body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(to right, #f8fafc, #e2e8f0);
}

.container {
    background: #fff;
    padding: 30px;
    margin: 20px auto;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 400px;
}

.profile-section {
    position: relative;
    background-image: url('background.jpg'); /* Thay 'background.jpg' bằng đường dẫn của ảnh nền */
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    padding: 50px;
    border-radius: 12px;
    margin-bottom: 20px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    color: rgb(0, 0, 0);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.profile-section h2 {
    margin: 5px 0;
    font-size: 20px;
}

.profile-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 12px;
    z-index: -1;
}

h1 {
    font-size: 24px;
    color: #111827;
}

p {
    font-size: 16px;
    color: #4b5563;
    margin: 15px 0;
}

.preview-img {
    width: 100%;
    border-radius: 10px;
    margin: 20px 0;
}

.cta-button {
    display: inline-block;
    padding: 12px 20px;
    background: #3b82f6;
    color: white;
    text-decoration: none;
    font-weight: bold;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.cta-button:hover {
    background: #2563eb;
}

/* Định dạng chung cho phần video */
.preview-video {
    width: 100%;
    border-radius: 10px;
    margin: 10px 0;
    position: relative;
    display: block;
}

/* Bao bọc video để có thể chứa nút bấm */
.video-container {
    position: relative;
    display: inline-block;
}

/* Nút bấm tròn */
.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background-color: #fff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 30px;
    color: #3b82f6;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s ease;
}

/* Hiệu ứng hover cho nút bấm */
.play-button:hover {
    background-color: #f0f0f0;
}

/* Xóa viền khi nút bấm được focus */
.play-button:focus {
    outline: none;
}


@keyframes shimmer {
    0% {
        background-position: -500px 0;
    }
    100% {
        background-position: 500px 0;
    }
}

.glow-text {
    font-size: 32px;
    font-weight: 900;
    background: linear-gradient(120deg, #3b82f6, #9333ea, #f59e0b, #3b82f6);
    background-size: 400% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 3s linear infinite;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

.stats {
    margin: 15px 0;
    font-size: 14px;
    color: #4b5563;
}

.stats span {
    display: block;
    margin: 5px 0;
}

.profile-logo {
    margin: 5px 0;
    text-align: center;
}

.logo-img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #3b82f6;
}

/* HIỆU ỨNG H2 CẦU VỒNG GÕ CHỮ */
.typing-rainbow {
    font-size: 24px;
    font-weight: bold;
    white-space: nowrap;
    overflow: hidden;
    width: 130px;
    margin: 0 auto;
    text-align: center;

    border-right: 2px solid rgba(255, 255, 255, 0.75);
    background: linear-gradient(90deg, #ff0080, #ff8c00, #40e0d0, #ff0080);
    background-size: 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;

    animation: typing 2s steps(10) infinite, /* Lặp lại gõ chữ */
               blink 0.7s step-end infinite,
               rainbowShift 5s linear infinite;
}

/* Animation gõ chữ */
@keyframes typing {
    from { width: 0 }
    to { width: 130px }
}

/* Con trỏ nhấp nháy */
@keyframes blink {
    50% { border-color: transparent }
}

/* Hiệu ứng cầu vồng mượt */
@keyframes rainbowShift {
    0% { background-position: 0% }
    100% { background-position: 100% }
}