/* ==========================================================================
   Taws.Design: base
   --------------------------------------------------------------------------
   Reset, element defaults, typography, focus and utility classes.
   Depends on tokens.css.
   ========================================================================== */

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: var(--space-6);
}

/* Push the target of an in-page link a little further down, so it isn't
   pressed against the top edge */
:target {
  scroll-margin-top: var(--space-4);
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  letter-spacing: var(--tracking-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  flex: 1 0 auto;
}

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

img {
  height: auto;
}

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

button {
  cursor: pointer;
}

p,
li,
h1,
h2,
h3,
h4,
figcaption {
  overflow-wrap: break-word;
}

/* ---- Typography -------------------------------------------------------- */
h1,
h2,
h3,
h4 {
  color: var(--color-heading);
  text-wrap: balance;
}

h1,
.h1 {
  font-size: var(--text-h1);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-display);
}

h2,
.h2 {
  font-size: var(--text-h2);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-heading);
}

h3,
.h3 {
  font-size: var(--text-h3);
  font-weight: var(--weight-medium);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-heading);
}

h4,
.h4 {
  font-size: var(--text-lead);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-body);
}

p {
  text-wrap: pretty;
}

.lead {
  font-size: var(--text-lead);
  font-weight: var(--weight-medium);
  line-height: var(--leading-normal);
  letter-spacing: var(--tracking-body);
}

.text-muted {
  color: var(--color-text-muted);
}

.text-sm {
  font-size: var(--text-sm);
}

strong,
b {
  font-weight: var(--weight-bold);
}

/* ---- Links ------------------------------------------------------------- */
a {
  color: var(--color-link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 2px;
}

/* ---- Focus: one clear, consistent ring everywhere (2.4.7, 2.4.11, 2.4.13)  */
:focus-visible {
  outline: var(--focus-width) solid var(--color-focus);
  outline-offset: var(--focus-offset);
  border-radius: 2px;
}

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

/* On dark surfaces, flip to the light ring */
.on-dark :focus-visible,
.on-dark:focus-visible {
  outline-color: var(--color-focus-inverse);
}

/* Programmatic focus targets (e.g. skip link destination, error summary) */
[tabindex="-1"]:focus {
  outline: none;
}

[tabindex="-1"]:focus-visible {
  outline: var(--focus-width) solid var(--color-focus);
}

/* ---- Selection --------------------------------------------------------- */
::selection {
  background-color: var(--navy-900);
  color: var(--white);
}

/* ---- Utilities --------------------------------------------------------- */

/* Hide visually, keep for assistive tech */
.visually-hidden:not(:focus):not(:active) {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Centred, padded page container */
.container {
  width: min(100% - (var(--gutter) * 2), var(--container-max));
  margin-inline: auto;
}

.container--narrow {
  width: min(100% - (var(--gutter) * 2), var(--container-narrow));
}

/* Vertical rhythm: consistent space between siblings */
.flow > * + * {
  margin-block-start: var(--flow-space, 1em);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--stack-gap, var(--space-4));
}

ul.cluster,
ul.stack {
  padding: 0;
  list-style: none;
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--cluster-gap, var(--space-4));
}

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

.section--tight-top {
  padding-block-start: var(--space-6);
}

/* ---- Motion preferences (2.3.3) ---------------------------------------- */
@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;
  }
}