:root {
  color-scheme: dark;
  --bg: #090b0f;
  --panel: #11151b;
  --panel-2: #161b22;
  --line: rgba(255,255,255,.09);
  --text: #f7f8fa;
  --muted: #9aa4b2;
  --accent: #8ae66e;
  --accent-2: #b7ff9f;
  --danger: #ff7272;
  --shadow: 0 18px 60px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at 20% -10%, rgba(138,230,110,.12), transparent 34%),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Tahoma, sans-serif;
}

body { padding-bottom: 150px; }

button, input { font: inherit; }

button { -webkit-tap-highlight-color: transparent; }

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  min-height: 98px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.eyebrow {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: .16em;
  font-weight: 700;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  margin-bottom: 0;
  font-size: clamp(26px, 4vw, 38px);
  letter-spacing: -.04em;
}

h1 span {
  color: var(--accent);
  font-size: .45em;
  letter-spacing: .06em;
  vertical-align: middle;
}

.server-dot {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 13px;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: #7b8491;
  box-shadow: 0 0 0 4px rgba(123,132,145,.12);
}

.server-dot.online .dot {
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(138,230,110,.13);
}

.hero-panel,
.network-panel,
.library-section {
  border: 1px solid var(--line);
  background: rgba(17,21,27,.88);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero-panel {
  border-radius: 28px;
  padding: clamp(22px, 4vw, 42px);
}

.hero-copy h2 {
  margin: 8px 0 10px;
  font-size: clamp(27px, 5vw, 46px);
  letter-spacing: -.045em;
}

.hero-copy p {
  color: var(--muted);
  line-height: 1.7;
  max-width: 680px;
}

.upload-card {
  margin-top: 26px;
  min-height: 150px;
  border: 1px dashed rgba(138,230,110,.4);
  border-radius: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  cursor: pointer;
  background: rgba(138,230,110,.035);
  transition: .18s ease;
}

.upload-card:hover,
.upload-card.dragover {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: rgba(138,230,110,.07);
}

.upload-icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: var(--accent);
  color: #0a1208;
  font-size: 34px;
  font-weight: 300;
}

.upload-card strong { display: block; font-size: 18px; }
.upload-card small { display: block; color: var(--muted); margin-top: 5px; }

.upload-progress {
  margin-top: 18px;
  border-radius: 18px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  padding: 16px 18px;
}

.progress-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
}

.progress-head span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--muted);
}

.progress-track {
  margin-top: 11px;
  height: 8px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255,255,255,.06);
}

.progress-bar {
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: var(--accent);
  transition: width .12s linear;
}

.progress-message {
  min-height: 17px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}

.network-panel {
  margin-top: 18px;
  border-radius: 22px;
  padding: 19px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.network-panel h3 {
  margin: 5px 0 0;
  font-size: 18px;
}

.url-button {
  min-width: 300px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #0b0e12;
  color: var(--text);
  padding: 11px 16px;
  text-align: left;
  cursor: pointer;
}

.url-button span {
  display: block;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.url-button small {
  color: var(--muted);
  font-size: 11px;
}

.library-section {
  margin-top: 18px;
  padding: clamp(18px, 3vw, 28px);
  border-radius: 24px;
}

.section-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 4px 2px 18px;
}

.section-title h2 {
  margin: 5px 0 0;
  font-size: 26px;
  letter-spacing: -.035em;
}

.secondary-btn,
.delete-btn,
.play-btn,
.close-player {
  border: 0;
  cursor: pointer;
}

.secondary-btn {
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--panel-2);
  padding: 9px 14px;
  border-radius: 11px;
}

.song-list {
  display: grid;
  gap: 10px;
}

.song-card {
  min-height: 86px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 15px;
  padding: 13px;
  background: #0d1015;
  border: 1px solid var(--line);
  border-radius: 18px;
}

.play-btn {
  width: 48px;
  height: 48px;
  border-radius: 15px;
  background: var(--accent);
  color: #071006;
  font-size: 19px;
  font-weight: 800;
}

.song-info { min-width: 0; }

.song-info strong {
  display: block;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-size: 16px;
}

.song-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 10px;
  color: var(--muted);
  font-size: 12px;
  margin-top: 6px;
}

.status-pill {
  color: var(--accent-2);
  border: 1px solid rgba(138,230,110,.22);
  background: rgba(138,230,110,.07);
  padding: 5px 8px;
  border-radius: 999px;
  white-space: nowrap;
  font-size: 11px;
}

.delete-btn {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  font-size: 16px;
}

.delete-btn:hover {
  color: var(--danger);
  border-color: rgba(255,114,114,.25);
}

.empty-state {
  padding: 50px 20px;
  text-align: center;
  color: var(--muted);
}

.empty-symbol {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  display: grid;
  place-items: center;
  border-radius: 20px;
  background: var(--panel-2);
  color: var(--accent);
  font-size: 28px;
}

.empty-state h3 { color: var(--text); margin-bottom: 6px; }
.empty-state p { margin-bottom: 0; }

.player-dock {
  position: fixed;
  z-index: 20;
  left: 50%;
  bottom: max(12px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  width: min(1000px, calc(100% - 24px));
  min-height: 96px;
  display: grid;
  grid-template-columns: minmax(200px, 1fr) minmax(320px, 1.6fr) 42px;
  align-items: center;
  gap: 18px;
  padding: 13px 15px;
  background: rgba(18,22,28,.96);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 20px 80px rgba(0,0,0,.55);
  backdrop-filter: blur(18px);
}

.now-playing {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.mini-cover {
  width: 54px;
  height: 54px;
  flex: 0 0 auto;
  border-radius: 15px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: #071006;
  font-size: 22px;
}

.now-copy { min-width: 0; }
.now-copy small { color: var(--muted); font-size: 10px; }
.now-copy strong {
  display: block;
  margin-top: 3px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

audio {
  width: 100%;
  min-width: 0;
}

.close-player {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  color: var(--muted);
  background: var(--panel-2);
  font-size: 22px;
}

.toast {
  position: fixed;
  z-index: 30;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  max-width: min(500px, calc(100% - 30px));
  padding: 11px 15px;
  border-radius: 12px;
  background: #fff;
  color: #111;
  box-shadow: var(--shadow);
  font-size: 13px;
  font-weight: 600;
}

.hidden { display: none !important; }

@media (max-width: 720px) {
  body { padding-bottom: 210px; }
  .app-shell { width: min(100% - 20px, 1180px); }
  .topbar { min-height: 82px; }
  .server-dot span:last-child { display: none; }

  .hero-panel { border-radius: 22px; }
  .upload-card {
    min-height: 130px;
    justify-content: flex-start;
    padding: 22px;
  }

  .network-panel {
    align-items: stretch;
    flex-direction: column;
  }

  .url-button { min-width: 0; width: 100%; }

  .song-card {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .status-pill { display: none; }
  .song-meta { gap: 5px 8px; }

  .player-dock {
    grid-template-columns: 1fr auto;
    gap: 10px 12px;
    padding: 12px;
  }

  .now-playing { grid-column: 1 / 2; }
  .close-player { grid-column: 2 / 3; grid-row: 1; }
  audio { grid-column: 1 / 3; }
}

.engine-badge{font-size:10px;letter-spacing:.08em;font-weight:800;padding:6px 9px;border-radius:999px;color:var(--muted);border:1px solid var(--line)}
.engine-badge.ready{color:var(--accent-2);border-color:rgba(138,230,110,.22);background:rgba(138,230,110,.06)}
.engine-setup{margin-bottom:18px;padding:18px 22px;border:1px solid rgba(255,193,91,.26);border-radius:18px;background:rgba(255,193,91,.06)}
.engine-setup h3{margin:5px 0 4px}.engine-setup p{margin:0;color:var(--muted)}
.song-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.separate-btn,.stems-btn{border:0;cursor:pointer;min-height:38px;padding:0 12px;border-radius:11px;font-weight:800;font-size:12px}.separate-btn{background:var(--accent);color:#071006}.separate-btn:disabled{opacity:.42;cursor:not-allowed}.stems-btn{color:var(--accent-2);background:rgba(138,230,110,.08);border:1px solid rgba(138,230,110,.22)}
.job-panel{grid-column:2/-1;padding:0 0 4px}.job-row{display:flex;justify-content:space-between;gap:14px;color:var(--muted);font-size:11px;margin-bottom:6px}.job-progress-track{height:5px;border-radius:999px;overflow:hidden;background:rgba(255,255,255,.06)}.job-progress-bar{height:100%;border-radius:inherit;background:var(--accent);transition:width .3s ease}.job-error{margin-top:7px;color:#ff9a9a;font-size:11px;white-space:pre-wrap}
.stem-modal{position:fixed;z-index:40;inset:0;background:rgba(0,0,0,.72);backdrop-filter:blur(12px);display:grid;place-items:center;padding:20px}.stem-modal-card{position:relative;width:min(720px,100%);max-height:min(780px,calc(100vh - 40px));overflow:auto;background:#11151b;border:1px solid var(--line);border-radius:24px;padding:26px;box-shadow:var(--shadow)}.modal-close{position:absolute;top:14px;right:14px;width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:var(--panel-2);color:var(--muted);cursor:pointer;font-size:21px}.muted{color:var(--muted);line-height:1.6}.stem-tracks{display:grid;gap:10px;margin-top:18px}.stem-track{padding:13px 14px;border-radius:15px;background:#0c0f13;border:1px solid var(--line)}.stem-track-head{display:flex;justify-content:space-between;gap:14px;margin-bottom:9px}.stem-track strong{text-transform:capitalize}.stem-track small{color:var(--muted)}.stem-track audio{width:100%}
@media(max-width:820px){.song-card{grid-template-columns:auto minmax(0,1fr) auto}.song-actions{grid-column:2/4}.job-panel{grid-column:2/4}}
@media(max-width:720px){.engine-badge{display:none}.stem-modal{padding:10px}.stem-modal-card{max-height:calc(100vh - 20px);border-radius:20px;padding:21px}}

.engine-detail{max-width:380px;color:var(--muted);font-size:10px;line-height:1.35;text-align:right}
.engine-detail.ready{color:var(--accent-2)}
@media(max-width:720px){.engine-detail{display:none}}


/* ===== V0.3 PRO STUDIO ===== */
:root{
  --studio-bg:#06080b;
  --studio-panel:#0e1217;
  --studio-panel2:#131820;
  --studio-line:rgba(255,255,255,.09);
  --cyan:#35d7e4;
  --cyan2:#70eef4;
}
.header-right{display:flex;align-items:center;gap:24px}
.compact-hero{display:grid;grid-template-columns:1fr minmax(280px,420px);align-items:center;gap:30px}
.compact-hero .hero-copy h2{margin-bottom:8px}
.compact-upload{margin:0;min-height:108px}
.compact-hero .upload-progress{grid-column:1/-1;margin-top:0}
.song-card{grid-template-columns:auto minmax(0,1fr) auto auto}
.studio-btn{border:0;cursor:pointer;min-height:38px;padding:0 14px;border-radius:11px;font-weight:800;font-size:12px;background:var(--accent);color:#071006}
.studio-view{position:fixed;z-index:100;inset:0;background:var(--studio-bg);color:#f7f8fa;display:grid;grid-template-rows:76px minmax(0,1fr) 104px;overflow:hidden}
.studio-header{display:grid;grid-template-columns:48px minmax(260px,1fr) auto;align-items:center;gap:14px;padding:12px 22px;border-bottom:1px solid var(--studio-line);background:#090c10}
.icon-btn{width:42px;height:42px;border-radius:12px;border:1px solid var(--studio-line);background:#11161d;color:#fff;font-size:23px;cursor:pointer}
.studio-song-title{display:flex;align-items:center;gap:13px;min-width:0}
.track-cover{width:46px;height:46px;border-radius:12px;background:#1a2028;display:grid;place-items:center;color:var(--cyan);font-size:21px;flex:0 0 auto}
.studio-song-title>div:last-child{min-width:0}
.studio-song-title strong{display:block;font-size:18px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.studio-song-title small{display:block;color:#73808d;margin-top:3px;font-size:9px;letter-spacing:.13em}
.studio-meta{display:flex;gap:8px;align-items:center}
.meta-chip,.meta-select{height:40px;border-radius:10px;border:1px solid var(--studio-line);background:#171b20;color:#fff;padding:0 14px;font-weight:750}
.meta-chip{cursor:pointer}
.meta-select{outline:none}
.studio-body{min-height:0;display:grid;grid-template-columns:78px minmax(0,1fr);overflow:hidden}
.studio-sidebar{border-right:1px solid var(--studio-line);background:#0b0e12;display:flex;flex-direction:column;align-items:center;padding:14px 8px;gap:8px}
.side-logo{width:42px;height:42px;border-radius:13px;background:var(--cyan);color:#071012;display:grid;place-items:center;font-weight:950;margin-bottom:10px}
.side-tab{width:60px;min-height:58px;border:0;border-radius:12px;background:transparent;color:#65717c;cursor:pointer;font-size:20px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px}
.side-tab span{font-size:9px}
.side-tab.active{background:#171d24;color:var(--cyan2)}
.side-spacer{flex:1}
.gpu-mini{font-size:8px;color:#65717c;text-align:center;line-height:1.35}
.studio-main{min-width:0;min-height:0;overflow:auto;background:radial-gradient(circle at 50% -20%,rgba(53,215,228,.055),transparent 34%),#07090c}
.studio-tab-panel{padding:16px 20px 22px;min-width:960px}
.timeline-ruler{height:34px;margin-left:245px;border-bottom:1px solid var(--studio-line);position:relative;color:#5e6873;font-size:9px}
.ruler-mark{position:absolute;bottom:6px;transform:translateX(-50%)}
.track-rows{display:grid;gap:5px;margin-top:8px}
.mixer-row{display:grid;grid-template-columns:230px minmax(620px,1fr);min-height:82px;border-radius:11px;overflow:hidden}
.track-controls{background:#0c1014;border:1px solid var(--studio-line);border-right:0;padding:11px 14px;display:flex;flex-direction:column;justify-content:center;gap:10px}
.track-top{display:flex;align-items:center;gap:7px}
.track-top strong{margin-left:4px;font-size:13px;text-transform:capitalize}
.ms-btn{width:25px;height:23px;padding:0;border:1px solid var(--studio-line);border-radius:5px;background:#1b2026;color:#9aa4ad;font-size:10px;font-weight:800;cursor:pointer}
.ms-btn.muted{background:#efb532;color:#080808;border-color:#efb532}
.ms-btn.soloed{background:var(--cyan);color:#061011;border-color:var(--cyan)}
.volume-slider{width:100%;accent-color:var(--cyan);height:3px}
.wave-lane{position:relative;background:#1caec0;border:1px solid rgba(255,255,255,.06);overflow:hidden;cursor:pointer}
.mixer-row:nth-child(2) .wave-lane{background:#20bed0}
.mixer-row:nth-child(3) .wave-lane{background:#28c9d7}
.mixer-row:nth-child(4) .wave-lane{background:#44d5df}
.mixer-row:nth-child(5) .wave-lane{background:#65dfe6}
.mixer-row:nth-child(6) .wave-lane{background:#83e7eb}
.wave-lane canvas{position:absolute;inset:0;width:100%;height:100%}
.wave-playhead{position:absolute;z-index:3;top:0;bottom:0;width:2px;background:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.18);pointer-events:none}
.wave-shade{position:absolute;z-index:2;top:0;bottom:0;right:0;background:rgba(0,0,0,.22);pointer-events:none}
.metronome-row{display:grid;grid-template-columns:230px minmax(620px,1fr);min-height:72px;margin-top:5px}
.metro-lane{border:1px solid var(--studio-line);background:repeating-linear-gradient(90deg,#151a20 0,#151a20 2px,#0d1116 2px,#0d1116 6px);display:flex;align-items:center;gap:18px;padding:0 22px;color:#68737e}
.metro-dots{display:flex;gap:10px}
.metro-dots i{width:10px;height:10px;border-radius:50%;background:#2e3741}
.metro-dots i.active{background:var(--cyan);box-shadow:0 0 14px rgba(53,215,228,.7)}
.transport{display:grid;grid-template-columns:1fr minmax(500px,700px) 1fr;align-items:center;gap:18px;padding:10px 24px max(10px,env(safe-area-inset-bottom));background:#090c10;border-top:1px solid var(--studio-line)}
.transport-left,.transport-right{display:flex;align-items:center;gap:8px}
.transport-right{justify-content:flex-end;color:#697581;font-size:11px}
.transport-center{display:grid;gap:8px}
.transport-buttons{display:flex;justify-content:center;align-items:center;gap:16px}
.transport-buttons button,.transport-small{border:1px solid var(--studio-line);background:#151a20;color:#fff;border-radius:9px;cursor:pointer}
.transport-buttons button{width:42px;height:36px}
.transport-buttons .master-play{width:50px;height:44px;border-radius:50%;background:#fff;color:#050608;font-size:17px}
.transport-small{height:32px;padding:0 11px;font-size:10px;font-weight:800}
.transport-small.active{background:var(--cyan);color:#061012;border-color:var(--cyan)}
.master-time{display:grid;grid-template-columns:44px 1fr 44px;align-items:center;gap:9px;font-size:10px;color:#84909b}
#masterSeek{width:100%;accent-color:#fff}
.audio-pool{display:none}
.studio-prepare{position:absolute;z-index:120;inset:76px 0 104px;background:rgba(4,6,9,.88);backdrop-filter:blur(16px);display:grid;place-items:center}
.prepare-card{width:min(520px,calc(100% - 30px));text-align:center;padding:34px;border:1px solid var(--studio-line);border-radius:24px;background:#0e1217}
.spinner{width:42px;height:42px;border:3px solid #222b34;border-top-color:var(--cyan);border-radius:50%;margin:0 auto 18px;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.prepare-card h2{margin:7px 0 14px}
.prepare-progress{height:8px;border-radius:99px;background:#20262d;overflow:hidden}
#prepareBar{height:100%;width:0;background:var(--cyan);transition:width .3s}
.prepare-card>strong{display:block;margin-top:8px;color:var(--cyan)}
.prepare-card p{color:#73808d;font-size:12px;margin:12px 0 0}
.studio-error{position:absolute;z-index:130;top:90px;left:50%;transform:translateX(-50%);max-width:700px;padding:14px 18px;background:#3a1518;border:1px solid #8d343c;border-radius:12px;color:#ffdadd;white-space:pre-wrap}
.chords-head{display:flex;align-items:end;justify-content:space-between;border-bottom:1px solid var(--studio-line);padding:10px 8px 18px}
.chords-head h2{margin:6px 0 0}
.chords-head>span{color:#697581;font-size:11px}
.chord-stage{min-height:320px;display:flex;align-items:center;justify-content:center;gap:24px;padding:30px 20px}
.chord-card{width:150px;min-height:180px;border:1px solid var(--studio-line);background:#11161c;border-radius:18px;display:grid;place-items:center;padding:16px;color:#87929c;transition:.2s}
.chord-card.current{width:190px;min-height:230px;background:#151b22;color:#fff;border-color:#3f4b56;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.chord-name{font-size:43px;font-weight:500}
.chord-card:not(.current) .chord-name{font-size:29px}
.chord-time{font-size:10px;color:#68747f}
.chord-timeline{display:flex;gap:5px;overflow-x:auto;padding:12px 8px 30px}
.chord-pill{flex:0 0 auto;border:1px solid var(--studio-line);border-radius:9px;background:#10151a;color:#9aa5ae;padding:8px 11px;cursor:pointer}
.chord-pill.active{background:#fff;color:#090a0c}
.hidden{display:none!important}
@media(max-width:900px){
  .studio-view{grid-template-rows:70px minmax(0,1fr) 118px}
  .studio-header{grid-template-columns:42px 1fr}.studio-meta{grid-column:1/-1;justify-content:flex-end;margin-top:-7px}.studio-body{grid-template-columns:58px minmax(0,1fr)}
  .studio-sidebar{padding-left:3px;padding-right:3px}.side-tab{width:50px}
  .studio-tab-panel{min-width:860px;padding:12px}
  .transport{grid-template-columns:1fr}.transport-left,.transport-right{display:none}
  .compact-hero{grid-template-columns:1fr}.compact-upload{margin-top:0}
}

/* ===== V0.4 SUPER APP ===== */
body{background:radial-gradient(circle at 18% -10%,rgba(52,221,233,.09),transparent 30%),radial-gradient(circle at 82% 0,rgba(125,95,255,.08),transparent 26%),#07090d}.super-topbar{min-height:104px}.super-topbar h1 span{font-size:.38em;background:linear-gradient(90deg,#6df2f7,#91ff9d);-webkit-background-clip:text;color:transparent}.super-hero{border:1px solid var(--line);border-radius:28px;background:linear-gradient(135deg,rgba(19,25,32,.97),rgba(11,15,20,.97));box-shadow:var(--shadow);padding:34px}.super-hero h2{font-size:clamp(32px,5vw,54px);letter-spacing:-.05em;margin:7px 0 10px}.super-hero p{color:var(--muted);max-width:760px;line-height:1.7}.import-grid{display:grid;grid-template-columns:.78fr 1.22fr;gap:14px;margin-top:24px}.import-card{min-height:118px;border:1px solid rgba(255,255,255,.095);border-radius:20px;background:#0b0f14;display:flex;align-items:center;gap:15px;padding:20px;transition:.2s}.import-card:hover{border-color:rgba(53,215,228,.36);transform:translateY(-1px)}.import-card>b{width:54px;height:54px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(145deg,#59eef4,#74ffae);color:#061012;font-size:26px;flex:0 0 auto}.file-card{cursor:pointer}.import-card strong{display:block;font-size:16px}.import-card small{color:#7f8b96;display:block;margin-top:5px}.youtube-box{min-width:0;flex:1}.url-row{display:flex;gap:8px;margin-top:9px}.url-row input{min-width:0;flex:1;height:42px;border:1px solid var(--line);border-radius:11px;background:#080b0f;color:#fff;padding:0 13px;outline:none}.url-row input:focus{border-color:#35d7e4;box-shadow:0 0 0 3px rgba(53,215,228,.08)}.url-row button{border:0;border-radius:11px;padding:0 17px;background:#35d7e4;color:#061012;font-weight:900;cursor:pointer}.import-progress{margin-top:14px;border:1px solid var(--line);border-radius:14px;background:#0b0f14;padding:13px 15px}.import-progress>div:first-child{display:flex;justify-content:space-between;color:#87939e;font-size:12px}.super-network{margin-top:16px}.song-card{background:linear-gradient(90deg,#0d1116,#0b0e12)}.studio-btn{background:linear-gradient(90deg,#51eaf2,#79ffac);box-shadow:0 6px 20px rgba(53,215,228,.12)}
.super-studio-header{background:rgba(7,10,14,.94);backdrop-filter:blur(20px);box-shadow:0 1px 0 rgba(255,255,255,.05)}.accent-chip{border-color:rgba(53,215,228,.28);color:#72edf3}.accent-chip.on{background:#35d7e4;color:#061012}.tempo-box{height:40px;display:flex;align-items:center;gap:8px;border:1px solid var(--studio-line);border-radius:10px;background:#151a20;padding:0 11px}.tempo-box span{font-size:8px;color:#75808b;letter-spacing:.1em}.tempo-box input{width:82px;accent-color:#35d7e4}.tempo-box b{font-size:11px;min-width:34px}.super-transport{background:rgba(8,11,15,.97);backdrop-filter:blur(18px)}.shortcuts{display:block;margin-left:12px;color:#4e5964;font-size:8px}.floating-panel{position:absolute;z-index:160;top:86px;right:22px;width:330px;border:1px solid rgba(255,255,255,.1);border-radius:19px;background:rgba(15,20,26,.98);box-shadow:0 28px 90px rgba(0,0,0,.52);backdrop-filter:blur(24px);padding:17px}.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.panel-head small{display:block;color:#68747f;font-size:8px;letter-spacing:.15em}.panel-head strong{display:block;margin-top:3px;font-size:18px}.panel-head button{width:34px;height:34px;border-radius:10px;border:1px solid var(--studio-line);background:#191f26;color:#85909a;cursor:pointer}.floating-panel label{display:block;color:#7d8994;font-size:10px;margin:12px 0}.floating-panel label>select,.floating-panel label>input{margin-top:6px;width:100%;height:40px;border-radius:10px;border:1px solid var(--studio-line);background:#090d11;color:#fff;padding:0 10px}.stepper{display:grid;grid-template-columns:42px 1fr 42px;gap:6px;margin-top:6px}.stepper button,.stepper input{height:42px;border-radius:10px;border:1px solid var(--studio-line);background:#090d11;color:#fff;text-align:center}.panel-primary{width:100%;height:44px;border:0;border-radius:11px;background:linear-gradient(90deg,#42dae5,#76f5a3);color:#061011;font-weight:950;cursor:pointer;margin-top:8px}.detected-key,.result-key{display:flex;justify-content:space-between;align-items:center;border:1px solid var(--studio-line);border-radius:11px;background:#0a0e13;padding:11px 12px;color:#7c8994;font-size:11px}.detected-key b,.result-key strong{color:#fff;font-size:18px}.transpose-stepper{display:grid;grid-template-columns:52px 1fr 52px;align-items:center;gap:8px;margin:14px 0}.transpose-stepper button{height:50px;border:1px solid var(--studio-line);border-radius:13px;background:#11171d;color:#fff;font-size:22px;cursor:pointer}.transpose-stepper>div{text-align:center}.transpose-stepper b{display:block;font-size:34px}.transpose-stepper small{color:#68747f;font-size:9px}.export-option{width:100%;display:block;text-align:left;border:1px solid var(--studio-line);border-radius:13px;background:#0a0e13;color:#fff;padding:14px;margin:8px 0;cursor:pointer}.export-option:hover{border-color:rgba(53,215,228,.35);background:#0c1318}.export-option b{display:block}.export-option small{display:block;color:#74808a;margin-top:4px}.panel-progress{margin-top:14px;color:#82909a;font-size:10px}.studio-prepare{backdrop-filter:blur(24px)}.wave-lane{border-radius:0 12px 12px 0}.track-controls{border-radius:12px 0 0 12px}.metro-dots{min-width:120px}.metro-dots i{transition:.08s}.metro-dots i.downbeat{background:#6bff9b}.metro-dots i.active{transform:scale(1.35)}
@media(max-width:900px){.import-grid{grid-template-columns:1fr}.super-hero{padding:22px}.studio-meta{overflow-x:auto;padding-bottom:2px}.floating-panel{top:78px;right:10px;width:min(330px,calc(100vw - 20px))}.shortcuts{display:none}.tempo-box input{width:70px}}

/* ===== V0.4.1 TIMING ENGINE ===== */
.metro-pro-panel{width:min(430px,calc(100vw - 24px));max-height:calc(100vh - 110px);overflow:auto}
.metro-status-card{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin:2px 0 14px}
.metro-status-card>div{background:rgba(255,255,255,.035);border:1px solid var(--studio-line);border-radius:11px;padding:10px}
.metro-status-card small{display:block;color:#697581;font-size:8px;letter-spacing:.12em;margin-bottom:4px}
.metro-status-card strong{display:block;font-size:11px;color:#e9fbfc}
.metro-button-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.metro-button-grid>button,.panel-secondary,.nudge-row button{border:1px solid var(--studio-line);background:#151b21;color:#d7e2e7;border-radius:9px;min-height:38px;cursor:pointer;font-weight:800;font-size:10px}
#tapTempo{border-color:rgba(53,215,228,.35);color:var(--cyan2)}
.range-value{float:right;color:var(--cyan2);font-size:10px;font-weight:800}
.alignment-box{border:1px solid rgba(53,215,228,.22);background:rgba(53,215,228,.035);border-radius:14px;padding:12px;display:grid;gap:9px}
.alignment-title{display:flex;flex-direction:column;gap:2px}.alignment-title small{color:#71808a;font-size:10px}
.nudge-row{display:grid;grid-template-columns:1fr .72fr 82px .72fr 1fr;gap:5px;align-items:center}
.nudge-row strong{text-align:center;color:var(--cyan2);font-size:11px}
.panel-secondary{width:100%}
#clickVolume,#clickAccent{accent-color:var(--cyan)}
.metro-lane:after{content:'AUDIO CLOCK';position:absolute;right:12px;top:9px;font-size:7px;letter-spacing:.13em;color:rgba(255,255,255,.24)}
@media(max-width:720px){.metro-status-card{grid-template-columns:1fr 1fr}.metro-status-card>div:last-child{grid-column:1/-1}.nudge-row{grid-template-columns:1fr 1fr 70px 1fr 1fr}}

/* ===== V0.4.2 CHORD ENGINE + METRO UX ===== */
.metro-toolbar-group{display:flex;align-items:center;gap:6px}
.metro-toolbar-group .meta-chip{height:42px}
.metro-power{min-width:58px;font-size:11px;letter-spacing:.08em;transition:.18s ease}
.metro-power.off{background:#151a20;color:#66737d;border-color:rgba(255,255,255,.08)}
.metro-power.on{background:linear-gradient(135deg,#35d7e4,#70ef9f);color:#061113;border-color:transparent;box-shadow:0 0 0 1px rgba(53,215,228,.18),0 0 24px rgba(53,215,228,.12)}
.chord-head-actions{display:flex;align-items:center;gap:9px}
#chordEngineBadge{font-size:8px;letter-spacing:.13em;color:#68dfe8;border:1px solid rgba(53,215,228,.22);padding:7px 9px;border-radius:99px;background:rgba(53,215,228,.05)}
#editCurrentChord{border:1px solid var(--studio-line);background:#151b21;color:#e9f5f7;border-radius:9px;padding:9px 12px;font-size:10px;font-weight:850;cursor:pointer}
.chord-help{margin:10px 8px 0;color:#667581;font-size:10px}
.chord-card{cursor:pointer;font-family:inherit}
.chord-card.edited{border-color:rgba(112,239,159,.45);box-shadow:inset 0 0 0 1px rgba(112,239,159,.08)}
.chord-confidence{font-size:8px;letter-spacing:.1em;color:#667581}
.chord-card.edited .chord-confidence{color:#70ef9f}
.chord-pill{cursor:pointer}
.chord-editor-panel{width:min(420px,calc(100vw - 24px))}
.chord-editor-status{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}
.chord-editor-status>div{padding:10px;border:1px solid var(--studio-line);border-radius:10px;background:rgba(255,255,255,.03)}
.chord-editor-status small{display:block;color:#687680;font-size:8px;letter-spacing:.12em;margin-bottom:4px}
.chord-editor-status strong{font-size:12px;color:#eaf9fa}
.chord-editor-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}
@media(max-width:820px){.metro-toolbar-group{gap:4px}.metro-power{min-width:50px}.chord-head-actions{flex-wrap:wrap;justify-content:flex-end}.chord-editor-status{grid-template-columns:1fr 1fr}.chord-editor-status>div:last-child{grid-column:1/-1}}

/* ===== V0.5 SECURE MULTI-USER ===== */
.auth-view{position:fixed;z-index:500;inset:0;min-height:100vh;overflow:auto;background:#05070a;display:grid;place-items:center;padding:24px;isolation:isolate}.auth-view:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to bottom,black,transparent 90%);z-index:-2}.auth-orb{position:absolute;border-radius:50%;filter:blur(100px);opacity:.18;z-index:-1}.auth-orb-a{width:520px;height:520px;background:#34e8d5;left:-160px;top:-180px}.auth-orb-b{width:440px;height:440px;background:#446cff;right:-120px;bottom:-180px}.auth-shell{width:min(1100px,100%);display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:center}.auth-brand{padding:44px 10px}.auth-mark,.mini-brand{display:grid;place-items:center;background:linear-gradient(135deg,#66f0dd,#43a7ff);color:#05100f;font-weight:950}.auth-mark{width:66px;height:66px;border-radius:20px;font-size:29px;margin-bottom:30px;box-shadow:0 18px 60px rgba(56,222,209,.16)}.auth-brand h1{font-size:clamp(44px,6vw,78px);line-height:.98;letter-spacing:-.065em;margin:12px 0 24px;max-width:700px}.auth-brand h1 span{font-size:1em;color:#75e9dc;vertical-align:baseline;letter-spacing:inherit}.auth-brand p{max-width:590px;color:#84919e;font-size:16px;line-height:1.8}.auth-feature-grid{display:flex;gap:10px;margin-top:34px}.auth-feature-grid>div{width:115px;padding:14px 16px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.025);border-radius:14px}.auth-feature-grid b{display:block;font-size:18px}.auth-feature-grid span{font-size:8px;color:#697583;letter-spacing:.14em}.auth-security-note{margin-top:24px;color:#5d6d79;font-size:10px;letter-spacing:.1em}.auth-card{background:rgba(14,18,23,.86);border:1px solid rgba(255,255,255,.09);box-shadow:0 35px 100px rgba(0,0,0,.52);backdrop-filter:blur(24px);border-radius:28px;padding:32px}.auth-card-top{display:flex;align-items:center;gap:13px;margin-bottom:28px}.mini-brand{width:42px;height:42px;border-radius:13px}.auth-card-top strong{display:block;font-size:18px}.auth-card-top small{display:block;color:#72808d;margin-top:3px}.auth-form{display:grid;gap:15px}.auth-form label,.modal-card label{font-size:9px;letter-spacing:.12em;color:#7f8b97;font-weight:800}.auth-form input,.modal-card input,.modal-card select{width:100%;margin-top:7px;height:48px;border:1px solid rgba(255,255,255,.09);border-radius:12px;background:#090d11;color:#fff;padding:0 14px;outline:none}.auth-form input:focus,.modal-card input:focus{border-color:#45d8cb;box-shadow:0 0 0 3px rgba(69,216,203,.07)}.password-wrap{position:relative}.password-wrap input{padding-right:48px}.password-eye{position:absolute;right:6px;bottom:6px;width:36px;height:36px;border:0;border-radius:9px;background:#151b21;color:#788692;cursor:pointer}.remember-row{display:flex!important;align-items:center;gap:8px;letter-spacing:0!important;text-transform:none}.remember-row input{width:16px!important;height:16px!important;margin:0!important}.auth-primary,.modal-primary{height:48px;border:0;border-radius:12px;background:linear-gradient(110deg,#48dbe1,#70edab);color:#04100e;font-weight:950;cursor:pointer}.setup-badge{padding:9px 12px;border:1px solid rgba(107,240,190,.2);background:rgba(107,240,190,.06);border-radius:10px;color:#72ecc1;font-size:9px;letter-spacing:.12em}.password-rule{color:#697582;font-size:10px}.auth-error{margin-top:16px;padding:11px 13px;border-radius:10px;background:rgba(255,87,101,.08);border:1px solid rgba(255,87,101,.2);color:#ff9ba3;font-size:11px}.auth-foot{text-align:center;margin-top:22px;color:#4f5b66;font-size:9px;letter-spacing:.1em}.user-menu-wrap{position:relative}.user-pill{display:flex;align-items:center;gap:9px;border:1px solid rgba(255,255,255,.09);background:#0d1217;color:#fff;border-radius:15px;padding:6px 10px 6px 7px;cursor:pointer}.user-avatar,.big-avatar{display:grid;place-items:center;border-radius:11px;background:linear-gradient(135deg,#46dfe0,#6ee9a4);color:#06100f;font-weight:950}.user-avatar{width:34px;height:34px}.big-avatar{width:64px;height:64px;border-radius:18px;font-size:23px}.user-pill-copy{text-align:left}.user-pill-copy b{display:block;font-size:11px}.user-pill-copy small{display:block;color:#5fdccb;font-size:7px;letter-spacing:.13em;margin-top:2px}.user-dropdown{position:absolute;right:0;top:52px;width:190px;padding:7px;border:1px solid rgba(255,255,255,.09);border-radius:14px;background:#0d1217;box-shadow:0 20px 60px rgba(0,0,0,.45);z-index:80}.user-dropdown button{width:100%;height:38px;border:0;background:transparent;color:#cbd5db;text-align:left;border-radius:8px;padding:0 10px;cursor:pointer}.user-dropdown button:hover{background:#171e25}.menu-sep{height:1px;background:rgba(255,255,255,.07);margin:4px}.danger-text{color:#ff8791!important}.smart-library-head{align-items:flex-end}.library-scope{color:#66737e;font-size:10px}.library-tools{display:flex;gap:8px}.search-box{height:40px;display:flex;align-items:center;gap:7px;border:1px solid rgba(255,255,255,.08);background:#0b0f13;border-radius:11px;padding:0 11px;color:#6d7984}.search-box input{border:0;background:transparent;color:#fff;outline:0;width:200px}.library-tools select{height:40px;border:1px solid rgba(255,255,255,.08);background:#10151a;color:#c7d0d6;border-radius:11px;padding:0 10px}.owner-chip{display:inline-flex;margin-top:6px;padding:3px 7px;border:1px solid rgba(72,220,211,.14);border-radius:99px;color:#58cfc8;font-size:8px;letter-spacing:.07em}.management-view{position:fixed;z-index:110;inset:0;background:#070a0e;color:#fff;overflow:auto}.management-header{height:82px;display:grid;grid-template-columns:48px 1fr auto;align-items:center;gap:16px;padding:0 28px;border-bottom:1px solid rgba(255,255,255,.08);background:rgba(8,11,15,.92);position:sticky;top:0;z-index:2;backdrop-filter:blur(16px)}.management-header h2{margin:3px 0 0}.admin-create-btn{height:42px;border:0;border-radius:11px;padding:0 16px;background:#55dfc4;color:#04100e;font-weight:950;cursor:pointer}.management-content{padding:26px;max-width:1500px;margin:auto}.admin-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}.stat-card{padding:18px;border:1px solid rgba(255,255,255,.08);border-radius:16px;background:#0d1217}.stat-card small{display:block;color:#64717d;font-size:8px;letter-spacing:.13em}.stat-card strong{display:block;font-size:25px;margin-top:6px}.admin-grid{display:grid;grid-template-columns:minmax(650px,1.6fr) minmax(340px,.8fr);gap:16px}.admin-panel{border:1px solid rgba(255,255,255,.08);border-radius:18px;background:#0c1015;overflow:hidden}.admin-panel-head{min-height:64px;padding:13px 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.07)}.admin-panel-head b{display:block;font-size:11px;letter-spacing:.1em}.admin-panel-head small{display:block;color:#65727e;margin-top:3px}.admin-panel-head input{width:200px;height:35px;border:1px solid rgba(255,255,255,.08);background:#080c10;color:#fff;border-radius:9px;padding:0 10px}.admin-user-list{padding:8px}.admin-user-row{display:grid;grid-template-columns:44px minmax(150px,1.3fr) 88px 88px 90px 260px;align-items:center;gap:10px;padding:10px;border-radius:12px}.admin-user-row:hover{background:#121820}.admin-avatar{width:38px;height:38px;border-radius:11px;background:#172128;display:grid;place-items:center;color:#67dfd0;font-weight:900}.admin-user-name b{display:block;font-size:12px}.admin-user-name small{color:#6e7a85}.role-badge,.status-badge{font-size:8px;font-weight:900;letter-spacing:.1em;padding:5px 7px;border-radius:99px;text-align:center}.role-badge.admin{background:rgba(100,225,196,.1);color:#68e2c8}.role-badge.user{background:rgba(100,148,225,.09);color:#90b7ed}.status-badge.on{color:#76e2a7}.status-badge.off{color:#ff8b94}.admin-actions{display:flex;gap:5px;justify-content:flex-end}.admin-actions button{height:30px;border:1px solid rgba(255,255,255,.08);background:#11171d;color:#aab5bd;border-radius:8px;padding:0 8px;font-size:9px;cursor:pointer}.admin-actions .del{color:#ff8f97}.audit-list{max-height:650px;overflow:auto;padding:8px}.audit-item{padding:11px;border-bottom:1px solid rgba(255,255,255,.055)}.audit-item b{font-size:10px}.audit-item small{display:block;color:#697681;margin-top:4px}.modal-shell{position:fixed;z-index:600;inset:0;background:rgba(2,4,7,.75);backdrop-filter:blur(12px);display:grid;place-items:center;padding:18px}.modal-card{position:relative;width:min(520px,100%);max-height:calc(100vh - 36px);overflow:auto;border:1px solid rgba(255,255,255,.1);border-radius:22px;background:#0e1318;padding:26px;box-shadow:0 30px 100px rgba(0,0,0,.6)}.compact-modal{width:min(420px,100%)}.modal-x{position:absolute;right:15px;top:15px;width:34px;height:34px;border:1px solid rgba(255,255,255,.08);background:#171d23;color:#fff;border-radius:10px;cursor:pointer}.modal-card h2{margin:7px 0 22px}.modal-section{display:grid;gap:12px;padding:17px 0;border-top:1px solid rgba(255,255,255,.07)}.account-identity{display:flex;align-items:center;gap:13px;margin-bottom:20px}.account-identity strong{display:block}.account-identity small{color:#66dfc9}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:10px}.switch-label{display:flex;flex-direction:column;justify-content:flex-end}.switch-label input{width:20px;height:20px}.modal-muted{color:#77838e;line-height:1.6}.modal-secondary,.modal-danger{height:42px;border-radius:10px;border:1px solid rgba(255,255,255,.08);font-weight:850;cursor:pointer}.modal-secondary{background:#151b21;color:#fff}.modal-danger{background:#a9343f;color:#fff;border-color:#c14b55}.confirm-card{text-align:center}.confirm-icon{width:50px;height:50px;margin:0 auto 12px;display:grid;place-items:center;border-radius:50%;background:rgba(255,92,104,.1);color:#ff8490;font-weight:950}.confirm-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:20px}
@media(max-width:900px){.auth-shell{grid-template-columns:1fr;gap:10px}.auth-brand{padding:20px 5px}.auth-brand h1{font-size:48px}.auth-brand p,.auth-feature-grid,.auth-security-note{display:none}.auth-card{max-width:520px;width:100%;justify-self:center}.header-right .server-dot,.header-right>div:nth-child(2){display:none}.user-pill-copy{display:none}.library-tools{width:100%;flex-wrap:wrap}.smart-library-head{align-items:stretch;flex-direction:column}.search-box{flex:1}.search-box input{width:100%}.admin-stats{grid-template-columns:1fr 1fr}.admin-grid{grid-template-columns:1fr}.admin-user-row{grid-template-columns:42px 1fr 70px}.admin-user-row>div:nth-child(4),.admin-user-row>div:nth-child(5){display:none}.admin-actions{grid-column:1/-1;justify-content:flex-start;padding-left:52px}.management-header{padding:0 12px}}


/* ===== V0.5.1 PUBLIC READY / COMFORTABLE UI ===== */
:root{
  --public-control-h:52px;
  --public-font:16px;
}
body{font-size:var(--public-font)}
.app-shell{max-width:1260px}
.public-topbar{min-height:92px}
.public-topbar h1{font-size:30px}
.public-topbar h1 span{font-size:13px!important;letter-spacing:.03em}
.public-topbar .eyebrow{font-size:10px}

.admin-system-status{
  display:flex;align-items:center;gap:8px;
  min-height:38px;padding:0 12px;border:1px solid rgba(255,255,255,.08);
  border-radius:12px;background:#0d1217;color:#82909b;font-size:10px
}
.admin-system-status .dot{width:8px;height:8px;border-radius:50%;background:#72e49a}
#engineBadge{color:#70e5d2;font-weight:850}

.user-pill{
  min-height:52px;padding:7px 13px 7px 8px;border-radius:16px;gap:11px
}
.user-avatar{width:40px;height:40px;font-size:14px}
.user-pill-copy b{font-size:15px;line-height:1.15}
.user-pill-copy small{font-size:10px;letter-spacing:.09em;margin-top:4px}
.user-chevron{font-size:14px;color:#71808b}
.user-dropdown{top:60px;width:220px;padding:8px}
.user-dropdown button{height:46px;font-size:14px;padding:0 13px}

.public-hero{padding:28px 30px}
.public-hero h2{font-size:clamp(32px,4vw,46px);margin-bottom:8px}
.public-hero p{font-size:16px;max-width:680px;line-height:1.65}
.import-grid{margin-top:20px}
.import-card{min-height:108px;padding:19px 21px}
.import-card strong{font-size:17px}
.import-card small{font-size:13px}
.url-row input{height:50px;font-size:15px;padding:0 15px}
.url-row button{min-width:104px;font-size:14px}

.super-network{display:none!important}
.library-section{margin-top:18px}
.smart-library-head{padding:3px 1px 4px}
.smart-library-head h2{font-size:31px;margin:5px 0}
.library-scope{font-size:13px}
.library-tools{gap:10px}
.search-box{height:48px;border-radius:13px;padding:0 14px}
.search-box input{font-size:15px;width:230px}
.library-tools select,.library-tools .secondary-btn{height:48px;font-size:14px;border-radius:13px}

.song-card{min-height:92px;padding:13px 14px}
.song-info strong{font-size:17px;line-height:1.25}
.song-meta{font-size:12px;margin-top:6px}
.owner-chip{font-size:10px;padding:4px 8px}
.status-pill{font-size:10px;padding:7px 10px}
.song-actions button{min-height:44px;font-size:12px;padding:0 14px}
.play-btn{width:50px;height:50px;font-size:17px}

/* Auth readability */
.auth-shell{gap:56px}
.auth-brand p{font-size:18px;line-height:1.7}
.auth-feature-grid span{font-size:9px}
.auth-card{padding:36px}
.auth-card-top strong{font-size:22px}
.auth-card-top small{font-size:14px}
.auth-form{gap:19px}
.auth-form label,.modal-card label{font-size:12px;letter-spacing:.08em}
.auth-form input,.modal-card input,.modal-card select{
  height:54px;font-size:16px;padding:0 16px;border-radius:13px
}
.remember-row{font-size:14px!important}
.remember-row input{width:20px!important;height:20px!important}
.auth-primary,.modal-primary{height:54px;font-size:14px;border-radius:13px}
.password-rule{font-size:12px;line-height:1.5}
.auth-error{font-size:13px;line-height:1.5}
.auth-foot{font-size:10px}

/* Admin comfortable UI */
.management-header{height:92px;padding:0 34px}
.management-header h2{font-size:28px}
.management-header .eyebrow{font-size:10px}
.admin-create-btn{height:50px;font-size:14px;padding:0 20px;border-radius:13px}
.management-content{padding:30px;max-width:1580px}
.admin-stats{gap:15px;margin-bottom:22px}
.stat-card{padding:22px 24px;border-radius:18px;min-height:104px}
.stat-card small{font-size:10px}
.stat-card strong{font-size:31px;margin-top:9px}
.admin-grid{grid-template-columns:minmax(760px,1.7fr) minmax(380px,.8fr);gap:18px}
.admin-panel{border-radius:20px}
.admin-panel-head{min-height:76px;padding:16px 20px}
.admin-panel-head b{font-size:14px}
.admin-panel-head small{font-size:12px;margin-top:5px}
.admin-panel-head input{width:240px;height:44px;font-size:14px;padding:0 13px;border-radius:11px}
.admin-user-list{padding:10px}
.admin-user-row{
  grid-template-columns:54px minmax(190px,1.4fr) 100px 105px 105px 330px;
  gap:12px;padding:14px 12px;min-height:78px;border-radius:14px
}
.admin-avatar{width:46px;height:46px;border-radius:13px;font-size:14px}
.admin-user-name b{font-size:16px}
.admin-user-name small{font-size:12px;display:block;margin-top:5px}
.role-badge,.status-badge{font-size:10px;padding:7px 9px}
.admin-user-row>div>small{font-size:12px}
.admin-actions{gap:7px}
.admin-actions button{height:38px;font-size:10px;padding:0 11px;border-radius:9px}
.audit-item{padding:14px 13px}
.audit-item b{font-size:13px}
.audit-item small{font-size:11px;line-height:1.5}

/* Modal / user editor */
.modal-card{width:min(660px,100%);padding:32px;border-radius:24px}
.compact-modal{width:min(500px,100%)}
.modal-card h2{font-size:28px;margin:8px 0 24px}
.modal-card .eyebrow{font-size:10px}
.modal-x{width:40px;height:40px}
.modal-section{gap:15px;padding:20px 0}
.modal-section h3{font-size:18px}
.two-col{gap:14px}
.switch-label{font-size:12px!important}
.account-identity strong{font-size:18px}
.account-identity small{font-size:12px}
.modal-secondary,.modal-danger{min-height:50px;font-size:13px}

@media(max-width:1100px){
  .app-shell{padding-left:18px;padding-right:18px}
  .admin-grid{grid-template-columns:1fr}
  .audit-panel{min-height:260px}
  .admin-user-row{grid-template-columns:50px minmax(180px,1fr) 90px 95px}
  .admin-user-row>div:nth-child(5){display:none}
  .admin-actions{grid-column:2/-1;justify-content:flex-start}
}
@media(max-width:760px){
  body{font-size:16px}
  .public-topbar{min-height:76px}
  .public-topbar>div:first-child .eyebrow{display:none}
  .public-topbar h1{font-size:23px}
  .user-pill-copy b{font-size:14px}
  .public-hero{padding:21px}
  .public-hero h2{font-size:31px}
  .library-tools{width:100%;flex-wrap:wrap}
  .search-box{flex:1;min-width:200px}
  .search-box input{width:100%}
  .management-header{padding:0 15px;height:82px}
  .management-header h2{font-size:21px}
  .management-content{padding:16px}
  .admin-stats{grid-template-columns:1fr 1fr}
  .admin-user-row{grid-template-columns:48px 1fr;padding:14px 10px}
  .admin-user-row>.role-badge,.admin-user-row>.status-badge{justify-self:start}
  .admin-actions{grid-column:1/-1}
  .modal-card{padding:24px 20px}
}


/* ===== V0.5.2 USER PROVISIONING ===== */
.user-provision-modal{width:min(690px,calc(100vw - 28px))}
#userForm,#resetPasswordForm{display:grid;gap:16px}
.field-help{display:block;margin-top:7px;color:#6f7e89;font-size:11px;letter-spacing:0;text-transform:none;font-weight:500}
.password-create-fields{display:grid;gap:14px;padding:15px;border:1px solid rgba(53,215,228,.12);background:rgba(53,215,228,.025);border-radius:15px}
.password-input-wrap{position:relative;display:flex;align-items:center}
.password-input-wrap input{width:100%;padding-right:72px!important}
.password-eye{position:absolute;right:8px;height:36px!important;min-height:36px!important;padding:0 10px!important;border:1px solid rgba(255,255,255,.08);background:#12181e;color:#8ea0ab;border-radius:8px;font-size:9px;font-weight:850;cursor:pointer}
.password-checks{display:grid;gap:6px;padding:2px 2px 0;font-size:11px;color:#74828d}
.password-checks span.ok{color:#69e3b3}
.password-checks span.bad{color:#7d8992}
.form-alert{padding:12px 14px;border-radius:11px;font-size:13px;line-height:1.45;font-weight:650}
.form-alert.error{background:rgba(255,77,92,.09);border:1px solid rgba(255,77,92,.3);color:#ff9aa4}
.form-alert.success{background:rgba(78,230,170,.09);border:1px solid rgba(78,230,170,.3);color:#83ecc2}
.provision-save:disabled,#confirmResetPassword:disabled{opacity:.7;cursor:wait}
.btn-spinner{display:inline-block;width:14px;height:14px;border:2px solid rgba(0,0,0,.25);border-top-color:#071012;border-radius:50%;margin-left:8px;vertical-align:-2px;animation:provisionSpin .65s linear infinite}
@keyframes provisionSpin{to{transform:rotate(360deg)}}
#userForm input:focus,#userForm select:focus,#resetPasswordForm input:focus{border-color:#42d7df;box-shadow:0 0 0 3px rgba(66,215,223,.08)}
@media(max-width:700px){.user-provision-modal{padding:24px 18px}.password-create-fields{padding:12px}}


/* ===== V0.5.3 iPAD HQ PLAYBACK ===== */
.playback-mode-badge{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:34px;padding:0 10px;border-radius:10px;
  border:1px solid rgba(255,255,255,.08);
  background:#11171d;color:#7e8d98;font-size:9px;font-weight:900;
  letter-spacing:.08em;white-space:nowrap
}
.playback-mode-badge.ios{
  color:#8af0de;border-color:rgba(77,225,199,.24);
  background:rgba(77,225,199,.06)
}
@media(max-width:820px){
  .playback-mode-badge{min-height:30px;padding:0 8px;font-size:8px}
}


/* ===== V0.5.4 iPAD WEB AUDIO MIXER ===== */
.playback-mode-badge.ios{
  transition:border-color .18s ease,background .18s ease,color .18s ease
}
.mute-btn.muted{
  box-shadow:0 0 0 2px rgba(255,92,112,.12) inset
}
.solo-btn.soloed{
  box-shadow:0 0 0 2px rgba(78,228,196,.12) inset
}


/* ===== V0.6 ULTRA SEPARATION CORE ===== */
.separation-wizard{
  width:min(960px,calc(100vw - 28px));max-height:92vh;overflow:auto;padding:30px;
}
.separation-wizard h2{font-size:30px;margin:7px 0 5px}
.sep-presets{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:22px 0}
.sep-presets button{
  min-height:78px;text-align:left;padding:14px 15px;border:1px solid rgba(255,255,255,.08);
  border-radius:14px;background:#0e1419;color:#d8e2e7;cursor:pointer;transition:.18s ease;
}
.sep-presets button:hover{border-color:rgba(61,218,222,.28);transform:translateY(-1px)}
.sep-presets button.active{
  border-color:rgba(63,226,215,.62);background:linear-gradient(135deg,rgba(38,211,201,.13),rgba(22,48,55,.32));
  box-shadow:0 0 0 2px rgba(61,220,211,.06) inset;
}
.sep-presets b{display:block;font-size:13px;letter-spacing:.03em}
.sep-presets small{display:block;margin-top:7px;color:#75858f;font-size:11px;line-height:1.35}
.sep-section{margin-top:14px;padding:17px;border:1px solid rgba(255,255,255,.07);border-radius:17px;background:rgba(8,13,17,.72)}
.sep-section-head{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:13px}
.sep-section-head b{font-size:12px;letter-spacing:.09em}
.sep-section-head small{display:block;font-size:11px;color:#72808a;margin-top:4px}
.sep-section-head>span{font-size:9px;font-weight:900;letter-spacing:.08em;color:#71e7d4;border:1px solid rgba(73,220,203,.18);border-radius:8px;padding:6px 8px}
.sep-stem-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:9px}
.sep-stem-grid label{
  min-height:74px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  padding:9px;border:1px solid rgba(255,255,255,.07);border-radius:13px;background:#0f151a;cursor:pointer;
  font-size:11px;text-transform:none;letter-spacing:0
}
.sep-stem-grid label:has(input:checked){border-color:rgba(68,224,213,.4);background:rgba(51,211,201,.075)}
.sep-stem-grid input{position:absolute;opacity:0;pointer-events:none}
.sep-stem-grid span{font-size:20px}
.sep-stem-grid b{font-size:11px}
.sep-note{font-size:10px;line-height:1.55;color:#697984;margin-top:11px}
.expand-options{display:grid;gap:8px}
.expand-options label{
  min-height:60px;display:grid;grid-template-columns:24px 1fr;gap:10px;align-items:center;
  padding:10px 12px;border:1px solid rgba(255,255,255,.065);border-radius:12px;background:#0e1419;
  cursor:pointer;text-transform:none;letter-spacing:0
}
.expand-options label.available:has(input:checked){border-color:rgba(66,222,204,.36);background:rgba(66,222,204,.055)}
.expand-options label.unavailable{opacity:.58;cursor:not-allowed}
.expand-options input{width:18px;height:18px;min-height:18px}
.expand-options b{font-size:12px}
.expand-options small{display:block;margin-top:4px;color:#75848e;font-size:10px}
.expand-options label.available small{color:#70dcbf}
.sep-quality-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}
.quality-card{
  display:grid;grid-template-columns:22px 1fr;gap:10px;align-items:center;min-height:66px;padding:12px 14px;
  border:1px solid rgba(255,255,255,.07);border-radius:13px;background:#0d1318;cursor:pointer;text-transform:none;letter-spacing:0
}
.quality-card.active{border-color:rgba(84,216,255,.4);background:rgba(65,195,236,.055)}
.quality-card input{width:17px;height:17px;min-height:17px}
.quality-card b{font-size:12px}.quality-card small{display:block;margin-top:4px;color:#74838d;font-size:10px}
.sep-plan{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:14px 0}
.sep-plan>div{padding:12px 14px;border-radius:12px;background:#0a1014;border:1px solid rgba(255,255,255,.055)}
.sep-plan small{display:block;font-size:8px;color:#65747e;letter-spacing:.12em}
.sep-plan strong{display:block;margin-top:5px;font-size:11px;color:#b9c7ce}
.sep-start{height:58px;font-size:14px}
.stem-summary{color:#6ce0cf!important;font-size:9px!important;letter-spacing:.05em}
.cancel-job-btn,.retry-job-btn{min-height:42px!important}
.cancel-job-btn{color:#ff98a4!important;border-color:rgba(255,89,108,.18)!important}
.retry-job-btn{color:#8be7c8!important;border-color:rgba(73,218,177,.18)!important}

/* Ultra Stem Tree */
.ultra-stems-panel{padding:20px}
.ultra-head{display:flex;justify-content:space-between;align-items:flex-end;gap:18px;margin-bottom:14px}
.ultra-head h2{font-size:28px;margin:5px 0 4px}
.ultra-head p{font-size:12px;color:#72828d;margin:0}
.ultra-head-actions{display:flex;gap:8px}
.ultra-head-actions button{height:42px;padding:0 13px;border-radius:11px;border:1px solid rgba(255,255,255,.08);background:#11181d;color:#9eadb5;font-size:10px;font-weight:800}
#exportStemTree{color:#77e5d2!important;border-color:rgba(79,222,204,.2)!important}
.model-pack-strip{display:flex;flex-wrap:wrap;gap:7px;margin:14px 0}
.pack-chip{display:inline-flex;gap:7px;align-items:center;padding:7px 9px;border-radius:9px;border:1px solid rgba(255,255,255,.065);background:#0d1317}
.pack-chip b{font-size:9px}.pack-chip small{font-size:8px;color:#71808a}
.pack-chip.ready{border-color:rgba(77,224,189,.2)}.pack-chip.ready small{color:#70ddb8}
.pack-chip.install{border-color:rgba(241,188,79,.18)}.pack-chip.install small{color:#d9a951}
.pack-chip.planned{opacity:.58}
.stem-tree-host{display:grid;gap:8px}
.tree-root-shell,.tree-child-shell{display:block}
.stem-tree-node{position:relative}
.tree-main{
  position:relative;display:grid;grid-template-columns:32px 32px minmax(170px,1fr) auto minmax(270px,auto);
  align-items:center;gap:9px;min-height:64px;padding:9px 11px;
  margin-left:calc(var(--tree-depth,0) * 24px);border:1px solid rgba(255,255,255,.065);
  border-radius:13px;background:linear-gradient(90deg,rgba(13,20,25,.98),rgba(10,15,19,.91))
}
.depth-1 .tree-main,.depth-2 .tree-main,.depth-3 .tree-main{background:#0c1216}
.tree-rail{position:absolute;left:calc(var(--tree-depth,0) * 24px - 11px);top:-8px;bottom:-8px;border-left:1px solid rgba(70,210,202,.13)}
.tree-toggle{width:30px;height:30px;min-height:30px!important;padding:0!important;border-radius:8px;border:1px solid rgba(255,255,255,.06);background:#10171c;color:#76858f}
.tree-toggle.empty{border-color:transparent;background:transparent}
.tree-icon{width:30px;height:30px;display:grid;place-items:center;border-radius:9px;background:rgba(52,217,207,.07);color:#66ded0;font-size:11px}
.tree-copy strong{display:block;font-size:13px}.tree-copy small{display:block;margin-top:4px;font-size:9px;color:#667680}
.tree-status{padding:6px 8px;border-radius:8px;font-size:8px;font-weight:900;letter-spacing:.06em;background:#11191e;color:#74838d}
.tree-status.ready{color:#6ee1b8;background:rgba(63,213,159,.07)}
.tree-status.processing,.tree-status.queued{color:#68dce8;background:rgba(62,197,216,.08)}
.tree-status.failed{color:#ff8c98;background:rgba(255,74,90,.08)}
.tree-status.unavailable{color:#d8a855;background:rgba(226,164,61,.07)}
.tree-actions{display:flex;align-items:center;justify-content:flex-end;gap:6px;flex-wrap:wrap}
.tree-actions button{height:34px;min-height:34px!important;padding:0 10px!important;border-radius:8px;border:1px solid rgba(255,255,255,.07);background:#11181d;color:#87969f;font-size:8px;font-weight:850}
.tree-actions .tree-expand{color:#70e2d1;border-color:rgba(75,221,204,.23);background:rgba(63,211,198,.055)}
.tree-actions .tree-install{color:#dfb358;border-color:rgba(222,174,79,.18)}
.tree-export-check{display:flex!important;align-items:center;gap:5px!important;margin:0!important;padding:0 6px!important;text-transform:none!important;letter-spacing:0!important;font-size:8px!important;color:#76858f!important}
.tree-export-check input{width:14px!important;height:14px!important;min-height:14px!important}
.tree-children{display:grid;gap:6px;margin-top:6px}
.stem-tree-node.collapsed>.tree-children{display:none}
.tree-empty{padding:32px;border:1px dashed rgba(255,255,255,.08);border-radius:14px;text-align:center;color:#65747d;font-size:12px}
.stem-tree-job{margin-top:13px;padding:13px;border-radius:12px;background:#0c1317;border:1px solid rgba(71,221,211,.12)}
.stem-tree-job>div:first-child{display:flex;justify-content:space-between;font-size:10px;color:#84949d}
.stem-tree-job strong{color:#75e1d0}
.child-track{border-left:2px solid rgba(75,220,208,.28)!important}
.child-track .track-controls{background:linear-gradient(90deg,rgba(40,181,173,.04),transparent)}
.sub-stem-badge{font-size:7px!important;letter-spacing:.08em;padding:4px 5px;border-radius:6px;border:1px solid rgba(75,218,207,.16);color:#65d9ca}
.sub-stem-badge.keys{color:#87cfff;border-color:rgba(89,177,235,.18)}

@media(max-width:900px){
  .sep-presets{grid-template-columns:repeat(2,1fr)}
  .sep-stem-grid{grid-template-columns:repeat(3,1fr)}
  .tree-main{grid-template-columns:30px 30px minmax(130px,1fr) auto}
  .tree-actions{grid-column:3/-1;justify-content:flex-start;padding-top:2px}
}
@media(max-width:650px){
  .separation-wizard{padding:22px 16px}
  .sep-presets{grid-template-columns:1fr 1fr}
  .sep-stem-grid{grid-template-columns:repeat(2,1fr)}
  .sep-quality-row,.sep-plan{grid-template-columns:1fr}
  .ultra-head{align-items:flex-start;flex-direction:column}
  .tree-main{margin-left:calc(var(--tree-depth,0) * 12px);grid-template-columns:28px 28px 1fr}
  .tree-status{grid-column:3}
  .tree-actions{grid-column:1/-1}
  .tree-rail{left:calc(var(--tree-depth,0) * 12px - 6px)}
}