* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
}

/* TOP BAR */
.topbar {
  background: black;
  color: white;
  text-align: center;
  padding: 20px;
  font-weight: bold;
  font-size: 40px;
}

/* NAV */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 40px;
  border-bottom: 1px solid #ddd;
}
.navbar {
  position: relative;
}

.menu {
  display: flex;
  gap: 40px;
  list-style: none;
  font-size: 15px;
}
.menu li {
  position: relative;
}
.menu li a{
  text-decoration: none;
  color: black;
  font-size: 20px;
  transition: 0.3s;
  padding: 5px 0;
}
.menu li a:hover{
  color: #0f6e38;
}
/* SEARCH */
.search-box {
  position: right;
  margin-right: 10px;
}

.search-box input {
  padding: 10px 1px 10px 15px;
  border: 4px solid #cccccca0;
}

/* BANNER */
.banner {
  position: relative;
}

.banner img {
  width: 100%;
  height: 450px;
  object-fit: cover;
}

.banner h1 {
  position: absolute;
  bottom: 40px;
  left: 50px;
  color: white;
  font-size: 36px;
  font-weight: bold;
}

/* SECTION */
.section {
  background-color: white;
  padding: 40px;
}

.section h2 {
  margin-bottom: 20px;
  font-size: 22px;
}

/* GRID */
.grid-3 {
  display: flex;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}
/* CARD */
.card img {
  width: 100%;
  background: #dbd8e1;
}
.card img:hover{
  border: 2px solid black;
  transform: translateY(-10px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}
.card p {
  text-align: center;
  margin-top: 10px;
}

/* PRODUCT */
.product{
    background: #fff;
    padding: 0;
    transition: 0.3s;
}

/* KHUNG ẢNH */
.product a{
    display: flex;
    justify-content: center;
    align-items: center;

    width: 100%;
    height: 450px;

    background: #f3f3f3;

    overflow: hidden;
}

/* ẢNH */
.product img{
    width: 78%;
    object-fit: contain;

    transition: 0.3s;
}

/* HOVER */
.product img:hover{
    transform: translateY(-10px) scale(1.03);

    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}
.product h3 {
  margin-top: 10px;
}

.product p {
  color: rgb(0, 0, 0);
}

/* BACKGROUND PURPLE */
.bg-purple {
  background: #f2ecff;
}
.bg-white {
  background: white;
}

/* PROMO */
.promo {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.promo img {
  width: 100%;
  height: 500px;
  object-fit: cover;
}

/* FOOTER */
footer {
  background: black;
  color: white;
  padding: 40px;
  text-align: left;
}
/* Thiết lập chung cho nền đen chữ trắng */
.adidas-container {
  background-color: #000;
  color: #fff;
  padding: 40px;
  max-width: 1920px;
  line-height: 1.6;
}

/* Kiểu dáng cho Tiêu đề */
.adidas-title {
  font-family: 'Inter', sans-serif;
  font-size: 36px;
  text-transform: uppercase;
  text-align: center;      
  margin-bottom: 30px;
}


.adidas-text {
  font-family: 'Inter', sans-serif;
  font-size: 20px;        
  text-align: left;        
  margin-bottom: 20px;
  color: #eee;             
  max-width: 100%;
}
/* TOP BAR */
.promo-bar {
  background-color: #4cbc8a; 
  padding: 20px 0;
  width: 100%;
  display: flex;
  justify-content: center;
}

.promo-container {
  display: flex;
  align-items: center;    
  gap: 40px;              
}

.promo-text {
  color: #ffffff;
  font-family: 'Inter', sans-serif;
  font-weight: 800;       
  font-size: 22px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.promo-button {
  background-color: #ffffff;
  color: #0f6e38;
  text-decoration: none;
  padding: 12px 25px;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: background-color 0.3s;
}

.promo-button:hover {
  background-color: #eeeeee; 
  color: #000;
}
.footer-grid{
    display: flex;
    justify-content: space-around;
    margin-top: 20px;

    background: black;
    color: white;

    padding: 50px 30px;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 15px;
}


/* ICON BÊN NGOÀI */
.icon-img {
  width: 25px;
  height: 30px;
  opacity: 1;
  cursor: pointer;
  gap: 40px;
  transition: 0.2s;
  margin-left: 30px;
}
.icon-img:hover {
  transform: translateY(-5px);
}
.count{
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-top: 10px;
}

.wishlist{
    color: black;
    font-size: 22px;
    transition: 0.3s;
}

.wishlist:hover{
    color: red;
    transform: scale(1.2);
}
.product-img{
    width: 100%;
    cursor: pointer;
}
/* =========================
   HAMBURGER ICON
========================= */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.hamburger span {
  width: 28px;
  height: 3px;
  background: black;
  transition: 0.3s;
}

/* =========================
   TABLET + MOBILE MENU
========================= */
@media (max-width: 992px) {

  .navbar {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  /* hiện hamburger */
  .hamburger {
    display: flex;
  }

  /* ẩn menu mặc định */
  .menu {
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: white;

    flex-direction: column;
    gap: 15px;
    padding: 20px;

    display: none;
    z-index: 999;
    border-top: 1px solid #ddd;
  }

  /* khi bật menu */
  .menu.active {
    display: flex;
  }

  /* ẩn icon bên phải nếu muốn gọn */
  .nav-right {
    display: none;
  }
}

/* =========================
   ANIMATION HAMBURGER -> X
========================= */
.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

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