@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes scrollLineAnim {
    0% { transform: scaleY(0); transform-origin: top; opacity: 0; }
    50% { transform: scaleY(1); transform-origin: top; opacity: 1; }
    51% { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
    100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}

/* Изначально скрываем элементы для анимации */
.pricing-card, .feature-card, .portfolio-card, .about-feature, 
.section-title, .section-subtitle, .timer-banner, .cta-block {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), 
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                border-color 0.5s ease,
                box-shadow 0.5s ease;
}

.pricing-card.fade-in-up, .feature-card.fade-in-up, .portfolio-card.fade-in-up,
.about-feature.fade-in-up, .section-title.fade-in-up, .section-subtitle.fade-in-up,
.timer-banner.fade-in-up, .cta-block.fade-in-up {
    opacity: 1;
    transform: translateY(0);
}

/* Задержки для каскадного появления */
.pricing-card:nth-child(2), .feature-card:nth-child(2), .portfolio-card:nth-child(2) { transition-delay: 0.1s; }
.pricing-card:nth-child(3), .feature-card:nth-child(3), .portfolio-card:nth-child(3) { transition-delay: 0.2s; }
.pricing-card:nth-child(4), .portfolio-card:nth-child(4) { transition-delay: 0.3s; }
.portfolio-card:nth-child(5) { transition-delay: 0.4s; }
.portfolio-card:nth-child(6) { transition-delay: 0.5s; }