:root {
    --bg: #000000;
    --neon-green: #39FF14;
    --font-roboto: 'Roboto', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg);
}

body {
    background-color: var(--bg);
    color: var(--neon-green);
    font-family: var(--font-roboto);
    font-weight: 300;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Mobile-Friendly Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 2rem;
    background: rgba(0, 0, 0, 0.9);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    font-family: var(--font-roboto);
    color: var(--neon-green);
    text-decoration: none;
    font-size: 1.05rem;
    letter-spacing: 0.05rem;
    transition: 0.3s ease;
    position: relative;
    padding: 4px 0;
}

/* Dynamic Highlight */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 1px;
    background: var(--neon-green);
    box-shadow: 0 0 10px var(--neon-green);
    transition: width 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

.nav-link:hover::after {
    width: 100%;
}

/* Main Layout & Image */
.hero-image-section {
    padding-top: 120px;
    max-width: 1100px;
    margin: 0 auto;
    padding-inline: 20px;
}

.image-border {
    width: 100%;
    border: 1px solid var(--neon-green);
}

.main-image {
    width: 100%;
    display: block;
    filter: grayscale(1) contrast(1.1);
}

/* Announcement Section */
.announcement-container {
    max-width: 1100px;
    margin: 4rem auto;
    padding: 0 20px 150px 20px;
}

.text-box {
    border-left: 1px solid var(--neon-green);
    padding-left: 2.5rem;
}

.title {
    font-size: clamp(2rem, 7vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 300;
    text-transform: uppercase;
}

.meta-info {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.8;
}

.accent-line {
    width: 60px;
    height: 1px;
    background: var(--neon-green);
    margin-bottom: 2.5rem;
}

.description {
    font-size: clamp(1.1rem, 3vw, 1.6rem);
    max-width: 800px;
    margin-bottom: 4rem;
}

/* Pre-registration Button */
.pre-reg-btn {
    font-family: var(--font-roboto);
    display: inline-block;
    border: 1px solid var(--neon-green);
    color: var(--neon-green);
    padding: 1rem 3.5rem;
    text-decoration: none;
    font-size: 1.1rem;
    transition: 0.4s ease;
}

.pre-reg-btn:hover {
    background: var(--neon-green);
    color: black;
    box-shadow: 0 0 25px var(--neon-green);
}

/* Responsive Scaling */
@media (max-width: 768px) {
    nav { padding: 1rem; }
    .nav-container { gap: 1.2rem; }
    .nav-link { font-size: 0.95rem; }
    .text-box { padding-left: 1.5rem; }
}