:root {
    --color-text: #ffffff;
    --color-text-muted: rgba(255, 255, 255, 0.6);
    --color-text-link: rgba(255, 255, 255, 0.4);
    --color-glass-bg: rgba(255, 255, 255, 0.1);
    --color-glass-border: rgba(255, 255, 255, 0.1);
    --color-glass-bg-hover: rgba(255, 255, 255, 0.2);
    --color-glass-border-hover: rgba(255, 255, 255, 0.3);
    --font-primary: "Montserrat", sans-serif;

    --frame-inset-x: 3%;
    --frame-inset-y: 1.5%;
    --frame-border-radius: 40px;
    --device-max-width-desktop: 450px;
    --device-max-width-mobile: 300px;

    --desktop-vertical-clearance: 150px;

    --desktop-padding-h: 90px;
    --mobile-padding-h: 20px;
    --footer-bottom-offset: 20px;

    --desktop-content-max-width: 1800px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    background-image: url("bg.png");
    background-size: cover;
    background-position: center center;
    background-attachment: fixed;
    font-family: var(--font-primary);
    color: var(--color-text);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

.page-header {
    padding: 0 0 0 15px;
    margin-top: 15px;
    position: absolute;
    top: 0;
    left: 0;
    width: auto;
    z-index: 10;
}

.promo-container {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 80px var(--desktop-padding-h) calc(var(--footer-bottom-offset) + 40px);
}

.promo-content {
    display: flex;
    flex-wrap: nowrap;
    gap: 100px;
    width: 100%;

    max-width: var(--desktop-content-max-width);
    align-items: flex-start;
}

.promo-text {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    align-self: stretch;
    padding-top: 20px;
}

.promo-visual {
    flex: 0 0 auto;
    display: flex;
    justify-content: flex-end;
    align-items: flex-start;
    max-width: 100%;
}

.page-footer {
    padding: 20px;
    text-align: center;
    width: 100%;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 18px;
    border-radius: 15px;
    background-color: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    backdrop-filter: blur(10px);
    color: var(--color-text-muted);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1.5px;
    cursor: pointer;
    text-transform: uppercase;
    text-align: center;
    transition: all 0.3s ease;
    overflow: hidden;
    text-decoration: none;
}

.button--back {
    min-width: 120px;
}

.button i {
    line-height: 1;
}

.button:hover {
    background-color: var(--color-glass-bg-hover);
    border-color: var(--color-glass-border-hover);
    color: var(--color-text);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.button:active {
    transform: translateY(0);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}


.promo-title {
    font-size: clamp(40px, 5.5vw, 65px);
    font-weight: 600;
    line-height: 1.2;
    min-height: 1.2em;
    margin-bottom: 20px;
}

.promo-title.typewriter-completed {
    min-height: 0;
}

.store-links {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 5px;
    align-items: flex-start;
    padding-bottom: 20px;
}

.store-links a {
    display: block;
    transition: transform 0.2s ease;
}

.store-links a:hover {
    transform: scale(1.05);
}

.store-links img {
    height: 69px;
    width: auto;
}

.device-mockup {
    position: relative;
    display: inline-block;
    max-width: var(--device-max-width-desktop);
    width: 100%;
}

.device-mockup__image {
    display: block;
    width: 100%;
    height: auto;
    pointer-events: none;
    position: relative;
    z-index: 2;
    object-fit: contain;
    max-height: calc(100vh - var(--desktop-vertical-clearance));
}

.device-mockup__iframe {
    position: absolute;

    border: none;
    border-radius: var(--frame-border-radius);
    overflow: hidden;
    z-index: 1;
    background-color: #000;
    transform-origin: top left;
}

.privacy-link {
    color: var(--color-text-link);
    font-size: 14px;
    transition: color 0.2s ease;
}

.privacy-link:hover {
    color: var(--color-text-muted);
}

@media (min-width: 851px) {
    body {
        overflow-y: hidden;
    }

    .page-footer {
        position: absolute;
        bottom: var(--footer-bottom-offset);
        left: 0;
        right: 0;
        padding: 10px 20px;
    }
}

@media (max-width: 992px) {
    :root {
        --desktop-padding-h: 60px;
    }

    .promo-content {
        gap: 50px;

        max-width: var(--desktop-content-max-width);
    }

    .store-links img {
        height: 55px;
    }
}

@media (max-width: 850px) {
    :root {
        --desktop-padding-h: var(--mobile-padding-h);
    }

    body {
        overflow-y: auto;
    }

    .page-header {
        position: static;
        display: flex;
        justify-content: flex-start;
        padding: 25px var(--mobile-padding-h) 0;
        margin-top: 0;
        margin-bottom: 20px;
    }

    .promo-container {
        padding: 0 var(--mobile-padding-h) 40px;
        align-items: flex-start;
    }

    .promo-content {
        flex-direction: column;
        align-items: center;
        gap: 40px;
        max-width: none;
    }

    .promo-text {
        order: 1;
        align-items: center;
        align-self: auto;
        padding-top: 0;
        width: 100%;
        text-align: center;
    }

    .promo-visual {
        order: 2;
        width: 100%;
        max-width: var(--device-max-width-mobile);
        justify-content: center;
    }

    .device-mockup {
        max-width: var(--device-max-width-mobile);
    }

    .device-mockup__image {
        max-height: none;
    }

    .page-footer {
        position: static;
        padding: 20px 20px 30px;
    }

    .store-links {
        margin-top: 30px;
        flex-direction: row;
        justify-content: center;
        align-items: center;
        gap: 5px;
        padding-bottom: 0;
    }

    .store-links img {
        height: 50px;
    }

    .promo-title {
        font-size: clamp(36px, 11vw, 50px);
        min-height: 3.7em;
        margin-bottom: 0;
    }

    .button {
        font-size: 12px;
        padding: 8px 14px;
    }
}

@media (max-width: 480px) {
    .store-links {
        flex-direction: row;
        gap: 5px;
        align-items: center;
    }

    .device-mockup {
        max-width: calc(var(--device-max-width-mobile) * 0.95);
    }
}