:root {
    /* Primitive Color Tokens */
    --color-white: rgba(255, 255, 255, 1);
    --color-black: rgba(0, 0, 0, 1);
    --color-cream-50: rgba(252, 252, 249, 1);
    --color-cream-100: rgba(255, 255, 253, 1);
    --color-gray-200: rgba(245, 245, 245, 1);
    --color-gray-300: rgba(167, 169, 169, 1);
    --color-gray-400: rgba(119, 124, 124, 1);
    --color-slate-500: rgba(98, 108, 113, 1);
    --color-brown-600: rgba(94, 82, 64, 1);
    --color-charcoal-700: rgba(31, 33, 33, 1);
    --color-charcoal-800: rgba(38, 40, 40, 1);
    --color-slate-900: rgba(19, 52, 59, 1);
    --color-teal-300: rgba(50, 184, 198, 1);
    --color-teal-400: rgba(45, 166, 178, 1);
    --color-teal-500: rgba(33, 128, 141, 1);
    --color-teal-600: rgba(29, 116, 128, 1);
    --color-teal-700: rgba(26, 104, 115, 1);
    --color-teal-800: rgba(41, 150, 161, 1);
    --color-red-400: rgba(255, 84, 89, 1);
    --color-red-500: rgba(192, 21, 47, 1);
    --color-orange-400: rgba(230, 129, 97, 1);
    --color-orange-500: rgba(168, 75, 47, 1);
  
    /* RGB versions for opacity control */
    --color-brown-600-rgb: 94, 82, 64;
    --color-teal-500-rgb: 33, 128, 141;
    --color-slate-900-rgb: 19, 52, 59;
    --color-slate-500-rgb: 98, 108, 113;
    --color-red-500-rgb: 192, 21, 47;
    --color-red-400-rgb: 255, 84, 89;
    --color-orange-500-rgb: 168, 75, 47;
    --color-orange-400-rgb: 230, 129, 97;
  
    /* Background color tokens (Light Mode) */
    --color-bg-1: rgba(59, 130, 246, 0.08); /* Light blue */
    --color-bg-2: rgba(245, 158, 11, 0.08); /* Light yellow */
    --color-bg-3: rgba(34, 197, 94, 0.08); /* Light green */
    --color-bg-4: rgba(239, 68, 68, 0.08); /* Light red */
    --color-bg-5: rgba(147, 51, 234, 0.08); /* Light purple */
    --color-bg-6: rgba(249, 115, 22, 0.08); /* Light orange */
    --color-bg-7: rgba(236, 72, 153, 0.08); /* Light pink */
    --color-bg-8: rgba(6, 182, 212, 0.08); /* Light cyan */
  
    /* Semantic Color Tokens (Light Mode) */
    --color-background: var(--color-cream-50);
    --color-surface: var(--color-cream-100);
    --color-text: var(--color-slate-900);
    --color-text-secondary: var(--color-slate-500);
    --color-primary: var(--color-teal-500);
    --color-primary-hover: var(--color-teal-600);
    --color-primary-active: var(--color-teal-700);
    --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
    --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
    --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
    --color-border: rgba(var(--color-brown-600-rgb), 0.2);
    --color-btn-primary-text: var(--color-cream-50);
    --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
    --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
    --color-error: var(--color-red-500);
    --color-success: var(--color-teal-500);
    --color-warning: var(--color-orange-500);
    --color-info: var(--color-slate-500);
    --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
    --color-select-caret: rgba(var(--color-slate-900-rgb), 0.8);
  
    /* Common style patterns */
    --focus-ring: 0 0 0 3px var(--color-focus-ring);
    --focus-outline: 2px solid var(--color-primary);
    --status-bg-opacity: 0.15;
    --status-border-opacity: 0.25;
    --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  
    /* RGB versions for opacity control */
    --color-success-rgb: 33, 128, 141;
    --color-error-rgb: 192, 21, 47;
    --color-warning-rgb: 168, 75, 47;
    --color-info-rgb: 98, 108, 113;
  
    /* Typography */
    --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
      BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo,
      Monaco, Consolas, monospace;
    --font-size-xs: 11px;
    --font-size-sm: 12px;
    --font-size-base: 14px;
    --font-size-md: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 18px;
    --font-size-2xl: 20px;
    --font-size-3xl: 24px;
    --font-size-4xl: 30px;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 550;
    --font-weight-bold: 600;
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --letter-spacing-tight: -0.01em;
  
    /* Spacing */
    --space-0: 0;
    --space-1: 1px;
    --space-2: 2px;
    --space-4: 4px;
    --space-6: 6px;
    --space-8: 8px;
    --space-10: 10px;
    --space-12: 12px;
    --space-16: 16px;
    --space-20: 20px;
    --space-24: 24px;
    --space-32: 32px;
  
    /* Border Radius */
    --radius-sm: 6px;
    --radius-base: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-full: 9999px;
  
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04),
      0 2px 4px -1px rgba(0, 0, 0, 0.02);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04),
      0 4px 6px -2px rgba(0, 0, 0, 0.02);
    --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.15),
      inset 0 -1px 0 rgba(0, 0, 0, 0.03);
  
    /* Animation */
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);
  
    /* Layout */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
  }
  
  /* Dark mode colors */
  @media (prefers-color-scheme: dark) {
    :root {
      /* RGB versions for opacity control (Dark Mode) */
      --color-gray-400-rgb: 119, 124, 124;
      --color-teal-300-rgb: 50, 184, 198;
      --color-gray-300-rgb: 167, 169, 169;
      --color-gray-200-rgb: 245, 245, 245;
  
      /* Background color tokens (Dark Mode) */
      --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
      --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
      --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
      --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
      --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
      --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
      --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
      --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */
      
      /* Semantic Color Tokens (Dark Mode) */
      --color-background: var(--color-charcoal-700);
      --color-surface: var(--color-charcoal-800);
      --color-text: var(--color-gray-200);
      --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
      --color-primary: var(--color-teal-300);
      --color-primary-hover: var(--color-teal-400);
      --color-primary-active: var(--color-teal-800);
      --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
      --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
      --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
      --color-border: rgba(var(--color-gray-400-rgb), 0.3);
      --color-error: var(--color-red-400);
      --color-success: var(--color-teal-300);
      --color-warning: var(--color-orange-400);
      --color-info: var(--color-gray-300);
      --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
      --color-btn-primary-text: var(--color-slate-900);
      --color-card-border: rgba(var(--color-gray-400-rgb), 0.2);
      --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
      --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
        inset 0 -1px 0 rgba(0, 0, 0, 0.15);
      --button-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
      --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
      --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);
  
      /* Common style patterns - updated for dark mode */
      --focus-ring: 0 0 0 3px var(--color-focus-ring);
      --focus-outline: 2px solid var(--color-primary);
      --status-bg-opacity: 0.15;
      --status-border-opacity: 0.25;
      --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
      --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  
      /* RGB versions for dark mode */
      --color-success-rgb: var(--color-teal-300-rgb);
      --color-error-rgb: var(--color-red-400-rgb);
      --color-warning-rgb: var(--color-orange-400-rgb);
      --color-info-rgb: var(--color-gray-300-rgb);
    }
  }
  
  /* Data attribute for manual theme switching */
  [data-color-scheme="dark"] {
    /* RGB versions for opacity control (dark mode) */
    --color-gray-400-rgb: 119, 124, 124;
    --color-teal-300-rgb: 50, 184, 198;
    --color-gray-300-rgb: 167, 169, 169;
    --color-gray-200-rgb: 245, 245, 245;
  
    /* Colorful background palette - Dark Mode */
    --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
    --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
    --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
    --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
    --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
    --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
    --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
    --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */
    
    /* Semantic Color Tokens (Dark Mode) */
    --color-background: var(--color-charcoal-700);
    --color-surface: var(--color-charcoal-800);
    --color-text: var(--color-gray-200);
    --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
    --color-primary: var(--color-teal-300);
    --color-primary-hover: var(--color-teal-400);
    --color-primary-active: var(--color-teal-800);
    --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
    --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
    --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
    --color-border: rgba(var(--color-gray-400-rgb), 0.3);
    --color-error: var(--color-red-400);
    --color-success: var(--color-teal-300);
    --color-warning: var(--color-orange-400);
    --color-info: var(--color-gray-300);
    --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
    --color-btn-primary-text: var(--color-slate-900);
    --color-card-border: rgba(var(--color-gray-400-rgb), 0.15);
    --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
    --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
      inset 0 -1px 0 rgba(0, 0, 0, 0.15);
    --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
    --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);
  
    /* Common style patterns - updated for dark mode */
    --focus-ring: 0 0 0 3px var(--color-focus-ring);
    --focus-outline: 2px solid var(--color-primary);
    --status-bg-opacity: 0.15;
    --status-border-opacity: 0.25;
    --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  
    /* RGB versions for dark mode */
    --color-success-rgb: var(--color-teal-300-rgb);
    --color-error-rgb: var(--color-red-400-rgb);
    --color-warning-rgb: var(--color-orange-400-rgb);
    --color-info-rgb: var(--color-gray-300-rgb);
  }
  
  [data-color-scheme="light"] {
    /* RGB versions for opacity control (light mode) */
    --color-brown-600-rgb: 94, 82, 64;
    --color-teal-500-rgb: 33, 128, 141;
    --color-slate-900-rgb: 19, 52, 59;
    
    /* Semantic Color Tokens (Light Mode) */
    --color-background: var(--color-cream-50);
    --color-surface: var(--color-cream-100);
    --color-text: var(--color-slate-900);
    --color-text-secondary: var(--color-slate-500);
    --color-primary: var(--color-teal-500);
    --color-primary-hover: var(--color-teal-600);
    --color-primary-active: var(--color-teal-700);
    --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
    --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
    --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
    --color-border: rgba(var(--color-brown-600-rgb), 0.2);
    --color-btn-primary-text: var(--color-cream-50);
    --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
    --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
    --color-error: var(--color-red-500);
    --color-success: var(--color-teal-500);
    --color-warning: var(--color-orange-500);
    --color-info: var(--color-slate-500);
    --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
  
    /* RGB versions for light mode */
    --color-success-rgb: var(--color-teal-500-rgb);
    --color-error-rgb: var(--color-red-500-rgb);
    --color-warning-rgb: var(--color-orange-500-rgb);
    --color-info-rgb: var(--color-slate-500-rgb);
  }
  
  /* Base styles */
  html {
    font-size: var(--font-size-base);
    font-family: var(--font-family-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    padding: 0;
  }
  
  *,
  *::before,
  *::after {
    box-sizing: inherit;
  }
  
  /* Typography */
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    margin: 0;
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
    letter-spacing: var(--letter-spacing-tight);
  }
  
  h1 {
    font-size: var(--font-size-4xl);
  }
  h2 {
    font-size: var(--font-size-3xl);
  }
  h3 {
    font-size: var(--font-size-2xl);
  }
  h4 {
    font-size: var(--font-size-xl);
  }
  h5 {
    font-size: var(--font-size-lg);
  }
  h6 {
    font-size: var(--font-size-md);
  }
  
  p {
    margin: 0 0 var(--space-16) 0;
  }
  
  a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-standard);
  }
  
  a:hover {
    color: var(--color-primary-hover);
  }
  
  code,
  pre {
    font-family: var(--font-family-mono);
    font-size: calc(var(--font-size-base) * 0.95);
    background-color: var(--color-secondary);
    border-radius: var(--radius-sm);
  }
  
  code {
    padding: var(--space-1) var(--space-4);
  }
  
  pre {
    padding: var(--space-16);
    margin: var(--space-16) 0;
    overflow: auto;
    border: 1px solid var(--color-border);
  }
  
  pre code {
    background: none;
    padding: 0;
  }
  
  /* Buttons */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-8) var(--space-16);
    border-radius: var(--radius-base);
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.5;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-standard);
    border: none;
    text-decoration: none;
    position: relative;
  }
  
  .btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
  }
  
  .btn--primary {
    background: var(--color-primary);
    color: var(--color-btn-primary-text);
  }
  
  .btn--primary:hover {
    background: var(--color-primary-hover);
  }
  
  .btn--primary:active {
    background: var(--color-primary-active);
  }
  
  .btn--secondary {
    background: var(--color-secondary);
    color: var(--color-text);
  }
  
  .btn--secondary:hover {
    background: var(--color-secondary-hover);
  }
  
  .btn--secondary:active {
    background: var(--color-secondary-active);
  }
  
  .btn--outline {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
  }
  
  .btn--outline:hover {
    background: var(--color-secondary);
  }
  
  .btn--sm {
    padding: var(--space-4) var(--space-12);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-sm);
  }
  
  .btn--lg {
    padding: var(--space-10) var(--space-20);
    font-size: var(--font-size-lg);
    border-radius: var(--radius-md);
  }
  
  .btn--full-width {
    width: 100%;
  }
  
  .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
  }
  
  /* Form elements */
  .form-control {
    display: block;
    width: 100%;
    padding: var(--space-8) var(--space-12);
    font-size: var(--font-size-md);
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    transition: border-color var(--duration-fast) var(--ease-standard),
      box-shadow var(--duration-fast) var(--ease-standard);
  }
  
  textarea.form-control {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
  }
  
  select.form-control {
    padding: var(--space-8) var(--space-12);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: var(--select-caret-light);
    background-repeat: no-repeat;
    background-position: right var(--space-12) center;
    background-size: 16px;
    padding-right: var(--space-32);
  }
  
  /* Add a dark mode specific caret */
  @media (prefers-color-scheme: dark) {
    select.form-control {
      background-image: var(--select-caret-dark);
    }
  }
  
  /* Also handle data-color-scheme */
  [data-color-scheme="dark"] select.form-control {
    background-image: var(--select-caret-dark);
  }
  
  [data-color-scheme="light"] select.form-control {
    background-image: var(--select-caret-light);
  }
  
  .form-control:focus {
    border-color: var(--color-primary);
    outline: var(--focus-outline);
  }
  
  .form-label {
    display: block;
    margin-bottom: var(--space-8);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
  }
  
  .form-group {
    margin-bottom: var(--space-16);
  }
  
  /* Card component */
  .card {
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-card-border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--duration-normal) var(--ease-standard);
  }
  
  .card:hover {
    box-shadow: var(--shadow-md);
  }
  
  .card__body {
    padding: var(--space-16);
  }
  
  .card__header,
  .card__footer {
    padding: var(--space-16);
    border-bottom: 1px solid var(--color-card-border-inner);
  }
  
  /* Status indicators - simplified with CSS variables */
  .status {
    display: inline-flex;
    align-items: center;
    padding: var(--space-6) var(--space-12);
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
  }
  
  .status--success {
    background-color: rgba(
      var(--color-success-rgb, 33, 128, 141),
      var(--status-bg-opacity)
    );
    color: var(--color-success);
    border: 1px solid
      rgba(var(--color-success-rgb, 33, 128, 141), var(--status-border-opacity));
  }
  
  .status--error {
    background-color: rgba(
      var(--color-error-rgb, 192, 21, 47),
      var(--status-bg-opacity)
    );
    color: var(--color-error);
    border: 1px solid
      rgba(var(--color-error-rgb, 192, 21, 47), var(--status-border-opacity));
  }
  
  .status--warning {
    background-color: rgba(
      var(--color-warning-rgb, 168, 75, 47),
      var(--status-bg-opacity)
    );
    color: var(--color-warning);
    border: 1px solid
      rgba(var(--color-warning-rgb, 168, 75, 47), var(--status-border-opacity));
  }
  
  .status--info {
    background-color: rgba(
      var(--color-info-rgb, 98, 108, 113),
      var(--status-bg-opacity)
    );
    color: var(--color-info);
    border: 1px solid
      rgba(var(--color-info-rgb, 98, 108, 113), var(--status-border-opacity));
  }
  
  /* Container layout */
  .container {
    width: 100%;
    margin-right: auto;
    margin-left: auto;
    padding-right: var(--space-16);
    padding-left: var(--space-16);
  }
  
  @media (min-width: 640px) {
    .container {
      max-width: var(--container-sm);
    }
  }
  @media (min-width: 768px) {
    .container {
      max-width: var(--container-md);
    }
  }
  @media (min-width: 1024px) {
    .container {
      max-width: var(--container-lg);
    }
  }
  @media (min-width: 1280px) {
    .container {
      max-width: var(--container-xl);
    }
  }
  
  /* Utility classes */
  .flex {
    display: flex;
  }
  .flex-col {
    flex-direction: column;
  }
  .items-center {
    align-items: center;
  }
  .justify-center {
    justify-content: center;
  }
  .justify-between {
    justify-content: space-between;
  }
  .gap-4 {
    gap: var(--space-4);
  }
  .gap-8 {
    gap: var(--space-8);
  }
  .gap-16 {
    gap: var(--space-16);
  }
  
  .m-0 {
    margin: 0;
  }
  .mt-8 {
    margin-top: var(--space-8);
  }
  .mb-8 {
    margin-bottom: var(--space-8);
  }
  .mx-8 {
    margin-left: var(--space-8);
    margin-right: var(--space-8);
  }
  .my-8 {
    margin-top: var(--space-8);
    margin-bottom: var(--space-8);
  }
  
  .p-0 {
    padding: 0;
  }
  .py-8 {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }
  .px-8 {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
  .py-16 {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
  }
  .px-16 {
    padding-left: var(--space-16);
    padding-right: var(--space-16);
  }
  
  .block {
    display: block;
  }
  .hidden {
    display: none;
  }
  
  /* Accessibility */
  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
  }
  
  :focus-visible {
    outline: var(--focus-outline);
    outline-offset: 2px;
  }
  
  /* Dark mode specifics */
  [data-color-scheme="dark"] .btn--outline {
    border: 1px solid var(--color-border-secondary);
  }
  
  @font-face {
    font-family: 'FKGroteskNeue';
    src: url('https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2')
      format('woff2');
  }
  
  /* END PERPLEXITY DESIGN SYSTEM */
  /* Custom properties for VulnTech theme */
  :root {
    /* VulnTech neon colors */
    --neon-green: #00ff88;
    --neon-cyan: #00ffff;
    --neon-purple: #8b5cf6;
    --neon-red: #ff4757;
    
    /* Dark theme colors */
    --bg-dark: #0a0a0a;
    --card-bg: rgba(255, 255, 255, 0.05);
    --glass-bg: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    
    /* Glassmorphism properties */
    --glass-blur: blur(20px);
    --glass-border: rgba(255, 255, 255, 0.2);
    
    /* Form colors */
    --form-bg: rgba(255, 255, 255, 0.03);
    --form-border: rgba(255, 255, 255, 0.1);
    --form-border-focus: var(--neon-green);
    --form-error: var(--neon-red);
    --form-success: var(--neon-green);
    
    /* Animations */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: var(--font-family-base);
    background: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
  }
  
  /* Toast notifications */
  .toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  
  .toast {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 15px 20px;
    color: var(--text-primary);
    min-width: 300px;
    transform: translateX(400px);
    opacity: 0;
    transition: all var(--transition-smooth);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  }
  
  .toast.show {
    transform: translateX(0);
    opacity: 1;
  }
  
  .toast.success {
    border-color: var(--neon-green);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
  }
  
  .toast.error {
    border-color: var(--neon-red);
    box-shadow: 0 0 20px rgba(255, 71, 87, 0.3);
  }
  
  /* Mobile menu button */
  .mobile-menu-btn {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 12px;
    cursor: pointer;
    backdrop-filter: var(--glass-blur);
    transition: all var(--transition-smooth);
  }
  
  .mobile-menu-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--neon-green);
    margin: 4px 0;
    border-radius: 2px;
    transition: all var(--transition-smooth);
    box-shadow: 0 0 10px var(--neon-green);
  }
  
  .mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  /* Mobile overlay */
  .mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--transition-smooth);
  }
  
  .mobile-overlay.active {
    opacity: 1;
  }
  
  /* Main container */
  .main-container {
    display: flex;
    min-height: 100vh;
  }
  
  /* Sidebar */
  .sidebar {
    width: 300px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-right: 1px solid var(--glass-border);
    position: sticky;
    height: 100vh;
    overflow-y: auto;
    z-index: 99;
    transition: transform var(--transition-smooth);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.1);
  }
  
  /* Profile section */
  .profile-section {
    padding: 30px 20px;
    text-align: center;
    border-bottom: 1px solid var(--glass-border);
  }
  
  .profile-avatar-container {
    position: relative;
    display: inline-block;
    margin-bottom: 15px;
  }
  
  .profile-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid var(--neon-green);
    animation: profileGlow 3s ease-in-out infinite alternate;
  }
  
  @keyframes profileGlow {
    0% {
      box-shadow: 0 0 20px var(--neon-green);
    }
    100% {
      box-shadow: 0 0 30px var(--neon-green), 0 0 40px rgba(0, 255, 136, 0.5);
    }
  }
  
  .profile-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--text-primary);
  }
  
  .profile-email {
    font-size: 14px;
    color: var(--text-secondary);
  }
  
  /* Navigation */
  .nav-menu {
    position: relative;
    padding: 20px 0;
  }
  
  .nav-list {
    list-style: none;
  }
  
  .nav-item {
    margin-bottom: 8px;
  }
  
  .nav-link {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 15px 20px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-smooth);
    position: relative;
    font-size: 15px;
  }
  
  .nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(5px);
  }
  
  .nav-link.active {
    color: var(--neon-green);
    background: rgba(0, 255, 136, 0.1);
    text-shadow: 0 0 10px var(--neon-green);
  }
  
  .nav-icon {
    font-size: 18px;
    margin-right: 12px;
    filter: drop-shadow(0 0 5px currentColor);
  }
  
  .nav-text {
    font-weight: 500;
  }
  
  /* Active indicator */
  .active-indicator {
    position: absolute;
    left: 0;
    width: 4px;
    height: 50px;
    background: linear-gradient(45deg, var(--neon-green), var(--neon-cyan));
    border-radius: 0 4px 4px 0;
    transition: all var(--transition-smooth);
    box-shadow: 0 0 20px var(--neon-green);
    transform: translateY(15px);
  }
  
  /* Content area */
  .content-area {
    flex: 1;
    margin-left: 30px;
    padding: 40px;
    min-height: 100vh;
    animation: fadeInUp 0.8s ease-out;
  }
  
  @keyframes fadeInUp {
    from {
      opacity: 0;
      transform: translateY(30px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  /* Content sections */
  .content-section {
    display: none;
    animation: fadeIn var(--transition-slow);
  }
  
  .content-section.active {
    display: block;
  }
  
  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }
  
  /* Section header */
  .section-header {
    margin-bottom: 30px;
  }
  
  .section-header h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(45deg, var(--neon-green), var(--neon-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
  
  .section-header p {
    color: var(--text-secondary);
    font-size: 16px;
  }
  
  /* Profile card */
  .profile-card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: all var(--transition-smooth);
  }
  
  .profile-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 255, 136, 0.2);
  }
  
  .profile-info {
    display: flex;
    align-items: center;
    gap: 20px;
  }
  
  .profile-avatar-large {
    position: relative;
  }
  
  .avatar-image {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid var(--neon-green);
    box-shadow: 0 0 25px rgba(0, 255, 136, 0.5);
  }
  
  .profile-details h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 5px;
  }
  
  .profile-details p {
    color: var(--text-secondary);
    font-size: 16px;
  }
  
  /* Form card */
  .form-card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: all var(--transition-smooth);
  }
  
  .form-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 255, 136, 0.1);
  }
  
  .form-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
  }
  
  .current-info {
    padding: 20px;
    background: var(--form-bg);
    border: 1px solid var(--form-border);
    border-radius: 12px;
    text-align: center;
  }
  
  .current-info h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
  }
  
  .current-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--neon-cyan);
    text-shadow: 0 0 10px var(--neon-cyan);
  }
  
  .form-row {
    display: flex;
    gap: 16px;
  }
  
  .form-group {
    flex: 1;
    position: relative;
  }
  
  .flex-2 {
    flex: 2;
  }
  
  .floating-label-group {
    position: relative;
    margin-bottom: 20px;
  }
  
  .form-input {
    width: 100%;
    padding: 16px 12px 8px 12px;
    background: var(--form-bg);
    border: 2px solid var(--form-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 16px;
    transition: all var(--transition-smooth);
    outline: none;
    backdrop-filter: var(--glass-blur);
  }
  
  .form-input:focus {
    border-color: var(--form-border-focus);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
    background: rgba(255, 255, 255, 0.05);
  }
  
  .form-input:focus + .floating-label,
  .form-input:not(:placeholder-shown) + .floating-label,
  .form-input.filled + .floating-label {
    transform: translateY(-8px) scale(0.8);
    color: var(--neon-green);
    text-shadow: 0 0 5px var(--neon-green);
  }
  
  .floating-label {
    position: absolute;
    left: 12px;
    top: 12px;
    color: var(--text-muted);
    font-size: 16px;
    pointer-events: none;
    transition: all var(--transition-smooth);
    transform-origin: left;
    background: linear-gradient(to bottom, transparent 50%, var(--form-bg) 50%);
    padding: 0 4px;
  }
  
  .form-input.error {
    border-color: var(--form-error);
    box-shadow: 0 0 20px rgba(255, 71, 87, 0.3);
  }
  
  .form-input.success {
    border-color: var(--form-success);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
  }
  
  .form-error {
    position: absolute;
    bottom: -18px;
    left: 12px;
    font-size: 12px;
    color: var(--form-error);
    opacity: 0;
    transform: translateY(-5px);
    transition: all var(--transition-smooth);
  }
  
  .form-error.show {
    opacity: 1;
    transform: translateY(0);
  }
  
  .password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 18px;
    padding: 4px;
    border-radius: 50%;
    transition: all var(--transition-smooth);
  }
  
  .password-toggle:hover {
    color: var(--neon-green);
    background: rgba(0, 255, 136, 0.1);
  }
  
  .password-strength {
    margin-top: 8px;
  }
  
  .strength-bar {
    width: 100%;
    height: 4px;
    background: var(--form-border);
    border-radius: 2px;
    overflow: hidden;
  }
  
  .strength-fill {
    height: 100%;
    width: 0%;
    border-radius: 2px;
    transition: all var(--transition-smooth);
    background: var(--form-error);
  }
  
  .strength-fill.weak {
    width: 25%;
    background: var(--neon-red);
  }
  
  .strength-fill.fair {
    width: 50%;
    background: #ff9500;
  }
  
  .strength-fill.good {
    width: 75%;
    background: #ffcc00;
  }
  
  .strength-fill.strong {
    width: 100%;
    background: var(--neon-green);
  }
  
  .strength-text {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
    display: block;
  }
  
  .password-requirements {
    background: var(--form-bg);
    border: 1px solid var(--form-border);
    border-radius: 12px;
    padding: 20px;
  }
  
  .password-requirements h4 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
  }
  
  .requirements-list {
    list-style: none;
  }
  
  .requirement {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-muted);
    transition: all var(--transition-smooth);
  }
  
  .requirement.met {
    color: var(--neon-green);
  }
  
  .requirement-icon {
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    transition: all var(--transition-smooth);
  }
  
  .requirement.met .requirement-icon {
    color: var(--neon-green);
    text-shadow: 0 0 5px var(--neon-green);
  }
  
  .requirement.met .requirement-icon::before {
    content: "✓";
  }
  
  .verification-group.hidden {
    display: none;
  }
  
  .button-group {
    display: flex;
    gap: 16px;
    margin-top: 8px;
  }
  
  .btn {
    flex: 1;
    padding: 14px 24px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
  }
  
  .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
  }
  
  .btn-primary {
    background: linear-gradient(45deg, var(--neon-green), var(--neon-cyan));
    color: var(--bg-dark);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.4);
  }
  
  .btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.6);
  }
  
  .btn-secondary {
    background: var(--form-bg);
    border: 2px solid var(--form-border);
    color: var(--text-primary);
    backdrop-filter: var(--glass-blur);
  }
  
  .btn-secondary:hover:not(:disabled) {
    border-color: var(--neon-green);
    background: rgba(0, 255, 136, 0.1);
    color: var(--neon-green);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
  }
  
  .btn-loader {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
  }
  
  .btn-loader.hidden {
    display: none;
  }
  
  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }
  
  /* Danger zone */
  .danger-zone {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid rgba(255, 71, 87, 0.3);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(255, 71, 87, 0.1);
  }
  
  .danger-zone h3 {
    color: var(--neon-red);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  
  .danger-zone h3::before {
    content: "⚠️";
    font-size: 22px;
  }
  
  /* Delete account button */
  .delete-account-btn {
    background: linear-gradient(45deg, var(--neon-red), #ff6b7a);
    border: none;
    border-radius: 12px;
    padding: 12px 24px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all var(--transition-smooth);
    box-shadow: 0 0 20px rgba(255, 71, 87, 0.4);
    margin-bottom: 15px;
  }
  
  .delete-account-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(255, 71, 87, 0.6);
    background: linear-gradient(45deg, #ff6b7a, var(--neon-red));
  }
  
  .delete-account-btn:active {
    transform: translateY(0);
  }
  
  /* Warning note */
  .warning-note {
    opacity: 0;
    transform: translateY(-20px);
    transition: all var(--transition-smooth);
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid rgba(255, 71, 87, 0.3);
    border-radius: 12px;
    padding: 15px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
  }
  
  .warning-note.show {
    opacity: 1;
    transform: translateY(0);
  }
  
  .warning-icon {
    font-size: 18px;
    margin-top: 2px;
  }
  
  .warning-note p {
    color: var(--text-secondary);
    font-size: 14px;
    margin: 0;
  }
  
  /* Settings card for other sections */
  .settings-card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    color: var(--text-secondary);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  }
  
  /* Responsive design */
  @media (max-width: 768px) {
    .mobile-menu-btn {
      display: block;
    }

    .content-area{
      margin-left: 300px;
    }
    
    .sidebar {
      position:fixed;
      transform: translateX(-100%);
      width: 280px;
    }
    
    .sidebar.active {
      transform: translateX(0);
    }
    
    .mobile-overlay {
      display: block;
    }
    
    .content-area {
      margin-left: 0;
      padding: 80px 20px 40px;
    }
    
    .section-header h1 {
      font-size: 28px;
    }
    
    .profile-info {
      flex-direction: column;
      text-align: center;
      gap: 15px;
    }
    
    .form-row {
      flex-direction: column;
      gap: 0;
    }
    
    .button-group {
      flex-direction: column;
    }
    
    .toast-container {
      right: 10px;
      left: 10px;
    }
    
    .toast {
      min-width: auto;
    }
  }
  
  @media (max-width: 480px) {
    .content-area {
      padding: 80px 15px 40px;
    }
    
    .profile-card,
    .danger-zone,
    .form-card {
      padding: 20px;
    }
    
    .section-header h1 {
      font-size: 24px;
    }
    
    .form-input {
      padding: 14px 12px 6px 12px;
    }
  }
  
  /* Custom scrollbar */
  .sidebar::-webkit-scrollbar {
    width: 6px;
  }
  
  .sidebar::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
  }
  
  .sidebar::-webkit-scrollbar-thumb {
    background: var(--neon-green);
    border-radius: 3px;
    box-shadow: 0 0 10px var(--neon-green);
  }
  
  .sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--neon-cyan);
  }

  .settings-card {
    background: var(--card-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    color: var(--text-secondary);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  }