.glass-nav {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.gradient-text {
    background: linear-gradient(to right, #f59e0b, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.project-card, .adventure-card, .engine-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.project-card:hover, .adventure-card:hover, .engine-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px -10px rgba(245, 158, 11, 0.2);
}

.timeline-line::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 20px;
    width: 2px;
    background: #1e293b;
    z-index: 0;
}
@media (min-width: 768px) {
    .timeline-line::before {
        left: 50%;
        margin-left: -1px;
    }
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: 0.75rem;
}
.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-bg {
    background-image: url('../images/background.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.drone-bg {
    background-image: url('../images/droneimage.jpg'); 
    background-attachment: fixed;
    background-position: center;
    background-size: cover;
}

.about-bg {
    background-image: url('../images/about/cese.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}