: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);
}

/* removed unused .btn--* variants */

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

/* removed unused form-control styles */

.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);
}

/* removed unused card component styles */

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

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

/* removed unused status badges */

/* 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);
  }
}

/* removed unused generic utility classes */

.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 */
/* removed unused dark-mode outline variant */

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

/* END PERPLEXITY DESIGN SYSTEM */
: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);

  --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;

  --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);

  --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);

  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --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;

  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;

  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  --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);

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

@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);
  }
}

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

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

body {
  font-family: var(--font-family-base);
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: var(--line-height-normal);
  font-size: var(--font-size-base);
  -webkit-font-smoothing: antialiased;
}

.container {
  min-height: 100vh;
  padding: var(--space-16);
}

.header {
  margin-bottom: var(--space-16);
  position: relative;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center; /* center vertically so everything is same line */
  gap: var(--space-12);
}

.header-content > div:first-child {
  flex: 1;
  text-align: left;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.header h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-4);
  letter-spacing: var(--letter-spacing-tight);
}

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

.image-dimensions {
  margin-top: var(--space-8);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.btn-upload {
  padding: var(--space-8) var(--space-12);
  min-width: auto;
  width: auto;
}

.btn-icon {
  padding: var(--space-6) var(--space-8);
  min-width: auto;
  width: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon svg {
  display: block;
}

.file-input {
  display: none;
}

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

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

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

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-secondary-hover);
}

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

.btn-success:hover:not(:disabled) {
  opacity: 0.9;
}

.btn-danger {
  background-color: var(--color-error);
  color: var(--color-white);
}

.btn-danger:hover:not(:disabled) {
  opacity: 0.9;
}

.btn-sm {
  padding: var(--space-8) var(--space-16);
  font-size: var(--font-size-sm);
}

.file-name {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.image-dimensions {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-top: var(--space-8);
}

.main-content {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-16);
}

@media (max-width: 1200px) {
  .main-content {
    grid-template-columns: 1fr;
  }
}

.canvas-section {
  display: flex;
  flex-direction: column;
  min-width: 0;
  width: 100%;
}

.canvas-controls {
  background-color: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-12);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-16);
}

.mode-selector {
  margin-bottom: var(--space-12);
}

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

.radio-group {
  display: flex;
  gap: var(--space-16);
}

.radio-label {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  cursor: pointer;
  position: relative;
}

.radio-label input[type="radio"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.radio-custom {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: 50%;
  position: relative;
  transition: all var(--duration-fast) var(--ease-standard);
}

.radio-label input[type="radio"]:checked ~ .radio-custom {
  border-color: var(--color-primary);
}

.radio-label input[type="radio"]:checked ~ .radio-custom::after {
  content: '';
  position: absolute;
  width: 10px;
  height: 10px;
  background-color: var(--color-primary);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.radio-text {
  font-size: var(--font-size-base);
  color: var(--color-text);
}

.action-buttons {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.csv-buttons {
  display: flex;
  gap: var(--space-8);
  align-items: center;
}

.canvas-container {
  background-color: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-16);
  box-shadow: var(--shadow-md);
  position: relative;
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  width: 100%;
  height: calc(100vh - 200px);
}

.canvas-wrapper {
  overflow: hidden;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  background-color: var(--color-white);
  position: relative;
}

/* Upload overlay button inside canvas-wrapper */
.canvas-wrapper {
  position: relative;
}

/* Hidden native file input */
.canvas-wrapper .file-input {
  display: none;
}

/* Upload overlay: small button inside canvas */
.upload-overlay {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 20;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-card-border-inner);
  color: var(--color-text);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-fast) var(--ease-standard), background-color var(--duration-fast);
}
.upload-overlay:hover {
  transform: translateY(-2px);
  background-color: var(--color-secondary-hover);
}

/* Make the upload button more visible when there's no image */
/* Keep upload overlay visible in both states without empty ruleset */
/* (No explicit styles needed here; visibility is controlled elsewhere.) */

/* No-image state: center a larger upload CTA (when no image message visible) */
.no-image-message {
  pointer-events: none;
}

/* Dark mode: adapt canvas, wrapper and overlay */
@media (prefers-color-scheme: dark) {
  .canvas-wrapper {
    background-color: var(--color-surface);
    border: 1px solid var(--color-card-border);
  }
  #annotationCanvas {
    background-color: var(--color-surface);
    border-color: var(--color-card-border-inner);
  }
  .upload-overlay {
    background-color: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.04);
    color: var(--color-text);
  }
  .no-image-message p {
    color: var(--color-text-secondary);
  }
}

/* Also support manual data-color-scheme toggling */
[data-color-scheme="dark"] .canvas-wrapper,
[data-color-scheme="dark"] #annotationCanvas {
  background-color: var(--color-surface);
  border-color: var(--color-card-border-inner);
}
[data-color-scheme="dark"] .upload-overlay {
  background-color: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.04);
  color: var(--color-text);
}

/* Ensure upload button is accessible on small screens */
@media (max-width: 640px) {
  .upload-overlay {
    width: 40px;
    height: 40px;
    top: 8px;
    left: 8px;
  }
}

.coordinate-display {
  position: absolute;
  bottom: var(--space-16);
  right: var(--space-16);
  background-color: rgba(0, 0, 0, 0.8);
  color: var(--color-white);
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  font-family: var(--font-family-base);
  pointer-events: none;
  display: none;
}

.coordinate-display.active {
  display: block;
}

.no-image-message {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--color-text-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-16);
  z-index: 1;
  pointer-events: none;
}

.no-image-message.hidden {
  display: none;
}



.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
  min-width: 0;
}

.stats-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-base);
  padding: var(--space-6) var(--space-8);
  box-shadow: var(--shadow-sm);
}

.stats-panel h3 {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-secondary);
}

.stat-item {
  text-align: centre;
  padding: var(--space-4) var(--space-6);
  background-color: var(--color-bg-1);
  border-radius: var(--radius-sm);
}

.stat-value {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: 1px;
}

.stat-label {
  display: block;
  font-size: 10px;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr); /* changed to fit Points / Polygons / Total */
  gap: var(--space-4);
}


.shapes-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-12);
  box-shadow: var(--shadow-sm);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-8);
}

.panel-header h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
}

.shapes-list {
  flex: 1;
  overflow-y: auto;
  max-height: calc(100vh - 250px);
}

.empty-message {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  padding: var(--space-24);
}

.shape-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  background-color: var(--color-bg-2);
  border: 1px solid var(--color-card-border-inner);
  border-radius: var(--radius-sm);
  padding: var(--space-6) var(--space-8);
  margin-bottom: var(--space-4);
  transition: all var(--duration-fast) var(--ease-standard);
}

.shape-item:hover {
  box-shadow: var(--shadow-sm);
}

.shape-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2);
}

.shape-title {
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-xs);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.shape-type-badge {
  display: inline-block;
  padding: 1px var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-bg-3);
  font-size: 10px;
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  line-height: 1.2;
}

.shape-type-badge.point {
  background-color: rgba(239, 68, 68, 0.2);
  color: #dc2626;
}

.shape-type-badge.polygon {
  background-color: rgba(59, 130, 246, 0.2);
  color: #2563eb;
}

.delete-btn {
  background: transparent;
  border: none;
  color: var(--color-error);
  cursor: pointer;
  padding: var(--space-2);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background-color var(--duration-fast) var(--ease-standard);
}

.delete-btn svg {
  width: 14px;
  height: 14px;
}

.delete-btn:hover {
  background-color: rgba(var(--color-error-rgb), 0.1);
}

.rename-btn {
  background: transparent;
  border: none;
  color: var(--color-primary);
  cursor: pointer;
  padding: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background-color var(--duration-fast) var(--ease-standard);
}

.rename-btn:hover {
  background-color: rgba(var(--color-primary-rgb, var(--color-teal-500-rgb)), 0.1);
}

.shape-details {
  display: none;
}

.shape-coords {
  font-family: var(--font-family-base);
  font-size: 10px;
  margin-top: var(--space-1);
  color: var(--color-text-secondary);
}

.shape-name-input {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 1px var(--space-4);
  font-size: var(--font-size-xs);
  font-family: var(--font-family-base);
  color: var(--color-text);
  cursor: text;
  transition: all var(--duration-fast) var(--ease-standard);
  min-width: 60px;
  max-width: 80px;
}

.shape-name-input:hover {
  background-color: var(--color-secondary);
  border-color: var(--color-border);
}

.shape-name-input:focus {
  outline: none;
  background-color: var(--color-surface);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-focus-ring);
}

.success-notification {
  position: fixed;
  top: var(--space-24);
  right: var(--space-24);
  background-color: var(--color-success);
  color: var(--color-white);
  padding: var(--space-16) var(--space-24);
  border-radius: var(--radius-base);
  box-shadow: var(--shadow-lg);
  font-weight: var(--font-weight-medium);
  z-index: 1000;
  animation: slideIn 0.3s var(--ease-standard);
}

.success-notification.fade-out {
  animation: fadeOut 0.3s var(--ease-standard);
  opacity: 0;
}

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

@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

/* Header compact layout: keep title left, controls right on same line */
.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-12);
}

/* Compact header controls block */
.header-controls {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  height: 40px;
}

/* Smaller variant of mode selector and stats for header */
.mode-selector.compact {
  padding: 6px 8px;
  background: transparent;
  border: 1px solid var(--color-card-border-inner);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 8px;
}
.mode-selector.compact .radio-group { gap: 8px; }
.stats-panel.compact {
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-card-border-inner);
  background: transparent;
}
.stats-grid.compact { display: flex; gap: 8px; align-items: center; }

/* Header CSV buttons: small icons inline with header */
.csv-buttons.header-csv { display: flex; gap: 8px; align-items: center; }
.csv-buttons.header-csv .btn { padding: 6px 6px; }

/* Keep annotations panel side-by-side (existing main-content grid already handles) */
/* Hide coordinates in shapes list to save vertical space */
.shape-coords {
  display: none;
}

/* Make shape-name-input occupy full width when space permits */
.shape-title { gap: 6px; }
.shape-name-input { max-width: 160px; }

/* Ensure canvas wrapper doesn't shift unexpectedly when header content changes */
/* Give canvas-wrapper a fixed min-height and allow resize adjustments via JS */
.canvas-wrapper {
  min-height: 360px; /* stable baseline */
}

/* Slightly reduce top spacing to pack header controls inline */
.header { margin-bottom: var(--space-8); }

/* Ensure header controls (mode + stats) visually align and match height with title */
.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center; /* center vertically so everything is same line */
  gap: var(--space-12);
}
.header-left { display: flex; flex-direction: column; justify-content: center; }

/* Make each control inside header-controls stretch and center vertically */
.header-controls > * { display: flex; align-items: center; height: 40px; }

/* Canvas top controls (undo/clear) placed over canvas top-right */
.canvas-top-controls {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 60;
  display: flex;
  gap: 8px;
  pointer-events: auto;
  background: transparent;
}

/* Make the small action buttons compact and consistent with header */
.canvas-top-controls .btn {
  padding: 6px 8px;
  min-width: 38px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

/* Refined header controls */
.header-controls {
    display: flex;
    align-items: center;
    gap: var(--space-16);
    height: 40px;
}

/* Make mode selector more compact */
.mode-selector.compact {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    height: 36px;
    padding: 0 var(--space-8);
    background: var(--color-surface);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-base);
}

/* Compact statistics */
.stats-panel.compact {
    height: 36px;
    padding: 0 var(--space-12);
    background: var(--color-background);
    border: 0px solid var(--color-card-border);
    border-radius: var(--radius-base);
    display: flex;
    align-items: center;
}

.stats-grid.compact {
    display: flex;
    gap: var(--space-16);
    align-items: center;
    height: 100%;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: 0;
    background: none;
}

.stat-value {
    font-size: var(--font-size-base);
    margin: 0;
}

.stat-label {
    font-size: var(--font-size-xs);
}

/* Full-height scrolling annotations panel */
.shapes-panel {
    height: calc(100vh - var(--space-32) - 60px); /* Account for header height */
    display: flex;
    flex-direction: column;
}

.shapes-list {
    flex: 1;
    overflow-y: auto;
    padding-right: var(--space-8);
}

/* Better aligned annotation items */
.shape-item {
    padding: var(--space-8) var(--space-12);
}

.shape-title {
    flex: 1;
    display: flex;
    align-items: center;
}

.shape-type-badge {
    flex: 0 0 auto;
    width: 56px; /* Fixed width for alignment */
    text-align: center;
}

.shape-name-input {
    flex: 1;
    min-width: 120px;
    max-width: none;
    margin-left: var(--space-8);
}

/* Better undo icon style */
.canvas-top-controls .btn svg {
    width: 16px;
    height: 16px;
}

/* Interaction mode toggle buttons */
.interaction-mode-toggle {
    display: flex;
    gap: var(--space-4);
    align-items: center;
}

.mode-toggle-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    padding: var(--space-6) var(--space-10);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-sm);
    background-color: transparent;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-standard);
    font-family: var(--font-family-base);
    height: 36px;
}

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

.mode-toggle-btn.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-btn-primary-text);
}

.mode-toggle-btn.active:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}

.mode-toggle-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.mode-toggle-btn span {
    white-space: nowrap;
}


/* Hotkey Cheat Sheet - Floating Panel */
.hotkey-cheatsheet {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-base);
    box-shadow: var(--shadow-lg);
    z-index: 100;
    min-width: 260px;
    max-width: 300px;
    font-family: var(--font-family-base);
    transition: all var(--duration-normal) var(--ease-standard);
}

.hotkey-cheatsheet.collapsed .cheatsheet-content {
    display: none;
}

.cheatsheet-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-12) var(--space-16);
    border-bottom: 1px solid var(--color-card-border-inner);
    cursor: pointer;
    user-select: none;
}

.cheatsheet-title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
}

.cheatsheet-toggle {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-size: 18px;
    cursor: pointer;
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--duration-fast);
}

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

.cheatsheet-content {
    padding: var(--space-12);
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
}

.cheatsheet-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.cheatsheet-item {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    font-size: var(--font-size-xs);
}

.cheatsheet-item kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--color-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
    min-width: 20px;
    text-align: center;
}

.cheatsheet-item span {
    color: var(--color-text-secondary);
    flex: 1;
}

/* Zoom indicator */
.zoom-indicator {
    position: absolute;
    bottom: 12px;
    left: 12px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-family: var(--font-family-mono);
    pointer-events: none;
    z-index: 50;
    opacity: 0;
    transition: opacity var(--duration-fast);
}

.zoom-indicator.active {
    opacity: 1;
}

/* Make canvas wrapper support panning */
.canvas-wrapper {
    overflow: hidden;
    position: relative;
    cursor: grab;
}

.canvas-wrapper.panning {
    cursor: grabbing;
}

.canvas-wrapper canvas {
    transform-origin: top left;
}