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

html {
    scroll-behavior: smooth;
}

body {
    --orange: #f7941e;
    --dark-gray: #505050;
    --dark-blue: #313c5e;
    --light-gray: #bbbbc0;
    --body-bg-color: #f3f3f3;
    --current-page-language-font-color: #d5d7de;
    --header-font-size-scaling: 0.8;
    --articles-panel-height: calc((3 + 1) * 1.125rem * 1.5);
    --h1-font-size: 5.375rem;
    --h2-font-size: 4.625rem;
    --h3-font-size: 2.375rem;
    --h4-font-size: 3.75rem;
    --h5-font-size: 3.125rem;
    --h6-font-size: .75rem;
    color: var(--dark-gray);
    margin: 0 auto;
    font: 1rem/1.5 Mulish, sans-serif;
    border: 1px solid #bbbbc0;
    overflow-x: hidden;
    background-color: var(--body-bg-color)
}

h1 {
    color: var(--orange);
    font-size: calc(var(--h1-font-size) * var(--header-font-size-scaling));
    margin: 0 auto;
}

h2 {
    margin-bottom: 2rem;
    font-size: calc(var(--h2-font-size) * var(--header-font-size-scaling));
    color: var(--dark-blue);
    text-align: center;
    grid-column: 1/-1;
}

h3 {
    font-size: calc(var(--h3-font-size) * var(--header-font-size-scaling));
    line-height: 2.625rem;
    margin: 3rem 0 1rem;
    color: var(--dark-blue);
}

h4 {
    color: #f3f3f3;
    margin: 0 0 3.2rem;
    font-size: calc(var(--h4-font-size) * var(--header-font-size-scaling));
}

h5 {
    color: var(--dark-blue);
    margin: .25rem 3%;
    letter-spacing: -0.01em;
    font-size: calc(var(--h5-font-size) * var(--header-font-size-scaling));
}

h6 {
    font-size: 1rem;
    margin: 1rem auto;
}

h1,
h2,
h3,
h4,
h5 {
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: -0.75px;
    font-family: "Roboto Slab", sans-serif;
}

p {
    margin-bottom: 2rem;
}

    p.recap {
        font-size: 1.25rem;
        max-width: 812px;
        text-align: center;
        grid-column: 1/-1;
        margin: 0 auto 4rem;
    }


section {
    padding: 9rem calc((100% - 1920px) / 2 + 278px);
}

    section > *:last-child {
        margin-bottom: 0;
    }

    section article {
        background: #fff;
        border-radius: 0.5rem;
        padding-bottom: 2rem;
    }

        section article > *:not(:first-child) {
            padding-left: 4.66%;
            padding-right: 4.66%;
        }

        section article img {
            width: 100%;
        }

        section article p,
        section article p.recap {
            margin: 1rem 0;
            text-align: left;
        }

.button {
    color: white;
    background: var(--orange);
    text-transform: uppercase;
    border: 1px solid var(--orange);
    border-radius: .25rem;
    font-weight: 800;
    padding: .25rem .5rem;
    display: inline-block;
    text-align: center;
    height: 2.625rem;
    font-size: 1.25rem;
}

    .button:hover {
        border: 1px solid white;
    }

/* HAMBURGER MENU (MOBILE) */

#hamburger-menu {
    width: 2rem;
    height: 1.5rem;
    top: 7.25rem;
    right: 2rem;
    z-index: 4;
    position: fixed;
    display: none;
    appearance: none;
    cursor: pointer;
    background: linear-gradient(to bottom, transparent, transparent calc(50% - 1px), var(--orange) calc(50% - 1px), var(--orange) calc(50% + 1px), transparent calc(50% + 1px));
}

    #hamburger-menu::before,
    #hamburger-menu::after {
        content: "";
        display: block;
        border-radius: 0.25rem;
        background: var(--orange);
        height: .125rem;
        transform-origin: 0 50%;
        transition: transform 0.4s;
    }

    #hamburger-menu::after {
        margin-top: auto;
    }

    /* Hamburger menu activated */


    #hamburger-menu:checked::before {
        transform: rotate(45deg);
    }

    #hamburger-menu:checked::after {
        transform: rotate(-45deg);
    }


    #hamburger-menu:checked {
        background: transparent;
    }

/* Logo and header */

header {
    height: 73px;
    padding: 0.25em 0.5em;
    align-items: center;
    justify-content: space-around;
    background: #fff;
    width: 100%;
    z-index: 4;
    position: relative;
    display: none;
}

.rating-stars {
    color: gold;
    font-size: 0.75rem;
    display: inline-block;
    position: relative;
}

    .rating-stars::after {
        content: "";
        position: absolute;
        top: 0;
        right: 0;
        height: 100%;
        width: 10%;
        background: #fff;
    }

a {
    color: var(--orange);
    text-decoration: none;
}

header a {
    justify-self: end;
}

.header-subtext {
    font-size: 9px;
    color: #84848a;
}

header ul {
    list-style: none;
    font-size: 11px;
}

/* MOBILE APP DOWNLOAD SPLASH */

section#mobile-app-splash {
    position: relative;
    padding-top: 0;
    padding-bottom: 2rem;
    z-index: 3;
    overflow-x: clip;
}

/* Top navigation & links */

#mobile-app-splash nav {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    flex-wrap: wrap-reverse;
}


nav a {
    color: var(--orange);
    text-transform: uppercase;
    font-size: 1.25rem;
    padding: .25rem .5rem;
    margin-top: 0.5rem;
}

    nav a:hover {
        color: #fff;
    }

    nav a:first-of-type {
        margin-right: auto;
    }

nav #right-links {
    margin-left: 2rem;
}

    nav #right-links a {
        width: 150px;
    }

        nav #right-links a:not(:last-of-type) {
            margin-right: .5rem;
        }

        nav #right-links a:first-of-type {
            background: transparent;
            color: var(--orange);
        }

        nav #right-links a:hover {
            color: white;
            border-color: white;
        }

/* language selection bar */

#lang-input {
    display: none;
}

nav a img {
    width: 150px;
}

.blue-arrow::after {
    content: "";
    display: inline-block;
    margin: 0 1rem 0.1875rem 0.75rem;
    height: 0.4rem;
    width: 0.4rem;
    transform: rotate(45deg);
    border: solid var(--dark-blue);
    border-width: 0 1px 1px 0;
    flex-grow: 0;
    flex-shrink: 0;
    transition: transform 0.25s;
}

#lang {
    display: grid;
    grid-template-columns: 1fr max-content 1fr;
    justify-content: center;
    cursor: pointer;
    height: 1.875rem;
    width: 150px;
    color: var(--dark-blue);
    font-size: .75rem;
    text-transform: uppercase;
    border-radius: 0 0 .5rem .5rem;
    overflow: hidden;
    margin: 0 0 2.125rem calc(100% - 150px);
    position: relative;
    z-index: 1;
}

    #lang::before, #lang::after {
        content: "";
        background: white;
        width: 100%;
    }

    #lang::before {
        border-radius: 0 0 0 .5rem;
    }

    #lang::after {
        border-radius: 0 0 .5rem 0;
    }

    #lang ul {
        list-style: none;
    }

    #lang:hover li {
        margin-top: 0;
    }

    #lang:hover {
        overflow: visible;
    }

        #lang:hover .blue-arrow::after {
            border-width: 1px 0 0 1px;
            margin-bottom: 0;
            margin-top: 0.1875rem;
        }

    #lang li:first-of-type label {
        height: 100%;
        z-index: 1;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    #lang li {
        height: 1.875rem;
        background: white;
        position: relative;
    }

    #lang img {
        width: 1rem;
        height: 1rem;
        margin-right: .5rem;
    }

    #lang a {
        width: 100%;
        margin: 0;
        display: block;
        height: 1.5rem;
        font-size: .75rem;
        color: #313c5e;
    }

/* Main header panel with mobile app download QR code and links */

#mobile-app-hero {
    display: grid;
    grid-template-columns: repeat(20, 1fr);
    align-items: center;
    margin-top: 4rem;
    row-gap: 2rem;
}

#mobile-logo {
    display: none;
}

#mobile-app-hero h1 {
    align-self: flex-end;
    margin-left: 0;
    grid-column: 1/10;
    grid-row: 1;
}

#mobile-app-hero p {
    grid-column: 1/10;
    align-self: flex-start;
    text-align: left;
    grid-row: 2;
    margin-bottom: 0;
}

#mobile-app-hero > img {
    grid-row: 1/3;
    grid-column: 10/16;
    height: 22rem;
    justify-self: center;
}

#mobile-app-hero aside {
    grid-row: 1/3;
    grid-column: 16/21;
    text-align: center;
}


.android-badge,
.apple-badge {
    width: 150px;
    vertical-align: middle;
}

#mobile-app-splash > a {
    display: none;
}

/* soft rounded navy color border extenting from dark blue colored panel above */
#mobile-app-splash::after {
    content: "";
    display: block;
    width: 453.5%;
    padding-top: 453.5%;
    height: 0;
    border-radius: 50%;
    margin: -445.497% 0 0 -200.735%;
    background-color: #313c5e;
    position: absolute;
    z-index: -1;
    top: 100%;
}

/* orange rounded border overlappng the dark blue one */
#mobile-app-splash::before {
    content: "";
    display: block;
    width: 453.5%;
    padding-top: 453.5%;
    border-radius: 50%;
    margin: -444.25% 0 0 -187.4%;
    background-color: var(--orange);
    position: absolute;
    z-index: -1;
    top: 100%;
}



/* SEARCH PANEL */

#search {
    padding: 4% calc(11.5% - 24px) 5.6rem;
    position: relative;
    background: url('../images/tram-bg.webp') no-repeat 0 0/cover;
    backdrop-filter: blur(15px);
    max-width: 1518px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    z-index: 3;
    border-radius: .25rem;
    box-shadow: 0 0 .5rem #333;
}

    #search label {
        display: block;
        font-weight: bold;
        margin: 2rem auto;
    }

    #search > div {
        max-width: 536px;
        width: 100%;
        position: relative;
        margin: 0 auto;
    }

    #search input, .autocomplete {
        width: 100%;
    }

    #search input {
        height: 3rem;
        display: block;
        margin: 0.5rem auto 0;
        border-radius: 1.5rem;
        font: 1.125rem/3rem Mulish, sans-serif;
        padding: 0 1rem 0 3rem;
        border: 1px solid #fff;
        outline: 0;
        text-align: left;
        background: white url('../images/search-icon.png') no-repeat 1rem center;
        position: relative;
        z-index: 2;
    }

        #search input::placeholder {
            color: #C5C5C5;
        }

        #search input:focus::placeholder {
            color: transparent;
        }

        #search input:not(:focus) + .autocomplete {
            animation-name: hide;
            animation-duration: .2s;
            animation-fill-mode: forwards;
        }

.autocomplete {
    max-height: max-content;
    transition: opacity 1s;
    background: #fff;
    min-height: 3rem;
    margin: -3rem auto 0;
    border-radius: 1.5rem;
    position: absolute;
    z-index: 1;
    padding: 2rem 0 0.5rem;
    color: #505050;
    overflow: hidden;
    text-align: left;
    left: 50%;
    transform: translateX(-50%);
}

    .autocomplete p {
        cursor: pointer;
        margin: 0;
        padding: 0 0 0 3rem;
        font: 1.125rem/3rem Mulish, sans-serif;
    }

        .autocomplete p > a {
            display: block;
            height: 100%;
        }

        .autocomplete p:first-of-type {
            margin-top: 2rem;
        }

div.autocomplete p:hover {
    background-color: #f3f3f3;
}

@keyframes hide {
    0% {
        max-height: max-content;
    }

    99% {
        max-height: max-content;
    }

    100% {
        max-height: 3rem;
    }
}


/* Latest news panel */

#latest-news {
    background-color: var(--orange);
    padding-top: 1rem;
    padding-bottom: 1rem;
    text-align: left;
}

    #latest-news h4 {
        color: #fff;
    }

    #latest-news a {
        color: #fff;
        text-decoration: underline;
        margin: 0.5rem 0;
    }

    #latest-news span {
        text-transform: uppercase;
        font-size: 0.625rem;
    }

/* How to panel */

.two-cols {
    display: grid;
    grid-template-columns: repeat(2, calc(50% - .5rem));
    justify-content: center;
    gap: 1rem;
}


#how-to div img,
#about-us img {
    width: 100%;
}

.light-panel {
    background-color: #f3f3f3;
}

    .light-panel h4 {
        color: var(--dark-blue)
    }

.light-gray-panel {
    background-color: rgba(49, 60, 94, 0.1);
}

.dark-panel {
    color: #fff;
}

ol.number {
    list-style: none;
    counter-reset: instructions;
    color: #313c5e;
    font: bold calc(var(--h3-font-size) * var(--header-font-size-scaling))/2.625rem "Roboto Slab", sans-serif;
    text-transform: uppercase;
}

    ol.number li {
        margin-bottom: 1rem;
        display: flex;
        align-items: center;
    }

        ol.number li::before {
            counter-increment: instructions;
            content: counter(instructions);
            width: 5rem;
            height: 5rem;
            border-radius: 50%;
            background: #313c5e;
            color: #fff;
            font: bold 3.125rem/5rem "Roboto Slab", sans-serif;
            text-align: center;
            margin-right: 1rem;
            flex-shrink: 0;
        }

        ol.number li strong {
            display: inline-block;
            vertical-align: middle;
        }

/* articles section */

#articles article {
    max-width: 750px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    position: relative;
}

input.read-more {
    cursor: pointer;
    appearance: none;
    color: var(--orange);
    text-decoration: underline;
    text-transform: uppercase;
    font: bold .875rem/1.5 "Mulish", sans-serif;
    text-align: right;
    position: absolute;
    bottom: 2rem;
    background-color: white;
    width: 100%;
    z-index: 1;
}

.read-more + div {
    max-height: max-content;
    overflow: hidden;
    transition: max-height 1s;
    display: flex;
    flex-direction: column;
    height: 100%;
    color: var(--dark-blue);
}

    .read-more + div::after {
        content: "";
        background-color: white;
        margin-top: auto;
        position: relative;
        z-index: 2;
        display: block;
        height: 1.6875rem;
    }

.read-more:not(:checked) {
    color: var(--dark-blue);
    z-index: 3;
}

.read-more:checked {
    animation: return 1s forwards;
}

    .read-more:checked + div {
        max-height: var(--articles-panel-height) !important;
        min-height: var(--articles-panel-height);
    }

.read-more::before {
    content: "zamknij";
}

.read-more-ukr::before {
    content: "закрити";
}

.read-more:checked::before {
    content: "więcej..";
}

.read-more-ukr:checked::before {
    content: "читати далі.."
}

.read-more::after {
    content: "";
    display: inline-block;
    margin: 0 1rem 0.1875rem 0.75rem;
    height: 0.45rem;
    width: 0.45rem;
    transform: rotate(45deg);
    border: solid var(--orange);
    border-width: 0 2px 2px 0;
    transition: 0.5s transform;
}

.read-more:not(:checked)::after {
    border-color: var(--dark-blue);
    transform: rotate(-135deg);
}

@keyframes return {
    0% {
        z-index: 3
    }

    99% {
        z-index: 3
    }

    100% {
        z-index: 1
    }
}

/* FAQ */

#faq > article {
    padding: 4rem 3%;
    margin-bottom: 2rem;
}

#faq > p {
    padding-left: 3%;
}

dl input[type='checkbox'] {
    display: none;
}

dt > label {
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

dt {
    color: var(--dark-blue);
    font: bold 1.125rem/1.5 Mulish, sans-serif;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(49, 60, 94, 0.1);
}

    dt:first-of-type {
        padding-top: 0;
        margin-top: 0;
        border-top: 0px none;
    }

    dt > label::after {
        content: "";
        display: inline-block;
        margin: 0 1rem 0.1875rem 0.75rem;
        height: 0.5rem;
        width: 0.5rem;
        transform: rotate(45deg);
        border: solid var(--dark-blue);
        border-width: 0 2px 2px 0;
        flex-grow: 0;
        flex-shrink: 0;
        transition: transform 0.25s;
    }

input:checked + dt + dd {
    max-height: 30rem;
}

input:checked + dt > label::after {
    transform: rotate(225deg);
}

dd {
    max-height: 0;
    overflow: hidden;
    transition: max-height .5s;
    padding-left: 3%;
}

    dd::before {
        content: "";
        display: block;
        height: 1rem;
    }

#faq p:last-of-type {
    width: min(751px, 100%);
}

/* About us section - main styles are shared in How to section */

#about-us p:not(.recap) {
    align-self: flex-start;
    font-size: 1rem;
}

/* Our Partners section */

.gallery {
    margin-top: 3rem;
    display: grid;
    grid-template-rows: auto auto;
    grid-auto-flow: column;
    overflow: hidden;
    width: 100%;
    scroll-behavior: smooth;
    column-gap: 2rem;
    justify-items: center;
    font-size: 0.625rem;
    position: relative;
}

    .gallery p {
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        top: 0;
        left: 0;
        position: sticky;
        width: 3rem;
        height: 100%;
        color: var(--orange);
        background: #f3f3f3;
    }

        .gallery p:hover::after {
            opacity: 0.6;
        }

        .gallery p::after {
            content: "";
            height: 0.5rem;
            width: 0.5rem;
            transform: rotate(135deg);
            border: solid var(--orange);
            border-width: 0 2px 2px 0;
            flex-grow: 0;
            flex-shrink: 0;
        }

        .gallery p::before {
            content: "";
            position: absolute;
            width: 100%;
            height: calc(100% + 2rem);
            background: var(--body-bg-color);
        }

        .gallery p:last-of-type {
            right: 0;
        }

            .gallery p:last-of-type::after {
                transform: rotate(-45deg);
            }

        .gallery p + img {
            grid-row: 1;
        }

/* Footer */

footer {
    background-color: var(--dark-blue);
    color: #fff;
    display: grid;
    justify-content: space-between;
    grid-template-columns: repeat(auto-fit, minmax(200px, max-content));
    row-gap: 5rem;
    column-gap: 1rem;
    padding: 5rem calc(10.6796% - 4.0485px);
}

    footer ul {
        list-style: none;
    }

    footer li a {
        color: #fff;
        display: block;
        text-decoration: none;
        font-weight: bold;
        padding: .75rem 0;
    }

    footer p {
        margin: 0;
        white-space: pre-line;
    }

/* Media queries */
@media screen and (max-width: 1920px) {
    section {
        padding: 6rem calc(10.6796% - 4.0485px);
    }

        section#mobile-app-splash {
            padding-left: calc(15.6634% - 22.73px);
            padding-right: calc(15.6634% - 22.73px);
        }
}

@media screen and (max-width: 1518px) {
    nav a {
        font-size: 1rem;
    }

        nav a img {
            width: 120px;
        }

    nav #right-links a {
        height: 80%;
        width: 120px;
    }

    #search {
        z-index: 1;
        padding-top: calc(4rem + 10vw)
    }

    h4 {
        margin-bottom: 2rem;
    }

    #mobile-app-hero > img {
        height: 20rem;
        justify-self: end;
    }

    .mobile-qr-download {
        width: 6rem;
    }
}

@media screen and (max-width: 1440px) {

    body {
        --h1-font-size: 4rem;
        --h2-font-size: 3.375rem;
        --h3-font-size: 1.75rem;
        --h4-font-size: 2.8125rem;
        --h5-font-size: 2.3125rem;
        --h6-font-size: .75rem;
    }

    #mobile-app-hero p {
        font-size: 1rem;
        padding-right: 1rem;
    }
}


@media screen and (max-width: 1150px) {
    nav #right-links {
        margin-left: auto;
    }

    #articles article:last-of-type:not(:nth-of-type(even)) {
        max-width: 750px;
    }

    #mobile-app-splash nav {
        align-items: center;
    }

    nav #right-links a {
        display: block;
    }

        nav #right-links a:not(:last-of-type) {
            margin-right: 0;
        }
}

@media screen and (max-width:950px) {
    section#mobile-app-splash, section {
        padding-top: 2rem;
        padding-bottom: 3rem;
    }

    #articles article, #faq article {
        width: calc(100% + 2rem);
        margin-left: -1rem;
    }

    .two-cols {
        grid-template-columns: 100%;
    }

    h2, h3 {
        font-size: 2rem;
    }

    h4 {
        font-size: 1.625rem;
    }

    h3 {
        margin: 1rem auto;
    }

    h5 {
        font-size: 1rem;
        margin: 2rem 0 1rem 3%;
    }

    p {
        font-size: .875rem;
    }

        p.recap {
            margin: 0 auto 2rem;
        }

    ol.number {
        font-size: 1rem;
        line-height: 1.125rem;
    }

        ol.number > li::before {
            height: 2.75rem;
            width: 2.75rem;
            font-size: 1.625rem;
            line-height: 2.75rem;
        }

    #lang {
        height: 3rem;
        width: 100%;
        margin: 1rem 0 0;
        grid-template-columns: 0 1fr 0;
    }

        #lang:hover {
            height: auto;
        }

        #lang ul {
            width: 100%;
            padding-bottom: 1rem;
            background: #fff;
        }

            #lang ul li:first-of-type {
                height: 3rem;
            }

        #lang a {
            display: block;
            font-size: 1rem;
        }

    @media (hover:none) {
        #lang-input:checked + #lang {
            height: auto;
        }

        #lang-input:not(:checked) + #lang {
            height: 3rem;
        }
    }

    nav {
        box-shadow: 0 .125rem .5rem #aaa
    }

        nav > img {
            margin: 30px auto 20px;
        }

    header {
        display: flex;
    }

    #mobile-app-hero {
        grid-template-columns: 100%;
        margin-top: 0;
        gap: 0;
    }

        #mobile-app-hero p {
            grid-row: 3;
            padding-right: 0;
        }

        #mobile-app-hero #mobile-logo {
            display: block;
            margin: 0 auto 2rem;
            width: 110px;
            height: 2.375rem;
            grid-column: 1;
            grid-row: 1;
        }

        #mobile-app-hero h1 {
            width: 100%;
            white-space: nowrap;
            font-size: 2.375rem;
            margin-bottom: 1rem;
            grid-row: 2;
        }


        #mobile-app-hero aside,
        #mobile-app-hero > img {
            display: none;
        }

    #mobile-app-splash > a {
        display: block;
        max-width: 25rem;
        margin: 1rem auto 0;
    }

    #hamburger-menu {
        display: flex;
        flex-direction: column;
    }

        #hamburger-menu:checked + nav {
            margin-left: 0;
        }


    #mobile-app-splash nav {
        flex-direction: column;
        text-align: center;
        position: fixed;
        width: 100vw;
        left: 0;
        top: 0;
        z-index: 3;
        padding-bottom: 0rem;
        background-color: rgba(49, 60, 94, 0.95);
        opacity: 0.95;
        border-radius: 0 0 1rem 1rem;
        border: 1px solid #000;
        transition: margin .25s ease-in;
        margin-top: 0;
        margin-left: 100%;
        overflow: hidden;
    }

    nav a,
    #right-links,
    nav #right-links a {
        width: 100%;
        border: 0px none;
        font-size: 1rem;
    }

        nav a:first-of-type {
            margin-bottom: 1.5rem;
        }

        nav #right-links a:last-of-type {
            color: var(--orange);
            background: transparent;
        }

        nav #right-links a:hover {
            color: white;
            background: transparent;
        }
}

@media screen and (max-width:760px) {
    p.recap {
        text-align: left;
    }
}

@media screen and (max-width:520px) {
    footer {
        justify-content: space-around;
    }
}

@media (hover:none) {

    #lang-input:checked + #lang {
        overflow: visible;
    }

    #lang-input + #lang {
        overflow: hidden;
    }

    #lang-input:checked + #lang .blue-arrow::after {
        border-width: 1px 0 0 1px;
        margin-bottom: 0;
        margin-top: 0.1875rem;
    }

    #lang-input:not(:checked) + #lang .blue-arrow::after {
        border-width: 0px 1px 1px 0px;
        margin-top: 0;
        margin-bottom: 0.1875rem;
    }
}