body {
    font-family: sans-serif;
    background-color: #f0f0f0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 1rem 0;
}

* {
    box-sizing: border-box;
}

.hidden {
    display: none !important;
}

#comparison-container {
    background-color: #fff;
    padding: 2rem;
    border-radius: 24px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    width: 90%;
    max-width: 500px;
    text-align: center;
}

h1 {
    margin-top: 0;
}
h2 {
    margin-bottom: .5rem;
}

/* --- Song Selection Screen --- */
#song-list-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.song-select-btn {
    padding: 0.75rem 1.5rem;
    font-size: 1.1rem;
    cursor: pointer;
    border: 1px solid #ccc;
    border-radius: 7px;
    background-color: #f8f8f8;
    transition: background-color 0.2s;
}
.song-select-btn:hover {
    background-color: #eee;
}

/* --- Player Screen --- */
#loading-indicator {
    padding: 2rem 0;
    font-style: italic;
    color: #555;
}

#player-screen > p {
    margin: 1rem 0;
}

/* Source Selection Dropdowns */
#source-selectors {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}
.selector-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}
.source-select {
    padding: 0.5rem;
    font-size: 1rem;
    border-radius: 5px;
    border: 1px solid #ccc;
    min-width: 150px;
}

/* Player Controls */
.controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
}

button {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    cursor: pointer;
    border: 1px solid #ccc;
    border-radius: 100px;
    background-color: #eee;
    transition: background-color 0.2s;
}
#play-pause-btn:hover, #toggle-btn:hover, #back-to-list-btn:hover {
    background-color: #ddd;
}

#play-pause-btn {
    padding: 0.5rem .2rem;
    width: 80px;
}

#progress-slider {
    flex-grow: 1;
}

.toggle-container {
    margin-bottom: 2rem;
}

#now-playing {
    display: inline-block;
    width: 20px;
}

/* Reveal Answer Section */
#reveal-container {
    margin-bottom: 1.5rem;
}
#answer-display {
    margin-top: 1rem;
    padding: 1rem;
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    line-height: 1.6;
    text-align: left;
}

#back-to-list-btn {
    margin-top: 1rem;
}