/* نفس بناء learnerPathStart: لمعة مزدوجة وحافة وبروز وضغط موحّد، بألوان البداية الحالية. */
body.md-cosmos.md-home :is(#activities .md-filters button,#activities .md-game-play,.md-discover-review-action,.md-home-progress .md-mission-play) {
    --button-top:#82dce6; --button-bottom:#2495a6; --button-base:#0c4d5a;
    min-height:52px; border:1px solid #ffffff80; border-radius:16px;
    background:linear-gradient(180deg,#ffffff42 0%,transparent 46%),linear-gradient(var(--button-top),var(--button-bottom));
    box-shadow:inset 0 2px 0 #ffffff8c,inset 0 -2px 0 #0002,0 5px 0 var(--button-base),0 7px 9px #0004;
    text-shadow:0 2px 1px #00343e99; font-weight:800; margin-bottom:5px; box-sizing:border-box;
    transition:translate .12s ease,box-shadow .12s ease,filter .12s ease; transform:none; translate:none;
}
body.md-cosmos.md-home #activities .md-filters button[aria-pressed="false"] {
    --button-top:#294769; --button-bottom:#1b3457; --button-base:#0a1730;
}
body.md-cosmos.md-home :is(#activities .md-filters button:hover,#activities .md-game:hover .md-game-play,.md-discover-review:hover .md-discover-review-action,.md-home-progress .md-mission-play:hover) {
    background:linear-gradient(180deg,#ffffff55,transparent 46%),linear-gradient(var(--button-top),var(--button-bottom));
    filter:brightness(1.06); opacity:1;
}
body.md-cosmos.md-home :is(#activities .md-filters button:active,#activities .md-game:active .md-game-play,.md-discover-review:active .md-discover-review-action,.md-home-progress .md-mission-play:active) {
    translate:0 4px; transform:none;
    box-shadow:inset 0 2px 0 #ffffff70,inset 0 -2px 0 #0002,0 1px 0 var(--button-base); filter:none;
}
@media(prefers-reduced-motion:reduce) {
    body.md-cosmos.md-home :is(#activities .md-filters button,#activities .md-game-play,.md-discover-review-action,.md-home-progress .md-mission-play) { transition:none; }
}