/* ==========================================================================
   Richmo Media — Base: reset, tipografia, primitivos de layout, a11y
   ========================================================================== */

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

* { margin: 0; }

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

body {
  background: var(--bg);
  color: var(--ink-1);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100dvh;
  overflow-x: hidden;
}

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

/* Garante que [hidden] vence classes com display próprio (ex.: .btn) */
[hidden] { display: none !important; }

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

h1, h2, h3 {
  color: var(--ink-0);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: -0.02em;
  text-wrap: balance;
}

p { text-wrap: pretty; }

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

/* --- Eyebrow / label mono (assinatura tipográfica) ----------------------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--ink-2);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}
.eyebrow::before {
  content: "";
  width: 1.6em;
  height: 1px;
  background: var(--grad-brand);
  opacity: 0.7;
}

/* --- Texto com gradiente de marca (uso raro) ----------------------------- */
.grad-text {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* --- Seção --------------------------------------------------------------- */
.section { padding-block: var(--space-8); }
.section__head { max-width: 46rem; margin-bottom: var(--space-6); }
.section__title {
  font-size: var(--text-2xl);
  margin-top: var(--space-3);
}
.section__lead {
  font-size: var(--text-lg);
  color: var(--ink-1);
  margin-top: var(--space-3);
}

/* --- Signature: a "barra de divisão" como divisor de seções -------------- */
/* Eco do glifo ÷ : ponto · barra — alvo ◎. A barra é a espinha do layout. */
.rule {
  position: relative;
  height: 1px;
  border: 0;
  background: var(--line);
}
.rule--glow::after {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: clamp(80px, 22vw, 260px);
  height: 1px;
  transform: translateY(-50%);
  background: var(--grad-brand);
  opacity: 0.85;
}

/* --- Botões -------------------------------------------------------------- */
.btn {
  --_pad-y: 0.85em;
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: -0.01em;
  padding: var(--_pad-y) 1.4em;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease),
              border-color var(--dur) var(--ease),
              background var(--dur) var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  color: var(--white);
  background: var(--grad-brand);
  background-size: 200% 200%;
  background-position: 0% 50%;
  box-shadow: 0 0 24px -6px rgba(124, 58, 237, 0.5);
}
.btn--primary:hover {
  background-position: 100% 50%;
  box-shadow: 0 0 32px -4px rgba(124, 58, 237, 0.65);
}

.btn--ghost {
  color: var(--ink-0);
  background: transparent;
  border-color: var(--line-strong);
}
.btn--ghost:hover {
  border-color: rgba(124, 58, 237, 0.4);
  background: rgba(124, 58, 237, 0.05);
}

/* --- Acessibilidade ------------------------------------------------------ */
:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -3rem;
  z-index: 100;
  background: var(--surface-1);
  color: var(--ink-0);
  padding: 0.6em 1em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 0.75rem; }

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

/* --- Scroll reveal (progressive enhancement) ----------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur-slow) var(--ease),
              transform var(--dur-slow) var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* Sem JS, nada some: .no-js neutraliza o estado inicial */
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}