* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #12141a;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: #e6e8ef;
}

.ventana {
  width: 880px;
  max-width: 95vw;
  background: #1b1e27;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,.55);
  border: 1px solid #2a2e3a;
}

.barra {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: linear-gradient(#262b38, #20242f);
  border-bottom: 1px solid #2a2e3a;
}
.semaforo { display: flex; gap: 7px; }
.semaforo span { width: 12px; height: 12px; border-radius: 50%; }
.semaforo span:nth-child(1){ background:#ff5f57; }
.semaforo span:nth-child(2){ background:#febc2e; }
.semaforo span:nth-child(3){ background:#28c840; }
.titulo { font-size: 13px; color: #9aa1b2; }

.cuerpo { display: flex; }
.lienzo {
  width: 480px;
  min-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at center, #171a22, #0e1015);
}
.lienzo canvas { display: block; border-radius: 8px; }

.panel {
  flex: 1;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-left: 1px solid #2a2e3a;
}

.controles { display: flex; gap: 8px; }
.btn {
  flex: 1;
  padding: 9px 12px;
  border: 1px solid #333a49;
  background: #242938;
  color: #e6e8ef;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  transition: .15s;
}
.btn:hover { background: #2c3244; }
.btn.primario { background: #2f6df6; border-color: #2f6df6; }
.btn.primario:hover { background: #3f79ff; }
.btn.activo { background: #e5484d; border-color: #e5484d; }

.chips { display: flex; gap: 8px; }
.chip {
  flex: 1;
  background: #20242f;
  border: 1px solid #2a2e3a;
  border-radius: 8px;
  padding: 8px;
  text-align: center;
}
.chip small { display: block; color: #7a8296; font-size: 10px; text-transform: uppercase; letter-spacing: .5px; }
.chip b { font-size: 15px; }

.tituloPanel { font-size: 12px; color: #7a8296; text-transform: uppercase; letter-spacing: .5px; }
.transcripcion {
  flex: 1;
  min-height: 180px;
  max-height: 260px;
  overflow-y: auto;
  background: #14171f;
  border: 1px solid #2a2e3a;
  border-radius: 8px;
  padding: 10px;
  font-size: 14px;
  line-height: 1.5;
}
.transcripcion p { margin: 0 0 6px; }
.transcripcion .parcial { color: #7a8296; }
.transcripcion .hint { color: #555c6e; }

.estado {
  padding: 8px 14px;
  font-size: 12px;
  color: #7a8296;
  border-top: 1px solid #2a2e3a;
  background: #191c24;
}

@media (max-width: 780px) {
  .cuerpo { flex-direction: column; }
  .lienzo { width: 100%; }
  .panel { border-left: none; border-top: 1px solid #2a2e3a; }
}