feat(web): polish catalog motion, empty states, and mobile now-playing

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/web/src/widgets/PlayerBar.module.css

@@ -149,6 +149,115 @@ a.source:hover {
   transform: scale(1.06);
 }
 
+.play:active {
+  transform: scale(0.94);
+}
+
+.nowArt {
+  position: relative;
+  display: grid;
+  place-items: center;
+  flex: none;
+  padding: 0;
+  border-radius: 10px;
+}
+
+.nowEq {
+  position: absolute;
+  right: -2px;
+  bottom: -2px;
+  padding: 2px 4px;
+  border-radius: 6px;
+  background: var(--surface);
+}
+
+.coverLive {
+  animation: pipuCoverPulse 2.4s ease-in-out infinite;
+}
+
+@keyframes pipuCoverPulse {
+  50% {
+    filter: brightness(1.12);
+  }
+}
+
+.queueScrim,
+.sheetScrim {
+  position: fixed;
+  inset: 0;
+  z-index: 15;
+  background: var(--overlay);
+  animation: pipuIn 0.18s ease-out;
+}
+
+.sheet {
+  position: fixed;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  z-index: 16;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 16px;
+  max-height: min(92dvh, 760px);
+  padding: 12px 20px calc(24px + env(safe-area-inset-bottom, 0px));
+  border-radius: 24px 24px 0 0;
+  background: var(--glass);
+  backdrop-filter: blur(28px) saturate(1.3);
+  animation: pipuIn 0.22s ease-out;
+}
+
+.sheetHead {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  width: 100%;
+  font-weight: 600;
+}
+
+.sheetCover {
+  width: min(240px, 56vw) !important;
+  height: min(240px, 56vw) !important;
+  border-radius: 16px;
+}
+
+.sheetMeta {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 4px;
+  text-align: center;
+  min-width: 0;
+  max-width: 100%;
+}
+
+.sheetTitle {
+  font-family: var(--font-display);
+  font-size: 22px;
+  font-weight: 600;
+  color: inherit;
+  text-decoration: none;
+}
+
+.sheetControls,
+.sheetExtra {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 8px;
+  width: 100%;
+}
+
+.sheet .progress {
+  max-width: none;
+}
+
+.sheet .volume {
+  flex: 1;
+  max-width: 160px;
+}
+
 .play[aria-busy='true'] {
   opacity: 0.7;
 }
@@ -218,6 +327,10 @@ a.source:hover {
 }
 
 @media (max-width: 767px) {
+  .now {
+    cursor: pointer;
+  }
+
   .bar {
     grid-template-columns: minmax(0, 1fr) auto;
     padding: 0 12px;
@@ -228,7 +341,7 @@ a.source:hover {
   .right,
   .controls > :first-child,
   .controls > :last-child,
-  .now > button {
+  .now > button:not(.nowArt) {
     display: none;
   }
 }
@@ -237,7 +350,7 @@ a.source:hover {
   position: fixed;
   right: 16px;
   bottom: 100px;
-  z-index: 6;
+  z-index: 16;
   display: flex;
   flex-direction: column;
   width: min(380px, calc(100% - 32px));