/* ==========================================================================
   ORBELO — Componentes
   ========================================================================== */

/* ------------------------------- Botões ---------------------------------- */
.btn {
  --btn-pad-y: 15px;
  --btn-pad-x: 26px;
  position: relative;
  display: inline-flex; align-items: center; gap: 10px;
  padding: var(--btn-pad-y) var(--btn-pad-x);
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  font-size: var(--fs-small);
  font-weight: 400;
  letter-spacing: -0.005em;
  color: var(--text);
  overflow: hidden;
  isolation: isolate;
  transition: border-color var(--d-sm) var(--e-out), color var(--d-sm) var(--e-out),
              transform var(--d-sm) var(--e-out);
  will-change: transform;
}
.btn::before {
  content: "";
  position: absolute; inset: 0;
  z-index: -1;
  background: var(--accent);
  transform: translate3d(0, 101%, 0);
  transition: transform .55s var(--e-out);
}
.btn:hover::before,
.btn:focus-visible::before { transform: translate3d(0, 0, 0); }
.btn:hover, .btn:focus-visible { border-color: var(--accent); color: var(--on-accent); }

.btn__arrow {
  display: inline-grid; place-items: center;
  transition: transform var(--d-sm) var(--e-out);
}
.btn:hover .btn__arrow { transform: translate(3px, -3px); }

.btn--primary {
  border-color: transparent;
  background: var(--text);
  color: var(--bg);
}
.btn--primary::before { background: var(--accent); }
.btn--primary:hover, .btn--primary:focus-visible { color: var(--on-accent); border-color: transparent; }

.btn--ghost { border-color: var(--line); color: var(--text-2); }
.btn--ghost:hover, .btn--ghost:focus-visible { color: var(--text); }

.btn--sm  { --btn-pad-y: 11px; --btn-pad-x: 20px; font-size: 0.78rem; }
.btn--lg  { --btn-pad-y: 20px; --btn-pad-x: 36px; font-size: 0.95rem; }

/* --------------------------- Link sublinhado ----------------------------- */
.link-underline {
  position: relative;
  color: var(--text-2);
  transition: color var(--d-sm) var(--e-out);
}
.link-underline::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -3px;
  height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: right;
  transition: transform .5s var(--e-out);
}
.link-underline:hover { color: var(--text); }
.link-underline:hover::after { transform: scaleX(1); transform-origin: left; }

/* -------------------------------- Navbar --------------------------------- */
.nav {
  position: fixed; inset: 0 0 auto 0;
  z-index: 800;
  height: var(--nav-h);
  display: flex; align-items: center;
  border-bottom: 1px solid transparent;
  transition: background var(--d-md) var(--e-out), border-color var(--d-md) var(--e-out),
              backdrop-filter var(--d-md) var(--e-out), transform .5s var(--e-out);
}
.nav__inner {
  width: 100%; max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 32px;
}

.nav.is-stuck {
  background: var(--nav-bg);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom-color: var(--line);
}
.nav.is-hidden { transform: translateY(-101%); }

.nav__logo img { width: clamp(108px, 11vw, 138px); height: auto; }

/* Logo em tinta escura no tema claro, logo branca no tema escuro.
   Substitua os dois arquivos mantendo os nomes. */
.logo--on-dark  { display: none; }
:root[data-theme="dark"] .logo--on-light,
.theme-dark .logo--on-light { display: none; }
:root[data-theme="dark"] .logo--on-dark,
.theme-dark .logo--on-dark  { display: block; }
.nav__logo { transition: opacity var(--d-sm) var(--e-out); }
.nav__logo:hover { opacity: .72; }

.nav__links {
  display: flex; align-items: center; gap: clamp(20px, 2.4vw, 40px);
  margin-left: auto;
}
.nav__links a {
  position: relative;
  font-size: 0.83rem;
  color: var(--text-2);
  padding: 6px 0;
  transition: color var(--d-sm) var(--e-out);
}
.nav__links a::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--accent);
  transform: scaleX(0); transform-origin: right;
  transition: transform .45s var(--e-out);
}
.nav__links a:hover { color: var(--text); }
.nav__links a:hover::after,
.nav__links a.is-active::after { transform: scaleX(1); transform-origin: left; }
.nav__links a.is-active { color: var(--text); }

.nav__actions { display: flex; align-items: center; gap: 14px; }

/* -------------------------------- Burger --------------------------------- */
.burger {
  display: none;
  position: relative;
  width: 42px; height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transition: border-color var(--d-sm) var(--e-out);
}
.burger span {
  position: absolute; left: 50%; top: 50%;
  width: 16px; height: 1px;
  background: var(--text);
  transform-origin: center;
  transition: transform .5s var(--e-out), opacity .3s var(--e-out);
}
.burger span:nth-child(1) { transform: translate(-50%, -4px); }
.burger span:nth-child(2) { transform: translate(-50%, 3px); width: 11px; }
.burger:hover { border-color: var(--accent); }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translate(-50%, 0) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { transform: translate(-50%, 0) rotate(-45deg); width: 16px; }

/* ----------------------------- Menu mobile -------------------------------- */
.menu {
  position: fixed; inset: 0;
  z-index: 790;
  display: flex; flex-direction: column; justify-content: center;
  padding: calc(var(--nav-h) + 24px) var(--gutter) 40px;
  background: var(--bg-raised);
  clip-path: inset(0 0 100% 0);
  transition: clip-path .85s var(--e-inout);
}
.menu[hidden] { display: none; }
.menu.is-open { clip-path: inset(0 0 0 0); }

.menu::before {
  content: "";
  position: absolute; inset: auto -20% -30% -20%;
  height: 70%;
  background: radial-gradient(ellipse at 50% 100%, var(--accent-14), transparent 65%);
  pointer-events: none;
}

.menu__nav { display: flex; flex-direction: column; gap: 4px; position: relative; }
.menu__nav a {
  display: flex; align-items: baseline; gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: clamp(2rem, 11vw, 3.4rem);
  font-weight: 200;
  letter-spacing: var(--tr-snug);
  opacity: 0; transform: translateY(24px);
  transition: opacity .6s var(--e-out), transform .6s var(--e-out), color var(--d-sm) var(--e-out);
}
.menu.is-open .menu__nav a { opacity: 1; transform: none; }
.menu.is-open .menu__nav a:nth-child(1) { transition-delay: .18s; }
.menu.is-open .menu__nav a:nth-child(2) { transition-delay: .25s; }
.menu.is-open .menu__nav a:nth-child(3) { transition-delay: .32s; }
.menu.is-open .menu__nav a:nth-child(4) { transition-delay: .39s; }
.menu__nav a em {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tr-label);
  color: var(--accent-text);
}
.menu__nav a:active { color: var(--accent-text); }

.menu__foot {
  position: relative;
  margin-top: auto; padding-top: 32px;
  display: flex; flex-wrap: wrap; gap: 16px 28px; align-items: center; justify-content: space-between;
  font-size: var(--fs-small);
  color: var(--text-2);
  opacity: 0;
  transition: opacity .6s var(--e-out) .5s;
}
.menu.is-open .menu__foot { opacity: 1; }
.menu__social { display: flex; gap: 20px; }

/* --------------------------- Cabeçalho de seção --------------------------- */
.sec-head { margin-bottom: clamp(48px, 7vw, 96px); }
.sec-head__title {
  margin-top: 22px;
  font-size: var(--fs-title);
  line-height: 1.02;
  letter-spacing: var(--tr-tight);
}
.sec-head--row {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.sec-head__note {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-3);
  max-width: 26ch;
}

/* ----------------------------- Scroll hint -------------------------------- */
.scroll-hint {
  display: inline-flex; align-items: center; gap: 14px;
  color: var(--text-3);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  transition: color var(--d-sm) var(--e-out);
}
.scroll-hint:hover { color: var(--text); }
.scroll-hint__rail {
  position: relative;
  width: 1px; height: 46px;
  background: var(--line-strong);
  overflow: hidden;
}
.scroll-hint__dot {
  position: absolute; inset-inline: -1px; top: 0;
  height: 16px;
  background: var(--accent);
  animation: railRun 2.4s var(--e-inout) infinite;
}
@keyframes railRun {
  0%   { transform: translateY(-110%); }
  55%  { transform: translateY(190%); }
  100% { transform: translateY(190%); }
}

/* ------------------------- Marcação de placeholder ------------------------ */
[data-placeholder] { position: relative; }