/* =========================================
   HEADER
   ========================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-index-header);
  transition: box-shadow var(--transition-normal);
}

.header.is-sticky {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.header__logo img {
  display: block;
  height: 36px;
  width: auto;
}

/* Header Nav Desktop */
.header__nav-top {
  display: none; /* Chỉ hiện trên mobile */
}

.header__menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.header__menu-link {
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  text-decoration: none;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 4px;
  height: 80px;
  transition: color var(--transition-fast);
}

.header__menu-link:hover,
.header__menu-link.is-active {
  color: var(--color-primary);
}

.header__menu-link .icon-chevron {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.header__menu-item:hover .icon-chevron {
  transform: rotate(180deg);
}

/* Submenu */
.header__submenu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
  min-width: 200px;
  border-radius: var(--border-radius-sm);
  padding: 8px 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.header__menu-item {
  position: relative;
}

.header__menu-item:hover .header__submenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.header__submenu a {
  display: block;
  padding: 10px 24px;
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--font-size-base);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.header__submenu a:hover {
  background-color: var(--color-bg-light);
  color: var(--color-primary);
}

/* Header Actions */
.header__actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header__search-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  padding: 8px;
  transition: color var(--transition-fast);
}

.header__search-btn:hover {
  color: var(--color-cta);
}

.header__search-btn .icon {
  width: 24px;
  height: 24px;
}

.header__cta {
  padding: 10px 20px;
}

.header__toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-text);
}

/* =========================================
   FOOTER (CHUẨN GỐC)
   ========================================= */
.footer {
  background-color: var(--color-primary); /* Đảm bảo màu xanh Navy đồng nhất */
  color: var(--color-white);
  padding: 60px 0 0; /* Khoảng cách vừa phải trên cùng */
}

/* Chia lưới 6 cột */
.footer__grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1.2fr 1.2fr 1.8fr 1.5fr; 
  gap: 24px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.footer__brand {
  padding-right: 16px;
}

.footer__logo {
  height: 28px;
  margin-bottom: 12px;
}

.footer__slogan {
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.9;
}

.footer__title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--color-white);
  /* text-transform: uppercase; -> Đã xóa để hiển thị chữ thường "Sản phẩm" */
}

.footer__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__list li {
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 12px; /* Tăng gap của icon và chữ thông tin liên hệ */
}

.footer__list a,
.footer__list span {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.5;
  transition: color var(--transition-fast);
}

.footer__list a:hover {
  color: var(--color-white);
}

.footer__col--contact .icon {
  width: 16px;
  height: 16px;
  margin-top: 3px;
  opacity: 0.75;
  flex-shrink: 0;
}

/* Bỏ background tròn, dàn hàng ngang cho social icons */
.footer__socials {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer__socials a {
  display: block;
  transition: opacity var(--transition-fast);
}

.footer__socials a:hover {
  opacity: 0.7;
}

.footer__socials img {
  width: 20px;
  height: 20px;
  object-fit: contain;
  /* Nếu ảnh svg đang có màu đen, bật dòng dưới để đổi thành trắng */
  filter: brightness(0) invert(1);
}

/* ================= Footer Bottom ================= */
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}

.footer__copy {
  margin: 0;
}

.footer__legal {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 12px;
  margin: 0;
  padding: 0;
}

.footer__legal a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__legal a:hover {
  color: var(--color-white);
}

.footer__legal .separator {
  opacity: 0.5;
  font-size: 12px;
}

/* =========================================
   RESPONSIVE FOOTER (FIX LỖI CỘT MOBILE)
   ========================================= */
@media (max-width: 1199px) {
  .footer__grid {
    /* Màn hình Laptop/Tablet ngang: Chia 3 cột */
    grid-template-columns: repeat(3, 1fr); 
    gap: 40px 24px;
  }
}

@media (max-width: 991px) {
  .footer__grid {
    /* Tablet dọc: Chia 2 cột */
    grid-template-columns: repeat(2, 1fr); 
  }
}

@media (max-width: 767px) {
  .footer__grid {
    /* Mobile: Ép dứt khoát về 1 cột dọc */
    display: flex !important;
    flex-direction: column !important;
    gap: 32px;
  }
  
  /* Căn chỉnh lại khoảng cách trên mobile */
  .footer {
    padding: 40px 0 0; 
  }
  
  .footer__bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
  
  .footer__legal {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .footer__legal .separator {
    display: none; /* Ẩn dấu | trên mobile cho gọn */
  }
}

/* =========================================
   RESPONSIVE (Mobile Menu & Footer)
   ========================================= */
@media (max-width: 1199px) {
  .header__menu {
    gap: 20px;
  }
  .header__cta span {
    display: none; /* Ẩn chữ trên tablet, giữ icon */
  }
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr; /* Gộp bớt cột */
  }
}

@media (max-width: 991px) {
  .header__menu,
  .header__cta {
    display: none; /* Ẩn menu desktop */
  }
  .header__toggle {
    display: block;
  }
  
  /* Off-canvas menu */
  .header__overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 1001;
  }
  
  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    max-width: 100%;
    height: 100vh;
    background-color: var(--color-white);
    z-index: 1002;
    overflow-y: auto;
    transition: right var(--transition-normal);
    display: flex;
    flex-direction: column;
  }
  
  .header__nav.is-open {
    right: 0;
  }
  
  .header__overlay.is-active {
    opacity: 1;
    visibility: visible;
  }
  
  .header__nav-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    border-bottom: 1px solid var(--color-border);
  }
  
  .header__menu {
    display: flex;
    flex-direction: column;
    gap: 0;
  }
  
  .header__menu-link {
    height: auto;
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
    justify-content: space-between;
  }
  
  .header__submenu {
    position: static;
    transform: none;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    display: none; /* Sẽ được toggle qua JS */
    background-color: var(--color-bg-light);
  }
  
  .header__submenu.is-expanded {
    display: block;
  }
}