:root {
  /* Adaptive palette fallbacks so the system works before JS hydration */
  --basis-light-background: #fdfefe;
  --basis-light-surface: #ffffff;
  --basis-light-surfaceRaised: #f6f8fb;
  --basis-light-surfaceMuted: #eef2f7;
  --basis-light-border: #dce3ef;
  --basis-light-borderSubtle: #edf1f8;
  --basis-light-borderStrong: #c5cfdd;
  --basis-light-text: #0f172a;
  --basis-light-textSecondary: #4b5563;
  --basis-light-textMuted: #6b7280;
  --basis-light-primary: #1d4ed8;
  --basis-light-primaryHover: #1a43c2;
  --basis-light-primaryActive: #1639ab;
  --basis-light-primaryContrast: #ffffff;
  --basis-light-primarySoft: rgba(29, 78, 216, 0.08);
  --basis-light-primarySoftHover: rgba(29, 78, 216, 0.12);
  --basis-light-primarySoftActive: rgba(29, 78, 216, 0.18);
  --basis-light-primarySoftBorder: #d1ddf7;
  --basis-light-secondary: rgba(148, 163, 184, 0.06);
  --basis-light-secondaryHover: rgba(148, 163, 184, 0.1);
  --basis-light-secondaryActive: rgba(148, 163, 184, 0.14);
  --basis-light-secondarySolid: #cbd5e1;
  --basis-light-secondarySolidHover: #bec9d6;
  --basis-light-secondarySolidActive: #b0bccd;
  --basis-light-tertiary: rgba(100, 116, 139, 0.08);
  --basis-light-tertiaryHover: rgba(100, 116, 139, 0.12);
  --basis-light-tertiaryActive: rgba(100, 116, 139, 0.18);
  --basis-light-tertiarySolid: #dce3ef;
  --basis-light-tertiarySolidHover: #cfd7e6;
  --basis-light-tertiarySolidActive: #c1cadb;
  --basis-light-focusRing: rgba(29, 78, 216, 0.3);
  --basis-light-selectCaret: #0f172a;
  --basis-light-success: #10b981;
  --basis-light-warning: #f59e0b;
  --basis-light-danger: #ef4444;
  --basis-light-info: #3b82f6;
  --basis-light-cardBorder: rgba(213, 223, 238, 0.16);
  --basis-light-cardBorderInner: rgba(225, 233, 244, 0.12);

  --basis-dark-background: #05070b;
  --basis-dark-surface: #090c11;
  --basis-dark-surfaceRaised: #0f141d;
  --basis-dark-surfaceMuted: #161c27;
  --basis-dark-border: #1f2633;
  --basis-dark-borderSubtle: #171d27;
  --basis-dark-borderStrong: #2a323f;
  --basis-dark-text: #f1f5f9;
  --basis-dark-textSecondary: #c7d2e2;
  --basis-dark-textMuted: #94a3b8;
  --basis-dark-primary: #60a5fa;
  --basis-dark-primaryHover: #4f8ee6;
  --basis-dark-primaryActive: #4076cf;
  --basis-dark-primaryContrast: #05070b;
  --basis-dark-primarySoft: rgba(96, 165, 250, 0.18);
  --basis-dark-primarySoftHover: rgba(96, 165, 250, 0.24);
  --basis-dark-primarySoftActive: rgba(96, 165, 250, 0.3);
  --basis-dark-primarySoftBorder: #2a3344;
  --basis-dark-secondary: rgba(148, 163, 184, 0.18);
  --basis-dark-secondaryHover: rgba(148, 163, 184, 0.24);
  --basis-dark-secondaryActive: rgba(148, 163, 184, 0.28);
  --basis-dark-secondarySolid: #8895a8;
  --basis-dark-secondarySolidHover: #9aa7b8;
  --basis-dark-secondarySolidActive: #acb8c8;
  --basis-dark-tertiary: rgba(100, 116, 139, 0.2);
  --basis-dark-tertiaryHover: rgba(100, 116, 139, 0.26);
  --basis-dark-tertiaryActive: rgba(100, 116, 139, 0.32);
  --basis-dark-tertiarySolid: #556073;
  --basis-dark-tertiarySolidHover: #657082;
  --basis-dark-tertiarySolidActive: #758093;
  --basis-dark-focusRing: rgba(96, 165, 250, 0.3);
  --basis-dark-selectCaret: #f1f5f9;
  --basis-dark-success: #10b981;
  --basis-dark-warning: #f59e0b;
  --basis-dark-danger: #f97373;
  --basis-dark-info: #60a5fa;
  --basis-dark-cardBorder: rgba(31, 38, 51, 0.18);
  --basis-dark-cardBorderInner: rgba(23, 29, 39, 0.16);

  /* Semantic tokens derive from the light palette by default */
  --color-background: var(--basis-light-background);
  --color-surface: var(--basis-light-surface);
  --color-surface-raised: var(--basis-light-surfaceRaised);
  --color-surface-muted: var(--basis-light-surfaceMuted);
  --color-text: var(--basis-light-text);
  --color-text-secondary: var(--basis-light-textSecondary);
  --color-text-muted: var(--basis-light-textMuted);
  --color-border: var(--basis-light-border);
  --color-border-light: var(--basis-light-borderSubtle);
  --color-border-secondary: var(--basis-light-borderStrong);
  --color-primary: var(--basis-light-primary);
  --color-primary-hover: var(--basis-light-primaryHover);
  --color-primary-active: var(--basis-light-primaryActive);
  --color-primary-soft: var(--basis-light-primarySoft);
  --color-primary-soft-hover: var(--basis-light-primarySoftHover);
  --color-primary-soft-active: var(--basis-light-primarySoftActive);
  --color-primary-soft-border: var(--basis-light-primarySoftBorder);
  --color-btn-primary-text: var(--basis-light-primaryContrast);
  --color-secondary: var(--basis-light-secondary);
  --color-secondary-hover: var(--basis-light-secondaryHover);
  --color-secondary-active: var(--basis-light-secondaryActive);
  --color-secondary-solid: var(--basis-light-secondarySolid);
  --color-secondary-solid-hover: var(--basis-light-secondarySolidHover);
  --color-secondary-solid-active: var(--basis-light-secondarySolidActive);
  --color-tertiary: var(--basis-light-tertiary);
  --color-tertiary-hover: var(--basis-light-tertiaryHover);
  --color-tertiary-active: var(--basis-light-tertiaryActive);
  --color-tertiary-solid: var(--basis-light-tertiarySolid);
  --color-tertiary-solid-hover: var(--basis-light-tertiarySolidHover);
  --color-tertiary-solid-active: var(--basis-light-tertiarySolidActive);
  --color-focus-ring: var(--basis-light-focusRing);
  --color-select-caret: var(--basis-light-selectCaret);
  --color-card-border: var(--basis-light-cardBorder);
  --color-card-border-inner: var(--basis-light-cardBorderInner);
  --color-success: var(--basis-light-success);
  --color-warning: var(--basis-light-warning);
  --color-error: var(--basis-light-danger);
  --color-danger: var(--basis-light-danger);
  --color-info: var(--basis-light-info);
  --color-mode: 'monochrome';

  /* Numeric fallbacks for status RGB tokens (JS will keep them in sync) */
  --color-success-rgb: 16, 185, 129;
  --color-warning-rgb: 245, 158, 11;
  --color-error-rgb: 239, 68, 68;
  --color-info-rgb: 59, 130, 246;

  /* 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");

  /* 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);

  /* Legacy basis tokens */
  --bf-font-mono: 'SF Mono', 'Monaco', 'Menlo', 'Consolas', 'Ubuntu Mono',
    monospace;
  --bf-font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;
  --bf-space-xs: 0.25rem;
  --bf-space-sm: 0.5rem;
  --bf-space-md: 1rem;
  --bf-space-lg: 1.5rem;
  --bf-space-xl: 2rem;
  --bf-space-2xl: 3rem;
  --bf-space-3xl: 4rem;
  --bf-radius-none: 0;
  --bf-radius-sm: 0.25rem;
  --bf-radius-md: 0.375rem;
  --bf-radius-lg: 0.5rem;
  --bf-radius-xl: 0.75rem;
  --bf-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --bf-shadow-md: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --bf-shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.07),
    0 2px 4px rgba(0, 0, 0, 0.06);
  --bf-shadow-xl: 0 10px 15px rgba(0, 0, 0, 0.1),
    0 4px 6px rgba(0, 0, 0, 0.05);
  --bf-transition-fast: 0.15s ease;
  --bf-transition-normal: 0.3s ease;

  /* 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 {
    --color-background: var(--basis-dark-background);
    --color-surface: var(--basis-dark-surface);
    --color-surface-raised: var(--basis-dark-surfaceRaised);
    --color-surface-muted: var(--basis-dark-surfaceMuted);
    --color-text: var(--basis-dark-text);
    --color-text-secondary: var(--basis-dark-textSecondary);
    --color-text-muted: var(--basis-dark-textMuted);
    --color-border: var(--basis-dark-border);
    --color-border-light: var(--basis-dark-borderSubtle);
    --color-border-secondary: var(--basis-dark-borderStrong);
    --color-primary: var(--basis-dark-primary);
    --color-primary-hover: var(--basis-dark-primaryHover);
    --color-primary-active: var(--basis-dark-primaryActive);
    --color-primary-soft: var(--basis-dark-primarySoft);
    --color-primary-soft-hover: var(--basis-dark-primarySoftHover);
    --color-primary-soft-active: var(--basis-dark-primarySoftActive);
    --color-primary-soft-border: var(--basis-dark-primarySoftBorder);
    --color-btn-primary-text: var(--basis-dark-primaryContrast);
    --color-secondary: var(--basis-dark-secondary);
    --color-secondary-hover: var(--basis-dark-secondaryHover);
    --color-secondary-active: var(--basis-dark-secondaryActive);
    --color-secondary-solid: var(--basis-dark-secondarySolid);
    --color-secondary-solid-hover: var(--basis-dark-secondarySolidHover);
    --color-secondary-solid-active: var(--basis-dark-secondarySolidActive);
    --color-tertiary: var(--basis-dark-tertiary);
    --color-tertiary-hover: var(--basis-dark-tertiaryHover);
    --color-tertiary-active: var(--basis-dark-tertiaryActive);
    --color-tertiary-solid: var(--basis-dark-tertiarySolid);
    --color-tertiary-solid-hover: var(--basis-dark-tertiarySolidHover);
    --color-tertiary-solid-active: var(--basis-dark-tertiarySolidActive);
    --color-focus-ring: var(--basis-dark-focusRing);
    --color-select-caret: var(--basis-dark-selectCaret);
    --color-card-border: var(--basis-dark-cardBorder);
    --color-card-border-inner: var(--basis-dark-cardBorderInner);
    --color-success: var(--basis-dark-success);
    --color-warning: var(--basis-dark-warning);
    --color-error: var(--basis-dark-danger);
    --color-danger: var(--basis-dark-danger);
    --color-info: var(--basis-dark-info);
    --color-success-rgb: 16, 185, 129;
    --color-warning-rgb: 245, 158, 11;
    --color-error-rgb: 249, 115, 115;
    --color-info-rgb: 96, 165, 250;
    --focus-ring: 0 0 0 3px var(--color-focus-ring);
    --focus-outline: 2px solid var(--color-primary);
  }
}

/* Data attribute for manual theme switching */
[data-color-scheme="dark"] {
  --color-background: var(--basis-dark-background);
  --color-surface: var(--basis-dark-surface);
  --color-surface-raised: var(--basis-dark-surfaceRaised);
  --color-surface-muted: var(--basis-dark-surfaceMuted);
  --color-text: var(--basis-dark-text);
  --color-text-secondary: var(--basis-dark-textSecondary);
  --color-text-muted: var(--basis-dark-textMuted);
  --color-border: var(--basis-dark-border);
  --color-border-light: var(--basis-dark-borderSubtle);
  --color-border-secondary: var(--basis-dark-borderStrong);
  --color-primary: var(--basis-dark-primary);
  --color-primary-hover: var(--basis-dark-primaryHover);
  --color-primary-active: var(--basis-dark-primaryActive);
  --color-primary-soft: var(--basis-dark-primarySoft);
  --color-primary-soft-hover: var(--basis-dark-primarySoftHover);
  --color-primary-soft-active: var(--basis-dark-primarySoftActive);
  --color-primary-soft-border: var(--basis-dark-primarySoftBorder);
  --color-btn-primary-text: var(--basis-dark-primaryContrast);
  --color-secondary: var(--basis-dark-secondary);
  --color-secondary-hover: var(--basis-dark-secondaryHover);
  --color-secondary-active: var(--basis-dark-secondaryActive);
  --color-secondary-solid: var(--basis-dark-secondarySolid);
  --color-secondary-solid-hover: var(--basis-dark-secondarySolidHover);
  --color-secondary-solid-active: var(--basis-dark-secondarySolidActive);
  --color-tertiary: var(--basis-dark-tertiary);
  --color-tertiary-hover: var(--basis-dark-tertiaryHover);
  --color-tertiary-active: var(--basis-dark-tertiaryActive);
  --color-tertiary-solid: var(--basis-dark-tertiarySolid);
  --color-tertiary-solid-hover: var(--basis-dark-tertiarySolidHover);
  --color-tertiary-solid-active: var(--basis-dark-tertiarySolidActive);
  --color-focus-ring: var(--basis-dark-focusRing);
  --color-select-caret: var(--basis-dark-selectCaret);
  --color-card-border: var(--basis-dark-cardBorder);
  --color-card-border-inner: var(--basis-dark-cardBorderInner);
  --color-success: var(--basis-dark-success);
  --color-warning: var(--basis-dark-warning);
  --color-error: var(--basis-dark-danger);
  --color-danger: var(--basis-dark-danger);
  --color-info: var(--basis-dark-info);
  --color-success-rgb: 16, 185, 129;
  --color-warning-rgb: 245, 158, 11;
  --color-error-rgb: 249, 115, 115;
  --color-info-rgb: 96, 165, 250;
}

[data-color-scheme="light"] {
  --color-background: var(--basis-light-background);
  --color-surface: var(--basis-light-surface);
  --color-surface-raised: var(--basis-light-surfaceRaised);
  --color-surface-muted: var(--basis-light-surfaceMuted);
  --color-text: var(--basis-light-text);
  --color-text-secondary: var(--basis-light-textSecondary);
  --color-text-muted: var(--basis-light-textMuted);
  --color-border: var(--basis-light-border);
  --color-border-light: var(--basis-light-borderSubtle);
  --color-border-secondary: var(--basis-light-borderStrong);
  --color-primary: var(--basis-light-primary);
  --color-primary-hover: var(--basis-light-primaryHover);
  --color-primary-active: var(--basis-light-primaryActive);
  --color-primary-soft: var(--basis-light-primarySoft);
  --color-primary-soft-hover: var(--basis-light-primarySoftHover);
  --color-primary-soft-active: var(--basis-light-primarySoftActive);
  --color-primary-soft-border: var(--basis-light-primarySoftBorder);
  --color-btn-primary-text: var(--basis-light-primaryContrast);
  --color-secondary: var(--basis-light-secondary);
  --color-secondary-hover: var(--basis-light-secondaryHover);
  --color-secondary-active: var(--basis-light-secondaryActive);
  --color-secondary-solid: var(--basis-light-secondarySolid);
  --color-secondary-solid-hover: var(--basis-light-secondarySolidHover);
  --color-secondary-solid-active: var(--basis-light-secondarySolidActive);
  --color-tertiary: var(--basis-light-tertiary);
  --color-tertiary-hover: var(--basis-light-tertiaryHover);
  --color-tertiary-active: var(--basis-light-tertiaryActive);
  --color-tertiary-solid: var(--basis-light-tertiarySolid);
  --color-tertiary-solid-hover: var(--basis-light-tertiarySolidHover);
  --color-tertiary-solid-active: var(--basis-light-tertiarySolidActive);
  --color-focus-ring: var(--basis-light-focusRing);
  --color-select-caret: var(--basis-light-selectCaret);
  --color-card-border: var(--basis-light-cardBorder);
  --color-card-border-inner: var(--basis-light-cardBorderInner);
  --color-success: var(--basis-light-success);
  --color-warning: var(--basis-light-warning);
  --color-error: var(--basis-light-danger);
  --color-danger: var(--basis-light-danger);
  --color-info: var(--basis-light-info);
  --color-success-rgb: 16, 185, 129;
  --color-warning-rgb: 245, 158, 11;
  --color-error-rgb: 239, 68, 68;
  --color-info-rgb: 59, 130, 246;
}

/* 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-surface-muted, var(--color-surface));
  color: var(--color-text);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-card-border, var(--color-border));
}

code {
  padding: var(--space-1) var(--space-4);
  border: none;
}

pre {
  padding: var(--space-16);
  margin: var(--space-16) 0;
  overflow: auto;
  border: 1px solid var(--color-card-border, 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 */
/* Professional CSS Framework - Adaptive Color System */

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--bf-font-sans);
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: all 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--bf-space-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--bf-space-md);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--bf-space-md);
}

/* Header Styles */
.header {
  background: var(--color-surface);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  transition: all 0.3s ease;
  box-shadow: var(--bf-shadow-sm);
}

.header-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--bf-space-lg) 0;
  border-bottom: 1px solid var(--color-border);
}

.logo-and-name {
  display: flex;
  align-items: center;
  gap: var(--bf-space-md);
}

.logo-mark {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.logo-layer-1,
.logo-layer-2,
.logo-layer-3 {
  transition: fill var(--bf-transition-normal) var(--ease-standard);
}

.logo-layer-1 {
  fill: var(--color-primary, var(--color-text));
}

.logo-layer-2 {
  fill: var(--color-secondary-solid, var(--color-text-secondary));
}

.logo-layer-3 {
  fill: var(--color-tertiary-solid, var(--color-text));
}

.color-mode-selector {
  display: flex;
  gap: var(--bf-space-xs);
  background: var(--color-surface-raised, var(--color-surface));
  border: 1px solid var(--color-border);
  border-radius: var(--bf-radius-lg);
  padding: var(--bf-space-xs);
}

.mode-btn {
  padding: var(--bf-space-md) var(--bf-space-lg);
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: var(--bf-radius-md);
  transition: all var(--bf-transition-fast);
  white-space: nowrap;
}

.mode-btn:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.mode-btn.active {
  background: var(--color-primary, var(--color-text));
  color: var(--color-surface);
  box-shadow: var(--bf-shadow-sm);
}

.hero-section {
  padding: var(--bf-space-3xl) 0;
  text-align: center;
}

.hero-content {
  max-width: 600px;
  margin: var(--bf-space-2xl) auto 0;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--bf-space-md);
  color: var(--color-text);
}

.hero-description {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  margin: 0;
}

.name-showcase {
  max-width: 800px;
  margin: 0 auto;
}

.name-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--bf-space-md);
  margin-bottom: var(--bf-space-xl);
}

.name-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: var(--bf-space-md) var(--bf-space-lg);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--bf-transition-normal);
  text-transform: none;
  letter-spacing: 0.025em;
  border-radius: var(--bf-radius-md);
  box-shadow: var(--bf-shadow-sm);
}

.name-card:hover {
  border-color: var(--color-primary, var(--color-text));
  transform: translateY(-1px);
  box-shadow: var(--bf-shadow-md);
}

.name-card.active {
  background: var(--color-primary, var(--color-text));
  border-color: var(--color-primary, var(--color-text));
  color: var(--color-surface);
  box-shadow: var(--bf-shadow-lg);
}

.framework-name {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
  text-transform: none;
  letter-spacing: 0;
}

/* Color Configurator */
.color-configurator {
  background: var(--color-surface);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  padding: var(--bf-space-2xl) 0;
  transition: all 0.3s ease;
}

.configurator-header {
  text-align: center;
  margin-bottom: var(--bf-space-xl);
}

.configurator-header h3 {
  color: var(--color-text);
  font-size: 1.8rem;
  margin-bottom: var(--bf-space-sm);
}

.current-mode-description {
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.color-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--bf-space-lg);
  margin-bottom: var(--bf-space-xl);
}

.color-input-group {
  background: var(--color-surface-raised, var(--color-surface));
  border: 1px solid var(--color-border);
  border-radius: var(--bf-radius-lg);
  padding: var(--bf-space-lg);
  box-shadow: var(--bf-shadow-sm);
}

.color-input-group label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--bf-space-sm);
  color: var(--color-text);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.input-row {
  display: flex;
  gap: var(--bf-space-sm);
  align-items: center;
}

.input-row input[type="color"] {
  width: 50px;
  height: 50px;
  border: 2px solid var(--color-border);
  background: transparent;
  cursor: pointer;
}

.color-text {
  flex: 1;
  padding: var(--bf-space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--bf-radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--bf-font-mono);
  font-weight: 600;
  text-transform: uppercase;
}

.btn-remove {
  width: 40px;
  height: 40px;
  background: var(--color-danger);
  border: none;
  color: var(--color-surface);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.color-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--bf-space-lg);
  flex-wrap: wrap;
}

.color-preview {
  display: flex;
  justify-content: center;
  margin-top: var(--bf-space-xl);
}

.preview-palette {
  display: flex;
  flex-wrap: wrap;
  gap: var(--bf-space-md);
  padding: var(--bf-space-lg);
  background: var(--color-surface-raised, var(--color-surface));
  border: 1px solid var(--color-border);
  border-radius: var(--bf-radius-lg);
  box-shadow: var(--bf-shadow-sm);
  justify-content: center;
}

.preview-swatch {
  min-width: 120px;
  padding: var(--bf-space-md) var(--bf-space-lg);
  border-radius: var(--bf-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: none;
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
  white-space: nowrap;
  box-shadow: var(--bf-shadow-sm);
}

.preview-swatch[data-color="bg"] {
  background: var(--color-background);
  color: var(--color-text);
}

.preview-swatch[data-color="surface"] {
  background: var(--color-surface);
  color: var(--color-text);
}

.preview-swatch[data-color="text"] {
  background: var(--color-text);
  color: var(--color-surface);
}

/* Kitchen Sink */
.kitchen-sink {
  padding: var(--bf-space-3xl) 0;
}

.kitchen-sink h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: var(--bf-space-3xl);
  color: var(--color-text);
}

.component-section {
  margin-bottom: var(--bf-space-3xl);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--bf-radius-lg);
  overflow: hidden;
  box-shadow: var(--bf-shadow-sm);
}

.component-section h3 {
  background: var(--color-border-light);
  color: var(--color-text);
  padding: var(--bf-space-lg);
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  border-bottom: 1px solid var(--color-border);
}

.component-demo {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--bf-space-xl);
  padding: var(--bf-space-xl);
}

.component-variants {
  display: flex;
  flex-wrap: wrap;
  gap: var(--bf-space-lg);
  align-items: flex-start;
}

.code-snippet {
  background: var(--color-surface-raised, var(--color-surface));
  border: 1px solid var(--color-card-border, var(--color-border));
  padding: var(--bf-space-lg);
  border-radius: var(--bf-radius-md);
  position: relative;
}

.code-snippet pre {
  margin: 0;
  font-family: var(--bf-font-mono);
  color: var(--color-text);
  font-size: 0.8rem;
  line-height: 1.4;
  overflow-x: auto;
}

/* Button Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--bf-space-sm) var(--bf-space-lg);
  border: 1px solid transparent;
  background: var(--color-surface);
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.875rem;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--bf-transition-normal);
  text-transform: none;
  letter-spacing: 0;
  border-radius: var(--bf-radius-md);
  box-shadow: var(--bf-shadow-sm);
  position: relative;
  overflow: hidden;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--bf-shadow-md);
}

.btn:active {
  transform: translateY(0);
  box-shadow: var(--bf-shadow-sm);
}

.btn-primary {
  background: var(--color-primary, var(--color-text));
  border-color: var(--color-primary, var(--color-text));
  color: var(--color-surface);
}

.btn-secondary {
  background: var(--color-secondary);
  border-color: var(--color-secondary, var(--color-border));
  color: var(--color-text);
}

.btn-secondary:hover {
  background: var(--color-secondary-hover);
  border-color: var(--color-secondary-hover);
}

.btn-secondary:active {
  background: var(--color-secondary-active);
  border-color: var(--color-secondary-active);
}

.btn-tertiary {
  background: var(--color-tertiary-solid, var(--color-primary));
  border-color: var(--color-tertiary-solid, var(--color-primary));
  color: var(--color-btn-primary-text);
}

.btn-tertiary:hover {
  background: var(
    --color-tertiary-solid-hover,
    var(--color-tertiary-solid, var(--color-primary))
  );
  border-color: var(
    --color-tertiary-solid-hover,
    var(--color-tertiary-solid, var(--color-primary))
  );
}

.btn-tertiary:active {
  background: var(
    --color-tertiary-solid-active,
    var(--color-tertiary-solid, var(--color-primary))
  );
  border-color: var(
    --color-tertiary-solid-active,
    var(--color-tertiary-solid, var(--color-primary))
  );
}

.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-outline:hover {
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary, var(--color-text));
}

.btn-outline:active {
  background: var(
      --color-primary-soft-hover,
      var(--color-primary-soft, var(--color-primary))
    );
  border-color: var(--color-primary-active);
  color: var(--color-primary, var(--color-text));
}

.btn-ghost {
  background: transparent;
  border: none;
  box-shadow: none;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 400;
}

.btn-ghost:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary, var(--color-text));
}

.btn-sm {
  padding: var(--bf-space-sm) var(--bf-space-md);
  font-size: 0.875rem;
}

.btn-lg {
  padding: var(--bf-space-lg) var(--bf-space-xl);
  font-size: 1.125rem;
}

/* Card Components */
.card {
  background: var(--color-surface-raised, var(--color-surface));
  border: 1px solid var(--color-card-border, var(--color-border));
  box-shadow: var(--bf-shadow-sm);
  margin-bottom: var(--bf-space-lg);
  border-radius: var(--bf-radius-lg);
  overflow: hidden;
  transition: all var(--bf-transition-normal);
  max-width: 600px;
}

.card:hover {
  box-shadow: var(--shadow-md, var(--bf-shadow-lg));
  transform: translateY(-2px);
}

.card-header {
  background: var(--color-surface, var(--color-background));
  color: var(--color-text);
  padding: var(--bf-space-md) var(--bf-space-lg);
  border-bottom: 1px solid var(--color-card-border-inner, var(--color-border));
}

.card-header h4 {
  margin: 0;
  font-size: 1.1rem;
  text-transform: uppercase;
}

.card-body {
  padding: var(--bf-space-md);
}

.card-primary {
  background: var(--color-primary-soft);
  border-color: var(--color-primary-soft-border, var(--color-primary));
}

.card-primary .card-header {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border-bottom-color: var(--color-primary);
}

.card-secondary {
  background: var(--color-secondary);
  border-color: var(--color-secondary-active, var(--color-card-border));
}

.card-secondary .card-header {
  background: var(--color-secondary-solid, var(--color-text));
  color: var(--color-btn-primary-text);
  border-bottom-color: var(
    --color-secondary-solid,
    var(--color-border-secondary)
  );
}

.card-tertiary {
  background: var(--color-tertiary);
  border-color: var(--color-tertiary-active, var(--color-card-border));
}

.card-tertiary .card-header {
  background: var(--color-tertiary-solid, var(--color-text));
  color: var(--color-btn-primary-text);
  border-bottom-color: var(
    --color-tertiary-solid,
    var(--color-border-secondary)
  );
}

/* Alert Components */
.alert {
  padding: var(--bf-space-md);
  margin-bottom: var(--bf-space-md);
  border: 1px solid var(--color-card-border, var(--color-border));
  background: var(--color-surface-raised, var(--color-surface));
  box-shadow: var(--bf-shadow-sm);
  border-radius: var(--bf-radius-md);
  font-size: 0.875rem;
  color: var(--color-text);
}

.alert-primary {
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-soft);
  border-color: var(--color-primary-soft-border, var(--color-primary));
}

.alert-secondary {
  border-left: 4px solid
    var(--color-secondary-solid, var(--color-text-secondary));
  background: var(--color-secondary);
  border-color: var(--color-secondary-active, var(--color-border));
}

.alert-tertiary {
  border-left: 4px solid
    var(--color-tertiary-solid, var(--color-text-secondary));
  background: var(--color-tertiary);
  border-color: var(--color-tertiary-active, var(--color-border));
}

.alert-success {
  border-left: 4px solid var(--color-success);
  background: rgba(var(--color-success-rgb), var(--status-bg-opacity));
  border-color: rgba(var(--color-success-rgb), var(--status-border-opacity));
}

.alert-danger {
  border-left: 4px solid var(--color-danger);
  background: rgba(var(--color-error-rgb), var(--status-bg-opacity));
  border-color: rgba(var(--color-error-rgb), var(--status-border-opacity));
}

/* Form Components */
.form-group {
  margin-bottom: var(--bf-space-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--bf-space-sm);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--bf-space-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.875rem;
  font-family: var(--bf-font-sans);
  border-radius: var(--bf-radius-md);
  transition: all var(--bf-transition-normal);
  box-shadow: var(--bf-shadow-sm);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary, var(--color-text));
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1), var(--bf-shadow-md);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.checkbox-group,
.radio-group {
  display: flex;
  align-items: center;
  gap: var(--bf-space-sm);
  margin-bottom: var(--bf-space-sm);
}

.form-checkbox,
.form-radio {
  width: 16px;
  height: 16px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--bf-radius-sm);
  transition: all var(--bf-transition-fast);
}

/* Table Components */
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--bf-radius-md);
  overflow: hidden;
  box-shadow: var(--bf-shadow-sm);
}

.table thead {
  background: var(--color-border-light);
}

.table th {
  padding: var(--bf-space-md) var(--bf-space-lg);
  text-align: left;
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  color: var(--color-text);
  border-bottom: 2px solid var(--color-border);
}

.table td {
  padding: var(--bf-space-md) var(--bf-space-lg);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.table tbody tr:last-child td {
  border-bottom: none;
}

.table tbody tr {
  transition: background-color var(--bf-transition-fast);
}

.table tbody tr:hover {
  background: var(--color-border-light);
}

.table-striped tbody tr:nth-child(even) {
  background: rgba(0, 0, 0, 0.02);
}

.table-bordered {
  border: 1px solid var(--color-border);
}

.table-bordered th,
.table-bordered td {
  border: 1px solid var(--color-border);
}

.table-compact td,
.table-compact th {
  padding: var(--bf-space-sm) var(--bf-space-md);
}

/* Image Components */
.img-wrapper {
  display: inline-block;
  margin: var(--bf-space-md);
}

.img-fluid {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--bf-radius-md);
  box-shadow: var(--bf-shadow-sm);
  transition: all var(--bf-transition-normal);
}

.img-fluid:hover {
  box-shadow: var(--bf-shadow-lg);
  transform: translateY(-2px);
}

.img-rounded {
  border-radius: var(--bf-radius-lg);
  max-width: 100%;
  height: auto;
  box-shadow: var(--bf-shadow-md);
  transition: all var(--bf-transition-normal);
}

.img-rounded:hover {
  box-shadow: var(--bf-shadow-xl);
  transform: scale(1.02);
}

.img-circle {
  border-radius: var(--radius-full);
  max-width: 100%;
  height: auto;
  box-shadow: var(--bf-shadow-md);
  transition: all var(--bf-transition-normal);
}

.img-circle:hover {
  box-shadow: var(--bf-shadow-xl);
  transform: scale(1.05);
}

/* Switch Components */
.switch-group {
  margin-bottom: var(--bf-space-md);
}

.switch {
  display: flex;
  align-items: center;
  gap: var(--bf-space-md);
  cursor: pointer;
}

.switch-input {
  display: none;
}

.switch-slider {
  width: 44px;
  height: 24px;
  background: var(--color-border-light);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  position: relative;
  transition: all var(--bf-transition-normal);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.switch-slider::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  top: 1px;
  left: 1px;
  transition: all var(--bf-transition-normal);
  box-shadow: var(--bf-shadow-sm);
}

.switch-input:checked + .switch-slider {
  background: var(--color-primary, var(--color-text));
  border-color: var(--color-primary, var(--color-text));
}

.switch-input:checked + .switch-slider::after {
  transform: translateX(20px);
  background: var(--color-surface);
}

.switch-primary .switch-input:checked + .switch-slider {
  background: var(--color-primary, var(--color-text));
  border-color: var(--color-primary, var(--color-text));
}

.switch-secondary .switch-input:checked + .switch-slider {
  background: var(--color-secondary, var(--color-text-secondary));
  border-color: var(--color-secondary, var(--color-text-secondary));
}

.switch-label {
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.9rem;
}

/* Grid Components */
.grid {
  display: grid;
  gap: var(--bf-space-md);
  margin-bottom: var(--bf-space-lg);
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: var(--bf-space-lg);
  text-align: center;
  font-weight: 500;
  text-transform: none;
  border-radius: var(--bf-radius-md);
  box-shadow: var(--bf-shadow-sm);
  transition: all var(--bf-transition-normal);
}

.grid-item:hover {
  box-shadow: var(--bf-shadow-md);
  transform: translateY(-1px);
}

/* Modal Components */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
}

.modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(12, 12, 12, 0.8);
}

.modal-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--bf-radius-lg);
  box-shadow: var(--bf-shadow-xl);
  max-width: 500px;
  width: 90%;
  position: relative;
  z-index: 1001;
}

.modal-header {
  background: var(--color-primary, var(--color-text));
  color: var(--color-surface);
  padding: var(--bf-space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  border-radius: var(--bf-radius-lg) var(--bf-radius-lg) 0 0;
}

.modal-header h4 {
  margin: 0;
  text-transform: uppercase;
}

.modal-close {
  background: none;
  border: none;
  color: var(--color-surface);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.modal-actions {
  display: flex;
  gap: var(--bf-space-md);
  justify-content: flex-end;
  margin-top: var(--bf-space-lg);
}

/* Footer */
.footer {
  background: var(--color-surface);
  color: var(--color-text);
  border-top: 1px solid var(--color-border);
  padding: var(--bf-space-3xl) 0 var(--bf-space-xl) 0;
  transition: all 0.3s ease;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--bf-space-xl);
  margin-bottom: var(--bf-space-xl);
}

.footer-section h4 {
  color: var(--color-primary, var(--color-text));
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--bf-space-md);
}

.footer-section p {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
  margin: 0;
}

.footer-links {
  display: flex;
  gap: var(--bf-space-lg);
}

.footer-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--bf-transition-fast);
}

.footer-link:hover {
  color: var(--color-primary, var(--color-text));
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--bf-space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--bf-space-md);
}

.footer-bottom p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .component-demo {
    grid-template-columns: 1fr;
  }

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

  .framework-name {
    font-size: 1.5rem;
  }

  .logo-mark {
    width: 32px;
    height: 32px;
  }
  
  .color-controls {
    grid-template-columns: 1fr;
  }
  
  .color-actions {
    flex-direction: column;
  }
  
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .component-variants {
    flex-direction: column;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .name-grid {
    grid-template-columns: 1fr;
  }
  
  .btn {
    width: 100%;
    margin-bottom: var(--bf-space-sm);
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-mono { font-family: var(--bf-font-mono); }
.font-sans { font-family: var(--bf-font-sans); }

.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

.hidden { display: none; }
.block { display: block; }
.inline { display: inline; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.grid { display: grid; }

/* Spacing Utilities - Tailwind Style */
.m-0 { margin: 0; }
.m-1 { margin: var(--bf-space-xs); }
.m-2 { margin: var(--bf-space-sm); }
.m-3 { margin: 0.75rem; }
.m-4 { margin: var(--bf-space-md); }
.m-5 { margin: 1.25rem; }
.m-6 { margin: var(--bf-space-lg); }
.m-8 { margin: var(--bf-space-xl); }

.mx-0 { margin-left: 0; margin-right: 0; }
.mx-1 { margin-left: var(--bf-space-xs); margin-right: var(--bf-space-xs); }
.mx-2 { margin-left: var(--bf-space-sm); margin-right: var(--bf-space-sm); }
.mx-3 { margin-left: 0.75rem; margin-right: 0.75rem; }
.mx-4 { margin-left: var(--bf-space-md); margin-right: var(--bf-space-md); }
.mx-6 { margin-left: var(--bf-space-lg); margin-right: var(--bf-space-lg); }
.mx-8 { margin-left: var(--bf-space-xl); margin-right: var(--bf-space-xl); }

.my-0 { margin-top: 0; margin-bottom: 0; }
.my-1 { margin-top: var(--bf-space-xs); margin-bottom: var(--bf-space-xs); }
.my-2 { margin-top: var(--bf-space-sm); margin-bottom: var(--bf-space-sm); }
.my-3 { margin-top: 0.75rem; margin-bottom: 0.75rem; }
.my-4 { margin-top: var(--bf-space-md); margin-bottom: var(--bf-space-md); }
.my-6 { margin-top: var(--bf-space-lg); margin-bottom: var(--bf-space-lg); }
.my-8 { margin-top: var(--bf-space-xl); margin-bottom: var(--bf-space-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--bf-space-xs); }
.mt-2 { margin-top: var(--bf-space-sm); }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: var(--bf-space-md); }
.mt-6 { margin-top: var(--bf-space-lg); }
.mt-8 { margin-top: var(--bf-space-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--bf-space-xs); }
.mb-2 { margin-bottom: var(--bf-space-sm); }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: var(--bf-space-md); }
.mb-6 { margin-bottom: var(--bf-space-lg); }
.mb-8 { margin-bottom: var(--bf-space-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--bf-space-xs); }
.p-2 { padding: var(--bf-space-sm); }
.p-3 { padding: 0.75rem; }
.p-4 { padding: var(--bf-space-md); }
.p-5 { padding: 1.25rem; }
.p-6 { padding: var(--bf-space-lg); }
.p-8 { padding: var(--bf-space-xl); }

.px-0 { padding-left: 0; padding-right: 0; }
.px-1 { padding-left: var(--bf-space-xs); padding-right: var(--bf-space-xs); }
.px-2 { padding-left: var(--bf-space-sm); padding-right: var(--bf-space-sm); }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-4 { padding-left: var(--bf-space-md); padding-right: var(--bf-space-md); }
.px-6 { padding-left: var(--bf-space-lg); padding-right: var(--bf-space-lg); }
.px-8 { padding-left: var(--bf-space-xl); padding-right: var(--bf-space-xl); }

.py-0 { padding-top: 0; padding-bottom: 0; }
.py-1 { padding-top: var(--bf-space-xs); padding-bottom: var(--bf-space-xs); }
.py-2 { padding-top: var(--bf-space-sm); padding-bottom: var(--bf-space-sm); }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-4 { padding-top: var(--bf-space-md); padding-bottom: var(--bf-space-md); }
.py-6 { padding-top: var(--bf-space-lg); padding-bottom: var(--bf-space-lg); }
.py-8 { padding-top: var(--bf-space-xl); padding-bottom: var(--bf-space-xl); }

/* Color Utilities */
.text-primary { color: var(--color-primary, var(--color-text)); }
.text-secondary { color: var(--color-secondary, var(--color-text-secondary)); }
.text-tertiary { color: var(--color-tertiary, var(--color-text)); }

.bg-primary { background-color: var(--color-primary, var(--color-text)); }
.bg-secondary { background-color: var(--color-secondary, var(--color-text-secondary)); }
.bg-tertiary { background-color: var(--color-tertiary, var(--color-text)); }

.border-primary { border-color: var(--color-primary, var(--color-text)); }
.border-secondary { border-color: var(--color-secondary, var(--color-text-secondary)); }
.border-tertiary { border-color: var(--color-tertiary, var(--color-text)); }

/* Animation Utilities */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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

.animate-fade-in {
  animation: fadeIn var(--bf-transition-normal) var(--ease-standard);
}

.animate-slide-in {
  animation: slideIn var(--bf-transition-normal) var(--ease-standard);
}

.animate-scale-in {
  animation: scaleIn var(--bf-transition-normal) var(--ease-standard);
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Transition Utilities */
.transition-all {
  transition: all var(--bf-transition-normal) var(--ease-standard);
}

.transition-fast {
  transition: all var(--bf-transition-fast) var(--ease-standard);
}

.transition-colors {
  transition: color var(--bf-transition-fast) var(--ease-standard),
              background-color var(--bf-transition-fast) var(--ease-standard),
              border-color var(--bf-transition-fast) var(--ease-standard);
}

.transition-transform {
  transition: transform var(--bf-transition-normal) var(--ease-standard);
}

.transition-opacity {
  transition: opacity var(--bf-transition-fast) var(--ease-standard);
}

/* Hover Effects */
.hover-lift {
  transition: transform var(--bf-transition-normal) var(--ease-standard),
              box-shadow var(--bf-transition-normal) var(--ease-standard);
}

.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: var(--bf-shadow-lg);
}

.hover-scale {
  transition: transform var(--bf-transition-normal) var(--ease-standard);
}

.hover-scale:hover {
  transform: scale(1.02);
}

.hover-glow {
  transition: box-shadow var(--bf-transition-normal) var(--ease-standard);
}

.hover-glow:hover {
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}