:root {
  --color-page-background: #f4edd8;
  --color-text-primary: #2d261e;
  --color-text-secondary: #5a4f41;
  --color-text-accent: #8e1c1c;
  
  --color-success: #2c7247;
  --color-success-background: rgba(44, 114, 71, 0.1);
  --color-success-border: rgba(44, 114, 71, 0.4);
  
  --color-error: #aa3333;
  --color-error-background: rgba(170, 51, 51, 0.08);
  --color-error-border: rgba(170, 51, 51, 0.3);
  
  --color-spine-dark: #120b05;
  --color-spine-light: rgba(244, 237, 216, 0.15);
  
  --shadow-ambient: 0 4% 8% rgba(0, 0, 0, 0.4);
  --shadow-page-crease-left: linear-gradient(to right, rgba(0, 0, 0, 0) 80%, rgba(0, 0, 0, 0.25) 100%);
  --shadow-page-crease-right: linear-gradient(to left, rgba(0, 0, 0, 0) 80%, rgba(0, 0, 0, 0.25) 100%);
  
  --timing-page-turn: 1.5s;
  --easing-page-turn: cubic-bezier(0.645, 0.045, 0.355, 1);
  
  --font-family-title: "Playfair Display", Georgia, serif;
  --font-family-body: "Nunito", sans-serif;
  --font-family-ui: "Nunito", sans-serif;
  
  --book-width: 82%;
  --book-height: 86%;
  --page-width: 50%;
  --page-height: 100%;
}