/* =====================================================================
   ByteBlaze IT Solutions — Header & navigation
   ===================================================================== */

/* ---------- Top utility bar ---------- */
.topbar {
  background: var(--color-navy);
  color: #cdd9e7;
  font-size: 0.85rem;
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 9px;
  flex-wrap: wrap;
}
.topbar__contact { display: flex; gap: 22px; flex-wrap: wrap; }
.topbar__contact a { color: #cdd9e7; display: inline-flex; align-items: center; gap: 7px; }
.topbar__contact a:hover { color: var(--color-primary); }
.topbar__contact svg { width: 15px; height: 15px; }
.topbar__social { display: flex; gap: 14px; }
.topbar__social a { color: #cdd9e7; display: inline-flex; }
.topbar__social a:hover { color: var(--color-primary); }
.topbar__social svg { width: 16px; height: 16px; }

/* ---------- Main header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-block: 12px;
}

/* logo (image already contains the company name — no text needed) */
.brand { display: inline-flex; align-items: center; }
.brand__logo { height: 50px; width: auto; }

/* navigation */
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav__list { display: flex; align-items: center; gap: 26px; }
.main-nav__list a {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-heading);
  padding: 6px 0;
  position: relative;
}
.main-nav__list a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}
.main-nav__list a:hover { color: var(--color-primary-dark); }
.main-nav__list a:hover::after { width: 100%; }

/* ---------- Services dropdown ---------- */
.has-dropdown { position: relative; }

.dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.95rem;
  line-height: 1.65;          /* match the text links so it sits on the same line */
  color: var(--color-heading);
  background: none;
  border: 0;
  margin: 0;
  padding: 6px 0;
  cursor: pointer;
}
.dropdown-toggle:hover { color: var(--color-primary-dark); }
.dropdown-toggle .caret { width: 14px; height: 14px; transition: transform var(--transition); }
.has-dropdown:hover .dropdown-toggle .caret,
.has-dropdown.is-open .dropdown-toggle .caret { transform: rotate(180deg); }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  min-width: 232px;
  list-style: none;
  margin: 0;
  padding: 8px 0;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 60;
}
/* invisible bridge so the menu stays open while crossing the gap */
.dropdown-menu::before { content: ""; position: absolute; top: -12px; left: 0; right: 0; height: 12px; }

.has-dropdown:hover .dropdown-menu,
.has-dropdown:focus-within .dropdown-menu,
.has-dropdown.is-open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown-menu li { width: 100%; }
.dropdown-menu a { display: block; padding: 10px 18px; font-size: 0.92rem; white-space: nowrap; }
.dropdown-menu a::after { display: none; }            /* cancel underline animation */
.dropdown-menu a:hover { background: var(--color-primary-tint); color: var(--color-primary-dark); }

/* mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  margin-inline: auto;
  background: var(--color-navy);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Mobile ---------- */
@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    padding: 8px 20px 18px;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    transition: max-height var(--transition), visibility var(--transition);
  }
  .main-nav.is-open { max-height: 85vh; overflow-y: auto; visibility: visible; }
  .main-nav__list { flex-direction: column; gap: 0; width: 100%; }
  .main-nav__list a { display: block; padding: 13px 0; border-bottom: 1px solid var(--color-border); }
  .main-nav__list a::after { display: none; }
  .main-nav .btn { margin-top: 14px; text-align: center; }

  /* dropdown becomes an inline accordion on mobile */
  .has-dropdown { width: 100%; }
  .dropdown-toggle {
    display: flex;
    justify-content: space-between;
    width: 100%;
    padding: 13px 0;
    border-bottom: 1px solid var(--color-border);
  }
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    min-width: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: var(--color-surface-alt);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }
  .dropdown-menu::before { display: none; }
  .has-dropdown.is-open .dropdown-menu { max-height: 420px; }
  .dropdown-menu a { padding: 12px 0 12px 18px; }
}

@media (max-width: 540px) {
  .topbar__contact { gap: 14px; }
  .topbar__social { display: none; }
  .brand__logo { height: 42px; }
}