/* ============================================================
   Top Navigation — Unified blur via #mobileNavBlur
   ============================================================ */

/* Topnav is transparent; blur + tint handled by #mobileNavBlur */
.topnav {
  font-family: 'Source Sans 3', sans-serif;
  overflow: hidden;
  position: fixed;
  z-index: 999;
  width: 100%;
  min-height: 48px;
  background-color: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

/* Independent blur layer (injected by JS, works on all viewports) */
#mobileNavBlur {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 48px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background-color: rgba(255, 255, 255, 0.4);
  z-index: 997;
  transition: height 0.35s ease-in-out;
  pointer-events: none;
}

.topnav #myLinks {
  display: inline;
}

/* Sliding hover indicator */
.nav-slider {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background-color: #13294B;
  border-radius: 4px;
  pointer-events: none;
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              width 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.2s ease;
  z-index: 0;
}

.topnav:hover .nav-slider {
  opacity: 1;
}

/* Hamburger icon hidden on desktop */
.topnav a.icon {
  display: none;
}

/* Logo image */
.topnav img {
  margin-bottom: 0;
  margin-top: 10pt;
  margin-left: 30%;
}

/* Navigation links */
.topnav a.normal,
.topnav a.right {
  float: right;
  color: #13294B;
  font-family: inherit;
  text-align: center;
  padding: 10px 22px;
  text-decoration: none;
  font-size: 17px;
  transition: color 0.25s ease;
  position: relative;
  z-index: 1;
}

.topnav a.normal:hover,
.topnav a.normal.slider-active {
  color: #fff;
}

.topnav a.right {
  margin-right: 0;
}

/* Align the rightmost nav item with the 1100px centered wrapper */
@media print, screen and (min-width: 1101px) {
  .topnav a.right {
    margin-right: calc(50% - 550px);
  }
}

/* Responsive margin breakpoints for logo */
@media print, screen and (max-width: 1000px) {
  .topnav img      { margin-left: 3%; }
  .topnav a.normal { padding: 10px 5px; }
}

@media print, screen and (max-width: 1200px) and (min-width: 1001px) {
  .topnav img      { margin-left: 6%; }
}

@media print, screen and (max-width: 1400px) and (min-width: 1201px) {
  .topnav img      { margin-left: 12%; }
}

@media print, screen and (max-width: 1600px) and (min-width: 1401px) {
  .topnav img      { margin-left: 16%; }
}

@media print, screen and (max-width: 1800px) and (min-width: 1601px) {
  .topnav img      { margin-left: 19%; }
}

@media print, screen and (max-width: 2000px) and (min-width: 1801px) {
  .topnav img      { margin-left: 22%; }
}

/* ============================================================
   Mobile breakpoint (max-width: 1100px)
   ============================================================ */
@media print, screen and (max-width: 1100px) {

  .topnav {
    overflow: visible;
  }

  .nav-slider {
    display: none !important;
  }

  /* Dropdown menu — use height transition for sync with blur layer */
  .topnav #myLinks {
    position: fixed;
    top: 48px;
    left: 0;
    width: 100%;
    display: flex;
    flex-direction: column-reverse;
    height: 0;
    overflow: hidden;
    transition: height 0.35s ease-in-out;
    z-index: 998;
  }

  /* Mobile nav links */
  .topnav a.normal,
  .topnav a.right {
    color: #13294B;
    font-family: inherit;
    float: none;
    padding: 14px 16px;
    text-decoration: none;
    font-size: 17px;
    display: block;
    transition: background-color 0.2s ease, color 0.2s ease;
    margin-right: 0;
  }

  .topnav a.normal:hover,
  .topnav a.normal.slider-active {
    background-color: #13294B;
    color: #fff;
  }

  /* Hamburger icon */
  .topnav a.icon {
    color: #13294B;
    font-family: inherit;
    height: 48px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    position: absolute;
    right: 0;
    top: 0;
    margin-right: 5%;
    z-index: 2;
  }

  .topnav a.icon .icon-wrap {
    position: relative;
    display: inline-block;
    width: 1em;
    height: 1em;
  }

  .topnav a.icon .icon-bars,
  .topnav a.icon .icon-xmark {
    position: absolute;
    top: 0;
    left: 0;
    transition: opacity 0.25s ease, transform 0.25s ease;
  }

  .topnav a.icon .icon-bars   { opacity: 1; transform: rotate(0deg); }
  .topnav a.icon .icon-xmark  { opacity: 0; transform: rotate(-90deg); }

  .topnav a.icon.active .icon-bars   { opacity: 0; transform: rotate(90deg); }
  .topnav a.icon.active .icon-xmark  { opacity: 1; transform: rotate(0deg); }
}