.galaxy3d-stage {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: 28px;
}

.galaxy3d-fallback {
    position: absolute;
    inset: 0;
}

.galaxy3d-stage.is-ready .galaxy3d-fallback {
    display: none;
}

#galaxy3d {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity .5s ease;
}

.galaxy3d-stage.is-ready #galaxy3d {
    opacity: 1;
}

.galaxy3d-canvas,
.galaxy3d-labels {
    position: absolute;
    inset: 0;
}

.galaxy3d-labels {
    pointer-events: auto;
}

.node-core,
.node-card {
    pointer-events: auto;
    user-select: none;
}

.node-core {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 22px 25px;
    border: 1px solid #e0defd;
    border-radius: 22px;
    background: #fff;
    box-shadow: 0 24px 70px rgba(31, 26, 82, .25);
    white-space: nowrap;
    transform: translate(-50%, -50%);
}

.node-core span {
    display: grid;
    place-items: center;
    width: 54px;
    height: 54px;
    border-radius: 17px;
    color: #fff;
    background: linear-gradient(135deg, var(--brand), var(--purple));
    font-size: 22px;
    font-weight: 900;
    flex-shrink: 0;
}

.node-core strong {
    font-size: 15px;
    line-height: 1.3;
}

.node-card {
    position: absolute;
    display: grid;
    grid-template-columns: 30px 1fr;
    gap: 8px;
    align-items: center;
    width: 152px;
    padding: 10px 12px;
    border: 1px solid #e8e7fa;
    border-radius: 14px;
    background: rgba(255, 255, 255, .97);
    box-shadow: 0 16px 42px rgba(31, 26, 82, .14);
    color: var(--ink);
    text-decoration: none;
    transform: translate(-50%, -50%) scale(var(--depth, 1));
    opacity: var(--depth, 1);
    transition: width .25s, padding .25s, box-shadow .18s, border-color .18s, opacity .25s;
}

.node-card:hover {
    border-color: #c4bfff;
    box-shadow: 0 20px 50px rgba(31, 26, 82, .22);
}

.node-card span {
    display: grid;
    place-items: center;
    width: 30px;
    height: 30px;
    border-radius: 9px;
    color: #5847e8;
    background: #efefff;
    font-size: 10px;
    font-weight: 900;
    grid-row: span 2;
    transition: width .25s, height .25s;
}

.node-card b {
    display: block;
    font-size: 12px;
    line-height: 1.25;
}

.node-card small {
    display: block;
    color: var(--muted);
    font-size: 10px;
}

/* Cartes hors du premier plan : réduites à une simple pastille avec le
   code de l'application, pour ne pas surcharger la lecture des cartes
   détaillées au premier plan. */
.node-card.is-compact {
    grid-template-columns: 34px;
    width: 34px;
    padding: 0;
    border-radius: 50%;
    box-shadow: 0 8px 20px rgba(31, 26, 82, .12);
    opacity: calc(var(--depth, 1) * .75);
}

.node-card.is-compact span {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    font-size: 10.5px;
}

.node-card.is-compact b,
.node-card.is-compact small {
    display: none;
}

@media (max-width: 600px) {
    .node-card { width: 128px; padding: 8px 10px; }
    .node-core { padding: 15px; }
    .node-core strong { font-size: 13px; }
}

@media (prefers-reduced-motion: reduce) {
    #galaxy3d { transition: none; }
}

.galaxy-head {
    display: grid;
    grid-template-columns: 1.35fr .65fr;
    align-items: end;
    gap: 50px;
    margin: 100px 0 36px;
    padding-top: 70px;
    border-top: 1px solid var(--line);
}

.galaxy-head h2 {
    max-width: 760px;
    font-size: clamp(36px, 4vw, 54px);
}

.galaxy-head p {
    color: var(--muted);
    font-size: 16px;
    line-height: 1.65;
}

.galaxy-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.galaxy-app {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 17px;
    align-items: start;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 18px;
    color: var(--ink);
    background: #fff;
    text-decoration: none;
    transition: border-color .18s, box-shadow .18s, transform .18s;
}

.galaxy-app:hover {
    border-color: #c4bfff;
    box-shadow: 0 16px 38px rgba(16, 24, 40, .08);
    transform: translateY(-2px);
}

.galaxy-app > span {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    color: #5847e8;
    background: #efefff;
    font-size: 13px;
    font-weight: 900;
}

.galaxy-app h3 {
    margin: 1px 0 6px;
    font-size: 18px;
}

.galaxy-app p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.5;
}

@media (max-width: 900px) {
    .galaxy-head { grid-template-columns: 1fr; gap: 10px; }
}

@media (max-width: 650px) {
    .galaxy-head { margin-top: 72px; padding-top: 52px; }
    .galaxy-grid { grid-template-columns: 1fr; }
}