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

html {
    scroll-behavior: smooth;
}

body {
    font-family:
        Inter,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    background: #f7f7f5;
    color: #151515;
    line-height: 1.5;
}

.container {
    width: min(1120px, calc(100% - 48px));
    margin: 0 auto;
}


/* =========================================================
   HEADER
   ========================================================= */

.header {
    padding: 28px 0;
}

.nav {
    display: flex;
    align-items: center;
}

.logo,
.footer-logo {
    color: #151515;
    font-size: 20px;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo span,
.footer-logo span {
    color: #777;
    font-weight: 400;
}

nav {
    display: flex;
    gap: 32px;
    margin-left: auto;
}

nav a {
    color: #555;
    text-decoration: none;
    font-size: 14px;
}

nav a:hover {
    color: #111;
}


/* =========================================================
   LANGUAGE SWITCHER
   ========================================================= */

.languages {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 32px;
}

.languages button {
    border: none;
    background: transparent;

    color: #999;

    font-family: inherit;
    font-size: 12px;
    font-weight: 600;

    padding: 6px 4px;

    cursor: pointer;
}

.languages button:hover {
    color: #151515;
}

.languages button.active {
    color: #151515;
}


/* =========================================================
   BUTTONS
   ========================================================= */

.button {
    display: inline-block;

    background: #151515;
    color: #fff;

    padding: 15px 24px;
    border-radius: 8px;

    text-decoration: none;
    font-weight: 500;

    transition:
        opacity 0.2s ease,
        transform 0.2s ease;
}

.button:hover {
    opacity: 0.85;
}

.secondary-button {
    display: inline-block;

    padding: 15px 24px;

    color: #151515;
    text-decoration: none;
    font-weight: 500;
}

.secondary-button:hover {
    opacity: 0.6;
}


/* =========================================================
   HOME HERO
   ========================================================= */

.hero {
    min-height: 650px;

    display: flex;
    align-items: center;
}

.hero-content {
    padding: 80px 0 140px;
}

.eyebrow {
    margin-bottom: 28px;

    color: #777;

    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
}

.hero h1 {
    max-width: 1000px;

    font-size: clamp(64px, 9vw, 110px);
    line-height: 0.95;
    letter-spacing: -6px;
}

.hero p {
    margin-top: 40px;
    max-width: 560px;

    color: #656565;

    font-size: 20px;
}

.hero .button {
    margin-top: 36px;
}


/* =========================================================
   COMMON SECTIONS
   ========================================================= */

.products,
.about {
    padding: 120px 0;
}

.section-heading {
    display: flex;
    align-items: baseline;
    gap: 18px;

    margin-bottom: 60px;
}

.section-heading span {
    color: #888;
    font-size: 12px;
}

.section-heading h2 {
    font-size: 18px;
    font-weight: 500;
}


/* =========================================================
   PRODUCTS
   ========================================================= */

.products {
    background: #111;
    color: #fff;
}

.product-card {
    min-height: 440px;

    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 80px;

    padding: 64px;

    background: #1c1c1c;
    border-radius: 20px;
}

.product-status {
    display: inline-block;

    margin-bottom: 30px;
    padding: 5px 10px;

    border: 1px solid #444;
    border-radius: 100px;

    color: #aaa;

    font-size: 10px;
    letter-spacing: 1px;
}

.product-info h3 {
    margin-bottom: 20px;

    font-size: 56px;
    letter-spacing: -3px;
}

.product-info p {
    max-width: 430px;

    color: #aaa;

    font-size: 18px;
}

.product-link {
    display: inline-block;

    margin-top: 32px;

    color: #fff;
    text-decoration: none;
}

.product-link:hover {
    opacity: 0.7;
}


/* =========================================================
   LETRIO PREVIEW
   ========================================================= */

.letrio-preview,
.letrio-game-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 9px;
}

.word-row {
    display: flex;
    gap: 9px;
}

.tile {
    width: 58px;
    height: 58px;

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

    border-radius: 6px;

    font-size: 22px;
    font-weight: 700;
}

.gray {
    background: #3d3d3d;
}

.yellow {
    background: #c9a52a;
}

.green {
    background: #4e8f61;
}


/* =========================================================
   ABOUT
   ========================================================= */

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.about-content h3 {
    font-size: 42px;
    line-height: 1.1;
    letter-spacing: -2px;
}

.about-content p {
    max-width: 500px;

    color: #666;

    font-size: 18px;
}


/* =========================================================
   PRINCIPLES
   ========================================================= */

.principles {
    padding: 80px 0 140px;
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
}

.principles-grid span {
    color: #999;
    font-size: 12px;
}

.principles-grid h3 {
    margin: 18px 0 10px;

    font-size: 24px;
}

.principles-grid p {
    color: #777;
}


/* =========================================================
   CONTACT
   ========================================================= */

.contact {
    padding: 120px 0;

    background: #eaeae6;
}

.contact-content {
    max-width: 700px;
}

.contact-content h3 {
    margin-bottom: 24px;

    font-size: 48px;
    line-height: 1.1;
    letter-spacing: -2px;
}

.contact-content p {
    max-width: 560px;

    color: #666;

    font-size: 18px;
}

.contact-email {
    display: inline-block;

    margin-top: 32px;

    color: #151515;

    font-size: 20px;
    font-weight: 600;

    text-decoration: none;
}

.contact-email:hover {
    opacity: 0.6;
}


/* =========================================================
   FOOTER
   ========================================================= */

footer {
    padding: 40px 0;

    border-top: 1px solid #ddd;
}

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

    color: #777;

    font-size: 13px;
}

footer a {
    color: #777;
    text-decoration: none;
}

footer a:hover {
    color: #151515;
}


/* =========================================================
   LETRIO PAGE
   ========================================================= */

.letrio-hero {
    padding: 120px 0 160px;
}

.letrio-hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
    gap: 100px;
}

.letrio-hero-content h1 {
    font-size: clamp(70px, 10vw, 130px);
    line-height: 0.9;
    letter-spacing: -7px;
}

.letrio-hero-content p {
    margin-top: 32px;
    max-width: 560px;

    color: #666;

    font-size: 20px;
}

.letrio-actions {
    display: flex;
    align-items: center;
    gap: 16px;

    margin-top: 36px;
}

.letrio-game-preview {
    padding: 70px 40px;

    background: #181818;
    border-radius: 24px;
}

.letrio-description {
    padding: 120px 0;
}


/* =========================================================
   LETRIO FEATURES
   ========================================================= */

.letrio-features {
    padding: 120px 0;

    background: #111;
    color: #fff;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.feature-card {
    min-height: 220px;

    padding: 40px;

    border: 1px solid #333;
    border-radius: 16px;
}

.feature-card span {
    color: #777;
    font-size: 12px;
}

.feature-card h3 {
    margin: 24px 0 12px;

    font-size: 28px;
}

.feature-card p {
    color: #999;
    font-size: 16px;
}


/* =========================================================
   LETRIO PLAY CTA
   ========================================================= */

.letrio-play {
    padding: 160px 0;
}

.letrio-play-content {
    text-align: center;
}

.letrio-play h2 {
    font-size: clamp(48px, 7vw, 80px);
    letter-spacing: -4px;
}

.letrio-play p {
    margin: 24px auto 0;

    color: #666;

    font-size: 19px;
}

.letrio-play .button {
    margin-top: 36px;
}


/* =========================================================
   MOBILE
   ========================================================= */

@media (max-width: 700px) {

    .container {
        width: min(100% - 32px, 1120px);
    }


    /* HEADER */

    .header {
        padding: 20px 0;
    }

    .nav {
        flex-wrap: wrap;
        row-gap: 18px;
    }

    .logo {
        flex: 1;
    }

    nav {
        order: 3;

        width: 100%;

        margin-left: 0;

        display: flex;
        justify-content: space-between;
        gap: 12px;
    }

    .languages {
        margin-left: 16px;
    }


    /* HOME HERO */

    .hero {
        min-height: auto;
    }

    .hero-content {
        padding: 100px 0 120px;
    }

    .hero h1 {
        font-size: 58px;
        letter-spacing: -3px;
    }

    .hero p {
        font-size: 17px;
    }


    /* COMMON */

    .products,
    .about,
    .contact,
    .letrio-description,
    .letrio-features {
        padding: 90px 0;
    }

    .section-heading {
        margin-bottom: 40px;
    }


    /* PRODUCT */

    .product-card {
        grid-template-columns: 1fr;
        gap: 60px;

        padding: 36px 24px;
    }

    .product-info h3 {
        font-size: 44px;
    }


    /* ABOUT */

    .about-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .about-content h3 {
        font-size: 36px;
    }


    /* PRINCIPLES */

    .principles {
        padding: 70px 0 100px;
    }

    .principles-grid {
        grid-template-columns: 1fr;
        gap: 44px;
    }


    /* CONTACT */

    .contact-content h3 {
        font-size: 38px;
    }


    /* FOOTER */

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }


    /* LETRIO */

    .letrio-hero {
        padding: 80px 0 100px;
    }

    .letrio-hero-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .letrio-hero-content h1 {
        font-size: 72px;
        letter-spacing: -4px;
    }

    .letrio-hero-content p {
        font-size: 18px;
    }

    .letrio-actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .letrio-game-preview {
        padding: 50px 16px;
        overflow: hidden;
    }

    .letrio-play {
        padding: 110px 0;
    }
}


/* =========================================================
   SMALL MOBILE
   ========================================================= */

@media (max-width: 400px) {

    .hero h1 {
        font-size: 50px;
    }

    .tile {
        width: 42px;
        height: 42px;

        font-size: 18px;
    }

    .word-row {
        gap: 6px;
    }

    .letrio-hero-content h1 {
        font-size: 60px;
    }

    .contact-content h3 {
        font-size: 34px;
    }
}