/* =========================================================
  BASE STYLES — Semantic tokens only
========================================================= */

* { box-sizing: border-box; }
html:focus-within { scroll-behavior: smooth; }
body { margin: 0; }

body {
  font-family: var(--font-family-body);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
  font-weight: var(--font-weight-body);
  color: var(--color-text-primary);
  background: var(--color-page-background);
}

/* Layout primitives */
.container {
  max-width: var(--layout-container-max-width);
  margin-inline: auto;
  padding-inline: var(--layout-container-inline-padding);
}

.section {
  padding-block: var(--spacing-section-vertical);
}

/* Type */
h1, h2, h3 {
  margin: 0;
  color: var(--color-text-heading);
  line-height: var(--line-height-heading);
  font-weight: var(--font-weight-heading);
}

h1 { font-size: var(--font-size-heading-1); }
h2 { font-size: var(--font-size-heading-2); }
h3 { font-size: var(--font-size-heading-3); }

p { margin: 0; color: var(--color-text-primary); }

a { color: var(--color-link-default); text-underline-offset: 0.18em; }
a:hover { color: var(--color-link-hover); }

/* Rhythm helper */
.stack > * + * { margin-top: var(--spacing-stack-normal); }

/* Card primitive */
.card {
  background: var(--color-card-background);
  border: var(--border-width-thin) solid var(--color-card-border);
  border-radius: var(--radius-component);
  box-shadow: var(--shadow-card);
  padding: var(--space-32);
}

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  padding: var(--space-12) var(--space-20);
  border-radius: var(--radius-pill);
  border: var(--border-width-thin) solid transparent;
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  cursor: pointer;
  transition:
    transform var(--motion-duration-medium) var(--motion-easing-standard),
    background var(--motion-duration-medium) var(--motion-easing-standard),
    color var(--motion-duration-medium) var(--motion-easing-standard),
    border-color var(--motion-duration-medium) var(--motion-easing-standard);
}

.button:active { transform: translateY(1px); }

.button-primary {
  background: var(--color-button-primary-background);
  color: var(--color-button-primary-text);
}


.button-primary:hover {
  background: var(--color-button-primary-background-hover);
  color: var(--color-button-primary-text);
  
}

.button-secondary {
  background: var(--color-button-secondary-background);
  color: var(--color-button-secondary-text);
  border-color: var(--color-button-secondary-border);
}

.button-secondary:hover {
  background: var(--color-button-secondary-background-hover);
}

/* Forms */
label { display: block; margin-bottom: var(--space-8); font-weight: var(--font-weight-medium); }

input, textarea {
  width: 100%;
  font: inherit;
  color: var(--color-input-text);
  background: var(--color-input-background);
  border: var(--border-width-thin) solid var(--color-input-border);
  border-radius: var(--radius-input);
  padding: var(--space-12) var(--space-16);
}

input:focus, textarea:focus {
  outline: none;
  box-shadow: var(--focus-ring);
}
html {
  scroll-behavior: smooth;
}

/* Default fallback; JS will overwrite this with real header height */
:root {
  --scroll-offset: 80px;
}

/* Every anchor target lands below the sticky header */
main section[id] {
  scroll-margin-top: calc(var(--scroll-offset) + var(--space-16));
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html:focus-within { scroll-behavior: auto; }
  .button { transition: none; }
}