/* ==========================================================
   e-Mutante — sistema visual v2
   Segue a linguagem das apresentações: noite quente, títulos em
   Source Serif com gradiente de cobre, texto em IBM Plex Sans leve,
   rótulos espaçados em cobre, cartões de vidro, imagens atmosféricas.
   Engenharia troca o cobre pelo azul-gelo (data-theme="eng").
   Tamanhos limitados pela largura E pela altura da tela.
   ========================================================== */

:root {
  --bg: #0B0908;
  --bg-2: #14110E;
  --bg-3: #1B1510;
  --text: #F9F4EC;
  --text-2: #D6C9B6;
  --text-3: #BFB2A0;
  --text-4: #8A7E6F;
  --line: rgba(224, 174, 115, .14);
  --line-2: rgba(224, 174, 115, .28);

  --accent: #E0AE73;          /* cobre claro */
  --accent-2: #C4854A;        /* cobre */
  --accent-3: #A8763F;        /* cobre escuro */
  --title-grad: linear-gradient(102deg, #FFFCF6 0%, #F0CB9B 38%, #C4854A 74%, #96632C 100%);
  --card: linear-gradient(160deg, rgba(255, 236, 210, .055), rgba(255, 236, 210, .015));

  /* gelo: frente digital */
  --ice: #9CC0D4;
  --ice-2: #7FA3B8;
  --ice-3: #4E7185;
  --ice-grad: linear-gradient(102deg, #FFFDF8 0%, #DCE4E9 40%, #9CC0D4 75%, #4E7185 100%);

  /* compatibilidade com nomes usados nas páginas */
  --night: var(--bg); --light: var(--text); --fg: var(--text); --muted: var(--text-3);
  --rule: var(--line); --copper: var(--accent-2); --cobalt: var(--ice-3); --cyan: var(--ice-3);
  --concrete: var(--accent-2); --ink: var(--bg); --paper: var(--text);

  --f-serif: "Source Serif 4", Georgia, serif;
  --f-sans: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --f-display: var(--f-serif);
  --f-body: var(--f-sans);
  --f-mono: var(--f-sans);

  --gutter: clamp(18px, 5vw, 96px);
  --maxw: 1360px;
  --nav-h: 72px;
  --radius: 18px;

  --ease: cubic-bezier(.65, 0, .2, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
}

body[data-theme="eng"] {
  --bg: #0A0D10; --bg-2: #10161B; --bg-3: #16212A;
  --text-2: #DCE4E9; --text-3: #AAB8C2; --text-4: #6E7D88;
  --line: rgba(156, 192, 212, .14); --line-2: rgba(156, 192, 212, .3);
  --accent: #9CC0D4; --accent-2: #7FA3B8; --accent-3: #4E7185;
  --title-grad: var(--ice-grad);
  --card: linear-gradient(160deg, rgba(200, 225, 240, .055), rgba(200, 225, 240, .015));
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; background: var(--bg); scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 300 17px/1.65 var(--f-sans);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; color: inherit; }
::selection { background: var(--accent); color: var(--bg); }
:focus-visible { outline: 1.5px solid var(--accent); outline-offset: 4px; border-radius: 6px; }

/* ---------- tipografia ---------- */
.display, h1, h2, h3 { font-family: var(--f-serif); font-weight: 400; margin: 0; }
.display { line-height: 1.04; letter-spacing: -.025em; }
.d-hero { font-size: clamp(44px, min(7.4vw, 12.5vh), 120px); line-height: .98; letter-spacing: -.035em; }
.d-xl   { font-size: clamp(38px, min(5.4vw, 10vh), 86px); line-height: 1.02; letter-spacing: -.03em; }
.d-l    { font-size: clamp(32px, min(4vw, 8vh), 62px); line-height: 1.06; }
.d-m    { font-size: clamp(26px, 2.6vw, 40px); line-height: 1.12; letter-spacing: -.015em; }
.d-s    { font-size: clamp(20px, 1.7vw, 26px); line-height: 1.22; letter-spacing: -.01em; }
.d-xxl  { font-size: clamp(44px, min(7.4vw, 12.5vh), 120px); line-height: .98; letter-spacing: -.035em; } /* legado */

.grad { background: var(--title-grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; padding-bottom: .06em; }
.grad-ice { background: var(--ice-grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; padding-bottom: .06em; }
.display em, .serif-it { font-style: italic; }
/* o trecho destacado do título é uma ideia só: não parte no meio */
.display em { white-space: nowrap; }
/* a última linha do título nunca fica com uma palavra só */
.display, p, li { text-wrap: pretty; }
.light { font-weight: 300; }

.eyebrow, .label {
  font-family: var(--f-sans); font-weight: 600; font-size: 12px; line-height: 1.4;
  letter-spacing: .32em; text-transform: uppercase; color: var(--accent);
}
.label { color: var(--text-4); letter-spacing: .2em; font-weight: 500; }
.mono { font-family: var(--f-sans); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; font-weight: 500; }
.nocase { text-transform: none !important; letter-spacing: normal; }

.lede { font-size: clamp(18px, 1.45vw, 22px); line-height: 1.55; font-weight: 300; color: var(--text); max-width: 40ch; margin: 0; }
/* texto quebrado à mão: uma frase por linha, sem a frase partir no meio */
.lede:has(br) { max-width: 62ch; }
/* no celular a linha é curta: só ficam as quebras depois de ponto (ver site.js) */
@media (max-width: 600px) { br.br-mid { display: none; } }
.body-copy { max-width: 60ch; color: var(--text-3); }
.body-copy p { margin: 0 0 1em; }
.muted { color: var(--text-3); }
.accent { color: var(--accent); }

/* a linha de cobre antes do texto de apoio, como nas apresentações */
.lead-line { display: grid; grid-template-columns: clamp(40px, 6vw, 92px) 1fr; gap: clamp(16px, 2vw, 28px); align-items: center; }
.lead-line::before { content: ""; height: 2px; border-radius: 2px; background: linear-gradient(90deg, transparent, var(--accent)); box-shadow: 0 0 12px var(--accent); }

/* ---------- layout ---------- */
.wrap { width: 100%; max-width: calc(var(--maxw) + var(--gutter) * 2); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(14px, 2vw, 32px); }
.section { position: relative; padding-top: clamp(80px, 13vh, 150px); padding-bottom: clamp(80px, 13vh, 150px); }
.section.tight { padding-top: clamp(56px, 8vh, 96px); padding-bottom: clamp(56px, 8vh, 96px); }
.alt { background: var(--bg-2); }
.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }
.sheet-head { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; padding: 14px 0; border-top: 1px solid var(--line); color: var(--text-4); }
.head { max-width: 820px; margin-bottom: clamp(36px, 6vh, 64px); }
.head .eyebrow { display: block; margin-bottom: 18px; }
.head p { margin-top: 18px; }

/* cartões de vidro */
.card {
  position: relative; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--line);
  padding: clamp(22px, 2.4vw, 34px);
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, .7);
  transition: border-color .4s, transform .5s var(--ease-out), background .4s;
}
.card:hover { border-color: var(--line-2); }
.card .num { font-weight: 600; font-size: 14px; letter-spacing: .18em; color: var(--text-4); }
.card h3 { font-size: clamp(21px, 1.8vw, 27px); line-height: 1.2; margin: 10px 0 8px; }
.card .sub { color: var(--accent); font-weight: 400; margin: 0 0 10px; }
.card p { margin: 0; color: var(--text-3); }
.cards { display: grid; gap: clamp(14px, 1.4vw, 20px); grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }

/* imagem atmosférica com véu */
.atmos { position: absolute; inset: 0; overflow: hidden; z-index: 0; }
.atmos img, .atmos video { width: 100%; height: 100%; object-fit: cover; }
.atmos::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--bg) 0%, rgba(11,9,8,.86) 34%, rgba(11,9,8,.35) 70%, rgba(11,9,8,.2) 100%), linear-gradient(0deg, var(--bg) 0%, transparent 30%); }
body[data-theme="eng"] .atmos::after { background: linear-gradient(90deg, var(--bg) 0%, rgba(10,13,16,.86) 34%, rgba(10,13,16,.3) 72%, rgba(10,13,16,.2) 100%), linear-gradient(0deg, var(--bg) 0%, transparent 30%); }
.over { position: relative; z-index: 1; }

/* moldura de slide */
.frame { position: absolute; inset: clamp(12px, 3vw, 48px); border: 1px solid var(--line); border-radius: 4px; pointer-events: none; z-index: 1; }

/* figura com legenda */
.figure-img { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: var(--bg-2); }
.figure-img img { width: 100%; height: 100%; object-fit: cover; }
figcaption { margin-top: 12px; font-size: 13px; color: var(--text-4); }

/* ---------- navegação ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50; height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 var(--gutter); color: var(--text);
  transition: transform .6s var(--ease), background .5s, border-color .5s;
  border-bottom: 1px solid transparent;
}
.nav.solid { background: rgba(11, 9, 8, .78); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom-color: var(--line); }
body[data-theme="eng"] .nav.solid { background: rgba(10, 13, 16, .8); }
@media (min-width: 981px) { .nav.tucked { transform: translateY(-100%); } }
.nav a { text-decoration: none; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand .logo { width: 46px; }
.brand-word { font-family: var(--f-serif); font-size: 21px; letter-spacing: -.01em; }
.nav-links { display: flex; align-items: center; gap: clamp(16px, 2.2vw, 34px); }
.nav-links a { font-size: 14px; font-weight: 400; color: var(--text-3); position: relative; padding: 6px 0; transition: color .3s; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }
.nav-links a[aria-current="page"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.nav-links .client { color: var(--text); border: 1px solid var(--line-2); border-radius: 999px; padding: 9px 18px; transition: background .3s, color .3s; }
.nav-links .client::after { display: none; }
.nav-links .client:hover { background: var(--accent); color: var(--bg); border-color: var(--accent); }
.nav-toggle { display: none; background: none; border: 1px solid var(--line-2); border-radius: 999px; padding: 8px 18px; cursor: pointer; font-size: 14px; }

@media (max-width: 980px) {
  .nav-toggle { display: block; }
  .nav.solid { backdrop-filter: none; -webkit-backdrop-filter: none; background: rgba(11, 9, 8, .96); }
  body[data-theme="eng"] .nav.solid { background: rgba(10, 13, 16, .96); }
  .nav-links {
    position: fixed; inset: 0; flex-direction: column; justify-content: center; align-items: flex-start;
    gap: 10px; padding: var(--gutter); background: var(--bg);
    opacity: 0; visibility: hidden; transition: opacity .45s var(--ease), visibility 0s .45s;
  }
  .nav-links a { font-family: var(--f-serif); font-size: clamp(30px, 8vw, 44px); color: var(--text); }
  .nav-links .client { font-family: var(--f-sans); font-size: 16px; margin-top: 18px; }
  .nav.open { background: transparent; border-bottom-color: transparent; }
  .nav.open .nav-links { opacity: 1; visibility: visible; transition: opacity .45s var(--ease); }
  .nav.open .nav-toggle, .nav.open .brand { position: relative; z-index: 2; }
}

/* ---------- botões ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  font-family: var(--f-sans); font-size: 15px; font-weight: 500; letter-spacing: .01em;
  text-decoration: none; cursor: pointer; white-space: nowrap;
  padding: 15px 26px; border-radius: 999px;
  border: 1px solid var(--line-2); background: rgba(255, 236, 210, .03); color: var(--text);
  transition: background .35s var(--ease), color .35s var(--ease), border-color .35s, box-shadow .35s;
}
.btn .arr { display: inline-block; transition: transform .4s var(--ease); }
.btn:hover { border-color: var(--accent); background: rgba(224, 174, 115, .08); }
.btn:hover .arr { transform: translateX(5px); }
.btn.solid { background: var(--title-grad); color: #1B1510; border-color: transparent; font-weight: 600; }
.btn.solid:hover { box-shadow: 0 10px 40px -10px var(--accent-2); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- revelação ---------- */
[data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity 1.1s var(--ease-out), transform 1.2s var(--ease-out); }
[data-reveal].in { opacity: 1; transform: none; }
.mask-line { display: block; overflow: hidden; padding: .1em 0 .08em; margin: -.1em 0 -.08em; }
.mask-line > span { display: block; transform: translateY(110%); transition: transform 1.2s var(--ease-out); }
.in .mask-line > span, .mask-line.in > span { transform: none; }
.in .mask-line:nth-child(2) > span { transition-delay: .09s; }
.in .mask-line:nth-child(3) > span { transition-delay: .18s; }

/* ---------- logo: as cores são mutantes ---------- */
@property --lg-warm { syntax: "<color>"; inherits: true; initial-value: #E0AE73; }
@property --lg-cold { syntax: "<color>"; inherits: true; initial-value: #9CC0D4; }
.logo { display: block; height: auto; overflow: visible; color: var(--text); }
.logo .lg-warm { stroke: var(--lg-warm); }
.logo .lg-cold { stroke: var(--lg-cold); }
.logo-live { animation: lg-mutate 20s ease-in-out infinite; }
@keyframes lg-mutate {
  0%, 100% { --lg-warm: #E0AE73; --lg-cold: #9CC0D4; }
  20%      { --lg-warm: #C4854A; --lg-cold: #5E9C8A; }
  40%      { --lg-warm: #F0CB9B; --lg-cold: #4E7185; }
  60%      { --lg-warm: #B05A36; --lg-cold: #7FA3B8; }
  80%      { --lg-warm: #D9A268; --lg-cold: #6C86C9; }
}
.logo-glow { filter: drop-shadow(0 0 18px rgba(224, 174, 115, .28)) drop-shadow(0 0 48px rgba(156, 192, 212, .18)); }

/* ---------- rodapé ---------- */
.footer { position: relative; padding: clamp(64px, 10vh, 110px) 0 28px; border-top: 1px solid var(--line); background: var(--bg-2); }
.footer .grid { row-gap: 36px; }
.footer-word { font-family: var(--f-serif); font-size: clamp(56px, 12vw, 190px); line-height: 1; letter-spacing: -.04em; margin: 56px 0 24px; white-space: nowrap; }
.footer a { text-decoration: none; color: var(--text-3); transition: color .3s; }
.footer a:hover { color: var(--text); }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer .eyebrow { display: block; margin-bottom: 14px; }

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  .grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .eyebrow { letter-spacing: .22em; font-size: 11px; }
  .btn { white-space: normal; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  [data-reveal] { opacity: 1; transform: none; }
  .mask-line > span { transform: none; }
}

.footer-cols > .fc-thesis { grid-column: span 5; }
.footer-cols > .fc { grid-column: span 2; }
.footer-cols > .fc:first-of-type { grid-column: 7 / span 2; }
@media (max-width: 900px) {
  .footer-cols > .fc-thesis { grid-column: 1 / -1; }
  .footer-cols > .fc, .footer-cols > .fc:first-of-type { grid-column: span 2; }
}
@media (max-width: 600px) { .footer-cols > .fc, .footer-cols > .fc:first-of-type { grid-column: 1 / -1; } }
.nobr { white-space: nowrap; }
@media (max-width: 600px) {
  .lead-line { grid-template-columns: 1fr; gap: 14px; }
  .lead-line::before { width: 64px; }
}

/* logo monocromático (decisão da cliente): o desenho todo na cor do texto, sem fios coloridos */
.logo .lg-warm, .logo .lg-cold { stroke: currentColor !important; }
.logo-live { animation: none !important; }
.logo-glow { filter: drop-shadow(0 0 22px rgba(224, 174, 115, .18)); }