body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: linear-gradient(135deg, #111827, #1f2937);
  color: #f3f4f6;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  width: 90%;
  max-width: 500px;
}

h1 {
  text-align: center;
  margin-bottom: 1rem;
  font-size: 2rem;
}

.card {
  background: #1e293b;
  padding: 1.5rem;
  border-radius: 1rem;
  box-shadow: 0 6px 12px rgba(0,0,0,0.4);
  text-align: center;
}

.hidden {
  display: none;
}

input {
  width: 100%;
  padding: 0.75rem;
  border: none;
  border-radius: 0.5rem;
  margin-bottom: 0.75rem;
  background: #334155;
  color: white;
  font-size: 1rem;
}

input::placeholder {
  color: #94a3b8;
}

button {
  background: #3b82f6;
  border: none;
  border-radius: 0.5rem;
  color: white;
  padding: 0.75rem 1.2rem;
  font-size: 1rem;
  cursor: pointer;
  margin: 0.3rem;
  transition: background 0.2s ease;
}

button:hover {
  background: #2563eb;
}

#songArea {
  margin-top: 1rem;
}

#players {
  margin-top: 1rem;
  text-align: left;
}

#roomHeader {
  margin-bottom: 0.5rem;
}