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

body {
    background: linear-gradient(135deg, #f4f4f4 0%, #e0e0e0 100%);
    color: #333;
    line-height: 1.6;
}

/* Header */
.header {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 20px 40px;
    background: linear-gradient(90deg, #ff4e50 0%, #f9d423 100%);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.logo-img {
    height: 60px;
    width: auto;
    transition: transform 0.3s ease;
}

.logo-img:hover {
    transform: scale(1.1);
}

.nav ul {
    list-style: none;
    display: flex;
    margin: 0;
}

.nav ul li {
    margin-left: 30px;
}

.nav ul li a {
    text-decoration: none;
    color: #fff;
    font-weight: bold;
    font-size: 16px;
    transition: color 0.3s ease;
}

.nav ul li a:hover {
    color: #ffeb3b;
}

/* Marquee (Dòng chữ chạy) */
.marquee {
    width: 100%;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.8);
    padding: 10px 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    white-space: nowrap;
}

.marquee span {
    display: inline-block;
    color: #ff4e50;
    font-size: 18px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    overflow: hidden;
    margin-top: 100px;
    background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
}

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.9;
    transition: opacity 0.5s ease;
}

.hero-img:hover {
    opacity: 1;
}

.hero-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    background: rgba(0, 0, 0, 0.5);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    animation: fadeIn 1s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.hero-text h1 {
    font-size: 3em;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-text p {
    font-size: 1.3em;
    margin-bottom: 25px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.btn {
    display: inline-block;
    padding: 12px 25px;
    background: linear-gradient(45deg, #ff4e50, #ff8c00);
    color: #fff;
    text-decoration: none;
    border-radius: 25px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255, 78, 80, 0.4);
    background: linear-gradient(45deg, #ff8c00, #ff4e50);
}

/* Services Section */
.services {
    padding: 60px 40px;
    text-align: center;
    background: #fff;
    border-top: 1px solid #ddd;
}

.services h2 {
    font-size: 2.5em;
    margin-bottom: 30px;
    color: #ff4e50;
    text-transform: uppercase;
}

.services-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.service-item {
    max-width: 300px;
    background: linear-gradient(135deg, #ffffff 0%, #f9f9f9 100%);
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.service-img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.service-img:hover {
    transform: scale(1.05);
}

.service-item h3 {
    font-size: 1.8em;
    margin: 15px 0;
    color: #ff6b6b;
}

.service-item p {
    font-size: 1.1em;
    color: #666;
}

/* Updates Section */
.updates {
    padding: 60px 40px;
    text-align: center;
    background: linear-gradient(135deg, #e0e0e0 0%, #ffffff 100%);
}

.updates h2 {
    font-size: 2.5em;
    margin-bottom: 30px;
    color: #4ecdc4;
    text-transform: uppercase;
}

.updates-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.update-item {
    max-width: 300px;
    background: #fff;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.update-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.update-img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.update-img:hover {
    transform: scale(1.05);
}

.update-item h3 {
    font-size: 1.8em;
    margin: 15px 0;
    color: #4ecdc4;
}

.update-item p {
    font-size: 1.1em;
    color: #666;
}

/* Footer */
.footer {
    padding: 30px;
    text-align: center;
    background: linear-gradient(90deg, #ff4e50 0%, #f9d423 100%);
    color: #fff;
    margin-top: 20px;
    border-top: 2px solid #fff;
}

.footer p {
    margin: 5px 0;
    font-size: 1em;
}