*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden;background:#000;color:#fff;font-family:'SF Pro Display',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,sans-serif;-webkit-text-size-adjust:100%;overscroll-behavior:none;-webkit-font-smoothing:antialiased}
.zsp-app{position:fixed;top:0;left:0;right:0;bottom:0;background:#000}
/* Header */
.zsp-header{position:fixed;top:0;left:0;right:0;height:52px;display:flex;align-items:center;justify-content:space-between;padding:0 12px;padding-top:constant(safe-area-inset-top);padding-top:env(safe-area-inset-top);background:linear-gradient(to bottom,rgba(0,0,0,.75) 0%,rgba(0,0,0,.3) 60%,transparent 100%);z-index:100;gap:8px}
.zsp-search-btn,.zsp-close{color:#fff;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:50%;flex-shrink:0;text-decoration:none;background:none;border:none;cursor:pointer;-webkit-tap-highlight-color:transparent;transition:background .15s}
.zsp-search-btn:active,.zsp-close:active{background:rgba(255,255,255,.12)}
.zsp-search-btn svg,.zsp-close svg{width:22px;height:22px}
.zsp-nav{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}
.zsp-tab{color:rgba(255,255,255,.45);text-decoration:none;font-size:14px;font-weight:600;padding:6px 12px;position:relative;transition:all .2s;white-space:nowrap;background:none;border:none;cursor:pointer;font-family:inherit;border-radius:16px;letter-spacing:.2px;-webkit-tap-highlight-color:transparent}
.zsp-tab.active{color:#fff;background:rgba(255,255,255,.12)}
.zsp-tab:active{background:rgba(255,255,255,.08)}
/* Container & Slides */
.zsp-container{position:absolute;top:0;left:0;right:0;bottom:0;overflow-y:scroll;-webkit-scroll-snap-type:y mandatory;scroll-snap-type:y mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.zsp-container::-webkit-scrollbar{display:none}
.zsp-slide{position:relative;width:100vw;height:100vh;height:100dvh;scroll-snap-align:start;scroll-snap-stop:always;background:#000;display:flex;align-items:center;justify-content:center}
.zsp-video{position:absolute;top:0;left:0;right:0;bottom:0}
.zsp-video iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:none}
.zsp-poster{position:absolute;top:0;left:0;right:0;bottom:0;background-size:cover;background-position:center;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:opacity .4s ease}
.zsp-slide.playing .zsp-poster{opacity:0;pointer-events:none}
.zsp-play{width:64px;height:64px;background:rgba(0,0,0,.4);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:50%;display:flex;align-items:center;justify-content:center;border:2px solid rgba(255,255,255,.2);transition:transform .2s}
.zsp-play:active{transform:scale(.92)}
.zsp-play svg{width:28px;height:28px}
/* Right action buttons */
.zsp-actions{position:absolute;right:8px;bottom:140px;display:flex;flex-direction:column;align-items:center;gap:18px;z-index:50}
.zsp-action,.zsp-mute-btn{display:flex;flex-direction:column;align-items:center;gap:4px;background:rgba(255,255,255,.08);border:none;color:#fff;cursor:pointer;width:44px;height:44px;border-radius:50%;justify-content:center;-webkit-tap-highlight-color:transparent;transition:transform .15s,background .15s;padding:0}
.zsp-action:active,.zsp-mute-btn:active{transform:scale(1.1);background:rgba(255,255,255,.18)}
.zsp-action svg,.zsp-mute-btn svg{width:22px;height:22px;filter:drop-shadow(0 1px 2px rgba(0,0,0,.4))}
.zsp-action span{font-size:10px;font-weight:500;position:absolute;bottom:-16px;white-space:nowrap;text-shadow:0 1px 2px rgba(0,0,0,.5)}
.zsp-views{flex-direction:column;background:transparent !important}
.zsp-views span{position:static;font-size:11px;font-weight:600;text-shadow:0 1px 3px rgba(0,0,0,.6)}
.zsp-like .zsp-heart-outline{display:block}
.zsp-like .zsp-heart-filled{display:none}
.zsp-like.liked .zsp-heart-outline{display:none}
.zsp-like.liked .zsp-heart-filled{display:block}
.zsp-like.liked{color:#fe2c55;background:rgba(254,44,85,.15)}
.zsp-mute-icon,.zsp-unmute-icon{display:none}
.zsp-mute-btn.muted .zsp-mute-icon{display:block}
.zsp-mute-btn:not(.muted) .zsp-unmute-icon{display:block}
/* Bottom content area */
.zsp-content{position:absolute;left:0;right:0;bottom:0;padding:0 14px 28px;background:linear-gradient(to top,rgba(0,0,0,.65) 0%,rgba(0,0,0,.35) 50%,transparent 100%);z-index:40;padding-top:60px}
.zsp-author-wrap{margin-bottom:6px}
.zsp-author{color:#fff;font-weight:700;font-size:15px;display:inline;text-decoration:none;background:none;border:none;cursor:pointer;padding:0;font-family:inherit;letter-spacing:.1px}
.zsp-author:active{opacity:.7}
.zsp-title{font-size:13px;font-weight:400;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:rgba(255,255,255,.9);line-height:1.4}
.zsp-desc{font-size:12px;color:rgba(255,255,255,.6);display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:4px}
/* Song download card */
.zsp-song-card{display:flex;align-items:center;gap:10px;background:rgba(255,255,255,.08);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-radius:10px;padding:10px 12px;margin-top:10px;text-decoration:none;color:#fff;transition:background .15s;border:1px solid rgba(255,255,255,.06);width:100%}
.zsp-song-card:active{background:rgba(255,255,255,.15)}
.zsp-song-thumb{width:40px;height:40px;border-radius:8px;flex-shrink:0;background-size:cover;background-position:center;position:relative;overflow:hidden}
.zsp-song-thumb::after{content:'';position:absolute;top:0;left:0;right:0;bottom:0;border-radius:8px;border:1px solid rgba(255,255,255,.1)}
.zsp-song-thumb svg{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:16px;height:16px;opacity:.9;filter:drop-shadow(0 1px 2px rgba(0,0,0,.5))}
.zsp-song-card-text{flex:1;min-width:0;overflow:hidden}
.zsp-song-card-label{font-size:13px;font-weight:600;white-space:nowrap;display:block;overflow:hidden;text-overflow:ellipsis}
.zsp-song-card-artist{font-size:11px;color:rgba(255,255,255,.5);display:block;margin-top:1px}
.zsp-song-card-arrow{width:20px;height:20px;flex-shrink:0;opacity:.5}
/* Progress bar */
.zsp-progress{position:absolute;bottom:0;left:0;right:0;height:20px;padding-top:18px;background:transparent;z-index:60;cursor:pointer}
.zsp-progress-track{height:2px;background:rgba(255,255,255,.2);position:relative}
.zsp-progress-bar{height:100%;background:#fff;width:0;transition:width .1s linear;pointer-events:none;border-radius:1px}
/* Toast & loader */
.zsp-toast{position:fixed;bottom:80px;left:50%;transform:translateX(-50%);background:rgba(30,30,30,.95);color:#fff;padding:10px 20px;border-radius:20px;font-size:13px;font-weight:500;z-index:200;display:none;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1)}
.zsp-loader{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);z-index:200;display:none}
.zsp-spinner{width:28px;height:28px;border:2px solid rgba(255,255,255,.2);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.zsp-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;text-align:center;padding:20px}
.zsp-empty p{font-size:18px;color:rgba(255,255,255,.7);margin-bottom:20px}
.zsp-btn{background:#fe2c55;color:#fff;padding:12px 28px;border-radius:4px;text-decoration:none;font-weight:600;border:none;cursor:pointer;font-size:15px}
.zsp-push-btn{background:rgba(255,255,255,.15);color:#fff;padding:6px 16px;border-radius:20px;font-size:14px;font-weight:600;border:none;cursor:pointer;transition:all .2s;margin-left:8px}
.zsp-push-btn:hover{background:rgba(255,255,255,.25)}
.zsp-push-btn.sent{background:rgba(40,167,69,.8)}
.zsp-push-btn.sending{opacity:.6;cursor:wait}
.zsp-search-btn{background:none;border:none;color:#fff;cursor:pointer;padding:8px;opacity:.9;transition:opacity .2s}
.zsp-search-btn:hover{opacity:1}
.zsp-search-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000;z-index:200;display:none;flex-direction:column;opacity:0;transition:opacity .2s}
.zsp-search-overlay.open{display:flex;opacity:1}
.zsp-search-header{display:flex;align-items:center;gap:12px;padding:12px 16px;padding-top:max(12px,constant(safe-area-inset-top));padding-top:max(12px,env(safe-area-inset-top))}
.zsp-search-input-wrap{flex:1;display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.1);border-radius:10px;padding:0 12px;height:42px}
.zsp-search-input{flex:1;background:none;border:none;outline:none;color:#fff;font-size:16px;font-family:inherit;caret-color:#fe2c55}
.zsp-search-input::placeholder{color:rgba(255,255,255,.4)}
.zsp-search-clear{background:none;border:none;color:rgba(255,255,255,.5);cursor:pointer;padding:4px;display:flex}
.zsp-search-close-btn{background:none;border:none;color:#fff;font-size:15px;font-weight:600;cursor:pointer;padding:8px;white-space:nowrap}
.zsp-search-label{padding:16px 16px 8px;color:rgba(255,255,255,.5);font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}
.zsp-search-results{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:0 16px 16px}
.zsp-search-card{display:flex;align-items:center;gap:12px;padding:10px 0;cursor:pointer;border-bottom:1px solid rgba(255,255,255,.06);transition:background .15s}
.zsp-search-card:active{background:rgba(255,255,255,.05);border-radius:8px}
.zsp-search-thumb{width:100px;height:56px;border-radius:8px;object-fit:cover;flex-shrink:0;background:#111}
.zsp-search-info{flex:1;min-width:0}
.zsp-search-title{color:#fff;font-size:14px;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.3;margin:0 0 4px}
.zsp-search-meta{color:rgba(255,255,255,.5);font-size:12px;display:flex;align-items:center;gap:6px}
.zsp-search-meta span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.zsp-search-empty{text-align:center;padding:48px 16px;color:rgba(255,255,255,.4);font-size:15px}
.zsp-search-loading{text-align:center;padding:32px;color:rgba(255,255,255,.3)}
/* Ad Slide */
.zsp-ad-slide{position:relative;width:100vw;height:100vh;height:100dvh;scroll-snap-align:start;scroll-snap-stop:always;background:#111;display:flex;align-items:center;justify-content:center;flex-direction:column;overflow:hidden;contain:layout style}
.zsp-ad-label{position:absolute;top:60px;top:max(60px,constant(safe-area-inset-top));top:max(60px,env(safe-area-inset-top));left:16px;color:rgba(255,255,255,.35);font-size:11px;font-weight:600;letter-spacing:1px;text-transform:uppercase;z-index:10}
.zsp-ad-content{position:relative;display:flex;align-items:center;justify-content:center;flex:1;width:100%;padding:0;box-sizing:border-box;overflow:hidden;z-index:1}
.zsp-ad-content iframe{display:block;margin:0 auto}
.zsp-ad-content img{max-width:100%;max-height:80vh;object-fit:contain}
.zsp-ad-content video{display:block}
/* Ad timer + skip */
.zsp-ad-timer{position:absolute;top:56px;top:max(56px,constant(safe-area-inset-top));top:max(56px,env(safe-area-inset-top));right:16px;background:rgba(255,255,255,.15);color:#fff;font-size:13px;font-weight:700;padding:6px 14px;border-radius:20px;z-index:10;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);pointer-events:none}
.zsp-ad-timer.done{display:none}
.zsp-ad-skip{position:absolute;top:56px;top:max(56px,constant(safe-area-inset-top));top:max(56px,env(safe-area-inset-top));right:16px;display:none;align-items:center;gap:6px;background:rgba(255,255,255,.2);color:#fff;font-size:13px;font-weight:600;padding:7px 16px;border-radius:20px;border:none;z-index:10;cursor:pointer;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);-webkit-tap-highlight-color:transparent}
.zsp-ad-skip svg{width:16px;height:16px;fill:none;stroke:#fff;stroke-width:2}
.zsp-ad-skip.show{display:flex}
.zsp-ad-skip:active{background:rgba(255,255,255,.35)}
/* Ad mute button */
.zsp-ad-mute{position:absolute;top:56px;top:max(56px,constant(safe-area-inset-top));top:max(56px,env(safe-area-inset-top));right:120px;display:none;align-items:center;justify-content:center;width:36px;height:36px;background:rgba(255,255,255,.15);border:none;border-radius:50%;color:#fff;z-index:10;cursor:pointer;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);-webkit-tap-highlight-color:transparent}
.zsp-ad-mute svg{width:20px;height:20px;fill:currentColor}
.zsp-ad-mute.show{display:flex}
.zsp-ad-mute:active{background:rgba(255,255,255,.3)}
/* CTA bar */
.zsp-ad-cta{position:absolute;bottom:0;left:0;right:0;display:flex;align-items:center;gap:10px;padding:12px 16px;background:linear-gradient(to top,rgba(0,0,0,.85),rgba(0,0,0,.6),transparent);z-index:5;padding-bottom:max(12px,constant(safe-area-inset-bottom));padding-bottom:max(12px,env(safe-area-inset-bottom))}
.zsp-ad-cta-info{flex:1;min-width:0}
.zsp-ad-cta-sponsored{font-size:10px;color:rgba(255,255,255,.5);font-weight:600;text-transform:uppercase;letter-spacing:.5px}
.zsp-ad-cta-name{font-size:14px;color:#fff;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.zsp-ad-cta-btn{background:#fff;color:#000;font-size:13px;font-weight:700;padding:8px 18px;border-radius:4px;text-decoration:none;white-space:nowrap;flex-shrink:0;transition:background .2s}
.zsp-ad-cta-btn:active{background:rgba(255,255,255,.8)}
/* Panels (Discover, Following, Artist Profile) */
.zsp-panel{position:fixed;top:0;left:0;right:0;bottom:0;background:#000;z-index:150;display:none;flex-direction:column;overflow:hidden}
.zsp-panel.open{display:flex}
.zsp-panel-header{padding:12px 16px;padding-top:max(12px,constant(safe-area-inset-top));padding-top:max(12px,env(safe-area-inset-top));display:flex;align-items:center;gap:8px}
.zsp-panel-header h2{color:#fff;font-size:20px;font-weight:700;margin:0}
.zsp-panel-search{padding:0 16px 12px}
.zsp-panel-search input{width:100%;background:rgba(255,255,255,.1);border:none;border-radius:10px;padding:10px 14px;color:#fff;font-size:15px;outline:none}
.zsp-panel-search input::placeholder{color:rgba(255,255,255,.35)}
.zsp-panel-back{background:none;border:none;color:#fff;cursor:pointer;padding:8px;display:flex;align-items:center;flex-shrink:0}
/* Artist Cards */
.zsp-artist-list{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:0 16px 80px}
.zsp-artist-card{display:flex;align-items:center;gap:14px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06);cursor:pointer}
.zsp-artist-avatar{width:52px;height:52px;border-radius:50%;object-fit:cover;background:#222;flex-shrink:0}
.zsp-artist-info{flex:1;min-width:0}
.zsp-artist-name{color:#fff;font-size:15px;font-weight:600;margin:0 0 2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.zsp-artist-stats{color:rgba(255,255,255,.45);font-size:12px}
/* Follow Button */
.zsp-follow-btn{padding:7px 20px;border-radius:6px;font-size:13px;font-weight:700;border:none;cursor:pointer;transition:all .2s;white-space:nowrap}
.zsp-follow-btn.follow{background:#fe2c55;color:#fff}
.zsp-follow-btn.following{background:rgba(255,255,255,.12);color:#fff}
.zsp-follow-btn:active{transform:scale(.95)}
/* Artist Profile Header */
.zsp-artist-profile{padding:60px 20px 16px;text-align:center}
.zsp-artist-profile .zsp-artist-avatar{width:80px;height:80px;margin:0 auto 12px}
.zsp-artist-profile .zsp-artist-name{font-size:22px;margin-bottom:6px}
.zsp-artist-profile .zsp-artist-stats{font-size:14px;margin-bottom:14px}
@media(min-width:768px){.zsp-actions{right:24px;bottom:180px;gap:20px}.zsp-content{padding-bottom:40px}}
@media(max-width:480px){.zsp-nav{gap:2px}.zsp-tab{font-size:13px;padding:5px 10px}}