/* Reset and element defaults, after Vibe's `@layer base` plus Tailwind's preflight. */

*,
*::before,
*::after {
  box-sizing: border-box;
  border-color: var(--border);
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background-color: var(--background);
  color: var(--foreground);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: none;
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
dd,
figure,
blockquote {
  margin: 0;
}

ul[role='list'],
ol[role='list'] {
  list-style: none;
  padding: 0;
}

a {
  color: var(--primary);
  text-decoration: none;
  text-underline-offset: 4px;
}

a:hover {
  text-decoration: underline;
}

/* Links inside running text must not rely on colour alone (WCAG 1.4.1). */
p a:not(.btn),
li a:not(.btn),
.notice a {
  text-decoration: underline;
}

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

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

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

button:disabled {
  cursor: not-allowed;
}

textarea {
  resize: none;
}

code,
kbd,
samp {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 0;
}

[hidden] {
  display: none !important;
}

:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}

/* Headings and the main area take focus from script when a screen changes; no ring for that. */
[tabindex="-1"]:focus {
  outline: none;
}

::selection {
  background: var(--primary);
  color: var(--primary-foreground);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  z-index: 100;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  background: var(--elevated);
  border: 1px solid var(--border);
  color: var(--foreground);
}

.skip-link:focus {
  top: 0.75rem;
}

/* Thin scrollbars that match the surface (Vibe's .scrollbar-thin). */
.scrollbar-thin {
  scrollbar-width: thin;
  scrollbar-color: color-mix(in oklch, var(--foreground) 18%, transparent) transparent;
}

.scrollbar-thin::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.scrollbar-thin::-webkit-scrollbar-thumb {
  background-color: color-mix(in oklch, var(--foreground) 18%, transparent);
  border-radius: 999px;
}

.scrollbar-thin::-webkit-scrollbar-track {
  background: transparent;
}

@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;
  }
}