:root {
    --primary-color: #111;
    --secondary-color: #f7f7f7;
    --accent-color: #b9885c;
    --text-dark: #222;
    --text-light: #fff;
    --shadow-light: 0 6px 20px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 35px rgba(0, 0, 0, 0.25);
}

* {margin:0; padding:0; box-sizing:border-box;}
body {font-family:'Poppins', sans-serif; background:var(--secondary-color); color:var(--text-dark); line-height:1.7; scroll-behavior:smooth;}
h1,h2,h3 {font-family:'Cormorant Garamond', serif; font-weight:700; color: var(--primary-color);}
a{text-decoration:none;}

/* Header */
.header {text-align:center; padding:60px 20px 40px; background:var(--primary-color); color:var(--text-light); border-bottom:5px solid var(--accent-color);}
.header h1 {font-size:4rem; letter-spacing:5px; margin-bottom:5px; color:var(--accent-color); text-transform:uppercase; animation:fadeInDown 1s ease, floatX 4s ease-in-out infinite alternate;}
.header p {font-size:1.4rem; color:#ccc; font-weight:400; animation:fadeInUp 1s ease;}

/* Navbar */
/* Navbar */
.navbar {
    background:#2c2c2c;
    position:sticky;
    top:0;
    z-index:1000;
    transition: background 0.4s ease;
}
.navbar.scrolled {
    background: rgba(44,44,44,0.95);
    box-shadow:0 2px 10px rgba(0,0,0,0.5);
}

.navbar ul {
    display:flex;
    justify-content:center;  /* Căn giữa menu */
    align-items:center;
    list-style:none;
    padding:0;
    margin:0;
    gap:30px; /* Khoảng cách giữa các menu item */
}

.navbar li {
    position:relative;
}

.navbar li a {
    display:block;
    padding:15px 20px;
    color:var(--text-light);
    font-weight:600;
    text-transform:uppercase;
    font-size:0.95rem;
    transition:.3s;
    position:relative;
}

.navbar li a::after {
    content:'';
    position:absolute;
    width:0;
    height:2px;
    background:var(--accent-color);
    bottom:8px;
    left:50%;
    transform:translateX(-50%);
    transition: width 0.3s ease;
}

.navbar li a:hover::after,
.navbar li a.active::after {
    width:70%;
}

.navbar li a:hover, .navbar li a.active {
    color:var(--accent-color);
    transform:translateY(-1px);
}

/* Submenu */
.submenu-content {
    display:none;
    position:absolute;
    top:100%;
    left:50%;              /* submenu ra giữa menu cha */
    transform:translateX(-50%);
    background:var(--primary-color);
    border-radius:0 0 8px 8px;
    min-width:200px;
    box-shadow:var(--shadow-hover);
    z-index:1001;
    transition:opacity .4s ease, transform .4s ease;
    opacity:0;
    border-top:3px solid var(--accent-color);
}

.submenu-content a {
    color:#eee;
    display:block;
    padding:10px 15px;
    transition:.3s;
}

.submenu-content a:hover {
    background:var(--accent-color);
    color:var(--primary-color);
    padding-left:25px;
}

.submenu:hover .submenu-content {
    display:block;
    opacity:1;
    transform:translateX(-50%) translateY(0);
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between; /* menu chính giữa, search+cart bên phải */
    align-items: center;
    flex-wrap: nowrap; /* không cho wrap xuống hàng */
    padding: 0 20px;
    background: #2c2c2c;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background 0.4s ease;
}

/* Menu chính */
:root {
    --primary-color: #111;
    --secondary-color: #f7f7f7;
    --accent-color: #b9885c;
    --text-light: #fff;
    --shadow-light: 0 6px 20px rgba(0,0,0,0.1);
    --shadow-hover: 0 15px 35px rgba(0,0,0,0.25);
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap; /* không xuống hàng */
    padding: 0 20px;
    background: #2c2c2c;
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* Logo (bên trái) */
.nav-left .logo {
    color: var(--text-light);
    font-size: 1.5rem;
    font-weight: bold;
    text-transform: uppercase;
}

/* Menu chính */
.navbar {
    display: flex;
    justify-content: center; /* Căn tổng thể navbar giữa */
    align-items: center;
    padding: 10px 20px;
    background: #2c2c2c;
    position: relative;
    position:sticky;
    top:0;
    z-index:1000;
}

/* Menu chính nằm giữa */
.nav-ul {
    display: flex;
    gap: 50px;          /* Khoảng cách giữa các menu item */
    list-style: none;
    margin: 0 auto;
    padding: 0;
    justify-content: center;
    position: absolute;
    left: 50%;
    transform: translateX(-50%); /* Đặt menu chính giữa thanh navbar */
}

.nav-ul li a {
    color: var(--text-light);
    text-transform: uppercase;
    font-weight: 600;
    padding: 15px 10px;
    display: block;
    position: relative;
    text-align: center;
    transition: 0.3s;
}

.nav-ul li a:hover,
.nav-ul li a.active {
    color: var(--accent-color);
}

/* Submenu */
.submenu-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    border-radius: 0 0 8px 8px;
    min-width: 200px;
    box-shadow: var(--shadow-hover);
    opacity: 0;
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.submenu-content a {
    display: block;
    color: #eee;
    padding: 10px 15px; /* giữ cố định padding */
    transition: background 0.3s, color 0.3s; /* chỉ animate màu */
}

.submenu-content a:hover {
    background: rgba(185, 136, 92, 0.85); /* màu cam/nâu đất mờ */
    color: #111; /* chữ nổi bật */
    padding-left: 10px; /* không thay đổi nhiều, chữ không bị dịch */
}


.submenu:hover .submenu-content {
    display: block;
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    flex-basis: 200px;
}

/* Search + Cart nằm bên phải */
.nav-right {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-left: auto; /* đẩy sang phải */
    
}

/* Search box */
.nav-search {
    display: flex;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid #555;
    background: #222;
    flex-basis: 200px; /* Đặt độ rộng cố định cho phần tử phải */
    justify-content: flex-end;
}

.nav-search input {
    padding: 6px 12px;
    border: none;
    outline: none;
    background: #222;
    color: #fff;
}

.nav-search button {
    background: var(--accent-color);
    border: none;
    padding: 6px 10px;
    color: #111;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

.nav-search button:hover {
    background: #fff;
    color: var(--primary-color);
}

/* Cart */
.nav-cart a {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--text-light);
    padding: 8px;
    transition: 0.3s;
}

.nav-cart a:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}


/* Cart */
.nav-cart a {
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:1.2rem;
    color:var(--text-light);
    padding:8px;
    transition:.3s;
}

.nav-cart a:hover {
    color:var(--accent-color);
    transform:translateY(-2px);
}


/* Banner */
.banner {position:relative; background:url('https://images.unsplash.com/photo-1509042239860-f550ce710b93?fit=crop&q=80&w=2070') center center/cover fixed no-repeat; height:70vh; display:flex; justify-content:center; align-items:center; perspective:1px;}
.banner::after {content:""; position:absolute; inset:0; background:rgba(0,0,0,.65);}
.banner-text {position:relative; z-index:1; color:var(--text-light); text-align:center; max-width:800px; padding:50px 60px; border-radius:12px; backdrop-filter:blur(3px); border:1px solid rgba(255,255,255,0.4); animation:fadeIn 1.5s ease;}
.banner-text h2 {font-size:3.5rem; margin-bottom:15px; color:var(--accent-color); text-shadow:0 4px 8px rgba(0,0,0,0.6); animation:floatText 2.5s ease-in-out infinite alternate;}
.banner-text p {font-size:1.1rem; margin-bottom:25px; color:#ddd;}
.banner-text .btn {background:var(--accent-color); color:var(--primary-color); font-weight:800; letter-spacing:1.5px; padding:12px 28px; border-radius:6px; transition:.3s;}
.banner-text .btn:hover {background:#fff; box-shadow:0 12px 30px rgba(0,0,0,0.5); transform:translateY(-6px) scale(1.05);
position:relative; 
    background:url('...') center center/cover fixed no-repeat;}

/* Products */
.products {background:var(--secondary-color); padding:80px 20px 100px; gap:40px; display:flex; flex-wrap:wrap; justify-content:center;}
.product {width:320px; background:var(--text-light); border-radius:16px; box-shadow:var(--shadow-light); transition:all 0.8s cubic-bezier(0.23,1,0.32,1); opacity:0; transform:translateY(60px); border:1px solid #e0e0e0;}
.product.show {opacity:1; transform:translateY(0);}
.product:hover {box-shadow:var(--shadow-hover); transform:translateY(-10px) scale(1.03);}
.product img {height:260px; border-radius:16px 16px 0 0; transition: transform 0.4s;}
.product:hover img {transform:scale(1.08);}
.product-info {padding:15px; text-align:center;}
.product-info h3 {font-weight:600; font-size:1.3rem;}
.product-info p {font-size:0.95rem; color:#555; margin:10px 0;}
.product-info button {background:var(--primary-color); color:#fff; padding:8px 16px; border-radius:4px; transition:.3s; cursor:pointer;}
.product-info button:hover {background:var(--accent-color); color:var(--primary-color); transform:translateY(-2px);}

/* About */
.about {background:var(--text-light); text-align:center; padding:100px 20px; opacity:0; transform:scale(0.9); transition:all 1s cubic-bezier(0.23,1,0.32,1);}
.about.show {opacity:1; transform:scale(1);}
.about h2 {font-size:3rem; margin-bottom:20px; color:var(--accent-color); position:relative; display:inline-block;}
.about h2::after {content:''; position:absolute; left:50%; transform:translateX(-50%); bottom:-10px; width:80px; height:4px; background:var(--accent-color); border-radius:2px;}
.about p {max-width:900px; font-size:1.15rem; line-height:1.9; font-style:italic; margin:auto;}

/* Footer */
.footer {background:#1a1a1a; color:#ccc; padding-top:60px;}
.footer-container {max-width:1200px; margin:auto; display:grid; grid-template-columns:1.5fr 1fr 1fr; gap:40px; padding:0 40px 40px;}
.footer-column h3 {color:#fff; margin-bottom:25px; font-size:19px; text-transform:uppercase; position:relative;}
.footer-column h3::after {content:''; display:block; width:40px; height:2px; background:var(--accent-color); margin-top:8px; border-radius:5px;}
.footer-column ul {list-style:none; padding:0;}
.footer-column li {margin-bottom:12px;}
.footer-column a {color:#ccc; transition:.3s;}
.footer-column a:hover {color:var(--accent-color);}
.footer-logo-wrapper {display:flex; align-items:center; margin-bottom:20px;}
.footer-logo {width:55px; height:55px; margin-right:15px; border-radius:50%; object-fit:cover; background:#f7f7f7; padding:3px;}
.brand-name {font-size:24px; color:#fff; font-weight:bold; letter-spacing:.5px;}
.brand-description {font-size:.95rem; line-height:1.7; margin-bottom:25px; color:#b0b0b0;}
.social-links {display:flex; gap:15px;}
.social-links a {width:38px; height:38px; border-radius:50%; display:flex; align-items:center; justify-content:center; background:rgba(255,255,255,.1); transition:.3s;}
.social-links a:hover {background:rgba(200,169,126,.2); transform:translateY(-3px);}
.footer-bottom {text-align:center; background:#111; color:#aaa; padding:22px 0; font-size:14px; border-top:1px solid #333;}
.social-links a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    transition: background 0.3s, transform 0.3s;
}

.social-links a:hover {
    background: var(--accent-color);
    transform: translateY(-3px); /* chỉ dịch lên nhẹ, không scale */
}

.social-links a img {
    width: 20px;   /* đặt kích thước cố định cho icon */
    height: 20px;
    object-fit: contain;
    transition: none; /* bỏ transform trên icon */
}

/* Animations */
@keyframes fadeIn {0%{opacity:0;}100%{opacity:1;}}
@keyframes fadeInDown {0%{opacity:0; transform:translateY(-30px);}100%{opacity:1; transform:translateY(0);} }
@keyframes fadeInUp {0%{opacity:0; transform:translateY(30px);}100%{opacity:1; transform:translateY(0);} }
@keyframes floatText {0%{transform:translateY(0);}100%{transform:translateY(-10px);} }
@keyframes floatX {0%{transform:translateX(0);}100%{transform:translateX(5px);} }