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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

body {
  margin: 0;
  padding: 0;
}

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

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

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

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

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

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

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

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

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

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

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

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

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

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

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

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

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

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

.btn--outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

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

.btn--sm {
  padding: var(--space-4) var(--space-12);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

.btn--lg {
  padding: var(--space-10) var(--space-20);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-md);
}

.btn--full-width {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Form elements */
.form-control {
  display: block;
  width: 100%;
  padding: var(--space-8) var(--space-12);
  font-size: var(--font-size-md);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  transition: border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

textarea.form-control {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
}

select.form-control {
  padding: var(--space-8) var(--space-12);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: var(--select-caret-light);
  background-repeat: no-repeat;
  background-position: right var(--space-12) center;
  background-size: 16px;
  padding-right: var(--space-32);
}

/* Add a dark mode specific caret */
@media (prefers-color-scheme: dark) {
  select.form-control {
    background-image: var(--select-caret-dark);
  }
}

/* Also handle data-color-scheme */
[data-color-scheme="dark"] select.form-control {
  background-image: var(--select-caret-dark);
}

[data-color-scheme="light"] select.form-control {
  background-image: var(--select-caret-light);
}

.form-control:focus {
  border-color: var(--color-primary);
  outline: var(--focus-outline);
}

.form-label {
  display: block;
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.form-group {
  margin-bottom: var(--space-16);
}

/* Card component */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--duration-normal) var(--ease-standard);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card__body {
  padding: var(--space-16);
}

.card__header,
.card__footer {
  padding: var(--space-16);
  border-bottom: 1px solid var(--color-card-border-inner);
}

/* Status indicators - simplified with CSS variables */
.status {
  display: inline-flex;
  align-items: center;
  padding: var(--space-6) var(--space-12);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.status--success {
  background-color: rgba(
    var(--color-success-rgb, 33, 128, 141),
    var(--status-bg-opacity)
  );
  color: var(--color-success);
  border: 1px solid
    rgba(var(--color-success-rgb, 33, 128, 141), var(--status-border-opacity));
}

.status--error {
  background-color: rgba(
    var(--color-error-rgb, 192, 21, 47),
    var(--status-bg-opacity)
  );
  color: var(--color-error);
  border: 1px solid
    rgba(var(--color-error-rgb, 192, 21, 47), var(--status-border-opacity));
}

.status--warning {
  background-color: rgba(
    var(--color-warning-rgb, 168, 75, 47),
    var(--status-bg-opacity)
  );
  color: var(--color-warning);
  border: 1px solid
    rgba(var(--color-warning-rgb, 168, 75, 47), var(--status-border-opacity));
}

.status--info {
  background-color: rgba(
    var(--color-info-rgb, 98, 108, 113),
    var(--status-bg-opacity)
  );
  color: var(--color-info);
  border: 1px solid
    rgba(var(--color-info-rgb, 98, 108, 113), var(--status-border-opacity));
}

/* Container layout */
.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-right: var(--space-16);
  padding-left: var(--space-16);
}

@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
  }
}
@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
  }
}
@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
  }
}
@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

/* Utility classes */
.flex {
  display: flex;
}
.flex-col {
  flex-direction: column;
}
.items-center {
  align-items: center;
}
.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.gap-4 {
  gap: var(--space-4);
}
.gap-8 {
  gap: var(--space-8);
}
.gap-16 {
  gap: var(--space-16);
}

.m-0 {
  margin: 0;
}
.mt-8 {
  margin-top: var(--space-8);
}
.mb-8 {
  margin-bottom: var(--space-8);
}
.mx-8 {
  margin-left: var(--space-8);
  margin-right: var(--space-8);
}
.my-8 {
  margin-top: var(--space-8);
  margin-bottom: var(--space-8);
}

.p-0 {
  padding: 0;
}
.py-8 {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}
.px-8 {
  padding-left: var(--space-8);
  padding-right: var(--space-8);
}
.py-16 {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}
.px-16 {
  padding-left: var(--space-16);
  padding-right: var(--space-16);
}

.block {
  display: block;
}
.hidden {
  display: none;
}

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* Dark mode specifics */
[data-color-scheme="dark"] .btn--outline {
  border: 1px solid var(--color-border-secondary);
}

@font-face {
  font-family: 'FKGroteskNeue';
  src: url('https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2')
    format('woff2');
}

/* END PERPLEXITY DESIGN SYSTEM */
```css
/* ============================================
   GOOGLE DRIVE CLONE - COMPLETE CSS
   Redesigned with Perplexity Design System
   ============================================ */

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

html {
    font-size: var(--font-size-base);
    font-family: var(--font-family-base);
    background-color: var(--color-background);
    color: var(--color-text);
}

body {
    background-color: var(--color-background) !important;
    color: var(--color-text) !important;
    overflow-x: hidden;
}

/* ============ HEADER ============ */
.header {
    height: 64px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    padding: 0 var(--space-24);
    position: sticky;
    top: 0;
    background: var(--color-surface);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    flex: 0 0 auto;
    gap: 0;
}

.header-logo {
    margin-right: var(--space-32);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-logo svg {
    width: 40px;
    height: 40px;
}

.header-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-normal);
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.header-center {
    flex: 1;
    display: flex;
    justify-content: center;
    min-width: 0;
}

.search-box {
    max-width: 720px;
    width: 100%;
    position: relative;
}

.search-input {
    width: 100%;
    height: 48px;
    border: none;
    background: var(--color-secondary);
    border-radius: var(--radius-base);
    padding: 0 48px;
    font-size: var(--font-size-base);
    outline: none;
    transition: all var(--duration-fast) var(--ease-standard);
    color: var(--color-text);
    font-family: var(--font-family-base);
}

.search-input::placeholder {
    color: var(--color-text-secondary);
}

.search-input:focus {
    background: var(--color-surface);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-primary);
}

.search-icon {
    position: absolute;
    left: var(--space-16);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-icon .material-icons {
    font-size: 20px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0;
    flex: 0 0 auto;
}

.header-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: background var(--duration-fast) var(--ease-standard);
    border: none;
    background: transparent;
}

.header-icon:hover {
    background: var(--color-secondary);
}

.header-icon:focus-visible {
    outline: var(--focus-outline);
    outline-offset: var(--space-2);
}

.header-icon .material-icons {
    font-size: 24px;
}

/* ============ SIDEBAR ============ */
.sidebar {
    width: 256px;
    position: fixed;
    left: 0;
    top: 64px;
    bottom: 0;
    padding: var(--space-12) 0;
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    overflow-y: auto;
    z-index: 100;
}

.new-button {
    margin: 0 var(--space-12) var(--space-20);
    padding: var(--space-12) var(--space-24);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: var(--space-12);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-standard);
    box-shadow: var(--shadow-sm);
    font-size: var(--font-size-base);
    color: var(--color-text);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family-base);
}

.new-button:hover {
    background: var(--color-secondary);
    box-shadow: var(--shadow-md);
}

.new-button:focus-visible {
    outline: var(--focus-outline);
    outline-offset: var(--space-2);
}

.new-button .material-icons {
    font-size: 20px;
}

.new-dropdown {
    position: absolute;
    top: 120px;
    left: var(--space-24);
    background: var(--color-surface);
    border-radius: var(--radius-base);
    box-shadow: var(--shadow-lg);
    padding: var(--space-8) 0;
    min-width: 240px;
    display: none;
    z-index: 1000;
    border: 1px solid var(--color-border);
}

.new-dropdown.show {
    display: block;
}

.dropdown-item {
    padding: var(--space-12) var(--space-24);
    display: flex;
    align-items: center;
    gap: var(--space-16);
    cursor: pointer;
    transition: background var(--duration-fast) var(--ease-standard);
    font-size: var(--font-size-base);
    color: var(--color-text);
}

.dropdown-item:hover {
    background: var(--color-secondary);
}

.dropdown-item .material-icons {
    font-size: 18px;
    color: var(--color-text-secondary);
}

.dropdown-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-8) 0;
}

.sidebar-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-item {
    padding: var(--space-12) var(--space-24);
    display: flex;
    align-items: center;
    gap: var(--space-16);
    cursor: pointer;
    transition: background var(--duration-fast) var(--ease-standard);
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    border-radius: 0;
}

.sidebar-item:hover {
    background: var(--color-secondary);
}

.sidebar-item.active {
    background: rgba(var(--color-teal-500-rgb), 0.1);
    color: var(--color-primary);
}

.sidebar-item .material-icons {
    font-size: 20px;
}

.storage-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-20) var(--space-24);
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.storage-text {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
}

.storage-bar {
    width: 100%;
    height: var(--space-4);
    background: var(--color-border);
    border-radius: var(--space-2);
    overflow: hidden;
    margin-bottom: var(--space-8);
}

.storage-used {
    height: 100%;
    background: var(--color-primary);
    transition: width 0.3s var(--ease-standard);
}

/* ============ MAIN CONTENT ============ */
.main-content {
    margin-left: 256px;
    padding: var(--space-24) var(--space-32);
    min-height: calc(100vh - 64px);
    background-color: var(--color-background);
}

.breadcrumbs {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-24);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    cursor: pointer;
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-sm);
    transition: background var(--duration-fast) var(--ease-standard);
}

.breadcrumb-item:hover {
    background: var(--color-secondary);
}

.breadcrumb-arrow {
    font-size: var(--space-16);
    color: var(--color-text-secondary);
    margin: 0 var(--space-4);
}

/* ============ TOOLBAR ============ */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-24);
    padding: var(--space-12) 0;
}

.toolbar-left,
.toolbar-right {
    display: flex;
    gap: var(--space-8);
    align-items: center;
}

.toolbar-button {
    padding: var(--space-8) var(--space-16);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: var(--space-8);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-standard);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family-base);
}

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

.toolbar-button.active {
    background: rgba(var(--color-teal-500-rgb), 0.1);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.toolbar-button:focus-visible {
    outline: var(--focus-outline);
    outline-offset: var(--space-2);
}

.toolbar-button .material-icons {
    font-size: 18px;
}

#selectedCount {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

/* ============ FILE GRID ============ */
.file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-16);
    padding: var(--space-12) 0;
}

.file-grid.list-view {
    display: block !important;
    padding: 0 !important;
}

.file-grid.list-view .file-item {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    padding: var(--space-8) var(--space-16) !important;
    border: none !important;
    border-bottom: 1px solid var(--color-border) !important;
    border-radius: 0 !important;
    height: auto !important;
    min-height: 48px !important;
}

.file-item {
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-base);
    padding: var(--space-16);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-standard);
    background: var(--color-surface);
    position: relative;
    overflow: hidden;
}

.file-item:hover {
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(var(--color-teal-500-rgb), 0.2);
}

.file-item.selected {
    background: rgba(var(--color-teal-500-rgb), 0.1);
    border-color: var(--color-primary);
}

.file-preview {
    width: 100%;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-12);
    position: relative;
    overflow: hidden;
}

.file-grid.list-view .file-preview {
    width: 32px !important;
    height: 32px !important;
    aspect-ratio: auto !important;
    min-width: 32px !important;
    margin-bottom: 0 !important;
    margin-right: var(--space-16) !important;
    flex-shrink: 0 !important;
}

.file-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.folder-icon {
    font-size: 64px !important;
    color: var(--color-text-secondary);
}

.file-grid.list-view .folder-icon {
    font-size: 20px !important;
}

.file-icon-preview {
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-icon-preview .material-icons {
    font-size: 64px;
    color: var(--color-text-secondary);
}

.file-grid.list-view .file-icon-preview .material-icons {
    font-size: 20px !important;
}

.star-button {
    position: absolute;
    top: var(--space-8);
    right: var(--space-8);
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(var(--color-surface), 0.9);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--duration-fast) var(--ease-standard);
}

.file-item:hover .star-button {
    opacity: 1;
}

.star-button:hover {
    background: var(--color-surface);
}

.star-button:focus-visible {
    outline: var(--focus-outline);
    outline-offset: var(--space-1);
}

.star-button .material-icons {
    font-size: 18px;
}

.star-badge {
    position: absolute;
    top: var(--space-8);
    right: var(--space-8);
    color: var(--color-warning);
    font-size: 20px;
}

.file-info {
    text-align: left;
}

.file-grid.list-view .file-info {
    flex: 1 !important;
    display: flex !important;
    align-items: center !important;
    gap: var(--space-24) !important;
}

.file-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    margin-bottom: var(--space-4);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-grid.list-view .file-name {
    margin-bottom: 0 !important;
    flex: 1 !important;
    min-width: 200px !important;
}

.file-details {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.file-grid.list-view .file-details {
    display: flex !important;
    gap: var(--space-16) !important;
    white-space: nowrap !important;
}

/* ============ EMPTY STATE ============ */
.empty-state {
    text-align: center;
    padding: 60px var(--space-20);
    color: var(--color-text-secondary);
}

.empty-state .material-icons {
    font-size: 120px;
    color: var(--color-border);
    margin-bottom: var(--space-24);
}

.empty-state h2 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-normal);
    margin-bottom: var(--space-12);
    color: var(--color-text);
}

.empty-state p {
    font-size: var(--font-size-base);
}

/* ============ MODALS ============ */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--color-surface);
    border-radius: var(--radius-base);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow: auto;
    box-shadow: var(--shadow-lg);
}

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

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: none;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--color-text-secondary);
}

.modal-close:hover {
    background: var(--color-secondary);
}

.modal-close:focus-visible {
    outline: var(--focus-outline);
    outline-offset: var(--space-1);
}

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

.modal-footer {
    padding: var(--space-16) var(--space-24);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-12);
}

.button-primary {
    padding: var(--space-10) var(--space-24);
    background: var(--color-primary);
    color: var(--color-btn-primary-text);
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: background var(--duration-fast) var(--ease-standard);
    font-family: var(--font-family-base);
}

.button-primary:hover {
    background: var(--color-primary-hover);
}

.button-primary:focus-visible {
    outline: var(--focus-outline);
    outline-offset: var(--space-2);
}

.button-primary:disabled {
    background: var(--color-border);
    cursor: not-allowed;
    opacity: 0.5;
}

.button-secondary {
    padding: var(--space-10) var(--space-24);
    background: var(--color-surface);
    color: var(--color-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: background var(--duration-fast) var(--ease-standard);
    font-family: var(--font-family-base);
}

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

.button-secondary:focus-visible {
    outline: var(--focus-outline);
    outline-offset: var(--space-2);
}

.folder-input {
    width: 100%;
    padding: var(--space-12) var(--space-16);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    outline: none;
    transition: border var(--duration-fast) var(--ease-standard);
    font-family: var(--font-family-base);
    background: var(--color-background);
    color: var(--color-text);
}

.folder-input:focus {
    border-color: var(--color-primary);
    box-shadow: var(--focus-ring);
}

/* ============ CONTEXT MENU ============ */
.context-menu {
    position: fixed;
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    padding: var(--space-8) 0;
    min-width: 200px;
    display: none;
    z-index: 3000;
    border: 1px solid var(--color-border);
}

.context-menu.show {
    display: block;
}

.context-menu-item {
    padding: var(--space-12) var(--space-24);
    display: flex;
    align-items: center;
    gap: var(--space-16);
    cursor: pointer;
    transition: background var(--duration-fast) var(--ease-standard);
    font-size: var(--font-size-base);
    color: var(--color-text);
}

.context-menu-item:hover {
    background: var(--color-secondary);
}

.context-menu-item .material-icons {
    font-size: 18px;
}

.context-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-8) 0;
}

/* ============ TOAST ============ */
.toast {
    position: fixed;
    bottom: var(--space-24);
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-charcoal-800);
    color: var(--color-cream-100);
    padding: var(--space-12) var(--space-24);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    z-index: 4000;
    display: none;
    box-shadow: var(--shadow-md);
}

.toast.show {
    display: block;
    animation: slideUp 0.3s var(--ease-standard);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(var(--space-20));
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* ============ DRAG OVERLAY ============ */
.drag-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(var(--color-background), 0.95);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 5000;
}

.drag-overlay.show {
    display: flex;
}

.drag-content {
    text-align: center;
}

.drag-content .material-icons {
    font-size: 120px;
    color: var(--color-primary);
    margin-bottom: var(--space-24);
}

.drag-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-normal);
    color: var(--color-text);
}

/* ============ MOBILE RESPONSIVE ============ */
@media (max-width: 768px) {
    .hamburger-menu {
        display: flex !important;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        margin-right: var(--space-16);
        cursor: pointer;
        background: transparent;
        border: none;
    }
    
    .hamburger-menu .material-icons {
        font-size: 24px;
        color: var(--color-text-secondary);
    }
    
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s var(--ease-standard);
        width: 256px;
        padding-bottom: 120px;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 99;
    }
    
    .sidebar-overlay.open {
        display: block;
    }
    
    .main-content {
        margin-left: 0;
        padding: var(--space-16);
    }
    
    .header-center {
        display: none;
    }
    
    .file-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--space-12);
    }
}

@media (max-width: 480px) {
    .file-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: var(--space-8);
    }
    
    .header {
        padding: 0 var(--space-16);
    }
    
    .header-title {
        font-size: var(--font-size-lg);
    }
    
    .main-content {
        padding: var(--space-12);
    }
    
    .toolbar {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-12);
    }
    
    .toolbar-left,
    .toolbar-right {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--space-16);
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--space-16);
    }
    
    .breadcrumbs {
        font-size: var(--font-size-xs);
    }
    
    .file-item {
        padding: var(--space-12);
    }
    
    .file-name {
        font-size: var(--font-size-sm);
    }
    
    .file-details {
        font-size: var(--font-size-xs);
    }
}