:root {
    --bg-dark: #070b14;
    --bg-card: #0f1626;
    --text-main: #e2e8f0;
    --text-muted: #8b9bb4;
    --accent-cyan: #00f0ff;
    --accent-blue: #0051ff;
    --grid-color: rgba(0, 240, 255, 0.05);
}

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

body {
    font-family: 'Courier New', Courier, monospace; /* Tech feel */
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-dark);
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 30px 30px;
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background: rgba(7, 11, 20, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 240, 255, 0.2);
    box-shadow: 0 4px 30px rgba(0, 240, 255, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-container img {
    height: 55px;
    width: auto;
    filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.5));
}

.logo-text {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 35px;
}

nav a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s, text-shadow 0.3s;
}

nav a:hover {
    color: var(--accent-cyan);
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.7);
}

.hero {
    text-align: center;
    padding: 120px 20px;
    background: radial-gradient(ellipse at center, rgba(0, 81, 255, 0.15) 0%, transparent 70%);
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 3px;
    text-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 40px;
}

.btn {
    display: inline-block;
    padding: 15px 40px;
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-cyan));
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 2px;
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
    border: 1px solid var(--accent-cyan);
    transition: all 0.3s ease;
}

.btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 40px rgba(0, 240, 255, 0.6);
    background: linear-gradient(45deg, var(--accent-cyan), var(--accent-blue));
}

section {
    padding: 80px 10%;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 3px;
}

/* Whitepaper Intro / Abstract */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: var(--bg-card);
    padding: 40px 30px;
    border-radius: 8px;
    border: 1px solid rgba(0, 240, 255, 0.15);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 3px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 240, 255, 0.5);
    box-shadow: 0 10px 30px rgba(0, 240, 255, 0.1);
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #fff;
}

.roadmap-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.roadmap-timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background: rgba(0, 240, 255, 0.3);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
}

.roadmap-item {
    padding: 20px 40px;
    position: relative;
    background: inherit;
    width: 50%;
}

.roadmap-item::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    right: -8px;
    background: var(--bg-dark);
    border: 2px solid var(--accent-cyan);
    top: 25px;
    border-radius: 50%;
    z-index: 1;
    box-shadow: 0 0 10px var(--accent-cyan);
}

.left {
    left: 0;
}

.right {
    left: 50%;
}

.right::after {
    left: -8px;
}

.roadmap-content {
    padding: 25px;
    background: var(--bg-card);
    border-radius: 6px;
    border: 1px solid rgba(0, 240, 255, 0.2);
}

.roadmap-content h3 {
    color: var(--accent-cyan);
    margin-bottom: 10px;
}

footer {
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-card);
    border-top: 1px solid rgba(0, 240, 255, 0.2);
    color: var(--text-muted);
    font-size: 0.9rem;
    letter-spacing: 1px;
}

@media screen and (max-width: 768px) {
    .roadmap-timeline::after {
        left: 31px;
    }
    .roadmap-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    .roadmap-item::after {
        left: 23px;
    }
    .right {
        left: 0%;
    }
}