@import url("https://fonts.googleapis.com/css2?family=Arimo:ital,wght@0,400..700;1,400..700&display=swap");

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;

    --color-bg-primary: #ffffff;
    --color-bg-primary-decal: #cacaca;
    --color-bg-secondary: #393e46;

    --color-font-primary: #3f3f3f;
    --color-font-secondary: #00adb5;
}

body {
    font-family: "Arimo", sans-serif;
    background-color: var(--color-bg-primary);
    line-height: 1.5;
    color: var(--color-font-primary);
}

h1,
h2,
h3,
h4 {
    font-variant-caps: small-caps;
}

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

/* Header part */

header {
    background-color: var(--color-bg-primary);
    position: fixed;
    width: 100%;
    top: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
    padding: 0 1vw;
}

.logo {
    display: flex;
    align-items: center;
    flex-direction: column;
    margin-bottom: 1vh;
}

.company-subname {
    display: inline-block;
    border-bottom: 2px solid var(--color-font-primary);
    padding: 0 0.5vw;
}

header nav {
    display: flex;
    gap: 1rem;
}

header nav a {
    display: inline-block;
    transition: all 0.5s;
    padding: 10px 15px;
    border-radius: 5px;
    text-decoration: none;
}

header nav a:hover {
    background-color: var(--color-font-primary);
    color: var(--color-bg-primary);
    transform: scale3d(1.1, 1.1, 1.1);
    text-decoration: none;
}

@media screen and (max-width: 1150px) {
    header nav {
        display: none;
    }

    header {
        flex-direction: column;
        gap: 1vh;
    }

    .burger-menu {
        display: block;
        position: absolute;
        top: 25px;
        right: 10px;
        cursor: pointer;
    }
    .burger-menu span {
        display: block;
        width: 30px;
        height: 3px;
        background-color: yellowgreen;
        margin: 5px;
    }

    header nav.active {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        position: absolute;
        top: 60px;
        right: 0;
        background-color: var(--color-bg-primary);
        box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
        padding: 1vh 1vw;
    }

    header nav.active a {
        display: block;
        text-align: center;
    }

    header.top-hidden {
        display: block !important;
    }
}

@media screen and (max-width: 1450px) {

    header {
        flex-direction: column;
        gap: 1vh;
        padding: 1vh 1vw;
        transition: all 0.5s;
    }

    header.top-hidden {
        top: -90px;
    }
}

/* Main part */

main {
    margin-top: 150px;
}

section {
    padding: 2vh 0;
}

section h2 {
    font-size: 3rem;
    margin-bottom: 1vh;
}

section.intro {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

section.intro p {
    padding: 0 20vw;
    text-align: justify;
}

section.qsn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

section.qsn article {
    padding: 1vh 20vw;
    text-align: justify;
}

section h3 {
    font-size: 2rem;
    margin-bottom: 1vh;
    text-align: center;
}

section.qsn article.competences .container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 3vh 3vw;
}

section.qsn article.competences .container .comp-item {
    background-color: var(--color-bg-secondary);
    color: var(--color-bg-primary);
    text-align: left;
    padding: 1vh 1vw;
    border-radius: 5px;
}

section.ent-dev {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

section.ent-dev .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    flex-wrap: wrap;
    gap: 3vh 3vw;
}

.ent-dev-item {
    padding: 1vh 1vw;
    color: var(--color-bg-primary);
    text-align: justify;
    border-radius: 5px;
    max-width: 600px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
}

.ent-dev-item h4 {
    font-size: 1.5rem;
    margin-bottom: 1vh;
    text-align: left;
}

.ent-dev-item ul {
    margin-left: 20px;
}

.ent-dev-item-1 {
    background: linear-gradient(#000000b3, #000000ff),
        url(/images/brainstorming-1.jpg) center/cover no-repeat;
    padding-top: 50px;
    padding-bottom: 50px;
}

.ent-dev-item-2 {
    background: linear-gradient(#000000b3, #000000ff),
        url(/images/brainstorming-2.jpg) center/cover no-repeat;
    padding-top: 50px;
    padding-bottom: 50px;
    padding-right: 250px;
}

section.ent-dev > p {
    padding: 0 20vw;
    text-align: justify;
}

section.dd {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

section.dd p {
    padding: 0 20vw;
    text-align: justify;
}

section.dd ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 3vh 3vw;
    list-style: none;
}

section.dd ul li {
    background-color: var(--color-bg-secondary);
    color: var(--color-bg-primary);
    width: 300px;
    text-align: left;
    padding: 15px;
    border-radius: 5px;
    margin: auto;
}

section.dl {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

section.dl article {
    padding: 1vh 20vw;
    text-align: justify;
}

section.dl article h3 {
    font-size: 2rem;
    margin-bottom: 1vh;
    text-align: left;
}

section.dl article h4 {
    font-size: 1.5rem;
    margin-bottom: 1vh;
    text-align: left;
}

section.dl article ul {
    margin-left: 50px;
}

section.rh {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-bottom: 4vh;
}

section.rh p,
section.rh ul {
    padding: 0 20vw;
    text-align: justify;
}

section.rh ul {
    margin-left: 50px;
}

section.contact {
    background-color: var(--color-bg-primary-decal);
    margin: auto;
    width: fit-content;
    padding: 4vh 5vw;
    text-align: center;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
    margin-bottom: 2vh;
}

section.contact form {
    display: flex;
    flex-direction: column;
    gap: 3vh;
}

div.contact-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1vh;
}

section.contact form input,
section.contact form textarea {
    font-family: "Arimo", sans-serif;
    padding: 10px;
    border: 1px solid white;
    outline: none;
}

section.contact form button {
    padding: 10px;
    border: 1px solid white;
    background-color: var(--color-bg-secondary);
    color: var(--color-bg-primary);
    border: none;
    cursor: pointer;
    outline: none;
}

footer {
    font-size: 0.9rem;
    background-color: var(--color-bg-primary);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
}

footer h3 {
    font-variant-caps: all-small-caps;
}

@media screen and (max-width: 500px) {
    section h2 {
        font-size: 3rem;
        margin-bottom: 1vh;
        text-align: center;
    }

    section h3 {
        font-size: 1.5rem;
        margin-bottom: 1vh;
    }
}

@media screen and (max-width: 1000px) {
    section.intro p {
        padding: 0 5vw;
    }

    section.qsn article {
        padding: 1vh 5vw;
    }

    section.ent-dev {
        padding: 5vw;
    }

    .ent-dev-item {
        padding: 1vh 4vw;
    }

    section.ent-dev > p {
        padding: 0 5vw;
    }

    section.dd p {
        padding: 0 5vw;
    }

    section.dl article {
        padding: 1vh 5vw;
    }

    section.rh p,
    section.rh ul {
        padding: 0 5vw;
    }
}