body {
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  margin: 0;
  padding: 0;
  overflow: hidden;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #e0e0e0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
  text-align: center;
}

#audio-warning {
  color: #f39c12;
  font-size: 1.6rem;
  margin-bottom: 30px;
  max-width: 480px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-shadow: 0 0 5px #f39c12aa;
}

#start-btn {
  padding: 18px 50px;
  background: #1abc9c;
  border: none;
  border-radius: 12px;
  color: white;
  font-size: 1.8rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 6px 15px rgba(26, 188, 156, 0.7);
  transition: background-color 0.25s ease, box-shadow 0.25s ease;
  letter-spacing: 0.08em;
}

#start-btn:hover,
#start-btn:focus {
  background-color: #16a085;
  box-shadow: 0 8px 20px rgba(22, 160, 133, 0.85);
  outline: none;
}

#dancer,
#dancer-img {
  display: none;
  position: fixed;
  left: 50%;
  user-select: none;
  pointer-events: none;
  transform: translateX(-50%);
  z-index: 5;
}

#dancer {
  top: 30%;
  font-weight: 900;
  font-size: 4rem;
  color: #e74c3c;
  text-shadow: 0 0 12px #e74c3cdd;
  letter-spacing: 0.1em;
  font-family: 'Segoe UI Black', Tahoma, Geneva, Verdana, sans-serif;
}

#dancer-img {
  top: 70%;
  width: 35%;
  height: auto;
  filter: drop-shadow(0 7px 10px rgba(0, 0, 0, 0.4));
  border-radius: 18px;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.25);
}

.login-container {
  background: rgba(30, 30, 30, 0.85);
  padding: 50px 60px;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
  max-width: 400px;
  width: 90%;
  text-align: center;
  color: #ddd;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.login-container h1 {
  font-size: 3rem;
  margin-bottom: 35px;
  color: #1abc9c;
  text-shadow: 0 0 10px #1abc9caa;
  font-family: 'Segoe UI Black', Tahoma, Geneva, Verdana, sans-serif;
}

.login-container input {
  display: block;
  width: 100%;
  padding: 18px 20px;
  margin: 15px 0;
  border-radius: 10px;
  border: none;
  font-size: 1.3rem;
  font-weight: 600;
  background: #222;
  color: #eee;
  box-shadow: inset 0 2px 5px rgba(255, 255, 255, 0.07);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.login-container input::placeholder {
  color: #666;
}

.login-container input:focus {
  outline: none;
  background-color: #1abc9c;
  color: #0f1c1c;
  box-shadow: 0 0 8px #1abc9c;
}

.login-container button {
  margin-top: 30px;
  padding: 18px 40px;
  background: #e74c3c;
  border: none;
  border-radius: 12px;
  color: white;
  font-size: 1.6rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 25px rgba(231, 76, 60, 0.8);
  letter-spacing: 0.06em;
  transition: background-color 0.25s ease, box-shadow 0.25s ease;
}

.login-container button:hover,
.login-container button:focus {
  background-color: #c0392b;
  box-shadow: 0 10px 30px rgba(192, 57, 43, 0.9);
  outline: none;
}
