: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);

  --header-offset: 0px;

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

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

    /* Background color tokens (Dark Mode) */
    --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
    --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
    --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
    --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
    --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
    --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
    --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
    --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */
    
    /* Semantic Color Tokens (Dark Mode) */
    --color-background: var(--color-charcoal-700);
    --color-surface: var(--color-charcoal-800);
    --color-text: var(--color-gray-200);
    --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
    --color-primary: var(--color-teal-300);
    --color-primary-hover: var(--color-teal-400);
    --color-primary-active: var(--color-teal-800);
    --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
    --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
    --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
    --color-border: rgba(var(--color-gray-400-rgb), 0.3);
    --color-error: var(--color-red-400);
    --color-success: var(--color-teal-300);
    --color-warning: var(--color-orange-400);
    --color-info: var(--color-gray-300);
    --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
    --color-btn-primary-text: var(--color-slate-900);
    --color-card-border: rgba(var(--color-gray-400-rgb), 0.2);
    --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
    --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
      inset 0 -1px 0 rgba(0, 0, 0, 0.15);
    --button-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
    --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
    --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

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

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

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

  /* Colorful background palette - Dark Mode */
  --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
  --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
  --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
  --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
  --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
  --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
  --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
  --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */
  
  /* Semantic Color Tokens (Dark Mode) */
  --color-background: var(--color-charcoal-700);
  --color-surface: var(--color-charcoal-800);
  --color-text: var(--color-gray-200);
  --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
  --color-primary: var(--color-teal-300);
  --color-primary-hover: var(--color-teal-400);
  --color-primary-active: var(--color-teal-800);
  --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
  --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
  --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
  --color-border: rgba(var(--color-gray-400-rgb), 0.3);
  --color-error: var(--color-red-400);
  --color-success: var(--color-teal-300);
  --color-warning: var(--color-orange-400);
  --color-info: var(--color-gray-300);
  --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
  --color-btn-primary-text: var(--color-slate-900);
  --color-card-border: rgba(var(--color-gray-400-rgb), 0.15);
  --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.15);
  --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
  --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

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

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

[data-color-scheme="light"] {
  /* RGB versions for opacity control (light mode) */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  
  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-teal-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);

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

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

body {
  margin: 0;
  padding: 0;
}

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

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

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

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

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

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

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

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

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

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

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

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

.btn:active {
  transform: translateY(1px);
}

.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%;
}

.button-row {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--space-8);
}

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

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

.form-control[readonly] {
  background-color: var(--color-secondary);
  color: var(--color-text-secondary);
  cursor: not-allowed;
}

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 {
  position: relative;
  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),
    transform var(--duration-normal) var(--ease-standard);
}

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

.card:focus-within {
  box-shadow: var(--shadow-md);
  border-color: rgba(var(--color-teal-500-rgb), 0.35);
}

@media (hover: hover) {
  .card:hover {
    transform: translateY(-2px);
  }
}

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

.card__body > h3 {
  position: relative;
  padding-bottom: var(--space-8);
  margin-bottom: var(--space-12);
}

.card__body > h3::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 3px;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-teal-500), var(--color-orange-400));
  opacity: 0.6;
}

.card__body > h3 + .section-desc {
  margin-top: var(--space-6);
}

.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 */
/* Application-specific styles */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-background);
}

/* Header */
.app-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-16) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.app-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-12);
  margin: 0;
}

.title-icon {
  font-size: var(--font-size-4xl);
}

.app-subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  margin: var(--space-8) auto 0 auto;
  text-align: center;
  max-width: 960px;
  line-height: 1.6;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.language-selector,
.currency-selector {
  min-width: 120px;
  font-size: var(--font-size-sm);
}

.theme-icon {
  font-size: var(--font-size-lg);
}

/* Section headers */
.section-header {
  margin: var(--space-24) 0 var(--space-16) 0;
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
}

.section-header h4 {
  color: var(--color-primary);
  margin: 0;
  font-size: var(--font-size-lg);
}

/* Tab Navigation - Fixed */
.tab-navigation {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0;
  overflow-x: auto;
  position: sticky;
  top: var(--header-offset);
  z-index: 80;
  box-shadow: var(--shadow-xs);
}

.tab-list {
  display: flex;
  gap: var(--space-4);
  min-width: max-content;
}

.tab-button {
  background: none;
  border: none;
  padding: var(--space-16) var(--space-20);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  border-bottom: 3px solid transparent;
  white-space: nowrap;
  position: relative;
  z-index: 51;
}

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

.tab-button.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  background-color: var(--color-secondary);
}

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


#basicResultsCard,
#advancedResultsCard,
#comparisonResultsCard,
#affordabilityResultsCard,
#buyRentOutput,
#refinanceOutput {
  scroll-margin-top: calc(var(--header-offset) + 32px);
}

/* Main Content */
.main-content {
  flex: 1;
  padding: var(--space-32) 0;
  position: relative;
}

.main-content::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 10% 10%, rgba(var(--color-teal-500-rgb), 0.12), transparent 55%),
    radial-gradient(circle at 90% 15%, rgba(var(--color-orange-400-rgb), 0.12), transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.main-content > .container {
  position: relative;
  z-index: 1;
}


/* Tab Panels - Fixed with important declarations */
.tab-panel {
  display: none !important;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-standard);
}

.tab-panel.active {
  display: block !important;
  opacity: 1;
}

.panel-header {
  text-align: center;
  margin-bottom: var(--space-32);
}

.panel-header h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-8);
}

.panel-header h2::after {
  content: '';
  display: block;
  width: 72px;
  height: 4px;
  margin: var(--space-8) auto 0;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-teal-500), var(--color-orange-400));
  opacity: 0.7;
}


.panel-header p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin: 0 auto;
  max-width: 720px;
  line-height: 1.6;
}


/* Calculator Layout */
.calculator-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-32);
  align-items: start;
}

@media (max-width: 1024px) {
  .calculator-layout {
    grid-template-columns: 1fr;
  }
}

.input-section, .results-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
}

/* Input Components - Fixed for better interaction */
.input-with-currency {
  position: relative;
  display: flex;
  align-items: center;
  --currency-symbol-width: 4.5ch;
}

.currency-symbol {
  position: absolute;
  left: var(--space-12);
  min-width: var(--currency-symbol-width);
  text-align: left;
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  z-index: 1;
  pointer-events: none;
  white-space: nowrap;
}

.input-with-currency .form-control {
  padding-left: calc(var(--space-12) + var(--currency-symbol-width) + var(--space-8));
}

.input-with-currency:focus-within .currency-symbol {
  color: var(--color-primary);
}

.input-group {
  display: flex;
  gap: var(--space-8);
  align-items: end;
}

.input-group--slider {
  align-items: center;
  min-height: 42px;
}

.input-group--slider .slider {
  flex: 1;
  height: 42px;
  margin-top: 0;
  padding: 0;
  transform: translateY(-2px);
}

.input-group .form-control {
  flex: 1;
}

.percentage-display {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 60px;
  height: 42px;
  background-color: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
}

.slider-container {
  margin-top: var(--space-8);
}

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

.slider::-webkit-slider-runnable-track {
  height: 6px;
  background: var(--color-secondary);
  border-radius: var(--radius-full);
}

.slider::-moz-range-track {
  height: 6px;
  background: var(--color-secondary);
  border-radius: var(--radius-full);
}

.slider::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  border: 2px solid var(--color-surface);
  box-shadow: var(--shadow-sm);
  margin-top: -7px;
}

.slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-primary);
  cursor: pointer;
  border: 2px solid var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.help-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-top: var(--space-4);
  display: block;
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.toggle-row input {
  width: 16px;
  height: 16px;
}

.input-group .slider {
  flex: 1;
}

/* Form Control Enhancements */
.form-control {
  pointer-events: auto;
  user-select: text;
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
}

.form-control:focus {
  border-color: var(--color-primary);
  outline: var(--focus-outline);
  z-index: 10;
  position: relative;
}

/* Select dropdown enhancements */
select.form-control {
  cursor: pointer;
  padding-right: var(--space-32);
}

select.form-control:focus {
  outline: var(--focus-outline);
}

/* Results */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-16);
}

#calculationResults {
  margin-top: var(--space-12);
}

#downPaymentWarning {
  margin-top: var(--space-16);
}

.payment-split {
  margin-top: var(--space-16);
  padding: var(--space-12);
  border-radius: var(--radius-base);
  border: 1px solid var(--color-border);
  background: var(--color-bg-2);
}

.payment-split__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-12);
  margin-bottom: var(--space-8);
}

.payment-split__title {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

.payment-split__total {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.payment-split__bar {
  display: flex;
  height: 10px;
  border-radius: var(--radius-full);
  overflow: hidden;
  background: var(--color-secondary);
}

.payment-split__segment {
  height: 100%;
  width: 0;
}

.payment-split__segment--pi {
  background: #1FB8CD;
}

.payment-split__segment--taxes {
  background: #F59E0B;
}

.payment-split__segment--insurance {
  background: #60A5FA;
}

.payment-split__segment--hoa {
  background: #94A3B8;
}

.payment-split__legend {
  margin-top: var(--space-12);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-8) var(--space-16);
  font-size: var(--font-size-xs);
}

.payment-split__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

.payment-split__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-6);
  color: var(--color-text-secondary);
}

.payment-split__swatch {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex-shrink: 0;
}

.payment-split__swatch--pi {
  background: #1FB8CD;
}

.payment-split__swatch--taxes {
  background: #F59E0B;
}

.payment-split__swatch--insurance {
  background: #60A5FA;
}

.payment-split__swatch--hoa {
  background: #94A3B8;
}

.payment-split__value {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  white-space: nowrap;
}

.result-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-16);
  background-color: var(--color-bg-1);
  border-radius: var(--radius-base);
  border: 1px solid var(--color-border);
  transition: transform var(--duration-normal) var(--ease-standard),
    box-shadow var(--duration-normal) var(--ease-standard);
}

.result-item.large {
  grid-column: 1 / -1;
  text-align: center;
}

@media (hover: hover) {
  .result-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
  }
}

.result-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.result-value {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
}

.result-value.primary {
  font-size: var(--font-size-4xl);
  color: var(--color-primary);
}

.result-value,
.summary-value,
.payment-split__value,
.insight-value,
.tool-verdict__value,
.report-option__value,
.comparison-cell,
.amortization-table td {
  font-variant-numeric: tabular-nums;
}

/* Summary Grid */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-12);
  margin-top: var(--space-16);
}

.assumptions-strip {
  margin-top: var(--space-16);
  padding-top: var(--space-12);
  border-top: 1px dashed var(--color-border);
  display: grid;
  gap: var(--space-8);
}

.assumptions-title {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

.assumptions-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
}

.assumption-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-6) var(--space-10);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-bg-1);
  font-size: var(--font-size-xs);
}

.assumption-label {
  color: var(--color-text-secondary);
}

.assumption-value {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.insight-strip {
  margin-top: var(--space-16);
  padding: var(--space-12);
  border-radius: var(--radius-base);
  border: 1px solid var(--color-border);
  background: var(--color-bg-1);
  display: grid;
  gap: var(--space-8);
}

.insight-title {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

.insight-group {
  display: grid;
  gap: var(--space-8);
}

.insight-group__label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

.insight-chips {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-8) var(--space-16);
}

.insight-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  padding: var(--space-8) var(--space-10);
  border-radius: var(--radius-base);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: var(--font-size-xs);
}

.insight-label {
  color: var(--color-text-secondary);
}

.insight-value {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  white-space: nowrap;
}

.summary-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-12);
  padding: var(--space-12);
  background-color: var(--color-bg-2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

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

.summary-value {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  white-space: nowrap;
  text-align: right;
}

.disclaimer {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  margin-top: var(--space-16);
  text-align: center;
}

/* Charts */
.charts-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--space-24);
}

@media (max-width: 768px) {
  .charts-container {
    grid-template-columns: 1fr;
  }
}

.chart-container {
  width: 100%;
  position: relative;
}

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

.chart-view-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  flex-wrap: wrap;
}

.chart-view-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

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


.chart-view-actions {
  margin-left: auto;
}

.chart-chip {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  padding: var(--space-6) var(--space-12);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-standard),
    border-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard);
}

.chart-chip:hover {
  border-color: var(--color-primary);
}

.chart-chip.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-btn-primary-text);
}

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

.chart-chip--ghost {
  background: transparent;
  border-style: dashed;
  color: var(--color-text-secondary);
}

.chart-chip--ghost:hover {
  color: var(--color-text);
}

.chart-options {
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-base);
  padding: var(--space-8) var(--space-12);
  background: var(--color-bg-1);
}

.chart-options__body {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-12);
}

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

.chart-input {
  margin: 0;
}

.chart-controls.is-costmix .chart-options {
  opacity: 0.6;
}

/* Chart Tooltip Enhancement */
.chart-tooltip {
  position: absolute;
  background-color: var(--color-charcoal-800);
  color: var(--color-cream-100);
  padding: var(--space-12) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  pointer-events: none;
  max-width: 300px;
  border: 1px solid var(--color-border);
}

.chart-tooltip.hidden {
  display: none !important;
}

.chart-tooltip .tooltip-title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  padding-bottom: var(--space-4);
}

.chart-tooltip .tooltip-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
}

.chart-tooltip .tooltip-item:last-child {
  margin-bottom: 0;
}

.chart-tooltip .tooltip-label {
  font-size: var(--font-size-xs);
  opacity: 0.8;
}

.chart-tooltip .tooltip-value {
  font-weight: var(--font-weight-medium);
}

/* Crosshair Styles */
.chart-crosshair {
  position: absolute;
  pointer-events: none;
  z-index: 100;
}

.chart-crosshair-line {
  position: absolute;
  background: var(--color-text-secondary);
  opacity: 0.6;
}

.chart-crosshair-vertical {
  width: 1px;
  height: 100%;
  border-left: 1px dashed var(--color-text-secondary);
}

/* Advanced Calculator */
.advanced-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-32);
  align-items: start;
}

.advanced-inputs {
  display: grid;
  gap: var(--space-24);
}

.advanced-results {
  display: grid;
  gap: var(--space-24);
}

@media (max-width: 1024px) {
  .advanced-layout {
    grid-template-columns: 1fr;
  }
}

.comparison-table {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 1px;
  background-color: var(--color-border);
  border-radius: var(--radius-base);
  overflow: hidden;
}

.comparison-layout {
  display: grid;
  gap: var(--space-32);
}

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

.comparison-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-12);
}

.comparison-action-buttons {
  display: flex;
  gap: var(--space-12);
  flex-wrap: wrap;
  justify-content: center;
}

.comparison-actions .disclaimer {
  margin-top: 0;
}

.comparison-row {
  display: contents;
}

@media (max-width: 1024px) {
  .comparison-inputs {
    grid-template-columns: 1fr;
  }
}

.comparison-cell {
  background-color: var(--color-surface);
  padding: var(--space-12) var(--space-16);
  font-size: var(--font-size-sm);
  transition: background-color var(--duration-normal) var(--ease-standard),
    color var(--duration-normal) var(--ease-standard);
}

.comparison-row.header .comparison-cell {
  background-color: var(--color-bg-2);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.comparison-cell--better {
  background-color: rgba(var(--color-teal-500-rgb), 0.12);
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.comparison-cell--worse {
  background-color: rgba(var(--color-red-400-rgb, 255, 84, 89), 0.12);
  color: var(--color-error);
}

.comparison-cell--tie {
  background-color: var(--color-bg-2);
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .comparison-table {
    grid-template-columns: 1fr;
  }
  
  .comparison-cell {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .comparison-cell::before {
    content: attr(data-label);
    font-weight: var(--font-weight-medium);
  }
}

/* Affordability */
.affordability-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-32);
  align-items: start;
}

@media (max-width: 1024px) {
  .affordability-layout {
    grid-template-columns: 1fr;
  }
}

.optional-costs {
  border: 1px solid rgba(var(--color-red-400-rgb, 255, 84, 89), 0.6);
  background-color: rgba(var(--color-red-400-rgb, 255, 84, 89), 0.08);
  border-radius: var(--radius-base);
  padding: var(--space-16);
  margin-bottom: var(--space-16);
}

.optional-costs__body {
  margin-top: var(--space-8);
}

.optional-costs.is-collapsed .optional-costs__body {
  display: none;
}

.optional-costs__header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.optional-costs__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-error);
}

.optional-costs.is-disabled {
  opacity: 0.65;
}

.affordability-formula {
  margin-top: var(--space-24);
}

.formula-title {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  margin: 0 0 var(--space-8) 0;
}

.formula-list {
  margin: 0 0 var(--space-8) 0;
  padding-left: var(--space-20);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.formula-list li {
  margin-bottom: var(--space-4);
}

.formula-note {
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  margin: 0;
}


/* Tools */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-16);
}

.form-grid .form-group {
  margin-bottom: 0;
}

@media (max-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

.details-toggle {
  margin: var(--space-16) 0;
  padding: var(--space-12) var(--space-16);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  background-color: var(--color-bg-2);
}

.details-toggle summary {
  list-style: none;
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.details-toggle summary::-webkit-details-marker {
  display: none;
}

.details-toggle summary::after {
  content: '+';
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.details-toggle[open] summary::after {
  content: '-';
}

.details-toggle .details-body {
  margin-top: var(--space-12);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: var(--space-24);
  align-items: start;
}


.tools-card--wide {
  grid-column: 1 / -1;
}

.tool-card {
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--color-primary);
}

.tool-card::after {
  content: '';
  position: absolute;
  right: -60px;
  top: -60px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  opacity: 0.55;
}

.tool-card--buyrent::after {
  background: var(--color-bg-3);
}

.tool-card--refi::after {
  background: var(--color-bg-8);
}

.tool-card--scenarios::after {
  background: var(--color-bg-2);
}

.tool-card .card__body {
  position: relative;
  z-index: 1;
}

.tools-results {
  margin-top: var(--space-12);
}

.tool-actions {
  margin-top: var(--space-16);
  padding-top: var(--space-12);
  border-top: 1px dashed var(--color-border);
  display: grid;
  gap: var(--space-8);
}

.tool-output {
  margin-top: var(--space-16);
  padding: var(--space-16);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg-1);
  display: grid;
  gap: var(--space-12);
}

.tool-output .tool-verdict {
  margin-top: 0;
  background: var(--color-surface);
}

.tool-output .tools-results {
  margin-top: 0;
}

.tool-output .result-item {
  background-color: var(--color-surface);
}

.tool-verdict {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  align-items: center;
  gap: var(--space-8) var(--space-12);
  padding: var(--space-10) var(--space-12);
  border-radius: var(--radius-base);
  border: 1px solid var(--color-border);
  background: var(--color-bg-2);
  margin-top: var(--space-12);
}

.tool-verdict__label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

.tool-verdict__value {
  font-weight: var(--font-weight-semibold);
  justify-self: end;
  text-align: right;
}

@media (max-width: 600px) {
  .tool-verdict {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .tool-verdict__value {
    justify-self: start;
    text-align: left;
  }
}

.refi-sections {
  display: grid;
  gap: var(--space-16);
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.refi-section {
  padding: var(--space-12);
  border-radius: var(--radius-base);
  background: var(--color-bg-1);
  border: 1px solid var(--color-border);
}

.refi-section__title {
  margin: 0 0 var(--space-12) 0;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.section-desc {
  margin: 0 0 var(--space-16) 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.scenario-actions,
.scenario-list {
  display: flex;
  gap: var(--space-16);
  flex-wrap: wrap;
  align-items: flex-end;
}

.scenario-actions .form-group,
.scenario-list .form-group {
  flex: 1 1 220px;
  min-width: 220px;
  margin-bottom: 0;
}

.scenario-list {
  margin-top: var(--space-12);
}

.scenario-buttons {
  display: flex;
  gap: var(--space-12);
  flex-wrap: wrap;
}

/* Reports */
.reports-layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
}

.report-controls {
  display: flex;
  gap: var(--space-12);
  justify-content: center;
  flex-wrap: wrap;
}

.report-context {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-top: var(--space-8);
}

.report-meta {
  display: flex;
  justify-content: space-between;
  gap: var(--space-16);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.report-meta__item {
  display: flex;
  gap: var(--space-8);
  align-items: baseline;
}

.print-only {
  display: none;
}

.report-options__summary {
  margin-top: var(--space-8);
  display: grid;
  gap: var(--space-8);
}

.report-option {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
}

.report-option__label {
  color: var(--color-text-secondary);
}

.report-option__value {
  font-weight: var(--font-weight-semibold);
  color: var(--color-error);
  white-space: nowrap;
}

.summary-item--optional {
  border-color: rgba(var(--color-red-400-rgb, 255, 84, 89), 0.6);
  background-color: rgba(var(--color-red-400-rgb, 255, 84, 89), 0.08);
}

.summary-item--optional .summary-value {
  color: var(--color-error);
}

.table-container {
  overflow: auto;
  max-height: 420px;
  border-radius: var(--radius-base);
  border: 1px solid var(--color-border);
}

.amortization-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.amortization-table th,
.amortization-table td {
  padding: var(--space-12) var(--space-16);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.amortization-table th:nth-child(1),
.amortization-table td:nth-child(1),
.amortization-table th:nth-child(3),
.amortization-table td:nth-child(3),
.amortization-table th:nth-child(4),
.amortization-table td:nth-child(4),
.amortization-table th:nth-child(5),
.amortization-table td:nth-child(5),
.amortization-table th:nth-child(6),
.amortization-table td:nth-child(6) {
  text-align: right;
}

.amortization-summary-row td {
  background-color: var(--color-bg-2);
  font-style: italic;
}

.amortization-summary-row td:first-child {
  text-align: left;
}

.amortization-summary-label {
  text-align: center;
  color: var(--color-text-secondary);
}

.amortization-table th {
  background-color: var(--color-bg-3);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  position: sticky;
  top: 0;
  z-index: 1;
}

.amortization-table tbody tr:nth-child(even) {
  background-color: var(--color-bg-1);
}

.amortization-table tbody tr:hover {
  background-color: var(--color-bg-2);
}

.empty-state {
  text-align: center;
  color: var(--color-text-secondary);
  font-style: italic;
  padding: var(--space-32) !important;
}

/* Modal - Fixed z-index */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-16);
}

.modal.hidden {
  display: none !important;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  max-width: 600px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  z-index: 1001;
}

.modal-content--wide {
  max-width: 960px;
  width: min(960px, 95vw);
}

.chart-modal-body {
  display: grid;
  gap: var(--space-16);
}

.chart-container--modal {
  height: 520px;
}

@media (max-width: 768px) {
  .chart-view-actions {
    margin-left: 0;
  }

  .chart-container--modal {
    height: 360px;
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-20) var(--space-24);
  border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
  margin: 0;
  font-size: var(--font-size-xl);
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-2xl);
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-standard);
}

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

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

.help-content h4 {
  color: var(--color-primary);
  margin: var(--space-20) 0 var(--space-8) 0;
}

.help-content h4:first-child {
  margin-top: 0;
}

.help-content ul {
  margin: var(--space-8) 0;
  padding-left: var(--space-20);
}

.help-content li {
  margin-bottom: var(--space-4);
}

/* Tooltip */
.tooltip {
  position: absolute;
  background-color: var(--color-charcoal-800);
  color: var(--color-cream-100);
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-lg);
  z-index: 1001;
  max-width: 250px;
  word-wrap: break-word;
}

.tooltip.hidden {
  display: none !important;
}

.tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border: 5px solid transparent;
  border-top-color: var(--color-charcoal-800);
}

/* Loading Indicator */
.loading-indicator {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-24) var(--space-32);
  box-shadow: var(--shadow-lg);
  z-index: 1002;
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.loading-indicator.hidden {
  display: none !important;
}

.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-secondary);
  border-top: 2px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Utility Classes */
.center-text {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  padding: var(--space-32);
}

/* Voice Input Button */
.voice-input-btn {
  padding: var(--space-6) var(--space-8);
  min-width: auto;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Button Enhancements */
.btn {
  pointer-events: auto;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

/* Language switching transition */
.i18n-fade {
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-standard);
}

.i18n-fade.active {
  opacity: 1;
}

/* Dark mode enhancements for chart tooltips */
@media (prefers-color-scheme: dark) {
  .chart-tooltip {
    background-color: var(--color-charcoal-700);
    border: 1px solid var(--color-border);
  }
}

[data-color-scheme="dark"] .chart-tooltip {
  background-color: var(--color-charcoal-700);
  border: 1px solid var(--color-border);
}

/* Responsive Design */
@media (max-width: 768px) {
  .app-title {
    font-size: var(--font-size-2xl);
  }
  
  .header-content {
    flex-direction: column;
    gap: var(--space-12);
  }
  
  .header-controls {
    justify-content: center;
    width: 100%;
    flex-wrap: wrap;
  }
  
  .language-selector,
  .currency-selector {
    min-width: 100px;
  }
  
  .tab-button {
    padding: var(--space-12) var(--space-16);
    font-size: var(--font-size-sm);
  }
  
  .results-grid {
    grid-template-columns: 1fr;
  }
  
  .summary-grid {
    grid-template-columns: 1fr;
  }
  
  .report-controls {
    flex-direction: column;
    align-items: center;
  }
  
  .modal-content {
    margin: var(--space-16);
    max-height: calc(100vh - 32px);
  }
}

@media (max-width: 480px) {
  .main-content {
    padding: var(--space-16) 0;
  }
  
  .panel-header h2 {
    font-size: var(--font-size-2xl);
  }

  .card__body {
    padding: var(--space-16);
  }
  
  .result-value {
    font-size: var(--font-size-xl);
  }
  
  .result-value.primary {
    font-size: var(--font-size-3xl);
  }
  
  .charts-container {
    grid-template-columns: 1fr;
  }
  
  .chart-container {
    height: 250px !important;
  }

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

/* Print Styles */
@media print {
  @page {
    margin: 0.6in;
  }

  body {
    background: #fff;
    color: #000;
  }

  .app-header,
  .tab-navigation,
  .report-controls,
  .btn,
  .report-options {
    display: none !important;
  }
  
  .tab-panel {
    display: none !important;
  }

  .tab-panel.active {
    display: block !important;
  }

  body.print-report-only .tab-panel {
    display: none !important;
  }

  body.print-report-only #reports-panel {
    display: block !important;
  }

  .print-only {
    display: block !important;
  }
  
  .main-content {
    padding: 0;
  }

  .panel-header {
    margin-bottom: 12px;
  }

  .panel-header h2 {
    font-size: 16px;
  }

  .panel-header p {
    font-size: 10px;
    color: #444;
  }

  .report-context {
    text-align: left;
    margin: 4px 0 8px;
    color: #444;
  }

  .report-meta {
    color: #000;
    margin: 0 0 12px;
  }

  .reports-layout {
    gap: 12px;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #ccc;
    break-inside: avoid;
  }

  .card__body {
    padding: 12px;
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .summary-item {
    padding: 6px 8px;
    border: 1px solid #ccc;
    background: none;
  }

  .summary-item--optional {
    border-color: #999;
    background: none;
  }

  .table-container {
    overflow: visible;
    max-height: none;
    border: none;
  }
  
  .amortization-table {
    font-size: 9px;
  }
  
  .amortization-table th,
  .amortization-table td {
    padding: 4px 6px;
  }

  .amortization-table th {
    background: #f0f0f0;
    color: #000;
    position: static;
    top: auto;
    z-index: auto;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .amortization-summary-row td {
    background: #f7f7f7;
    font-style: italic;
  }

  .amortization-summary-label {
    color: #444;
  }

  .amortization-table thead {
    display: table-header-group;
  }

  .amortization-table tfoot {
    display: table-footer-group;
  }

  .amortization-table tr {
    break-inside: avoid;
  }
}

/* Focus and Accessibility Enhancements */
.form-control:focus,
.slider:focus,
.btn:focus-visible,
.tab-button:focus-visible {
  box-shadow: var(--focus-ring);
}

/* Skip to content link for screen readers */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  padding: 8px;
  text-decoration: none;
  border-radius: var(--radius-sm);
  z-index: 1000;
}

.skip-link:focus {
  top: 6px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn {
    border: 2px solid currentColor;
  }
  
  .form-control {
    border-width: 2px;
  }
  
  .card {
    border-width: 2px;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .loading-spinner {
    animation: none;
  }
}