/* @author Iaroslav Kalegin (twent) - i@twent.ru */

/*
Styles reset
*/
* {
    box-sizing: border-box;
}
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section {
	display: block;
}
body {
	line-height: 1;
}
ol, ul {
	list-style: none;
}
blockquote, q {
	quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
	content: '';
	content: none;
}
table {
	border-collapse: collapse;
	border-spacing: 0;
}
a {
    color: unset;
    text-decoration: unset;
}

/* Base styles */
:root {
    font-family: "Inter", sans-serif;
    font-optical-sizing: auto;
    font-weight: 400;
    font-style: normal;
    --color-red-original: #E53D26;
    --color-red: #D44B37;
    --color-red-blue: #E53D26;
    --color-blue-original: #4895CE;
    --color-blue: #5C93C8;
    --color-bue-red: #4895CE;
    --color-white: #FCFCFC;
    --color-black: #000;
    --color-gray: #C4C4C4;
    --color-gray-transparent: rgba(196, 196, 196, 0.15);
    --color-dark-grey: #4C4C4C;

    --bg-color: var(--color-white);
    --bg-dark-color: rgb(48, 48, 48);

    --text-color: var(--color-black);
    --accent-color: var(--color-red-original);

    --btn-more-color: var(--color-red-original);
    --btn-more-circle-color: var(--color-red-original);

    --transition-time: 0.45s;
}

[data-theme="mid-light"] {
    --bg-color: var(--color-bue-red);
    --text-color: var(--color-white);
    --accent-color: var(--color-red);

    --btn-more-color: var(--color-white);
    --btn-more-circle-color: var(--color-white);
}

[data-theme="dark"] {
    --bg-color: var(--bg-dark-color);
    --text-color: var(--color-white);
    --accent-color: var(--color-red);
    
    --btn-more-color: var(--color-gray);
    --btn-more-circle-color: var(--color-white);
}

[data-theme="dark"] .logo path.letter,
[data-theme="mid-light"] .logo path.letter {
    fill: var(--color-white);
}

[data-theme="mid-light"] .logo path.dot {
    fill: var(--color-red-original);
}

[data-theme="dark"] .logo path.dot {
    fill: var(--color-red-original);
}

section.hero {
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: all var(--transition-time) ease-in-out;
}

.logo path {
    transition: fill var(--transition-time) ease-in-out;
}

/* Theme switcher */
.theme-switcher {
    display: flex;
    gap: 10px;
}

.theme-btn {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    background-color: var(--color-white);
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    transition: transform 0.3s, background-image 0.3s ease;
}

.theme-btn:hover {
    transform: scale(1.1) rotate(10deg);
}   

/* Theme Icons */
.light-icon {
    -webkit-mask-image: url('data:image/svg+xml;base64,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');
    mask-image: url('data:image/svg+xml;base64,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');
}

.mid-light-icon {
    -webkit-mask-image: url('data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20fill%3D%22none%22%20viewBox%3D%220%200%2024%2024%22%20stroke-width%3D%221.5%22%20stroke%3D%22currentColor%22%20class%3D%22size-6%22%3E%3Cpath%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%20d%3D%22M4.098%2019.902a3.75%203.75%200%200%200%205.304%200l6.401-6.402M6.75%2021A3.75%203.75%200%200%201%203%2017.25V4.125C3%203.504%203.504%203%204.125%203h5.25c.621%200%201.125.504%201.125%201.125v4.072M6.75%2021a3.75%203.75%200%200%200%203.75-3.75V8.197M6.75%2021h13.125c.621%200%201.125-.504%201.125-1.125v-5.25c0-.621-.504-1.125-1.125-1.125h-4.072M10.5%208.197l2.88-2.88c.438-.439%201.15-.439%201.59%200l3.712%203.713c.44.44.44%201.152%200%201.59l-2.879%202.88M6.75%2017.25h.008v.008H6.75v-.008Z%22%20%2F%3E%3C%2Fsvg%3E');
    mask-image: url('data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20fill%3D%22none%22%20viewBox%3D%220%200%2024%2024%22%20stroke-width%3D%221.5%22%20stroke%3D%22currentColor%22%20class%3D%22size-6%22%3E%3Cpath%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%20d%3D%22M4.098%2019.902a3.75%203.75%200%200%200%205.304%200l6.401-6.402M6.75%2021A3.75%203.75%200%200%201%203%2017.25V4.125C3%203.504%203.504%203%204.125%203h5.25c.621%200%201.125.504%201.125%201.125v4.072M6.75%2021a3.75%203.75%200%200%200%203.75-3.75V8.197M6.75%2021h13.125c.621%200%201.125-.504%201.125-1.125v-5.25c0-.621-.504-1.125-1.125-1.125h-4.072M10.5%208.197l2.88-2.88c.438-.439%201.15-.439%201.59%200l3.712%203.713c.44.44.44%201.152%200%201.59l-2.879%202.88M6.75%2017.25h.008v.008H6.75v-.008Z%22%20%2F%3E%3C%2Fsvg%3E');
}

.dark-icon {
    -webkit-mask-image: url('data:image/svg+xml;base64,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');
    mask-image: url('data:image/svg+xml;base64,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');
}

header, footer {
    left: 0;
    z-index: 2;
    width: 100%;
    height: 90px;
    background-color: transparent;
    display: flex;
    flex-direction: row;
}

@media screen and (min-width: 680px) {
    header, footer {
        height: 110px;
    }
}

header {
    position: fixed;
    top: 0;
}

.logo {
    transition:
        margin 0.5s ease-in-out,
        height 0.5s ease-in-out,
        filter 0.5s ease-in-out;
}

header .logo {
    align-items: start;
    height: 30px;
}

@media screen and (min-width: 1024px) {
    header .logo {
        height: 50px;
    }
}

footer {
    position: absolute;
    bottom: 0;
    justify-content: right;
}

[data-theme="light"] footer * {
    color: var(--color-dark-grey);
    transition: color 0.5s ease-in-out;
}

@media screen and (min-width: 990px) {
    footer * {
       color: var(--color-white) !important;
    }
}

nav, section {
    max-width: 1980px;
    margin: 0 auto;
    overflow: hidden;
    padding: 0 20px;
    transition: padding 0.5s ease-in-out;
}

@media screen and (min-width: 720px) {
    nav, section {
        padding: 0 60px;
    }
}

@media screen and (min-width: 1330px) {
    nav, section {
        padding: 0 120px;
    }
}

nav {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;

    color: var(--color-white);
    font-family: Inter;
    line-height: 24px;
    letter-spacing: 0px;
    text-align: left;
}

header nav, footer nav {
    width: 100%;
}

header nav {
    font-size: 18px;
    font-weight: 500;
}

@media screen and (min-width: 640px) {
    header nav {
        font-weight: 600;
        font-size: 20px;
    }
}

footer nav {
    font-weight: 400;
}

ul {
    display: flex;
    gap: 25px;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    line-height: 1.25;
}

span.sm {
    filter: invert(1);
}
span.lg {
    display: none;
}
@media screen and (min-width: 420px) {
    ul {
        font-size: 16px;
        gap: 30px;
    } 
}

@media screen and (min-width: 600px) {
    span.sm {
        filter: none;
        display: none;
    }
    span.lg {
        display: inline;
    }
}

@media screen and (min-width: 990px) {
    ul {
        gap: 60px;
    } 
}

footer ul {
    width: 100%;
    font-size: 14px;
    justify-content: center;
    transition: justify-content 0.5s ease-in-out;
}

@media screen and (min-width: 990px) {
    footer ul {
        font-size: 18px;
        justify-content: right;
    }
}

li, a {
    display: flex;
    flex-direction: row;
    gap: 8px;
}

section {
    width: 100%;
    display: flex;
    flex-direction: column;
}

section.hero {
    /* background-color: var(--bg-color); */
    position: relative;
    height: 100dvh;
    max-height: 1080px;
    justify-content: center;
    align-items: end;
}

section.hero .background {
    z-index: 0;
    position: absolute;
    top: 0;
    right: 0;
    height: 100dvh;
    width: 42%;
}

.hero .logo {
    z-index: 1;
    margin-top: 60px;
    pointer-events: none;
    width: 58%;
    align-self: center;
    min-width: 270px !important;
}

@media screen and (min-width: 420px) {
    .hero .logo {
        align-self: start;
    }
}

@media screen and (min-width: 500px) {
    .hero .logo {
        margin-top: 0px;
        height: 60px;
    }
}

@media screen and (min-width: 636px) {
    .hero .logo {
        height: 70px;
    }
}

@media screen and (min-width: 812px) {
    .hero .logo {
        height: 80px;
    }
}

@media screen and (min-width: 1024px) {
    .hero .logo {
        height: 100px;
    }
}

@media screen and (min-width: 1300px) {
    .hero .logo {
        height: 120px;
    }
}

@media screen and (min-width: 1599px) {
    section.hero .background {
        width: 35.5%;
    }
}

.background svg {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: auto;
    min-width: 100%;
    max-height: 1080px;
    pointer-events: none;
}

/* Mailbox */
a.mailbox {
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    gap: 25px;
    margin-bottom: 120px;
    position: absolute;
    z-index: 0;
    color: var(--color-black);
    font-size: 18px;
    filter: drop-shadow(20px 40px 80px rgba(20, 20, 20, 0.12));
    transition: font-size 0.5s ease-in-out,
                height 0.5s ease-in-out,
                margin-bottom 0.5s ease-in-out,
                gap 0.5s ease-in-out;
}

.mailbox .text {
    display: none;
}

.mailbox img {
    height: 300px;
    transition: height 0.5s ease-in-out;
}

@media screen and (min-width: 500px) {
    a.mailbox {
        margin-bottom: 0px;
        color: var(--color-white);
    }
    .mailbox .text {
        display: block;
    }
    .mailbox img {
        height: 200px;
    }
}

@media screen and (min-width: 636px) {
    .mailbox img {
        height: 220px;
    }
}

@media screen and (min-width: 860px) {
    a.mailbox {
        gap: 40px;
        font-size: 20px;
        z-index: 0;
    }

    .mailbox img {
        height: 260px;
    }
}

@media screen and (min-width: 1024px) {
    .mailbox img {
        height: 320px;
    }
}

@media screen and (min-width: 1360px) {
    a.mailbox {
        font-size: 22px;
        gap: 60px;
    }
    .mailbox img {
        height: 380px;
    }
}

@media screen and (min-width: 1800px) {
    .mailbox img {
        height: 520px;
    }
}

/* More button */
.more {
    width: 40px;
    font-size: 20px;
    height: 60px;
    border: none;
    outline: none;
    background: rgba(250, 250, 250, 0.125);
    color: #fff;
    cursor: pointer;
    z-index: 3;
    position: absolute;

    left: calc(50% - 23px);
    bottom: 150px;
    border: 3px solid var(--btn-more-color);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: end;
    transition: all 0.5s ease-in-out;

    .bouncing-circle {
        width: 12px;
        height: 12px;
        background-color: var(--btn-more-circle-color);
        border-radius: 50%;
        position: absolute;
        bottom: 10px;
        left: 50%;
        transform: translateX(-50%);
        animation: bounce 1.5s ease-in-out infinite;
    }
}

.more:hover {
    background: rgba(250, 250, 250, 0.5);
    animation-play-state: paused;
}

.more:hover .bouncing-circle {
    animation-play-state: paused;
}

.more::before {
    position: absolute;
    content: "";
    width: calc(100%);
    height: calc(100%);
    left: 0px;
    top: 0px;
    background: linear-gradient(
      75deg,
      #ef4a30,
      #d44c4c,
      #e0c363,
      #9ace59,
      #56c168,
      #5aa9ce,
      #5047d5,
      #9e5bc3
    );
    background-size: 400%;
    z-index: -1;
    filter: blur(20px);
    animation: move 30s ease-in-out infinite;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    border-radius: 20px;
}
  
.more:hover::before {
    opacity: 1;
}

.more:after {
    opacity: 0;
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    -webkit-transition: all 0.5s ease-in-out;
    transition: all 0.5s ease-in-out;
}

.more:hover::after {
    opacity: 1;
    transition: all 0.5s ease-in-out;
    position: relative;
    top: -90px;
    padding: 20px 30px;
    white-space: pre;
    content: '';
    content: attr(data-title);
    white-space: pre;
    color: var(--color-dark-grey);
    font-size: 18px;
    font-weight: 200;
    line-height: 22px;
    letter-spacing: 0px;
    text-align: center;
    background-color: rgba(235, 235, 235, 0.6);
    display: flex;
    flex-direction: row;
    justify-content: flex-start;
    align-items: flex-start;
    border-radius: 20px;
    backdrop-filter: blur(4px);
}

@media screen and (min-width: 820px) {
    .more {
        width: 46px;
        height: 70px;
        border: 4px solid var(--btn-more-color);

        .bouncing-circle {
            width: 14px;
            height: 14px;
        }
    }
}

@media screen and (min-width: 990px) {
    .more {
        bottom: 60px;
    }
}

@media screen and (min-width: 1024px) {
    .more::after {
        font-size: 20px;
    }
}

/* Utilities */
.invert {
    filter: grayscale(1) contrast(2.5) drop-shadow(8px 5px 20px white);
}

.outline {
    outline: 2px solid var(--color-white);
}

/* Animation */
@keyframes bounce {
    0%, 100% {
      bottom: 10px;
      animation-timing-function: ease-in;
    }
    50% {
      bottom: 30px;
      animation-timing-function: ease-out;
    }
}

@media screen and (min-width: 820px) {
    @keyframes bounce {
        0%, 100% {
          bottom: 10px;
          animation-timing-function: ease-in;
        }
        50% {
          bottom: 40px;
          animation-timing-function: ease-out;
        }
    }
}

@keyframes move {
    0% {
      background-position: 0 0;
    }
    50% {
      background-position: 400% 0;
    }
    100% {
      background-position: 0 0;
    }
}