/* ================= TOP BAR ================= */
.top-bar {
    background: linear-gradient(90deg, #c62828, #8e0000);
    color: #fff;
    padding: 8px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    font-family: Arial, sans-serif;
}

.top-bar .top-left span {
    margin-right: 20px;
    display: inline-flex;
    align-items: center;
    font-weight: 500;
}

.top-bar .top-left i {
    margin-right: 5px;
    color: #ffe082;
    font-size: 14px;
}

.top-bar .top-right a {
    color: #fff;
    margin-left: 15px;
    font-size: 14px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.top-bar .top-right a:hover {
    color: #ffe082;
    transform: scale(1.1);
}

/* ================= MAIN HEADER ================= */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease-in-out;
}

.main-header.scrolled {
    background: #fafafa;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.main-header .logo img {
    height: 80px;
    transition: height 0.3s;
}

.main-header.scrolled .logo img {
    height: 65px;
}

/* ================= MENU ================= */
.main-nav ul.menu {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.main-nav ul.menu li {
    position: relative;
}

.main-nav ul.menu li a {
    display: block;
    padding: 12px 20px;
    color: #333;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
}

/* Hiệu ứng gạch chân */
.main-nav ul.menu li a::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 6px;
    width: 0;
    height: 2px;
    background: #c62828;
    transition: width 0.3s ease, left 0.3s ease;
    transform: translateX(-50%);
}

.main-nav ul.menu li a:hover {
    color: #c62828;
}

.main-nav ul.menu li a:hover::after {
    width: 60%;
}

.main-nav ul.menu li a:active {
    color: #8e0000;
    transform: scale(0.95);
}

/* ================= DROPDOWN ================= */
.main-nav ul.menu li.dropdown:hover ul.submenu {
    display: block;
}

.main-nav ul.submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    min-width: 200px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.12);
    margin: 0;
    padding: 0;
    border-radius: 5px;
    overflow: hidden;
    z-index: 999;
}

.main-nav ul.submenu li {
    border-bottom: 1px solid #f0f0f0;
}

.main-nav ul.submenu li:last-child {
    border-bottom: none;
}

.main-nav ul.submenu li a {
    padding: 12px 15px;
    color: #333;
    font-weight: 500;
}

.main-nav ul.submenu li a:hover {
    background: #f9f9f9;
    color: #c62828;
}

/* ================= ICONS ================= */
.header-icons a {
    color: #333;
    margin-left: 20px;
    font-size: 18px;
    position: relative;
    text-decoration: none;
    transition: transform 0.3s ease, color 0.3s ease;
}

.header-icons a:hover {
    color: #c62828;
    transform: scale(1.2);
}

.header-icons .cart-count {
    position: absolute;
    top: -8px;
    right: -12px;
    background: #c62828;
    color: #fff;
    font-size: 12px;
    padding: 2px 5px;
    border-radius: 50%;
}

/* ================= HAMBURGER (Mobile) ================= */
.menu-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: #333;
}

/* ================= Responsive ================= */
@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #fff;
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        flex-direction: column;
    }

    .main-nav.show {
        display: flex;
    }

    .main-nav ul.menu {
        flex-direction: column;
    }

    .main-nav ul.menu li a {
        padding: 14px;
        border-bottom: 1px solid #eee;
    }

    .menu-toggle {
        display: block;
    }
}