body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
    background-color: #eaeaea;
    overflow: hidden; /* Prevent scrollbars */
}

.container {
    text-align: center;
    width: 100%;
    max-width: 400px;
    height: 100%; /* Ensure full height usage */
    display: flex;
    flex-direction: column;
    justify-content: center;
}

#appTitle {
    font-size: 1rem;
    font-weight: bold;
    color: #666;
    margin-bottom: 20px;
    text-transform: uppercase;
}

#playButton {
    font-size: 2rem;
    font-weight: bold;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    background: linear-gradient(145deg, #e3e3e3, #cacaca);
    color: #333;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 40px auto;
    user-select: none; /* Prevent text selection */
    -webkit-user-select: none; /* Safari */
}

#playButton i {
    font-size: 48px;
}

#playButton:active {
    background: linear-gradient(145deg, #ff5f5f, #ff3f3f);
    color: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transform: scale(0.95);
}

.selector-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px; /* Reduced to fit on screen */
}

.selector-button {
    width: 80px;
    height: 40px;
    font-size: 1rem;
    border-radius: 20px;
    border: none;
    cursor: pointer;
    background: linear-gradient(145deg, #e3e3e3, #cacaca);
    color: #333;
    transition: all 0.3s ease;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
}

.selector-button.active {
    background: linear-gradient(145deg, #4CAF50, #43A047);
    color: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transform: scale(1.05);
}

.selector-button:not(.active):hover {
    background: linear-gradient(145deg, #d4d4d4, #b5b5b5);
}

.audio-indicator {
    width: 100%;
    height: 20px;
    background: linear-gradient(145deg, #ff5f5f, #ff3f3f);
    border-radius: 10px;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    transition: width 0.1s ease;
    visibility: hidden;
}