/* ==========================================================================
   Peça Ajuda · Design System — Base
   Reset, tipografia base, primitivas de layout e utilitários.
   Depende de: tokens.css, fonts.css
   ========================================================================== */

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

* {
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  background: var(--color-bg);
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + var(--space-4));
}

body {
  min-height: 100svh;
  font-family: var(--font-sans);
  font-size: var(--text-md);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01" on, "cv11" on;
  overflow-x: clip;
}

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

svg {
  flex-shrink: 0;
}

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 {
  font-weight: var(--weight-medium);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

::selection {
  background: var(--color-selection);
  color: var(--color-text);
}

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

[hidden] {
  display: none !important;
}

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

.grid-12 {
  display: grid;
  grid-template-columns: repeat(var(--grid-columns), minmax(0, 1fr));
  gap: var(--grid-gap);
}

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

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

/* Seção: ritmo vertical padrão da página */
.section {
  position: relative;
  isolation: isolate;
  padding-block: var(--section-pad-y);
}

.section--divided {
  border-top: var(--border-width) solid var(--color-border);
}

/* ---------------------------------------------------------------- Tipografia
   Classes de papel tipográfico. Use-as em vez de definir font-size solto.     */
.t-display {
  font-size: var(--text-6xl);
  font-weight: var(--weight-medium);
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
}

.t-h1 {
  font-size: var(--text-5xl);
  font-weight: var(--weight-medium);
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
}

.t-h2 {
  font-size: var(--text-4xl);
  font-weight: var(--weight-medium);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-display);
}

/* Frase de impacto em parágrafo (manifesto, fechamento) */
.t-statement {
  font-size: var(--text-4xl);
  font-weight: var(--weight-medium);
  line-height: 1.12;
  letter-spacing: var(--tracking-display);
  text-wrap: pretty;
}

.t-h3 {
  font-size: var(--text-3xl);
  font-weight: var(--weight-medium);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.t-h4 {
  font-size: var(--text-2xl);
  font-weight: var(--weight-medium);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
}

.t-lead {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.t-body {
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.t-small {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-text-secondary);
}

.t-label {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  font-weight: var(--weight-medium);
  line-height: var(--leading-none);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.t-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.t-lead strong,
.t-body strong,
.t-small strong {
  font-weight: var(--weight-medium);
  color: var(--color-text);
}

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

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

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

.text-silver {
  background: var(--gradient-text-silver);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-bottom: 0.08em;
  margin-bottom: -0.08em;
}

/* O "." quadrado da marca. Herda o tamanho da fonte do contexto. */
/* Regra: o ponto contrasta com a palavra — palavra clara → ponto menta,
   palavra menta → ponto claro (--light). */
.brand-dot {
  display: inline-block;
  width: var(--brand-dot-size);
  height: var(--brand-dot-size);
  margin-left: 0.06em;
  background: var(--color-accent);
  vertical-align: baseline;
}

.brand-dot--light {
  background: var(--color-text);
}

/* ---------------------------------------------------------------- Utilitários */
.sr-only {
  position: absolute !important;
  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-3);
  left: var(--space-3);
  z-index: var(--z-overlay);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-on-accent);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  transform: translateY(-200%);
  transition: transform var(--dur-base) var(--ease-out);
}

.skip-link:focus-visible {
  transform: none;
}

/* Textura de grão (ruído SVG inline) — aplicar em camadas de fundo */
.grain::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .55 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.045;
  mix-blend-mode: overlay;
  pointer-events: none;
}