/* Modern Design System with Dark/Light Mode Support */
:root {
  /* Typography */
  --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', 'Consolas', monospace;
  
  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
  --transition-bounce: 300ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
  --z-toast: 1070;
}

/* Light Theme Colors */
:root,
[data-theme="light"] {
  /* Primary Colors */
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe;
  --color-primary-200: #bfdbfe;
  --color-primary-300: #93c5fd;
  --color-primary-400: #60a5fa;
  --color-primary-500: #3b82f6;
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-900: #1e3a8a;
  --color-primary-950: #172554;
  
  /* Neutral Colors */
  --color-neutral-50: #f8fafc;
  --color-neutral-100: #f1f5f9;
  --color-neutral-200: #e2e8f0;
  --color-neutral-300: #cbd5e1;
  --color-neutral-400: #94a3b8;
  --color-neutral-500: #64748b;
  --color-neutral-600: #475569;
  --color-neutral-700: #334155;
  --color-neutral-800: #1e293b;
  --color-neutral-900: #0f172a;
  --color-neutral-950: #020617;
  
  /* Semantic Colors */
  --color-success-50: #f0fdf4;
  --color-success-500: #22c55e;
  --color-success-600: #16a34a;
  --color-success-700: #15803d;
  
  --color-warning-50: #fffbeb;
  --color-warning-500: #f59e0b;
  --color-warning-600: #d97706;
  --color-warning-700: #b45309;
  
  --color-error-50: #fef2f2;
  --color-error-500: #ef4444;
  --color-error-600: #dc2626;
  --color-error-700: #b91c1c;
  
  /* Theme Variables */
  --color-bg: var(--color-neutral-50);
  --color-bg-secondary: var(--color-neutral-100);
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-border: var(--color-neutral-200);
  --color-border-strong: var(--color-neutral-300);
  
  --color-text-primary: var(--color-neutral-900);
  --color-text-secondary: var(--color-neutral-600);
  --color-text-tertiary: var(--color-neutral-500);
  --color-text-inverse: #ffffff;
  
  --color-accent: var(--color-primary-600);
  --color-accent-hover: var(--color-primary-700);
  --color-accent-light: var(--color-primary-100);
  
  --color-success: var(--color-success-600);
  --color-warning: var(--color-warning-600);
  --color-error: var(--color-error-600);
  
  /* Glass Effect */
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* Dark Theme Colors */
[data-theme="dark"] {
  /* Primary Colors (same as light) */
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe;
  --color-primary-200: #bfdbfe;
  --color-primary-300: #93c5fd;
  --color-primary-400: #60a5fa;
  --color-primary-500: #3b82f6;
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-900: #1e3a8a;
  --color-primary-950: #172554;
  
  /* Theme Variables */
  --color-bg: var(--color-neutral-950);
  --color-bg-secondary: var(--color-neutral-900);
  --color-surface: var(--color-neutral-800);
  --color-surface-elevated: var(--color-neutral-700);
  --color-border: var(--color-neutral-700);
  --color-border-strong: var(--color-neutral-600);
  
  --color-text-primary: var(--color-neutral-100);
  --color-text-secondary: var(--color-neutral-300);
  --color-text-tertiary: var(--color-neutral-400);
  --color-text-inverse: var(--color-neutral-900);
  
  --color-accent: var(--color-primary-500);
  --color-accent-hover: var(--color-primary-400);
  --color-accent-light: var(--color-primary-900);
  
  --color-success: var(--color-success-500);
  --color-warning: var(--color-warning-500);
  --color-error: var(--color-error-500);
  
  /* Glass Effect */
  --glass-bg: rgba(15, 23, 42, 0.8);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Reset and Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Focus Management */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Selection */
::selection {
  background: var(--color-accent-light);
  color: var(--color-text-primary);
}

main {
  display: block;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: fixed;
  left: 1rem;
  top: 1rem;
  width: auto;
  height: auto;
  padding: 0.75rem 1rem;
  background: var(--color-accent);
  color: #fff;
  z-index: 1000;
  border-radius: 8px;
}

/* Header Styles */
.site-header {
  position: relative;
  padding: var(--space-2xl) 0 var(--space-xl);
  background: linear-gradient(135deg, var(--color-neutral-900) 0%, var(--color-primary-800) 50%, var(--color-primary-600) 100%);
  color: var(--color-text-inverse);
  text-align: center;
  overflow: hidden;
}

.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    rgba(15, 23, 42, 0.9) 0%, 
    rgba(30, 64, 175, 0.8) 50%, 
    rgba(37, 99, 235, 0.7) 100%);
  -webkit-backdrop-filter: blur(1px);
  backdrop-filter: blur(1px);
}

.site-header .container {
  position: relative;
  z-index: 1;
}

/* Site Navigation */
.site-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
  flex-wrap: wrap;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text-inverse);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-link:hover,
.nav-link:focus {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  color: var(--color-text-inverse);
  text-decoration: none;
}

.nav-link--all {
  background: rgba(255, 255, 255, 0.2);
  font-weight: 600;
}

.nav-link--all:hover,
.nav-link--all:focus {
  background: rgba(255, 255, 255, 0.3);
}

.site-title {
  margin: 0;
  font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.site-title a {
  color: inherit;
  text-decoration: none;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

.site-title a:hover {
  transform: scale(1.02);
  filter: brightness(1.1);
}

.site-logo {
  height: 1em;
  width: auto;
  transition: all var(--transition-normal);
}

.site-title-text {
  font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.site-tagline {
  margin: var(--space-md) 0 0;
  font-size: 1.125rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  opacity: 0.9;
}

.breadcrumbs {
  margin: var(--space-md) auto var(--space-lg);
  width: min(1200px, 95vw);
  padding: 0;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  list-style: none;
  padding: 0;
  margin: 0;
}

.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.breadcrumbs__item:not(:last-child)::after {
  content: '›';
  font-size: 1rem;
  color: var(--color-text-tertiary);
  margin-left: var(--space-xs);
}

.breadcrumbs__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.breadcrumbs__link:hover,
.breadcrumbs__link:focus {
  color: var(--color-accent);
  text-decoration: underline;
}

.breadcrumbs__current {
  font-weight: 700;
  color: var(--color-text-primary);
}

/* Main Layout */
.site-main {
  padding: var(--space-2xl) 0 var(--space-3xl);
  min-height: 60vh;
}

/* Footer Styles */
.site-footer {
  position: relative;
  padding: var(--space-2xl) 0 var(--space-xl);
  background: linear-gradient(135deg, var(--color-neutral-900) 0%, var(--color-primary-800) 50%, var(--color-primary-600) 100%);
  color: var(--color-text-inverse);
  text-align: center;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, 
    rgba(15, 23, 42, 0.9) 0%, 
    rgba(30, 64, 175, 0.8) 50%, 
    rgba(37, 99, 235, 0.7) 100%);
  -webkit-backdrop-filter: blur(1px);
  backdrop-filter: blur(1px);
}

.site-footer .container {
  position: relative;
  z-index: 1;
}

.site-footer-title {
  margin: 0;
  font-size: clamp(1.5rem, 3vw + 1rem, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.site-footer-title a {
  color: inherit;
  text-decoration: none;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

.site-footer-title a:hover {
  transform: scale(1.02);
  filter: brightness(1.1);
}

.site-footer-tagline {
  margin: var(--space-md) 0 0;
  font-size: 1rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  opacity: 0.9;
}

.site-footer-branding {
  margin: var(--space-sm) 0 var(--space-md);
  font-size: 0.9rem;
  font-weight: 500;
  color: #ffffff !important;
}

.site-footer-branding a {
  color: #ffffff !important;
  text-decoration: none;
  transition: all var(--transition-normal);
  font-weight: 600;
  border-bottom: 1px solid transparent;
}

.site-footer-branding a:hover {
  color: #ffffff !important;
  text-decoration: underline;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  border-bottom-color: rgba(255, 255, 255, 0.5);
}

.site-footer nav {
  margin-top: var(--space-lg);
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.site-footer nav a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-normal);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.site-footer nav a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
}

.container {
  width: min(1200px, 95vw);
  margin: 0 auto;
  padding: 0;
}

.layout-grid {
  display: grid;
  gap: var(--space-xl);
  align-items: start;
}

/* Theme Toggle Button */
.theme-toggle {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  z-index: var(--z-fixed);
  width: 3rem;
  height: 3rem;
  border: none;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  color: var(--color-text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: all var(--transition-normal);
  box-shadow: var(--glass-shadow);
  border: 1px solid var(--glass-border);
}

.theme-toggle:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

.theme-toggle:active {
  transform: scale(0.95);
}

.theme-toggle .icon {
  transition: transform var(--transition-bounce);
}

.theme-toggle:hover .icon {
  transform: rotate(180deg);
}

/* Card Components */
.calc-form,
.result-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.calc-form::before,
.result-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-primary-400) 100%);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.calc-form:hover,
.result-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-border-strong);
}

/* Form Styles */
.calc-form fieldset {
  border: none;
  padding: 0;
  margin: 0 0 var(--space-xl);
}

.calc-form legend {
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: var(--space-lg);
  color: var(--color-text-primary);
  letter-spacing: -0.025em;
}

.fieldset-legend {
  font-weight: 600;
  font-size: 1.125rem;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

  .form-field {
    margin-bottom: var(--space-md);
  }

.form-field label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
  letter-spacing: 0.025em;
}

.form-field label:has(input[required]),
.form-field label:has(select[required]) {
  position: relative;
}

.form-field label:has(input[required])::after,
.form-field label:has(select[required])::after {
  content: ' *';
  color: var(--color-error);
  font-weight: 700;
}

/* Modern Input Styles */
.input-prefix,
.input-suffix {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--color-bg-secondary);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 0 var(--space-md);
  transition: all var(--transition-normal);
  position: relative;
}

.input-prefix:focus-within,
.input-suffix:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
  background: var(--color-surface);
}

.input-prefix input,
.input-suffix input,
select,
textarea {
  border: none;
  background: transparent;
  flex: 1;
  padding: var(--space-md) 0;
  font-size: 1rem;
  color: var(--color-text-primary);
  font-family: inherit;
  transition: all var(--transition-fast);
}

.input-prefix input:focus,
.input-suffix input:focus,
select:focus,
textarea:focus {
  outline: none;
}

.input-prefix .prefix,
.input-suffix .suffix {
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  -webkit-user-select: none;
  user-select: none;
}

/* Select Styling */
select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 0.5rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
  cursor: pointer;
}

select:focus {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%233b82f6' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
}

/* Field Help and Error Styles */
.field-help {
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
  margin: var(--space-sm) 0 0;
  line-height: 1.4;
}

.field-error {
  font-size: 0.875rem;
  color: var(--color-error);
  margin: var(--space-sm) 0 0;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Warning icon removed - clean error styling */

/* Alert Styles */
.alert {
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  border: 1px solid;
  position: relative;
  overflow: hidden;
}

.alert::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: currentColor;
  opacity: 0.3;
}

.alert-error {
  background: var(--color-error-50);
  border-color: var(--color-error-500);
  color: var(--color-error-700);
}

.alert-error a {
  color: inherit;
  text-decoration: underline;
  font-weight: 600;
}

.alert-error a:hover {
  text-decoration: none;
}

/* Radio Group Styles */
.radio-group {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.radio-group > div {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.radio-group > div:hover {
  background: var(--color-bg-secondary);
}

.radio-group input[type="radio"] {
  width: 1.25rem;
  height: 1.25rem;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-accent);
}

.radio-group label {
  margin: 0;
  cursor: pointer;
  font-weight: 500;
  color: var(--color-text-primary);
}

/* Advanced Section */
.advanced {
  border-radius: var(--radius-lg);
  background: var(--color-bg-secondary);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  margin-top: var(--space-lg);
}

.advanced summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1.125rem;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  transition: color var(--transition-fast);
}

.advanced summary:hover {
  color: var(--color-accent);
}

.advanced summary::before {
  content: '⚙️';
  font-size: 1rem;
}

.advanced[open] summary::before {
  content: '🔧';
}

.advanced-grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Form Actions */
.form-actions {
  margin-top: var(--space-xl);
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Modern Button Styles */
.button {
  appearance: none;
  border: none;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary-500) 100%);
  color: var(--color-text-inverse);
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  min-width: 44px;
  min-height: 44px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid transparent;
}

.button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--color-accent-hover) 0%, var(--color-primary-600) 100%);
}

.button:hover::before {
  left: 100%;
}

.button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.button.secondary {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-sm);
}

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

.button.secondary::before {
  display: none;
}

/* Sample Data Button */
.sample-data-container {
  margin-bottom: var(--space-lg);
  text-align: right;
}

.sample-data-btn {
  appearance: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.sample-data-btn:hover {
  background: var(--color-border);
  color: var(--color-text-primary);
  border-color: var(--color-border-strong);
}

.sample-data-btn:active {
  transform: scale(0.98);
}

/* Consent Checkbox */
.consent {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin-top: var(--space-lg);
}

.consent input[type="checkbox"] {
  width: 1.25rem;
  height: 1.25rem;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.consent label {
  margin: 0;
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1.4;
  color: var(--color-text-secondary);
}

.sample-data-container {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.sample-data-container .auto-calc-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  margin-top: 0;
  background: none;
  border: none;
}

.sample-data-container .auto-calc-toggle input[type="checkbox"] {
  width: 1.25rem;
  height: 1.25rem;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-accent);
  flex-shrink: 0;
}

.sample-data-container .auto-calc-toggle label {
  margin: 0;
  cursor: pointer;
  font-size: 0.85rem;
  line-height: 1.3;
  color: var(--color-text-secondary);
  font-weight: 400;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.sample-data-container .auto-calc-toggle .field-help {
  display: none;
}

/* Result Card Styles */
.result-card h2 {
  margin-top: 0;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.025em;
  margin-bottom: var(--space-lg);
}

/* SEO Landing Pages */
.seo-page {
  display: grid;
  gap: var(--space-2xl);
}

.seo-hero {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.seo-keyword {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 var(--space-sm);
}

.seo-heading {
  margin: 0;
  font-size: clamp(2rem, 3vw + 1rem, 2.75rem);
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.025em;
}

.seo-subheading {
  margin: var(--space-sm) 0 var(--space-lg);
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 60ch;
}

.seo-primary-cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.seo-cta-note {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.seo-intro,
.seo-focus,
.seo-quick-tips,
.seo-faq,
.seo-related {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.seo-focus ul,
.seo-faq ul,
.seo-related ul {
  margin: 0;
  padding-left: var(--space-lg);
  display: grid;
  gap: var(--space-sm);
}

.seo-focus ul {
  list-style: disc;
}

.seo-faq ul {
  list-style: none;
  padding-left: 0;
}

.seo-faq h4 {
  margin: 0 0 var(--space-xs);
  font-size: 1.1rem;
  color: var(--color-text-primary);
}

.seo-faq p {
  margin: 0;
  color: var(--color-text-secondary);
}

.seo-quick-tips dl {
  margin: 0;
  display: grid;
  gap: var(--space-md);
}

.seo-tip {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  border: 1px solid var(--color-border);
}

.seo-tip dt {
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--color-text-primary);
}

.seo-tip dd {
  margin: 0;
  color: var(--color-text-secondary);
}

.seo-related ul {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.seo-related a {
  color: var(--color-accent);
  font-weight: 600;
  text-decoration: none;
}

.seo-related a:hover {
  text-decoration: underline;
}

.seo-directory {
  display: grid;
  gap: var(--space-xl);
}

.seo-directory__header {
  text-align: center;
  display: grid;
  gap: var(--space-sm);
}

.seo-directory__header h2 {
  margin: 0;
  font-size: clamp(2rem, 3vw + 1rem, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.seo-directory__header p {
  margin: 0 auto;
  max-width: 60ch;
  color: var(--color-text-secondary);
}

.seo-directory__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.seo-directory__item {
  margin: 0;
}

.seo-directory__link {
  display: grid;
  gap: var(--space-sm);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
  min-height: 100%;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.seo-directory__link:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.seo-directory__link h3 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.seo-directory__link p {
  margin: 0;
  color: var(--color-text-secondary);
}

.seo-directory__keyword {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
}

.seo-directory__keyword::before {
  content: '#';
}

/* Blog Index Styles */
.blog-index {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.blog-index__hero {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.blog-index__eyebrow {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary-600);
  margin-bottom: var(--space-sm);
}

.blog-index__title {
  margin-bottom: var(--space-md);
}

.blog-index__subtitle {
  color: var(--color-text-secondary);
  font-size: 1.1rem;
}

.blog-index__tags {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

.blog-index__tags h3 {
  margin-top: 0;
  margin-bottom: var(--space-md);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

.blog-index__tags ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding: 0;
  margin: 0;
  list-style: none;
}

.blog-index__tags li a {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  background: var(--color-accent-light);
  color: var(--color-primary-700);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.blog-index__tag-link:hover,
.blog-index__tag-link:focus {
  background: var(--color-accent);
  color: var(--color-text-inverse);
}

.blog-index__tag-link--active {
  background: var(--color-primary-700);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

.blog-index__filter-summary {
  margin: var(--space-xl) 0 var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-items: center;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.blog-index__filter-summary strong {
  color: var(--color-text-primary);
}

.blog-index__filter-reset {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  background: var(--color-bg-secondary);
  text-decoration: none;
  font-weight: 600;
  color: var(--color-primary-700);
  transition: all var(--transition-fast);
}

.blog-index__filter-reset:hover,
.blog-index__filter-reset:focus {
  background: var(--color-primary-600);
  color: var(--color-text-inverse);
}

.blog-index__empty {
  margin: var(--space-xl) 0;
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg-secondary);
  text-align: center;
  display: grid;
  gap: var(--space-md);
  color: var(--color-text-secondary);
}

.blog-featured {
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-700));
  color: var(--color-text-inverse);
  padding: var(--space-2xl);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  display: grid;
  gap: var(--space-xl);
}

.blog-featured__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  opacity: 0.85;
}

.blog-featured h3 {
  font-size: clamp(1.8rem, 2vw + 1rem, 2.4rem);
  margin: var(--space-sm) 0;
}

.blog-featured h3 a {
  color: inherit;
  text-decoration: none;
}

.blog-featured h3 a:hover,
.blog-featured h3 a:focus {
  text-decoration: underline;
}

.blog-featured__description {
  font-size: 1.1rem;
  max-width: 720px;
}

.blog-featured__takeaways ul {
  margin: var(--space-md) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-sm);
  list-style: none;
}

.blog-featured__takeaways li {
  position: relative;
  padding-left: var(--space-lg);
}

.blog-featured__takeaways li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--color-text-inverse);
}

.blog-featured__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
}

.blog-featured__category {
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.blog-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.blog-grid__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.blog-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.blog-card h4 {
  margin: 0;
  font-size: 1.35rem;
}

.blog-card h4 a {
  color: inherit;
  text-decoration: none;
}

.blog-card h4 a:hover,
.blog-card h4 a:focus {
  text-decoration: underline;
}

.blog-card__description {
  color: var(--color-text-secondary);
}

.blog-card__takeaways ul {
  padding-left: 1.1rem;
  margin: var(--space-sm) 0 0;
  display: grid;
  gap: var(--space-xs);
}

.blog-card__footer {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.blog-card__category {
  display: inline-flex;
  align-items: center;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary-700);
}

.blog-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.blog-card__tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.blog-card__tag:hover,
.blog-card__tag:focus {
  background: var(--color-primary-600);
  color: var(--color-text-inverse);
}

.blog-card__tag--active {
  background: var(--color-primary-700);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

/* Standardized Content Page Styles
 * 
 * This is the standard structure for all content pages to ensure consistent
 * mobile padding and responsive behavior across the application.
 * 
 * Usage:
 * <section class="container">
 *   <article class="content-page">
 *     <header class="content-page__hero">
 *       <h1 class="content-page__title">Page Title</h1>
 *       <p class="content-page__subtitle">Optional subtitle</p>
 *     </header>
 *     <div class="content-page__content prose">
 *       <!-- Main content here -->
 *     </div>
 *   </article>
 * </section>
 * 
 * The .container class provides mobile padding automatically.
 * The .content-page class provides consistent layout and spacing.
 * The .prose class provides typography styling for text content.
 */
.content-page {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
  max-width: 100%;
  margin: 0 auto;
}

.content-page__hero {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  text-align: left;
}

.content-page__eyebrow {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--color-primary-600);
  margin: 0;
}

.content-page__title {
  margin: 0;
  font-size: clamp(2rem, 3vw + 1rem, 2.75rem);
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: -0.025em;
}

.content-page__subtitle {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  margin: 0;
}

.content-page__content {
  display: block;
}

.content-page__content.prose {
  color: var(--color-text-primary);
  font-size: 1.05rem;
  line-height: 1.8;
}

.content-page__content.prose h2,
.content-page__content.prose h3,
.content-page__content.prose h4 {
  color: var(--color-text-primary);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.content-page__content.prose h2 {
  font-size: clamp(1.6rem, 2vw + 1rem, 2rem);
}

.content-page__content.prose h3 {
  font-size: clamp(1.3rem, 1.5vw + 1rem, 1.6rem);
}

.content-page__content.prose p {
  margin: 0;
  color: var(--color-text-secondary);
}

.content-page__content.prose p + p {
  margin-top: var(--space-md);
}

.content-page__content.prose ul,
.content-page__content.prose ol {
  padding-left: 1.25rem;
  margin: 0;
  display: grid;
  gap: var(--space-sm);
  color: var(--color-text-secondary);
}

.content-page__content.prose ul {
  list-style: disc;
}

.content-page__content.prose ol {
  list-style: decimal;
}

.content-page__content.prose li::marker {
  color: var(--color-primary-600);
}

.content-page__content.prose details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  background: var(--color-surface);
}

.content-page__content.prose details + details {
  margin-top: var(--space-md);
}

.content-page__content.prose summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text-primary);
}

.content-page__content.prose summary::marker {
  color: var(--color-primary-600);
}

.content-page__content.prose details[open] summary {
  margin-bottom: var(--space-sm);
}

.content-page__content.prose details p {
  margin-top: 0;
}

/* Blog Article Styles */
.blog-article {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
  max-width: 100%;
  margin: 0 auto;
}

.blog-article__hero {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  text-align: left;
}

.blog-article__eyebrow {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--color-primary-600);
}

.blog-article__subheading {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
}

.blog-article__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.blog-article__content {
  display: block;
}

.blog-article__content .lead {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

.prose {
  color: var(--color-text-primary);
  font-size: 1.05rem;
  line-height: 1.8;
}

.prose h2,
.prose h3,
.prose h4 {
  color: var(--color-text-primary);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.prose h2 {
  font-size: clamp(1.6rem, 2vw + 1rem, 2rem);
}

.prose h3 {
  font-size: clamp(1.3rem, 1.5vw + 1rem, 1.6rem);
}

.prose p {
  margin: 0;
  color: var(--color-text-secondary);
}

.prose p + p {
  margin-top: var(--space-md);
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
  margin: 0;
  display: grid;
  gap: var(--space-sm);
  color: var(--color-text-secondary);
}

.prose ul {
  list-style: disc;
}

.prose ol {
  list-style: decimal;
}

.prose li::marker {
  color: var(--color-primary-600);
}

.prose details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  background: var(--color-surface);
}

.prose details + details {
  margin-top: var(--space-md);
}

.prose summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text-primary);
}

.prose summary::marker {
  color: var(--color-primary-600);
}

.prose details[open] summary {
  margin-bottom: var(--space-sm);
}

.prose details p {
  margin-top: 0;
}

.blog-article__related {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-xl);
  display: grid;
  gap: var(--space-lg);
}

.blog-article__related-list {
  display: grid;
  gap: var(--space-lg);
}

.blog-article__related-meta {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

@media (max-width: 720px) {
  .container {
    padding: 0 var(--space-xs);
  }

  .blog-featured {
    padding: var(--space-sm);
  }

  .blog-card {
    padding: var(--space-sm);
  }

  .blog-index__tags {
    padding: var(--space-sm);
  }

  .blog-article {
    padding: 0 var(--space-xs);
  }

  .content-page {
    padding: 0 var(--space-xs);
  }

  .result-placeholder {
    padding-left: var(--space-xs);
    padding-right: var(--space-xs);
  }
}

@media (max-width: 720px) {
  .breadcrumbs {
    padding: 0 var(--space-xs);
  }
}

@media (max-width: 768px) {
  .seo-directory__link {
    padding: var(--space-sm);
  }
}

@media (max-width: 768px) {
  .seo-hero,
  .seo-intro,
  .seo-focus,
  .seo-quick-tips,
  .seo-faq,
  .seo-related {
    padding: var(--space-sm);
  }

  .seo-heading {
    font-size: 2.125rem;
  }
}

.result-total {
  margin: 0;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary-500) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  letter-spacing: -0.05em;
}

.result-subtitle {
  color: var(--color-text-secondary);
  margin: var(--space-sm) 0 var(--space-xl);
  font-size: 1.125rem;
  font-weight: 500;
}

.result-breakdown {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin: 0 0 var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.result-breakdown dt {
  color: var(--color-text-tertiary);
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xs);
}

.result-breakdown dd {
  margin: 0;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text-primary);
}

.result-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.result-actions .button {
  width: 100%;
  justify-content: center;
  margin-bottom: var(--space-sm);
}

/* Footer Styles */
.site-footer {
  padding: var(--space-2xl) 0;
  text-align: center;
  color: var(--color-text-tertiary);
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-3xl);
}

.site-footer nav {
  display: inline-flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
}

.site-footer a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.site-footer a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* Table Styles */
.table-wrapper {
  margin-top: var(--space-xl);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.schedule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.schedule-table th,
.schedule-table td {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  text-align: right;
  transition: background-color var(--transition-fast);
}

.schedule-table th {
  background: var(--color-bg-secondary);
  font-weight: 600;
  color: var(--color-text-primary);
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.schedule-table td {
  color: var(--color-text-secondary);
}

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

.schedule-table th:first-child,
.schedule-table td:first-child {
  text-align: left;
}

.schedule-summary {
  display: grid;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.schedule-summary div {
  background: var(--color-surface);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-fast);
}

.schedule-summary div:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.legal {
  background: var(--color-surface);
  padding: var(--space-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  margin-top: var(--space-xl);
  border: 1px solid var(--color-border);
}

.results {
  position: sticky;
  top: var(--space-lg);
}

.sr-only {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  top: auto;
  overflow: hidden;
}

/* Accessibility and Motion Preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .button::before {
    display: none;
  }
}

/* Mobile Results - Clean Inline Design */
@media (max-width: 1023px) {
  /* Reset results to normal flow */
  .results {
    position: static;
    margin-top: var(--space-xl);
  }

  /* Clean inline card design */
  .result-card {
    position: static;
    transform: none;
    max-height: none;
    overflow: visible;
    display: block;
    visibility: visible;
    margin: 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    padding: var(--space-xs);
  }

  /* Remove modal-specific styles */
  .result-card::before {
    display: none;
  }

  /* Mobile header - now just a clean title */
  .result-header {
    display: none; /* Hide the mobile header completely */
  }

  /* Content area - always visible */
  .result-content {
    padding: 0;
    max-height: none;
    overflow: visible;
    background: transparent;
    display: block;
  }

  /* Mobile-specific result styling */
  .result-card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    text-align: center;
  }

  .result-total {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary-500) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    letter-spacing: -0.02em;
    text-align: center;
    margin-bottom: var(--space-lg);
  }

  .result-subtitle {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    text-align: center;
  }

  .result-breakdown {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    padding: var(--space-sm);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
  }

  .result-breakdown dt {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  .result-breakdown dd {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text-primary);
  }

  .result-meta {
    background: var(--color-bg-secondary);
    padding: var(--space-sm);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    margin-bottom: var(--space-md);
  }

  .result-meta p {
    margin: 0 0 var(--space-sm) 0;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
  }

  .result-meta strong {
    color: var(--color-text-primary);
    font-weight: 700;
  }

  .result-actions {
    margin-top: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
  }

  .result-actions .button {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
    font-weight: 600;
    justify-content: center;
  }

  /* Hide desktop-only elements on mobile */
  .desktop-only {
    display: none;
  }

  /* Remove bottom padding since we're not using fixed modal */
  .site-main {
    padding-bottom: var(--space-3xl);
  }

  /* Reduce form field spacing on mobile */
  .form-field {
    margin-bottom: var(--space-md);
  }

  .calc-form fieldset {
    margin-bottom: var(--space-lg);
  }

  .calc-form legend {
    margin-bottom: var(--space-md);
  }
}

/* Responsive Design */
@media (min-width: 1024px) {
  .layout-grid {
    grid-template-columns: 1fr minmax(320px, 400px);
    gap: var(--space-2xl);
  }

  .result-actions {
    flex-direction: column;
    gap: var(--space-md);
  }

  .result-actions .button {
    width: 100%;
    justify-content: center;
  }

  .schedule-summary {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  
  .advanced-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Reset mobile styles for desktop */
  .result-card {
    position: static;
    max-height: none;
    overflow: visible;
  }

  /* Remove the blue gradient line on desktop */
  .result-card::before,
  .calc-form::before {
    display: none;
  }

  .result-header {
    display: none;
  }

  .result-content {
    display: block;
    max-height: none;
    overflow: visible;
    padding: 0;
  }

  .site-main {
    padding-bottom: var(--space-3xl);
  }

  /* Show desktop-only elements on desktop */
  .desktop-only {
    display: block;
  }

  /* Hide mobile header on desktop */
  .result-header {
    display: none;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0;
    width: 100%;
  }

  .calc-form {
    margin: 0;
    border-radius: 0;
    border-left: none;
    border-right: none;
    padding: var(--space-xs);
  }

  /* Minimal padding for all content cards on mobile */
  .seo-page,
  .blog-index,
  .blog-article,
  .content-page,
  .schedule-page {
    padding: var(--space-xs);
  }

  /* Reduce padding for all card components */
  .seo-hero,
  .seo-intro,
  .seo-focus,
  .seo-quick-tips,
  .seo-faq,
  .seo-related,
  .blog-featured,
  .blog-card,
  .blog-index__tags,
  .schedule-summary div,
  .legal {
    padding: var(--space-sm);
  }

  /* Reduce table wrapper padding */
  .table-wrapper {
    padding: var(--space-sm);
  }
  
  .site-header {
    padding: var(--space-xl) 0 var(--space-lg);
  }
  
  .site-title {
    font-size: clamp(1.75rem, 6vw + 1rem, 2.5rem);
  }

  .site-nav {
    gap: var(--space-sm);
    margin-top: var(--space-md);
  }

  .nav-link {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.85rem;
  }

  .site-logo {
    height: 1em;
  }

  .site-title a {
    gap: var(--space-sm);
  }

  .site-footer {
    padding: var(--space-xl) 0 var(--space-lg);
  }
  
  .site-footer-title {
    font-size: clamp(1.25rem, 4vw + 1rem, 2rem);
  }

  .site-footer nav {
    gap: var(--space-md);
  }

  .site-footer nav a {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.9rem;
  }
  
  .theme-toggle {
    top: var(--space-md);
    right: var(--space-md);
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1rem;
  }
}

@media (max-width: 640px) {
  .results {
    position: static;
  }

  .radio-group {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .result-actions {
    width: 100%;
  }

  .button,
  .button.secondary {
    width: 100%;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .advanced-grid {
    grid-template-columns: 1fr;
  }
  
  .schedule-summary {
    grid-template-columns: 1fr;
  }
  
  .result-breakdown {
    grid-template-columns: 1fr;
  }

  /* Even more minimal padding for very small screens */
  .container {
    padding: 0 var(--space-xs);
  }

  .calc-form,
  .result-card,
  .seo-hero,
  .seo-intro,
  .seo-focus,
  .seo-quick-tips,
  .seo-faq,
  .seo-related,
  .blog-featured,
  .blog-card,
  .blog-index__tags,
  .schedule-summary div,
  .legal,
  .table-wrapper {
    padding: var(--space-xs);
  }
}

/* Dark mode specific adjustments */
[data-theme="dark"] .site-header {
  background: linear-gradient(135deg, var(--color-neutral-950) 0%, var(--color-primary-900) 50%, var(--color-primary-700) 100%);
}

/* Dark mode blog tag styling */
[data-theme="dark"] .blog-index__tags li a {
  color: #ffffff;
}

[data-theme="dark"] .blog-index__tags li a:hover,
[data-theme="dark"] .blog-index__tags li a:focus {
  background: var(--color-accent);
  color: #ffffff;
}

[data-theme="dark"] .blog-index__tag-link--active {
  background: var(--color-primary-700);
  color: #ffffff;
}

/* Dark mode blog card tag styling */
[data-theme="dark"] .blog-card__tag {
  color: #ffffff;
}

[data-theme="dark"] .blog-card__tag:hover,
[data-theme="dark"] .blog-card__tag:focus {
  background: var(--color-primary-600);
  color: #ffffff;
}

[data-theme="dark"] .blog-card__tag--active {
  background: var(--color-primary-700);
  color: #ffffff;
}

[data-theme="dark"] .site-header::before {
  background: linear-gradient(135deg, 
    rgba(2, 6, 23, 0.95) 0%, 
    rgba(30, 58, 138, 0.9) 50%, 
    rgba(29, 78, 216, 0.8) 100%);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-border: var(--color-text-primary);
    --color-border-strong: var(--color-text-primary);
  }
  
  .button {
    border: 2px solid var(--color-text-primary);
  }
}