/* ------------------------------------------------------------------
   components · nav, botões, links, filtros
   ------------------------------------------------------------------ */

/* — nav — */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: var(--z-nav);
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  padding: clamp(.85rem, 1.5vw, 1.2rem) var(--margin);
  color: var(--grafite);
  border-bottom: 1px solid transparent;
  transition: transform var(--m-med) var(--ease-editorial), color var(--m-fast) var(--ease-standard),
              background-color var(--m-fast) var(--ease-standard), border-color var(--m-fast) var(--ease-standard);
  will-change: transform;
}
.nav.is-hidden { transform: translateY(-110%); }
.nav.is-solid { background: var(--nav-bg, var(--nevoa)); border-bottom-color: rgba(19, 24, 25, .1); }
.nav.is-dark { color: var(--nevoa); }
.nav.is-solid.is-dark { border-bottom-color: rgba(236, 238, 233, .14); }

.nav__brand { display: inline-flex; align-items: baseline; gap: .7rem; justify-self: start; }
.nav__name { font-size: 1.12rem; font-weight: 600; letter-spacing: -.03em; line-height: 1; }
.nav__tag { font-size: .66rem; font-weight: 500; font-stretch: 88%; letter-spacing: .14em; text-transform: uppercase; opacity: .6; }
.nav__links { display: flex; gap: clamp(1.1rem, 2vw, 2.2rem); }
.nav__links a { font-size: .82rem; font-weight: 450; letter-spacing: -.005em; }
.nav__cta { justify-self: end; }

@media (max-width: 899px) {
  .nav { grid-template-columns: 1fr auto; }
  .nav__links, .nav__tag { display: none; }
}

/* — link com sublinhado que corre — */
.link { position: relative; display: inline-block; padding-bottom: .1em; }
.link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: right;
  transition: transform var(--m-med) var(--ease-editorial);
}
.link:hover::after, .link:focus-visible::after { transform: scaleX(1); transform-origin: left; }

.link--arrow {
  display: inline-flex; align-items: center; gap: .6em;
  font-size: var(--fs-label); font-weight: 500; font-stretch: 88%; letter-spacing: var(--tracking-label); text-transform: uppercase;
  color: var(--fg);
}
.link--arrow span { display: inline-block; transition: transform var(--m-med) var(--ease-editorial); }
.link--arrow:hover span { transform: translateX(.4em); }

/* — botão dividido: rótulo | seta, como controle de instrumento — */
.btn {
  position: relative; display: inline-grid; grid-template-columns: auto 3.25rem; align-items: stretch;
  min-height: 52px;
  font-size: .98rem; font-weight: 500; letter-spacing: -.01em;
  background: var(--petroleo); color: var(--nevoa);
  transition: background-color var(--m-fast) var(--ease-standard), color var(--m-fast) var(--ease-standard);
}
.btn > span { display: flex; align-items: center; padding: .95rem 1.35rem; }
.btn::after {
  content: "→"; display: grid; place-items: center; font-size: 1.15rem; line-height: 1;
  border-left: 1px solid rgba(236, 238, 233, .28);
  transition: transform var(--m-med) var(--ease-editorial), background-color var(--m-fast) var(--ease-standard);
}
.btn:hover { background: var(--grafite); }
.btn:hover::after { background: rgba(236, 238, 233, .06); }

.btn--ghost {
  background: transparent; color: currentColor; box-shadow: inset 0 0 0 1px currentColor;
  min-height: 40px; grid-template-columns: auto 2.5rem; font-size: .86rem;
}
.btn--ghost > span { padding: .55rem .95rem; }
.btn--ghost::after { border-left-color: currentColor; opacity: 1; }
.btn--ghost:hover { background: var(--petroleo); color: var(--nevoa); box-shadow: inset 0 0 0 1px var(--petroleo); }
.nav.is-dark .btn--ghost:hover { background: var(--nevoa); color: var(--grafite); box-shadow: none; }

.btn--light { background: var(--nevoa); color: var(--grafite); }
.btn--light::after { border-left-color: rgba(19, 24, 25, .18); }
.btn--light:hover { background: var(--grafite); color: var(--nevoa); }
.btn--magnetic { will-change: transform; }

/* — filtros: texto com traço, nada de pílula — */
.filters { display: flex; flex-wrap: wrap; gap: .4rem 1.6rem; }
.filter {
  position: relative; padding: .45rem 0;
  font-size: .9rem; font-weight: 450; color: var(--muted);
  transition: color var(--m-fast) var(--ease-standard);
}
.filter sup { font-size: .62em; margin-left: .2em; font-variant-numeric: tabular-nums; }
.filter::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--petroleo);
  transform: scaleX(0); transform-origin: left; transition: transform var(--m-med) var(--ease-editorial);
}
.filter:hover { color: var(--fg); }
.filter[aria-pressed="true"] { color: var(--fg); }
.filter[aria-pressed="true"]::after { transform: scaleX(1); }