@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@300;400;600&display=swap');
body {
    margin: 0;
    padding: 0;
    font-family: 'Rajdhani', sans-serif;
    background-color: black;
    color: white;
    overflow-x: hidden;
}
/* NAV */
.top-nav {
    position: fixed;
    top: 20px;
    right: 40px;
    z-index: 2000;
}
.nav-link {
    margin-left: 20px;
    color: white;
    text-decoration: none;
    font-size: 20px;
}
.nav-link:hover { opacity: 0.7; }
/* HERO */
.hero {
    position: relative;
    height: 100vh;
    overflow: hidden;
}
.hero-img {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    z-index: 1;
}
.logo {
    position: absolute;
    top: 40px;
    left: 40px;
    width: 120px;
    z-index: 50;
}
/* HOMEPAGE TEXT */
.text-block {
    position: absolute;
    top: 20%;
    right: 10%;
    max-width: 480px;
    z-index: 5;
}
.headline {
    font-size: 48px;
    font-weight: 600;
}
.subtext {
    font-size: 17px;
    line-height: 1.45;
}
/* DIVIDER */
.divider-line {
    width: 100%;
    height: 3px;
    background: white;
}
/* PAGE 2 */
.patent-section {
    position: relative;
    height: 100vh;
    overflow: hidden;
    contain: paint;
    perspective: 1px;
}
.patent-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: translateZ(-1px) scale(2);
}
.patent-content {
    position: absolute;
    top: 18%;
    left: 6%;
    max-width: 580px;
    z-index: 50;
}
.patent-title {
    font-size: 48px;
    font-weight: 600;
}
.patent-list {
    font-size: 20px;
    line-height: 1.55;
    list-style: disc;
    margin-left: 20px;
}
/* LEARN MORE BUTTON */
.learn-more-btn {
    display: inline-block;
    margin-top: 25px;
    padding: 12px 28px;
    border: 2px solid white;
    color: white !important;
    text-decoration: none;
    font-size: 18px;
    letter-spacing: 1px;
}
.learn-more-btn:hover {
    background: white;
    color: black !important;
}
/* CONTACT */
.contact-section {
    position: relative;
    height: 100vh;
    overflow: hidden;
}
.contact-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.contact-content {
    position: absolute;
    top: 20%;
    left: 6%;
    max-width: 500px;
    z-index: 50;
}
.contact-title {
    font-size: 48px;
    font-weight: 600;
}
.contact-item {
    font-size: 20px;
    margin-bottom: 14px;
}
/* FADE-IN */
.fade-in-on-scroll {
    opacity: 0;
    transform: translateY(20px);
}
.fade-in-on-scroll.visible {
    transition: opacity .7s, transform .7s;
    opacity: 1;
    transform: translateY(0);
}
/* LEARN MORE PAGES */
.learnmore-hero {
    position: relative;
    height: 100vh;
    overflow: hidden;
}
.learnmore-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: translateZ(-1px) scale(1.9);
}
.learnmore-content {
    position: absolute;
    top: 20%;
    left: 6%;
    max-width: 700px;
    z-index: 50;
}
.learnmore-title {
    font-size: 48px;
    font-weight: 600;
}
.learnmore-text {
    font-size: 20px;
    line-height: 1.55;
    margin-bottom: 20px;
}