/* Default for very small screens (phones) */
html {
    font-size: 12px;
}

/* Small phones (320px - 480px) */
@media (min-width: 320px) {
    html {
        font-size: 12px;
    }
}

/* Small tablets or large phones (481px - 767px) */
@media (min-width: 481px) {
    html {
        font-size: 12px;
    }
}

/* Medium screens (tablets) */
@media (min-width: 768px) {
    html {
        font-size: 13px;
    }
}

/* Large tablets or small laptops (1024px - 1199px) */
@media (min-width: 1024px) {
    html {
        font-size: 14px;
    }
}

/* Standard desktops (1200px - 1399px) */
@media (min-width: 1200px) {
    html {
        font-size: 14px;
    }
}

/* Large desktops or smaller 4K screens (1400px - 1919px) */
@media (min-width: 1400px) {
    html {
        font-size: 15px;
    }
}

/* 2K monitors (1920px - 2559px) */
@media (min-width: 1920px) {
    html {
        font-size: 18px;
    }
}

/* Large 2K monitors (2560px - 3839px) */
@media (min-width: 2560px) {
    html {
        font-size: 19px;
    }
}

/* 4K monitors (3840px - 5119px) */
@media (min-width: 3840px) {
    html {
        font-size: 20px;
    }
}

/* Ultra-wide 5K screens (5120px and above) */
@media (min-width: 5120px) {
    html {
        font-size: 21px;
    }
}