:root {
  /* Modern Energetic Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  
  /* Vibrant Primary Palette */
  --color-electric-blue: rgba(20, 184, 255, 1);
  --color-electric-blue-light: rgba(59, 200, 255, 1);
  --color-electric-blue-dark: rgba(15, 155, 220, 1);
  --color-electric-blue-darker: rgba(10, 130, 190, 1);
  
  /* Energetic Secondary Colors */
  --color-neon-purple: rgba(147, 51, 234, 1);
  --color-neon-purple-light: rgba(168, 85, 247, 1);
  --color-cyber-green: rgba(34, 197, 94, 1);
  --color-cyber-green-light: rgba(74, 222, 128, 1);
  --color-hot-pink: rgba(236, 72, 153, 1);
  --color-hot-pink-light: rgba(251, 113, 133, 1);
  --color-electric-orange: rgba(251, 146, 60, 1);
  --color-electric-orange-light: rgba(254, 215, 170, 1);
  
  /* Modern Neutrals */
  --color-gray-50: rgba(249, 250, 251, 1);
  --color-gray-100: rgba(243, 244, 246, 1);
  --color-gray-200: rgba(229, 231, 235, 1);
  --color-gray-300: rgba(209, 213, 219, 1);
  --color-gray-400: rgba(156, 163, 175, 1);
  --color-gray-500: rgba(107, 114, 128, 1);
  --color-gray-600: rgba(75, 85, 99, 1);
  --color-gray-700: rgba(55, 65, 81, 1);
  --color-gray-800: rgba(31, 41, 55, 1);
  --color-gray-900: rgba(17, 24, 39, 1);
  
  /* Dark Theme Colors */
  --color-dark-bg: rgba(13, 13, 13, 1);
  --color-dark-surface: rgba(24, 24, 27, 1);
  --color-dark-surface-light: rgba(39, 39, 42, 1);

  /* RGB versions for opacity control */
  --color-electric-blue-rgb: 20, 184, 255;
  --color-neon-purple-rgb: 147, 51, 234;
  --color-cyber-green-rgb: 34, 197, 94;
  --color-hot-pink-rgb: 236, 72, 153;
  --color-electric-orange-rgb: 251, 146, 60;
  --color-gray-900-rgb: 17, 24, 39;
  --color-gray-600-rgb: 75, 85, 99;

  /* Gradient Backgrounds */
  --gradient-primary: linear-gradient(135deg, var(--color-electric-blue) 0%, var(--color-neon-purple) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--color-cyber-green) 0%, var(--color-electric-blue) 100%);
  --gradient-accent: linear-gradient(135deg, var(--color-hot-pink) 0%, var(--color-electric-orange) 100%);
  --gradient-hero: linear-gradient(135deg, rgba(20, 184, 255, 0.1) 0%, rgba(147, 51, 234, 0.1) 100%);

  /* Background color tokens with vibrant accents */
  --color-bg-1: rgba(20, 184, 255, 0.08); /* Electric blue */
  --color-bg-2: rgba(251, 146, 60, 0.08); /* Electric orange */
  --color-bg-3: rgba(34, 197, 94, 0.08); /* Cyber green */
  --color-bg-4: rgba(236, 72, 153, 0.08); /* Hot pink */
  --color-bg-5: rgba(147, 51, 234, 0.08); /* Neon purple */
  --color-bg-6: rgba(251, 146, 60, 0.12); /* Electric orange stronger */
  --color-bg-7: rgba(236, 72, 153, 0.12); /* Hot pink stronger */
  --color-bg-8: rgba(6, 182, 212, 0.08); /* Cyan */

  /* Semantic Color Tokens (Modern Light Mode) */
  --color-background: var(--color-gray-50);
  --color-surface: var(--color-white);
  --color-text: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-600);
  --color-primary: var(--color-electric-blue);
  --color-primary-hover: var(--color-electric-blue-dark);
  --color-primary-active: var(--color-electric-blue-darker);
  --color-secondary: rgba(var(--color-neon-purple-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-neon-purple-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-neon-purple-rgb), 0.25);
  --color-border: rgba(var(--color-gray-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-white);
  --color-card-border: rgba(var(--color-gray-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-gray-600-rgb), 0.12);
  --color-error: rgba(239, 68, 68, 1);
  --color-success: var(--color-cyber-green);
  --color-warning: var(--color-electric-orange);
  --color-info: var(--color-electric-blue);
  --color-focus-ring: rgba(var(--color-electric-blue-rgb), 0.4);
  --color-select-caret: rgba(var(--color-gray-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='%2314b8ff' 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: 34, 197, 94;
  --color-error-rgb: 239, 68, 68;
  --color-warning-rgb: 251, 146, 60;
  --color-info-rgb: 20, 184, 255;

  /* 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 {
    /* Modern Dark Mode RGB versions */
    --color-gray-200-rgb: 229, 231, 235;
    --color-gray-300-rgb: 209, 213, 219;
    --color-gray-400-rgb: 156, 163, 175;

    /* Background color tokens (Dark Mode) */
    --color-bg-1: rgba(20, 184, 255, 0.15); /* Electric blue dark */
    --color-bg-2: rgba(251, 146, 60, 0.15); /* Electric orange dark */
    --color-bg-3: rgba(34, 197, 94, 0.15); /* Cyber green dark */
    --color-bg-4: rgba(239, 68, 68, 0.15); /* Error red dark */
    --color-bg-5: rgba(147, 51, 234, 0.15); /* Neon purple dark */
    --color-bg-6: rgba(251, 146, 60, 0.15); /* Electric orange dark */
    --color-bg-7: rgba(236, 72, 153, 0.15); /* Hot pink dark */
    --color-bg-8: rgba(6, 182, 212, 0.15); /* Cyan dark */

    /* Modern Dark Mode Semantic Colors */
    --color-background: var(--color-dark-bg);
    --color-surface: var(--color-dark-surface);
    --color-text: var(--color-gray-100);
    --color-text-secondary: var(--color-gray-400);
    --color-primary: var(--color-electric-blue-light);
    --color-primary-hover: var(--color-electric-blue);
    --color-primary-active: var(--color-electric-blue-dark);
    --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: rgba(239, 68, 68, 1);
    --color-success: var(--color-cyber-green);
    --color-warning: var(--color-electric-orange);
    --color-info: var(--color-electric-blue-light);
    --color-focus-ring: rgba(var(--color-electric-blue-rgb), 0.4);
    --color-btn-primary-text: var(--color-white);
    --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);

    /* Gradients for dark mode */
    --gradient-primary: linear-gradient(135deg, var(--color-electric-blue-light) 0%, var(--color-neon-purple-light) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--color-cyber-green-light) 0%, var(--color-electric-blue-light) 100%);
    --gradient-accent: linear-gradient(135deg, var(--color-hot-pink-light) 0%, var(--color-electric-orange-light) 100%);
    --gradient-hero: linear-gradient(135deg, rgba(20, 184, 255, 0.15) 0%, rgba(147, 51, 234, 0.15) 100%);

    /* RGB versions for dark mode */
    --color-success-rgb: 34, 197, 94;
    --color-error-rgb: 239, 68, 68;
    --color-warning-rgb: 251, 146, 60;
    --color-info-rgb: 20, 184, 255;
  }
}

/* Data attribute for manual theme switching */
[data-color-scheme="dark"] {
  /* Modern Dark Mode RGB versions */
  --color-gray-200-rgb: 229, 231, 235;
  --color-gray-300-rgb: 209, 213, 219;
  --color-gray-400-rgb: 156, 163, 175;

  /* Modern Background palette - Dark Mode */
  --color-bg-1: rgba(20, 184, 255, 0.15); /* Electric blue dark */
  --color-bg-2: rgba(251, 146, 60, 0.15); /* Electric orange dark */
  --color-bg-3: rgba(34, 197, 94, 0.15); /* Cyber green dark */
  --color-bg-4: rgba(239, 68, 68, 0.15); /* Error red dark */
  --color-bg-5: rgba(147, 51, 234, 0.15); /* Neon purple dark */
  --color-bg-6: rgba(251, 146, 60, 0.15); /* Electric orange dark */
  --color-bg-7: rgba(236, 72, 153, 0.15); /* Hot pink dark */
  --color-bg-8: rgba(6, 182, 212, 0.15); /* Cyan dark */

  /* Modern Semantic Color Tokens (Dark Mode) */
  --color-background: var(--color-dark-bg);
  --color-surface: var(--color-dark-surface);
  --color-text: var(--color-gray-100);
  --color-text-secondary: var(--color-gray-400);
  --color-primary: var(--color-electric-blue-light);
  --color-primary-hover: var(--color-electric-blue);
  --color-primary-active: var(--color-electric-blue-dark);
  --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: rgba(239, 68, 68, 1);
  --color-success: var(--color-cyber-green);
  --color-warning: var(--color-electric-orange);
  --color-info: var(--color-electric-blue-light);
  --color-focus-ring: rgba(var(--color-electric-blue-rgb), 0.4);
  --color-btn-primary-text: var(--color-white);
  --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);

  /* Gradients for dark mode */
  --gradient-primary: linear-gradient(135deg, var(--color-electric-blue-light) 0%, var(--color-neon-purple-light) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--color-cyber-green-light) 0%, var(--color-electric-blue-light) 100%);
  --gradient-accent: linear-gradient(135deg, var(--color-hot-pink-light) 0%, var(--color-electric-orange-light) 100%);
  --gradient-hero: linear-gradient(135deg, rgba(20, 184, 255, 0.15) 0%, rgba(147, 51, 234, 0.15) 100%);

  /* RGB versions for dark mode */
  --color-success-rgb: 34, 197, 94;
  --color-error-rgb: 239, 68, 68;
  --color-warning-rgb: 251, 146, 60;
  --color-info-rgb: 20, 184, 255;
}

/* 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(--gradient-primary);
  color: var(--color-btn-primary-text);
  box-shadow: 0 4px 15px rgba(var(--color-electric-blue-rgb), 0.3);
  transition: all var(--duration-normal) var(--ease-standard);
}

.btn--primary:hover {
  background: var(--gradient-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(var(--color-electric-blue-rgb), 0.4);
}

.btn--primary:active {
  background: var(--gradient-primary);
  transform: translateY(0);
  box-shadow: 0 4px 15px rgba(var(--color-electric-blue-rgb), 0.3);
}

.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: 2px solid var(--color-electric-blue);
  color: var(--color-electric-blue);
  transition: all var(--duration-normal) var(--ease-standard);
}

.btn--outline:hover {
  background: var(--color-electric-blue);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(var(--color-electric-blue-rgb), 0.3);
}

.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 */
/* Header */
.header {
  background: rgba(var(--color-white), 0.95);
  border-bottom: 1px solid rgba(var(--color-electric-blue-rgb), 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  transition: all var(--duration-normal) var(--ease-standard);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-16) 0;
}

.nav__brand {
  flex-shrink: 0;
}

.nav__logo {
  height: 40px;
  width: auto;
  margin: 0;
  transition: all var(--duration-normal) var(--ease-standard);
  filter: drop-shadow(0 2px 4px rgba(var(--color-electric-blue-rgb), 0.2));
  max-width: 200px;
  object-fit: contain;
}

.nav__logo:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 4px 8px rgba(var(--color-electric-blue-rgb), 0.3));
}

/* Fallback for logo load error */
.nav__logo[alt]:empty::before {
  content: attr(alt);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__menu {
  display: flex;
  align-items: center;
}

.nav__list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-32);
}

.nav__link {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  transition: all var(--duration-fast) var(--ease-standard);
  position: relative;
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-base);
}

.nav__link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--duration-fast) var(--ease-standard);
}

.nav__link:hover {
  color: var(--color-electric-blue);
  background: rgba(var(--color-electric-blue-rgb), 0.05);
}

.nav__link:hover::before {
  width: 80%;
}

.nav__actions {
  flex-shrink: 0;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-8);
  gap: var(--space-4);
}

.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--duration-fast) var(--ease-standard);
}

/* Hero Section */
.hero {
  background: var(--gradient-hero);
  background-size: 400% 400%;
  animation: gradientShift 8s ease infinite;
  padding: calc(var(--space-32) * 3) 0 calc(var(--space-32) * 2) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at top center, rgba(var(--color-electric-blue-rgb), 0.1) 0%, transparent 70%);
  pointer-events: none;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.hero__content {
  display: grid;
  gap: calc(var(--space-32) * 2);
  align-items: center;
}

.hero__text {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero__title {
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-4xl));
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-24);
  line-height: var(--line-height-tight);
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: calc(var(--space-32) * 1.5);
  line-height: var(--line-height-normal);
}

.hero__actions {
  display: flex;
  gap: var(--space-16);
  justify-content: center;
  flex-wrap: wrap;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-32);
  margin-top: calc(var(--space-32) * 2);
}

.stat-item {
  text-align: center;
  padding: var(--space-24);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
}

.stat-item__value {
  display: block;
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-8);
}

.stat-item__label {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

/* Problem Statement */
.problem {
  padding: calc(var(--space-32) * 2) 0;
  background: var(--color-surface);
}

.problem__content {
  text-align: center;
}

.problem__title {
  font-size: var(--font-size-3xl);
  margin-bottom: calc(var(--space-32) * 1.5);
}

.problem__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-32);
  margin-top: calc(var(--space-32) * 1.5);
}

.problem-card {
  padding: var(--space-32);
  background: var(--color-background);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  text-align: left;
}

.problem-card h3 {
  color: var(--color-error);
  margin-bottom: var(--space-16);
  font-size: var(--font-size-xl);
}

.problem-card p {
  color: var(--color-text-secondary);
  margin: 0;
}

/* Features Section */
.features {
  padding: calc(var(--space-32) * 2) 0;
}

.features__header {
  text-align: center;
  margin-bottom: calc(var(--space-32) * 2);
}

.features__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-16);
}

.features__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-32);
}

.feature-card {
  padding: var(--space-32);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  transition: all var(--duration-normal) var(--ease-standard);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--duration-normal) var(--ease-standard);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(var(--color-electric-blue-rgb), 0.15);
  border-color: rgba(var(--color-electric-blue-rgb), 0.3);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card__icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-16);
  display: block;
  padding: var(--space-12);
  border-radius: var(--radius-lg);
  background: var(--gradient-hero);
  text-align: center;
  width: fit-content;
  transition: all var(--duration-normal) var(--ease-standard);
}

.feature-card:hover .feature-card__icon {
  transform: scale(1.1) rotate(5deg);
}

.feature-card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-12);
}

.feature-card__description {
  color: var(--color-text-secondary);
  margin: 0;
}

/* Use Cases */
.use-cases {
  padding: calc(var(--space-32) * 2) 0;
  background: var(--color-bg-2);
}

.use-cases__header {
  text-align: center;
  margin-bottom: calc(var(--space-32) * 2);
}

.use-cases__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-16);
}

.use-cases__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.use-cases__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-32);
}

.use-case-card {
  padding: var(--space-32);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  transition: all var(--duration-normal) var(--ease-standard);
}

.use-case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.use-case-card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-16);
  color: var(--color-primary);
}

.use-case-card__description {
  margin-bottom: var(--space-16);
  color: var(--color-text);
}

.use-case-card__example {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-style: italic;
  margin: 0;
}

/* Technology Section */
.technology {
  padding: calc(var(--space-32) * 2) 0;
  background: var(--color-surface);
}

.technology__content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.technology__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-24);
}

.technology__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-32);
}

.technology__features {
  list-style: none;
  padding: 0;
  text-align: left;
  display: grid;
  gap: var(--space-12);
}

.technology__features li {
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.technology__features li::before {
  content: "✓";
  color: var(--color-success);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
}

/* Enterprise Features */
.enterprise {
  padding: calc(var(--space-32) * 2) 0;
}

.enterprise__header {
  text-align: center;
  margin-bottom: calc(var(--space-32) * 2);
}

.enterprise__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-16);
}

.enterprise__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.enterprise__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-32);
}

.enterprise-feature {
  padding: var(--space-24);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  text-align: center;
}

.enterprise-feature h3 {
  color: var(--color-primary);
  margin-bottom: var(--space-12);
}

.enterprise-feature p {
  color: var(--color-text-secondary);
  margin: 0;
}

/* Testimonials */
.testimonials {
  padding: calc(var(--space-32) * 2) 0;
  background: var(--color-bg-1);
}

.testimonials__header {
  text-align: center;
  margin-bottom: calc(var(--space-32) * 2);
}

.testimonials__title {
  font-size: var(--font-size-3xl);
}

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-32);
}

.testimonial-card {
  padding: var(--space-32);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
}

.testimonial-card__quote {
  font-size: var(--font-size-lg);
  font-style: italic;
  margin-bottom: var(--space-24);
  color: var(--color-text);
}

.testimonial-card__name {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-4);
}

.testimonial-card__title {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Pricing */
.pricing {
  padding: calc(var(--space-32) * 2) 0;
}

.pricing__header {
  text-align: center;
  margin-bottom: calc(var(--space-32) * 2);
}

.pricing__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-16);
}

.pricing__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
}

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-32);
  align-items: start;
}

.pricing-card {
  padding: var(--space-32);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  position: relative;
  text-align: center;
}

.pricing-card--featured {
  border-color: var(--color-electric-blue);
  transform: scale(1.05);
  background: linear-gradient(135deg, rgba(var(--color-electric-blue-rgb), 0.03) 0%, rgba(var(--color-neon-purple-rgb), 0.03) 100%);
  box-shadow: 0 20px 40px rgba(var(--color-electric-blue-rgb), 0.15);
}

.pricing-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: var(--color-btn-primary-text);
  padding: var(--space-6) var(--space-16);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  box-shadow: 0 8px 20px rgba(var(--color-electric-blue-rgb), 0.3);
}

.pricing-card__name {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-16);
}

.pricing-card__price {
  margin-bottom: var(--space-16);
}

.pricing-card__amount {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.pricing-card__period {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
}

.pricing-card__description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-24);
}

.pricing-card__features {
  list-style: none;
  padding: 0;
  margin-bottom: var(--space-32);
  text-align: left;
}

.pricing-card__features li {
  padding: var(--space-8) 0;
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.pricing-card__features li::before {
  content: "✓";
  color: var(--color-success);
  font-weight: var(--font-weight-bold);
}

/* CTA Section */
.cta {
  padding: calc(var(--space-32) * 2) 0;
  background: var(--gradient-secondary);
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center, rgba(var(--color-cyber-green-rgb), 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.cta__content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.cta__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-16);
}

.cta__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-32);
}

.cta__actions {
  display: flex;
  gap: var(--space-16);
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: calc(var(--space-32) * 2) 0 var(--space-32) 0;
}

.footer__content {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: calc(var(--space-32) * 2);
  margin-bottom: var(--space-32);
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  height: 32px;
  width: auto;
  margin-bottom: var(--space-8);
  filter: drop-shadow(0 1px 2px rgba(var(--color-electric-blue-rgb), 0.2));
  max-width: 150px;
  object-fit: contain;
}

.footer__tagline {
  color: var(--color-text-secondary);
  margin: 0;
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-32);
}

.footer__column h4 {
  margin-bottom: var(--space-16);
  color: var(--color-text);
}

.footer__column ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__column li {
  margin-bottom: var(--space-8);
}

.footer__column a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.footer__column a:hover {
  color: var(--color-primary);
}

.footer__bottom {
  text-align: center;
  padding-top: var(--space-32);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal.hidden {
  display: none;
}

.modal__backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal__content {
  position: relative;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow: auto;
  box-shadow: var(--shadow-lg);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-24);
  border-bottom: 1px solid var(--color-border);
}

.modal__header h3 {
  margin: 0;
}

.modal__close {
  background: none;
  border: none;
  font-size: var(--font-size-3xl);
  cursor: pointer;
  color: var(--color-text-secondary);
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal__close:hover {
  color: var(--color-text);
}

.modal__body {
  padding: var(--space-24);
}

/* Demo Form */
.demo-form .form-group {
  margin-bottom: var(--space-20);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav__menu {
    display: none;
  }
  
  .nav__toggle {
    display: flex;
  }
  
  .nav__logo {
    height: 36px;
  }
  
  .footer__logo {
    height: 28px;
  }
  
  .hero__actions {
    flex-direction: column;
    align-items: center;
  }
  
  .hero__stats {
    grid-template-columns: 1fr;
  }
  
  .features__grid,
  .use-cases__grid,
  .pricing__grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-card--featured {
    transform: none;
  }
  
  .footer__content {
    grid-template-columns: 1fr;
  }
  
  .footer__links {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .cta__actions {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--space-32) 0;
  }
  
  .hero__title {
    font-size: var(--font-size-3xl);
  }
  
  .hero__subtitle {
    font-size: var(--font-size-lg);
  }
  
  .btn--lg {
    width: 100%;
  }
  
  .footer__links {
    grid-template-columns: 1fr;
  }
  
  .modal__content {
    width: 95%;
  }
}