/* ============================================================================
   HEADER E NAVEGAÇÃO
   ============================================================================ */

header {
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

/* LOGO */
.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  text-decoration: none;
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--font-size-lg);
  transition: color var(--transition-base);
}

.logo:hover {
  color: var(--color-secondary);
}

.logo-img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}

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

.logo-text-main {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-primary);
}

.logo-text-sub {
  font-size: var(--font-size-xs);
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* NAVEGAÇÃO */
nav {
  display: flex;
  gap: var(--spacing-2xl);
}

nav a {
  color: var(--color-text-dark);
  font-weight: 500;
  position: relative;
  padding-bottom: 4px;
  transition: color var(--transition-base);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-secondary);
  transition: width var(--transition-base);
}

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

nav a:hover::after {
  width: 100%;
}

/* BOTÃO DE CONTATO NO HEADER */
.btn-contact-header {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-contact-header:hover {
  background-color: var(--color-secondary);
  box-shadow: var(--shadow-md);
}

/* MENU MOBILE */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  cursor: pointer;
  color: var(--color-primary);
  padding: var(--spacing-sm);
}

.menu-toggle:hover {
  color: var(--color-secondary);
}

/* RESPONSIVIDADE */
@media (max-width: 768px) {
  .header-content {
    padding: var(--spacing-md) var(--spacing-md);
  }

  nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    gap: var(--spacing-md);
    border-top: 1px solid var(--color-border);
  }

  nav.active {
    display: flex;
  }

  nav a {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
  }

  nav a:last-child {
    border-bottom: none;
  }

  .menu-toggle {
    display: block;
  }

  .btn-contact-header {
    display: block;
    text-align: center;
    width: 100%;
    margin-top: var(--spacing-md);
  }

  .logo-img {
    width: 40px;
    height: 40px;
  }

  .logo-text {
    display: none;
  }

  .logo {
    font-size: var(--font-size-base);
  }
}