/* ============================================================
   bossa.consulting v3 — componentes
   Botões (3 variantes), cards com halo, nav, footer.
   Estrutura reta (0px) em tudo, botões incluídos — código 04.
   ============================================================ */

/* ---------- BOTÕES (anatomia Collins, duas velocidades) ---------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 2.8125rem;
  padding: 0 1.5rem;
  gap: 0.75rem;
  width: fit-content;
  border-radius: 0;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bg);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
  text-transform: lowercase;
  cursor: pointer;
  position: relative;
  outline: none;
  transition: var(--dur-slow) transform var(--ease-out-expo);
}
.button:active { transform: scale(0.95); }

/* --default: contorno que inverte figura/fundo no hover */
.button--default {
  background: transparent;
  color: var(--fg);
  border-color: var(--fg);
  transition:
    var(--dur-slow) transform var(--ease-out-expo),
    var(--dur-color) background-color var(--ease-in-out-sine),
    var(--dur-color) color var(--ease-in-out-sine);
}
.button--default:hover,
.button--default:focus-visible {
  background-color: var(--fg);
  color: var(--bg);
}

/* --solid: preenchido, ganha sombra que nasce no hover via :before */
.button--solid {
  background: var(--btn-bg);
  color: var(--btn-fg);
  border-color: var(--btn-bg);
  transition:
    var(--dur-slow) transform var(--ease-out-expo),
    var(--dur-color) background-color var(--ease-in-out-sine);
}
.button--solid::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: var(--shadow-sm);
  opacity: 0;
  transition: var(--dur-slow) opacity var(--ease-out-expo);
  pointer-events: none;
}
.button--solid:hover::before,
.button--solid:focus-visible::before { opacity: 1; }

/* --ghost: link-botão com seta */
.button--ghost {
  height: auto;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--fg);
  border-radius: 0;
  letter-spacing: 0.02em;
  gap: 0.5rem;
}
.button--ghost .arrow {
  display: inline-block;
  transition: transform var(--dur-fast) var(--ease-out-expo);
}
.button--ghost:hover .arrow { transform: translateX(0.35rem); }

/* ---------- CARD COM HALO (clip-path que expande) ---------- */
/* Estrutura reta em repouso; halo cresce por trás no hover.
   Na versão bossa o canto externo do halo é reto (round 0). */
.card {
  position: relative;
  display: block;
  padding: 2rem;
  z-index: 0;
  isolation: isolate;
}
.card::before {
  content: "";
  position: absolute;
  inset: -0.5rem;
  background-color: var(--halo);
  clip-path: xywh(0.5rem 0.5rem calc(100% - 1rem) calc(100% - 1rem) round 0);
  opacity: 0;
  z-index: -1;
  transition:
    0.4s opacity var(--ease-out-cubic),
    var(--dur-slow) clip-path var(--ease-out-expo);
  pointer-events: none;
}
.card:hover::before {
  opacity: 1;
  clip-path: xywh(0 0 100% 100% round 0);
}

/* ---------- NAV ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 130; /* acima do overlay do menu (120): wordmark e toggle ficam visíveis */
  height: 4.75rem;
  display: flex;
  align-items: center;
}
.nav::before {
  /* véu adaptativo: pega a cor do tema corrente, faz fade no scroll */
  content: "";
  position: absolute;
  inset: 0;
  background-color: var(--bg);
  opacity: 0;
  transition: opacity 0.4s var(--ease-in-out-sine);
  z-index: -1;
}
/* 0.92 deixava o texto de baixo passar como fantasma atrás do wordmark. */
.nav.is-veiled::before { opacity: 1; }
.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.wordmark {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
  color: var(--fg);
  line-height: 1;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  color: var(--fg);
  position: relative;
  padding-block: 0.25rem;
}
.nav-links a:not(.button)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 1px;
  width: 0;
  background: currentColor;
  transition: width var(--dur-fast) var(--ease-out-expo);
}
.nav-links a:not(.button):hover::after { width: 100%; }
.nav-links .nav-cta { margin-left: 0.5rem; }

/* ---------- MENU MOBILE (hambúrguer + overlay fullscreen) ---------- */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.4rem;
  width: 2.75rem;
  height: 2.75rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 130;
}
.nav-toggle span {
  display: block;
  height: 1px;
  width: 100%;
  background: var(--fg);
  transition: transform var(--dur-fast) var(--ease-out-expo), background-color var(--dur-color) var(--ease-in-out-sine);
}
html.menu-open .nav-toggle span:first-child { transform: translateY(0.2rem) rotate(45deg); }
html.menu-open .nav-toggle span:last-child { transform: translateY(-0.2rem) rotate(-45deg); }

.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 120;
  background: var(--bg);
  color: var(--fg);
  display: flex;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.45s var(--ease-in-out-quart), visibility 0.45s;
}
html.menu-open .nav-overlay { opacity: 1; visibility: visible; }
.nav-overlay nav { display: flex; flex-direction: column; gap: 0.5rem; width: 100%; }
.nav-overlay nav > a {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(2.4rem, 10vw, 3.5rem);
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--fg);
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity 0.5s var(--ease-in-out-quart), transform 0.5s var(--ease-in-out-quart);
}
html.menu-open .nav-overlay nav > a { opacity: 1; transform: none; }
html.menu-open .nav-overlay nav > a:nth-child(1) { transition-delay: 0.06s; }
html.menu-open .nav-overlay nav > a:nth-child(2) { transition-delay: 0.12s; }
html.menu-open .nav-overlay nav > a:nth-child(3) { transition-delay: 0.18s; }
html.menu-open .nav-overlay nav > a:nth-child(4) { transition-delay: 0.24s; }
html.menu-open .nav-overlay nav > a:nth-child(5) { transition-delay: 0.32s; }
.nav-overlay .overlay-folhetim {
  margin-top: 2rem;
  font-size: clamp(1.1rem, 4.5vw, 1.4rem);
  color: var(--mid);
}
/* CTA dentro do overlay: sem ele o celular abre o menu e não acha porta.
   Precisa vencer `.nav-overlay nav > a`, que pinta tudo com --fg. */
.nav-overlay nav > a.overlay-cta {
  margin-top: 2.25rem;
  align-self: flex-start;
  font-size: 0.9375rem;
  line-height: 1;
  height: 2.8125rem;
  padding: 0 1.5rem;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border-color: var(--btn-bg);
  letter-spacing: 0.01em;
}
html.menu-open { overflow: hidden; }

/* ---------- DOCK DE CONVERSÃO (só no celular) ---------- */
.cta-dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 110;
  display: none;
  padding: 0.75rem var(--grid-padding) calc(0.75rem + env(safe-area-inset-bottom, 0px));
  background: var(--preto);
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  transform: translateY(110%);
  transition: transform var(--dur-mid) var(--ease-out-expo);
}
.cta-dock.is-up { transform: none; }
.cta-dock .button { width: 100%; }
html.menu-open .cta-dock { transform: translateY(110%); }
@media (max-width: 860px) {
  .cta-dock { display: block; }
}

@media (max-width: 860px) {
  .nav-links li:not(.nav-cta-li) { display: none; }
  .nav-toggle { display: flex; }
}
@media (max-width: 480px) {
  /* a barra some, mas o caminho de conversa não: sobra o dock + o menu */
  .nav-links { display: none; }
}

/* ---------- FOOTER ---------- */
.footer {
  padding-block: clamp(4rem, 8vh, 6rem) 2.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}
.footer a:hover { color: var(--lavender); }
.footer-bottom {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--mid);
  font-size: 0.85rem;
}
@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}