:root{
  --bg:#0a0d0c; --panel:rgba(18,22,20,.82); --line:#1f2a25;
  --ink:#d7e4dc; --dim:#6f8278; --accent:#76e36b; --accent-dim:#2f5a2c;
  --warn:#e3b86b;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);
  font-family:'Azeret Mono',ui-monospace,Menlo,Consolas,monospace;overflow:hidden}
#app{position:fixed;inset:0}
canvas{display:block}
#viser{position:fixed;inset:0;width:100%;height:100%;border:0;z-index:0;
  background:var(--bg)}

.hud{position:fixed;pointer-events:none;z-index:5}
.hud *{pointer-events:auto}

/* top-left title */
#brand{top:18px;left:20px}
#brand h1{margin:0;font-size:13px;letter-spacing:.32em;font-weight:700;
  text-transform:uppercase}
#brand h1 b{color:var(--accent)}
#brand p{margin:3px 0 0;font-size:10.5px;color:var(--dim);letter-spacing:.18em}

/* top-center prompt / generation panel */
#gen{top:18px;left:50%;transform:translateX(-50%);
  background:var(--panel);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:14px;padding:10px 12px;
  display:flex;align-items:center;gap:10px;width:min(640px,84vw);
  box-shadow:0 18px 50px -20px #000}
#prompt{flex:1;font-family:inherit;background:#0f140f;color:var(--ink);
  border:1px solid var(--line);border-radius:9px;padding:9px 11px;
  font-size:12px;letter-spacing:.03em;outline:none}
#prompt:focus{border-color:var(--accent-dim)}
#prompt::placeholder{color:var(--dim)}
#dur{width:58px;font-family:inherit;background:#0f140f;color:var(--ink);
  border:1px solid var(--line);border-radius:9px;padding:9px 8px;font-size:12px;
  text-align:center;outline:none}
#dur:focus{border-color:var(--accent-dim)}
#genBtn{min-width:96px}
#genBtn.busy{opacity:.6;cursor:progress}

/* voice (continuous mic) toggle */
#micBtn{display:flex;align-items:center;gap:7px;min-width:88px;justify-content:center}
#micBtn[hidden]{display:none}
#micBtn .dot{width:8px;height:8px;border-radius:50%;background:var(--dim);
  transition:.15s}
#micBtn.on{border-color:var(--accent);color:var(--accent)}
#micBtn.on .dot{background:#e3705e;animation:pulse 1.1s ease-in-out infinite}
#micBtn.live .dot{background:var(--accent);box-shadow:0 0 8px var(--accent)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.25}}
#genStatus{position:absolute;left:0;top:100%;margin-top:8px;width:100%;
  text-align:center;font-size:10.5px;letter-spacing:.06em;color:var(--dim);
  pointer-events:none}
#genStatus.err{color:var(--warn)}

button{font-family:inherit;color:var(--ink);background:#141a17;
  border:1px solid var(--line);border-radius:9px;padding:8px 12px;
  font-size:11px;letter-spacing:.08em;cursor:pointer;transition:.15s}
button:hover{border-color:var(--accent-dim);color:var(--accent)}
button.play{background:var(--accent);color:#06160a;border-color:var(--accent);
  font-weight:700;min-width:74px}
button.play:hover{filter:brightness(1.08);color:#06160a}
button.accent{background:var(--accent);color:#06160a;border-color:var(--accent);
  font-weight:700}
button.accent:hover{filter:brightness(1.08);color:#06160a}

/* bottom control bar */
#bar{left:50%;transform:translateX(-50%);bottom:20px;
  background:var(--panel);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:14px;padding:12px 16px;
  display:flex;align-items:center;gap:14px;min-width:min(720px,92vw);
  box-shadow:0 18px 50px -20px #000}
#scrub{flex:1;accent-color:var(--accent);height:4px;cursor:pointer}
.read{font-size:11px;color:var(--dim);white-space:nowrap;letter-spacing:.06em}
.read b{color:var(--ink);font-weight:500}

/* right settings rail */
#rail{top:18px;right:20px;background:var(--panel);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:14px;padding:14px;width:212px;
  display:flex;flex-direction:column;gap:11px;box-shadow:0 18px 50px -20px #000}
.row{display:flex;align-items:center;justify-content:space-between;gap:10px}
.lab{font-size:10.5px;color:var(--dim);letter-spacing:.1em;text-transform:uppercase}
.seg{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg button{border:0;border-radius:0;padding:6px 10px;font-size:10px}
.seg button.on{background:var(--accent-dim);color:var(--accent)}
.chk{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--ink);
  cursor:pointer;letter-spacing:.04em}
.chk input{accent-color:var(--accent);width:14px;height:14px}
select{font-family:inherit;background:#141a17;color:var(--ink);
  border:1px solid var(--line);border-radius:8px;padding:6px 8px;font-size:11px}
.hr{height:1px;background:var(--line);margin:2px 0}
#loadBtn{width:100%;text-align:center;border-style:dashed;
  border-color:var(--accent-dim);color:var(--accent)}
#fileName{font-size:10px;color:var(--dim);word-break:break-all;line-height:1.4}

/* drop overlay */
#drop{position:fixed;inset:0;z-index:30;display:none;align-items:center;
  justify-content:center;background:rgba(8,12,10,.86);
  border:2px dashed var(--accent);}
#drop.show{display:flex}
#drop div{font-size:14px;letter-spacing:.2em;color:var(--accent);text-transform:uppercase}

#toast{position:fixed;bottom:88px;left:50%;transform:translateX(-50%);z-index:20;
  background:#1a120a;border:1px solid var(--warn);color:var(--warn);
  padding:9px 14px;border-radius:10px;font-size:11px;letter-spacing:.05em;
  display:none}

/* small, non-blocking generation indicator (does not cover the canvas) */
#busy{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);z-index:40;
  display:none;align-items:center;gap:10px;pointer-events:none;
  background:var(--panel);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:10px;padding:8px 14px;
  box-shadow:0 18px 50px -20px #000}
#busy.show{display:flex}
#busy .spin{width:16px;height:16px;border:2px solid var(--line);
  border-top-color:var(--accent);border-radius:50%;animation:spin 0.9s linear infinite}
#busy .msg{font-size:11px;letter-spacing:.14em;color:var(--accent);
  text-transform:uppercase}
@keyframes spin{to{transform:rotate(360deg)}}