/*
|--------------------------------------------------------------------------
| About page
|--------------------------------------------------------------------------
|
| Personal content, portrait, facts, scrolling and Social links used on the
| left page of the three-page home view.
|
*/

.book__page--scrollable {
    min-height: 0;
    height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
    scrollbar-width: thin;
    scrollbar-color: rgba(79, 140, 138, 0.34) transparent;
    -webkit-overflow-scrolling: touch;
}

.book__page--scrollable::-webkit-scrollbar {
    width: 0.45rem;
}

.book__page--scrollable::-webkit-scrollbar-track {
    background: transparent;
}

.book__page--scrollable::-webkit-scrollbar-thumb {
    border-radius: 999px;
    background: rgba(79, 140, 138, 0.28);
}

.book__page--scrollable::-webkit-scrollbar-thumb:hover {
    background: rgba(79, 140, 138, 0.44);
}

.book__page--scrollable .book__page-inner {
    height: auto;
    min-height: 100%;
}

.book__page-inner--about {
    overflow: visible;
}

.about-content {
    display: grid;
    gap: 1rem;
    margin-top: clamp(1.8rem, 3.5vh, 2.8rem);
    padding-right: 0.35rem;
    padding-bottom: 0.4rem;
}

.about-content__lead,
.about-content__text {
    margin: 0;
    max-width: 36rem;
}

.about-content__lead {
    color: var(--color-text);
    font-size: clamp(1rem, 1.5vw, 1.16rem);
    font-weight: 600;
    line-height: 1.65;
}

.about-content__text {
    color: var(--color-text-muted);
    font-size: 0.94rem;
    line-height: 1.72;
}

.about-profile {
    display: grid;
    grid-template-columns: minmax(7.5rem, 9.5rem) minmax(0, 1fr);
    gap: clamp(1rem, 2vw, 1.5rem);
    align-items: start;
    margin-top: 0.75rem;
    padding-top: 1.35rem;
    border-top: 1px solid rgba(255, 255, 255, 0.055);
}

.about-profile__portrait {
    display: grid;
    place-items: center;
    min-height: 10.5rem;
    overflow: hidden;
    border: 1px solid rgba(79, 140, 138, 0.22);
    border-radius: 0.85rem;
    background-color: rgba(255, 255, 255, 0.018);
    background-image: url("../images/Markus.png");
    background-position: center top;
    background-repeat: no-repeat;
    background-size: cover;
    box-shadow: inset 0 0 2rem rgba(0, 0, 0, 0.16);
}

.about-profile__portrait span {
    display: none;
}

.about-profile__facts {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 0.6rem;
    margin: 0;
}

.about-profile__fact {
    display: grid;
    grid-template-columns: minmax(6.5rem, 0.42fr) minmax(0, 1fr);
    align-items: center;
    gap: 0.9rem;
    min-width: 0;
    padding: 0.8rem 0.95rem;
    border: 1px solid rgba(255, 255, 255, 0.055);
    border-radius: 0.7rem;
    background: rgba(255, 255, 255, 0.018);
}

.about-profile__fact dt {
    margin: 0;
    color: var(--color-accent);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.about-profile__fact dd {
    min-width: 0;
    margin: 0;
    color: var(--color-text);
    font-size: 0.82rem;
    font-weight: 600;
    line-height: 1.45;
}

.about-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    padding-top: 0.3rem;
}

.about-links__item {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 0.8rem;
    border: 1px solid rgba(79, 140, 138, 0.22);
    border-radius: 999px;
    color: var(--color-text-muted);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-decoration: none;
    text-transform: uppercase;
    transition:
        color var(--transition-fast),
        border-color var(--transition-fast),
        background var(--transition-fast),
        transform var(--transition-fast);
}

.about-links__item:hover {
    border-color: rgba(103, 170, 167, 0.52);
    background: rgba(79, 140, 138, 0.07);
    color: var(--color-accent-hover);
    transform: translateY(-1px);
}

.about-links__item:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 0.25rem;
}

.about-social-link {
    display: inline-grid;
    place-items: center;
    width: 2.75rem;
    height: 2.75rem;
    border: 1px solid rgba(79, 140, 138, 0.22);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.012);
    color: var(--color-text-muted);
    text-decoration: none;
    transition:
        color var(--transition-fast),
        border-color var(--transition-fast),
        background var(--transition-fast),
        transform var(--transition-fast);
}

.about-social-link:hover {
    border-color: rgba(103, 170, 167, 0.52);
    background: rgba(79, 140, 138, 0.07);
    color: var(--color-accent-hover);
    transform: translateY(-1px);
}

.about-social-link:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 0.24rem;
}

.about-social-icon {
    display: block;
    width: 1.15rem;
    height: 1.15rem;
    background: currentColor;
    mask-repeat: no-repeat;
    mask-position: center;
    mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    -webkit-mask-position: center;
    -webkit-mask-size: contain;
}

@media (max-width: 1200px) {
    .about-profile {
        grid-template-columns: 7.25rem minmax(0, 1fr);
    }

    .about-profile__portrait {
        min-height: 9rem;
    }

    .about-profile__fact {
        grid-template-columns: minmax(5.8rem, 0.42fr) minmax(0, 1fr);
    }
}

@media (max-width: 900px) {
    .book__page--scrollable {
        height: auto;
        overflow: visible;
        overscroll-behavior: auto;
        scrollbar-gutter: auto;
        scrollbar-width: none;
    }

    .book__page--scrollable::-webkit-scrollbar {
        display: none;
    }

    .book__page--scrollable .book__page-inner {
        min-height: 0;
    }

    .about-content {
        gap: 0.95rem;
        margin-top: 1.5rem;
        padding-right: 0;
        padding-bottom: 0;
    }

    .about-content__lead {
        font-size: 1rem;
    }

    .about-content__text {
        font-size: 0.9rem;
    }

    .about-profile {
        grid-template-columns: minmax(6.75rem, 8.5rem) minmax(0, 1fr);
        gap: 1rem;
        margin-top: 0.5rem;
        padding-top: 1.1rem;
    }

    .about-profile__portrait {
        min-height: 9.25rem;
    }

    .about-profile__fact {
        grid-template-columns: minmax(5.5rem, 0.38fr) minmax(0, 1fr);
        gap: 0.7rem;
        padding: 0.72rem 0.8rem;
    }
}

@media (max-width: 620px) {
    .about-profile {
        grid-template-columns: 1fr;
    }

    .about-profile__portrait {
        width: min(9rem, 46vw);
        min-height: 9rem;
    }

    .about-profile__fact {
        grid-template-columns: minmax(5.25rem, 0.38fr) minmax(0, 1fr);
    }

    .about-links__item {
        min-height: 2.7rem;
    }
}