/* ===== Barra ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  background: color-mix(in srgb, var(--background) 85%, transparent);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

.site-header__inner {
  max-width: 72rem;            /* 1152px */
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
}

/* ===== Logo ===== */
.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--foreground);
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.375rem;
  background: var(--ruby);
  color: var(--ruby-foreground);
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1;
}

.brand__name {
  display: block;
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1;
}

/* ===== Nav ===== */
.main-nav {
  display: none;               /* escondida em ecrãs pequenos */
  align-items: center;
  gap: 1.75rem;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

.main-nav a {
  color: var(--ink-soft);
  text-decoration: none;
}
.main-nav a:hover,
.main-nav a.is-active { color: var(--foreground); }
.main-nav a.is-active { font-weight: 500; }

/* ===== Ações ===== */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header-actions .button_to {      /* button_to insere um form; neutraliza-o */
  margin: 0;
  display: inline;
}

.btn-signin {
  display: none;               /* escondido em mobile */
  padding: 0.5rem 0.75rem;
  border: none;
  background: none;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-soft);
  text-decoration: none;
  cursor: pointer;
}
.btn-signin:hover { color: var(--foreground); }

.user-link {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
}
.user-link:hover { color: var(--foreground); }

.btn-signup {
  display: inline-block;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 9999px;
  background: var(--foreground);
  color: var(--background);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 160ms ease;
}
.btn-signup:hover { background: var(--ruby-deep); }

/* Botões/links com transição suave */
.site-header button,
.site-header a {
  transition: color 160ms ease, background-color 160ms ease;
}

/* ===== Responsivo ===== */
@media (min-width: 768px) {
  .main-nav { display: flex; }
}

@media (min-width: 640px) {
  .btn-signin { display: block; }
}