/* ==================================================
       HEADER – STICKY
       ================================================== */
header {
  position: sticky;
  top: 0;
  z-index: 9999;
  background: white;
  border-bottom: 1px solid #eee;
}

.header-inner {
  position: relative;
  max-width: var(--max-width);
  margin: auto;
  padding: 15px 20px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
}

.logo {
  justify-self: center;
  font-family: var(--title-font);
  font-size: 1.8rem;
  letter-spacing: 1px;
}


.menu-btn {
  width: 34px;
  height: 19px;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  margin-left: -10px
}

.menu-btn span {
  height: 1px;
  width: 100%;
  background: #1c1c1c;
  border-radius: 1px;
}

@media (max-width: 768px) {
  .nav {
    display: none; /* hide nav, show dropdown later */
  }
}

    /* Mobile header */
    @media (max-width: 768px) {
      .header-inner {
        flex-direction: column;
      }

      .nav {
        width: 100%;
        justify-content: space-around;
        padding-top: 10px;
      }
    }


.simple-dropdown {
  position: absolute;
  top: 70px;
  left: 0; /* align with container, not viewport */
  width: 300px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 18px 40px rgba(0,0,0,0.12);
  padding: 6px 0;
  display: none;
  z-index: 9999;
}

.simple-dropdown.show {
  display: block;
}

/* Menu items */
.simple-dropdown a {
  display: flex;
  justify-content: space-between;
  align-items: center;

  padding: 14px 20px;
  font-family: var(--main-font);
  font-size: 0.95rem;
  color: #111;

  border-bottom: 1px solid #eee;
}

.simple-dropdown a:last-child {
  border-bottom: none;
}

/* Chevron */
.simple-dropdown i {
  font-style: normal;
  font-size: 0.9rem;
  color: #777;
}

/* Hover */
.simple-dropdown a:hover {
  background: #fafafa;
}

/* bọc item */
.dropdown-item {
  position: relative;
}

/* sub menu */
.sub-menu {
  display: none;
  background: #fafafa;
}

.sub-menu a {
  padding: 12px 30px;
  font-size: 0.9rem;
  color: #444;
  border-bottom: 1px solid #eee;
}

/* mở submenu */
.dropdown-item.open .sub-menu {
  display: block;
}

/* xoay mũi tên */
.dropdown-item.open > a i {
  transform: rotate(180deg);
}

.simple-dropdown i {
  transition: transform 0.25s ease;
  cursor: pointer;
}

/* ===============================
   HEADER SEARCH
   =============================== */
.header-search {
  justify-self: end;
  display: flex;
  align-items: center;
  position: relative;
}

.search-toggle {
  background: none;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  padding: 6px;
}

.search-input {
  width: 0;
  opacity: 0;
  margin-left: 1px;
  padding: 6px 10px;
  font-size: 0.85rem;
  border: 1px solid #ddd;
  border-radius: 20px;
  outline: none;
  transition: all 0.25s ease;
  font-family: var(--main-font);
}

.header-search.active .search-input {
  width: 180px;
  opacity: 1;
}
.search-icon {
  width: 18px;
  height: 18px;
  stroke: #1c1c1c;
  stroke-width: 1.7;
  fill: none;
  transition: stroke 0.25s ease, transform 0.25s ease;
}

/* hover tinh tế */
.search-toggle:hover .search-icon {
  stroke: var(--accent-color);
  transform: scale(1.05);
}


/* Mobile */
@media (max-width: 768px) {
  .header-search.active .search-input {
    width: 140px;
  }
}

.search-suggest {
  position: absolute;
  top: 38px;
  right: 0;
  width: 280px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 18px 40px rgba(0,0,0,0.15);
  overflow: hidden;
  display: none;
  z-index: 9999;
}

.search-suggest.show {
  display: block;
}

.search-suggest a {
  display: block;
  padding: 12px 16px;
  font-family: var(--main-font);
  font-size: 0.9rem;
  color: #111;
  border-bottom: 1px solid #eee;
}

.search-suggest a:last-child {
  border-bottom: none;
}

.search-suggest a:hover {
  background: #fafafa;
}

/* keyword highlight */
.search-suggest mark {
  background: none;
  color: var(--accent-color);
  font-weight: 500;
}