/* Reset và Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Orbitron', sans-serif;
    background: url('assets/homepage-bg2.png') no-repeat center center fixed;
    background-size: cover;
    color: #fff;
    line-height: 1.6;
    overflow-x: hidden;
    min-width: 1200px; /* Đảm bảo độ rộng tối thiểu cho desktop */
}

/* Container chung cho toàn bộ nội dung */
.container {
    max-width: 1440px; /* Độ rộng tối đa phổ biến cho desktop */
    margin: 0 auto;
    padding: 0 40px; /* Padding hai bên */
}

/* Background Animation */
.stars {
    display: none;
}

.twinkling {
    display: none;
}

/* Header Styles */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 1000;
    background: #000000;
    backdrop-filter: blur(10px);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 40px;
}

.logo-container {
    position: relative;
    display: flex;
    align-items: center;
    height: 100px;
    margin-left: 20px;
}

.logo-img {
    position: relative;
    height: 120px;
    width: auto;
    margin-right: 20px;
}

.logo-text {
    font-size: 36px;
    font-weight: 700;
    color: #00ffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9),
                 0 0 10px rgba(0, 255, 255, 0.5);
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    margin-left: 30px;
    font-size: 16px;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #00ffff;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 40px;
    position: relative;
}

.hero-content {
    max-width: 1200px;
    width: 100%;
    z-index: 1;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 20px;
    color: #00ffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9),
                 0 0 10px rgba(0, 255, 255, 0.5);
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    color: #ffff00;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9),
                 0 6px 12px rgba(0, 0, 0, 0.9),
                 0 0 10px rgba(255, 255, 0, 0.7),
                 0 0 20px rgba(255, 255, 0, 0.5),
                 0 0 30px rgba(255, 255, 0, 0.3);
}

.play-now-btn {
    display: inline-block;
    padding: 15px 40px;
    background: linear-gradient(45deg, #00ffff, #0066ff);
    color: #fff;
    text-decoration: none;
    border-radius: 30px;
    font-size: 20px;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.play-now-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(0, 255, 255, 0.4);
}

/* About Section */
.about {
    padding: 100px 0;
    text-align: center;
    background: rgba(0, 0, 0, 0.8);
}

.about h2 {
    font-size: 2.5rem;
    margin-bottom: 40px;
    color: #00ffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9),
                 0 0 10px rgba(0, 255, 255, 0.5);
}

.about p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9);
}

.about-content {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.about-text p {
    font-size: 18px;
    margin-bottom: 20px;
    color: #ccc;
}

.about-text ul {
    list-style: none;
}

.about-text li {
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
    color: #fff;
}

.about-text li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: #00ffff;
}

.about-image {
    flex: 1;
    height: 400px;
    background: url('path/to/your/image.jpg') center/cover;
    border-radius: 10px;
    box-shadow: 0 0 30px rgba(0, 255, 255, 0.2);
}

/* Features Section */
.features {
    padding: 100px 0;
    background: rgba(0, 0, 0, 0.8);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #00ffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9),
                 0 0 10px rgba(0, 255, 255, 0.5);
}

.features-grid {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 40px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: rgba(0, 0, 0, 0.8);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-card:first-child {
    background: url('assets/battle-bg.png') no-repeat center center;
    background-size: 100% 100%;
    position: relative;
    padding: 0;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.feature-card:nth-child(2) {
    background: url('assets/reward-bg.png') no-repeat center center;
    background-size: 100% 100%;
    position: relative;
    padding: 0;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.feature-card:nth-child(3) {
    background: url('assets/multi-bg.png') no-repeat center center;
    background-size: 100% 100%;
    position: relative;
    padding: 0;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.feature-card:first-child h3,
.feature-card:nth-child(2) h3,
.feature-card:nth-child(3) h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #00ffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9),
                 0 6px 12px rgba(0, 0, 0, 0.9),
                 0 0 10px rgba(0, 255, 255, 0.5),
                 0 0 20px rgba(0, 255, 255, 0.3);
    padding: 0 30px;
}

.feature-card:first-child p,
.feature-card:nth-child(2) p,
.feature-card:nth-child(3) p {
    color: #ffd700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9),
                 0 6px 12px rgba(0, 0, 0, 0.9),
                 0 8px 16px rgba(0, 0, 0, 0.9),
                 0 0 10px rgba(255, 215, 0, 0.5),
                 0 0 20px rgba(255, 215, 0, 0.3);
    padding: 0 30px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #00ffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9),
                 0 6px 12px rgba(0, 0, 0, 0.9),
                 0 0 10px rgba(0, 255, 255, 0.5),
                 0 0 20px rgba(0, 255, 255, 0.3);
}

.feature-card p {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9),
                 0 6px 12px rgba(0, 0, 0, 0.9),
                 0 8px 16px rgba(0, 0, 0, 0.9);
}

.feature-card:hover {
    transform: translateY(-10px);
}

/* Roadmap Section */
.roadmap {
    padding: 100px 0;
    text-align: center;
    background: rgba(0, 0, 0, 0.8);
}

.roadmap h2 {
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #00ffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9),
                 0 0 10px rgba(0, 255, 255, 0.5);
}

.roadmap-timeline {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.timeline-item {
    display: flex;
    width: 100%;
    justify-content: flex-start;
    margin-bottom: 40px;
    position: relative;
}

.timeline-item.right {
    justify-content: flex-end;
}

.timeline-content {
    width: 45%;
    background: rgba(0,0,0,0.6);
    padding: 24px;
    border-radius: 16px;
    color: #fff;
    z-index: 2;
}

.roadmap-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #00ffff 0%, rgba(0, 255, 255, 0) 100%);
    z-index: 1;
}

.timeline-dot {
    width: 20px;
    height: 20px;
    background: #00ffff;
    border-radius: 50%;
    margin: 0 30px;
}

.timeline-content h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: #fff;
}

.timeline-content p {
    color: #ccc;
}

.roadmap-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #00ffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9),
                 0 0 8px rgba(0, 255, 255, 0.5);
}

.roadmap-item p {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9);
}

/* Footer */
footer {
    background: rgba(0, 0, 0, 0.9);
    padding: 40px 0;
    text-align: center;
}

footer p {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.9),
                 0 4px 8px rgba(0, 0, 0, 0.9);
}

.footer-content {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.footer-logo {
    font-size: 24px;
    font-weight: 700;
    color: #00ffff;
}

.social-links {
    display: flex;
    gap: 20px;
}

.social-link {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.social-link:hover {
    color: #00ffff;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: #666;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 48px;
    }
    
    .hero p {
        font-size: 20px;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .about-image {
        width: 100%;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 36px;
    }
    
    .nav-links {
        display: none;
    }
    
    .play-now-btn {
        padding: 12px 30px;
        font-size: 16px;
    }
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
}