body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #fff8e1;
    line-height: 1.6;
}

header {
    background-color: #bf360c;
    color: white;
    text-align: center;
    padding: 25px;
}

h1 {
    margin: 0;
}

section {
    padding: 30px;
}

h2 {
    color: #bf360c;
    border-bottom: 2px solid #bf360c;
    padding-bottom: 5px;
}

.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.card {
    background-color: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-6px);
}

.card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 8px;
}

.card h3 {
    color: #e65100;
}

footer {
    background-color: #bf360c;
    color: white;
    text-align: center;
    padding: 15px;
    margin-top: 30px;
}

footer a {
    color: #ffcc80;
    font-weight: bold;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Nút lên đầu trang */
.top-btn {
    position: fixed;
    bottom: 25px;
    right: 25px;
    background: #bf360c;
    color: white;
    padding: 12px 15px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    transition: 0.3s;
}

.top-btn:hover {
    background: #e65100;
    transform: translateY(-5px);
}
/* ===== THANH MENU ===== */
.navbar {
    background-color: #d50000;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 35px;
    padding: 18px 10px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: 0.3s;
}

.navbar a:hover {
    color: #ffcc80;
    transform: scale(1.05);
}