/* =========================================================
   NEUCI — base.css
   Reset, tokens compartilhados, tipografia, utilitários,
   botões, animações de entrada e WhatsApp flutuante.
   ========================================================= */

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

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 400; line-height: 1.15; }
p { margin: 0; }

::selection { background: var(--accent); color: var(--on-accent); }

/* ---------- Layout ---------- */

.wrap {
  width: min(1180px, calc(100% - 2.5rem));
  margin-inline: auto;
}

.section {
  padding: clamp(4.5rem, 10vw, 8rem) 0;
  position: relative;
}

.grid { display: grid; gap: clamp(1rem, 2.5vw, 2rem); }

/* ---------- Tipografia utilitária ---------- */

.eyebrow {
  font-family: var(--font-sans);
  font-size: .72rem;
  letter-spacing: .32em;
  text-transform: uppercase;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: .8rem;
  margin-bottom: 1.25rem;
}

.eyebrow::before {
  content: "";
  width: 2.2rem;
  height: 1px;
  background: currentColor;
  opacity: .55;
}

.eyebrow--center { justify-content: center; }
.eyebrow--center::after {
  content: "";
  width: 2.2rem;
  height: 1px;
  background: currentColor;
  opacity: .55;
}

.title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5.2vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -.01em;
}

.title--sm { font-size: clamp(1.6rem, 3.6vw, 2.4rem); }

.lead {
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  max-width: 60ch;
}

.center { text-align: center; }
.center .lead { margin-inline: auto; }

/* ---------- Botões ---------- */

.btn {
  --btn-bg: var(--accent);
  --btn-fg: var(--on-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .65rem;
  padding: .95rem 1.9rem;
  border-radius: 100px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition: transform .3s cubic-bezier(.2,.8,.2,1), box-shadow .3s, background .3s, color .3s, border-color .3s;
  will-change: transform;
}

.btn:hover { transform: translateY(-3px); box-shadow: 0 14px 30px -12px rgba(0,0,0,.55); }
.btn:active { transform: translateY(-1px); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--fg);
  border-color: var(--line-strong);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn--wa { --btn-bg: #1FA855; --btn-fg: #fff; }

.btn svg { width: 1.05em; height: 1.05em; flex: none; }

/* ---------- Link com seta ---------- */

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-size: .78rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent);
  padding-bottom: .25rem;
  border-bottom: 1px solid transparent;
  transition: border-color .3s, gap .3s;
}
.arrow-link:hover { border-color: currentColor; gap: .95rem; }

/* =========================================================
   COMPONENTES COMPARTILHADOS (home + espacim)
   As cores vêm dos tokens definidos em home.css / espacim.css
   ========================================================= */

/* ---------- Navegação ---------- */

.nav { display: flex; align-items: center; gap: 2rem; }

.nav__list { display: flex; gap: 1.9rem; }

.nav__link {
  position: relative;
  font-size: .76rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  font-weight: 500;
  opacity: .85;
  padding: .35rem 0;
  transition: opacity .3s, color .3s;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  height: 1px;
  width: 100%;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .4s cubic-bezier(.2,.8,.2,1);
}

.nav__link:hover,
.nav__link.is-active { opacity: 1; }
.nav__link:hover::after,
.nav__link.is-active::after { transform: scaleX(1); transform-origin: left; }

.nav__link--out { opacity: 1; }

/* ---------- Botão hambúrguer ---------- */

.burger {
  display: none;
  width: 44px; height: 44px;
  position: relative;
  z-index: 120;
}

.burger span {
  position: absolute;
  left: 11px;
  width: 22px; height: 1.5px;
  background: var(--fg);
  transition: transform .35s cubic-bezier(.2,.8,.2,1), opacity .25s, width .35s;
}
.burger span:nth-child(1) { top: 16px; }
.burger span:nth-child(2) { top: 22px; width: 15px; }
.burger span:nth-child(3) { top: 28px; }

.burger.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); width: 22px; }

/* ---------- Campos de formulário ---------- */

.field { margin-bottom: 1.2rem; }

.field label {
  display: block;
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: .5rem;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: .85rem 1rem;
  background: var(--field-bg, rgba(255,255,255,.03));
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--fg);
  font: inherit;
  font-size: .95rem;
  transition: border-color .3s, background .3s;
}

.field select {
  appearance: none;
  cursor: pointer;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--accent) 50%),
    linear-gradient(135deg, var(--accent) 50%, transparent 50%);
  background-position: calc(100% - 20px) 52%, calc(100% - 14px) 52%;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

.field textarea { resize: vertical; min-height: 110px; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.wa-form__hint {
  margin-top: .9rem;
  font-size: .75rem;
  color: var(--muted);
  text-align: center;
}

/* ---------- Navegação mobile ---------- */

@media (max-width: 900px) {
  .burger { display: block; }

  .nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    justify-content: center;
    gap: 2.5rem;
    background: var(--nav-overlay, rgba(0,0,0,.97));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    clip-path: circle(0% at calc(100% - 46px) 46px);
    transition: clip-path .6s cubic-bezier(.6,.05,.2,1);
    pointer-events: none;
  }

  .nav.is-open {
    clip-path: circle(150% at calc(100% - 46px) 46px);
    pointer-events: auto;
  }

  .nav__list { flex-direction: column; align-items: center; gap: 1.6rem; }
  .nav__link { font-size: 1.05rem; letter-spacing: .22em; }
  .nav .btn { padding: .95rem 2rem; font-size: .78rem; }
}

/* ---------- Placeholder de mídia ---------- */
/* Substituir por <img>/<video> reais. O texto entre colchetes
   indica o que deve entrar no lugar. */

.ph {
  position: relative;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  text-align: center;
  overflow: hidden;
  background:
    repeating-linear-gradient(
      -45deg,
      var(--ph-a) 0 12px,
      var(--ph-b) 12px 24px
    );
  color: var(--ph-fg);
  font-size: .68rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  font-weight: 600;
}

.ph span {
  position: relative;
  z-index: 1;
  max-width: 22ch;
  line-height: 1.7;
  opacity: .85;
}

.ph::after {
  content: "";
  position: absolute;
  inset: .75rem;
  border: 1px dashed currentColor;
  opacity: .3;
  pointer-events: none;
}

.ph--16x9 { aspect-ratio: 16 / 9; }
.ph--4x5  { aspect-ratio: 4 / 5; }
.ph--1x1  { aspect-ratio: 1 / 1; }
.ph--3x4  { aspect-ratio: 3 / 4; }

/* ---------- Reveal on scroll ---------- */

/* O conteúdo é visível por padrão. Só escondemos para animar quando há
   JavaScript ativo (a classe .js é adicionada no <head> de cada página),
   assim nada some se o script falhar ou estiver desabilitado. */
.js .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1);
  transition-delay: var(--d, 0ms);
}
.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; }
}

/* ---------- WhatsApp flutuante ---------- */

.wa-float {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  padding: .85rem 1.35rem .85rem .95rem;
  border-radius: 100px;
  background: #1FA855;
  color: #fff;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  box-shadow: 0 12px 34px -10px rgba(31,168,85,.75);
  transform: translateY(140%);
  opacity: 0;
  transition: transform .5s cubic-bezier(.2,.8,.2,1), opacity .5s, box-shadow .3s;
}

.wa-float.is-visible { transform: none; opacity: 1; }
.wa-float:hover { box-shadow: 0 16px 40px -10px rgba(31,168,85,.9); }

.wa-float svg { width: 1.5rem; height: 1.5rem; flex: none; }

.wa-float::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(255,255,255,.35);
  animation: waPulse 2.6s ease-out infinite;
}

@keyframes waPulse {
  0%   { transform: scale(1);    opacity: .7; }
  70%  { transform: scale(1.18); opacity: 0; }
  100% { transform: scale(1.18); opacity: 0; }
}

@media (max-width: 560px) {
  .wa-float span { display: none; }
  .wa-float { padding: .95rem; }
}

/* ---------- Skip link (acessibilidade) ---------- */

.skip {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 200;
  background: var(--accent);
  color: var(--on-accent);
  padding: .75rem 1.25rem;
  border-radius: 0 0 8px 8px;
  transition: top .25s;
}
.skip:focus { top: 0; }