/** Shared game card surfaces — cover art, gradients, badges. */

/* ---- Cover image layer ---- */
.card-cover,
.lib-tile-cover,
.card-load-transition > .card-cover {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    border-radius: inherit;
    transform: translate3d(0, 0, -4px) scale3d(0.98, 0.98, 1);
    transition: transform var(--card-dur-inner, 240ms) var(--card-ease, cubic-bezier(0.22, 1, 0.36, 1));
    z-index: 0;
    pointer-events: none;
}
.card:hover .card-cover,
.card:focus-visible .card-cover,
.card.is-active .card-cover {
    transform: translate3d(0, 0, -4px) scale3d(1.04, 1.04, 1);
}
.lib-tile:hover .lib-tile-cover,
.lib-tile:focus-visible .lib-tile-cover {
    transform: scale3d(1.03, 1.03, 1);
}
.card.has-cover .card-art::after,
.lib-tile.has-cover .lib-tile-art::after {
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.08) 0%, rgba(0, 0, 0, 0.35) 45%, rgba(0, 0, 0, 0.88) 100%);
    opacity: 1;
}
.card.has-cover .card-icon,
.lib-tile.has-cover .lib-tile-icon-badge {
    opacity: 0;
    transform: scale(0.85);
    pointer-events: none;
}
.card-load-transition.has-cover {
    background: #04040a !important;
}
.card-load-transition.has-cover > .card-cover {
    transform: none;
    transition: none;
}

/* ---- Category fallback art ---- */
.card[data-cat="arcade"]:not([data-art]) .card-art,
.lib-tile[data-cat="arcade"]:not([data-art]) .lib-tile-art,
.card-load-transition[data-cat="arcade"]:not([data-art]) {
    background: radial-gradient(circle at 50% 25%, rgba(217, 70, 239, 0.45), transparent 60%),
        radial-gradient(circle at 15% 75%, rgba(56, 189, 248, 0.25), transparent 45%),
        linear-gradient(160deg, #100a26, #030209);
}

.card[data-cat="sandbox"]:not([data-art]) .card-art,
.lib-tile[data-cat="sandbox"]:not([data-art]) .lib-tile-art,
.card-load-transition[data-cat="sandbox"]:not([data-art]) {
    background: radial-gradient(circle at 50% 25%, rgba(56, 189, 248, 0.45), transparent 60%),
        radial-gradient(circle at 15% 75%, rgba(20, 184, 166, 0.25), transparent 45%),
        linear-gradient(160deg, #051421, #01040a);
}

.card[data-cat="puzzle"]:not([data-art]) .card-art,
.lib-tile[data-cat="puzzle"]:not([data-art]) .lib-tile-art,
.card-load-transition[data-cat="puzzle"]:not([data-art]) {
    background: radial-gradient(circle at 50% 25%, rgba(245, 158, 11, 0.4), transparent 60%),
        radial-gradient(circle at 15% 75%, rgba(129, 140, 248, 0.25), transparent 45%),
        linear-gradient(160deg, #190e05, #050201);
}

.card[data-cat="relax"]:not([data-art]) .card-art,
.lib-tile[data-cat="relax"]:not([data-art]) .lib-tile-art,
.card-load-transition[data-cat="relax"]:not([data-art]) {
    background: radial-gradient(circle at 50% 25%, rgba(16, 185, 129, 0.4), transparent 60%),
        radial-gradient(circle at 15% 75%, rgba(14, 165, 233, 0.25), transparent 45%),
        linear-gradient(160deg, #031610, #010403);
}

.card[data-cat="sports"]:not([data-art]) .card-art,
.lib-tile[data-cat="sports"]:not([data-art]) .lib-tile-art,
.card-load-transition[data-cat="sports"]:not([data-art]) {
    background: radial-gradient(circle at 50% 25%, rgba(251, 146, 60, 0.45), transparent 60%),
        radial-gradient(circle at 15% 75%, rgba(239, 68, 68, 0.25), transparent 45%),
        linear-gradient(160deg, #1d0c05, #050201);
}

/* ---- Per-game art (fallback under cover) ---- */
.card[data-art="blackjack"] .card-art,
.lib-tile[data-art="blackjack"] .lib-tile-art,
.card-load-transition[data-art="blackjack"] {
    background: radial-gradient(circle at 50% 30%, rgba(244, 63, 94, 0.45), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(251, 191, 36, 0.22), transparent 40%),
        radial-gradient(circle at 80% 75%, rgba(255, 255, 255, 0.15), transparent 35%),
        linear-gradient(160deg, #160a22, #04020a);
}

.card[data-art="comet-craft"] .card-art,
.lib-tile[data-art="comet-craft"] .lib-tile-art,
.card-load-transition[data-art="comet-craft"] {
    background: radial-gradient(circle at 50% 30%, rgba(56, 189, 248, 0.48), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(168, 85, 247, 0.26), transparent 45%),
        radial-gradient(circle at 80% 70%, rgba(34, 197, 94, 0.15), transparent 40%),
        linear-gradient(160deg, #051224, #01040a);
}

.card[data-art="cometlife"] .card-art,
.lib-tile[data-art="cometlife"] .lib-tile-art,
.card-load-transition[data-art="cometlife"] {
    background: radial-gradient(circle at 50% 30%, rgba(52, 211, 153, 0.45), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(14, 165, 233, 0.25), transparent 45%),
        linear-gradient(160deg, #031514, #000404);
}

.card[data-art="cosmic-drop"] .card-art,
.lib-tile[data-art="cosmic-drop"] .lib-tile-art,
.card-load-transition[data-art="cosmic-drop"] {
    background: radial-gradient(circle at 50% 30%, rgba(217, 70, 239, 0.48), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(139, 92, 246, 0.28), transparent 45%),
        radial-gradient(circle at 80% 70%, rgba(56, 189, 248, 0.15), transparent 40%),
        linear-gradient(160deg, #0e0524, #010107);
}

.card[data-art="money-clicker"] .card-art,
.lib-tile[data-art="money-clicker"] .lib-tile-art,
.card-load-transition[data-art="money-clicker"] {
    background: radial-gradient(circle at 50% 30%, rgba(250, 204, 21, 0.45), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(34, 197, 94, 0.32), transparent 45%),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.1), transparent 35%),
        linear-gradient(160deg, #051408, #010502);
}

.card[data-art="sandbox"] .card-art,
.lib-tile[data-art="sandbox"] .lib-tile-art,
.card-load-transition[data-art="sandbox"] {
    background: radial-gradient(circle at 50% 30%, rgba(56, 189, 248, 0.48), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(20, 184, 166, 0.24), transparent 45%),
        linear-gradient(160deg, #03111f, #01040a);
}

.card[data-art="dead-signal"] .card-art,
.lib-tile[data-art="dead-signal"] .lib-tile-art,
.card-load-transition[data-art="dead-signal"] {
    background: radial-gradient(circle at 50% 30%, rgba(239, 68, 68, 0.45), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(249, 115, 22, 0.25), transparent 45%),
        linear-gradient(160deg, #160305, #040101);
}

.card[data-art="wikiflow"] .card-art,
.lib-tile[data-art="wikiflow"] .lib-tile-art,
.card-load-transition[data-art="wikiflow"] {
    background: radial-gradient(circle at 50% 30%, rgba(245, 158, 11, 0.42), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(217, 70, 239, 0.22), transparent 45%),
        linear-gradient(160deg, #1c0f06, #050201);
}

.card[data-art="perfect-circle"] .card-art,
.lib-tile[data-art="perfect-circle"] .lib-tile-art,
.card-load-transition[data-art="perfect-circle"] {
    background: radial-gradient(circle at 50% 30%, rgba(245, 158, 11, 0.45), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(251, 146, 60, 0.2), transparent 45%),
        linear-gradient(160deg, #180d05, #040201);
}

.card[data-art="kern-type"] .card-art,
.lib-tile[data-art="kern-type"] .lib-tile-art,
.card-load-transition[data-art="kern-type"] {
    background: radial-gradient(circle at 50% 30%, rgba(168, 85, 247, 0.42), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(244, 63, 94, 0.24), transparent 45%),
        linear-gradient(160deg, #130722, #04020a);
}

.card[data-art="stacker"] .card-art,
.lib-tile[data-art="stacker"] .lib-tile-art,
.card-load-transition[data-art="stacker"] {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.12) 0 18%, transparent 18%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.08) 0 36%, transparent 36% 54%, rgba(255, 255, 255, 0.1) 54% 72%, transparent 72%),
        radial-gradient(circle at 50% 28%, rgba(96, 165, 250, 0.45), transparent 50%),
        linear-gradient(160deg, #0f172a, #020617);
}

.card[data-art="main-street-factory"] .card-art,
.lib-tile[data-art="main-street-factory"] .lib-tile-art,
.card-load-transition[data-art="main-street-factory"] {
    background:
        repeating-linear-gradient(90deg, rgba(245, 197, 24, 0.35) 0 8px, transparent 8px 16px),
        linear-gradient(180deg, rgba(255, 253, 224, 0.2) 0 30%, transparent 30%),
        radial-gradient(circle at 50% 40%, rgba(200, 194, 176, 0.5), transparent 55%),
        linear-gradient(160deg, #3a3830, #1a1814);
}

.card[data-art="pong"] .card-art,
.lib-tile[data-art="pong"] .lib-tile-art,
.card-load-transition[data-art="pong"] {
    background: radial-gradient(circle at 50% 30%, rgba(217, 70, 239, 0.42), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(56, 189, 248, 0.25), transparent 45%),
        linear-gradient(160deg, #0c081e, #010106);
}

.card[data-art="flappy-bird"] .card-art,
.lib-tile[data-art="flappy-bird"] .lib-tile-art,
.card-load-transition[data-art="flappy-bird"] {
    background: radial-gradient(circle at 50% 30%, rgba(56, 189, 248, 0.48), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(16, 185, 129, 0.22), transparent 45%),
        linear-gradient(160deg, #041221, #01040a);
}

.card[data-art="retro-bowl"] .card-art,
.lib-tile[data-art="retro-bowl"] .lib-tile-art,
.card-load-transition[data-art="retro-bowl"] {
    background: radial-gradient(circle at 50% 30%, rgba(34, 197, 94, 0.45), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(251, 146, 60, 0.2), transparent 45%),
        linear-gradient(160deg, #051408, #010402);
}

.card[data-art="basket-random"] .card-art,
.lib-tile[data-art="basket-random"] .lib-tile-art,
.card-load-transition[data-art="basket-random"] {
    background: radial-gradient(circle at 50% 30%, rgba(251, 146, 60, 0.48), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(56, 189, 248, 0.22), transparent 45%),
        linear-gradient(160deg, #1a0b04, #050201);
}

.card[data-art="baseball-bros"] .card-art,
.lib-tile[data-art="baseball-bros"] .lib-tile-art,
.card-load-transition[data-art="baseball-bros"] {
    background: radial-gradient(circle at 50% 30%, rgba(251, 146, 60, 0.45), transparent 55%),
        radial-gradient(circle at 20% 75%, rgba(16, 185, 129, 0.22), transparent 45%),
        radial-gradient(circle at 80% 70%, rgba(244, 63, 94, 0.15), transparent 40%),
        linear-gradient(160deg, #1c0c05, #050201);
}

.card[data-art="2048"] .card-art,
.lib-tile[data-art="2048"] .lib-tile-art,
.card-load-transition[data-art="2048"] {
    background: radial-gradient(circle at 50% 28%, rgba(237, 146, 64, 0.55), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(246, 224, 176, 0.28), transparent 42%),
        linear-gradient(160deg, #2a1810, #0a0604);
}

.card[data-art="cookie-clicker"] .card-art,
.lib-tile[data-art="cookie-clicker"] .lib-tile-art,
.card-load-transition[data-art="cookie-clicker"] {
    background: radial-gradient(circle at 50% 30%, rgba(180, 120, 60, 0.55), transparent 52%),
        radial-gradient(circle at 20% 75%, rgba(250, 204, 21, 0.35), transparent 45%),
        linear-gradient(160deg, #1a1008, #060402);
}

.card[data-art="pac-man"] .card-art,
.lib-tile[data-art="pac-man"] .lib-tile-art,
.card-load-transition[data-art="pac-man"] {
    background: radial-gradient(circle at 50% 32%, rgba(250, 204, 21, 0.58), transparent 50%),
        radial-gradient(circle at 18% 70%, rgba(59, 130, 246, 0.35), transparent 42%),
        linear-gradient(160deg, #080820, #020208);
}

.card[data-art="geometry-dash"] .card-art,
.lib-tile[data-art="geometry-dash"] .lib-tile-art,
.card-load-transition[data-art="geometry-dash"] {
    background: radial-gradient(circle at 50% 28%, rgba(250, 204, 21, 0.5), transparent 50%),
        radial-gradient(circle at 75% 68%, rgba(56, 189, 248, 0.35), transparent 45%),
        linear-gradient(160deg, #060a1c, #020208);
}

.card[data-art="run-3"] .card-art,
.lib-tile[data-art="run-3"] .lib-tile-art,
.card-load-transition[data-art="run-3"] {
    background: radial-gradient(circle at 50% 30%, rgba(148, 163, 184, 0.45), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(56, 189, 248, 0.32), transparent 45%),
        linear-gradient(160deg, #0a0c14, #030408);
}

.card[data-art="crossy-road"] .card-art,
.lib-tile[data-art="crossy-road"] .lib-tile-art,
.card-load-transition[data-art="crossy-road"] {
    background: radial-gradient(circle at 50% 30%, rgba(34, 197, 94, 0.48), transparent 52%),
        radial-gradient(circle at 20% 72%, rgba(250, 204, 21, 0.28), transparent 42%),
        linear-gradient(160deg, #081210, #020604);
}

.card[data-art="chrome-dino"] .card-art,
.lib-tile[data-art="chrome-dino"] .lib-tile-art,
.card-load-transition[data-art="chrome-dino"] {
    background: radial-gradient(circle at 50% 30%, rgba(34, 197, 94, 0.42), transparent 52%),
        radial-gradient(circle at 20% 72%, rgba(148, 163, 184, 0.28), transparent 45%),
        linear-gradient(160deg, #0a0e0c, #030504);
}

.card[data-art="fruit-ninja"] .card-art,
.lib-tile[data-art="fruit-ninja"] .lib-tile-art,
.card-load-transition[data-art="fruit-ninja"] {
    background: radial-gradient(circle at 50% 30%, rgba(239, 68, 68, 0.52), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(250, 204, 21, 0.32), transparent 42%),
        linear-gradient(160deg, #1c0608, #060204);
}

.card[data-art="moto-x3m"] .card-art,
.lib-tile[data-art="moto-x3m"] .lib-tile-art,
.card-load-transition[data-art="moto-x3m"] {
    background: radial-gradient(circle at 50% 28%, rgba(239, 68, 68, 0.5), transparent 52%),
        radial-gradient(circle at 20% 72%, rgba(251, 146, 60, 0.32), transparent 45%),
        linear-gradient(160deg, #140804, #050201);
}

.card[data-art="red-ball-4"] .card-art,
.lib-tile[data-art="red-ball-4"] .lib-tile-art,
.card-load-transition[data-art="red-ball-4"] {
    background: radial-gradient(circle at 50% 30%, rgba(239, 68, 68, 0.55), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(250, 204, 21, 0.25), transparent 42%),
        linear-gradient(160deg, #180604, #060202);
}

.card[data-art="duck-life"] .card-art,
.lib-tile[data-art="duck-life"] .lib-tile-art,
.card-load-transition[data-art="duck-life"] {
    background: radial-gradient(circle at 50% 30%, rgba(250, 204, 21, 0.48), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(251, 146, 60, 0.28), transparent 45%),
        linear-gradient(160deg, #181004, #060402);
}

.card[data-art="learn-to-fly"] .card-art,
.lib-tile[data-art="learn-to-fly"] .lib-tile-art,
.card-load-transition[data-art="learn-to-fly"] {
    background: radial-gradient(circle at 50% 28%, rgba(56, 189, 248, 0.48), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(250, 204, 21, 0.28), transparent 42%),
        linear-gradient(160deg, #061420, #020810);
}

.card[data-art="little-alchemy"] .card-art,
.lib-tile[data-art="little-alchemy"] .lib-tile-art,
.card-load-transition[data-art="little-alchemy"] {
    background: radial-gradient(circle at 50% 30%, rgba(56, 189, 248, 0.42), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(148, 163, 184, 0.28), transparent 45%),
        linear-gradient(160deg, #0a1018, #030608);
}

.card[data-art="chess"] .card-art,
.lib-tile[data-art="chess"] .lib-tile-art,
.card-load-transition[data-art="chess"] {
    background: radial-gradient(circle at 50% 30%, rgba(148, 163, 184, 0.42), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(245, 158, 11, 0.25), transparent 45%),
        linear-gradient(160deg, #0c0e12, #030406);
}

.card[data-art="breakout"] .card-art,
.lib-tile[data-art="breakout"] .lib-tile-art,
.card-load-transition[data-art="breakout"] {
    background: radial-gradient(circle at 50% 30%, rgba(244, 63, 94, 0.48), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(168, 85, 247, 0.28), transparent 45%),
        linear-gradient(160deg, #120818, #04020a);
}

.card[data-art="asteroids"] .card-art,
.lib-tile[data-art="asteroids"] .lib-tile-art,
.card-load-transition[data-art="asteroids"] {
    background: radial-gradient(circle at 50% 30%, rgba(148, 163, 184, 0.38), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(56, 189, 248, 0.28), transparent 45%),
        linear-gradient(160deg, #080a10, #020408);
}

.card[data-art="paper-io"] .card-art,
.lib-tile[data-art="paper-io"] .lib-tile-art,
.card-load-transition[data-art="paper-io"] {
    background: radial-gradient(circle at 50% 30%, rgba(56, 189, 248, 0.48), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(168, 85, 247, 0.28), transparent 45%),
        linear-gradient(160deg, #060a18, #020408);
}

.card[data-art="ovo"] .card-art,
.lib-tile[data-art="ovo"] .lib-tile-art,
.card-load-transition[data-art="ovo"] {
    background: radial-gradient(circle at 50% 30%, rgba(148, 163, 184, 0.42), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(56, 189, 248, 0.28), transparent 45%),
        linear-gradient(160deg, #0a0c12, #030406);
}

.card[data-art="bloons-td-4"] .card-art,
.lib-tile[data-art="bloons-td-4"] .lib-tile-art,
.card-load-transition[data-art="bloons-td-4"] {
    background: radial-gradient(circle at 50% 28%, rgba(34, 197, 94, 0.48), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(250, 204, 21, 0.32), transparent 45%),
        linear-gradient(160deg, #081408, #020604);
}

.card[data-art="fireboy-watergirl"] .card-art,
.lib-tile[data-art="fireboy-watergirl"] .lib-tile-art,
.card-load-transition[data-art="fireboy-watergirl"] {
    background: radial-gradient(circle at 30% 32%, rgba(239, 68, 68, 0.45), transparent 48%),
        radial-gradient(circle at 70% 32%, rgba(59, 130, 246, 0.45), transparent 48%),
        linear-gradient(160deg, #0a0814, #030408);
}

.card[data-art="cut-the-rope"] .card-art,
.lib-tile[data-art="cut-the-rope"] .lib-tile-art,
.card-load-transition[data-art="cut-the-rope"] {
    background: radial-gradient(circle at 50% 30%, rgba(34, 197, 94, 0.48), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(250, 204, 21, 0.28), transparent 45%),
        linear-gradient(160deg, #081210, #020604);
}

.card[data-art="monkey-mart"] .card-art,
.lib-tile[data-art="monkey-mart"] .lib-tile-art,
.card-load-transition[data-art="monkey-mart"] {
    background: radial-gradient(circle at 50% 30%, rgba(250, 204, 21, 0.48), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(34, 197, 94, 0.32), transparent 45%),
        linear-gradient(160deg, #141008, #050402);
}

.card[data-art="drive-mad"] .card-art,
.lib-tile[data-art="drive-mad"] .lib-tile-art,
.card-load-transition[data-art="drive-mad"] {
    background: radial-gradient(circle at 50% 28%, rgba(251, 146, 60, 0.5), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(239, 68, 68, 0.32), transparent 45%),
        linear-gradient(160deg, #140804, #050201);
}

.card[data-art="eggy-car"] .card-art,
.lib-tile[data-art="eggy-car"] .lib-tile-art,
.card-load-transition[data-art="eggy-car"] {
    background: radial-gradient(circle at 50% 30%, rgba(250, 204, 21, 0.48), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(251, 146, 60, 0.28), transparent 45%),
        linear-gradient(160deg, #181004, #060402);
}

.card[data-art="friday-night-funkin"] .card-art,
.lib-tile[data-art="friday-night-funkin"] .lib-tile-art,
.card-load-transition[data-art="friday-night-funkin"] {
    background: radial-gradient(circle at 50% 30%, rgba(168, 85, 247, 0.5), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(244, 63, 94, 0.32), transparent 45%),
        linear-gradient(160deg, #100818, #04020a);
}

.card[data-art="hextris"] .card-art,
.lib-tile[data-art="hextris"] .lib-tile-art,
.card-load-transition[data-art="hextris"] {
    background: radial-gradient(circle at 50% 30%, rgba(244, 63, 94, 0.48), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(168, 85, 247, 0.32), transparent 45%),
        linear-gradient(160deg, #100818, #04020a);
}

.card[data-art="doom"] .card-art,
.lib-tile[data-art="doom"] .lib-tile-art,
.card-load-transition[data-art="doom"] {
    background: radial-gradient(circle at 50% 30%, rgba(239, 68, 68, 0.52), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(127, 29, 29, 0.35), transparent 45%),
        linear-gradient(160deg, #120404, #040202);
}

.card[data-art="cluster-rush"] .card-art,
.lib-tile[data-art="cluster-rush"] .lib-tile-art,
.card-load-transition[data-art="cluster-rush"] {
    background: radial-gradient(circle at 50% 30%, rgba(56, 189, 248, 0.48), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(168, 85, 247, 0.28), transparent 45%),
        linear-gradient(160deg, #060a18, #020408);
}

.card[data-art="bitlife"] .card-art,
.lib-tile[data-art="bitlife"] .lib-tile-art,
.card-load-transition[data-art="bitlife"] {
    background: radial-gradient(circle at 50% 30%, rgba(56, 189, 248, 0.45), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(34, 197, 94, 0.28), transparent 45%),
        linear-gradient(160deg, #061018, #020608);
}

.card[data-art="a-dark-room"] .card-art,
.lib-tile[data-art="a-dark-room"] .lib-tile-art,
.card-load-transition[data-art="a-dark-room"] {
    background: radial-gradient(circle at 50% 30%, rgba(148, 163, 184, 0.35), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(245, 158, 11, 0.22), transparent 45%),
        linear-gradient(160deg, #080808, #020202);
}

.card[data-art="clicker-heroes"] .card-art,
.lib-tile[data-art="clicker-heroes"] .lib-tile-art,
.card-load-transition[data-art="clicker-heroes"] {
    background: radial-gradient(circle at 50% 30%, rgba(250, 204, 21, 0.48), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(239, 68, 68, 0.28), transparent 45%),
        linear-gradient(160deg, #181004, #060402);
}

.card[data-art="basketball-legends"] .card-art,
.lib-tile[data-art="basketball-legends"] .lib-tile-art,
.card-load-transition[data-art="basketball-legends"] {
    background: radial-gradient(circle at 50% 30%, rgba(251, 146, 60, 0.5), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(239, 68, 68, 0.28), transparent 45%),
        linear-gradient(160deg, #180a04, #060202);
}

.card[data-art="google-snake"] .card-art,
.lib-tile[data-art="google-snake"] .lib-tile-art,
.card-load-transition[data-art="google-snake"] {
    background: radial-gradient(circle at 50% 30%, rgba(34, 197, 94, 0.48), transparent 52%),
        radial-gradient(circle at 22% 72%, rgba(250, 204, 21, 0.28), transparent 45%),
        linear-gradient(160deg, #081408, #020604);
}

.card[data-art="game-library"] .card-art,
.lib-tile[data-art="game-library"] .lib-tile-art,
.card-load-transition[data-art="game-library"] {
    background: radial-gradient(circle at 50% 25%, rgba(168, 85, 247, 0.45), transparent 58%),
        radial-gradient(circle at 18% 72%, rgba(56, 189, 248, 0.28), transparent 45%),
        repeating-linear-gradient(135deg, rgba(168, 85, 247, 0.08) 0 2px, transparent 2px 14px),
        linear-gradient(160deg, #100524, #01040a);
}

/* ---- Category color pills ---- */
.card-cat-pill,
.lib-tile-cat {
    display: inline-flex;
    align-items: center;
    padding: 3px 8px;
    border-radius: 999px;
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.92);
    background: rgba(0, 0, 0, 0.42);
    border: 1px solid rgba(255, 255, 255, 0.14);
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}
[data-cat="arcade"] .card-cat-pill, [data-cat="arcade"] .lib-tile-cat { border-color: rgba(var(--cat-arcade-rgb), 0.45); color: rgba(255, 255, 255, 0.95); }
[data-cat="sandbox"] .card-cat-pill, [data-cat="sandbox"] .lib-tile-cat { border-color: rgba(var(--cat-sandbox-rgb), 0.45); }
[data-cat="puzzle"] .card-cat-pill, [data-cat="puzzle"] .lib-tile-cat { border-color: rgba(var(--cat-puzzle-rgb), 0.45); }
[data-cat="relax"] .card-cat-pill, [data-cat="relax"] .lib-tile-cat { border-color: rgba(var(--cat-relax-rgb), 0.45); }
[data-cat="sports"] .card-cat-pill, [data-cat="sports"] .lib-tile-cat { border-color: rgba(var(--cat-sports-rgb), 0.45); }

/* ---- Pinned gold accent ---- */
.card.is-pinned::after {
    background:
        conic-gradient(
            from var(--card-border-angle),
            transparent 0deg,
            transparent 240deg,
            rgba(251, 191, 36, 0.35) 270deg,
            rgba(251, 191, 36, 0.98) 300deg,
            rgba(255, 255, 255, 1) 320deg,
            rgba(251, 191, 36, 0.98) 340deg,
            transparent 360deg
        );
}
.card.is-pinned::before {
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.2),
        inset 0 -24px 38px rgba(0, 0, 0, 0.28),
        0 16px 34px rgba(0, 0, 0, 0.34),
        0 6px 22px rgba(251, 191, 36, 0.18);
}