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

body {
    font-family: 'Roboto', sans-serif;
    background-color: #000000;
    color: #FFFFFF;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header */
header {
    background: linear-gradient(90deg, #000000, #333333);
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    width: 40px;
    height: 40px;
}

header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 20px;
    color: #F5A623;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.menu-toggle {
    display: none;
    font-size: 24px;
    color: #FFFFFF;
    cursor: pointer;
}

nav {
    display: flex;
    gap: 15px;
}

nav a {
    color: #FFFFFF;
    text-decoration: none;
    font-weight: 400;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
    font-size: 16px;
}

nav a:hover {
    color: #F5A623;
}

/* Hero Section */
.hero {
    position: relative;
    background: url('assets/blockchain-bg.jpg') no-repeat center center/cover;
    padding: 80px 0;
    text-align: center;
    margin-top: 70px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.referral-message {
    background: rgba(245, 166, 35, 0.4);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 16px;
    color: #FFFFFF;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
    display: none; /* Hidden by default, shown by JS */
}

.hero h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 36px;
    margin-bottom: 15px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.highlight {
    color: #F5A623;
    text-shadow: 0 0 10px rgba(245, 166, 35, 0.8);
}

.hero p {
    font-size: 18px;
    margin-bottom: 20px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.cta-button {
    background: #F5A623;
    color: #000000;
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 700;
    transition: background 0.3s;
}

.cta-button:hover {
    background: #FFFFFF;
    color: #000000;
}

.countdown {
    margin: 20px 0;
}

.countdown h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #F5A623;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

#countdownTimer {
    font-family: 'Orbitron', sans-serif;
    font-size: 28px;
    color: #F5A623;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.hero-image {
    width: 150px;
    margin-top: 20px;
    filter: drop-shadow(0 0 10px rgba(245, 166, 35, 0.5));
}

/* Roadmap Section */
.roadmap {
    padding: 60px 0;
    background: #333333;
    text-align: center;
}

.roadmap h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 32px;
    margin-bottom: 30px;
    color: #F5A623;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.timeline {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.timeline-item {
    background: rgba(0, 0, 0, 0.7);
    padding: 15px;
    border-radius: 8px;
    width: 100%;
    max-width: 250px;
    text-align: left;
}

.timeline-item h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 20px;
    color: #F5A623;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.timeline-item p {
    font-size: 14px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

/* Download Section */
.download {
    padding: 60px 0;
    text-align: center;
    background: #000000;
}

.download h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 32px;
    margin-bottom: 15px;
    color: #F5A623;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.download p {
    font-size: 16px;
    margin-bottom: 20px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.download-buttons {
    margin: 20px 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.download-buttons .cta-button {
    margin: 5px;
}

.wallet-image {
    width: 100%;
    max-width: 250px;
    margin-top: 20px;
    border-radius: 8px;
}

/* About Section */
.about {
    padding: 60px 0;
    background: #333333;
    text-align: center;
}

.about h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 32px;
    margin-bottom: 15px;
    color: #F5A623;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.about p {
    font-size: 16px;
    margin-bottom: 20px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.about-image {
    width: 100%;
    max-width: 500px;
    margin-top: 20px;
    border-radius: 8px;
}

/* Popup */
.popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    justify-content: center;
    align-items: center;
}

.popup-content {
    background: #333333;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    max-width: 90%;
    width: 400px;
}

.popup-content h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 24px;
    color: #F5A623;
    margin-bottom: 15px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.popup-content p {
    font-size: 14px;
    margin-bottom: 15px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    color: #FFFFFF;
    cursor: pointer;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
}

.close:hover {
    color: #F5A623;
}

/* Footer */
footer {
    background: #000000;
    padding: 15px 0;
    text-align: center;
}

footer p {
    font-size: 14px;
}

.social-links {
    margin-top: 10px;
}

.social-links a {
    color: #F5A623;
    margin: 0 10px;
    text-decoration: none;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
    font-size: 14px;
}

.social-links a:hover {
    color: #FFFFFF;
}

/* Responsive Design */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    nav {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background: #333333;
        flex-direction: column;
        padding: 15px 0;
        text-align: center;
    }

    nav.active {
        display: flex;
    }

    nav a {
        margin: 10px 0;
        font-size: 18px;
    }

    .hero {
        padding: 60px 0;
        margin-top: 60px;
    }

    .hero h2 {
        font-size: 28px;
    }

    .hero p {
        font-size: 16px;
    }

    .cta-button {
        padding: 10px 20px;
        font-size: 14px;
    }

    .countdown h3 {
        font-size: 18px;
    }

    #countdownTimer {
        font-size: 24px;
    }

    .hero-image {
        width: 120px;
    }

    .roadmap h2 {
        font-size: 28px;
    }

    .timeline-item {
        max-width: 100%;
    }

    .download h2 {
        font-size: 28px;
    }

    .download p {
        font-size: 14px;
    }

    .wallet-image {
        max-width: 200px;
    }

    .about h2 {
        font-size: 28px;
    }

    .about p {
        font-size: 14px;
    }

    .about-image {
        max-width: 100%;
    }

    .popup-content {
        width: 90%;
        padding: 15px;
    }

    .popup-content h2 {
        font-size: 20px;
    }

    .popup-content p {
        font-size: 12px;
    }
}