:root{
  --navy:#0f3558;
  --teal:#1ca6a4;
  --teal-dark:#0f7f89;
  --bg:#f6f8fa;
  --card:#ffffff;
  --text:#17324d;
  --muted:#6d7f90;
  --line:#dfe6eb;
  --danger:#d83a34;
  --shadow:0 10px 28px rgba(15,53,88,.10);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text)}
body{min-height:100vh}
button,input{font:inherit}
button{cursor:pointer}
.app-shell{
  width:min(760px,100%);
  margin:0 auto;
  padding:calc(18px + env(safe-area-inset-top)) 18px calc(30px + env(safe-area-inset-bottom));
}
.brand{text-align:center;padding:12px 0 20px}
.brand-icon{width:84px;height:84px;border-radius:22px;box-shadow:var(--shadow)}
.brand h1{margin:12px 0 3px;font-size:2rem;letter-spacing:-.02em;color:var(--navy)}
.owner{font-size:1.05rem;color:var(--teal-dark);font-weight:600}
.subtitle{margin:16px 0 0;font-size:1.1rem}
.toolbar{margin-bottom:26px}
.primary-btn{
  width:100%;border:0;border-radius:16px;padding:17px 20px;
  background:linear-gradient(135deg,var(--teal),var(--teal-dark));
  color:white;font-weight:700;font-size:1.05rem;box-shadow:var(--shadow)
}
.section-title-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin:0 2px 12px}
.section-title-row h2{margin:0;font-size:1.25rem}
.section-title-row span{color:var(--muted);font-size:.95rem}
.empty-state{
  text-align:center;background:var(--card);border:1px solid var(--line);
  border-radius:18px;padding:34px 24px;color:var(--muted);box-shadow:var(--shadow)
}
.empty-state h3{color:var(--text);margin:8px 0}
.empty-state p{margin:6px auto 0;max-width:420px;line-height:1.45}
.empty-symbol{font-size:2.6rem;color:var(--teal)}
.audio-list{display:grid;gap:12px}
.audio-item{
  display:grid;grid-template-columns:54px 1fr 28px;gap:14px;align-items:center;
  width:100%;background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:14px 14px;text-align:left;box-shadow:var(--shadow)
}
.play-dot{
  width:48px;height:48px;border-radius:50%;display:grid;place-items:center;
  color:white;background:linear-gradient(135deg,var(--teal),var(--teal-dark));font-size:1.05rem
}
.file-name{
  font-weight:700;line-height:1.25;overflow-wrap:anywhere;word-break:break-word;
  white-space:normal;
}
.file-meta{margin-top:5px;color:var(--muted);font-size:.88rem}
.chev{font-size:1.7rem;color:var(--muted);text-align:center}
.player-dialog{
  width:100%;height:100%;max-width:none;max-height:none;margin:0;border:0;padding:0;background:var(--bg)
}
.player-dialog::backdrop{background:rgba(0,0,0,.2)}
.player-card{
  width:min(760px,100%);min-height:100vh;margin:0 auto;padding:calc(14px + env(safe-area-inset-top)) 22px calc(30px + env(safe-area-inset-bottom))
}
.player-topbar{display:flex;justify-content:space-between}
.icon-btn{border:0;background:transparent;color:var(--navy);font-size:1.5rem;padding:10px}
.icon-btn.danger{color:var(--danger)}
.player-brand{text-align:center;margin-top:6px}
.player-brand img{width:76px;height:76px;border-radius:20px;box-shadow:var(--shadow)}
.player-title{
  text-align:center;margin:20px auto 8px;max-width:620px;
  font-size:1.45rem;line-height:1.25;overflow-wrap:anywhere;word-break:break-word
}
.player-meta{text-align:center;color:var(--muted);margin:0 0 34px}
.timeline{display:grid;grid-template-columns:48px 1fr 48px;gap:12px;align-items:center;margin:0 auto 32px;max-width:620px}
.timeline span{font-variant-numeric:tabular-nums;color:var(--muted);font-size:.9rem}
.timeline span:last-child{text-align:right}
#seek{width:100%;accent-color:var(--teal)}
.controls{display:flex;justify-content:center;align-items:center;gap:34px;margin:12px 0 30px}
.round-primary,.round-secondary{border-radius:50%;display:grid;place-items:center}
.round-primary{
  width:86px;height:86px;border:0;color:white;font-size:2rem;
  background:linear-gradient(135deg,var(--teal),var(--teal-dark));box-shadow:var(--shadow)
}
.round-secondary{
  width:62px;height:62px;border:2px solid var(--navy);background:white;color:var(--navy);
  font-weight:700;font-size:1.3rem;position:relative
}
.round-secondary span{font-size:.8rem;position:absolute;bottom:13px}
.repeat-btn{
  width:100%;max-width:620px;display:block;margin:0 auto;border:1px solid var(--line);
  background:white;border-radius:15px;padding:15px;color:var(--teal-dark);font-weight:700
}
@media (max-width:420px){
  .brand h1{font-size:1.75rem}
  .controls{gap:20px}
  .round-primary{width:78px;height:78px}
  .round-secondary{width:56px;height:56px}
}