body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    height: 100vh;
    height: 100dvh; /* Use dynamic viewport height for better mobile support */
    overflow: hidden;
}
#left-panel {
    width: 33%;
    min-width: 100px;
    background-color: #f8f8f8;
    padding: 20px;
    overflow-y: auto;
    height: 100%;
    box-sizing: border-box;
}
#right-panel {
    width: 67%;
    padding: 10px;
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow-y: auto;
    box-sizing: border-box;
}
.file-item {
    cursor: pointer;
    padding: 8px;
    margin-bottom: 4px;
    background-color: #e0e0e0;
    border-radius: 4px;
    transition: background-color 0.5s;
}
.file-item:hover {
    background-color: #d0d0d0;
}
.file-item.active {
    background-color: #4CAF50;
    color: white;
    font-weight: bold;
    border-left: 4px solid #2E7D32;
}
.file-item.active .file-item-description {
    color: #e8f5e9;
}
.file-item-description {
    font-size: 0.85em;
    color: #888;
    margin-top: 3px;
    font-style: italic;
}
#file-name {
    font-size: 1.2em;
    font-weight: bold;
    margin-bottom: 2px;
}
#file-desc {
    font-size: 0.8em;
    margin-bottom: 2px;
    display: block;
    color: #424242;
}
#play-status {
    font-size: 0.5em;
    margin-bottom: 2px;
    color: gray;
    font-size: 0.8em;
}
#controls {
    display: flex;
    gap: 10px;
    margin-bottom: 2px;
}
span.icon {
    font-size: 1.2em;
    position: relative;
    top: -2px;
    left: -2px;
    margin-right: 2px;
}
span.button-text {
    font-size: 1.2em;
    position: relative;
    top: -5px;
}
button {
    height: 40px;
    width: 120px;
    cursor: pointer;
    vertical-align: middle;
}
.inc-dec-button {
    padding: 4px 8px;
    font-size: 16px;
    height: 30px;
    width: 60px;
}
#speed-control {
    margin-top: 8px;
    width: 100%;
    display: flex;
    align-items: center;
    flex-direction: column;
}
#speed-slider, #play-time {
    width: 100%;
}
#speed-wrapper {
    margin-top: 0px;
}
#autoplay-control {
    margin-top: 8px;
    margin-bottom: 2px;
    width: 100%;
    display: flex;
    align-items: left;
    justify-content: left;
}
#autoplay-control label {
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    font-size: 0.8em;
    padding: 4px 12px;
    background-color: #f0f0f0;
    border-radius: 4px;
    transition: background-color 0.5s;
}
#autoplay-control label:hover {
    background-color: #e0e0e0;
}
#autoplay-checkbox {
    cursor: pointer;
    width: 18px;
    height: 18px;
}
.hidden {
    display: none;
}

#folder-select {
    width: 100%;
    margin-bottom: 8px;
    height: 30px;
    font-size: 16px;
    padding: 0 8px;
    line-height: 30px;
    box-sizing: border-box;
}