/* ===================================================
   HEADER STYLES — fully responsive
   =================================================== */

.topbar {
  background: var(--navy-dark);
  color: #fff;
  font-size: 14px;
  padding: 8px 40px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 6px;
  height: 40px;
}
.topbar a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  text-decoration: none;
  font-size: 14px;
}
.topbar svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.topbar span {
  line-height: 1;
}

.mainnav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(24px, 15vw, 494px); /* base — largest screens */
  padding: 14px 40px;
  border-bottom: 1px solid #eaeef2;
  position: relative;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.logo-badge {
  width: 46px;
  height: 46px;
  background: var(--navy);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: bold;
  font-size: 20px;
  flex-shrink: 0;
}
.logo-text {
  line-height: 1.1;
  min-width: 0;
}
.logo-text .title {
  font-size: clamp(15px, 2vw, 19px);
  font-weight: 700;
  color: var(--navy);
  white-space: nowrap;
}
.logo-text .sub {
  font-size: 10px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* nav links (desktop) */
.mainnav nav > ul {
  list-style: none;
  display: flex;
  gap: clamp(14px, 2vw, 28px);
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}
.mainnav nav > ul > li > a {
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
  white-space: nowrap;
}
.mainnav nav > ul > li > a:hover {
  color: var(--teal);
}

/* ---------- Dropdown (Guidelines) — desktop ---------- */
.mainnav nav ul li.dropdown {
  position: relative;
}
.dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  background: none;
  border: none;
  font: inherit;
}
.dropdown-menu {
  list-style: none;
  margin: 0;
  padding: 6px 0;
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 8px; /* small, fixed gap */
  min-width: 240px;
  background: #fff;
  border-radius: 6px;
  box-shadow: 0 12px 28px rgba(15, 42, 68, 0.15);
  border: 1px solid #eaeef2;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.15s ease,
    visibility 0.15s ease;
  z-index: 25;
}
/* invisible bridge that closes the hover gap between link and menu, so the hover doesn't break */
.dropdown::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 8px;
}
.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu,
.dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
}
.dropdown-menu li a {
  display: block;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--navy);
  white-space: normal;
  line-height: 1.4;
}
.dropdown-menu li a:hover {
  background: #f5f7f9;
  color: var(--navy);
}

/* burger button */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  gap: 5px;
  width: 38px;
  height: 38px;
  z-index: 30;
  flex-shrink: 0;
}
.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition:
    transform 0.25s ease,
    opacity 0.25s ease,
    width 0.25s ease;
}
.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  width: 26px;
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  width: 26px;
}

/* dark backdrop behind open mobile menu */
.nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 42, 68, 0.35);
  z-index: 15;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.nav-backdrop.open {
  display: block;
  opacity: 1;
}

/* ===================================================
   RESPONSIVE BREAKPOINTS
   =================================================== */

/* --- large laptop / smaller desktop --- */
@media (max-width: 1500px) {
  .mainnav {
    gap: clamp(20px, 8vw, 260px);
  }
}

/* --- laptop / large tablet: tighten further --- */
@media (max-width: 1300px) {
  .mainnav {
    gap: clamp(16px, 5vw, 140px);
  }
}

/* --- small laptop / tablet: tighten again just before burger kicks in --- */
@media (max-width: 1100px) {
  .topbar {
    padding: 8px 24px;
  }
  .mainnav {
    padding: 14px 24px;
    gap: clamp(12px, 3vw, 80px);
  }
  .mainnav nav > ul {
    gap: 16px;
  }
}

/* --- large tablet / small laptop: tighten spacing --- */
@media (max-width: 1100px) {
  .topbar {
    padding: 8px 24px;
  }
  .mainnav {
    padding: 14px 24px;
    gap: clamp(16px, 12vw, 200px); /* smaller cap for laptop/tablet width */
  }
  .mainnav nav > ul {
    gap: 16px;
  }
}

/* --- tablet: switch to burger menu --- */
@media (max-width: 900px) {
  .topbar {
    padding: 8px 20px;
    font-size: 12px;
  }

  .mainnav {
    justify-content: flex-start; /* left-align logo + burger menu */
    gap: 0; /* no gap needed — nav is collapsed into burger */
    padding: 12px 20px;
    padding-right: 60px; /* reserve room so burger never overlaps logo */
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: flex;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
  }

  .mainnav nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    width: 100%;
    z-index: 20;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    box-shadow: 0 8px 16px rgba(15, 42, 68, 0.08);
  }

  .mainnav nav.open {
    max-height: 500px;
    overflow-y: auto;
  }

  .mainnav nav > ul {
    flex-direction: column;
    gap: 0;
    padding: 8px 20px 16px 20px;
  }

  .mainnav nav > ul > li > a {
    display: block;
    padding: 12px 4px;
    border-top: 1px solid #eaeef2;
  }

  .mainnav nav > ul > li > a:hover {
    background: #f5f7f9;
    padding-left: 10px;
  }

  /* ---------- Dropdown (Guidelines) — burger menu ---------- */
  .mainnav nav ul li.dropdown {
    display: flex;
    flex-direction: column;
  }
  .dropdown-toggle {
    display: flex;
    width: 100%;
    justify-content: space-between;
    padding: 12px 4px;
    border-top: 1px solid #eaeef2;
    color: var(--navy);
    font-weight: 600;
    font-size: 14px;
  }
  .dropdown-toggle .caret {
    transition: transform 0.2s ease;
  }
  .dropdown.open .dropdown-toggle .caret {
    transform: rotate(180deg);
  }
  /* undo desktop absolute positioning; collapse/expand inline instead */
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    background: none;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
    min-width: 0;
    margin-top: 0;
  }
  .dropdown.open .dropdown-menu {
    max-height: 300px;
  }
  .dropdown-menu li a {
    display: block;
    padding: 10px 4px 10px 24px;
    border-top: 1px solid #eaeef2;
    font-size: 13px;
    font-weight: 600;
    color: var(--navy);
  }
  .dropdown-menu li a:hover {
    background: #f5f7f9;
    color: var(--navy);
  }
}

/* --- mobile: shrink logo, tighten padding --- */
@media (max-width: 480px) {
  .logo-text .title {
    font-size: 15px;
  }
  .logo-text .sub {
    max-width: 150px;
  }
  .logo-badge {
    width: 38px;
    height: 38px;
    font-size: 16px;
  }
  .topbar span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}

/* --- very small phones --- */
@media (max-width: 360px) {
  .logo-text .sub {
    display: none;
  }
  .mainnav {
    padding: 10px 14px;
    padding-right: 54px;
  }
  .topbar {
    padding: 8px 14px;
  }
}