#category-cards{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}
#category-cards [id^="category-level-"]{position:relative;display:flex;flex-wrap:nowrap;overflow-x:auto;gap:8px;padding:8px 4px;border-radius:12px;background:rgba(22,22,26,.4);-webkit-backdrop-filter:saturate(160%) blur(10px);backdrop-filter:saturate(160%) blur(10px);border:1px solid rgba(255,255,255,.08);box-shadow:0 8px 20px rgba(0,0,0,.18);scroll-snap-type:x mandatory}
#category-cards [id^="category-level-"]::-webkit-scrollbar{height:8px}
#category-cards [id^="category-level-"]::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18);border-radius:8px}
#category-cards [id^="category-level-"]::before,#category-cards [id^="category-level-"]::after{content:"";position:absolute;top:0;bottom:0;width:36px;pointer-events:none}
#category-cards [id^="category-level-"]::before{left:0;background:linear-gradient(90deg,rgba(0,0,0,.22),rgba(0,0,0,0))}
#category-cards [id^="category-level-"]::after{right:0;background:linear-gradient(270deg,rgba(0,0,0,.22),rgba(0,0,0,0))}
#category-cards .cat-btn{border-radius:999px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.06);color:#fff;transition:transform .15s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease;scroll-snap-align:start}
#category-cards .cat-btn:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(0,0,0,.25);background:rgba(255,255,255,.12)}
#category-cards .btn-primary.cat-btn{background:linear-gradient(135deg,#6a8dff,#7ad7ff);border-color:transparent;box-shadow:0 10px 26px rgba(102,153,255,.4),inset 0 1px 0 rgba(255,255,255,.2);color:#0b1225}
#category-cards .btn-outline-secondary.cat-btn{border-color:rgba(255,255,255,.16);color:#eaeaea}
#category-cards .category-icon{width:18px;height:18px;border-radius:6px;object-fit:cover;vertical-align:middle}
#category-cards .badge{border-radius:999px;padding:.15rem .4rem;margin-left:6px}
#category-cards .cat-btn:active{transform:translateY(0)}
#category-cards .cat-btn:focus{outline:none;box-shadow:0 0 0 0.15rem rgba(102,153,255,.35)}

#category-cards .scroll-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:2;width:28px;height:28px;border-radius:999px;border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.16);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 14px rgba(0,0,0,.25);backdrop-filter:saturate(140%) blur(8px);-webkit-backdrop-filter:saturate(140%) blur(8px);cursor:pointer;transition:opacity .2s ease,transform .15s ease}
#category-cards .scroll-arrow.left{left:6px}
#category-cards .scroll-arrow.right{right:6px}
#category-cards .scroll-arrow:active{transform:translateY(-50%) scale(.96)}
#category-cards .scroll-arrow.hidden{opacity:0;pointer-events:none}

#masonry-grid.skeleton-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.skeleton-card{height:320px;border-radius:16px;background:linear-gradient(90deg,rgba(255,255,255,.06) 0%,rgba(255,255,255,.1) 50%,rgba(255,255,255,.06) 100%);background-size:200% 100%;animation:skeleton-pulse 1.2s ease-in-out infinite;box-shadow:0 6px 18px rgba(0,0,0,.18)}
@keyframes skeleton-pulse{0%{background-position:0 0}100%{background-position:200% 0}}

#main-container .fade-in{animation:fadein .25s ease-in both}
@keyframes fadein{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}

@media (max-width: 768px){
 #category-cards{gap:6px;margin-bottom:10px}
 #category-cards [id^="category-level-"]{gap:6px;padding:6px;border-radius:12px;-webkit-overflow-scrolling:touch}
 #category-cards [id^="category-level-"]::before,#category-cards [id^="category-level-"]::after{width:24px}
 #category-cards .cat-btn{padding:8px 12px;font-size:.95rem;line-height:1.2}
 #category-cards .category-icon{width:20px;height:20px}
 #category-cards .scroll-arrow{display:none}
}

@media (max-width: 576px){
 #masonry-grid.skeleton-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .skeleton-card{height:260px}
}