/* =========================================================
   3BF Agência — base.css
   Design tokens, reset, tipografia, utilitários
   Paleta extraída da identidade da marca (símbolo isométrico
   azul-marinho / azul elétrico / laranja / âmbar).
   ========================================================= */

:root {
  /* --- Marca --- */
  --navy-900: #08152c;
  --navy-800: #0d2450;
  --navy-700: #123268;
  --blue-600: #1a55c0;
  --blue-500: #2b76e8;
  --blue-300: #86b4f5;
  --orange-600: #d9560f;
  --orange-500: #f26a21;
  --orange-400: #ff8a3d;
  --amber-500: #f7a81b;

  /* --- Neutros (tema claro) --- */
  --paper: #fbfaf8;
  --paper-2: #f3f1ec;
  --paper-3: #e9e6df;
  --line: #ddd8ce;
  --line-soft: #eae6de;
  --ink: #0b0e14;
  --ink-2: #23262e;
  --muted: #6c6a63;
  --muted-2: #8d8a82;

  /* --- Semânticos --- */
  --bg: var(--paper);
  --fg: var(--ink);
  --accent: var(--orange-500);
  --accent-2: var(--blue-600);

  /* --- Métricas --- */
  --gut: clamp(1.25rem, 4vw, 4.5rem);
  --maxw: 1560px;
  --radius: 2px;
  --radius-lg: 4px;

  /* --- Tipo --- */
  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --step--1: clamp(0.78rem, 0.74rem + 0.18vw, 0.875rem);
  --step-0: clamp(0.95rem, 0.9rem + 0.25vw, 1.0625rem);
  --step-1: clamp(1.1rem, 1rem + 0.5vw, 1.3rem);
  --step-2: clamp(1.35rem, 1.15rem + 1vw, 1.9rem);
  --step-3: clamp(1.8rem, 1.3rem + 2.2vw, 3rem);
  --step-4: clamp(2.4rem, 1.4rem + 4.4vw, 5rem);
  --step-5: clamp(3rem, 1.2rem + 8vw, 9rem);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-io: cubic-bezier(0.65, 0, 0.35, 1);

  --header-h: 74px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: auto; /* Lenis assume o controle; âncoras tratadas em JS */
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  font-feature-settings: "ss01", "cv01";
}

body.is-locked { overflow: hidden; }

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

img,
video { height: auto; }

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

ul, ol { margin: 0; padding: 0; list-style: none; }

h1, h2, h3, h4, h5 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }

::selection {
  background: var(--navy-800);
  color: #fff;
}

/* --- Foco visível e acessível --- */
:focus-visible {
  outline: 2px solid var(--orange-500);
  outline-offset: 3px;
  border-radius: var(--radius);
}
:focus:not(:focus-visible) { outline: none; }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 999;
  padding: 0.75rem 1.25rem;
  background: var(--navy-900);
  color: #fff;
  font-size: var(--step--1);
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 1rem; }

.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;
}

/* =========================================================
   Layout
   ========================================================= */
.shell {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gut);
}

.section {
  position: relative;
  padding-block: clamp(4.5rem, 9vw, 9.5rem);
}

.section--tight { padding-block: clamp(3rem, 6vw, 6rem); }

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

/* Cabeçalho de seção editorial: 01 / LABEL / título */
.sec-head {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: start;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}

.sec-meta {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  padding-top: 0.5rem;
}

.sec-num {
  font-family: var(--font-display);
  font-size: var(--step--1);
  font-weight: 600;
  font-variation-settings: "wdth" 78;
  color: var(--orange-500);
  letter-spacing: 0.04em;
}

.label {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.label--ink { color: var(--ink); }
.label--paper { color: rgba(255, 255, 255, 0.62); }

.sec-title {
  font-size: var(--step-4);
  font-weight: 500;
  font-variation-settings: "wdth" 92;
}

.sec-title em {
  font-style: normal;
  color: var(--muted-2);
}

.sec-lede {
  margin-top: 1.5rem;
  max-width: 46ch;
  color: var(--muted);
  font-size: var(--step-1);
  line-height: 1.5;
}

/* =========================================================
   Botões / links
   ========================================================= */
.btn {
  --btn-bg: var(--ink);
  --btn-fg: #fff;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.95rem 1.6rem;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  overflow: hidden;
  transition: transform 0.4s var(--ease), background-color 0.35s var(--ease);
  will-change: transform;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn__arrow {
  width: 15px; height: 15px;
  flex: none;
  transition: transform 0.4s var(--ease);
}
.btn:hover .btn__arrow { transform: translate(3px, -3px); }

.btn--accent { --btn-bg: var(--orange-500); }
.btn--accent:hover { --btn-bg: var(--orange-600); }

.btn--navy { --btn-bg: var(--navy-800); }
.btn--navy:hover { --btn-bg: var(--navy-900); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  border: 1px solid var(--line);
}
.btn--ghost:hover { --btn-bg: var(--paper-2); }

.btn--light {
  --btn-bg: #fff;
  --btn-fg: var(--navy-900);
}

/* Link com sublinhado animado */
.ulink {
  position: relative;
  display: inline-block;
  padding-bottom: 2px;
}
.ulink::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.45s var(--ease);
}
.ulink:hover::after,
.ulink:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* =========================================================
   Animações de entrada (progressive enhancement)
   ========================================================= */
.js .reveal { opacity: 0; }
.js .reveal-line > * { opacity: 0; }

/* LCP: o conteúdo acima da dobra do hero NÃO é pré-escondido pelo CSS.
   O scroll.js já faz gsap.set(..., { opacity: 0 }) nesses mesmos elementos antes
   de animar, então esconder aqui era redundante — e criava uma dependência dura:
   com o GSAP vindo de CDN, o texto do hero (o elemento de LCP da página) só
   aparecia depois que a CDN respondesse. Mantendo-os visíveis, o hero pinta no
   primeiro frame e a animação continua acontecendo quando o GSAP carrega. */
.js .hero .reveal,
.js .phero .reveal,
.js .hero .reveal-line > *,
.js .phero .reveal-line > * { opacity: 1; }

/* Sem JS, tudo visível */
.no-js .reveal,
.no-js .reveal-line > * { opacity: 1 !important; transform: none !important; }

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