html {
    scroll-behavior: smooth;
    scroll-snap-type: y proximity;
    scroll-padding-top: 7rem;
}

body > section,
body > footer {
    scroll-snap-align: start;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}

.bg-hero {
    background-image: linear-gradient(rgba(15, 23, 42, 0.75), rgba(15, 23, 42, 0.75)), url('../images/truck_transport.jpeg');
    background-size: cover;
    background-position: center;
}

.premium-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px); 
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
}

.premium-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.premium-btn {
    background: linear-gradient(135deg, #0052D4, #4364F7);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 14px 28px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(67, 100, 247, 0.4);
    display: inline-block; 
}

.premium-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(67, 100, 247, 0.6);
    filter: brightness(1.1);
}

.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 65px;
    height: 65px;
    background-color: #25D366;
    color: white;
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    animation: pulse-wa 2s infinite;
}

.whatsapp-btn:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.6);
    animation: none; 
    color: white;
}

.whatsapp-btn svg {
    width: 35px;
    height: 35px;
    fill: currentColor;
}

@keyframes pulse-wa {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

@media (max-width: 768px) {
    .whatsapp-btn {
        width: 55px;
        height: 55px;
        bottom: 20px;
        right: 20px;
    }
    .whatsapp-btn svg {
        width: 30px;
        height: 30px;
    }
}