*{margin:0;padding:0;box-sizing:border-box}:root{--primary:#ff4b6e;--secondary:#00d9ff;--accent:gold;--dark:#0d0d1a;--darker:#050510;--card:hsla(0,0%,100%,.05);--text:#fff;--text-muted:#8892a4;--gradient:linear-gradient(135deg,#ff4b6e,#ff6b8a 50%,#ff8fa3);--gradient-glow:linear-gradient(135deg,rgba(255,75,110,.4),rgba(255,111,138,.2))}body,html{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--darker);color:var(--text);line-height:1.5;overflow-x:hidden;-webkit-font-smoothing:antialiased}body{display:flex;flex-direction:column;background:radial-gradient(circle at 50% 0,rgba(255,75,110,.15) 0,transparent 50%),radial-gradient(circle at 80% 100%,rgba(0,217,255,.1) 0,transparent 40%),var(--darker)}.app-container,body{min-height:100vh;min-height:100dvh}.app-container{max-width:430px;margin:0 auto;position:relative;background:inherit}.bottom-nav{position:fixed;bottom:0;left:0;right:0;background:rgba(13,13,26,.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top:1px solid rgba(255,75,110,.2);padding:8px 0 24px;z-index:1000;display:flex;justify-content:space-around}.nav-item{display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px 16px;color:var(--text-muted);text-decoration:none;font-size:10px;font-weight:500;transition:all .3s}.nav-item.active{color:var(--primary)}.nav-item .icon{font-size:24px;filter:drop-shadow(0 0 8px transparent);transition:all .3s}.nav-item.active .icon{transform:scale(1.1);filter:drop-shadow(0 0 12px rgba(255,75,110,.6))}.main-content{flex:1 1;padding-bottom:100px}.app-header{padding:16px 20px;display:flex;justify-content:space-between;align-items:center}.app-header h1{font-size:24px;font-weight:700;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.user-balance{display:flex;align-items:center;gap:4px;background:rgba(255,215,0,.2);padding:6px 12px;border-radius:20px;font-size:14px;font-weight:600;color:var(--accent)}.card{background:var(--card);border:1px solid hsla(0,0%,100%,.08);border-radius:16px;padding:16px;margin:12px 16px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.card-glow{box-shadow:0 0 30px rgba(255,75,110,.1),inset 0 1px 0 hsla(0,0%,100%,.05)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 24px;border-radius:30px;font-weight:600;font-size:16px;border:none;cursor:pointer;transition:all .3s;text-decoration:none}.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 4px 20px rgba(255,75,110,.4)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(255,75,110,.6)}.btn-secondary{background:rgba(0,217,255,.2);color:var(--secondary);border:1px solid var(--secondary)}.btn-ghost{background:transparent;color:var(--text-muted)}.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.8);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:2000;opacity:0;visibility:hidden;transition:all .3s}.modal-overlay.visible{opacity:1;visibility:visible}.bottom-sheet{position:fixed;bottom:0;left:0;right:0;background:var(--dark);border-radius:24px 24px 0 0;padding:12px 20px 40px;z-index:2001;transform:translateY(100%);transition:transform .4s cubic-bezier(.32,.72,0,1);max-height:85vh;overflow-y:auto}.bottom-sheet.visible{transform:translateY(0)}.sheet-handle{width:36px;height:4px;background:hsla(0,0%,100%,.2);border-radius:2px;margin:0 auto 20px}.song-card{display:flex;gap:12px;padding:12px;background:var(--card);border:1px solid hsla(0,0%,100%,.06);border-radius:12px;margin-bottom:12px;transition:all .3s}.song-card:active{background:rgba(255,75,110,.1);border-color:rgba(255,75,110,.3)}.song-cover{width:60px;height:60px;border-radius:12px;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-size:28px}.song-info{flex:1 1}.song-title{font-weight:600;margin-bottom:2px}.song-artist{color:var(--text-muted);font-size:13px}.song-meta{display:flex;gap:8px;margin-top:6px}.tag{padding:2px 8px;border-radius:10px;font-size:11px;font-weight:600}.tag-easy{background:rgba(0,217,255,.2);color:var(--secondary)}.tag-medium{background:rgba(255,215,0,.2);color:var(--accent)}.tag-hard{background:rgba(255,75,110,.2);color:var(--primary)}.live-card{position:relative;border-radius:20px;overflow:hidden;margin:12px 16px;aspect-ratio:9/16;max-height:400px;background:linear-gradient(145deg,#1a1a2e,#0f1419)}.live-badge{position:absolute;top:16px;left:16px;background:red;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:700;display:flex;align-items:center;gap:4px;animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}.gift-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:12px;gap:12px;padding:8px 0}.gift-item{display:flex;flex-direction:column;align-items:center;gap:6px;padding:12px 8px;background:hsla(0,0%,100%,.05);border:1px solid hsla(0,0%,100%,.1);border-radius:12px;cursor:pointer;transition:all .2s}.gift-item:active{transform:scale(.95);background:rgba(255,75,110,.2);border-color:var(--primary)}.gift-icon{font-size:28px}.gift-name{font-size:11px;color:var(--text-muted)}.gift-cost{font-size:12px;color:var(--accent);font-weight:600}.location-item{display:flex;align-items:center;gap:12px;padding:16px;background:hsla(0,0%,100%,.03);border:1px solid hsla(0,0%,100%,.08);border-radius:12px;margin-bottom:8px;cursor:pointer;transition:all .2s}.location-item:active{background:rgba(255,75,110,.15);border-color:var(--primary)}.location-item.selected{background:rgba(255,75,110,.1);border-color:var(--primary)}.leaderboard-item{display:flex;align-items:center;gap:12px;padding:12px 16px;margin:8px 16px;background:var(--card);border-radius:16px}.rank-badge{font-size:20px;font-weight:800;width:32px;text-align:center}.rank-1{color:gold}.rank-2{color:silver}.rank-3{color:#cd7f32}.avatar{width:44px;height:44px;border-radius:50%;background:var(--gradient);display:flex;align-items:center;justify-content:center;font-size:24px}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes giftFly{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-200px) scale(1.5)}}.gift-fly{animation:giftFly 2s ease-out forwards}@media (min-width:430px){.bottom-nav{max-width:430px;left:50%;transform:translateX(-50%);border-radius:20px 20px 0 0}.bottom-sheet{max-width:430px;left:50%;transform:translateX(-50%) translateY(100%)}.bottom-sheet.visible{transform:translateX(-50%) translateY(0)}}