/* Animation styles */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* Apply animations to elements */
.advantage-card,
.service-card,
.pricing-card,
.experience__card,
.stages__item {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.advantage-card.animated,
.service-card.animated,
.pricing-card.animated,
.experience__card.animated,
.stages__item.animated {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animation for multiple items */
.advantage-card:nth-child(1),
.service-card:nth-child(1),
.pricing-card:nth-child(1),
.experience__card:nth-child(1),
.stages__item:nth-child(1) {
    transition-delay: 0.1s;
}

.advantage-card:nth-child(2),
.service-card:nth-child(2),
.pricing-card:nth-child(2),
.experience__card:nth-child(2),
.stages__item:nth-child(2) {
    transition-delay: 0.2s;
}

.advantage-card:nth-child(3),
.service-card:nth-child(3),
.pricing-card:nth-child(3),
.experience__card:nth-child(3),
.stages__item:nth-child(3) {
    transition-delay: 0.3s;
}

.advantage-card:nth-child(4),
.service-card:nth-child(4),
.stages__item:nth-child(4) {
    transition-delay: 0.4s;
}

.advantage-card:nth-child(5),
.service-card:nth-child(5),
.stages__item:nth-child(5) {
    transition-delay: 0.5s;
}

.advantage-card:nth-child(6),
.service-card:nth-child(6) {
    transition-delay: 0.6s;
}

.advantage-card:nth-child(7),
.service-card:nth-child(7) {
    transition-delay: 0.7s;
}

.advantage-card:nth-child(8),
.service-card:nth-child(8) {
    transition-delay: 0.8s;
}

/* Mobile menu transition */
.nav {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: auto;
        background-color: #fff;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        padding: 20px;
        transform: translateY(-100%);
        opacity: 0;
        z-index: 90;
    }
    
    .nav.is-active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .nav__list {
        flex-direction: column;
    }
    
    .nav__item:not(:last-child) {
        margin-right: 0;
        margin-bottom: 15px;
    }
    
    .burger.is-active .burger__line:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    
    .burger.is-active .burger__line:nth-child(2) {
        opacity: 0;
    }
    
    .burger.is-active .burger__line:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
}

/* Button hover animation */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.3);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

.btn:hover::after {
    animation: ripple 1s ease-out;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 0.5;
    }
    20% {
        transform: scale(25, 25);
        opacity: 0.3;
    }
    100% {
        opacity: 0;
        transform: scale(40, 40);
    }
}

/* Service card hover animation */
.service-card:hover .service-card__title {
    color: var(--color-secondary);
}

/* Custom animations for specific sections */
.section-title {
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background-color: var(--color-secondary);
    transition: width 0.6s ease, left 0.6s ease;
}

.section-title.animated::after {
    width: 60px;
    left: calc(50% - 30px);
}

/* Loading animation for dynamic content */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
}

.loading::after {
    content: '';
    width: 30px;
    height: 30px;
    border: 3px solid var(--color-border);
    border-radius: 50%;
    border-top-color: var(--color-secondary);
    animation: spinner 0.8s linear infinite;
}

@keyframes spinner {
    to {
        transform: rotate(360deg);
    }
}

/* Modal animation */
.service-modal__content {
    transform: translate(-50%, -60%);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.service-modal.is-active .service-modal__content {
    transform: translate(-50%, -50%);
    opacity: 1;
}

.service-modal__overlay {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.service-modal.is-active .service-modal__overlay {
    opacity: 1;
}