:root {
  /* Primitive Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-gray-400: rgba(119, 124, 124, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-brown-600: rgba(94, 82, 64, 1);
  --color-charcoal-700: rgba(31, 33, 33, 1);
  --color-charcoal-800: rgba(38, 40, 40, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-teal-300: rgba(50, 184, 198, 1);
  --color-teal-400: rgba(45, 166, 178, 1);
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-teal-600: rgba(29, 116, 128, 1);
  --color-teal-700: rgba(26, 104, 115, 1);
  --color-teal-800: rgba(41, 150, 161, 1);
  --color-red-400: rgba(255, 84, 89, 1);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-orange-400: rgba(230, 129, 97, 1);
  --color-orange-500: rgba(168, 75, 47, 1);

  /* RGB versions for opacity control */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  --color-slate-500-rgb: 98, 108, 113;
  --color-red-500-rgb: 192, 21, 47;
  --color-red-400-rgb: 255, 84, 89;
  --color-orange-500-rgb: 168, 75, 47;
  --color-orange-400-rgb: 230, 129, 97;

  /* Background color tokens (Light Mode) */
  --color-bg-1: rgba(59, 130, 246, 0.08); /* Light blue */
  --color-bg-2: rgba(245, 158, 11, 0.08); /* Light yellow */
  --color-bg-3: rgba(34, 197, 94, 0.08); /* Light green */
  --color-bg-4: rgba(239, 68, 68, 0.08); /* Light red */
  --color-bg-5: rgba(147, 51, 234, 0.08); /* Light purple */
  --color-bg-6: rgba(249, 115, 22, 0.08); /* Light orange */
  --color-bg-7: rgba(236, 72, 153, 0.08); /* Light pink */
  --color-bg-8: rgba(6, 182, 212, 0.08); /* Light cyan */

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-teal-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
  --color-select-caret: rgba(var(--color-slate-900-rgb), 0.8);

  /* Common style patterns */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for opacity control */
  --color-success-rgb: 33, 128, 141;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 168, 75, 47;
  --color-info-rgb: 98, 108, 113;

  /* Typography */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo,
    Monaco, Consolas, monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;

  /* Spacing */
  --space-0: 0;
  --space-1: 1px;
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04),
    0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04),
    0 4px 6px -2px rgba(0, 0, 0, 0.02);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.15),
    inset 0 -1px 0 rgba(0, 0, 0, 0.03);

  /* Animation */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

  /* Sticky layout */
  --sticky-toolbar-height: 72px;
  --sticky-nav-height: 60px;
  --sticky-stack-gap: 0px;

  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
  :root {
    /* RGB versions for opacity control (Dark Mode) */
    --color-gray-400-rgb: 119, 124, 124;
    --color-teal-300-rgb: 50, 184, 198;
    --color-gray-300-rgb: 167, 169, 169;
    --color-gray-200-rgb: 245, 245, 245;

    /* Background color tokens (Dark Mode) */
    --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
    --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
    --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
    --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
    --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
    --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
    --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
    --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */

    /* Semantic Color Tokens (Dark Mode) */
    --color-background: var(--color-charcoal-700);
    --color-surface: var(--color-charcoal-800);
    --color-text: var(--color-gray-200);
    --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
    --color-primary: var(--color-teal-300);
    --color-primary-hover: var(--color-teal-400);
    --color-primary-active: var(--color-teal-800);
    --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
    --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
    --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
    --color-border: rgba(var(--color-gray-400-rgb), 0.3);
    --color-error: var(--color-red-400);
    --color-success: var(--color-teal-300);
    --color-warning: var(--color-orange-400);
    --color-info: var(--color-gray-300);
    --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
    --color-btn-primary-text: var(--color-slate-900);
    --color-card-border: rgba(var(--color-gray-400-rgb), 0.2);
    --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
    --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
      inset 0 -1px 0 rgba(0, 0, 0, 0.15);
    --button-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
    --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
    --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

    /* Common style patterns - updated for dark mode */
    --focus-ring: 0 0 0 3px var(--color-focus-ring);
    --focus-outline: 2px solid var(--color-primary);
    --status-bg-opacity: 0.15;
    --status-border-opacity: 0.25;
    --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

    /* RGB versions for dark mode */
    --color-success-rgb: var(--color-teal-300-rgb);
    --color-error-rgb: var(--color-red-400-rgb);
    --color-warning-rgb: var(--color-orange-400-rgb);
    --color-info-rgb: var(--color-gray-300-rgb);
  }
}

/* Data attribute for manual theme switching */
[data-color-scheme="dark"] {
  /* RGB versions for opacity control (dark mode) */
  --color-gray-400-rgb: 119, 124, 124;
  --color-teal-300-rgb: 50, 184, 198;
  --color-gray-300-rgb: 167, 169, 169;
  --color-gray-200-rgb: 245, 245, 245;

  /* Colorful background palette - Dark Mode */
  --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
  --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
  --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
  --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
  --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
  --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
  --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
  --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */

  /* Semantic Color Tokens (Dark Mode) */
  --color-background: var(--color-charcoal-700);
  --color-surface: var(--color-charcoal-800);
  --color-text: var(--color-gray-200);
  --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
  --color-primary: var(--color-teal-300);
  --color-primary-hover: var(--color-teal-400);
  --color-primary-active: var(--color-teal-800);
  --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
  --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
  --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
  --color-border: rgba(var(--color-gray-400-rgb), 0.3);
  --color-error: var(--color-red-400);
  --color-success: var(--color-teal-300);
  --color-warning: var(--color-orange-400);
  --color-info: var(--color-gray-300);
  --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
  --color-btn-primary-text: var(--color-slate-900);
  --color-card-border: rgba(var(--color-gray-400-rgb), 0.15);
  --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.15);
  --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
  --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

  /* Common style patterns - updated for dark mode */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for dark mode */
  --color-success-rgb: var(--color-teal-300-rgb);
  --color-error-rgb: var(--color-red-400-rgb);
  --color-warning-rgb: var(--color-orange-400-rgb);
  --color-info-rgb: var(--color-gray-300-rgb);
}

[data-color-scheme="light"] {
  /* RGB versions for opacity control (light mode) */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-teal-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);

  /* RGB versions for light mode */
  --color-success-rgb: var(--color-teal-500-rgb);
  --color-error-rgb: var(--color-red-500-rgb);
  --color-warning-rgb: var(--color-orange-500-rgb);
  --color-info-rgb: var(--color-slate-500-rgb);
}

/* Base styles */
html {
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
}

h1 {
  font-size: var(--font-size-4xl);
}
h2 {
  font-size: var(--font-size-3xl);
}
h3 {
  font-size: var(--font-size-2xl);
}
h4 {
  font-size: var(--font-size-xl);
}
h5 {
  font-size: var(--font-size-lg);
}
h6 {
  font-size: var(--font-size-md);
}

p {
  margin: 0 0 var(--space-16) 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-standard);
}

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

code,
pre {
  font-family: var(--font-family-mono);
  font-size: calc(var(--font-size-base) * 0.95);
  background-color: var(--color-secondary);
  border-radius: var(--radius-sm);
}

code {
  padding: var(--space-1) var(--space-4);
}

pre {
  padding: var(--space-16);
  margin: var(--space-16) 0;
  overflow: auto;
  border: 1px solid var(--color-border);
}

pre code {
  background: none;
  padding: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  border: none;
  text-decoration: none;
  position: relative;
}

.btn-icon {
  display: inline-flex;
  margin-right: var(--space-8);
}

.btn-icon svg {
  width: 16px;
  height: 16px;
}

.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 */
:root {
  /* LiveBetter Color Scheme - Green to Red Gradient */
  --primary-gradient: linear-gradient(135deg, #7BA05B 0%, #B85F40 50%, #C94B4B 100%);
  --primary: #7BA05B;
  --primary-dark: #B85F40;
  --primary-red: #C94B4B;
  --secondary: #4CAF50;
  --accent: #FF9800;
  --background: #f5f5f5;
  --text: #333;
  --white: #ffffff;
  --purple: #9C27B0;
  --light-gray: #e0e0e0;
  --border: #ddd;
  
  /* Dark mode colors (when toggled) */
  --dark-bg: #1a1a1a;
  --dark-surface: #2d2d2d;
  --dark-text: #e0e0e0;
  --dark-border: #404040;
  
  /* Current theme colors (light by default) */
  --current-bg: var(--background);
  --current-surface: var(--white);
  --current-text: var(--text);
  --current-border: var(--border);
  --current-light-bg: var(--light-gray);

  /* Original Primitive Color Tokens (kept for compatibility) */
  /* Primitive Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-gray-400: rgba(119, 124, 124, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-brown-600: rgba(94, 82, 64, 1);
  --color-charcoal-700: rgba(31, 33, 33, 1);
  --color-charcoal-800: rgba(38, 40, 40, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-teal-300: rgba(50, 184, 198, 1);
  --color-teal-400: rgba(45, 166, 178, 1);
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-teal-600: rgba(29, 116, 128, 1);
  --color-teal-700: rgba(26, 104, 115, 1);
  --color-teal-800: rgba(41, 150, 161, 1);
  --color-red-400: rgba(255, 84, 89, 1);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-orange-400: rgba(230, 129, 97, 1);
  --color-orange-500: rgba(168, 75, 47, 1);

  /* RGB versions for opacity control */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  --color-slate-500-rgb: 98, 108, 113;
  --color-red-500-rgb: 192, 21, 47;
  --color-red-400-rgb: 255, 84, 89;
  --color-orange-500-rgb: 168, 75, 47;
  --color-orange-400-rgb: 230, 129, 97;

  /* Background color tokens (Light Mode) */
  --color-bg-1: rgba(59, 130, 246, 0.08);
  --color-bg-2: rgba(245, 158, 11, 0.08);
  --color-bg-3: rgba(34, 197, 94, 0.08);
  --color-bg-4: rgba(239, 68, 68, 0.08);
  --color-bg-5: rgba(147, 51, 234, 0.08);
  --color-bg-6: rgba(249, 115, 22, 0.08);
  --color-bg-7: rgba(236, 72, 153, 0.08);
  --color-bg-8: rgba(6, 182, 212, 0.08);

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: #1a1a1a;
  --color-text-secondary: #333333;
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-teal-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
  --color-select-caret: rgba(var(--color-slate-900-rgb), 0.8);

  /* Common style patterns */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;

  /* 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 theme applied via data attribute */
[data-theme="dark"] {
  --current-bg: var(--dark-bg);
  --current-surface: var(--dark-surface);
  --current-text: var(--dark-text);
  --current-border: var(--dark-border);
  --current-light-bg: #3a3a3a;
}

/* Prevent auto dark mode - we control it manually */
@media (prefers-color-scheme: dark) {
  :root {
    --color-gray-400-rgb: 119, 124, 124;
    --color-teal-300-rgb: 50, 184, 198;
    --color-gray-300-rgb: 167, 169, 169;
    --color-gray-200-rgb: 245, 245, 245;

    --color-bg-1: rgba(29, 78, 216, 0.15);
    --color-bg-2: rgba(180, 83, 9, 0.15);
    --color-bg-3: rgba(21, 128, 61, 0.15);
    --color-bg-4: rgba(185, 28, 28, 0.15);
    --color-bg-5: rgba(107, 33, 168, 0.15);
    --color-bg-6: rgba(194, 65, 12, 0.15);
    --color-bg-7: rgba(190, 24, 93, 0.15);
    --color-bg-8: rgba(8, 145, 178, 0.15);

    --color-background: var(--color-charcoal-700);
    --color-surface: var(--color-charcoal-800);
    --color-text: var(--color-gray-200);
    --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
    --color-primary: var(--color-teal-300);
    --color-primary-hover: var(--color-teal-400);
    --color-primary-active: var(--color-teal-800);
    --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
    --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
    --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
    --color-border: rgba(var(--color-gray-400-rgb), 0.3);
    --color-error: var(--color-red-400);
    --color-success: var(--color-teal-300);
    --color-warning: var(--color-orange-400);
    --color-info: var(--color-gray-300);
    --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
    --color-btn-primary-text: var(--color-slate-900);
    --color-card-border: rgba(var(--color-gray-400-rgb), 0.2);
    --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
    --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
      inset 0 -1px 0 rgba(0, 0, 0, 0.15);
  }
}

[data-color-scheme="dark"] {
  --color-gray-400-rgb: 119, 124, 124;
  --color-teal-300-rgb: 50, 184, 198;
  --color-gray-300-rgb: 167, 169, 169;
  --color-gray-200-rgb: 245, 245, 245;

  --color-bg-1: rgba(29, 78, 216, 0.15);
  --color-bg-2: rgba(180, 83, 9, 0.15);
  --color-bg-3: rgba(21, 128, 61, 0.15);
  --color-bg-4: rgba(185, 28, 28, 0.15);
  --color-bg-5: rgba(107, 33, 168, 0.15);
  --color-bg-6: rgba(194, 65, 12, 0.15);
  --color-bg-7: rgba(190, 24, 93, 0.15);
  --color-bg-8: rgba(8, 145, 178, 0.15);

  --color-background: var(--color-charcoal-700);
  --color-surface: var(--color-charcoal-800);
  --color-text: var(--color-gray-200);
  --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
  --color-primary: var(--color-teal-300);
  --color-primary-hover: var(--color-teal-400);
  --color-primary-active: var(--color-teal-800);
  --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
  --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
  --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
  --color-border: rgba(var(--color-gray-400-rgb), 0.3);
  --color-error: var(--color-red-400);
  --color-success: var(--color-teal-300);
  --color-warning: var(--color-orange-400);
  --color-info: var(--color-gray-300);
  --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
  --color-btn-primary-text: var(--color-slate-900);
  --color-card-border: rgba(var(--color-gray-400-rgb), 0.15);
  --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.15);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-family: var(--font-family-base);
  scroll-behavior: smooth;
}

body {
  font-family: inherit;
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--current-text);
  background-color: var(--current-bg);
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
li,
button,
input,
textarea {
  font-family: inherit;
}

.container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-24);
}

/* Top Toolbar */
.top-toolbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
  padding: var(--space-12) var(--space-24);
  background: linear-gradient(135deg, rgba(123, 160, 91, 0.15), rgba(201, 75, 75, 0.12));
  border-bottom: 1px solid var(--current-border);
  backdrop-filter: blur(10px);
}

.toolbar-left,
.toolbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.file-chip {
  padding: 6px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--current-border);
  background: var(--current-surface);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  font-family: var(--font-family-mono);
  max-width: 340px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Load TTL Button */
.load-ttl-button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  padding: 8px 14px;
  background: rgba(123, 160, 91, 0.22);
  color: var(--current-text);
  border: 1px solid var(--current-border);
  border-radius: var(--radius-base);
  cursor: pointer;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}

.load-ttl-button svg {
  width: 16px;
  height: 16px;
}

.load-ttl-button:hover {
  background: rgba(123, 160, 91, 0.35);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.load-ttl-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Theme Toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #7BA05B, #C94B4B);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  transform: scale(1.06);
  filter: brightness(1.05);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.sun-icon,
.moon-icon {
  position: absolute;
  transition: opacity 0.3s ease, transform 0.3s ease;
  color: var(--white);
}

.sun-icon {
  opacity: 1;
}

.moon-icon {
  opacity: 0;
}

[data-theme="dark"] .sun-icon {
  opacity: 0;
  transform: rotate(180deg);
}

[data-theme="dark"] .moon-icon {
  opacity: 1;
  transform: rotate(0deg);
}

[data-theme="dark"] .theme-toggle {
  background: linear-gradient(135deg, #7BA05B, #C94B4B);
  border-color: rgba(255, 255, 255, 0.4);
}

/* Header */
.header {
  background: linear-gradient(135deg, #7BA05B 0%, #B85F40 50%, #C94B4B 100%);
  background-size: 200% 200%;
  animation: headerGradientShift 18s var(--ease-standard) infinite;
  border-bottom: none;
  padding: clamp(20px, 4.5vw, 48px) 0;
  margin-bottom: var(--space-24);
  box-shadow: 0 8px 22px rgba(0,0,0,0.10);
  position: relative;
  overflow: hidden;
}

.header::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 140%;
  background: radial-gradient(1200px 400px at 20% 0%, rgba(255,255,255,0.18) 0%, rgba(255,255,255,0) 55%)
              ,radial-gradient(900px 300px at 85% 15%, rgba(255,255,255,0.10) 0%, rgba(255,255,255,0) 60%);
  filter: blur(2px) saturate(120%);
  pointer-events: none;
  animation: headerGlowFloat 14s ease-in-out infinite alternate;
}

.header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
  max-width: min(880px, 92%);
  margin: 0 auto;
  padding: clamp(10px, 2.5vw, 20px) clamp(12px, 3vw, 24px);
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 14px;
  box-shadow: 0 8px 22px rgba(0,0,0,0.10), var(--shadow-inset-sm);
  backdrop-filter: blur(7px) saturate(118%);
}

.logo {
  display: inline-block;
  width: clamp(96px, 14vw, 150px);
  height: auto;
  padding: 0;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  filter: drop-shadow(0 4px 10px rgba(0,0,0,0.18));
  transition: transform var(--duration-normal) var(--ease-standard), filter var(--duration-normal) var(--ease-standard);
}

.logo:hover { transform: translateY(-2px) scale(1.02); filter: drop-shadow(0 8px 16px rgba(0,0,0,0.24)); }

.toolbar-logo {
  width: auto;
  height: 48px;
  padding: 0;
  border-radius: 0;
  box-shadow: none;
}


.header h1 {
  font-size: clamp(var(--font-size-3xl), 3.4vw, var(--font-size-4xl));
  font-weight: 700;
  line-height: 1.08;
  background: linear-gradient(90deg, #ffffff 0%, #ffe8d6 40%, #ffffff 80%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 1px 0 rgba(255,255,255,0.22);
  margin-bottom: var(--space-6);
}

.header .version {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: rgba(255,255,255,0.95);
  margin-bottom: var(--space-4);
}

.header .version::after {
  content: "v1.2";
  font-size: var(--font-size-xs);
  letter-spacing: 0.04em;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid transparent;
  background:
    linear-gradient(rgba(255,255,255,0.08), rgba(255,255,255,0.08)) padding-box,
    linear-gradient(90deg, #7BA05B, #B85F40, #C94B4B) border-box;
  box-shadow: 0 5px 14px rgba(0,0,0,0.16);
}

.header .date {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: var(--space-12);
}

.header .description {
  font-size: var(--font-size-base);
  color: var(--white);
  max-width: 760px;
  margin: 0 auto;
  opacity: 0.95;
}

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

@keyframes headerGlowFloat {
  0% { transform: translate3d(0,0,0) rotate(0.001deg); opacity: 0.9; }
  100% { transform: translate3d(0,-10px,0) rotate(0.001deg); opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .header { animation: none; }
  .header::before { animation: none; }
  .logo { transition: none; }
}

/* Navigation */
.nav {
  background: transparent;
  border-bottom: none;
  position: sticky;
  top: calc(var(--sticky-toolbar-height) + var(--sticky-stack-gap));
  z-index: 900;
  box-shadow: none;
  transition: background 0.3s ease, border-color 0.3s ease;
  display: flex;
  justify-content: center;
  padding: 0 var(--space-24);
}

.nav .container {
  width: 100%;
  max-width: var(--container-xl);
  background: var(--current-surface);
  border: 1px solid var(--current-border);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  border-radius: 12px;
}

.nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  overflow-x: auto;
  padding: var(--space-12) 0;
  margin: 0 auto;
  width: 100%;
}

.nav-link {
  display: block;
  padding: var(--space-10) var(--space-16);
  color: var(--current-text);
  opacity: 0.7;
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-base);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover {
  color: #7BA05B;
  opacity: 1;
  background: rgba(123, 160, 91, 0.1);
}

.nav-link.active {
  background: linear-gradient(135deg, #7BA05B, #C94B4B);
  color: white;
  opacity: 1;
  font-weight: var(--font-weight-semibold);
}

/* Main Content */
.main {
  padding: var(--space-32) 0;
  min-height: 70vh;
}

.section {
  display: none;
  opacity: 0;
  scroll-margin-top: calc(var(--sticky-toolbar-height) + var(--sticky-nav-height) + var(--space-16));
  transition: opacity var(--duration-normal) var(--ease-standard);
}

.section.active {
  display: block;
  opacity: 1;
}

.section h2 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--current-text);
  margin-bottom: var(--space-16);
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-24);
}

/* Light theme text improvements */
:root,
[data-theme="light"] {
  --text-primary: #1a1a1a;
  --text-secondary: #333333;
  --text-tertiary: #555555;
  --text-muted: #777777;
}

:root h1,
[data-theme="light"] {
  color:#e0e0e0;
}

:root h2, :root h3, :root h4,
[data-theme="light"] h2,
[data-theme="light"] h3,
[data-theme="light"] h4 {
  color: #333333;
}

:root p, :root .intro-section p, :root .intro-section li,
[data-theme="light"] p,
[data-theme="light"] .intro-section p,
[data-theme="light"] .intro-section li {
  color: #333333;
}

:root .section-description, :root .item-description, :root .detail-value,
[data-theme="light"] .section-description,
[data-theme="light"] .item-description,
[data-theme="light"] .detail-value {
  color: #555555;
}

:root .namespace-uri, :root .stat-label,
[data-theme="light"] .namespace-uri,
[data-theme="light"] .stat-label {
  color: #666666;
}

:root code,
[data-theme="light"] code {
  color: #1a1a1a;
}

:root .item-title,
[data-theme="light"] .item-title {
  color: #1a1a1a;
}

:root .detail-label,
[data-theme="light"] .detail-label {
  color: #1a1a1a;
}

/* Dark theme text - use gray tones, not white */
[data-theme="dark"] {
  --text-primary: #e0e0e0;
  --text-secondary: #b0b0b0;
  --text-tertiary: #909090;
  --text-muted: #707070;
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4 {
  color: #e0e0e0;
}

[data-theme="dark"] p,
[data-theme="dark"] .intro-section p,
[data-theme="dark"] .intro-section li {
  color: #b0b0b0;
}

[data-theme="dark"] .section-description,
[data-theme="dark"] .item-description,
[data-theme="dark"] .detail-value {
  color: #909090;
}

[data-theme="dark"] .namespace-uri,
[data-theme="dark"] .stat-label {
  color: #707070;
}

[data-theme="dark"] code {
  color: #e0e0e0;
}

[data-theme="dark"] .item-title {
  color: #e0e0e0;
}

[data-theme="dark"] .detail-label {
  color: #e0e0e0;
}

[data-theme="dark"] .expand-icon {
  color: #909090;
}

/* Statistics Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-20);
  margin-bottom: var(--space-32);
}

.stat-card {
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  text-align: center;
  border: none;
  background: linear-gradient(135deg, #7BA05B 0%, #B85F40 50%, #C94B4B 100%) !important;
  color: white !important;
  box-shadow: 0 2px 8px rgba(123, 160, 91, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(123, 160, 91, 0.4);
}

.stat-card * {
  color: white !important;
}

.stat-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-12);
  color: white !important;
}

.stat-icon svg {
  width: 32px;
  height: 32px;
  display: inline-block;
}

.stat-value {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: white !important;
  margin-bottom: var(--space-8);
}

.stat-label {
  font-size: var(--font-size-base);
  color: white !important;
  opacity: 0.95;
  font-weight: var(--font-weight-medium);
}

/* Intro Section */
.intro-section {
  background: var(--current-surface);
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  border: 1px solid var(--current-border);
  margin-bottom: var(--space-24);
  transition: background 0.3s ease, border-color 0.3s ease;
}

.intro-section h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-16);
}

.intro-section h4 {
  font-size: var(--font-size-lg);
  margin-top: var(--space-20);
  margin-bottom: var(--space-12);
}

.intro-section p {
  margin-bottom: var(--space-16);
  line-height: 1.6;
}

.intro-section ul {
  margin-left: var(--space-24);
  margin-bottom: var(--space-16);
}

.intro-section li {
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

/* Actions */
.actions {
  display: flex;
  gap: var(--space-12);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-12) var(--space-20);
  border-radius: var(--radius-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  border: none;
  transition: all var(--duration-normal) var(--ease-standard);
  text-decoration: none;
}

.btn--primary {
  background: linear-gradient(135deg, #7BA05B 0%, #B85F40 50%, #C94B4B 100%);
  color: white;
  border: none;
}

.btn--primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(123, 160, 91, 0.3);
}

.btn--secondary {
  background: var(--current-light-bg);
  color: var(--current-text);
  border: 1px solid var(--current-border);
}

.btn--secondary:hover {
  background: linear-gradient(135deg, #7BA05B, #C94B4B);
  color: white;
  border-color: #7BA05B;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(123, 160, 91, 0.2);
}

/* Search Box */
.search-box {
  margin-bottom: var(--space-24);
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.form-control {
  flex: 1 1 auto;
  padding: var(--space-12) var(--space-16);
  font-size: var(--font-size-base);
  border: 1px solid var(--current-border);
  border-radius: var(--radius-base);
  background: var(--current-surface);
  color: var(--current-text);
  transition: border-color 0.3s ease, background 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: #7BA05B;
  box-shadow: 0 0 0 3px rgba(123, 160, 91, 0.2);
}

.search-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  background: var(--current-light-bg);
  border: 1px solid var(--current-border);
  border-radius: var(--radius-full);
  padding: 6px 10px;
  white-space: nowrap;
}

/* Category Tabs */
.category-tabs {
  display: flex;
  gap: var(--space-8);
  margin-bottom: var(--space-24);
  flex-wrap: wrap;
}

.tab-btn {
  padding: var(--space-8) var(--space-16);
  background: var(--current-light-bg);
  color: var(--current-text);
  border: 1px solid var(--current-border);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all 0.3s ease;
}

.tab-btn:hover {
  background: rgba(123, 160, 91, 0.1);
  border-color: #7BA05B;
}

.tab-btn.active {
  background: linear-gradient(135deg, #7BA05B, #C94B4B);
  color: white;
  border-color: transparent;
}

/* Items Container */
.items-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.item-card {
  background: var(--current-surface);
  border-left: 4px solid #7BA05B;
  border-top: 1px solid var(--current-border);
  border-right: 1px solid var(--current-border);
  border-bottom: 1px solid var(--current-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
}

.item-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  transform: translateX(2px);
}

.item-card--object-property {
  border-left-color: var(--secondary);
}

.item-card--datatype-property {
  border-left-color: var(--accent);
}

.item-header {
  padding: var(--space-16);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--duration-fast) var(--ease-standard);
}

.item-header:hover {
  background: rgba(123, 160, 91, 0.05);
}

.item-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--current-text);
  margin: 0;
}

.item-type {
  display: inline-block;
  padding: var(--space-4) var(--space-10);
  background: rgba(123, 160, 91, 0.1);
  color: #7BA05B;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  margin-left: var(--space-12);
}

.item-type.object-property {
  background: rgba(76, 175, 80, 0.1);
  color: var(--secondary);
}

.item-type.datatype-property {
  background: rgba(255, 152, 0, 0.1);
  color: var(--accent);
}

.expand-icon {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  transition: transform var(--duration-fast) var(--ease-standard);
  transform: rotate(180deg); /* Rotated by default (expanded) */
}

.item-card:not(.expanded) .expand-icon {
  transform: rotate(0deg); /* Not rotated when collapsed */
}

.item-body {
  max-height: 1000px; /* Expanded by default */
  overflow: hidden;
  transition: max-height var(--duration-normal) var(--ease-standard);
}

.item-card:not(.expanded) .item-body {
  max-height: 0; /* Collapsed when not expanded */
}

.item-content {
  padding: 0 var(--space-16) var(--space-16) var(--space-16);
  border-top: 1px solid var(--current-border);
}

.item-description {
  margin-top: var(--space-12);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.item-details {
  margin-top: var(--space-12);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.detail-row {
  display: flex;
  gap: var(--space-8);
  font-size: var(--font-size-sm);
}

.detail-label {
  font-weight: var(--font-weight-semibold);
  color: var(--current-text);
  min-width: 80px;
}

.detail-value {
  color: var(--color-text-secondary);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
}

/* Namespaces Table */
.namespaces-table {
  border: 1px solid var(--current-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--current-surface);
}

mark.search-highlight {
  background: rgba(123, 160, 91, 0.25);
  color: inherit;
  padding: 0 2px;
  border-radius: 4px;
}

.namespace-row {
  display: grid;
  grid-template-columns: 140px 1fr 110px;
  gap: var(--space-12);
  align-items: center;
  padding: var(--space-12) var(--space-16);
  border-bottom: 1px solid var(--current-border);
}

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

.namespace-row:hover {
  background: var(--current-light-bg);
}

.namespace-head {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  background: rgba(123, 160, 91, 0.08);
}

.namespace-prefix {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: #7BA05B;
  font-family: var(--font-family-mono);
}

.namespace-uri {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-family: var(--font-family-mono);
  word-break: break-all;
}

.copy-btn {
  padding: var(--space-6) var(--space-12);
  background: var(--current-light-bg);
  border: 1px solid var(--current-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: all 0.3s ease;
  color: var(--current-text);
}

.copy-btn:hover {
  background: linear-gradient(135deg, #7BA05B, #C94B4B);
  color: white;
  border-color: transparent;
}

.copy-btn.copied {
  background: var(--secondary);
  color: var(--white);
  border-color: var(--secondary);
}

/* Usage Examples */
.usage-examples {
  display: flex;
  flex-direction: column;
  gap: var(--space-20);
}

.card {
  background: var(--current-surface);
  border: 1px solid var(--current-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.card__body {
  padding: var(--space-20);
}

.card__body ul,
.card__body ol {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--current-text);
  margin-left: var(--space-24);
  margin-bottom: var(--space-16);
}

.card__body li {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  margin-bottom: var(--space-8);
  color: var(--current-text);
}

/* Ensure pre/code inside cards does NOT bleed mono font into siblings */
.card__body pre,
.card__body code {
  font-family: var(--font-family-mono);
}

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

.best-practices {
  border-left: none;
  background: var(--current-surface);
}

.best-practices-list {
  list-style: disc;
  display: block;
  padding-left: var(--space-24);
  margin: 0;
}

.best-practices-list li {
  position: static;
  padding: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  font-size: var(--font-size-sm);
  line-height: 1.4;
}

.best-practices-list li::before {
  content: none;
}

pre {
  background: var(--current-light-bg);
  border: 1px solid var(--current-border);
  border-radius: var(--radius-base);
  padding: var(--space-16);
  overflow-x: auto;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  transition: background 0.3s ease, border-color 0.3s ease;
}

code {
  color: var(--current-text);
}

/* Footer */
.footer {
  background: var(--current-surface);
  border-top: 1px solid var(--current-border);
  padding: var(--space-24) 0;
  margin-top: var(--space-32);
  text-align: center;
  color: var(--current-text);
  font-size: var(--font-size-sm);
  opacity: 1;
  transition: background 0.3s ease, border-color 0.3s ease;
}

/* Responsive */
@media (max-width: 768px) {
  .top-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-10);
  }

  .toolbar-left,
  .toolbar-right {
    justify-content: space-between;
  }

  .toolbar-logo {
    height: 42px;
  }

  .file-chip {
    max-width: 100%;
  }

  .header h1 {
    font-size: var(--font-size-3xl);
  }

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

  .nav-list {
    gap: var(--space-4);
  }

  .nav-link {
    padding: var(--space-8) var(--space-12);
    font-size: var(--font-size-sm);
  }

  .nav {
    position: static;
  }

  .section {
    scroll-margin-top: calc(var(--sticky-toolbar-height) + var(--space-16));
  }

  .search-box {
    flex-direction: column;
    align-items: stretch;
  }

  .namespace-row {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .best-practices-list {
    grid-template-columns: 1fr;
  }
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.loading-spinner {
  text-align: center;
  color: var(--white);
}

.spinner {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top-color: #7BA05B;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading-spinner p {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
}

/* Notification */
.notification {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 10000;
  padding: 16px 24px;
  background: var(--secondary);
  color: var(--white);
  border-radius: var(--radius-base);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  font-weight: var(--font-weight-medium);
  animation: slideIn 0.3s ease;
}

.notification.success {
  background: var(--secondary);
}

.notification.error {
  background: #d32f2f;
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Visualization Styles */
#viz-graph {
  position: relative;
  width: 100%;
  height: 600px;
  min-height: 600px;
  border: 1px solid var(--current-border, #ddd);
  border-radius: 8px;
  background: var(--current-surface, #fff);
  margin-bottom: 16px;
  overflow: hidden;
}

#viz-graph svg {
  display: block;
  width: 100%;
  height: 100%;
}

/* Cytoscape container (shares same slot) */
#cy-container {
  width: 100%;
  height: 600px;
  min-height: 600px;
  border: 1px solid var(--current-border, #ddd);
  border-radius: 8px;
  background: var(--current-surface, #fff);
  margin-bottom: 16px;
  position: relative;
  display: block;
}

.viz-controls {
  display: flex !important;
  gap: 16px;
  padding: 14px 16px;
  background: var(--current-surface, #fff);
  border: 1px solid var(--current-border, #ddd);
  border-radius: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
  align-items: center;
}

.control-group {
  display: flex !important;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.control-group.hidden {
  display: none !important;
}

.control-group label {
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: var(--current-text, #333);
  white-space: nowrap;
}

.control-group input[type="checkbox"] {
  margin-right: 4px;
  cursor: pointer;
}

/* Viz tooltip */
.viz-tooltip {
  position: fixed;
  background: rgba(0, 0, 0, 0.9);
  color: #fff;
  padding: 10px 14px;
  border-radius: 6px;
  font-size: var(--font-size-sm);
  max-width: 300px;
  pointer-events: none;
  z-index: 10000;
  display: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  line-height: 1.4;
}

.viz-tooltip strong {
  display: block;
  margin-bottom: 4px;
  color: var(--primary, #7BA05B);
  font-size: var(--font-size-base);
}

/* Utility Classes */
.hidden {
  display: none !important;
}

/* Smooth transitions */
* {
  transition-property: background-color, border-color, color;
  transition-duration: var(--duration-normal);
  transition-timing-function: var(--ease-standard);
}