:root {
  --walnut-50: #F5F2ED;
  --walnut-100: #E8E0D5;
  --walnut-200: #D4C6B0;
  --walnut-300: #C0AC8B;
  --walnut-400: #B0976C;
  --walnut-500: #9C824D;
  --walnut-600: #8A7040;
  --walnut-700: #785E33;
  --walnut-800: #664C26;
  --walnut-900: #543A19;
  
  --brand: #5C4A3A;
  --bg: #F7F6F3;
  --bg-alt: #EFEEE9;
  --dark: #2C2C2C;
  --light: #8A8A8A;
  
  --gold-100: #FEF3C7;
  --gold-500: #F59E0B;
  --sage-100: #ECFDF5;
  --sage-500: #10B981;
  
  --neutral-50: #FAFAFA;
  --neutral-100: #F5F5F5;
  --neutral-200: #E5E5E5;
  --neutral-300: #D4D4D4;
  --neutral-400: #A3A3A3;
  --neutral-500: #737373;
  --neutral-600: #525252;
  --neutral-700: #404040;
  --neutral-800: #262626;
  --neutral-900: #171717;
  
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --info: #3B82F6;
  
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-spring: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  --transition-fast: 150ms;
  --transition-base: 200ms;
  --transition-slow: 300ms;
  --transition-slower: 500ms;
  
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

[data-theme="dark"],
body.dark-mode {
  --walnut-50: #171717;
  --walnut-100: #262626;
  --walnut-200: #404040;
  --walnut-300: #525252;
  --walnut-400: #737373;
  --walnut-500: #D4B896;
  --walnut-600: #E8D5BC;
  --walnut-700: #F5E9D8;
  --walnut-800: #FAF5ED;
  --walnut-900: #FDFAF5;
  
  --neutral-50: #0A0A0A;
  --neutral-100: #171717;
  --neutral-200: #262626;
  --neutral-300: #404040;
  --neutral-400: #525252;
  --neutral-500: #737373;
  --neutral-600: #A3A3A3;
  --neutral-700: #D4D4D4;
  --neutral-800: #E5E5E5;
  --neutral-900: #F5F5F5;
  
  --brand: var(--walnut-500);
  --bg: #0F0F0F;
  --bg-alt: #1A1A1A;
  --dark: #F0F0F0;
  --light: #A0A0A0;
  
  color-scheme: dark;
}

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

.focus-visible {
  outline: 2px solid var(--walnut-500);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

*:focus-visible {
  outline: 2px solid var(--walnut-500);
  outline-offset: 2px;
}

@media (prefers-contrast: high) {
  :root {
    --walnut-500: #000000;
    --neutral-300: #000000;
  }
  
  [data-theme="dark"] {
    --walnut-500: #FFFFFF;
    --neutral-300: #FFFFFF;
  }
}

@media (prefers-reduced-transparency: reduce) {
  * {
    opacity: 1 !important;
  }
  
  header {
    backdrop-filter: none !important;
    background: rgba(247, 246, 243, 1) !important;
  }
  
  body.dark-mode header {
    background: rgba(26, 26, 26, 1) !important;
  }
}

@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;
  }
}

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

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s var(--ease-out);
}

.animate-slide-up {
  animation: slideUp 0.8s var(--ease-out);
}

.animate-slide-down {
  animation: slideDown 0.8s var(--ease-out);
}

.animate-scale-in {
  animation: scaleIn 0.5s var(--ease-spring);
}

.animate-spin {
  animation: spin 1s linear infinite;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.container {
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .container {
    max-width: 640px;
  }
}

@media (min-width: 768px) {
  .container {
    max-width: 768px;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 1024px;
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: 1280px;
  }
}

@media (min-width: 1536px) {
  .container {
    max-width: 1536px;
  }
}

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 {
  grid-template-columns: repeat(1, 1fr);
}

@media (min-width: 768px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.grid--3 {
  grid-template-columns: repeat(1, 1fr);
}

@media (min-width: 768px) {
  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.grid--4 {
  grid-template-columns: repeat(1, 1fr);
}

@media (min-width: 640px) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}