/* === GLOBAL === */

:root {
    --green: #32d52b;
    --blue: #1da1f2;  /* Official Twitter blue (25-Feb-2018) */
    --red: OrangeRed;
    --text-color-light: White;
    --text-color-dark: Black;
    --text-color-alt: DimGray;
    --text-color-light-link: DimGray;
    --text-color-dark-link: OrangeRed;
    --text-size-small: 13px;
    --text-size-medium: 18px;
    --text-size-large: 28px;
}

/* Thank you Jason Kottke for free font! */
/* http://www.kottke.org/plus/type/silkscreen/index.html */
/* Font has errors when hosted online but works fine using it locally(?) */
@font-face {
    font-family: 'silkscreen';
    src: url('slkscr-webfont.ttf') format('truetype');
}

body {
    margin: 0;
    height: 100vh;
    display: flex;
    font-family: 'silkscreen';
    font-size: var(--text-size-small);
    line-height: 1;  /* Different browsers set to different values by default */
    color: var(--text-color-light);
    text-shadow: 0px 1px 4px rgba(0,0,0,0.2);
    user-select: none;  /* Any selectable text must overwrite this */
}

a:link, a:visited {
    color: var(--text-color-light-link);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Align small text vertically center */
small {
    vertical-align: middle;
}

.button {
    cursor: pointer;
}



/* === MAIN === */

#main-container {
    margin: auto;
    display: grid;
    padding: 10px;
    grid-template-columns: auto 452px auto;
    grid-template-rows: 452px auto;
    grid-template-areas:
        "slider-left game slider-right"
        ". slider-bottom .";
}



/* === GAME === **/

#game-container {
    grid-area: game;
    position: relative;
    height: 450px;
    width: 450px;
    border: 1px solid white;
    background: white;
    z-index: 1;  /* Must be on top of sliders */
    overflow: hidden;  /* To make SSAA'd canvas not cause scroll bars */
    box-shadow: 0 1px 7px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.4);
}

#gameCanvas, #textCanvas {
    /* So SSAA-ing doesn't move it incorrectly */
    transform-origin: top left;
    position: absolute;
}

#qr-container, #qr-container-hidden {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    transition: all 0.6s;
    z-index: 2;
    cursor: pointer;
    opacity: 1;
}

#qr-container-hidden {
    cursor: auto;
    opacity: 0.07;
}

/* Center the QR code Canvasnake logo image */
#qr-container img, #qr-container-hidden img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

#qr-container::after {
    content: "- click to play -";
    /* It'd be better if this were positioned in relation to the  */
    /* qr code… But [img]s can't have pseudo-elements so oh well. */
    display: inline-block;
    position: absolute;
    bottom: 26px;
    width: 100%;
    text-align: center;
    color: var(--red);
    opacity: 0;
    transition: opacity 0.1s;
}

#qr-container:hover::after {
    opacity: 1;
}



/* === GENERIC SLIDER === */

.slider-container {
    display: flex;
}

.slider-container img {
    filter: drop-shadow(0px 1px 3px rgba(0,0,0,0.2));
}

.slider {
    box-shadow: 0 1px 6px rgba(0,0,0,0.2), 0 1px 1px rgba(0,0,0,0.3);
    transition-duration: 0.3s;
}

.slider:hover {
    box-shadow: 0 3px 9px rgba(0,0,0,0.2), 0 1px 4px rgba(0,0,0,0.3);
}

@media (max-width: 550px) {
    #slider-container-left, #slider-container-right {
        display: none;
    }
}



/* === SIDE SLIDERS === */

.side.slider {
    margin: 30px 0px;
    transition-duration: 0.1s; /* Hover transition duration */
}

.side.slider > .button {
    --button-size: var(--text-size-large);
    width: var(--button-size); /* Height of button font size */
    padding: 4px;
    display: flex;
    align-items: center;
}

.side.slider > .button > span {
    font-size: var(--button-size);
    transform:
        translateX(calc(0px - var(--button-size)))
        rotate(90deg);
}

.side.slider > .content {
    transition-duration: 0.2s; /* Expanding transition duration */
    position: relative;
}

.side.slider.collapsed > .content {
    /* Using !important to override #slider-menu width's specificity */
    width: 0 !important;
}



/* === LEFT SLIDER === */

#slider-container-left {
    grid-area: slider-left;
}



/* === RIGHT SLIDER === */

#slider-container-right {
    grid-area: slider-right;
}

.right.side.slider {
    --background-color: var(--green);
    background-color: var(--background-color);
    display: flex;
    flex-direction: row-reverse;
}



/* === MENU SLIDER === */

/* The menu slider is currently on the right, but that could be changed! */

#slider-menu {
    --menu-width: 250px;
}

/* To put menu on the other side these need to be left/right flipped. */
#slider-menu.collapsed {
    margin-right: 5px;
}
#slider-menu.collapsed:hover{
    padding-left: 5px;
    margin-right: 0px;
}

#slider-menu .content  {
    width: var(--menu-width);
}

.slider.menu .content ul {
    margin: 0;
    list-style-type: none;
    padding: 15px 10px;
    box-sizing: border-box;
    position: absolute;
    right: 0;
    width: var(--menu-width);
}

/* TODO: Allow more menu items to fit. Perhaps
   using display: flex, or overflow: scroll */
.slider.menu .content ul li {
    font-size: var(--text-size-medium);
    padding: 7px 10px;
}

.slider.menu .content ul li.button:hover > :first-child > span {
    text-decoration: underline;
}

/* Add brackets around "default" settings text */
.slider.menu .content ul li span ~ small::before {
    content: "(";
    display: inline-block;
    margin-left: 0.5em;
}
.slider.menu .content ul li span ~ small::after {
    content: ")";
    display: inline-block;
}

.slider.menu .content ul li .option {
    padding-left: 1px;
}

/* Bullet points (w/text-shadow) for settings options */
.slider.menu .content ul li {
    counter-reset: li;
}
.slider.menu .content ul li .option:before {
    content: counter(li)'.';
    counter-increment: li;
    margin-right:0.5em;
    display: inline-block;  /* Removes underline when selected */
}

.slider.menu .content ul li .option.selected {
    background-color: var(--text-color-light);
    color: var(--background-color);
    text-shadow: none;
    box-shadow: 0px 1px 4px rgba(0,0,0,0.1);
}

.slider.menu .content ul li :nth-child(n+2) {
    font-size: var(--text-size-small);
    margin: 2px;
}

.slider.menu .content ul li .description {
    padding-left: 1em;
}

.slider.menu .content ul li .description::before {
    display: inline-block;
    content: "-";
    width: 1em;
    margin-left: -1em;
}



/* === BOTTOM SLIDERS === */

#slider-container-bottom {
    grid-area: slider-bottom;
    justify-content: center;
}

.slider.bottom > p {
    display: block;
    margin: 0;
    padding: 16px 8px 1px 8px;
}

.bottom.slider {
    align-self: flex-start;
    text-align: center;
}

.bottom.slider.small {
    margin: 0px 10px;
    transform: translateY(calc(-100% + 68px));
}

.bottom.slider:hover {
    transform: translateY(0);
}

#slider-mobile {
    background-color: var(--green);
    width: 150px;
}

#slider-twitter {
    background-color: var(--blue);
    width: 95px;
}

#slider-about {
    background-color: var(--red);
    width: 64px;
}

.bottom.slider.large {
    position: absolute;
    width: 380px;
    background-color: white;
    color: black;
    line-height: calc(var(--text-size-small) + 2px);
    padding: 12px 0 0 0;
}

.bottom.slider.large a {
    color: var(--red);
}

.bottom.slider.large p {
    padding: 5px;
}

.bottom.slider.large .button {
    padding-bottom: 11px;
}

.bottom.slider.large .button:hover {
    text-decoration: underline;
}

#about-popout {
}
#about-popout.hidden {
    transform: translateY(-110%);
}