*, *:before, *:after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*:focus {
    outline: none;
}

body {
    font-family: serif;
}

:root {
    --background-colour: white;
    --text-colour: black;
    --dice-base-colour: white;
    --dice-keeping-colour: silver;
    --dice-kept-colour: goldenrod;

    --fs-header: 10rem;
    --fs-large: 8rem;
    --fs-medium: 2.5rem;
    --fs-small: 2rem;
    --fs-nav: 2rem;
    --fs-btn: 3rem;
}

@media(max-width: 675px)
{
    :root {
        --fs-header: 8rem;
        --fs-large: 6rem;
        --fs-medium: 2rem;
        --fs-small: 1.5rem;
        --fs-nav: 1.5rem;
        --fs-btn: 2rem;
    }
}

@media(max-width: 350px)
{
    :root {
        --fs-header: 7rem;
        --fs-large: 5rem;
        --fs-btn: 1.5rem;
    }
}

html {
    font-size: 62.5%;
}

h1 {
    font-size: var(--fs-header);
}

h3 {
    font-size: var(--fs-small);
}

p {
    font-size: var(--fs-medium);
}

a {
    text-decoration: none;
}

/* *** NAV BAR *** */

.nav-menu-bar {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    top: 0;
    width: 100%;
    padding: 2rem;
}

.nav-link {
    border: none;
    font-size: var(--fs-nav);
    font-family: serif;
    text-transform: uppercase;
    background-color: var(--background-colour);
    cursor: pointer;
    color: var(--text-colour);
}

.nav-link:hover, .nav-link:focus {
    text-decoration: underline;
}

/* *** MAIN *** */

.section-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    padding-bottom: 8rem;
}

.cont-main {
    display: flex;
    align-items: center;
    flex-direction: column;
    justify-content: space-evenly;
    width: 70%;
    height: 70%;
}

.container {
    margin: 1rem;
}

/* *** SCORE BOX *** */

.cont-score {
    display: flex;
    gap: 2.5rem;
}

.score-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.score-box-text {
    flex: 1;
    text-align: center;
}

/* *** DICE *** */

.cont-dice {
    display: grid;
    gap: 0.5rem;
    grid-template-columns: repeat(6, 1fr);
}

.die {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 8rem;
    height: 8rem;
    border: solid;
    border-radius: 10px;
    font-family: serif;
    text-transform: uppercase;
    font-size: var(--fs-large);
    background-color: var(--background-colour);
}

.die:hover:enabled, .die:focus {
    border-width: 5px;
}

/* .die */

/* *** BUTTONS *** */

.btn-cont {
    display: flex;
    justify-content: space-evenly;
    max-width: 50rem;
    width: 70%;
}

.game-btn {
    width: 40%;
    padding: 1rem 0.2rem;
    border: solid;
    border-radius: 10px;
    font-family: serif;
    font-size: var(--fs-btn);
    background-color: var(--background-colour);
    cursor: pointer;
}

.game-btn:hover:enabled, .game-btn:focus {
    background-color: var(--text-colour);
    color: var(--background-colour);
}

/* *** MODAL *** */

#rules-modal {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    width: 70%;
    padding: 6rem;
    border: 0px;
    border-radius: 5px;
    box-shadow: 0 3rem 5rem rgba(0, 0, 0, 0.3);
    background-color: var(--background-colour);
}

#rule-modal::backdrop {
    background-color: rgba(0, 0, 0, 0.6);
}

body:has(dialog[open]) {
    filter: blur(3px);
  }

#close-modal-btn {
    position: absolute;
    top: 1rem;
    right: 2rem;
    border: none;
    font-size: 5rem;
    background: none;
    cursor: pointer;
}

#close-modal-btn:hover, #close-modal-btn:focus {
    background-color: var(--text-colour);
    color: var(--background-colour);
}

.rules-header {
    padding-bottom: 2rem;
    font-size: var(--fs-medium);
}

.dialog-content > p {
    padding-bottom: 2rem;
    font-size: var(--fs-small);
}

/* *** TABLE *** */

table {
    width: 100%;
    margin-bottom: 2rem;
    table-layout: fixed;
    border-collapse: collapse;
}

caption, td {
    text-align: left;
    font-size: var(--fs-small);
}

td {
    padding-left: 2px;
    border: solid 2px
}

 /* *** VISIBILITY *** */

.hidden {
    display: none
}

.invisible {
    visibility: hidden;
}

/* *** MEDIA QUERIES *** */

@media(max-width: 675px){
    .cont-dice {
        grid-template-columns: repeat(3, 1fr);
    }

    .die{
        height: 7rem;
        width: 7rem;
    }
}

@media(max-width: 350px){

    .die{
        height: 6rem;
        width: 6rem;
    }
}