: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;
}

html, body, .app-container {
  max-width: 100%;
  overflow-x: hidden;
}

/* 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;
  background: transparent;
  color: var(--color-text);
  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;
}

.btn--icon {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: var(--radius-sm);
}

.btn--icon svg {
  width: 18px;
  height: 18px;
}

.btn.btn--icon { color: var(--color-text); }
.btn--outline.btn--icon { color: var(--color-text); }
.btn--secondary.btn--icon { color: var(--color-error); }

/* 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 {
  /* 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);

  --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");

  --color-success-rgb: 33, 128, 141;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 168, 75, 47;
  --color-info-rgb: 98, 108, 113;

  --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;

  --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;

  --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);

  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;

  /* Invoice Theme Colors */
  --invoice-primary: #0066CC;
  --invoice-secondary: #003366;
  --invoice-accent: #0099FF;
}

/* Light mode (default) */
body {
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Dark mode override */
body.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;

  --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);
  --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
  --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

  --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);
}

body.dark-mode select.form-control {
  background-image: var(--select-caret-dark);
}

@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);
    --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
    --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

    --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);
  }
}

@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;
}

.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;
  gap: var(--space-6);
}

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

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

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

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

.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-6) var(--space-12);
  font-size: var(--font-size-sm);
}

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

.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);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

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

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

@media (prefers-color-scheme: dark) {
  select.form-control {
    background-image: var(--select-caret-dark);
  }
}

.form-label {
  display: block;
  margin-bottom: var(--space-6);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

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

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

.form-grid--3 {
  grid-template-columns: 2fr 1fr 1fr;
}

.hidden {
  display: none !important;
}

/* App Layout */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-24) var(--space-24);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-content {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  max-width: 1800px;
  margin: 0 auto;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  color: var(--color-primary);
  justify-content: flex-start;
}

.logo-section h1 {
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

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

.main-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  flex: 1;
  max-width: 1800px;
  margin: 0 auto;
  width: 100%;
}

.editor-action-bar {
  margin-top: var(--space-24);
  padding-top: var(--space-8);
}
.editor-action-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(180px, 1fr));
  gap: var(--space-12);
}
.btn--lg {
  padding: var(--space-12) var(--space-20);
  font-size: 16px;
  border-radius: var(--radius-lg);
}
@media (max-width: 768px) {
  .editor-action-grid { grid-template-columns: 1fr; }
}

/* Control Panel */
.control-panel {
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
}

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

.editor-tabs-nav {
  display: flex;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
  position: sticky;
  top: 0;
  position: sticky;
  z-index: 5;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: var(--space-8) 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.editor-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 var(--space-16);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-background);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-standard);
  gap: var(--space-8);
  box-shadow: var(--shadow-sm);
  flex: 0 0 auto;
}

.editor-tab:hover { background: var(--color-secondary); }
.editor-tab.active { background: var(--color-primary); color: var(--color-btn-primary-text); border-color: var(--color-primary); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.editor-tab svg { width: 18px; height: 18px; display: block; }

#editorTabsContent { display: block; }
.editor-tab-panel { display: none; animation: fadeSlideIn 180ms ease; }
.editor-tab-panel.active { display: block; }

.panel-scroll > .control-section { display: none; }
.editor-tab-panel .control-section { display: block; }

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.editor-tabs-indicator {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--duration-normal) var(--ease-standard), width var(--duration-normal) var(--ease-standard);
}

.control-section {
  margin-bottom: var(--space-32);
  padding-bottom: var(--space-24);
  border-bottom: 1px solid var(--color-border);
}

.control-section:last-child {
  border-bottom: none;
}

.section-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-16);
  color: var(--color-text);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-16);
}

/* Logo Upload */
.logo-upload-area {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.logo-preview {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-24);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  background: var(--color-background);
  transition: all var(--duration-normal) var(--ease-standard);
}

.logo-preview:hover {
  border-color: var(--color-primary);
  background: var(--color-secondary);
}

.logo-preview img {
  max-width: 100%;
  max-height: 100px;
  object-fit: contain;
}

.upload-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: color var(--duration-fast) var(--ease-standard);
}

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

.logo-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
  margin-top: var(--space-12);
}

.logo-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--color-secondary);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.logo-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.logo-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.logo-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.logo-slider::-moz-range-thumb:hover {
  transform: scale(1.2);
}

/* Line Items */
.line-items-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
}

.line-item {
  background: var(--color-background);
  padding: var(--space-16);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.line-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-12);
}

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

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

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

.line-item-total {
  margin-top: var(--space-12);
  padding-top: var(--space-12);
  border-top: 1px solid var(--color-border);
  font-weight: var(--font-weight-semibold);
  text-align: right;
  color: var(--color-text);
}

/* Template Selector */
.template-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-12);
}

.template-option {
  background: var(--color-background);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-12);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  transition: all var(--duration-normal) var(--ease-standard);
}

.template-option:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.template-option.active {
  border-color: var(--color-primary);
  background: var(--color-secondary);
}

.template-preview {
  width: 100%;
  height: 60px;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.professional-preview {
  background: linear-gradient(135deg, #0066CC 0%, #003366 100%);
}

.minimal-preview {
  background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
}

.colorful-preview {
  background: linear-gradient(135deg, #FF6B6B 0%, #4ECDC4 50%, #45B7D1 100%);
}

.template-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

/* Color Theme Selector */
.color-theme-selector {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.color-theme-option {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-12);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-12);
  transition: all var(--duration-normal) var(--ease-standard);
}

.color-theme-option:hover {
  border-color: var(--color-primary);
  background: var(--color-secondary);
}

.color-theme-option.active {
  border-color: var(--color-primary);
  background: var(--color-secondary);
}

.color-swatch {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

/* AI Tips */
.ai-tips {
  margin-top: var(--space-16);
  padding: var(--space-16);
  background: var(--color-bg-1);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.tips-title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-8);
  color: var(--color-text);
}

.tips-list {
  list-style: none;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.tips-list li {
  padding: var(--space-4) 0;
  padding-left: var(--space-16);
  position: relative;
}

.tips-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

/* Preview Panel */
.preview-panel {
  background: var(--color-bg-2);
  padding: var(--space-32);
  overflow-y: auto;
  overflow-x: hidden;
}

.preview-container {
  max-width: 900px;
  margin: 0 auto;
}

.invoice-preview {
  background: white;
  padding: var(--space-32);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  min-height: 800px;
  color: #333;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow-x: hidden;
  word-break: break-word;
  position: relative;
}

body { overflow-x: hidden; }

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

.page-container {
  max-width: 1000px;
  margin: 0 auto;
}

.widgets-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
}

.client-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-12);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-12);
}
.client-main {
  display: flex;
  align-items: center;
  gap: var(--space-12);
}
.client-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--color-text);
}
.client-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}
.client-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.tag-chip {
  font-size: 11px;
  border: 1px solid var(--color-card-border);
  color: var(--color-text);
  background: var(--color-surface);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}
.client-actions {
  display: flex;
  gap: var(--space-8);
}
.btn--star {
  color: var(--color-warning);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.card .section-title {
  margin: var(--space-16) var(--space-16) var(--space-8);
}

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

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

.toolbar .form-control {
  min-width: 220px;
}

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

.table-actions {
  display: inline-flex;
  gap: var(--space-8);
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.list-empty {
  color: var(--color-text-secondary);
  padding: var(--space-12);
}

/* Invoice Styles */
.invoice-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-32);
  padding-bottom: var(--space-24);
  border-bottom: 2px solid #e0e0e0;
}

.invoice-logo {
  max-width: 200px;
  max-height: 80px;
  object-fit: contain;
}

.invoice-title-section {
  text-align: inherit;
  min-width: 0;
}

.invoice-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: var(--space-8);
  letter-spacing: -0.02em;
}

.invoice-meta {
  font-size: var(--font-size-sm);
  color: #666;
  line-height: 1.8;
}

.invoice-meta-row {
  display: flex;
  justify-content: flex-start;
  gap: var(--space-8);
}

.invoice-meta-label {
  font-weight: 600;
}

.invoice-parties {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-32);
  margin-bottom: var(--space-32);
}

.invoice-party h4 {
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-12);
  color: #888;
}

.invoice-party-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: #333;
}

.invoice-party-details {
  font-size: var(--font-size-sm);
  color: #666;
  line-height: 1.6;
}

/* Invoice Table */
.invoice-table-container {
  margin-bottom: var(--space-32);
}

.invoice-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.invoice-table thead {
  border-bottom: 2px solid var(--color-border);
}

.invoice-table th {
  padding: var(--space-12);
  text-align: left;
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
}

.invoice-table th:last-child,
.invoice-table td:last-child {
  text-align: right;
}

.invoice-table tbody tr {
  border-bottom: 1px solid var(--color-card-border-inner);
}

.invoice-table td {
  padding: var(--space-16) var(--space-12);
  font-size: var(--font-size-base);
  color: var(--color-text);
  word-break: break-word;
}

.invoice-table .item-description {
  font-weight: 500;
}

.invoice-totals {
  display: flex;
  justify-content: flex-end;
  margin-bottom: var(--space-32);
}

.invoice-totals-table {
  width: 300px;
}

.invoice-totals-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-8) 0;
  font-size: var(--font-size-base);
}

.invoice-totals-row.subtotal,
.invoice-totals-row.tax {
  color: #666;
}

.invoice-totals-row.total {
  border-top: 2px solid #e0e0e0;
  padding-top: var(--space-16);
  margin-top: var(--space-8);
  font-size: var(--font-size-xl);
  font-weight: 700;
}

.invoice-footer {
  margin-top: var(--space-32);
  padding-top: var(--space-24);
  border-top: 1px solid #e0e0e0;
}

.invoice-watermark {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-20deg);
  font-size: 64px;
  font-weight: 700;
  color: rgba(0,0,0,0.15);
  pointer-events: none;
  user-select: none;
}

.invoice-signature {
  margin-top: var(--space-24);
  display: flex;
  align-items: center;
  gap: var(--space-16);
}

.invoice-qr {
  touch-action: none;
  user-select: none;
}

.invoice-notes-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-8);
  color: #888;
}

.invoice-notes-content {
  font-size: var(--font-size-sm);
  color: #666;
  line-height: 1.6;
}

/* Template Variations */
.invoice-preview.template-minimal {
  padding: var(--space-24);
}

.invoice-preview.template-minimal .invoice-header {
  border-bottom: 1px solid #e0e0e0;
}

.invoice-preview.template-minimal .invoice-title {
  font-size: 28px;
}

.invoice-preview.template-colorful .invoice-header {
  background: linear-gradient(135deg, var(--invoice-primary) 0%, var(--invoice-accent) 100%);
  padding: var(--space-24);
  margin: 0 0 var(--space-32);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  color: white;
  border-bottom: none;
}

.invoice-preview.template-colorful .invoice-title {
  color: white;
}

.invoice-preview.template-colorful .invoice-meta {
  color: rgba(255, 255, 255, 0.9);
}

.invoice-preview.template-colorful .invoice-table thead {
  background: var(--invoice-primary);
  color: white;
}

.invoice-preview.template-colorful .invoice-table th {
  color: white;
}

/* Responsive */
@media (max-width: 1024px) {
  .main-content {
    grid-template-columns: 1fr 1fr;
  }

  .control-panel {
    max-height: calc(100vh - 80px);
  }

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

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

  .widgets-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .app-header { padding: var(--space-12) var(--space-16); }
  .logo-section h1 { font-size: var(--font-size-lg); }
  .main-content {
    grid-template-columns: 1fr;
  }

  .control-panel {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    max-height: none;
  }

  .header-content {
    flex-wrap: wrap;
    gap: var(--space-12);
    max-width: 100%;
    justify-content: center;
    text-align: center;
  }

  .header-actions {
    width: 100%;
    justify-content: center;
    align-items: center;
  }
  .logo-section { justify-content: center; }
  .actions-row { justify-content: center; }

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

  .invoice-preview {
    padding: var(--space-16);
    font-size: 13px;
  }

  .invoice-header {
    flex-direction: column;
    gap: var(--space-16);
  }

  .invoice-title-section {
    text-align: left;
  }

  .invoice-title {
    font-size: 28px;
  }

  .invoice-parties {
    grid-template-columns: 1fr;
    gap: var(--space-20);
  }

  .invoice-table {
    font-size: 12px;
  }

.invoice-table th,
.invoice-table td {
  padding: var(--space-8);
}

  .invoice-preview.template-colorful .invoice-header {
    margin: var(--space-0) var(--space-0) var(--space-32);
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .form-grid--3 {
    grid-template-columns: 1fr;
  }

  .template-selector {
    grid-template-columns: 1fr;
  }

.panel-scroll {
  padding: var(--space-16);
}
  .editor-tabs-nav { flex-wrap: nowrap; overflow-x: hidden; justify-content: space-between; }
  .editor-tab { height: 30px; padding: 0 var(--space-8); flex: 1 1 0; font-size: 12px; }
  .editor-tabs-indicator { display: none; }
  .preview-container { max-width: 100%; }

  .toolbar .form-control {
    min-width: 180px;
    flex: 1;
  }
}

@media (min-width: 1025px) {
  .editor-tabs-nav { gap: var(--space-12); }
  .editor-tab { height: 42px; padding: 0 var(--space-20); font-size: 15px; }
}

@media print {
  .control-panel,
  .app-header {
    display: none;
  }

  .preview-panel {
    padding: 0;
  }

  .invoice-preview {
    box-shadow: none;
  }
}

.subnav {
  margin-top: 12px;
  display: flex;
  gap: 8px;
}

.tab-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: var(--color-surface);
  color: var(--color-text);
  border: 2px solid var(--color-border);
  transition: transform 120ms ease, background 120ms ease, color 120ms ease, box-shadow 120ms ease;
}

.tab-link:hover {
  transform: translateY(-1px);
  background: var(--color-secondary-hover);
}

.tab-link:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--color-focus-ring);
  border-color: var(--color-primary);
}

.tab-link.active {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  box-shadow: 0 6px 14px rgba(0,0,0,0.12);
  border-color: var(--color-primary);
}

.tab-link svg {
  display: block;
  width: 22px;
  height: 22px;
}

.floating-dock {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: 24px;
  display: flex;
  gap: var(--dock-gap, 12px);
  padding: 8px;
  border-radius: 999px;
  background: var(--color-bg-2);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-lg);
  z-index: 10000;
  justify-content: center;
  width: max-content;
  max-width: 900px;
  overflow: visible;
  padding-left: calc(env(safe-area-inset-left, 0px));
  padding-right: calc(env(safe-area-inset-right, 0px));
  padding-bottom: calc(env(safe-area-inset-bottom, 0px));
  --dock-size: 52px;
  --dock-gap: 16px;
}

.floating-dock .tab-link {
  width: var(--dock-size, 52px);
  height: var(--dock-size, 52px);
  scroll-snap-align: center;
  position: relative;
}

@media (max-width: 768px) {
  .floating-dock {
    bottom: 12px;
    gap: var(--dock-gap, 10px);
    --dock-gap: 12px;
    padding: 6px;
    width: max-content;
    max-width: min(420px, 92vw);
  }
  .floating-dock .tab-link {
    width: var(--dock-size, 46px);
    height: var(--dock-size, 46px);
  }
}

body.has-dock {
  padding-bottom: 96px;
}

@media (max-width: 768px) {
  body.has-dock {
    padding-bottom: 80px;
  }
}

.dock-indicator {
  position: absolute;
  bottom: 4px;
  left: 8px;
  width: var(--dock-size, 52px);
  height: 3px;
  background: var(--color-primary);
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  transform: translateX(calc(var(--dock-index, 0) * (var(--dock-size, 52px) + var(--dock-gap, 12px))));
  transition: transform 180ms ease;
}

.tab-label {
  position: absolute;
  bottom: calc(var(--dock-size, 52px) + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: 6px 10px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
  opacity: 0;
  pointer-events: none;
  transition: opacity 120ms ease, transform 120ms ease;
}

.floating-dock.labels-open .tab-label {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.floating-dock .tab-link:hover .tab-label,
.floating-dock .tab-link.active .tab-label,
.floating-dock .tab-link:focus .tab-label,
.floating-dock .tab-link:focus-visible .tab-label {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (prefers-contrast: more) {
  .floating-dock {
    background: var(--color-white);
    border: 2px solid var(--color-primary);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  }
  .tab-link {
    border: 2px solid var(--color-primary);
  }
  .tab-link.active {
    box-shadow: 0 0 0 4px rgba(var(--color-teal-500-rgb), 0.2);
  }
}
html[data-color-scheme="light"] {
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  --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);
}

html[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-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);
}
.page-limit-indicator {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 8px;
  height: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.page-limit-indicator::before {
  content: "Approaching page limit";
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 12px;
  color: #8a6d3b;
  background: rgba(255, 193, 7, 0.25);
  border: 1px dashed rgba(255, 193, 7, 0.5);
}

.invoice-table .item-description {
  white-space: normal;
  word-break: break-word;
}
.invoice-table tbody tr:hover {
  background: var(--color-secondary);
}

.btn--icon:hover {
  background: var(--color-secondary);
}
.btn--icon:active {
  background: var(--color-secondary-active);
}
.action-btn {
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: var(--radius-md);
  background: var(--color-secondary);
  border: 1px solid var(--color-card-border);
  color: var(--color-text);
  transition: background var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    transform var(--duration-fast) var(--ease-standard);
}

.action-btn svg {
  width: 18px;
  height: 18px;
}

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

.action-btn:active {
  background: var(--color-secondary-active);
  transform: translateY(1px);
}

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

.action--load:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-btn-primary-text);
}
.action--load:active { background: var(--color-primary-active); }

.action--payment:hover {
  background: var(--color-success);
  border-color: var(--color-success);
  color: var(--color-btn-primary-text);
}

.action--log:hover {
  background: var(--color-info);
  border-color: var(--color-info);
  color: var(--color-btn-primary-text);
}

.action--status:hover {
  background: var(--color-info);
  border-color: var(--color-info);
  color: var(--color-btn-primary-text);
}

.action--duplicate:hover {
  background: var(--color-secondary);
  border-color: var(--color-card-border);
}

.action--delete:hover {
  background: var(--color-error);
  border-color: var(--color-error);
  color: var(--color-btn-primary-text);
}