body {
  font-family: Arial, sans-serif;
  background: #f0f0f0;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 50px 0;
  margin: 0;
}

.container {
  background: white;
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
  width: 100%;
  max-width: 500px;
  text-align: center;
}

h1 {
  margin-bottom: 30px;
}
h2 {
  margin-top: 30px;
}

.input-group {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

input {
  flex: 1;
  padding: 10px;
  border-radius: 5px;
  border: 1px solid #ccc;
}

button {
  padding: 10px 15px;
  border: none;
  background: #0070f3;
  color: white;
  border-radius: 5px;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background: #005bb5;
}

ul {
  list-style: none;
  padding: 0;
  text-align: left;
}

li {
  background: #f9f9f9;
  padding: 10px;
  margin-bottom: 10px;
  border-radius: 5px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

li.completed {
  text-decoration: line-through;
  color: gray;
}

.timer p {
  font-size: 2em;
  margin: 10px 0;
}

.music-section {
  margin-top: 30px;
  padding: 20px;
  background: #f8f9fa;
  border-radius: 10px;
  border: 1px solid #eee;
}

.volume-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 15px;
  font-size: 14px;
}

#trackName {
  font-size: 0.9em;
  color: #666;
  margin-bottom: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.button-group {
  display: flex;
  justify-content: center;
  gap: 10px;
}

#customUploadBtn {
  background: #6c757d;
}
#customUploadBtn:hover {
  background: #5a6268;
}