/* main */
::-webkit-scrollbar { width: 16px; }
::-webkit-scrollbar-track { background: #333; }
::-webkit-scrollbar-thumb { background: rgba(0, 255, 255, .75); }
::-webkit-scrollbar-thumb:hover { background: #555; }

::selection {
    color: #fff;
    background: #555;
}

:root {
    --vh: 1vh;
    --vw: 1vw;
    --fixedVH: 1vh;
    --fixedVW: 1vw;
    --sh: 300vh;
}

* {
    box-sizing: border-box;
}

body {
    position: relative;
    background: #171717;
    color: #eef;
    font-family: Tahoma, Geneva, sans-serif;
    font-size: 16px;
    margin: 0;
    padding-top: 40px; /* top scroller */
    line-height: 1.4;
}

p {
    margin: .5em 0 0;
}

a {
    color: rgba(255, 255, 255, .9);
    text-decoration: underline;
    text-decoration-style: dotted;
}
a:hover {
    color: #fff;
}

.nowrap {
    white-space: nowrap;
}

h1, h2, h3 {
    margin: 0;
    line-height: 1.3;
}

h1 {
    font-size: 2em;
    font-weight: 400;
}

h2 {
    font-size: 1.25em;
    font-weight: 400;
}

h3 {
    font-size: 1em;
    font-weight: 400;
}

@media (min-width: 769px) {
    h1, h2, h3 {
        line-height: 1.4;
    }
}

ul {
    list-style: disc;
    margin: 1em 0;
}

ul ul {
    margin: 0 0 .5em;
}

.slick-slider .slick-prev, .slick-slider .slick-next {
    z-index: 2;
}
.slick-list {
    user-select: text;
    overflow: visible;
}
.slick-list.draggable {
    user-select: none;
}

/* Screens */
.screen {
    display: flex;
    align-items: center;
    justify-items: center;
}

.screen_content {
    position: relative;
    max-width: 1700px;
    margin: 0 auto;
    width: 100%;
}

/* Screen: Hello */
.screen-hello {
    min-height: calc(100 * var(--vh));
    padding: 30px;
    border-bottom: 1px dashed rgba(255, 255, 255, .1);
}

.screen-hello .advantages {
    position: relative;
    transition: top .5s ease;
    margin: 20px auto;
    font-size: 1.5rem;
    will-change: top;
}

.screen-hello .advantages .slick-list {
    margin: 0 -10px;
}
.screen-hello .advantages .slick-slide {
    margin: 0 10px;
}

.screen-hello .advantages .slick-slide > div {
    display: flex;
    justify-content: center;
}

.screen-hello .advantages .advantage {
    position: relative;
    transition: margin-top .5s ease;
    aspect-ratio: 1/1;
    padding: 20px 5px;
    text-align: center;
    display: flex;
    align-content: center;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 440px;
    background: rgba(0, 0, 0, .25);
}

.screen-hello .advantages .advantage-from_zero {
    border: 1px dashed rgba(0, 225, 0, .5);
}
.screen-hello .advantages .advantage-from_zero h2 {
    color: rgba(0, 225, 0, 1);
}

.screen-hello .advantages .advantage-existing_project {
    border: 1px dashed rgba(0, 0, 225, .5);
}
.screen-hello .advantages .advantage-existing_project h2 {
    color: rgba(0, 100, 245, 1);
}

.screen-hello .advantages .advantage-out_of_the_box {
    border: 1px dashed rgba(255, 175, 0, .5);
}
.screen-hello .advantages .advantage-out_of_the_box h2 {
    color: rgba(255, 175, 0, 1);
}

.screen-hello .advantages .advantage h2 {
    margin-bottom: .25em;
    font-weight: 600;
}

.screen-hello .advantages .advantage h2 .asterisk {
    display: inline-block;
    vertical-align: super;
    font-size: 1.5rem;
    font-weight: 400;
    color: #fff;
    margin-right: -13px;
}

.screen-hello .advantages .advantage h3 {
    margin-bottom: .25em;
    font-size: .75em;
    font-weight: 600;
    font-style: italic;
    margin-left: -.5em;
}

.screen-hello .advantages .advantage .action_wrap {
    margin-top: .29em;
}

.screen-hello .advantages .advantage .asterisk_description {
    position: absolute;
    bottom: 10px;
    font-size: 1rem;
    opacity: .9;
}

@media (min-width: 769px) {
    .screen-hello {
        padding: 60px;
    }
    .screen-hello .advantages {
        font-size: 1.5rem;
    }
}

@media (min-width: 992px) {
    .screen-hello .advantages {
        font-size: 1.3rem;
    }
}

@media (min-width: 1200px) {
    .screen-hello .advantages {
        font-size: 1.5rem;
    }
}

@media (min-width: 1400px) {
    .screen-hello .advantages {
        font-size: 2rem;
    }
}

/* Screen: Services */
.screen-services {
    min-height: calc(100 * var(--vh));
    padding: 30px;
    position: relative;
    border-bottom: 1px dashed rgba(255, 255, 255, .1);
    background: #272727;
}

.screen-services .screen_background {
    position: absolute;
    pointer-events: none;
    user-select: none;
    top: 30%;
    right: 10%;
    opacity: 0;
    transition: margin-top .5s ease;
    transform: translateY(-50%);
    text-shadow:
            0 0 20px rgba(255, 255, 255, .5),
            0 0 30px rgba(255, 255, 255, .5),
            0 0 35px rgba(255, 255, 255, .3);
    will-change: margin-top;
}

.screen-services .screen_background .lighting {
    transition: opacity .5s;
}
.screen-services .screen_background .lighting:not(.on) {
    opacity: 0;
}
.screen-services .screen_background .lighting.on {
    opacity: 1;
}

.screen-services .screen_background h1 {
    color: rgba(255, 255, 255, 1);
    font-size: 500%;
}

.screen-services .service_description {
    margin: 25px 0;
}

.screen-services .service_description h2 {
    margin-top: 10px;
}

.screen-services .service_description .discuss {
    display: inline-block;
    margin-top: 10px;
}

@media (min-width: 769px) {
    .screen-services {
        padding: 60px;
    }
    .screen-services .screen_background {
        opacity: 1;
    }
    .screen-services .service_description {
        margin: 50px 0;
    }
    .screen-services .service_description h2 {
        margin-top: 25px;
    }
}

/* Screen: Details */
.screen-details {
    position: relative;
    min-height: calc(100 * var(--vh));
    padding: 30px 30px 110px;
}

.screen-details .screen_background {
    position: absolute;
    pointer-events: none;
    user-select: none;
    top: -10%;
    right: 10%;
    opacity: 0;
    transition: margin-top .5s ease;
    transform: translateY(-50%);
    text-shadow:
            0 0 20px rgba(255, 255, 255, .5),
            0 0 30px rgba(255, 255, 255, .5),
            0 0 35px rgba(255, 255, 255, .3);
    will-change: margin-top;
}

.screen-details .screen_background .lighting {
    transition: opacity .5s;
}
.screen-details .screen_background .lighting:not(.on) {
    opacity: 0;
}
.screen-details .screen_background .lighting.on {
    opacity: 1;
}

.screen-details .screen_background h1 {
    color: rgba(255, 255, 255, 1);
    font-size: 500%;
}

.screen-details .screen_content > h1 {
    margin-bottom: 10px;
}

.screen-details .screen_footer {
    position: absolute;
    bottom: 0;
    right: 0;
    left: 0;
    height: 80px;
    background: rgba(255, 255, 255, .2);
    display: flex;
    align-items: center;
    justify-content: center;
}

.screen-details .screen_footer .hosting {
    position: absolute;
    left: 4px;
    bottom: 4px;
    font-size: .75em;
    color: #999;
}
.screen-details .screen_footer .hosting img {
    margin-right: 3px;
}

@media (min-width: 769px) {
    .screen-details {
        padding: 60px 60px 150px;
    }
    .screen-details .screen_background {
        opacity: 1;
    }
}

/* Mfp */
.mfp-block {
    position: relative;
    background: #fff;
    color: #000;
    margin: 2rem auto;
    padding: 1rem;
    max-width: 800px;
}
.mfp-block-title {
    margin-right: 44px;
    font-size: 1.25em;
    font-weight: 600;
}
.mfp-block .mfp-block-content a {
    color: #555;
}
.mfp-block .mfp-block-content a:hover {
    color: #333;
}
.mfp-block .mfp-block-content .btn {
    display: inline-block;
    margin: .5em 0;
    padding: .25em .4em;
    font-size: inherit;
    background: #222;
    color: #fff;
    cursor: pointer;
}

.mfp-block#interested-in {
    font-size: 1.5em;
}


@media (min-width: 769px) {
    .mfp-block#interested-in {
        font-size: 2em;
    }
}

/* Background chess */
.background_chess_wrap {
    position: absolute;
    pointer-events: none;
    user-select: none;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    opacity: .04;
}

.background_chess {
    position: absolute;
    top: 50%;
    right: 0;
    --cell-size: calc(var(--sh) * 7);
    transition: margin-top .8s ease;
    will-change: margin-top;
}

.background_chess .chess {
    position: relative;
    transform-style: preserve-3d;
    transform: translateY(-50%) perspective(90cm) rotate3d(1, 1.5, -.1, 15deg);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.background_chess .chess:after {
    display: block;
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, .5) 0%, rgba(0, 0, 0, .8) 40%, rgba(0, 0, 0, .5) 100%);
}

.background_chess .chess .chess_row {
    display: flex;
    flex-direction: row;
    justify-content: flex-start;
}

.background_chess .chess .chess_row .chess_cell {
    width: var(--cell-size);
    height: var(--cell-size);
    color: #777;
    display: flex;
    align-items: center;
    justify-content: center;
}

.background_chess .chess .chess_row:nth-child(odd) .chess_cell:nth-child(even) {
    background: white;
}
.background_chess .chess .chess_row:nth-child(even) .chess_cell:nth-child(odd) {
    background: white;
}

.background_chess .chess .fig_php {
    background: purple;
    color: #fff;
    padding: .25em .5em;
    border-radius: 50%;
    transform: rotate3d(-1, -1, -1, 15deg);
}

/* Scroller */
.scroller {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    background: rgba(255, 255, 255, .1);
    backdrop-filter: blur(40px) brightness(.5);
}

.scroller .line .fill {
    height: 40px;
    background: rgba(0, 255, 255, .75);
    transition: width .5s ease;
}

.scroller .line .current {
    position: absolute;
    top: 0;
    left: 0;
    height: 60px;
    padding: 4px 0 0 4px;
    font-size: 1.5em;
    user-select: none;
    pointer-events: none;
}