html, body {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

html::-webkit-scrollbar, body::-webkit-scrollbar {
    display: none;
}

.grain-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.04;
}

.bg-concrete {
    background-color: #0a0a0a;
    background-image: 
        linear-gradient(rgba(15, 15, 15, 0.85), rgba(15, 15, 15, 0.85)),
        url('https://images.unsplash.com/photo-1518099074172-2e47ee6cb392?ixlib=rb-4.0.3&auto=format&fit=crop&w=2000&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.hotspot-panel {
    transition: opacity 0.3s ease, transform 0.3s ease;
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
}

.hotspot:hover .hotspot-panel {
    opacity: 1;
    transform: translateY(0);
}

.intake-input {
    border: none;
    border-bottom: 1px solid #e2e2e7;
    background: transparent;
    border-radius: 0;
    padding: 12px 0;
    transition: border-color 0.3s ease;
}

.intake-input:focus {
    outline: none;
    border-bottom-color: #ffffff;
    box-shadow: none;
}

.blueprint-line {
    position: absolute;
    background-color: rgba(255, 255, 255, 0.1);
}

@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    50.1% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

.animate-scroll-line {
    animation: scrollLine 2s cubic-bezier(0.77, 0, 0.175, 1) infinite;
}