/* header.css — barra fixa translúcida sobre o hero escuro */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-header);
  background: rgba(26, 58, 39, 0.72);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(159, 217, 184, 0.14);
}

.site-header__inner {
  max-width: 1180px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
  padding: 14px clamp(16px, 4vw, 32px);
}

.brand { display: flex; align-items: center; }
.brand__logo { height: 34px; width: auto; }

.nav { display: flex; align-items: center; gap: 6px; }

.nav__link {
  padding: 8px 14px;
  border-radius: var(--r-sm);
  color: var(--c-green-100);
  font-size: var(--fs-15);
  font-weight: var(--fw-medium);
  transition: background var(--dur) var(--ease), color 0.2s;
}
.nav__link:hover { background: rgba(255, 255, 255, 0.08); color: #fff; }

.btn-demo {
  margin-left: 10px;
  padding: 10px 20px;
  border-radius: var(--r-sm);
  background: var(--c-white);
  color: var(--c-dark);
  font-size: var(--fs-15);
  font-weight: var(--fw-semi);
  transition: transform 0.2s var(--ease), box-shadow 0.2s;
}
.btn-demo:hover { transform: translateY(-1px); box-shadow: 0 8px 22px rgba(0, 0, 0, 0.28); }

.btn-login {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--r-sm);
  border: 1px solid rgba(159, 217, 184, 0.45);
  color: var(--c-green-50);
  font-size: var(--fs-15);
  font-weight: var(--fw-semi);
  transition: background 0.2s, border-color 0.2s;
}
.btn-login:hover { background: rgba(159, 217, 184, 0.1); border-color: rgba(159, 217, 184, 0.7); }
.btn-login .ph-bold { font-size: 17px; }

/* ── Hamburger (mobile) ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--r-sm);
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--c-green-50);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.2s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Responsivo ── */
@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px clamp(16px, 4vw, 32px) 20px;
    background: rgba(26, 58, 39, 0.97);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(159, 217, 184, 0.14);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
  }
  .nav.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav__link { padding: 12px 14px; font-size: var(--fs-16); }
  .btn-demo { margin-left: 0; margin-top: 6px; text-align: center; }
  .btn-login { justify-content: center; margin-top: 2px; }
}