/* ==========================================================================
   Lumina Dermatology — Base / Reset / Typography
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 112px; /* clears the fixed header on in-page anchor jumps */
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, picture, video, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

ul, ol { margin: 0; padding: 0; list-style: none; }

button, input, textarea, select { font: inherit; color: inherit; }

button { background: none; border: none; padding: 0; cursor: pointer; }

h1, h2, h3, h4, p, figure { margin: 0; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: var(--lh-heading);
  color: var(--color-ink);
  text-wrap: balance;
}

p { text-wrap: pretty; }

/* ---- Focus visibility (WCAG) ---- */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---- Selection ---- */
::selection { background: var(--color-clay-light); color: var(--color-clay-dark); }

/* ---- Skip link ---- */
.skip-link {
  position: fixed;
  top: -100px;
  left: var(--space-5);
  z-index: 1000;
  background: var(--color-ink);
  color: var(--color-ink-invert);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  transition: top var(--dur-base) var(--ease-out-expo);
}
.skip-link:focus { top: var(--space-5); }

/* ---- Reduced motion: global guarantee ---- */
@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;
  }
}

/* ---- Type scale utility classes ---- */
.type-eyebrow {
  font-family: var(--font-body);
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--color-clay);
}
.type-display {
  font-size: var(--fs-display);
  letter-spacing: var(--tracking-tight);
  line-height: var(--lh-tight);
}
.type-h1 { font-size: var(--fs-h1); letter-spacing: var(--tracking-tight); }
.type-h2 { font-size: var(--fs-h2); letter-spacing: var(--tracking-tight); }
.type-h3 { font-size: var(--fs-h3); }
.type-lead {
  font-family: var(--font-body);
  font-size: var(--fs-lead);
  font-weight: 400;
  color: var(--color-ink-soft);
  line-height: 1.55;
}
.type-small { font-size: var(--fs-small); color: var(--color-ink-soft); }

.text-invert { color: var(--color-ink-invert); }
.text-invert .type-lead, .text-invert.type-lead { color: var(--color-ink-invert-soft); }