-sm);
    max-height: 45vh;
    overflow: auto;
  }
  
  .list .row{
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px dashed var(--line);
    transition: background-color var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-normal), border-bottom-color var(--transition-normal);
    will-change: transform;
    border-radius: var(--radius-sm);
    margin: var(--spacing-xs) 0;
  }
  
  .list .row:hover{
    background: #f7fafc;
    transform: translateX(4px);
    box-shadow: var(--shadow);
    border-bottom-color: var(--accent);
  }
  
  .row .slack{
    font-variant-numeric: tabular-nums;
    font-weight: 600;
    color: var(--accent);
  }
  
  /* Enhanced keyboard shortcuts */
  .kbd{
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--line);
    border-bottom-width: 2px;
    background: #f8fafc;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--muted);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    will-change: transform;
  }
  
  .kbd:hover{
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    border-color: var(--accent);
  }
  
  /* Enhanced hints and toasts with accessibility */
  .hint{
    position: fixed;
    z-index: 10;
    background: var(--panel);
    border: 1px solid #fde68a;
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: #7a5d00;
    display: none;
    backdrop-filter: blur(8px);
    animation: slideIn 0.3s ease-out;
    max-width: 300px;
    word-wrap: break-word;
  }
  
  /* Screen reader only text */
  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
  
  /* Enhanced focus indicators for keyboard navigation */
  .btn:focus-visible,
  .form-input:focus-visible,
  select:focus-visible,
  .tab:focus-visible,
  .tag:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(49, 130, 206, 0.1);
  }
  
  /* Focus management for interactive elements */
  .tab:focus-visible {
    background: var(--accent-light);
    border-color: var(--accent);
  }
  
  .tag:focus-visible {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
  }
  
  /* Enhanced keyboard navigation for lists */
  .list .row:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    background: var(--accent-light);
  }
  
  /* Focus management for cards */
  .card:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(49, 130, 206, 0.1);
  }
  
  /* Skip to main content link */
  .skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--accent);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: var(--radius-sm);
    z-index: 1000;
    transition: top 0.3s;
  }
  
  .skip-link:focus {
    top: 6px;
  }
  
  @keyframes slideIn {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  /* Enhanced animations for better UX */
  @keyframes fadeIn {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }
  
  @keyframes slideInLeft {
    from {
      opacity: 0;
      transform: translateX(-20px);
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }
  
  @keyframes slideInRight {
    from {
      opacity: 0;
      transform: translateX(20px);
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }
  
  @keyframes scaleIn {
    from {
      opacity: 0;
      transform: scale(0.9);
    }
    to {
      opacity: 1;
      transform: scale(1);
    }
  }
  
  /* Animation classes for dynamic content */
  .animate-fade-in {
    animation: fadeIn var(--transition-normal) ease-out;
  }
  
  .animate-slide-in-left {
    animation: slideInLeft var(--transition-normal) ease-out;
  }
  
  .animate-slide-in-right {
    animation: slideInRight var(--transition-normal) ease-out;
  }
  
  .animate-scale-in {
    animation: scaleIn var(--transition-normal) ease-out;
  }
  
  /* Staggered animations for lists */
  .list .row:nth-child(1) { animation-delay: 0.1s; }
  .list .row:nth-child(2) { animation-delay: 0.2s; }
  .list .row:nth-child(3) { animation-delay: 0.3s; }
  .list .row:nth-child(4) { animation-delay: 0.4s; }
  .list .row:nth-child(5) { animation-delay: 0.5s; }
  
  /* Reduced motion support */
  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: var(--motion-reduce) !important;
      animation-iteration-count: 1 !important;
      transition-duration: var(--motion-reduce) !important;
    }
    
    .card:hover,
    .btn:hover,
    .list .row:hover {
      transform: none !important;
    }
  }
  
  .toast{
    position: fixed;
    right: 14px;
    bottom: 14px;
    background: var(--panel);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    color: var(--ink);
    display: none;
    backdrop-filter: blur(8px);
    border-left: 4px solid var(--accent);
  }
  
  /* Floating toolbar containers */
  #timeline,
  #graph {
    position: relative;
  }

  .floating-toolbar {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 10;
    background: var(--panel);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    box-shadow: var(--shadow-lg);
    display: flex;
    gap: var(--spacing-sm);
  }
  
  
  /* Enhanced context menu */
  .ctx-menu{
    position: fixed;
    display: none;
    background: var(--panel);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-xl);
    border-radius: var(--radius-md);
    z-index: 1000;
    backdrop-filter: blur(8px);
    min-width: 160px;
  }
  
  .ctx-menu div{
    padding: var(--spacing-sm) var(--spacing-lg);
    cursor: pointer;
    transition: background-color var(--transition-normal), transform var(--transition-normal), color var(--transition-normal);
    border-radius: var(--radius-sm);
    margin: var(--spacing-xs) var(--spacing-sm);
    will-change: transform;
  }
  
  .ctx-menu div:hover{
    background: #f7fafc;
    transform: translateX(4px);
    color: var(--accent);
  }
  
  /* Enhanced toolbar */
  .toolbar{
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
  }
  
  /* Enhanced group headers */
  .groupHeader{
    fill: #f8fafc;
    stroke: #e2e8f0;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.05));
    opacity: 0.8;
  }
  
  .groupLabel{
    font-size: 13px;
    fill: var(--ink);
    font-weight: 600;
    font-family: var(--font-family);
  }
  
  /* Enhanced loading states */
  .loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    text-align: center;
    gap: var(--spacing-lg);
  }
  
  .loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--line);
    border-top: 4px solid var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
  }
  
  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }
  
  .loading-tip {
    background: var(--accent-light);
    border: 1px solid var(--accent);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    max-width: 400px;
    font-size: var(--font-size-sm);
  }
  
  .tip-icon {
    margin-right: var(--spacing-xs);
    opacity: 0.7;
  }
  
  /* Enhanced bulk edit section */
  .bulk{
    display: grid;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--panel);
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    margin: var(--spacing-lg);
  }
  
  .bulk .row{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: #f8fafc;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    transition: background-color var(--transition-normal), border-color var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-normal);
    will-change: transform;
  }
  
  .bulk .row:hover{
    background: #f1f5f9;
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
  }
  
  .bulk .row-3{
    grid-template-columns: 1fr 1fr 1fr;
  }
  
  /* Utility classes for better maintainability */
  .text-center { text-align: center; }
  .text-left { text-align: left; }
  .text-right { text-align: right; }
  
  .font-bold { font-weight: 700; }
  .font-semibold { font-weight: 600; }
  .font-medium { font-weight: 500; }
  .font-normal { font-weight: 400; }
  
  .text-sm { font-size: var(--font-size-sm); }
  .text-md { font-size: var(--font-size-md); }
  .text-lg { font-size: var(--font-size-lg); }
  .text-xl { font-size: var(--font-size-xl); }
  
  .text-muted { color: var(--muted); }
  .text-accent { color: var(--accent); }
  .text-success { color: var(--success); }
  .text-warning { color: var(--warning); }
  .text-error { color: var(--error); }
  
  .bg-panel { background: var(--panel); }
  .bg-accent-light { background: var(--accent-light); }
  .bg-success-light { background: #f0fdf4; }
  .bg-warning-light { background: #fffbeb; }
  .bg-error-light { background: #fef2f2; }
  
  .border { border: 1px solid var(--line); }
  .border-accent { border-color: var(--accent); }
  .border-success { border-color: var(--success); }
  .border-warning { border-color: var(--warning); }
  .border-error { border-color: var(--error); }
  
  .rounded-sm { border-radius: var(--radius-sm); }
  .rounded-md { border-radius: var(--radius-md); }
  .rounded-lg { border-radius: var(--radius-lg); }
  .rounded-full { border-radius: 9999px; }
  
  .shadow-sm { box-shadow: var(--shadow-sm); }
  .shadow { box-shadow: var(--shadow); }
  .shadow-md { box-shadow: var(--shadow-md); }
  .shadow-lg { box-shadow: var(--shadow-lg); }
  .shadow-xl { box-shadow: var(--shadow-xl); }
  
  .p-xs { padding: var(--spacing-xs); }
  .p-sm { padding: var(--spacing-sm); }
  .p-md { padding: var(--spacing-md); }
  .p-lg { padding: var(--spacing-lg); }
  .p-xl { padding: var(--spacing-xl); }
  
  .m-xs { margin: var(--spacing-xs); }
  .m-sm { margin: var(--spacing-sm); }
  .m-md { margin: var(--spacing-md); }
  .m-lg { margin: var(--spacing-lg); }
  .m-xl { margin: var(--spacing-xl); }
  
  .flex { display: flex; }
  .flex-col { flex-direction: column; }
  .flex-row { flex-direction: row; }
  .items-center { align-items: center; }
  .items-start { align-items: flex-start; }
  .items-end { align-items: flex-end; }
  .justify-center { justify-content: center; }
  .justify-between { justify-content: space-between; }
  .justify-start { justify-content: flex-start; }
  .justify-end { justify-content: flex-end; }
  
  .hidden { display: none; }
  .block { display: block; }
  .inline-block { display: inline-block; }
  .inline { display: inline; }
  
  .w-full { width: 100%; }
  .w-auto { width: auto; }
  .h-full { height: 100%; }
  .h-auto { height: auto; }
  
  .cursor-pointer { cursor: pointer; }
  .cursor-not-allowed { cursor: not-allowed; }
  .cursor-default { cursor: default; }
  
  .select-none { user-select: none; }
  .select-text { user-select: text; }
  
  .overflow-hidden { overflow: hidden; }
  .overflow-auto { overflow: auto; }
  .overflow-scroll { overflow: scroll; }
  
  /* Enhanced inline edit */
  .inline-edit{
    display: grid;
    gap: var(--spacing-sm);
  }
  
  .inline-edit .row{
    display: grid;
    grid-template-columns: 1fr 60px 1fr 1fr 60px;
    gap: var(--spacing-sm);
    align-items: center;
    transition: background-color var(--transition-normal);
  }
  
  .inline-edit .row:hover {
    background: var(--accent-light);
  }
  
  /* Enhanced modal */
  .modal{
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(2, 6, 23, 0.6);
    backdrop-filter: blur(4px);
  }
  
  .modal .panel{
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: min(880px, 94vw);
    max-height: 85vh;
    overflow: auto;
  }
  
  .modal header{
    position: sticky;
    top: 0;
    box-shadow: none;
  }
  
  .wizard-step{
    padding: var(--spacing-xl);
  }
  
  .wizard-controls{
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: 0 var(--spacing-xl) var(--spacing-xl);
  }
  
  /* Enhanced print styles */
  @media print{
    header, aside, .tabs, #timeline, #graph, #compare, .badges{
      display: none !important;
    }
    main{
      border: none;
    }
    .view#focus{
      display: block !important;
    }
    body{
      background: white;
      color: black;
    }
    .card, .list .row{
      border-color: #e5e7eb;
    }
  }
  
  /* Responsive improvements */
  @media (max-width: 1200px) {
    .layout {
      grid-template-columns: 350px 1fr;
      gap: var(--spacing-lg);
      padding: var(--spacing-lg);
    }
    
    .focus .cards {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  
  @media (max-width: 900px) {
    .layout {
      grid-template-columns: 1fr;
      gap: var(--spacing-md);
      padding: var(--spacing-md);
    }
    
    aside {
      position: static;
      height: auto;
      max-height: 50vh; /* Allow more space for context panel on tablet */
    }
    
    .focus .cards {
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    
    header {
      flex-direction: column;
      align-items: stretch;
      gap: var(--spacing-lg);
    }

    .header-center {
      flex-direction: column;
      align-items: stretch;
      gap: var(--spacing-md);
    }

    .toolbar-group {
      align-items: stretch;
    }

    .button-group {
      flex-wrap: wrap;
      justify-content: center;
    }
    
    header .right {
      margin-left: 0;
      width: 100%;
      justify-content: center;
      margin-top: var(--spacing-sm);
      align-items: center;
    }
    
    /* Enhanced mobile navigation */
    .legend {
      flex-direction: column;
      gap: var(--spacing-md);
    }
    
    .legend .group {
      flex-direction: row; /* Keep horizontal on tablet */
      flex-wrap: wrap;
      justify-content: center;
    }

    /* Mobile-optimized form inputs */
    .form-input {
      font-size: 16px; /* Prevents zoom on iOS */
    }
    
    /* Mobile-optimized buttons */
    .btn {
      min-height: 44px; /* Touch-friendly sizing */
      padding: var(--spacing-sm) var(--spacing-lg);
    }
    
    /* Mobile-optimized context menu */
    .ctx-menu {
      min-width: 200px;
      font-size: var(--font-size-md);
    }
    
    .ctx-menu div {
      padding: var(--spacing-md) var(--spacing-lg);
    }

    .tabs {
      flex-wrap: wrap;
    }
  }
  

  /* Enhanced large screen optimizations */
  @media (min-width: 1025px) {
    .layout {
      grid-template-columns: 350px 1fr;
    }
    
    .cards {
      grid-template-columns: repeat(4, 1fr);
    }
    
    .subsys {
      grid-template-columns: repeat(3, 1fr);
    }
  }
  
  /* Enhanced print styles */
  @media print {
    * {
      background: transparent !important;
      color: black !important;
      box-shadow: none !important;
      text-shadow: none !important;
    }
    
    .layout {
      grid-template-columns: 1fr;
      gap: 0;
    }
    
    aside {
      display: none;
    }
    
    .tabs {
      display: none;
    }
    
    .legend {
      display: none;
    }
    
    .btn {
      display: none;
    }
    
    .ctx-menu {
      display: none;
    }
    
    .toast {
      display: none;
    }
    
    .hint {
      display: none;
    }
    
    .modal {
      display: none;
    }
    
    #timeline {
      page-break-inside: avoid;
    }
    
    .card {
      page-break-inside: avoid;
      border: 1px solid #ccc;
      margin-bottom: 1em;
    }
    
    .list .row {
      page-break-inside: avoid;
      border-bottom: 1px solid #ccc;
    }
  }
  
  /* Loading and error states */
  #boot {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background: var(--bg);
  }
  
  .loading-container {
    text-align: center;
    max-width: 400px;
    padding: var(--spacing-2xl);
  }
  
  .loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--line);
    border-top: 4px solid var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-xl);
  }
  
  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }
  
  .loading-container h2 {
    color: var(--ink);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin: 0 0 var(--spacing-sm) 0;
  }
  
  .loading-container p {
    color: var(--muted);
    font-size: var(--font-size-sm);
    margin: 0 0 var(--spacing-lg) 0;
  }
  
  .loading-tip {
    background: rgba(49, 130, 206, 0.1);
    border: 1px solid var(--accent-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--accent-dark);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
  }
  
  .tip-icon {
    font-size: 1.2em;
  }
  
  #fatal {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #fed7d7;
    border: 1px solid var(--error);
    color: var(--error);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    max-width: 500px;
    text-align: center;
    box-shadow: var(--shadow-xl);
  }
  
  /* Smooth scrolling */
  html {
    scroll-behavior: smooth;
  }
  
  /* Enhanced focus states */
  .btn:focus, .form-input:focus, .tab:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.2);
  }
  
  /* Apply animations to key elements */
  .layout {
    animation: fadeIn 0.6s ease-out;
  }
  
  .card, .metric-card, .issue {
    animation: fadeIn 0.4s ease-out;
  }
  
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
  }
  
  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
  }
  
  /* Custom scrollbar */
  ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }
  
  ::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: var(--radius-sm);
  }
  
  ::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: var(--radius-sm);
  }
  
  ::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
  }

  /* Inside-bar labels: auto-hide when bar is narrow */
  #timeline .gantt .label.inbar[data-w="narrow"] { display: none; }
  #timeline .gantt .label.inbar[data-kind="duration"] { fill: var(--ink); }

  /* Better contrast in dark mode */
  html.dark-mode #timeline .gantt .label.inbar { fill: #111; }
  html.dark-mode #timeline .gantt .bar rect { fill: #CBD5E1; } /* slightly lighter than bg */

  /* New Layout Styles */
  #new-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--panel);
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: var(--shadow);
    border-bottom: 1px solid var(--line);
  }

  .container.grid {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    align-items: start;
  }

  .panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
  }

  #side .skeleton {
    background: #e2e8f0;
    border-radius: var(--radius-md);
    height: 200px;
  }

  @media (max-width: 768px) {
    .container.grid {
      grid-template-columns: 1fr;
    }
    #side {
      position: static;
      height: auto;
    }
  }
  /* --- DESIGN TOKENS --- */
  :root {
    /* Color Palette (Light Mode) - High Contrast */
    --c-bg: #FFFFFF;
    --c-panel: #F7F9FC;
    --c-text: #18181B;
    --c-text-muted: #52525B;
    --c-border: #D4D4D8;
    --c-accent: #2563EB;
    --c-accent-text: #FFFFFF;
    --c-focus-ring: rgba(37, 99, 235, 0.5);

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --fs-base: 16px;
    --lh-base: 1.6;

    /* Spacing */
    --space-1: 0.25rem; /* 4px */
    --space-2: 0.5rem;  /* 8px */
    --space-3: 0.75rem; /* 12px */
    --space-4: 1rem;    /* 16px */
    --space-6: 1.5rem;  /* 24px */
    --space-8: 2rem;    /* 32px */

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  }

  html.dark-mode {
    /* Color Palette (Dark Mode) - High Contrast */
    --c-bg: #18181B;
    --c-panel: #27272A;
    --c-text: #F4F4F5;
    --c-text-muted: #A1A1AA;
    --c-border: #3F3F46;
    --c-accent: #60A5FA;
    --c-accent-text: #18181B;
  }

  /* --- COMPONENT CLASSES --- */
  body {
    background-color: var(--c-bg);
    color: var(--c-text);
    font-family: var(--font-sans);
    font-size: var(--fs-base);
    line-height: var(--lh-base);
  }

  .app-header {
    background-color: var(--c-panel);
    border-bottom: 1px solid var(--c-border);
    padding: var(--space-3) var(--space-4);
    position: sticky;
    top: 0;
    z-index: 9;
  }

  .grid {
    display: grid;
    gap: var(--space-4);
  }

  .panel {
    background-color: var(--c-panel);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    box-shadow: var(--shadow-sm);
  }

  .row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) 0;
  }

  .label {
    font-weight: 600;
    color: var(--c-text);
  }

  .kpis {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
  }

  .kpi {
    flex: 1;
    padding: var(--space-4);
    text-align: center;
  }

  :root.compact {
    --fs-base: 14px;
    --space-1: 0.125rem;
    --space-2: 0.25rem;
    --space-3: 0.5rem;
    --space-4: 0.75rem;
  }

  .table {
    width: 100%;
    border-collapse: collapse;
  }

  .table thead {
    position: sticky;
    top: 0; /* Or header height if table is at top */
    background-color: var(--c-panel);
    z-index: 1;
  }

  .table th, .table td {
    padding: var(--space-3);
    border-bottom: 1px solid var(--c-border);
    text-align: left;
  }

  .table tbody tr:hover {
    background-color: rgba(0,0,0,0.05);
  }
  html.dark-mode .table tbody tr:hover {
    background-color: rgba(255,255,255,0.05);
  }

  .btn {
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    background-color: var(--c-panel);
    color: var(--c-text);
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
  }

  .btn:hover {
    border-color: var(--c-accent);
  }

  .btn.primary {
    background-color: var(--c-accent);
    color: var(--c-accent-text);
    border-color: var(--c-accent);
  }

  .header-right {
    position: relative;
    display: flex;
    gap: var(--space-2);
  }

  .action-menu {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    background: var(--c-panel);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    z-index: 20;
    min-width: 220px;
    padding: var(--space-2);
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.15s ease-out, transform 0.15s ease-out;
    pointer-events: none;
  }

  .action-menu.open {
    display: block; /* to allow transition */
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  @media (prefers-reduced-motion: reduce) {
    .action-menu {
      transition: none;
    }
  }

  .action-menu .menu-item {
    display: flex;
    align-items: center;
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--c-text);
    font: inherit;
    font-size: var(--fs-base);
  }

  .action-menu .menu-item:hover,
  .action-menu .menu-item:focus,
  .action-menu .menu-item.focus-visible {
    background-color: var(--c-accent);
    color: var(--c-accent-text);
    outline: none;
  }

  input, select, textarea {
    background-color: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    padding: var(--space-2);
    color: var(--c-text);
    font-family: inherit;
  }

  input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--c-focus-ring);
    outline-offset: 1px;
    border-color: var(--c-accent);
  }

  .badge {
    display: inline-block;
    padding: var(--space-1) var(--space-2);
    border-radius: 9999px;
    background-color: var(--c-accent);
    color: var(--c-accent-text);
    font-size: 0.875em;
    font-weight: 600;
  }

  .skeleton {
    background-color: var(--c-border);
    border-radius: var(--radius-md);
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  }

  @keyframes pulse {
    50% {
      opacity: .5;
    }
  }

  /* --- A11Y & PRINT --- */
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }

  @media print {
    body {
      -webkit-print-color-adjust: exact;
      print-color-adjust: exact;
    }
    .app-header, #side {
      display: none !important;
    }
    .grid {
      grid-template-columns: 1fr !important;
    }
    .panel {
      box-shadow: none;
      border: 1px solid #ccc;
    }
  }