body {
    margin: 0;
    padding: 0;
}

#player {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: #000;
    width: 100%;
    max-width: 800px;
    aspect-ratio: 4 / 3;
    height: 600px;
    margin: 10px auto;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.9);
}

.video-container-wrapper {
    flex-grow: 1;
    width: 100%;
}

.buttons-wrapper {
    margin-bottom: 10px;
    align-self: stretch;
    width: 100%;
    height: 25px;
    background: black;
    flex-shrink: 0;
}

.player-controls {
    height: 30px;
    min-width: 30px;
    display: flex;
    flex-direction: row;
    align-items: center;
}

.player-controls-spacer {
    flex: 1 1 auto;
    min-width: 0;
}


.btn {
    text-align: center;
    border: none;
    font-size: 19px;
    cursor: pointer;
    background-color: transparent;

    min-width: 36px;
    min-height: 36px;
    padding: 6px;
    border-radius: 8px;
    transition: background-color 0.15s ease, outline-color 0.15s ease;

}
.btn:hover {
    background-color: rgba(255, 255, 255, 0.10);
}
.btn:active {
    background-color: rgba(255, 255, 255, 0.16);
}
.btn:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.35);
    outline-offset: 2px;
}

.btn > .btn-icon {
    color: #fff;
}