/*
 * Epistola Design System — Base Layer
 *
 * Box-sizing reset, element defaults, and global focus-visible ring.
 * Keep this minimal — only universal resets belong here.
 */

@layer base {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
  }

  body {
    margin: 0;
    font-family: var(--ep-font-sans);
    font-size: var(--ep-text-base);
    line-height: var(--ep-leading-normal);
    color: var(--ep-foreground);
    background-color: var(--ep-background);
  }

  /* Selection highlight */
  ::selection {
    background-color: var(--ep-blue-200);
    color: var(--ep-blue-900);
  }

  /* Global focus-visible ring */
  :focus-visible {
    outline: none;
    box-shadow: var(--ep-ring);
  }

  :focus:not(:focus-visible) {
    outline: none;
    box-shadow: none;
  }

  /* Button resets */
  button {
    cursor: pointer;
    font: inherit;
    background: none;
    border: none;
    padding: 0;
    margin: 0;
  }

  /* Form control resets */
  input,
  select,
  textarea {
    font: inherit;
  }

  /* Headings */
  h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: var(--ep-tracking-tight);
    line-height: var(--ep-leading-tight);
    color: var(--ep-foreground);
    margin: 0;
  }

  h1 { font-size: var(--ep-text-3xl); }
  h2 { font-size: var(--ep-text-2xl); }
  h3 { font-size: var(--ep-text-xl); }
  h4 { font-size: var(--ep-text-lg); }

  /* Links */
  a {
    color: var(--ep-primary);
    text-decoration: none;

    &:hover {
      text-decoration: underline;
    }
  }

  /* Separator */
  hr {
    border: none;
    border-top: 1px solid var(--ep-border-color);
    margin: var(--ep-space-4) 0;
  }

  /* Inline code */
  code {
    font-family: var(--ep-font-mono);
    font-size: 0.875em;
    background-color: var(--ep-muted);
    padding: 0.125em 0.375em;
    border-radius: var(--ep-radius-sm);
  }

  /* Paragraph spacing */
  p {
    margin: 0 0 var(--ep-space-4) 0;

    &:last-child {
      margin-bottom: 0;
    }
  }
}