* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", Arial, sans-serif;
}

/* ===== HEADER ===== */
.header {
    background: linear-gradient(90deg, #ff9800, #ff5722);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 60px;
}

.logo {
    font-size: 26px;
    font-weight: 700;
}

.menu a {
    color: white;
    text-decoration: none;
    margin-left: 28px;
    font-size: 16px;
    font-weight: 500;
}

.menu a:hover {
    text-decoration: underline;
}

/* ===== BANNER ===== */
.banner {
    background: linear-gradient(135deg, #fff3e0, #ffe0b2);
    color: #333;
    text-align: center;
    padding: 90px 20px;
}

.banner h1 {
    font-size: 42px;
    margin-bottom: 12px;
    color: #e65100;
}

.banner p {
    font-size: 18px;
    color: #444;
}

/* ===== PRODUCTS ===== */
.products {
    background-color: #fffaf5;
    padding: 60px 40px;
}

.products h2 {
    text-align: center;
    margin-bottom: 45px;
    font-size: 30px;
    color: #ff6f00;
}

/* ===== PRODUCT LIST ===== */
.product-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 28px;
    max-width: 1200px;
    margin: auto;
}

/* ===== PRODUCT CARD ===== */
.product-card {
    background: white;
    border-radius: 14px;
    padding: 18px;
    text-align: center;
    border: 1px solid #f1f1f1;
    transition: 0.35s;
}

.product-card:hover {
    box-shadow: 0 14px 35px rgba(255, 152, 0, 0.25);
    transform: translateY(-6px);
}

.product-card img {
    width: 100%;
    height: 220px;
    object-fit: contain;
    margin-bottom: 16px;
}

/* ===== PRODUCT NAME ===== */
.product-name {
    font-size: 16px;
    font-weight: 600;
    color: #212121;
    margin-bottom: 6px;
}

/* ===== INSTALLMENT ===== */
.installment {
    font-size: 14px;
    color: #388e3c;
    margin-bottom: 10px;
}

/* ===== PRICE ===== */
.price {
    font-size: 20px;
    color: #d32f2f;
    font-weight: 700;
    margin-bottom: 16px;
}

/* ===== BUTTON ===== */
.product-card button {
    width: 100%;
    background: linear-gradient(90deg, #ff9800, #ff5722);
    color: white;
    border: none;
    padding: 13px;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
}

.product-card button:hover {
    opacity: 0.9;
    transform: scale(1.03);
}

/* ===== FOOTER ===== */
.footer {
    background-color: #fff3e0;
    padding: 40px 20px 20px;
    color: #444;
}

.footer-container {
    max-width: 1200px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.footer-box h4 {
    font-size: 17px;
    margin-bottom: 12px;
    color: #ff6f00;
}

.footer-box p {
    font-size: 14px;
    margin-bottom: 8px;
}

.footer-box a {
    text-decoration: none;
    color: #444;
}

.footer-box a:hover {
    color: #ff5722;
}

/* ICON MẠNG XÃ HỘI */
.social i {
    font-size: 20px;
    margin-right: 12px;
    color: #ff9800;
    cursor: pointer;
    transition: 0.3s;
}

.social i:hover {
    color: #ff5722;
    transform: scale(1.2);
}

/* DÒNG CUỐI */
.footer-bottom {
    border-top: 1px solid #ffd180;
    margin-top: 30px;
    padding-top: 15px;
    text-align: center;
    font-size: 13px;
}