/* ============================================================
   Base — reset, tipografia de corpo, foco e utilitários
   ============================================================ */

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

* { margin: 0; padding: 0; }

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    /* Âncoras não podem parar embaixo do header fixo. */
    scroll-padding-top: calc(var(--header-h) + var(--space-6));
}

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

body {
    min-height: 100svh;
    font-family: var(--font-support);
    font-size: var(--fs-md);
    line-height: 1.6;
    color: var(--ink);
    background: var(--paper);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-synthesis: none;
    /* clip e não hidden: hidden cria um contêiner de rolagem e mata o
       position: sticky de tudo que está dentro do body. */
    overflow-x: clip;
}

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

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

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

a { color: inherit; text-decoration: none; }

ul[role="list"], ol[role="list"] { list-style: none; }

h1, h2, h3, h4 { line-height: 1.05; text-wrap: balance; }
p, li { overflow-wrap: break-word; text-wrap: pretty; }

strong, b { font-weight: 700; }

::selection { background: var(--brand); color: #FFFFFF; }

:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 3px;
    border-radius: 6px;
}

/* Toque: o atraso de 300ms e o flash cinza do iOS não combinam com pílula. */
a, button { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }

/* ── Utilitários ─────────────────────────────────────────── */

.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: fixed;
    top: var(--space-3);
    left: var(--space-3);
    z-index: calc(var(--z-overlay) + 1);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-pill);
    background: var(--ink);
    color: #FFFFFF;
    font-weight: 600;
    transform: translateY(-160%);
    transition: transform var(--dur-base) var(--ease-apple);
}
.skip-link:focus-visible { transform: none; }

/* ── Entrada ao rolar (utils/reveal.js marca .is-visible) ── */

[data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition:
        opacity   var(--dur-slower) var(--ease-out-expo),
        transform var(--dur-slower) var(--ease-out-expo);
    transition-delay: calc(var(--reveal-i, 0) * 90ms);
}
[data-reveal].is-visible { opacity: 1; transform: none; }

/* Sem JS a página precisa aparecer inteira — o layout marca <html class="js">. */
html:not(.js) [data-reveal] { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    [data-reveal] { opacity: 1; transform: none; }
}