/* ==========================================================================
   base.css — reset, tipografia base, layout e utilitários
   ========================================================================== */

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.5;
    min-height: 100vh;
    transition: background-color .3s ease, color .3s ease;
}

input, button, select, textarea { font-family: inherit; }
a { color: inherit; }
img { max-width: 100%; display: block; }
::selection { background: var(--accent); color: #fff; }

h1, h2, h3, p { margin: 0; }

/* ---- layout ---- */
.container {
    width: min(100% - 2 * var(--gutter), var(--container));
    margin-inline: auto;
}
.container--narrow { --container: var(--container-narrow); }

.section { padding: var(--space-section) 0; }
.section--bordered { border-bottom: 1px solid var(--line); }

/* ---- rótulos mono / eyebrows ---- */
.eyebrow {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--faint);
    margin: 0;
}
.mono { font-family: var(--mono); }

/* ---- títulos ---- */
.display {
    font-size: clamp(40px, 7vw, 74px);
    line-height: 1.0;
    letter-spacing: -.035em;
    font-weight: 600;
}
.h-lead {
    font-size: clamp(34px, 5vw, 50px);
    line-height: 1.02;
    letter-spacing: -.03em;
    font-weight: 600;
}

/* ---- reveal on scroll (JS adiciona .is-in) ---- */
[data-reveal] {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity .6s ease, transform .6s ease;
}
[data-reveal].is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
    [data-reveal] { opacity: 1; transform: none; transition: none; }
    html { scroll-behavior: auto; }
}

/* ---- acessibilidade ---- */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.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: -999px; top: 8px; z-index: 100;
    background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 8px;
}
.skip-link:focus { left: 8px; }