/* ============================================================================
   Andressa Fonseca — Advocacia | style.css
   ----------------------------------------------------------------------------
   Metodologia: BEM (bloco__elemento--modificador)
   Estrutura:
     1. Design Tokens (variáveis)
     2. Reset & Base
     3. Utilitários (container, botões, section header)
     4. Componentes de layout (Header, Footer)
     5. Seções (Hero, Sobre, Áreas, Diferenciais, Processo, Depoimentos, CTA, Contato)
     6. Componentes flutuantes (WhatsApp float, To-top)
     7. Animações (reveal, keyframes)
     8. Responsivo (mobile-first: base = mobile, media queries sobem)
   ============================================================================ */

/* ============================================================================
   1. DESIGN TOKENS — EDITE AQUI as cores, fontes, espaçamentos globais
   ============================================================================ */
:root {
  /* Paleta principal (transmite confiança + alto padrão) */
  --c-navy:        #0B1B33;   /* Azul marinho profundo (fundo principal escuro) */
  --c-navy-2:      #122544;   /* Azul marinho secundário */
  --c-gold:        #C9A24B;   /* Dourado elegante (accent) */
  --c-gold-soft:   #E4C983;   /* Dourado claro para hovers */
  --c-white:       #FFFFFF;
  --c-cream:       #F7F4EE;   /* Off-white para fundos suaves */
  --c-gray-100:    #F1F2F4;
  --c-gray-300:    #D6D8DE;
  --c-gray-500:    #7C8497;
  --c-graphite:    #2A2F3A;   /* Cinza grafite */
  --c-text:        #1B2233;
  --c-text-soft:   #4B5468;

  /* Tipografia */
  --font-serif:    "Playfair Display", Georgia, serif; /* títulos */
  --font-sans:     "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; /* corpo */

  /* Escala tipográfica (fluida via clamp) */
  --fs-xs:   0.8125rem;
  --fs-sm:   0.9375rem;
  --fs-base: 1rem;
  --fs-md:   1.125rem;
  --fs-lg:   clamp(1.25rem, 1.5vw + 1rem, 1.5rem);
  --fs-xl:   clamp(1.75rem, 2.5vw + 1rem, 2.5rem);
  --fs-2xl:  clamp(2.25rem, 4vw + 1rem, 3.75rem);

  /* Espaçamento */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4rem;
  --sp-9: 6rem;

  /* Layout */
  --container: 1200px;
  --radius:    4px;
  --radius-lg: 12px;

  /* Sombras */
  --shadow-sm: 0 4px 14px rgba(11, 27, 51, 0.08);
  --shadow-md: 0 14px 40px rgba(11, 27, 51, 0.12);
  --shadow-lg: 0 30px 80px rgba(11, 27, 51, 0.18);

  /* Transições */
  --t-fast: 180ms ease;
  --t-med:  320ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ============================================================================
   2. RESET & BASE
   ============================================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  color: var(--c-text);
  background: var(--c-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: transparent; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 600; line-height: 1.2; margin: 0; color: var(--c-navy); }
p { margin: 0; }

/* Foco visível (acessibilidade) */
:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Skip link */
.skip-link {
  position: absolute; top: -100px; left: 8px;
  background: var(--c-navy); color: var(--c-white);
  padding: 10px 16px; border-radius: 4px; z-index: 1000;
  transition: top var(--t-fast);
}
.skip-link:focus { top: 8px; }

/* Selection */
::selection { background: var(--c-gold); color: var(--c-navy); }

/* ============================================================================
   3. UTILITÁRIOS
   ============================================================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--sp-5);
}

/* Section base (padding vertical) */
.section {
  padding: clamp(3.5rem, 7vw, 6rem) 0;
}

/* Section header (kicker + título + lead) */
.section__header { max-width: 720px; margin: 0 auto var(--sp-7); text-align: center; }
.section__kicker {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-3);
}
.section__kicker::before,
.section__kicker::after { content: "—"; margin: 0 var(--sp-2); color: var(--c-gold); opacity: 0.5; }
.section__title {
  font-size: var(--fs-xl);
  color: var(--c-navy);
  margin-bottom: var(--sp-4);
}
.section__lead {
  font-size: var(--fs-md);
  color: var(--c-text-soft);
  max-width: 60ch;
  margin: 0 auto;
}
.section__header--light .section__title,
.section__title--light { color: var(--c-white); }
.section__kicker--light { color: var(--c-gold-soft); }
.section__kicker--light::before,
.section__kicker--light::after { color: var(--c-gold-soft); }

/* ===== BOTÕES ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  padding: 0.9rem 1.6rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--fs-sm);
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  transition: transform var(--t-fast), background var(--t-fast), color var(--t-fast), box-shadow var(--t-fast);
  border: 1px solid transparent;
  will-change: transform;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

/* Botão dourado (primário) */
.btn--gold {
  background: var(--c-gold);
  color: var(--c-navy);
  box-shadow: 0 8px 20px rgba(201, 162, 75, 0.28);
}
.btn--gold:hover { background: var(--c-gold-soft); box-shadow: 0 12px 28px rgba(201, 162, 75, 0.4); }

/* Botão fantasma */
.btn--ghost {
  background: transparent;
  color: var(--c-navy);
  border-color: var(--c-navy);
}
.btn--ghost:hover { background: var(--c-navy); color: var(--c-white); }

/* Modificadores de tamanho */
.btn--lg { padding: 1.1rem 2rem; font-size: var(--fs-base); }
.btn--block { width: 100%; }

/* ============================================================================
   4. HEADER
   ============================================================================ */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: background var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}
.header--scrolled { background: rgba(255, 255, 255, 0.96); border-bottom-color: var(--c-gray-100); box-shadow: var(--shadow-sm); }

.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 72px; gap: var(--sp-5);
}

/* Logo textual */
.header__logo { display: flex; align-items: center; gap: var(--sp-3); }
.header__logo-mark {
  width: 40px; height: 40px; border-radius: 4px;
  background: var(--c-navy); color: var(--c-gold);
  display: grid; place-items: center;
  font-family: var(--font-serif); font-weight: 700; font-size: 1.1rem;
  letter-spacing: 0.05em;
}
.header__logo-text {
  font-family: var(--font-serif); font-weight: 600; font-size: 1.1rem; color: var(--c-navy);
  line-height: 1.1; display: flex; flex-direction: column;
}
.header__logo-text small { font-family: var(--font-sans); font-size: 0.68rem; font-weight: 500;
  letter-spacing: 0.24em; text-transform: uppercase; color: var(--c-gold); }

/* Toggle mobile */
.header__toggle {
  display: inline-flex; flex-direction: column; gap: 5px; padding: 8px;
  margin-left: auto;
}
.header__toggle span {
  display: block; width: 26px; height: 2px; background: var(--c-navy);
  transition: transform var(--t-fast), opacity var(--t-fast);
}
.header__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.header__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Nav */
.header__nav {
  position: fixed; inset: 72px 0 0 0;
  background: var(--c-white);
  padding: var(--sp-6) var(--sp-5);
  display: flex; flex-direction: column; gap: var(--sp-5);
  transform: translateX(100%);
  transition: transform var(--t-med);
  overflow-y: auto;
}
.header__nav--open { transform: translateX(0); }
.header__nav-list { display: flex; flex-direction: column; gap: var(--sp-3); }
.header__nav-link {
  display: block; padding: var(--sp-3) 0;
  font-weight: 500; color: var(--c-navy);
  border-bottom: 1px solid var(--c-gray-100);
  transition: color var(--t-fast);
}
.header__nav-link:hover { color: var(--c-gold); }

.header__cta { align-self: flex-start; }

/* Body offset por causa do header fixo */
body { padding-top: 72px; }

/* ============================================================================
   5.1 HERO
   ============================================================================ */
.hero {
  position: relative;
  padding: clamp(2.5rem, 6vw, 5rem) 0 clamp(3.5rem, 8vw, 6.5rem);
  background:
    radial-gradient(1200px 500px at 90% -10%, rgba(201, 162, 75, 0.12), transparent 60%),
    linear-gradient(180deg, var(--c-cream), var(--c-white) 70%);
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--c-gray-100) 1px, transparent 1px);
  background-size: 100% 90px; opacity: 0.35;
  pointer-events: none;
}
.hero__inner {
  position: relative;
  display: grid; gap: var(--sp-7);
  align-items: center;
}
.hero__kicker {
  display: inline-block;
  font-size: var(--fs-xs); letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--c-gold); font-weight: 600; margin-bottom: var(--sp-4);
}
.hero__title {
  font-size: var(--fs-2xl);
  color: var(--c-navy);
  margin-bottom: var(--sp-5);
}
.hero__title-sub {
  display: block;
  font-family: var(--font-sans);
  font-size: clamp(1rem, 1.4vw + 0.6rem, 1.15rem);
  font-weight: 400; color: var(--c-text-soft);
  letter-spacing: 0.04em; margin-top: var(--sp-3);
}
.hero__lead { font-size: var(--fs-md); color: var(--c-text-soft); max-width: 52ch; margin-bottom: var(--sp-6); }
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--sp-3); margin-bottom: var(--sp-7); }

.hero__badges {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-4);
  border-top: 1px solid var(--c-gray-300); padding-top: var(--sp-5); max-width: 520px;
}
.hero__badges li { display: flex; flex-direction: column; gap: 2px; }
.hero__badges strong { font-family: var(--font-serif); font-size: 1.05rem; color: var(--c-navy); }
.hero__badges span { font-size: 0.78rem; color: var(--c-text-soft); }

/* Figure */
.hero__figure { position: relative; justify-self: center; max-width: 460px; width: 100%; }
.hero__photo {
  position: relative; z-index: 2;
  width: 100%; aspect-ratio: 4/5; object-fit: cover;
  border-radius: 2px;
  box-shadow: var(--shadow-lg);
  filter: saturate(1.02);
}
.hero__frame {
  position: absolute; inset: 20px -20px -20px 20px;
  border: 1px solid var(--c-gold);
  border-radius: 2px;
  z-index: 1;
}

/* ============================================================================
   5.2 SOBRE
   ============================================================================ */
.sobre { background: var(--c-white); }
.sobre__inner { display: grid; gap: var(--sp-7); align-items: center; }
.sobre__media { position: relative; max-width: 440px; justify-self: center; width: 100%; }
.sobre__photo { width: 100%; aspect-ratio: 4/5; object-fit: cover; border-radius: 2px; box-shadow: var(--shadow-md); position: relative; z-index: 2; }
.sobre__accent {
  position: absolute; inset: -18px 18px 18px -18px;
  background: var(--c-navy);
  z-index: 1;
}
.sobre__content .section__kicker { display: inline-block; }
.sobre__content .section__title { text-align: left; }
.sobre__text { color: var(--c-text-soft); font-size: var(--fs-md); margin-bottom: var(--sp-4); max-width: 58ch; }

.sobre__highlights { margin-top: var(--sp-6); display: grid; gap: var(--sp-5); }
.sobre__highlights li { display: flex; gap: var(--sp-4); align-items: flex-start; }
.sobre__num {
  font-family: var(--font-serif); font-size: 1.5rem; font-weight: 700;
  color: var(--c-gold); min-width: 40px;
}
.sobre__highlights h3 { font-size: 1.1rem; margin-bottom: var(--sp-1); }
.sobre__highlights p { color: var(--c-text-soft); font-size: var(--fs-sm); }

/* ============================================================================
   5.3 ÁREAS DE ATUAÇÃO
   ============================================================================ */
.areas { background: var(--c-cream); position: relative; }
.areas__grid {
  display: grid; grid-template-columns: 1fr; gap: var(--sp-5);
}
.areas__card {
  background: var(--c-white);
  padding: var(--sp-6);
  border: 1px solid var(--c-gray-100);
  border-radius: var(--radius);
  position: relative;
  transition: transform var(--t-med), box-shadow var(--t-med), border-color var(--t-med);
  overflow: hidden;
}
.areas__card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 100%; width: 3px;
  background: var(--c-gold); transform: scaleY(0); transform-origin: top;
  transition: transform var(--t-med);
}
.areas__card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.areas__card:hover::before { transform: scaleY(1); }
.areas__icon {
  display: inline-grid; place-items: center;
  width: 52px; height: 52px; border-radius: 50%;
  background: rgba(201, 162, 75, 0.12); color: var(--c-gold);
  margin-bottom: var(--sp-4);
}
.areas__icon svg { width: 26px; height: 26px; }
.areas__title { font-size: 1.2rem; margin-bottom: var(--sp-2); }
.areas__text { color: var(--c-text-soft); font-size: var(--fs-sm); }

/* ============================================================================
   5.4 DIFERENCIAIS (fundo escuro)
   ============================================================================ */
.dif {
  background:
    radial-gradient(600px 300px at 10% 0%, rgba(201, 162, 75, 0.18), transparent 60%),
    linear-gradient(180deg, var(--c-navy), var(--c-navy-2));
  color: var(--c-white);
}
.dif__grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-5); }
.dif__item {
  padding: var(--sp-6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.02);
  transition: background var(--t-med), border-color var(--t-med), transform var(--t-med);
}
.dif__item:hover { background: rgba(255, 255, 255, 0.05); border-color: var(--c-gold); transform: translateY(-4px); }
.dif__num {
  display: inline-block; font-family: var(--font-serif); font-size: 1.5rem;
  color: var(--c-gold); margin-bottom: var(--sp-3);
}
.dif__item h3 { color: var(--c-white); font-size: 1.15rem; margin-bottom: var(--sp-2); }
.dif__item p { color: rgba(255, 255, 255, 0.72); font-size: var(--fs-sm); }

/* ============================================================================
   5.5 PROCESSO — timeline
   ============================================================================ */
.processo { background: var(--c-white); }
.processo__timeline {
  position: relative;
  display: grid; gap: var(--sp-5);
  counter-reset: step;
}
.processo__timeline::before {
  content: ""; position: absolute; left: 24px; top: 0; bottom: 0;
  width: 1px; background: var(--c-gray-300);
}
.processo__step {
  position: relative; padding-left: 72px;
  padding-block: var(--sp-3);
}
.processo__dot {
  position: absolute; left: 0; top: 0;
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--c-navy); color: var(--c-gold);
  display: grid; place-items: center;
  font-family: var(--font-serif); font-weight: 700; font-size: 1.15rem;
  border: 3px solid var(--c-white);
  box-shadow: 0 0 0 1px var(--c-gray-300);
}
.processo__step h3 { font-size: 1.15rem; margin-bottom: var(--sp-2); }
.processo__step p { color: var(--c-text-soft); font-size: var(--fs-sm); max-width: 55ch; }

/* ============================================================================
   5.6 DEPOIMENTOS
   ============================================================================ */
.dep { background: var(--c-cream); }
.dep__grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-5); }
.dep__card {
  background: var(--c-white);
  padding: var(--sp-6);
  border-radius: var(--radius);
  border: 1px solid var(--c-gray-100);
  position: relative;
  transition: transform var(--t-med), box-shadow var(--t-med);
}
.dep__card::before {
  content: "\201C"; position: absolute; top: 6px; left: 16px;
  font-family: var(--font-serif); font-size: 4rem; color: var(--c-gold); line-height: 1;
}
.dep__card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.dep__quote { color: var(--c-text); font-style: italic; margin: var(--sp-5) 0 var(--sp-5); font-size: var(--fs-md); }
.dep__author { display: flex; flex-direction: column; border-top: 1px solid var(--c-gray-100); padding-top: var(--sp-3); }
.dep__author strong { font-family: var(--font-serif); color: var(--c-navy); font-size: 1.05rem; }
.dep__author span { font-size: 0.8rem; color: var(--c-gold); letter-spacing: 0.14em; text-transform: uppercase; }

/* ============================================================================
   5.7 CTA final
   ============================================================================ */
.cta {
  background:
    radial-gradient(700px 300px at 90% 0%, rgba(201, 162, 75, 0.2), transparent 60%),
    linear-gradient(135deg, var(--c-navy), var(--c-graphite));
  color: var(--c-white);
  padding: clamp(3.5rem, 7vw, 6rem) 0;
  text-align: center;
}
.cta__inner { max-width: 780px; margin: 0 auto; padding-inline: var(--sp-5); }
.cta__title { color: var(--c-white); font-size: var(--fs-xl); margin-bottom: var(--sp-4); }
.cta__text { color: rgba(255, 255, 255, 0.8); font-size: var(--fs-md); margin-bottom: var(--sp-6); }

/* ============================================================================
   5.8 CONTATO
   ============================================================================ */
.contato { background: var(--c-white); }
.contato__inner { display: grid; gap: var(--sp-7); }
.contato__lead { color: var(--c-text-soft); font-size: var(--fs-md); margin: var(--sp-4) 0 var(--sp-6); max-width: 46ch; }
.contato__list { display: grid; gap: var(--sp-4); }
.contato__list li { display: flex; flex-direction: column; gap: 2px; border-left: 2px solid var(--c-gold); padding-left: var(--sp-4); }
.contato__label { font-size: 0.75rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--c-gold); font-weight: 600; }
.contato__list a { color: var(--c-navy); font-weight: 500; font-size: var(--fs-md); transition: color var(--t-fast); }
.contato__list a:hover { color: var(--c-gold); }

/* Formulário */
.form {
  background: var(--c-cream);
  border: 1px solid var(--c-gray-100);
  padding: var(--sp-6);
  border-radius: var(--radius-lg);
  display: flex; flex-direction: column; gap: var(--sp-4);
}
.form__title { font-size: 1.35rem; margin-bottom: var(--sp-2); }
.form__row { display: flex; flex-direction: column; gap: 6px; }
.form__label { font-size: var(--fs-sm); font-weight: 600; color: var(--c-navy); }
.form__input {
  width: 100%;
  padding: 0.85rem 1rem;
  font: inherit; color: var(--c-text);
  background: var(--c-white);
  border: 1px solid var(--c-gray-300);
  border-radius: var(--radius);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.form__input:focus { border-color: var(--c-gold); box-shadow: 0 0 0 3px rgba(201, 162, 75, 0.2); outline: none; }
.form__input--area { resize: vertical; min-height: 120px; }
.form__input.is-invalid { border-color: #C0392B; box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.15); }
.form__error { font-size: 0.8rem; color: #C0392B; min-height: 1em; }
.form__success { text-align: center; padding: var(--sp-3); background: rgba(39, 174, 96, 0.12); color: #1E7E4A; border-radius: var(--radius); font-weight: 500; }

/* ============================================================================
   FOOTER
   ============================================================================ */
.footer { background: var(--c-navy); color: rgba(255, 255, 255, 0.75); padding-top: var(--sp-8); }
.footer__inner { display: grid; grid-template-columns: 1fr; gap: var(--sp-6); padding-bottom: var(--sp-7); }
.footer__logo { font-family: var(--font-serif); font-size: 1.4rem; color: var(--c-white); display: block; }
.footer__brand small { color: var(--c-gold); letter-spacing: 0.14em; font-size: 0.75rem; text-transform: uppercase; }
.footer__disclaimer { margin-top: var(--sp-4); font-size: 0.8rem; color: rgba(255, 255, 255, 0.55); max-width: 40ch; line-height: 1.6; }
.footer__nav h4, .footer__contact h4 { color: var(--c-white); font-size: 1rem; margin-bottom: var(--sp-3); }
.footer__nav ul, .footer__contact ul { display: flex; flex-direction: column; gap: var(--sp-2); }
.footer__nav a, .footer__contact a { color: rgba(255, 255, 255, 0.72); transition: color var(--t-fast); font-size: var(--fs-sm); }
.footer__nav a:hover, .footer__contact a:hover { color: var(--c-gold); }
.footer__bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: var(--sp-4) 0; font-size: 0.82rem; color: rgba(255, 255, 255, 0.55); text-align: center; }

/* ============================================================================
   6. FLUTUANTES (WhatsApp + Voltar ao topo)
   ============================================================================ */
.wa-float {
  position: fixed; right: 20px; bottom: 20px; z-index: 90;
  width: 56px; height: 56px; border-radius: 50%;
  background: #25D366; color: var(--c-white);
  display: grid; place-items: center;
  box-shadow: 0 12px 30px rgba(37, 211, 102, 0.4);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
  animation: pulse 2.4s ease-out infinite;
}
.wa-float:hover { transform: scale(1.08); }
@keyframes pulse {
  0%   { box-shadow: 0 12px 30px rgba(37, 211, 102, 0.4), 0 0 0 0 rgba(37, 211, 102, 0.5); }
  70%  { box-shadow: 0 12px 30px rgba(37, 211, 102, 0.4), 0 0 0 18px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 12px 30px rgba(37, 211, 102, 0.4), 0 0 0 0 rgba(37, 211, 102, 0); }
}

.to-top {
  position: fixed; right: 20px; bottom: 88px; z-index: 90;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--c-navy); color: var(--c-gold);
  display: grid; place-items: center;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity var(--t-fast), transform var(--t-fast), visibility var(--t-fast);
  box-shadow: var(--shadow-md);
}
.to-top--visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--c-graphite); }

/* ============================================================================
   7. ANIMAÇÕES — Scroll Reveal
   ============================================================================ */
[data-reveal] {
  opacity: 0; transform: translateY(24px);
  transition: opacity 700ms ease, transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: opacity, transform;
}
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

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

/* ============================================================================
   8. RESPONSIVO — mobile first
   ============================================================================ */

/* ----- ≥ 640px (tablet pequeno) ----- */
@media (min-width: 640px) {
  .areas__grid  { grid-template-columns: repeat(2, 1fr); }
  .dif__grid    { grid-template-columns: repeat(2, 1fr); }
  .dep__grid    { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1.4fr 1fr 1fr; }
}

/* ----- ≥ 900px (tablet grande / notebook) ----- */
@media (min-width: 900px) {
  .header__toggle { display: none; }
  .header__nav {
    position: static; transform: none; padding: 0;
    inset: auto; flex-direction: row; align-items: center;
    background: transparent; overflow: visible;
  }
  .header__nav-list { flex-direction: row; gap: var(--sp-5); }
  .header__nav-link { border-bottom: 0; padding: 0.3rem 0; position: relative; }
  .header__nav-link::after {
    content: ""; position: absolute; left: 0; bottom: -6px;
    width: 100%; height: 1px; background: var(--c-gold);
    transform: scaleX(0); transform-origin: right;
    transition: transform var(--t-med);
  }
  .header__nav-link:hover::after { transform: scaleX(1); transform-origin: left; }
  .header__cta { margin-left: var(--sp-4); }

  .hero__inner    { grid-template-columns: 1.15fr 1fr; }
  .sobre__inner   { grid-template-columns: 1fr 1.1fr; }
  .areas__grid    { grid-template-columns: repeat(3, 1fr); }
  .dif__grid      { grid-template-columns: repeat(3, 1fr); }
  .dep__grid      { grid-template-columns: repeat(3, 1fr); }
  .contato__inner { grid-template-columns: 1fr 1.1fr; align-items: start; }
  .footer__inner  { grid-template-columns: 1.5fr 1fr 1.3fr; }
}

/* ----- ≥ 1200px (desktop grande / ultrawide) ----- */
@media (min-width: 1200px) {
  .hero__title { font-size: clamp(2.5rem, 4.5vw, 4rem); }
}