/* TAEON A&R Platform — Apple-inspired Design */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root{
    --bg:#f5f5f7;--bg2:#fff;--card:#fff;--hover:#f0f0f2;--surface:#e8e8ed;
    --pri:#0071e3;--pri-h:#0077ED;--acc:#34c759;--danger:#ff3b30;--info:#5856d6;--orange:#ff9500;
    --text:#1d1d1f;--sec:#86868b;--muted:#aeaeb2;
    --border:rgba(0,0,0,.08);--border-h:rgba(0,0,0,.15);
    --shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);
    --shadow-lg:0 4px 20px rgba(0,0,0,.08),0 1px 3px rgba(0,0,0,.05);
    --sans:'Inter',-apple-system,BlinkMacSystemFont,'SF Pro Display','Helvetica Neue',sans-serif;
    --mono:'SF Mono','Menlo',monospace;
    --radius:12px;--radius-sm:8px;--radius-lg:16px;
    --player-h:76px
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:14px}
body{font-family:var(--sans);background:var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
a{color:var(--pri);text-decoration:none}a:hover{text-decoration:underline}
input,select,textarea,button{font-family:inherit;font-size:inherit}
::selection{background:rgba(0,113,227,.15)}

/* Layout */
.app{display:flex;min-height:100vh;padding-bottom:var(--player-h)}
.side{width:260px;background:rgba(255,255,255,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-right:1px solid var(--border);position:fixed;top:0;left:0;bottom:0;z-index:100;display:flex;flex-direction:column;overflow-y:auto}
.side-head{padding:20px 20px 16px;display:flex;align-items:center;gap:12px}
.side-logo{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,#1d1d1f 0%,#48484a 100%);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;color:#fff;letter-spacing:-0.5px}
.side-brand{font-size:15px;font-weight:700;letter-spacing:-0.3px;color:var(--text)}
.side-brand small{display:block;font-size:10px;font-weight:500;color:var(--muted);letter-spacing:0.5px;margin-top:1px}
.side-nav{padding:4px 12px;flex:1}
.nav-label{padding:20px 8px 6px;font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:0.5px}
.nav-item{display:flex;align-items:center;gap:10px;padding:8px 12px;color:var(--sec);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s;border-radius:var(--radius-sm);margin-bottom:1px}
.nav-item:hover{color:var(--text);background:var(--hover)}
.nav-item.active{color:var(--pri);background:rgba(0,113,227,.08);font-weight:600}
.nav-item .ic{font-size:15px;width:20px;text-align:center}
.main{flex:1;margin-left:260px;padding:24px 32px;max-width:1200px}

/* Page Header */
.pg-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.pg-title{font-size:28px;font-weight:700;letter-spacing:-0.5px;color:var(--text)}
.pg-sub{font-size:13px;color:var(--muted);margin-top:2px}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border:none;border-radius:980px;font-weight:500;font-size:13px;cursor:pointer;transition:all .2s;letter-spacing:-0.1px}
.btn-pri{background:var(--pri);color:#fff}.btn-pri:hover{background:var(--pri-h)}
.btn-acc{background:var(--acc);color:#fff}
.btn-ghost{background:transparent;color:var(--pri);border:none}.btn-ghost:hover{background:rgba(0,113,227,.06)}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--border)}.btn-outline:hover{border-color:var(--border-h);background:var(--hover)}
.btn-sm{padding:5px 12px;font-size:12px}
.btn-lg{padding:12px 28px;font-size:15px;font-weight:600}

/* Cards */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow);transition:box-shadow .2s}
.card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.card-title{font-size:17px;font-weight:600;letter-spacing:-0.2px}
.hover-card{cursor:pointer;transition:all .2s}.hover-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-1px)}

/* Tables */
.tbl{width:100%;border-collapse:collapse}
.tbl th{text-align:left;padding:8px 14px;font-size:12px;font-weight:600;color:var(--muted);border-bottom:1px solid var(--border)}
.tbl td{padding:10px 14px;border-bottom:1px solid rgba(0,0,0,.04);font-size:13px}
.tbl tr:hover td{background:var(--hover)}

/* Forms */
.fg{margin-bottom:14px}
.fl{display:block;font-size:12px;font-weight:500;color:var(--sec);margin-bottom:5px}
.fi{width:100%;padding:10px 14px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:14px;transition:all .15s}
.fi:focus{outline:none;border-color:var(--pri);box-shadow:0 0 0 3px rgba(0,113,227,.12);background:#fff}
.fi::placeholder{color:var(--muted)}
.fsel{appearance:none;padding-right:32px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12'%3E%3Cpath fill='%23aeaeb2' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}

/* Track List */
.trk{display:flex;align-items:center;gap:12px;padding:10px 16px;border-radius:var(--radius-sm);cursor:pointer;transition:background .15s}
.trk:hover{background:var(--hover)}
.trk.playing{background:rgba(0,113,227,.06)}
.trk-num{width:24px;font-family:var(--mono);font-size:12px;color:var(--muted);text-align:center}
.trk.playing .trk-num{color:var(--pri)}
.trk-cover{width:40px;height:40px;border-radius:8px;background:var(--surface);overflow:hidden;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:15px}
.trk-info{flex:1;min-width:0}
.trk-title{font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:-0.1px}
.trk-artist{font-size:12px;color:var(--sec);margin-top:1px}
.trk-dur{font-family:var(--mono);font-size:12px;color:var(--muted)}
.trk-actions{display:flex;gap:2px;opacity:0;transition:opacity .15s}
.trk:hover .trk-actions{opacity:1}

/* Badges */
.badge{padding:3px 10px;border-radius:980px;font-size:11px;font-weight:500;letter-spacing:-0.1px}
.badge-pri{background:rgba(0,113,227,.1);color:var(--pri)}
.badge-acc{background:rgba(52,199,89,.1);color:var(--acc)}
.badge-danger{background:rgba(255,59,48,.1);color:var(--danger)}
.badge-muted{background:rgba(174,174,178,.15);color:var(--sec)}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-bottom:24px}
.stat{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.stat-label{font-size:11px;font-weight:500;color:var(--muted);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:8px}
.stat-val{font-size:28px;font-weight:700;letter-spacing:-1px;color:var(--text)}
.stat-val.pri{color:var(--pri)}.stat-val.acc{color:var(--acc)}

/* Icon Button */
.btn-icon{background:none;border:none;cursor:pointer;font-size:14px;padding:4px 6px;border-radius:6px;transition:background .15s;opacity:.5}
.btn-icon:hover{background:var(--hover);opacity:1}

/* Mini Player */
.mplayer{position:fixed;bottom:0;left:260px;right:300px;height:var(--player-h);background:rgba(255,255,255,.92);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-top:1px solid var(--border);display:flex;align-items:center;padding:0 24px;z-index:200;gap:20px}
.mplayer .mp-empty{color:var(--muted);font-size:13px;margin:0 auto}
.mp-info{display:flex;align-items:center;gap:12px;width:260px;flex-shrink:0}
.mp-cover{width:44px;height:44px;border-radius:8px;background:var(--surface);display:flex;align-items:center;justify-content:center;font-size:16px;box-shadow:0 2px 8px rgba(0,0,0,.1)}
.mp-ctrl{display:flex;flex-direction:column;align-items:center;gap:6px;flex:1}
.mp-btns{display:flex;align-items:center;gap:20px}
.mp-btn{background:none;border:none;color:var(--sec);font-size:18px;cursor:pointer;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .15s}
.mp-btn:hover{color:var(--text);background:var(--hover)}
.mp-btn.play{width:36px;height:36px;background:var(--text);color:#fff;border-radius:50%;font-size:14px}
.mp-btn.play:hover{transform:scale(1.06)}
.mp-prog{width:100%;display:flex;align-items:center;gap:10px}
.mp-bar{flex:1;height:4px;background:var(--surface);border-radius:2px;cursor:pointer;position:relative}
.mp-bar:hover{height:5px}
.mp-fill{height:100%;background:var(--pri);border-radius:2px;transition:width .1s linear}
.mp-time{font-family:var(--mono);font-size:11px;color:var(--muted);min-width:40px}
.mp-vol{display:flex;align-items:center;gap:8px;width:140px;flex-shrink:0}
.mp-vol input[type=range]{-webkit-appearance:none;appearance:none;height:4px;border-radius:2px;background:var(--surface);outline:none}
.mp-vol input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:12px;height:12px;border-radius:50%;background:var(--text);cursor:pointer}

/* Modal */
.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.3);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:500;opacity:0;pointer-events:none;transition:opacity .25s}
.modal-bg.on{opacity:1;pointer-events:all}
.modal{background:var(--card);border-radius:var(--radius-lg);padding:28px;width:90%;max-width:540px;max-height:85vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,.15),0 1px 3px rgba(0,0,0,.1);border:1px solid rgba(255,255,255,.5)}
.modal h2{font-size:20px;font-weight:700;margin-bottom:20px;letter-spacing:-0.3px}

/* Upload Zone */
.upzone{border:2px dashed var(--border);border-radius:var(--radius);padding:44px 24px;text-align:center;cursor:pointer;transition:all .2s;background:var(--bg)}
.upzone:hover,.upzone.drag{border-color:var(--pri);background:rgba(0,113,227,.03)}

/* Toast */
.toasts{position:fixed;top:20px;right:20px;z-index:1000;display:flex;flex-direction:column;gap:8px}
.toast{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:12px 18px;font-size:13px;min-width:280px;box-shadow:var(--shadow-lg);animation:toastIn .3s ease}
.toast.ok{border-left:3px solid var(--acc)}.toast.err{border-left:3px solid var(--danger)}
@keyframes toastIn{from{transform:translateY(-10px) scale(.97);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}

/* Scrollbar */
::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:rgba(0,0,0,.12);border-radius:3px}

/* Responsive */
@media(max-width:768px){.side{display:none}.main{margin-left:0;padding:16px}.stats{grid-template-columns:repeat(2,1fr)}.mp-info{width:140px}.mp-vol{display:none}}

/* ═══ Right Sidebar — Track Library ═══ */
.rsb{width:300px;background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-left:1px solid var(--border);position:fixed;top:0;right:0;bottom:0;z-index:90;display:flex;flex-direction:column;overflow:hidden;transition:transform .25s}
.rsb-head{padding:16px;border-bottom:1px solid var(--border);display:flex;flex-direction:column;gap:8px;flex-shrink:0}
.rsb-title{font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:space-between}
.rsb-search{width:100%;padding:7px 10px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:12px;color:var(--text)}
.rsb-search:focus{outline:none;border-color:var(--pri)}
.rsb-list{flex:1;overflow-y:auto;padding:4px 8px}
.rsb-trk{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:8px;cursor:grab;transition:background .12s;font-size:12px;border:1px solid transparent;margin-bottom:2px}
.rsb-trk:hover{background:var(--hover)}
.rsb-trk.dragging{opacity:.5;border:1px dashed var(--pri)}
.rsb-trk .rt-title{flex:1;min-width:0;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rsb-trk .rt-sub{font-size:10px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rsb-trk .rt-dur{font-family:var(--mono);font-size:10px;color:var(--muted);flex-shrink:0}
.rsb-trk .rt-play{background:none;border:none;cursor:pointer;font-size:12px;opacity:.4;transition:opacity .15s;flex-shrink:0}
.rsb-trk:hover .rt-play{opacity:1}
.rsb-foot{padding:10px 16px;border-top:1px solid var(--border);flex-shrink:0}
.rsb-upload{width:100%;padding:8px;background:var(--pri);color:#fff;border:none;border-radius:980px;font-size:12px;font-weight:600;cursor:pointer}
.rsb-upload:hover{background:var(--pri-h)}

/* Adjust main for 3 columns */
.main{margin-right:300px}

/* Drop zone indicator */
.drop-zone{border:2px dashed transparent;border-radius:var(--radius);transition:all .2s;min-height:40px}
.drop-zone.drag-over{border-color:var(--pri);background:rgba(0,113,227,.04)}
.drop-hint{display:none;padding:16px;text-align:center;color:var(--pri);font-size:13px;font-weight:500}
.drop-zone.drag-over .drop-hint{display:block}

/* Right sidebar toggle on mobile */
.rsb-toggle{display:none;position:fixed;right:16px;bottom:calc(var(--player-h) + 16px);z-index:95;width:44px;height:44px;border-radius:50%;background:var(--pri);color:#fff;border:none;font-size:18px;cursor:pointer;box-shadow:var(--shadow-lg)}

@media(max-width:1024px){
    .rsb{transform:translateX(100%)}
    .rsb.open{transform:translateX(0)}
    .main{margin-right:0}
    .mplayer{left:0;right:0}
    .rsb-toggle{display:flex;align-items:center;justify-content:center}
}
@media(max-width:768px){
    .side{display:none}.main{margin-left:0;padding:16px}
    .mplayer{left:0;right:0}
}

/* Bulk action bar */
.bulk-bar{animation:slideDown .2s ease}
@keyframes slideDown{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}

/* Sidebar delete button */
.rt-del{background:none;border:none;cursor:pointer;font-size:11px;opacity:0;transition:opacity .15s;flex-shrink:0;padding:2px 4px;border-radius:4px}
.rsb-trk:hover .rt-del{opacity:.4}
.rt-del:hover{opacity:1!important;background:rgba(255,59,48,.1)}