/* ================= HEADER ================= */
header{
  /* 🔧 keep it in the viewport at all times */
  position: fixed;        /* instead of sticky               */
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1100;          /* higher than .menu-overlay       */
  background: #fff;
  box-shadow: 0 2px 6px rgba(0,0,0,.06);
}
  
  .nav-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 60px;
    border-bottom: 2px solid #ccc;
  }
  
  /* ================= LOGO ================= */
  .logo img {
    height: 30px;
  }
  
  .logo {
    transition: transform 0.7s ease;
    margin-top:10px;
  }
  
  .logo:hover {
    transform: scale(1.1);
  }
  
  /* ================= HAMBURGER ================= */
  .hamburger-menu {
    position: absolute;
    top: 50%;
    left: 20px;
    transform: translateY(-50%);
    z-index: 1000;
  }
  
  .hamburger {
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 40px;
    height: 30px;
  }
  
  .hamburger span {
    display: block;
    width: 100%;
    height: 4px;
    background-color: #333;
    transition: all 0.3s ease;
    transform-origin: center;
  }
  
  .hamburger.open span:nth-child(1) {
    transform: rotate(45deg) translate(9px, 9px);
    background-color: #4f4f4f;
  }
  
  .hamburger.open span:nth-child(2) {
    opacity: 0;
  }
  
  .hamburger.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
    background-color: #4f4f4f;
  }
  
  /* ================= MENU OVERLAY ================= */
  .menu-overlay {
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    height: 30%;
    background: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-bottom: 2px solid #ccc;
    transform-origin: top;
    transform: scaleY(0);
    transition: transform 0.2s ease-in-out;
    pointer-events: none;
    z-index: 999;
  }
  
  .menu-overlay.show {
    transform: scaleY(1);
    pointer-events: auto;
  }
  
  .menu-overlay ul {
    display: flex;
    justify-content: space-evenly;
    width: 100%;
    list-style: none;
    padding: 0;
    margin: 0;
  }
  
  .menu-overlay a {
    color: #777777;
    text-decoration: none;
    font-size: 18px;
    transition: color 0.3s;
  }
  
  .menu-overlay a:hover {
    color: #004f9f;
    font-weight: 600;
  }
  
  .menu-icon {
    width: 40px;
    height: auto;
    display: block;
    margin: 0 auto 10px;
    transition: transform 0.7s ease;
  }
  
  .menu-icon:hover {
    transform: scale(1.2);
  }
  
  /* ================= LANGUAGE SELECTOR ================= */
.language-selector {
  position: fixed;
  top: 10px;
  right: 20px;
  z-index: 2000;
  display: inline-block;
}

/* Current language display box */
.language-selector .current-lang {
  cursor: pointer;
  padding: 6px 10px;
  background: #eee;
  border: 1px solid #ccc;
  border-radius: 4px;
  user-select: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 100px;
  text-align: center;
  font-weight: 600;
  color: #333;
  box-sizing: border-box;
}

/* Flag inside current language */
.language-selector .current-lang .flag-icon {
  width: auto;
  height: 20px;
}

/* Language options dropdown */
.language-options {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  background: #fff;
  border: 1px solid #ccc;
  border-radius: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  z-index: 999;
  min-width: 100%;
  box-sizing: border-box;
}

/* Show language dropdown when toggled via Vue */
.language-options.show {
  display: block;
}

/* Add divider between items */
.language-options li + li {
  border-top: 1px solid #eee;
}

/* Button inside list */
.language-options li button {
  display: block;
  width: 100%;
  text-align: center;
  padding: 10px 16px;
  background: none;
  border: none;
  cursor: pointer;
  color: #333;
  font-family: inherit;
  font-size: 16px;
  white-space: nowrap;
}

/* Hover effect for button */
.language-options li button:hover {
  background-color: #f5f5f5;
}

/* Flag + text alignment in button */
.language-options li button.lang-button {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
}

/* Flag icon in button */
.language-options li button.lang-button img.flag-icon {
  width: auto;
  height: 20px;
  display: inline-block;
}

  
  
  
  /* ================= MEDIA QUERIES ================= */

/* ====== Tablet and below (max-width: 992px) ====== */
@media (max-width: 992px) {
  /* === Logo === */
  .logo img {
    height: 20px;
  }

  /* === Hamburger Menu === */
  .hamburger {
    width: 25px;
    height: 25px;
  }

  .hamburger.open span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }

  .hamburger.open span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }

  /* === Menu Overlay === */
  .menu-overlay {
    height: 70%;
  }

  .menu-overlay ul {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    row-gap: 80px;
    column-gap: 40px;
    justify-items: center;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    list-style: none;
    padding: 0;
  }

  /* NEW: Match updated structure */
  .language-selector .current-lang .flag-icon {
    height: 18px;
  }

  .language-selector {
    right: 5px;
  }
}

/* ====== Mobile (max-width: 767.98px) ====== */
@media (max-width: 767.98px) {
  /* Match new .current-lang structure */
  .language-selector .current-lang {
    gap: 0;
    width: 65px;
    min-width: 65px;
    font-size: 0; /* Hide language letters */
  }

  .language-selector .current-lang::after {
    content: "▼";
    font-size: 1rem;
    margin-left: 0.25rem;
  }

  /* every option in the drop-down */
  .lang-button {
    font-size: 0; /* hide EN / ZH / … */
  }
}

/* Keep flag icon size consistent */
.flag-icon {
  width: 24px;
  height: 24px;
}