Добавлена подсветка воспроизводимой песни

PlaylistShared.Pwa/wwwroot/css/app.css

@@ -113,15 +113,108 @@ code {
 .horizontal-scroll {
     overflow-x: auto;
     scroll-snap-type: x mandatory;
-    overflow-y: hidden; /* отключаем вертикальный скролл */
+    overflow-y: hidden;
     cursor: grab;
 }
 
     .horizontal-scroll:active {
         cursor: grabbing;
     }
-/* Для WebKit (Chrome, Edge, Safari) можно включить горизонтальный скролл мышью */
+
 .horizontal-scroll {
     scrollbar-width: thin;
     -webkit-overflow-scrolling: touch;
+}
+
+/* ===== Animations ===== */
+
+@keyframes fadeIn {
+    from { opacity: 0; }
+    to   { opacity: 1; }
+}
+
+@keyframes slideUpFade {
+    from { opacity: 0; transform: translateY(10px); }
+    to   { opacity: 1; transform: translateY(0); }
+}
+
+@keyframes equalizerPulse {
+    0%,  100% { transform: scaleY(0.5) translateY(3px); }
+    50%        { transform: scaleY(1)   translateY(0); }
+}
+
+@keyframes playerSlideUp {
+    from { opacity: 0; transform: translateY(20px); }
+    to   { opacity: 1; transform: translateY(0); }
+}
+
+/* Fade-in for content that loads */
+.content-fade-in {
+    animation: fadeIn 0.3s ease-out;
+}
+
+/* Track items slide up when list loads */
+.tracks-slide-in {
+    animation: slideUpFade 0.25s ease-out;
+}
+
+/* Equalizer icon bounce */
+.eq-animate {
+    display: inline-block;
+    transform-origin: bottom center;
+    animation: equalizerPulse 0.55s ease-in-out infinite alternate;
+}
+
+/* Feature cards on home page */
+.feature-card {
+    transition: transform 0.2s ease, box-shadow 0.2s ease !important;
+    cursor: default;
+}
+
+.feature-card:hover {
+    transform: translateY(-3px) !important;
+    box-shadow: 0 6px 20px rgba(126, 111, 255, 0.18) !important;
+}
+
+/* Audio player entrance */
+.player-enter {
+    animation: playerSlideUp 0.3s ease-out;
+}
+
+/* Play overlay — opacity-based show/hide */
+.play-overlay {
+    position: absolute;
+    top: 0; left: 0; right: 0; bottom: 0;
+    background: rgba(0, 0, 0, 0.6);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    border-radius: 4px;
+    opacity: 0;
+    transition: opacity 0.2s ease;
+    cursor: pointer;
+}
+
+.play-overlay.play-overlay--visible {
+    opacity: 1;
+}
+
+/* Touch devices: play overlay always visible */
+@media (hover: none) {
+    .play-overlay {
+        opacity: 1;
+    }
+}
+
+/* Current track — smooth highlight transition */
+.current-track {
+    transition: background 0.35s ease;
+}
+
+/* Mobile padding tightening */
+@media (max-width: 599px) {
+    .mud-container {
+        padding-left: 6px !important;
+        padding-right: 6px !important;
+    }
 }