/* ==========================================================================
   Zosma Digital - Header & Navigation Styles
   ========================================================================== */

header.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow var(--transition-normal), background var(--transition-normal);
}

header.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  background: rgba(255, 255, 255, 0.97);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo-link {
  display: flex;
  align-items: center;
  height: 42px;
  text-decoration: none;
  flex: none;
}

.logo-link img {
  height: 42px;
  width: auto;
  display: block;
}

nav.main-nav {
  display: flex;
  align-items: center;
  gap: 34px;
}

nav.main-nav a {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  color: var(--text-dark);
  position: relative;
  padding: 8px 0;
  transition: color var(--transition-fast);
}

nav.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

nav.main-nav a:hover {
  color: var(--green);
}

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

nav.main-nav a.active,
nav.main-nav a[aria-current="page"] {
  color: var(--green);
  font-weight: 600;
}

nav.main-nav a.active::after,
nav.main-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-cta .btn {
  padding: 10px 22px;
  font-size: 14px;
}

.menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  border-radius: var(--radius-sm);
  color: var(--black);
  z-index: 1010;
}

.menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  margin: 5px 0;
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* Mobile Navigation */
@media (max-width: 960px) {
  .menu-btn {
    display: block;
  }

  .nav-cta .btn-ghost {
    display: none;
  }

  nav.main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    height: calc(100vh - var(--header-height));
    background: #ffffff;
    flex-direction: column;
    align-items: flex-start;
    padding: 36px 28px;
    gap: 20px;
    transform: translateX(100%);
    transition: transform var(--transition-smooth);
    overflow-y: auto;
    border-top: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    z-index: 1005;
  }

  nav.main-nav.open {
    transform: translateX(0);
  }

  nav.main-nav a {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 600;
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
  }

  nav.main-nav a::after {
    display: none;
  }

  /* Hamburger to X animation */
  .menu-btn[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .menu-btn[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }
  .menu-btn[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}