/* RESET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
}

/* HERO */
/* Xóa l? tr?ng m?c d?nh c?a trình duy?t */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.hero-container {
    width: 100%;
    max-width: 1400px;
    margin: 80px auto 0;
    
    /* Ép t? l? 16:9 */
    aspect-ratio: 16 / 9; 
    
    /* Ch?ng du th?a kho?ng tr?ng bên du?i */
    display: flex;
    overflow: hidden;
    background: #1f1f1f;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.hero-wrapper {
    display: flex;
    width: 100%;
    height: 100%; /* Ð?m b?o wrapper chi?m tr?n khung 16:9 */
    padding: 40px;
    gap: 30px;
    box-sizing: border-box;
    align-items: center; /* Can gi?a n?i dung theo chi?u d?c d? không b? tr?ng dáy */
}

/* Chia c?t gi?ng y h?t bài tru?c c?a b?n */
.left {
    flex: 1.2;
}

.left h2 {
    color: #E68203;
    font-size: clamp(20px, 3vw, 32px);
}

.left span { color: #fff; }

.left p {
    color: #ddd;
    line-height: 1.6;
}

.center {
    flex: 1;
}

.center h2 {
    color: #E68203;
}

.item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 15px 0;
    border-bottom: 1px solid #444;
    padding-bottom: 8px;
}

.right {
    flex: 1.5;
    height: 100%; /* C?t ph?i cao b?ng khung 16:9 */
}

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* ?nh s? t? c?t d? l?p d?y ph?n c?t ph?i c?a khung 16:9 */
    border-radius: 8px;
    display: block;
}

/* Responsive cho màn hình nh? */
@media (max-width: 1024px) {
    .hero-container {
        aspect-ratio: auto; /* B? 16:9 trên mobile d? không b? quá d?t */
        min-height: 400px;
    }
    .hero-wrapper {
        flex-direction: column;
        padding: 20px;
    }
    .right {
        width: 100%;
        height: 300px;
    }
}
/* NAVBAR */
.navbar {
    position: fixed;
    top: 20px;
    left: 120px;
    right: 120px;

    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 8px 20px; /* ?? GI?M CHI?U CAO ? ÐÂY */

    color: white;
    z-index: 999;

    background: transparent;
    transition: all 0.3s ease;
}

/* KHI SCROLL */
.navbar.active {
    background: rgba(0, 0, 0, 0.7);

    backdrop-filter: blur(10px);

    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);

    padding: 6px 10px; /* ?? M?NG HON KHI SCROLL */
}

/* LOGO */
.logo img {
    height: 35px; /* ?? GI?M SIZE LOGO */
}

/* MENU */
.menu {
    display: flex;
    gap: 25px;
    list-style: none;
}

.menu a {
    text-decoration: none;
    color: white;
    font-size: 14px; /* ?? NH? L?I */
    transition: 0.3s;
}

.menu a:hover {
    color: #c89b6d;
}