html, body {
    height: 100%;
    overflow: hidden;
    background-color: #f4f4f5;
}
#mobile-viewport {
    position: relative;
    width: 100%;
    max-width: 430px;
    height: 100%;
    margin: 0 auto;
    background-color: #fafafa;
    overflow: hidden;
    box-shadow: 0 0 60px rgba(0,0,0,0.15);
}
#main-scroller {
    height: 100%;
    overflow-y: auto;
    scroll-snap-type: y mandatory;
    scrollbar-width: none;
    scroll-behavior: smooth;
}
#main-scroller::-webkit-scrollbar { display: none; }
.snap-section {
    height: 100%;
    width: 100%;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    position: relative;
}
#section-swipe { overflow: hidden; }
#section-details { overflow-y: auto; background: white; }
.card-stack { perspective: 1000px; }
.swipe-card {
    will-change: transform, opacity;
    transition: transform 0.3s ease-out;
    box-shadow: 0 15px 40px -15px rgba(0,0,0,0.2);
}
.swipe-card.dragging { transition: none; cursor: grabbing; }
.no-scrollbar::-webkit-scrollbar { display: none; }
.glass {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}