.glass-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 16px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
}
@supports not (backdrop-filter: blur(12px)) {
    .glass-card {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }
}

.ad-container { display: none; }
@media (min-width: 992px) {
    .ad-container { display: block; }
}

body { 
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%); 
    min-height: 100vh; 
    display: flex; 
    flex-direction: column; 
}
main { flex: 1; }
.navbar-brand { font-weight: bold; letter-spacing: 1px; }
.hero-section { background: rgba(255,255,255,0.6); border-radius: 16px; }

footer { 
    width: 100%; 
    position: relative; 
    z-index: 1; 
}