/* ================================================
   HEADER.CSS — Navbar e Menu Mobile
   ================================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: background 0.4s ease, box-shadow 0.4s ease;
  padding: 0;
}

/* Transparente apenas na home (sobre hero grafite) */
.header.transparent {
  background: transparent;
}

.header.transparent .nav-logo-text,
.header.transparent .nav-link,
.header.transparent .hamburger span {
  color: var(--color-white);
}

.header.transparent .nav-logo-text .logo-name {
  color: var(--color-white);
}

.header.transparent .nav-logo-text .logo-tagline {
  color: rgba(255, 255, 255, 0.6);
}

.header.transparent .btn-outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.header.transparent .btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-dark);
  border-color: var(--color-primary);
}

.header.transparent .nav-link::after {
  background: var(--color-primary);
}

/* Scrolled / solid — fundo grafite escuro */
.header.scrolled,
.header.solid {
  background: var(--color-dark);
  box-shadow: var(--shadow-nav);
}

.header.solid .nav-link,
.header.scrolled .nav-link {
  color: rgba(255, 255, 255, 0.80);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 20px 24px;
}

/* ===== LOGO ===== */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo-img {
  background: var(--color-white);
  border-radius: 8px;
  padding: 4px 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.nav-logo-img img {
  height: 36px;
  width: auto;
  display: block;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.nav-logo-text .logo-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-dark);
  transition: color 0.4s;
}

.nav-logo-text .logo-tagline {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-gray-500);
  transition: color 0.4s;
}

/* Logo sobre fundo escuro (scrolled/solid = grafite) */
.header.scrolled .logo-name,
.header.solid .logo-name {
  color: var(--color-white);
}

.header.scrolled .logo-tagline,
.header.solid .logo-tagline {
  color: var(--color-gray-300);
}

/* Hamburger — branco sobre grafite */
.header.scrolled .hamburger span,
.header.solid .hamburger span {
  background: var(--color-white);
}

/* ===== NAV LINKS ===== */
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--color-gray-700);
  transition: color 0.3s;
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s ease;
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.active {
  color: var(--color-primary);
}

.header.transparent .nav-link::after {
  background: var(--color-white);
}

.header.transparent .nav-link:hover {
  color: var(--color-white);
}

/* ===== CTA BUTTON ===== */
.nav-cta {
  padding: 10px 24px;
  font-size: 0.88rem;
}

/* ===== HAMBURGER ===== */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: var(--transition-default);
}

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

.hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

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

/* ===== MOBILE MENU ===== */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 320px;
  height: 100vh;
  background: var(--color-white);
  box-shadow: -8px 0 30px rgba(0, 0, 0, 0.15);
  z-index: 1000;
  transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  padding: 90px 32px 40px;
  overflow-y: auto;
}

.mobile-menu.open {
  right: 0;
}

.mobile-menu-links {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-menu-link {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--color-gray-700);
  padding: 14px 0;
  border-bottom: 1px solid var(--color-gray-100);
  transition: color 0.3s, padding-left 0.3s;
}

.mobile-menu-link:hover,
.mobile-menu-link.active {
  color: var(--color-primary);
  padding-left: 8px;
}

.mobile-menu-cta {
  margin-top: 32px;
  width: 100%;
  text-align: center;
  justify-content: center;
}

/* ===== BACKDROP ===== */
.menu-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.65);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s, visibility 0.4s;
  backdrop-filter: blur(2px);
}

.menu-backdrop.visible {
  opacity: 1;
  visibility: visible;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1023px) {
  .nav-links {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .nav-container {
    padding: 16px 24px;
  }
}

@media (max-width: 767px) {
  .nav-logo-text .logo-tagline {
    display: none;
  }
}