/* =====================================================================
   ClinicOS — Base / Reset / Typography primitives
   ===================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 2rem);
}

body {
  margin: 0;
  background: var(--c-paper);
  color: var(--c-text);
  font-family: var(--ff-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  letter-spacing: var(--ls-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

h1, h2, h3, h4, p, figure, blockquote, ul, ol, dl { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out),
              opacity var(--dur-fast) var(--ease-out);
}

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

::selection {
  background: var(--c-accent);
  color: var(--c-text-invert);
}

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: var(--sp-4);
  top: -100px;
  z-index: var(--z-top);
  padding: var(--sp-3) var(--sp-5);
  background: var(--c-ink);
  color: var(--c-text-invert);
  font-size: var(--fs-small);
  border-radius: var(--r-md);
  transition: top var(--dur-base) var(--ease-out);
}
.skip-link:focus { top: var(--sp-4); }

/* =====================================================================
   Layout primitives
   ===================================================================== */

.shell {
  width: 100%;
  max-width: var(--grid-max);
  margin-inline: auto;
  padding-inline: var(--grid-gutter);
}

.shell--narrow { max-width: calc(var(--grid-narrow) + var(--grid-gutter) * 2); }

.grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-cols), minmax(0, 1fr));
  column-gap: var(--grid-gap);
  row-gap: var(--grid-gap);
}

.section { padding-block: var(--section-y); position: relative; }
.section--tight { padding-block: var(--section-y-tight); }
.section--vast { padding-block: var(--section-y-vast); }

.section--ink {
  background: var(--c-ink);
  color: var(--c-text-invert);
}
.section--sunken { background: var(--c-paper-sunken); }

.rule {
  height: 1px;
  background: var(--c-line);
  border: 0;
  margin: 0;
}
.section--ink .rule { background: var(--c-line-invert); }

/* =====================================================================
   Typography primitives
   ===================================================================== */

.display,
.h1, .h2, .h3 {
  font-family: var(--ff-display);
  font-weight: 500;
  letter-spacing: var(--ls-display);
  text-wrap: balance;
}

.display { font-size: var(--fs-display); line-height: var(--lh-display); }
.h1 { font-size: var(--fs-h1); line-height: var(--lh-display); }
.h2 { font-size: var(--fs-h2); line-height: var(--lh-heading); }
.h3 { font-size: var(--fs-h3); line-height: var(--lh-heading); font-weight: 500; }

.lead {
  font-size: var(--fs-lead);
  line-height: 1.85;
  color: var(--c-text-soft);
  text-wrap: pretty;
}
.section--ink .lead { color: var(--c-text-invert-soft); }

.body { color: var(--c-text-soft); text-wrap: pretty; }
.section--ink .body { color: var(--c-text-invert-soft); }

.eyebrow {
  font-family: var(--ff-sans);
  font-size: var(--fs-meta);
  font-weight: 500;
  letter-spacing: var(--ls-meta);
  text-transform: uppercase;
  color: var(--c-text-mute);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}
.section--ink .eyebrow { color: var(--c-text-invert-mute); }

.measure { max-width: 46ch; }
.measure-wide { max-width: 62ch; }

/* =====================================================================
   Motion — scroll reveal
   ===================================================================== */

[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity var(--dur-reveal) var(--ease-editorial),
    transform var(--dur-reveal) var(--ease-editorial);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* Line that draws itself in */
[data-reveal-line] {
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur-slow) var(--ease-editorial);
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal-line].is-in { transform: scaleX(1); }

.no-js [data-reveal],
.no-js [data-reveal-line] { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal],
  [data-reveal-line] { opacity: 1; transform: none; }
}