:root {
    --primary-color: #D50000;
    --secondary-color: #FFD600;
    --background-color: rgba(0, 0, 0, 0.7);
    --button-bg-color: #D50000;
    --button-text-color: #FFFFFF;
    --text-color: #FFFFFF;
}

body {
    background-image: url('./assets/bg-image.jpg');
    background-size: cover;
    background-position: center;
    color: var(--text-color);
}

header {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.header-logo {
    width: 150px;
    height: auto;
}

.nav-buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.nav-button {
    background-color: var(--button-bg-color);
    color: var(--button-text-color);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 12px;
    text-align: center;
}

.main-content {
    text-align: center;
    padding: 40px 20px;
}

.domain-list {
    list-style: none;
    padding: 0;
}

.domain-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--background-color);
    border-radius: 30px;
    margin: 10px 0;
    padding: 10px 20px;
}

.domain-icon {
    font-size: 24px;
}

.access-button {
    background-color: var(--button-bg-color);
    color: var(--button-text-color);
    border: none;
    border-radius: 20px;
    padding: 5px 15px;
    cursor: pointer;
    font-size: 14px;
}

/* Blinking text effect */
@keyframes blink {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0;
    }
}

.main-content h1 {
    animation: blink 1.5s infinite;
}

.nav-button.home-button {
    background-color: #D2232A; /* Light blue for Trang chủ */
}

.nav-button.android-button {
    background-color: #D2232A; /* Emerald green for Tải app Android */
}

.nav-button.iphone-button {
    background-color: #D2232A; /* Golden yellow for Tải app iPhone */
}

.nav-button.promo-button {
    background-color: #D2232A; /* Purple for Khuyến mãi */
}

.nav-button.support-button {
    background-color: #D2232A; /* Red for CSKH 24/7 */
}

/* Enhanced blinking effect for h1 text */
.main-content h1 {
    color: #FFD600; /* A bright yellow that stands out on dark gray */
    animation: blink-enhanced 1s infinite;
}

@keyframes blink-enhanced {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.1); /* Slightly increase the size for a popping effect */
    }
}

/* Adjusted domain-item styling for better contrast */
.domain-item {
    background-color: #333333; /* Lighter dark gray to stand out against a black background */
    border: 2px solid #FFD600; /* Bright yellow border to add emphasis */
    color: #FFFFFF; /* White text for readability */
}

.access-button {
    background-color: #FFD600; /* Bright yellow button background for visibility */
    color: #333333; /* Dark text on yellow button */
    border: none;
    padding: 8px 20px;
    border-radius: 25px;
    font-weight: bold;
    cursor: pointer;
}

.access-button:hover {
    background-color: #FFC107; /* Slightly darker yellow on hover for interactivity */
}

/* Center align "MN88 - UY TÍN SỐ 1" between nav buttons and domain items */
.main-content h1 {
    margin-top: 20px;
    margin-bottom: 30px; /* Add space below to balance the alignment */
    padding-top: 10px; /* Fine-tune padding for vertical centering */
}

/* Move "MN88 - UY TÍN SỐ 1" higher on the page */
.main-content h1 {
    margin-top: -20px; /* Negative margin to shift text upward */
}

/* Update font for better Vietnamese character readability */
body, .domain-item {
    font-family: 'Arial', sans-serif; /* Arial is widely readable for Vietnamese */
}