.core-layout {
    display: grid;
    grid-template-columns:
        minmax(0, 1fr)
        minmax(20rem, 0.85fr);
    align-items: center;
    gap: var(--space-20);
    margin-top:
        var(--space-16);
}

.core-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height:
        34rem;
    overflow: hidden;
    isolation: isolate;
    border:
        var(--border-width-thin)
        solid
        var(--color-border);
    background-color:
        var(--color-surface);
    transition:
        border-color var(--transition-normal),
        background-color var(--transition-normal);
}

.core-visual::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(
            to right,
            var(--color-grid) 1px,
            transparent 1px
        ),
        linear-gradient(
            to bottom,
            var(--color-grid) 1px,
            transparent 1px
        );
    background-size:
        4rem 4rem;
    mask-image:
        radial-gradient(
            circle at center,
            black 0%,
            black 45%,
            transparent 82%
        );
    opacity: 0.7;
    z-index:
        var(--z-base);
}

.core-visual::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 5%;
    right: 5%;
    height:
        var(--border-width-thin);
    background:
        linear-gradient(
            to right,
            transparent,
            var(--color-core-line) 20%,
            var(--color-core-line) 80%,
            transparent
        );
    opacity: 0.7;
    pointer-events: none;
    z-index:
        var(--z-base);
}

.core-visual__object {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width:
        min(20rem, 68%);
    aspect-ratio: 1;
    border:
        var(--border-width-thin)
        solid
        var(--color-border-strong);
    border-radius:
        var(--radius-full);
    background:
        radial-gradient(
            circle at center,
            var(--color-core-glow) 0%,
            transparent 58%
        );
    box-shadow:
        0 0 5rem
        var(--color-core-glow);
    isolation: isolate;
    z-index:
        var(--z-content);
    animation:
        core-float
        8s
        ease-in-out
        infinite;
    transition:
        transform var(--transition-slow),
        border-color var(--transition-normal),
        box-shadow var(--transition-normal);
}

.core-visual__object::before {
    content: "";
    position: absolute;
    width:
        62%;
    aspect-ratio: 1;
    border:
        var(--border-width-thin)
        solid
        var(--color-core-secondary);
    border-radius:
        var(--radius-full);
    opacity:
        0.65;
    animation:
        core-inner-rotation
        18s
        linear
        infinite;
}

.core-visual__object::after {
    content: "";
    position: absolute;
    width:
        0.9rem;
    height:
        0.9rem;
    border-radius:
        var(--radius-full);
    background-color:
        var(--color-core-primary);
    box-shadow:
        0 0 1.5rem
        var(--color-core-glow),
        0 0 3rem
        var(--color-core-glow);
    animation:
        core-pulse
        4s
        ease-in-out
        infinite;
    z-index:
        var(--z-content);
}

.core-orbit {
    position: absolute;
    display: block;
    aspect-ratio: 1;
    border:
        var(--border-width-thin)
        solid
        var(--color-core-line);
    border-radius:
        var(--radius-full);
    pointer-events: none;
    z-index:
        var(--z-base);
}

/* El marcador es hijo de la órbita para seguir su rotación. */
.core-orbit--outer {
    width:
        92%;
    opacity:
        0.75;
    transform:
        rotate(0deg)
        scaleY(0.42);
    animation:
        core-orbit-outer
        24s
        linear
        infinite;
}

.core-orbit--outer .core-marker {
    top:
        0;
    left:
        50%;
    transform:
        translate(-50%, -50%);
}

.core-orbit--inner {
    width:
        72%;
    opacity:
        0.55;
    transform:
        rotate(0deg)
        scaleY(0.58);
    animation:
        core-orbit-inner
        16s
        linear
        infinite reverse;
}

.core-orbit--inner .core-marker {
    top:
        50%;
    right:
        0;
    transform:
        translate(50%, -50%);
}

.core-marker {
    position: absolute;
    display: block;
    width:
        0.35rem;
    height:
        0.35rem;
    border-radius:
        var(--radius-full);
    background-color:
        var(--color-node-secondary);
    box-shadow:
        0 0 1rem
        var(--color-core-glow);
    z-index:
        var(--z-content);
    pointer-events: none;
    transition:
        background-color var(--transition-normal);
}

.core-visual__label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform:
        translate(-50%, -50%);
    z-index:
        var(--z-content);
    white-space: nowrap;
    font-family:
        var(--font-mono);
    font-size:
        var(--font-size-label);
    font-weight:
        var(--font-weight-medium);
    line-height:
        var(--line-height-snug);
    letter-spacing:
        0.16em;
    text-transform:
        uppercase;
    color:
        var(--color-text-primary);
    pointer-events: none;
}

.core-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.core-content .section-title {
    max-width:
        10ch;
}

.core-content .section-description {
    max-width:
        48ch;
    margin-top:
        var(--space-6);
}

.core-principles {
    display: flex;
    flex-direction: column;
    width:
        100%;
    margin-top:
        var(--space-10);
    border-top:
        var(--border-width-thin)
        solid
        var(--color-border);
}

.core-principle {
    display: grid;
    grid-template-columns:
        3rem
        minmax(0, 1fr);
    align-items: center;
    gap:
        var(--space-4);
    min-height:
        3.75rem;
    border-bottom:
        var(--border-width-thin)
        solid
        var(--color-border);
    transition:
        background-color var(--transition-normal),
        padding-inline var(--transition-normal);
}

.core-principle__number {
    font-family:
        var(--font-mono);
    font-size:
        var(--font-size-xs);
    font-weight:
        var(--font-weight-medium);
    line-height:
        var(--line-height-snug);
    letter-spacing:
        0.08em;
    color:
        var(--color-text-muted);
    transition:
        color var(--transition-normal);
}

.core-principle__name {
    font-family:
        var(--font-heading);
    font-size:
        var(--font-size-md);
    font-weight:
        var(--font-weight-medium);
    line-height:
        var(--line-height-snug);
    color:
        var(--color-text-secondary);
    transition:
        color var(--transition-normal),
        transform var(--transition-normal);
}

.core-principle:hover {
    background-color:
        var(--color-surface);
    padding-inline:
        var(--space-3);
}

.core-principle:hover .core-principle__number {
    color:
        var(--color-text-primary);
}

.core-principle:hover .core-principle__name {
    color:
        var(--color-text-primary);
    transform:
        translateX(var(--space-2));
}

.core-visual:hover {
    border-color:
        var(--color-border-strong);
}

.core-visual:hover .core-visual__object {
    border-color:
        var(--color-text-primary);
    box-shadow:
        0 0 6rem
        var(--color-core-glow);
}

.core-visual:hover .core-marker {
    background-color:
        var(--color-node-primary);
}

@keyframes core-float {
    0%,
    100% {
        transform:
            translateY(0);
    }

    50% {
        transform:
            translateY(-7px);
    }
}

@keyframes core-inner-rotation {
    from {
        transform:
            rotate(0deg);
    }

    to {
        transform:
            rotate(360deg);
    }
}

@keyframes core-pulse {
    0%,
    100% {
        transform:
            scale(0.9);
        opacity:
            0.75;
    }

    50% {
        transform:
            scale(1.15);
        opacity:
            1;
    }
}

@keyframes core-orbit-outer {
    from {
        transform:
            rotate(0deg)
            scaleY(0.42);
    }

    to {
        transform:
            rotate(360deg)
            scaleY(0.42);
    }
}

@keyframes core-orbit-inner {
    from {
        transform:
            rotate(0deg)
            scaleY(0.58);
    }

    to {
        transform:
            rotate(360deg)
            scaleY(0.58);
    }
}

@media (max-width: 1023px) {
    .core-layout {
        grid-template-columns:
            minmax(0, 1fr)
            minmax(18rem, 0.8fr);
        gap:
            var(--space-12);
        margin-top:
            var(--space-12);
    }

    .core-visual {
        min-height:
            28rem;
    }

    .core-visual__object {
        width:
            min(17rem, 72%);
    }

    .core-content .section-title {
        max-width:
            12ch;
    }
}

@media (max-width: 767px) {
    .core-layout {
        grid-template-columns:
            1fr;
        gap:
            var(--space-12);
        margin-top:
            var(--space-10);
    }

    .core-visual {
        min-height:
            22rem;
    }

    .core-visual::before {
        background-size:
            3rem 3rem;
    }

    .core-visual__object {
        width:
            12rem;
    }

    .core-content .section-title {
        max-width:
            100%;
    }

    .core-content .section-description {
        margin-top:
            var(--space-5);
    }

    .core-principles {
        margin-top:
            var(--space-8);
    }

    .core-principle {
        min-height:
            3.5rem;
    }

    .core-principle:hover {
        padding-inline:
            var(--space-2);
    }

    .core-principle:hover .core-principle__name {
        transform:
            translateX(var(--space-1));
    }
}

@media (max-width: 480px) {
    .core-layout {
        gap:
            var(--space-10);
    }

    .core-visual {
        min-height:
            19rem;
    }

    .core-visual__object {
        width:
            9.5rem;
    }

    .core-visual__object::after {
        width:
            0.75rem;
        height:
            0.75rem;
    }

    .core-visual__label {
        font-size:
            0.625rem;
        letter-spacing:
            0.12em;
    }

    .core-marker {
        width:
            0.3rem;
        height:
            0.3rem;
    }

    .core-principle {
        grid-template-columns:
            2.5rem
            minmax(0, 1fr);
        gap:
            var(--space-3);
    }

    .core-principle__name {
        font-size:
            var(--font-size-sm);
    }
}

@media (prefers-reduced-motion: reduce) {
    .core-visual__object,
    .core-visual__object::before,
    .core-visual__object::after,
    .core-orbit--outer,
    .core-orbit--inner {
        animation: none;
    }

    .core-principle,
    .core-principle__number,
    .core-principle__name,
    .core-visual,
    .core-visual__object,
    .core-marker {
        transition: none;
    }

    .core-principle:hover .core-principle__name {
        transform: none;
    }
}