/* base */

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

ul {
    list-style: none;
}

:root {
    --neko-scale: 0.8;
}

button {
    all: unset;
    cursor: pointer;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

@font-face {
    font-family: 'dot16';
    src: url('/static/font/dot16.woff2');
}

body {
    /* font-family: dot16; */
}

.container {
    width: 100%;
    height: 100vh;
    display: flex;
}



/* main */

main {
    order: 2;
    flex-grow: 1;
    background: url(/static/img/bg2.jpeg);
    overflow-x: hidden;
    overflow-y: auto;
}

#neko-page {
    display: none;
}

.neko-page__sub {
    display: none;
}

.neko-page__sub.open {
    display: block;
}

.neko-page__sub img {
    position: absolute;
    width: 50%;
    height: auto;
    display: block;
    opacity: 0;
    transform: translateY(30px);
}

.neko-page__sub.show img {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 1s ease, transform 1s ease;
}
.neko-page__sub.show img[data-order="2"] {
    transition-delay: 0.5s;
}
.neko-page__sub.show img[data-order="3"] {
    transition-delay: 1s;
}
.neko-page__sub.show img[data-order="4"] {
    transition-delay: 1.5s;
}

.neko-page__canvas {
    position: relative;
    height: 100vh;
}

main>div {
    text-align: center;
    padding-top: var(--main-padding, 1rem);
    padding-bottom: var(--main-padding, 1rem);
    padding-left: var(--main-padding, 0);
    padding-right: var(--main-padding, 0);
}

.title {
    font-size: 3rem;
    font-weight: bold;
    width: fit-content;
    margin: 0 auto;
    position: relative;
}

.title>span {
    display: block;
    font-size: inherit;
    width: fit-content;
    background: linear-gradient(to right,
            red,
            orange,
            yellow,
            green,
            blue,
            indigo);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transform: skew(10deg);
}

.title::before {
    content: attr(data-text);
    width: fit-content;
    position: absolute;
    inset: 0;
    color: #0006;
    transform: skew(40deg) scaleY(0.4) translateY(-20%);
    transform-origin: bottom;
    filter: blur(2px);
}

.image-index {
    position: relative;
    margin: 0 auto;
    border-top: 30px ridge #942;
    border-bottom: 30px ridge #942;
}

.image-index>img {
    width: 100%;
    height: auto;
    display: block;
}

.image-index__neko {
    position: absolute;
    transform: translate(-50%, -50%) scale(var(--neko-scale));
    border-radius: 50%;
    transition: opacity 0.3s ease, filter 0.2s ease;
}

.image-index__neko::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url(/static/img/cats-sprite.png);
    background-size: 136px 419px;
    background-repeat: no-repeat;
    border-radius: 50%;
    mask-image: radial-gradient(ellipse at center,
            black 55%,
            transparent 80%);
}

.image-index__neko:not(.active) {
    opacity: 0;
}

.image-index__neko.active {
    animation: wobble 5s ease-in-out infinite;
    opacity: 1;
}

.image-index__neko.active:active {
    filter: brightness(1.15);
}

.image-index__neko.active::after,
.frame-index__neko {
    font-weight: bold;
    color: var(--neko-text-color, #000);
    text-shadow:
        2px 2px var(--neko-stroke-color, #FFF),
        -2px 2px var(--neko-stroke-color, #FFF),
        2px -2px var(--neko-stroke-color, #FFF),
        -2px -2px var(--neko-stroke-color, #FFF),
        2px 0 var(--neko-stroke-color, #FFF),
        -2px 0 var(--neko-stroke-color, #FFF),
        0 2px var(--neko-stroke-color, #FFF),
        0 -2px var(--neko-stroke-color, #FFF),
        0 4px 4px #003;
}


.image-index__neko.active::after {
    content: attr(data-name);
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -100%) scaleX(1.1);
    font-size: calc(1.5rem * var(--neko-scale));
}

.image-index__neko[data-name=su] {
    top: 26%;
    left: 20%;
    width: 103px;
    height: 66px;
    --neko-text-color: #666;
}

.image-index__neko[data-name=su]::before {
    background-position: 0 0;
}

.image-index__neko[data-name=mi] {
    top: 67%;
    left: 66%;
    width: 107px;
    height: 84px;
    --neko-text-color: #a62;
}

.image-index__neko[data-name=mi]::before {
    background-position: 0 -64px;
}

.image-index__neko[data-name=non] {
    top: 77%;
    left: 47%;
    width: 126px;
    height: 96px;
    --neko-text-color: #FFF;
    --neko-stroke-color: #000;
}

.image-index__neko[data-name=non]::before {
    background-position: 0 -152px;
}

.image-index__neko[data-name=bon] {
    top: 58%;
    left: 89%;
    width: 136px;
    height: 103px;
    --neko-text-color: #000;
}

.image-index__neko[data-name=bon]::before {
    background-position: 0 -252px;
}

.image-index__neko[data-name=ma] {
    top: 43%;
    left: 67%;
    width: 92px;
    height: 66px;
    --neko-text-color: #640;
}

.image-index__neko[data-name=ma]::before {
    background-position: 0 -356px;
}

.button-back {
    color: #00F;
    text-decoration: underline;
}

.button-back:hover {
    color: #F00;
}

hr {
    margin: 1.5rem auto;
    width: 100%;
}

/* styles */

.marquee {
    text-align: left;
    animation: marquee 30s linear infinite;
    white-space: nowrap;
}

.blink {
    animation: blink 1s infinite;
}

.red {
    color: red;
}

.blue {
    color: blue;
}


/* pseudo frameset */

nav {
    display: none;
}

.frame-index {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
}

.frame-index__neko {
    display: block;
    width: 100%;
    text-align: center;
    box-shadow: 0 0.7rem 1rem #FFFa inset, 0 -0.7rem 1rem #000a inset;
    padding: 1rem 0.5rem;
    border-radius: 3rem;
    font-size: 1.5rem;
    transition: transform 0.5s;
}

.frame-index__neko:hover {
    animation: gummyBounce 0.6s ease;
}

.frame-index__neko:active {
    animation: gummyPress 0.3s ease forwards;
}

.frame-index__neko[data-name=su] {
    background-color: #ddd;
    background-image: linear-gradient(45deg,
            #000 25%,
            transparent 25%,
            transparent 50%,
            #000 50%,
            #000 75%,
            transparent 75%);
    background-size: 10px 10px;
}

.frame-index__neko[data-name=mi] {
    background-color: #ddd;
    background-image: linear-gradient(45deg,
            #a62 25%,
            transparent 25%,
            transparent 30%,
            #a62 50%,
            #a62 90%,
            transparent 90%);
    background-size: 10px 10px;
}

.frame-index__neko[data-name=non] {
    background-color: #FFF;
    background-image: linear-gradient(45deg,
            #f6f3ee 25%,
            transparent 25%,
            transparent 50%,
            #f6f3ee 50%,
            #f6f3ee 75%,
            transparent 75%);
    background-size: 10px 10px;
}

.frame-index__neko[data-name=bon] {
    background-color: #000;
}

.frame-index__neko[data-name=ma] {
    background-color: #640;
    background-image: linear-gradient(135deg,
            #000 25%,
            transparent 25%,
            transparent 50%,
            #000 50%,
            #000 75%,
            transparent 75%);
    background-size: 10px 10px;
}


/* animations */
@keyframes marquee {
    0% {
        transform: translateX(100%);
    }

    100% {
        transform: translateX(-100%);
    }
}

@keyframes blink {

    0%,
    49% {
        opacity: 1;
    }

    50%,
    100% {
        opacity: 0;
    }
}

@keyframes wobble {

    0%,
    100% {
        transform: translate(-50%, -50%) translateY(0px) rotate(0deg) scale(calc(var(--neko-scale) * 1.2));
    }

    25% {
        transform: translate(-50%, -50%) translateY(-5px) rotate(2deg) scale(calc(var(--neko-scale) * 1.3));
    }

    50% {
        transform: translate(-50%, -50%) translateY(0px) rotate(0deg) scale(calc(var(--neko-scale) * 1.3));
    }

    75% {
        transform: translate(-50%, -50%) translateY(-5px) rotate(-2deg) scale(calc(var(--neko-scale) * 1.4));
    }
}



@keyframes gummyBounce {
    0% {
        transform: scale(1, 1);
    }

    30% {
        transform: scale(1.15, 0.75);
    }

    50% {
        transform: scale(0.9, 1.1);
    }

    70% {
        transform: scale(1.05, 0.95);
    }

    100% {
        transform: scale(1, 1);
    }
}

@keyframes gummyPress {
    0% {
        transform: scale(1.15);
    }

    40% {
        transform: scale(0.85, 1.2);
    }

    70% {
        transform: scale(1.05, 0.95);
    }

    100% {
        transform: scale(0.95, 1.05);
    }
}


/* media */

@media (min-width: 480px) {
    :root {
        --main-padding: 2rem;
        --title-size: 4.5rem;
        --neko-scale: 0.9;
    }

    .image-index {
        max-width: 600px;
        border: 30px ridge #942;
        border-radius: 100px;
        overflow: hidden;
    }
}

@media (min-width: 728px) {
    :root {
        --main-padding: 3rem;
        --title-size: 6rem;
        --neko-scale: 1;
    }

    nav {
        display: block;
        order: 1;
        flex-shrink: 0;
        background: url(/static/img/bg.jpg);
        width: 200px;
        overflow-x: hidden;
        overflow-y: auto;
    }
}