Youtube Thumbnail Declutterer by o_o

/* ==UserStyle==
@name         Youtube Thumbnail Declutterer
@namespace    dabric.xyz/post/thumbnail-declutterer/
@version      2.1.0
@license      MIT
@preprocessor stylus
@var checkbox rounded "Round thumbnails" 1
@var checkbox rounded-progress "Round progress bar" 0
@var checkbox reverse-overlays "Show timestamp first" 0
@var checkbox coverThumbnailPlaylist "Overlay over thumbnail in playlists" 0
==/UserStyle== */
@-moz-document domain("youtube.com") {
    ytd-thumbnail {
      // this sorta sets the size of the thumbnail and
      // functions as a placeholder as the image loads.
      // however, we don't need this as the thumbnail itself
      // does the sizing and placeholder in this userstyle
      &::before {
          content: unset !important;
      }
      
      // fix for channel video carousel
      &.ytd-grid-video-renderer {
        height: auto !important;
      }
      
      a#thumbnail {
        display: flex !important;
        flex-direction: column;       
        position: relative !important;
        min-height: 100% !important;
        height: unset !important;
        
        unless rounded {
          border-radius: 0px !important;
        }

        yt-image {
          overflow: hidden;
          position: relative;
          background-color: var(--yt-spec-10-percent-layer) !important;
        
          img {
            width: 100% !important;
            height: auto !important;
            display: block !important;
            aspect-ratio: 720 / 404 !important; 
            
            ytd-rich-grid-slim-media[is-short] & {
                aspect-ratio: 405 / 720 !important;
            }
            
            .ytd-movie-renderer & {
                aspect-ratio: 156 / 224 !important;
            }
            
            
          }
          
          // dearrow support. it swaps the img with a new element, kinda.
          // the new image never unmounts when you toggle it on and off,
          // which causes an undesired effect with our css
          .cbCustomThumbnailCanvas {
            position: absolute;
            inset: 0;
          }
           img:not([style*="display: none"]) ~ .cbCustomThumbnailCanvas {
            display: none !important;
          }
        }

        #overlays {
          display: flex;
          justify-content: flex-end;
          
          align-items: center;
          gap: 10px;
          padding: 4px 8px;
          
          if reverse-overlays {
            flex-direction: row-reverse;
          }
          
          
          // fix for youtube shorts
          &:empty {
            padding: 0;
          }
          

          > * {
            position: static;
            display: block !important;
          }
          
          // progress bar
          ytd-thumbnail-overlay-resume-playback-renderer {
            flex-grow: 1;
            
            if rounded-progress {
              border-radius: 9999px;
              overflow: hidden;
              #progress {
                border-radius: 9999px;
                border-top-right-radius: 0;
                border-bottom-right-radius: 0;
              }
            }
          }
          
          // time stamp
          ytd-thumbnail-overlay-time-status-renderer {
            margin: 0;
            #time-status {
              background-color: transparent !important;
              padding: 0;
              margin: 0;
              
              html:not([dark]) & {
                  color: black;
                  
                  // used for shorts
                  yt-icon {
                      color: black
                  }
              }
            }
          }
          
          // unsure what this does.
          // let's just give its `position: absolute` back
          // and hope it still works
          // 
          // 2023-03-19 - i dont see this in #overlays anymore?
          ytd-badge-supported-renderer {
            position: absolute;
          }
          
          // shown when the video is playing in the current queue
          ytd-thumbnail-overlay-now-playing-renderer {
            position: absolute;
            top: 0;
            bottom: 0;
            left: 0;
            right: 0;
            display: flex !important;
            gap: 8px;
            
            
            ytd-thumbnail-overlay-equalizer {
              position: static;
              margin: 0;
              transform: translateY(-10px);
            }
          }
        }
        
        // this contains stuff like the video preview
        // by default the video preview will absolute stretch to cover,
        // which results in a warped preview because now the thumbnail
        // is technically larger.
        
        // this is a hacky solution and uses magic numbers.
        // however, i'm tired right now, and this largely works fine anyways.
        #mouseover-overlay {
          position: absolute;
          top: 0;
          bottom: 21px;
          left: 0;
          right: 0;
          overflow: hidden;
        }
      }
    }
    
    
      // style for recommended
  ytd-compact-video-renderer:not([watch-feed-big-thumbs]) ytd-thumbnail.ytd-compact-video-renderer {
    height: unset;
    #overlays {
      gap: 8px !important;
      padding: 4px 6px !important;
      padding-bottom: 0 !important;
    }
    
    // part of a hack
    #mouseover-overlay {
          bottom: 17px !important;
    }
  }
  
  
  // style for playlists 
  ytd-playlist-panel-video-renderer {
    if coverThumbnailPlaylist {
      ytd-thumbnail {      
        a#thumbnail {    
          #overlays {
            position: absolute !important;
            bottom: 0;
            left: 0;
            right: 0;
            background: hsla(0, 0%, 0%, .75);
            padding: 4px 6px;
            gap: 8px;
          }
        }
      }  
    } else {
      // also color the timestamp to fit in
      &[selected][use-color-palette] {
        ytd-thumbnail #overlays {
          #time-status {
            color: var(--yt-lightsource-primary-title-color) !important;
          }
          ytd-thumbnail-overlay-resume-playback-renderer {
            // add a lil color to the progress bar background
            background: #ffffff50
            
            html:not([dark]) & {
                  background: #00000050
            }
          }
        }
      }
      
      // squish the title a bit more to make room
      #video-title {
        margin-bottom: 1px !important;
        -webkit-line-clamp: 1 !important;
      }
      
      #thumbnail-container {
        overflow: visible !important;
      
        ytd-thumbnail {      
            a#thumbnail { 
              overflow: visible !important;
              #overlays {
                position: absolute !important;
                bottom: 0;
                left: 100%;
                width: 100%;
                flex-direction: row-reverse;
            
                padding: 0px 6px;
                padding-left: 8px
                gap: 8px;
              }
            }
          }  
        }
      }
    }
  
  
  if rounded {
    ytd-thumbnail[size=large] :is(yt-image, #mouseover-overlay) {
      border-radius:12px
    }
    ytd-thumbnail[size=medium] :is(yt-image, #mouseover-overlay) {
      border-radius:8px
    }
    ytd-thumbnail[size=small] :is(yt-image, #mouseover-overlay) {
      border-radius:4px
    }
  }
}