:root {
  --color-primary: #7B1E2E;
  --color-primary-dark: #4E0D19;
  --color-primary-light: #F8F0F2;
  --color-accent: #B8935A;
  --color-accent-light: #F5EFE6;
  --color-bg: #FAF6F7;
  --color-surface: #FFFFFF;
  --color-text: #1C0A0E;
  --color-text-muted: #7A5A60;
  --color-border: #E2D0D4;
  --color-bot-bubble: #F8F0F2;
  --color-user-bubble: #7B1E2E;
  --color-user-text: #FFFFFF;
  --color-error: #C0392B;
  --color-success: #2E7D32;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(78, 13, 25, 0.08);
  --shadow-md: 0 4px 16px rgba(78, 13, 25, 0.14);
  --shadow-lg: 0 8px 40px rgba(78, 13, 25, 0.22);
  --font-heading: Georgia, 'Times New Roman', 'Palatino Linotype', serif;
  --font-base: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-size-sm: 0.8125rem;
  --font-size-base: 0.9375rem;
  --font-size-lg: 1.0625rem;
  --transition: 0.2s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.55;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

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