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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #1f1f1f;
    color: #f5f5f5;
    line-height: 1.6;
    transition: 0.3s;
}


/* HEADER */

header {
    height: 75px;

    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 0 7%;

    border-bottom: 1px solid #303030;
}

.logo {
    font-size: 18px;
    font-weight: bold;
}

nav {
    display: flex;
    gap: 30px;
}

nav a {
    color: #999;
    text-decoration: none;
    font-size: 14px;
}

nav a:hover {
    color: white;
}

#modeBtn {
    border: none;
    background: none;

    color: #ddd;
    font-size: 14px;

    cursor: pointer;
}


/* HERO */

.hero {
    min-height: 570px;

    padding: 90px 14%;

    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: 60px;

    background-image:
        linear-gradient(#292929 1px, transparent 1px),
        linear-gradient(90deg, #292929 1px, transparent 1px);

    background-size: 45px 45px;
}

.hero-text {
    max-width: 570px;
}

.small-text {
    color: #888;

    font-size: 12px;
    letter-spacing: 2px;

    margin-bottom: 15px;
}

h1 {
    font-size: clamp(42px, 6vw, 68px);

    line-height: 1.05;

    margin-bottom: 25px;
}

h1 span {
    color: white;
}

.intro {
    color: #aaa;

    font-size: 18px;

    max-width: 520px;
}


/* BUTTONS */

.buttons {
    margin-top: 30px;

    display: flex;
    gap: 12px;
}

.main-btn,
.second-btn {
    padding: 12px 18px;

    border-radius: 7px;

    text-decoration: none;

    font-size: 14px;
}

.main-btn {
    background: white;
    color: #111;
}

.second-btn {
    border: 1px solid #555;
    color: white;
}

.main-btn:hover {
    transform: translateY(-2px);
}

.second-btn:hover {
    background: #292929;
}


/* HERO SHAPE */

.hero-shape {
    width: 260px;
    height: 260px;

    position: relative;

    transform: rotate(30deg);
}

.hero-shape div {
    position: absolute;

    inset: 0;

    border: 2px solid #444;
}

.shape-two {
    transform: scale(0.72);
}

.shape-three {
    transform: scale(0.45);

    display: flex;
    align-items: center;
    justify-content: center;

    color: #aaa;

    font-size: 45px;
    font-weight: bold;
}


/* GENERAL SECTIONS */

.section {
    padding: 100px 10%;

    border-top: 1px solid #303030;
}

h2 {
    font-size: 42px;

    margin-bottom: 40px;
}


/* PROJECTS */

.projects {
    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: 20px;
}

.card {
    min-height: 260px;

    padding: 28px;

    border: 1px solid #383838;

    border-radius: 10px;

    background: #232323;

    transition: 0.2s;
}

.card:hover {
    transform: translateY(-5px);

    border-color: #666;
}

.number {
    color: #777;

    margin-bottom: 30px;
}

.card h3 {
    font-size: 25px;

    margin-bottom: 10px;
}

.card p {
    color: #aaa;
}

.tags {
    margin-top: 25px;

    font-size: 12px;
}


/* ABOUT */

.about {
    display: grid;

    grid-template-columns: 1fr 1fr;

    gap: 70px;
}

.about-text {
    color: #aaa;

    max-width: 550px;
}

.about-text p + p {
    margin-top: 20px;
}


/* FACTS */

.facts {
    margin-top: 35px;

    display: flex;

    gap: 35px;
}

.facts div {
    display: flex;

    flex-direction: column;
}

.facts b {
    color: white;

    font-size: 20px;
}

.facts span {
    font-size: 13px;
}


/* FOOTER */

footer {
    padding: 30px 10%;

    display: flex;
    justify-content: space-between;

    border-top: 1px solid #303030;

    color: #777;

    font-size: 13px;
}

footer a {
    color: #777;

    text-decoration: none;
}

footer a:hover {
    color: white;
}


/* LIGHT MODE */

body.light {
    background: #f4f4f4;
    color: #222;
}

body.light header,
body.light .section,
body.light footer {
    border-color: #ddd;
}

body.light nav a,
body.light footer a,
body.light #modeBtn,
body.light .intro,
body.light .card p,
body.light .about-text {
    color: #666;
}

body.light .card {
    background: white;

    border-color: #ddd;
}

body.light .second-btn {
    color: #222;

    border-color: #bbb;
}

body.light .hero {
    background-image:
        linear-gradient(#ddd 1px, transparent 1px),
        linear-gradient(90deg, #ddd 1px, transparent 1px);
}

body.light .hero-shape div {
    border-color: #bbb;
}


/* MOBILE */

@media (max-width: 800px) {

    header {
        padding: 0 5%;
    }

    nav {
        display: none;
    }

    .hero {
        padding: 70px 8%;

        flex-direction: column;

        align-items: flex-start;
    }

    .hero-shape {
        width: 180px;
        height: 180px;

        align-self: center;
    }

    .projects,
    .about {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 70px 8%;
    }

    footer {
        padding: 25px 8%;
    }

}