.mobile-bottom-nav {
    display: none;
}

@media (max-width: 1000px) {
    .mobile-bottom-nav {
        position: fixed;
        bottom: 15px; /* فاصله از پایین */
        left: 15px;   /* فاصله از چپ */
        right: 15px;  /* فاصله از راست */
        background: white;
        border-radius: 25px; /* گرد کردن گوشه‌ها مشابه دسکتاپ */
        z-index: 1000;
        box-shadow: 0 4px 25px rgba(0, 0, 0, 0.08); /* سایه نرم و جذاب */
        display: block;
    }

    .nav-container {
        position: relative;
        display: flex;
        justify-content: space-around;
        align-items: center;
        height: 60px;
        padding: 0 0.5rem;
        overflow: visible;
    }

    .nav-bump {
        position: absolute;
        top: -30px;
        width: 65px;
        height: 31px;
        background: white;
        border-radius: 50px 50px 0 0;
        pointer-events: none;
        z-index: 2;
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.03);
        will-change: left;
        transition: left 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .nav-bump.no-transition {
        transition: none;
    }

    .bottom-nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 0.25rem;
        padding: 0.5rem 0.5rem;
        color: #6b7280;
        text-decoration: none;
        font-size: 0.75rem;
        transition: all 0.3s ease;
        flex: 1;
        position: relative;
        z-index: 3;
        cursor: pointer;
    }

    .bottom-nav-item i {
        font-size: 1.4rem;
        transition: all 0.3s ease;
        color: #6b7280;
    }

    .bottom-nav-item span {
        font-weight: 400;
        transition: all 0.3s ease;
    }

    .bottom-nav-item.active i {
        font-size: 2rem;
        transform: translateY(-12px);
        color: #3b82f6;
        margin-bottom: 1rem;
    }

    .bottom-nav-item.active span {
        opacity: 0;
    }
}

@media (max-width: 640px) {
    .bottom-nav-item span {
        font-size: 0.7rem;
    }
}

@media (max-width: 400px) {
    .bottom-nav-item span {
        display: none;
    }
}