/* ============================================================
   COMPONENTES — Header, navegação, menu mobile e footer
   ============================================================ */

/* ---------- Header fixo ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(21, 14, 14, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s ease, background-color 0.3s ease;
}

.header.is-scrolled {
  background: rgba(21, 14, 14, 0.9);
  box-shadow: 0 10px 40px -15px rgba(0, 0, 0, 0.8);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.brand span {
  color: var(--highlight);
}

/* ---------- Navegação desktop ---------- */
.nav-desktop {
  display: none;
  align-items: center;
  gap: 2rem;
}

.nav-desktop a {
  position: relative;
  padding: 0.5rem 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.25s ease;
}

.nav-desktop a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--highlight), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease-spring);
}

.nav-desktop a:hover {
  color: var(--text);
}

.nav-desktop a:hover::after {
  transform: scaleX(1);
}

/* ---------- Botão hambúrguer ---------- */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 48px;
  height: 48px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.nav-toggle:hover {
  border-color: var(--accent-hover);
  background: var(--accent-soft);
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform 0.3s var(--ease-spring), opacity 0.2s ease;
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Menu mobile ---------- */
.mobile-menu {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: 99;
  display: flex;
  flex-direction: column;
  padding: 2rem 1.5rem 3rem;
  background: rgba(21, 14, 14, 0.97);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transform: translateX(100%);
  visibility: hidden;
  transition: transform 0.4s var(--ease-spring), visibility 0s linear 0.4s;
}

.mobile-menu.is-open {
  transform: translateX(0);
  visibility: visible;
  transition-delay: 0s;
}

.mobile-menu nav {
  display: flex;
  flex-direction: column;
}

.mobile-menu a:not(.btn) {
  display: flex;
  align-items: center;
  min-height: 56px;
  padding: 0.75rem 0.5rem;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  transition: color 0.25s ease, padding-left 0.25s ease;
}

.mobile-menu a:not(.btn):hover,
.mobile-menu a:not(.btn):active {
  color: var(--highlight);
  padding-left: 1rem;
}

body.menu-open {
  overflow: hidden;
}

/* ---------- Footer ---------- */
.footer {
  padding: 3.5rem 0 2.5rem;
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
}

.footer__content {
  display: grid;
  gap: 2rem;
}

.footer__brand p {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer__links,
.footer__socials {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
}

.footer__links a,
.footer__socials a {
  color: var(--muted);
  font-size: 0.95rem;
  padding: 0.35rem 0;
  transition: color 0.25s ease;
}

.footer__links a:hover,
.footer__socials a:hover {
  color: var(--highlight);
}