/* ==========================================================================
   DIRA GROUP: ecosystem tree (DIRA as the root, entities branch from it)
   ========================================================================== */

.grp-tree {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* Root node */
.grp-root {
    position: relative;
    z-index: 2;
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.375rem;
    align-self: flex-start;
    padding: 1.25rem 1.75rem;
    border-radius: var(--dira-radius-md);
    background: var(--dira-midnight);
    box-shadow: var(--dira-shadow-3);
    overflow: hidden;
    isolation: isolate;
}

.grp-root::before {
    content: '';
    position: absolute;
    z-index: -1;
    inset: 0;
    background: radial-gradient(circle at 100% 0%, rgba(99, 91, 255, 0.45) 0%, transparent 60%);
}

.grp-root__mark {
    font-size: 32px;
    line-height: 1;
    font-weight: 800;
    letter-spacing: 0.06em;
    color: #FFFFFF;
}

.grp-root__label {
    font-size: 12px;
    line-height: 16px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--dira-inverse-primary);
}

/* Trunk and branches */
.grp-entities {
    position: relative;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: -0.25rem;
    padding: 2.25rem 0 0 2.25rem;
}

.grp-entities::before {
    content: '';
    position: absolute;
    left: 1.25rem;
    top: 0;
    bottom: 1.5rem;
    width: 2px;
    background: linear-gradient(180deg, var(--dira-primary) 0%, var(--dira-secondary) 70%, rgba(155, 81, 224, 0.1) 100%);
    border-radius: 2px;
}

.grp-entity {
    position: relative;
}

/* branch connector */
.grp-entity::before {
    content: '';
    position: absolute;
    left: -1rem;
    top: 2.125rem;
    width: 1rem;
    height: 2px;
    background: var(--dira-primary);
    opacity: 0.55;
}

.grp-entity__node {
    position: absolute;
    left: -1.5rem;
    top: 1.75rem;
    width: 14px;
    height: 14px;
    margin-left: -0.5px;
    border-radius: 50%;
    background: var(--dira-white);
    border: 3px solid var(--dira-primary);
    box-shadow: 0 0 0 4px rgba(99, 91, 255, 0.12);
    z-index: 1;
}

.grp-entity--live .grp-entity__node {
    background: var(--dira-gradient);
    border-color: var(--dira-white);
    box-shadow: 0 0 0 3px rgba(99, 91, 255, 0.35);
}

.grp-entity__card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.875rem;
    padding: clamp(1.25rem, 3vw, 2rem);
    background: var(--dira-white);
    border: 1px solid var(--dira-border);
    border-radius: var(--dira-radius-md);
    box-shadow: var(--dira-shadow-1);
    transition: transform var(--dira-dur) var(--dira-ease), box-shadow var(--dira-dur) var(--dira-ease), border-color var(--dira-dur) var(--dira-ease);
}

.grp-entity--live .grp-entity__card:hover {
    transform: translateY(-2px);
    box-shadow: var(--dira-shadow-2);
    border-color: var(--dira-border-strong);
}

/* forthcoming entities: dashed, quieter */
.grp-entity--soon .grp-entity__card {
    background: transparent;
    border: 1.5px dashed var(--dira-border-strong);
    box-shadow: none;
}

.grp-entity--soon .grp-entity__node {
    border-style: dashed;
    box-shadow: none;
}

.grp-entity__card h2 {
    font-size: 24px;
    line-height: 32px;
}

.grp-entity__text {
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
    max-width: 46rem;
}

.grp-entity__text p {
    font-size: 15px;
    line-height: 25px;
    color: var(--dira-muted);
}

.grp-entity__link {
    margin-top: 0.25rem;
}

@media (min-width: 1025px) {
    .grp-entities {
        padding-left: 4rem;
        gap: 2rem;
    }

    .grp-entities::before {
        left: 2rem;
    }

    .grp-entity::before {
        left: -2rem;
        width: 2rem;
    }

    .grp-entity__node {
        left: -2.5rem;
    }

    .grp-entity__card h2 {
        font-size: 28px;
        line-height: 36px;
    }

    .grp-entity__text p {
        font-size: 16px;
        line-height: 26px;
    }

    .grp-root {
        margin-left: 0.25rem;
    }
}

@media (max-width: 479px) {
    
    .grp-entities {
        padding-left: 1.75rem;
    }

    .grp-entities::before {
        left: 0.75rem;
    }

    .grp-entity::before {
        left: -1rem;
        width: 0.75rem;
    }

    .grp-entity__node {
        left: -1.375rem;
    }

    .grp-entity__link {
        width: 100%;
    }
}

@media (max-width: 1025px){
    main{
        padding: 10px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .grp-entity--live .grp-entity__card:hover {
        transform: none;
    }
}