header {
  font-family: "Roboto-Regular";
  background: #ffffff;
  padding: 20px 0;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
}
header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(to right, #4cebd1, #1678b4);
}
.header-row {
  display: flex;
  align-items: center;
  width: 90%;
  margin: 0 auto;
}
.header-logo-col {
  display: flex;
  align-items: center;
}
.header-logo-img {
  height: auto;
  width: auto;
}
.header-right-col {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.header-top-action {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin-bottom: 30px;
}
.header-helpline-group {
  display: flex;
  align-items: center;
  gap: 15px;
}
.header-helpline-img {
  height: auto;
  width: auto;
  z-index: 0;
}
.header-helpline-text {
  font-family: "Roboto-Regular";
  font-size: 20px;
  color: #dc1f26;
  background-color: #dfe4e8;
  font-weight: 600;
  padding: 6px 12px 6px 20px;
  border-radius: 0 20px 20px 0;
  margin-left: -32px;
}
.header-book-btn {
  background: linear-gradient(90deg, #104c97, #15b9c5);
  color: #ffffff;
  font-family: "Roboto-Regular";
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  padding: 8px 24px;
  border-radius: 25px;
  transition: opacity 0.3s ease;
}
.header-book-btn:hover {
  opacity: 0.9;
  color: #ffffff;
}
.header-nav {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}
.header-nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 35px;
  padding-left: 80px;
}
.header-nav-list li {
  display: flex;
  align-items: center;
  position: relative;
}
.header-nav-list li a {
  font-family: "Roboto-Medium";
  font-size: 16px;
  color: #144e97;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.3s ease;
  padding: 10px 0;
}
.header-nav-list li a:hover {
  color: #15b9c5;
}
.header-nav-list li a i {
  font-size: 12px;
  margin-left: 4px;
  vertical-align: middle;
}
.header-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #144e97;
  border-top: 4px solid #15b9c5;
  min-width: 180px;
  padding: 8px 0;
  list-style: none;
  margin: 0;
  display: none;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  z-index: 1050;
}
.header-has-dropdown:hover .header-dropdown-menu {
  display: block;
}
.header-dropdown-menu li {
  margin: 0;
  display: block;
}
.header-dropdown-menu li a {
  color: #ffffff !important;
  padding: 6px 20px;
  display: block;
  text-transform: none;
  font-size: 15px;
}
.header-dropdown-menu li a:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: #ffffff !important;
}
.header-dropdown-2col {
  column-count: 2;
  column-gap: 20px;
  min-width: 550px;
  padding: 6px 10px;
}
.header-dropdown-2col li {
  break-inside: avoid-column;
}
.header-dropdown-2col li a {
  padding: 5px 15px;
  font-size: 15px;
}
.header-search-container {
  display: flex;
  align-items: center;
  margin-left: auto;
  position: relative; /* enable absolute positioned dropdown */
}
  .header-search-input {
    width: 0;
    padding: 0;
    border: none;
    border-bottom: 1px solid transparent;
    outline: none;
    background: transparent;
    transition:
      width 0.4s ease,
      padding 0.4s ease,
      border-color 0.4s ease;
    font-family: "Roboto-Regular";
    font-size: 14px;
    color: #333;
  }
  .header-search-container.active .header-search-input {
    width: 180px; 
    padding: 0 10px;
    border-bottom: 1px solid #144e97;
  }
/* Search dropdown styling similar to International Patients cards */
.header-search-results {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 350px;
  overflow-y: auto;
  background: #fff;
  border: 1px solid #ccc;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  z-index: 1000;
  margin-top: 6px;
}

.header-search-results::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 20px; /* align with input */
  border-width: 0 8px 8px 8px;
  border-style: solid;
  border-color: transparent transparent #fff transparent;
  filter: drop-shadow(0 -2px 2px rgba(0,0,0,0.1));
}

.header-search-results a {
  display: block;
  padding: 8px 12px;
  color: #333;
  text-decoration: none;
  border-radius: 4px;
}

.header-search-results a:hover {
  background: #f0f0f0;
}

.header-search-icon {
  font-size: 20px;
  color: #144e97;
  cursor: pointer;
}
.header-hamburger {
  margin-left: 20px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 19px;
  width: 30px;
}
.header-hamburger .header-hamburger-bar {
  display: block;
  height: 3px;
  width: 100%;
  background-color: #144e97;
  border-radius: 2px;
}
/* Sidebar Menu */
.header-sidebar-menu {
  position: fixed;
  top: 0;
  right: -320px;
  width: 320px;
  height: 100vh;
  background-color: #ffffff;
  box-shadow: -2px 0 15px rgba(0, 0, 0, 0.2);
  z-index: 2000;
  transition: right 0.4s ease;
  padding: 10px 20px;
}
.header-sidebar-menu.active {
  right: 0;
}
.header-sidebar-close {
  font-size: 40px;
  color: #144e97;
  cursor: pointer;
  text-align: right;
  line-height: 1;
  margin-bottom: 30px;
}
.header-sidebar-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.header-sidebar-nav-list li {
  margin-bottom: 25px;
}
.header-sidebar-nav-list li a {
  font-family: "Roboto-Regular";
  font-size: 18px;
  color: #144e97;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.3s ease;
}
.header-sidebar-nav-list li a:hover {
  color: #15b9c5;
}
.header-sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1999;
  visibility: hidden;
  opacity: 0;
  transition:
    opacity 0.4s ease,
    visibility 0.4s ease;
}
.header-sidebar-overlay.active {
  visibility: visible;
  opacity: 1;
}

/* ==========================================
   Responsive Header Media Queries
   ========================================== */
@media (max-width: 1800px) {
  .header-logo-img { max-width: 95%; }
  .header-helpline-text { font-size: 19px; }
  .header-book-btn { font-size: 15px; padding: 8px 22px; }
  .header-nav-list { gap: 25px; padding-left: 0px; }
}

@media (max-width: 1700px) {
  .header-logo-img { max-width: 90%; }
  .header-helpline-text { font-size: 18px; }
  .header-book-btn { font-size: 15px; padding: 8px 20px; }
  .header-helpline-img { max-width: 95%; }
  .header-nav-list { gap: 20px; }
}

@media (max-width: 1600px) {
  .header-logo-img { max-width: 90%; }
  .header-helpline-text { font-size: 17.5px; }
  .header-book-btn { font-size: 14.5px; padding: 8px 18px; }
  .header-helpline-img { max-width: 90%; }
  .header-nav-list { gap: 15px; }
}

@media (max-width: 1550px) {
  .header-logo-img { max-width: 90%; }
  .header-helpline-text { font-size: 17.2px; }
  .header-book-btn { font-size: 14.2px; padding: 7px 17px; }
  .header-helpline-img { max-width: 88%; }
  .header-nav-list { gap: 12px; }
  .header-search-container.active .header-search-input {
  width: 160px; }
}

@media (max-width: 1500px) {
  .header-logo-img { max-width: 90%; }
  .header-helpline-text { font-size: 17px; }
  .header-book-btn { font-size: 14px; padding: 7px 16px; }
  .header-helpline-img { max-width: 85%; height: 40px; }
  .header-nav-list { gap: 12px;}
  .header-search-container.active .header-search-input {
  width: 140px; }
}
@media (max-width: 1440px) {
  .header-row { width: 95%;}
  .header-logo-img { max-width: 90%; }
   .header-top-action { margin-bottom: 25px;}
  .header-helpline-text { font-size: 16px; }
  .header-book-btn { font-size: 13.5px; padding: 7px 14px; }
  .header-helpline-img { max-width: 80%; }
  .header-nav-list { gap: 12px;}
  .header-nav-list li a { font-size: 15px; }
  .header-nav-list li a i { margin-left: 2px;}
  .header-search-icon { font-size: 19px;}
  .header-hamburger { margin-left: 10px;}
  .header-search-container.active .header-search-input {
  width: 130px; }
}

@media (max-width: 1366px) {
  .header-logo-img { max-width: 85%; }
   .header-top-action { margin-bottom: 20px;}
  .header-helpline-text { font-size: 16px; margin-left: -28px; }
  .header-book-btn { font-size: 13px; padding: 6px 14px; }
  .header-helpline-img { max-width: 75%; }
  .header-nav-list { gap: 12px; }
  .header-nav-list li a { font-size: 14px; }
  .header-search-container.active .header-search-input {
  width: 120px; }
  .header-search-icon { font-size: 18px;}
}

@media (max-width: 1280px) {
  .header-logo-img { max-width: 82%; }
  .header-helpline-text { font-size: 15.5px; margin-left: -28px; }
  .header-book-btn { font-size: 14px; padding: 6px 13px; }
  .header-helpline-img { max-width: 72%; }
  .header-nav-list { gap: 12px; padding-left: 5px; }
  .header-nav-list li a { font-size: 14px; }
  .header-search-container.active .header-search-input {
  width: 100px; }
}

@media (max-width: 1200px) {
  header { padding: 18px 0; }
  .header-row {
    width: 97%;
  }
  .header-logo-img { 
    max-width: 80%; 
    content: url("brains-logo-footer.webp");
    aspect-ratio: 287 / 137;
    object-fit: contain;
  }
  .header-top-action { margin-bottom: 20px; justify-content: end;}
  .header-helpline-text { font-size: 14px; padding: 5px 10px 5px 12px; margin-left: -26px; }
  .header-book-btn { font-size: 13px; padding: 5px 10px; }
  .header-helpline-img { max-width: 65%; height: 34px;}
  .header-nav-list { gap: 10px; padding-left: 0px; margin-left: auto; }
  .header-nav-list li a { font-size: 14px; }
  .header-nav-list li a i { font-size: 11px; }
  .header-search-container { margin-left: 20px; }
  .header-search-container.active .header-search-input {
  width: 100px; }
}

@media (max-width: 1024px) {
  header { padding: 15px 0;}
  .header-logo-img { max-width: 80%; }
  .header-nav-list { gap: 9px; padding-left: 0; margin-left: auto; }
  .header-nav-list li a { font-size: 13px; }
  .header-nav-list li a i { font-size: 10px; }
  .header-helpline-text { font-size: 14px; margin-left: -24px; }
  .header-book-btn { font-size: 10px; padding: 4px 8px; }
  .header-helpline-img { height: 33px; }
  .header-search-container { margin-left: 15px; }
  .header-hamburger { margin-left: 15px; }
  .header-search-container.active .header-search-input {
  width: 90px; }
}

/* Sidebar Nav Dropdown Overrides for Mobile */
@media (min-width: 992px) {
  .mobile-nav-item { display: none !important; }
}
@media (max-width: 991px) {
  .header-sidebar-menu { overflow-y: auto; max-width: 85vw; width: max-content; min-width: 240px; padding-right: 30px; }
  .header-nav-list { display: none !important; }
  .header-sidebar-nav-list .header-has-dropdown { position: relative; }
  .header-sidebar-nav-list .header-dropdown-menu {
    position: static;
    box-shadow: none;
    border-top: none;
    padding-left: 20px;
    background-color: transparent;
  }
.header-sidebar-nav-list li {
  margin-bottom: 10px;
}
.header-sidebar-nav-list li a {
  font-size: 16px;
}
.header-sidebar-nav-list li a i {
  font-size: 13px;
  margin-left: 5px;
}
  .header-sidebar-nav-list .header-dropdown-menu li {
    margin-bottom: 6px;
  }
  .header-sidebar-nav-list .header-dropdown-menu li:last-child {
    margin-bottom: 0px;
  }
  .header-sidebar-nav-list .header-dropdown-menu li a {
    color: #144e97 !important;
    padding: 0;
    font-size: 15px;
  }
  .header-sidebar-nav-list .header-dropdown-2col {
    column-count: 1;
    min-width: 100%;
  }
  .header-sidebar-nav-list .header-has-dropdown:hover .header-dropdown-menu {
    display: none;
  }
  .header-sidebar-nav-list .header-has-dropdown.active .header-dropdown-menu {
    display: block !important;
  }
}

@media (max-width: 991px) {
  .header-logo-img { max-width: 75%; }
  .header-top-action { gap: 6px; }
  .header-helpline-text { font-size: 14px; margin-left: -25px; }
  .header-book-btn { font-size: 13px; padding: 6px 12px; }
  .header-nav { flex-wrap: wrap; justify-content: flex-end; margin-top: 15px; }
  .header-search-container { margin-left: 0; margin-right: 15px; }
  .header-search-container.active .header-search-input {
  width: 180px; }
}

@media (max-width: 767px) {
  header { padding: 15px 0;}
  .header-logo-img { max-width: 180px; }
  .header-top-action { flex-wrap: wrap; justify-content: end; gap: 10px; margin-bottom: 0px; }
  .header-nav { margin-top: 10px; }
  .header-search-container { margin: 10px 10px 10px 0; }
  .header-hamburger { margin-left: 10px; }
  .header-search-container.active .header-search-input {
  width: 160px; }
}

@media (max-width: 700px) {
  .header-book-btn { display: none; }
}

@media (max-width: 575px) {
  header { padding: 10px 0; }
  .header-row { width: 100%;}
  .header-logo-img { max-width: 140px; }
  .header-helpline-img { height: 30px; }
  .header-helpline-text { font-size: 14px; padding: 3px 10px 3px 12px; margin-left: -24px; }
  .header-search-icon { font-size: 16px; }
  .header-hamburger { width: 24px; height: 16px; }
  .header-search-container.active .header-search-input {
  width: 150px; }
  .header-sidebar-menu { padding: 10px 15px; }
  .header-sidebar-close { font-size: 35px; margin-bottom: 30px; }
  .header-sidebar-nav-list li { margin-bottom: 6px; }
  .header-sidebar-nav-list li a { font-size: 15px; }
  .header-sidebar-nav-list li a i { font-size: 12px; margin-left: 2px; }
  .header-sidebar-nav-list .header-dropdown-menu li a { font-size: 14px; }
  .header-dropdown-menu { padding: 4px 0;}
  .header-sidebar-nav-list .header-dropdown-menu { padding-left: 10px; }
}

@media (max-width: 480px) {
  .header-logo-img { max-width: 140px; }
  .header-helpline-img { height: 28px; }
  .header-helpline-text { font-size: 13px; margin-left: -24px; }
  .header-search-icon { font-size: 15px; }
  .header-hamburger .header-hamburger-bar { height: 2px;}
  .header-hamburger { width: 22px; height: 14px; }
  .header-search-container.active .header-search-input {
  width: 130px; }
  .header-sidebar-close { font-size: 30px; margin-bottom: 15px; }
  .header-sidebar-nav-list li { margin-bottom: 8px; }
  .header-sidebar-nav-list li a { font-size: 14px; }
  .header-sidebar-nav-list .header-dropdown-menu li a { font-size: 13px; }
}

@media (max-width: 420px) {
  .header-logo-img { max-width: 130px; }
  .header-helpline-img { height: 26px; }
  .header-helpline-text { font-size: 12px; margin-left: -25px; }
  .header-search-icon { font-size: 14px; }
  .header-hamburger { width: 20px; height: 14px; }
  .header-search-container.active .header-search-input {
  width: 120px; }
  .header-sidebar-nav-list li { margin-bottom: 10px; }
  .header-sidebar-nav-list li a { font-size: 13px; }
  .header-sidebar-nav-list .header-dropdown-menu li a { font-size: 12px; }
}

@media (max-width: 380px) {
  .header-logo-img { max-width: 120px; }
  .header-helpline-img { height: 24px; }
  .header-helpline-text { font-size: 11px; margin-left: -25px; }
  .header-search-icon { font-size: 13px; }
  .header-hamburger { width: 18px; height: 12px; }
  .header-search-container.active .header-search-input {
  width: 110px; }
  .header-sidebar-close { font-size: 30px; margin-bottom: 30px; }
  .header-sidebar-nav-list li { margin-bottom: 6px; }
  .header-sidebar-nav-list li a { font-size: 13px; }
  .header-sidebar-nav-list .header-dropdown-menu li a { font-size: 12px; }
}

@media (max-width: 360px) {
  header {
    padding: 6px 0 0 0;
  }
  .header-logo-img { max-width: 110px; }
  .header-helpline-img { height: 23px; }
  .header-helpline-text { font-size: 10px; margin-left: -25px; }
  .header-search-icon { font-size: 12px; }
  .header-hamburger { width: 16px; height: 12px; }
  .header-search-container.active .header-search-input {
  width: 100px; font-size: 12px; }
  .header-sidebar-nav-list li { margin-bottom: 6px; }
  .header-sidebar-nav-list li a { font-size: 12px; }
  .header-sidebar-nav-list .header-dropdown-menu li a { font-size: 11px; }
}