/* ==========================================================================
   Pace — reset, typography, layout primitives
   ========================================================================== */

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

* {
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    /* Sticky header clearance for in-page anchors */
    scroll-padding-top: 6rem;
}

body {
    background: var(--paper);
    color: var(--ink);
    font-family: var(--font);
    font-size: var(--text-md);
    font-weight: var(--weight-regular);
    line-height: var(--leading-body);
    letter-spacing: var(--tracking-snug);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: 'cv11' 1, 'ss01' 1;
    overflow-x: hidden;
}

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

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

::selection {
    background: var(--ink);
    color: var(--paper);
}

/* --------------------------------------------------------------------------
   Typography
   Sentence case, medium weight, tight tracking. No caps, no gradient fills.
   -------------------------------------------------------------------------- */

h1,
h2,
h3,
h4 {
    font-weight: var(--weight-semi);
    letter-spacing: var(--tracking-tight);
    line-height: var(--leading-tight);
    text-wrap: balance;
}

h1 {
    font-size: var(--size-h1);
}

h2 {
    font-size: var(--size-h2);
    line-height: 1.12;
}

h3 {
    font-size: var(--size-h3);
    line-height: var(--leading-snug);
    letter-spacing: var(--tracking-snug);
}

h4 {
    font-size: var(--text-md);
    letter-spacing: var(--tracking-snug);
    line-height: var(--leading-snug);
}

p {
    text-wrap: pretty;
}

a {
    color: inherit;
    text-decoration-color: var(--rule-strong);
    text-underline-offset: 0.2em;
}

strong {
    font-weight: var(--weight-semi);
    color: var(--ink);
}

/* Numerals never jitter or shift width */
.tabular,
.stat-value,
[data-count] {
    font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   Layout primitives
   -------------------------------------------------------------------------- */

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

.container--narrow {
    max-width: var(--container-narrow);
}

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

.section--tight {
    padding-block: calc(var(--section-y) * 0.6);
}

.section--sunken {
    background: var(--paper-sunken);
}

.section--ruled {
    border-top: 1px solid var(--rule);
}

/* Section intro: a small label, a heading, and one line of lead copy */
.section-head {
    max-width: 40rem;
    margin-bottom: var(--space-9);
}

.section-lead {
    margin-top: var(--space-4);
    font-size: var(--text-lg);
    line-height: var(--leading-body);
    color: var(--ink-2);
    letter-spacing: var(--tracking-snug);
}

/* Small caps label — used at most once per section, never as decoration */
.label {
    display: block;
    font-size: var(--text-xs);
    font-weight: var(--weight-semi);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--ink-3);
    margin-bottom: var(--space-4);
}

.lead {
    font-size: var(--text-lg);
    color: var(--ink-2);
    line-height: var(--leading-body);
}

.muted {
    color: var(--ink-2);
}

.rule {
    height: 1px;
    background: var(--rule);
    border: 0;
}

/* Screen-reader only, and visible again on keyboard focus */
.visually-hidden {
    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;
    top: var(--space-4);
    left: var(--space-4);
    z-index: 200;
    padding: var(--space-3) var(--space-5);
    background: var(--ink);
    color: var(--paper);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    transform: translateY(-200%);
    transition: transform var(--duration-fast) var(--ease);
}

.skip-link:focus-visible {
    transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Focus
   -------------------------------------------------------------------------- */

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

/* --------------------------------------------------------------------------
   Motion
   The entire budget: fade in with a small rise, once, on scroll into view.
   -------------------------------------------------------------------------- */

[data-reveal] {
    opacity: 0;
    transform: translateY(8px);
    transition:
        opacity var(--duration) var(--ease),
        transform var(--duration) var(--ease);
    transition-delay: var(--reveal-delay, 0ms);
}

[data-reveal].is-revealed {
    opacity: 1;
    transform: none;
}

/* When scripting is off, a <noscript> block in each page resets the above so
   content can never stay invisible. */

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    [data-reveal] {
        opacity: 1;
        transform: none;
    }
}