:root{
  --bg:#08080d; --bg2:#0d0d15; --card:#12121c; --card2:#171725; --line:#26263a;
  --text:#f4f4fb; --muted:#9a9ab0; --accent:#8b5cf6; --accent2:#ec4899; --ok:#22c55e; --err:#ef4444;
  --radius:18px; --shadow:0 20px 60px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:radial-gradient(1200px 800px at 80% -10%,rgba(139,92,246,.18),transparent 60%),radial-gradient(900px 700px at -10% 110%,rgba(236,72,153,.12),transparent 60%),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer}
.hidden{display:none!important}
#app{min-height:100vh}

/* Splash */
.splash{position:fixed;inset:0;display:grid;place-items:center;background:var(--bg);z-index:100;transition:opacity .4s}
.splash.hide{opacity:0;pointer-events:none}
.splash-mark,.brand-mark{width:54px;height:54px;border-radius:16px;background:linear-gradient(135deg,var(--accent),var(--accent2));position:relative;overflow:hidden;box-shadow:0 12px 40px rgba(139,92,246,.35)}
.splash-mark::before,.brand-mark::before{content:"";position:absolute;inset:12px;border-radius:10px;background:rgba(255,255,255,.16);border:2px solid rgba(255,255,255,.55)}
.splash-title,.auth-brand h1{font-size:28px;margin:16px 0 4px;letter-spacing:-.02em}
.splash-sub,.auth-brand p{color:var(--muted);margin:0}
.brand-mark.small{width:32px;height:32px;border-radius:10px}
.brand-mark.small::before{inset:8px;border-radius:6px}

/* Auth */
.auth-view{min-height:100vh;display:grid;place-items:center;padding:24px}
.auth-card{width:min(430px,100%);background:rgba(18,18,28,.86);border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:var(--shadow);backdrop-filter:blur(12px)}
.auth-brand{text-align:center;margin-bottom:22px}
.auth-brand .brand-mark{margin:0 auto 14px}
.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;background:#0b0b13;border:1px solid var(--line);padding:5px;border-radius:14px;margin-bottom:18px}
.auth-tabs button{border:0;background:transparent;color:var(--muted);padding:10px;border-radius:10px}
.auth-tabs button.active{background:#221d35;color:#fff}
.auth-form{display:grid;gap:12px}
.auth-form label,.composer-options label,.advanced-grid label{display:grid;gap:6px;color:var(--muted);font-size:13px}
input,textarea,select{width:100%;background:#0b0b13;border:1px solid var(--line);border-radius:12px;padding:12px 14px;outline:none;transition:.15s}
input:focus,textarea:focus,select:focus{border-color:rgba(139,92,246,.7);box-shadow:0 0 0 3px rgba(139,92,246,.15)}
textarea{resize:vertical;line-height:1.5}
.primary{border:0;border-radius:12px;padding:12px 18px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;font-weight:700;box-shadow:0 10px 30px rgba(139,92,246,.3)}
.primary:hover{filter:brightness(1.08)}
.primary.big{padding:13px 28px;font-size:16px}
.primary:disabled,.secondary:disabled{opacity:.55;cursor:not-allowed}
.secondary{border:1px solid var(--line);background:#1a1a28;color:var(--text);border-radius:12px;padding:10px 14px}
.ghost{border:1px solid var(--line);background:transparent;color:var(--muted);border-radius:10px;padding:8px 12px}
.ghost:hover{color:#fff;border-color:#3a3a55}
.form-error{min-height:20px;color:var(--err);font-size:13px;margin-top:8px}

/* Studio layout */
.studio{display:grid;grid-template-columns:260px 1fr;min-height:100vh}
.sidebar{position:sticky;top:0;height:100vh;border-right:1px solid var(--line);background:rgba(10,10,16,.75);backdrop-filter:blur(10px);padding:18px;display:flex;flex-direction:column;gap:18px}
.sidebar-logo{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.02em;cursor:pointer}
.sidebar nav{display:grid;gap:6px}
.nav-item{display:flex;align-items:center;gap:12px;border:0;background:transparent;color:var(--muted);padding:12px 14px;border-radius:12px;text-align:left;font-weight:600}
.nav-item span{width:22px;text-align:center}
.nav-item:hover{background:#15151f;color:#fff}
.nav-item.active{background:linear-gradient(135deg,rgba(139,92,246,.22),rgba(236,72,153,.16));color:#fff}
.sidebar-spacer{flex:1}
.side-user{display:flex;align-items:center;gap:10px;border-top:1px solid var(--line);padding-top:14px}
.avatar{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),var(--accent2));font-weight:800}
.side-user div{min-width:0;flex:1}
.side-user strong,.side-user small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-user small{color:var(--muted);font-size:12px}
.side-user button{border:0;background:transparent;color:var(--muted);font-size:20px}
.side-user button:hover{color:#fff}
.main{padding:28px clamp(16px,4vw,48px) 120px;min-width:0}
.topbar{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:22px}
.topbar h2{margin:0;font-size:30px;letter-spacing:-.03em}
.topbar p{margin:4px 0 0;color:var(--muted)}
.top-actions .ghost{font-size:18px}
.view{display:none}
.view.active{display:block}

/* Composer */
.composer{background:linear-gradient(180deg,rgba(23,23,37,.92),rgba(18,18,28,.92));border:1px solid var(--line);border-radius:24px;padding:18px;box-shadow:var(--shadow)}
.mode-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.mode-tab{border:1px solid var(--line);background:#0b0b13;color:var(--muted);border-radius:999px;padding:9px 16px;font-weight:700}
.mode-tab.active{background:#fff;color:#08080d;border-color:#fff}
.mode-panel{display:grid;gap:12px}
.mode-panel textarea{min-height:130px}
#custom-lyrics{min-height:230px}
.composer-row{display:grid;grid-template-columns:1fr auto;gap:10px}
.composer-row input{min-width:0}
.composer-options{display:flex;gap:14px;align-items:end;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:14px}
.composer-options label{min-width:130px}
.switch{display:flex!important;align-items:center;gap:10px;grid-template-columns:none!important;align-self:center}
.switch input{display:none}
.switch span{width:42px;height:24px;border-radius:999px;background:#26263a;position:relative;transition:.2s}
.switch span::after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;transition:.2s}
.switch input:checked+span{background:linear-gradient(135deg,var(--accent),var(--accent2))}
.switch input:checked+span::after{transform:translateX(18px)}
.advanced{flex:1;min-width:260px}
.advanced summary{cursor:pointer;color:var(--muted);font-size:13px;padding:8px 0}
.advanced-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding-top:8px}
.composer-actions{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-top:14px}
.composer-status{color:var(--muted);font-size:13px;min-height:20px}
.ai-preview{border:1px solid rgba(139,92,246,.4);background:rgba(139,92,246,.1);border-radius:14px;padding:12px;color:#d8ccff;font-size:13px;white-space:pre-wrap}

/* Sections */
.section{margin-top:34px}
.section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.section-head h3{margin:0;font-size:18px}
.jobs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.job-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px;display:grid;gap:10px}
.job-card .job-title{font-weight:800}
.job-card .job-meta{color:var(--muted);font-size:13px}
.progress{height:8px;border-radius:99px;background:#20202f;overflow:hidden}
.progress i{display:block;height:100%;width:35%;background:linear-gradient(90deg,var(--accent),var(--accent2));animation:slide 1.2s infinite}
@keyframes slide{0%{transform:translateX(-100%)}100%{transform:translateX(280%)}}
.job-actions{display:flex;gap:8px}

/* Songs */
.songs-toolbar{display:flex;gap:10px;margin-bottom:18px;max-width:650px}
.songs-toolbar input{flex:1}
.songs-toolbar select{width:150px}
.songs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:18px}
.song-card{background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden;transition:.18s;position:relative}
.song-card:hover{transform:translateY(-3px);border-color:#3a3a5c;box-shadow:0 18px 45px rgba(0,0,0,.35)}
.song-cover{aspect-ratio:1/1;display:grid;place-items:center;font-size:44px;color:#fff;position:relative}
.song-cover .play-fab{position:absolute;right:12px;bottom:12px;width:46px;height:46px;border-radius:50%;border:0;background:rgba(0,0,0,.45);color:#fff;font-size:18px;backdrop-filter:blur(8px)}
.song-cover .fav{position:absolute;left:12px;top:12px;border:0;background:rgba(0,0,0,.35);color:#fff;border-radius:99px;padding:6px 10px;font-size:13px}
.song-body{padding:13px 14px 15px}
.song-title{font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.song-sub{color:var(--muted);font-size:12px;margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.song-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.tag{font-size:11px;color:#cfc4ff;background:rgba(139,92,246,.15);border:1px solid rgba(139,92,246,.25);padding:4px 8px;border-radius:99px}
.song-actions{display:flex;justify-content:space-between;align-items:center;margin-top:12px}
.song-actions .mini{border:0;background:#20202f;color:var(--muted);border-radius:8px;padding:7px 10px;font-size:12px}
.song-actions .mini:hover{color:#fff;background:#2b2b40}
.empty{border:1px dashed var(--line);border-radius:20px;padding:44px;text-align:center;color:var(--muted)}

/* Jobs list */
.jobs-list{display:grid;gap:10px;max-width:900px}
.job-row{display:grid;grid-template-columns:1fr auto auto;gap:12px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px}
.job-row .t{font-weight:700}
.job-row .m{color:var(--muted);font-size:12px}
.badge{font-size:11px;padding:5px 9px;border-radius:99px;background:#20202f;color:var(--muted)}
.badge.completed{background:rgba(34,197,94,.15);color:#86efac}
.badge.failed{background:rgba(239,68,68,.15);color:#fca5a5}
.badge.processing,.badge.submitted,.badge.queued{background:rgba(139,92,246,.15);color:#c4b5fd}

/* Player */
.player{position:fixed;left:0;right:0;bottom:0;height:84px;background:rgba(12,12,19,.9);backdrop-filter:blur(14px);border-top:1px solid var(--line);display:grid;grid-template-columns:280px 180px 1fr 100px 120px;gap:14px;align-items:center;padding:0 22px;z-index:50}
.player-cover{width:52px;height:52px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),var(--accent2));font-size:20px}
.player-meta{min-width:0}
.player-meta strong,.player-meta small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.player-meta small{color:var(--muted)}
.player-controls{display:flex;align-items:center;gap:12px}
.round{width:42px;height:42px;border-radius:50%;border:0;background:#fff;color:#08080d;font-size:15px}
#player-time,#player-duration{color:var(--muted);font-size:12px;min-width:38px;text-align:center}
#player-seek,#player-volume{width:100%;accent-color:var(--accent)}
#player-volume{max-width:110px}
#toasts{position:fixed;right:18px;bottom:100px;display:grid;gap:8px;z-index:200}
.toast{background:#1b1b29;border:1px solid var(--line);border-radius:12px;padding:11px 14px;box-shadow:var(--shadow);font-size:13px;max-width:340px}
.toast.error{border-color:rgba(239,68,68,.5);color:#fecaca}
.toast.ok{border-color:rgba(34,197,94,.4);color:#bbf7d0}

@media(max-width:900px){
  .studio{grid-template-columns:1fr}
  .sidebar{position:fixed;left:0;top:0;bottom:0;width:260px;z-index:80;transform:translateX(-105%);transition:.2s}
  .sidebar.open{transform:none}
  .main{padding:20px 14px 130px}
  .composer-row,.advanced-grid{grid-template-columns:1fr}
  .composer-actions{display:grid}
  .primary.big{width:100%}
  .player{grid-template-columns:1fr auto;grid-template-rows:auto auto;padding:10px 14px;height:auto}
  .player-cover{display:none}
  .player-meta{grid-column:1/-1}
  .player-controls{grid-column:1/-1;justify-content:center}
  .player-seek-wrap{display:none}
}