/* Scoped CSS: only inside #ttsApp */
#ttsApp.vt{
  --bg:#ffffff; --card:#ffffff; --text:#1c1f24; --muted:#6b7280; --border:#e5e7eb;
  --shadow: 0 10px 30px rgba(0,0,0,.07); --primary:#4f7edb; --primary2:#386fe0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  color: var(--text); background: var(--bg); padding: 18px; max-width: 1200px; margin: 0 auto;
}
#ttsApp *{ box-sizing:border-box; }
#ttsApp a{ color:inherit; text-decoration:none; }
#ttsApp .vt__header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 6px 18px;}
#ttsApp .vt__brand{display:flex;align-items:center;gap:12px;}
#ttsApp .vt__logo{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(79,126,219,.12);border:1px solid rgba(79,126,219,.20);}
#ttsApp .vt__title{font-size:22px;font-weight:800;line-height:1.1;}
#ttsApp .vt__subtitle{font-size:13px;color:var(--muted);margin-top:2px;}
#ttsApp .vt__nav{display:flex;gap:10px;}
#ttsApp .vt__navlink{padding:8px 12px;border:1px solid var(--border);border-radius:12px;background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.03);}
#ttsApp .vt__grid{display:grid;grid-template-columns:1.15fr .85fr;gap:16px;align-items:start;}
#ttsApp .vt__card{background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);padding:16px;}
#ttsApp .vt__h2{font-size:16px;font-weight:800;margin:0 0 10px;}
#ttsApp .vt__h3{font-size:15px;font-weight:800;margin:0 0 10px;}
#ttsApp .vt__label{display:block;font-size:12px;font-weight:700;margin:10px 0 6px;color:#374151;}
#ttsApp .vt__textareaWrap{border:1px solid var(--border);border-radius:14px;overflow:hidden;background:#fff;}
#ttsApp .vt__textarea{width:100%;border:0;padding:12px 12px 0;font-size:14px;resize:vertical;outline:none;min-height:240px;}
#ttsApp .vt__textareaFooter{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 12px;border-top:1px solid var(--border);background:#fafafa;}
#ttsApp .vt__row{display:grid;gap:12px;margin-top:10px;}
#ttsApp .vt__row--2{grid-template-columns:1fr 1fr;}
#ttsApp .vt__row--3{grid-template-columns:1.4fr 1fr 1fr;}
#ttsApp .vt__select{width:100%;border:1px solid var(--border);border-radius:12px;padding:10px 12px;background:#fff;outline:none;}
#ttsApp .vt__range{width:100%;}
#ttsApp .vt__actions{display:flex;flex-direction:column;gap:8px;align-items:flex-start;margin-top:18px;}
#ttsApp .vt__status{font-size:12px;color:var(--muted);min-height:16px;}
#ttsApp .vt__btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;padding:10px 12px;border:1px solid var(--border);background:#fff;cursor:pointer;font-weight:800;font-size:13px;}
#ttsApp .vt__btn--primary{background:linear-gradient(180deg,var(--primary),var(--primary2));color:#fff;border:0;padding:12px 14px;}
#ttsApp .vt__btn--ghost{background:#fff;}
#ttsApp .vt__note{margin-top:12px;font-size:12px;color:var(--muted);background:rgba(79,126,219,.07);border:1px solid rgba(79,126,219,.18);padding:10px 12px;border-radius:12px;}
#ttsApp .vt__asideTop{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px;}
#ttsApp .vt__list{display:flex;flex-direction:column;gap:10px;}
#ttsApp .vt__item{border:1px solid var(--border);border-radius:14px;padding:10px;background:#fff;}
#ttsApp audio{width:100%;margin-top:10px;}
#ttsApp .vt__footer{padding:16px 6px 0;}
#ttsApp .vt__muted{color:var(--muted);font-size:12px;}
#ttsApp .vt__modal{border:1px solid var(--border);border-radius:16px;padding:0;width:min(720px,96vw);}
#ttsApp .vt__modal::backdrop{background:rgba(0,0,0,.35);}
#ttsApp .vt__modalInner{padding:16px;}
#ttsApp .vt__ol{margin:10px 0 0 18px;color:#374151;font-size:13px;}
#ttsApp .vt__pre{background:#0b1220;color:#e6eefc;padding:10px;border-radius:12px;overflow:auto;font-size:12px;margin-top:8px;}
#ttsApp code{background:rgba(79,126,219,.12);padding:2px 6px;border-radius:8px;}
#ttsApp .vt__modalActions{display:flex;justify-content:flex-end;margin-top:12px;}
@media (max-width:980px){ #ttsApp .vt__grid{grid-template-columns:1fr;} }
@media (max-width:640px){
  #ttsApp .vt__row--2, #ttsApp .vt__row--3{grid-template-columns:1fr;}
  #ttsApp.vt{padding:12px;}
}