/* انیمیشن محو شدن و بالا آمدن */
.fade-in-up {
    animation-name: fadeInUp;
    animation-duration: 0.8s;
    animation-fill-mode: forwards; /* حفظ حالت پایانی انیمیشن */
    animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

.fade-in {
    animation-name: fadeIn;
    animation-duration: 0.8s;
    animation-fill-mode: forwards;
    animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

.slide-in-right {
    animation-name: slideInRight;
    animation-duration: 0.8s;
    animation-fill-mode: forwards;
    animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

.slide-in-left {
    animation-name: slideInLeft;
    animation-duration: 0.8s;
    animation-fill-mode: forwards;
    animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

/* کلاس‌های تاخیر */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* کلاس‌های سرعت */
.duration-fast { animation-duration: 0.5s; }
.duration-normal { animation-duration: 0.8s; }
.duration-slow { animation-duration: 1.2s; }

/* بهینه‌سازی برای دستگاه‌های با prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
    .fade-in-up,
    .fade-in,
    .slide-in-right,
    .slide-in-left {
        animation: none;
        opacity: 1;
    }
}

/* می‌توانید انیمیشن‌های دیگری مانند fade-in, slide-in-left و ... اضافه کنید */