Youtube : Change the number of columns of thumbnails, Remove the YouTube Mixes/Trends from the Home page, Divides the Trends column in two, Disables interaction on black bands, Delete button : "Automatic playback", "PIP". by sunkwi

/* ==UserStyle==
@name         Youtube : Reduces thumbnails, splits Youtube trends and disables interaction on black bands.
@version      20220118.03.53
@namespace    userstyles.world/user/sunkwi
@description  Change the number of columns of thumbnails,
Remove the YouTube Mixes/Trends from the Home page,
Divides the Trends column in two,
Disables interaction on black bands,
Delete button : "Automatic playback", "PIP".
@author       sunkwi
@license      No License
==/UserStyle== */

@-moz-document domain("www.youtube.com") {
/* LECTEUR */

@media (min-width: 720px) { /* ECRAN 1080p et - */
    ytd-watch-flexy {
        --player-height: calc((100vh / 1.28) - 1px);
    }

    ytd-watch-flexy[theater]:not([fullscreen]) #player-theater-container {
        height: calc( var(--ytd-watch-flexy-height-ratio) / var(--ytd-watch-flexy-width-ratio) * 100vw) !important;
        max-height: var(--player-height) !important;
        min-height: 0px !important;
    }

    ytd-watch-flexy[theater]:not([fullscreen]) #ytd-player {
        width: calc( var(--ytd-watch-flexy-width-ratio) / var(--ytd-watch-flexy-height-ratio) * var(--player-height));
        max-width: 100vw !important;
        min-width: 350px !important;
        display: block !important;
        margin: auto !important;
    }

    ytd-watch-flexy:not([theater]):not([fullscreen]) #primary.ytd-watch-flexy, ytd-watch-flexy:not([theater]):not([fullscreen]) #secondary.ytd-watch-flexy {
        padding-top: 0 !important;
    }
}

@media (min-width: 1921px) { /* ECRAN 1440p et + */
    ytd-watch-flexy {
        --player-height: calc((100vh / 1.2) - 1px);
    }

    ytd-watch-flexy[theater]:not([fullscreen]) #player-theater-container {
        height: calc( var(--ytd-watch-flexy-height-ratio) / var(--ytd-watch-flexy-width-ratio) * 100vw) !important;
        max-height: var(--player-height) !important;
        min-height: 0px !important;
    }

    ytd-watch-flexy[theater]:not([fullscreen]) #ytd-player {
        width: calc( var(--ytd-watch-flexy-width-ratio) / var(--ytd-watch-flexy-height-ratio) * var(--player-height));
        max-width: 100vw !important;
        min-width: 350px !important;
        display: block !important;
        margin: auto !important;
    }

    ytd-watch-flexy:not([theater]):not([fullscreen]) #primary.ytd-watch-flexy, ytd-watch-flexy:not([theater]):not([fullscreen]) #secondary.ytd-watch-flexy {
        padding-top: 0 !important;
    }
}

/* ACCUEIL/TENDANCES */

@media (min-width: 1330px) {
    ytd-rich-grid-renderer {
        --ytd-rich-grid-items-per-row:5 !important; /* Change le nombre de colonnes de miniatures */
    }
}

@media (min-width: 1625px) {
    ytd-rich-grid-renderer {
        --ytd-rich-grid-items-per-row:6 !important; /* Change le nombre de colonnes de miniatures */
    }
}

@media (min-width: 1950px) {
    ytd-rich-grid-renderer {
        --ytd-rich-grid-items-per-row:7 !important; /* Change le nombre de colonnes de miniatures */
    }
}

@media (min-width: 2340px) {
    ytd-rich-grid-renderer {
        --ytd-rich-grid-items-per-row:8 !important; /* Change le nombre de colonnes de miniatures */
    }
}

@media (min-width: 2800px) {
    ytd-rich-grid-renderer {
        --ytd-rich-grid-items-per-row:9 !important; /* Change le nombre de colonnes de miniatures */
    }
}

ytd-rich-section-renderer {
    display:none; /* Supprime si tu veux garder le YouTube Mixes/Tendances sur la page d'Accueil*/
} 

#grid-container.ytd-expanded-shelf-contents-renderer > *.ytd-expanded-shelf-contents-renderer {
    width: 50% !important; /* Divise la colonne de Tendances en deux */
}

#grid-header.ytd-rich-grid-renderer {
    margin: 18px 0 20px 24px;
}

#avatar-link.ytd-rich-grid-video-renderer {
    margin: 8px 8px 0 0;
}

#meta.ytd-rich-grid-video-renderer {
    padding-right: 20px;
}

ytd-rich-item-renderer {
    margin-bottom: 14px;
}

h3.ytd-rich-grid-video-renderer {
    margin: 7px 0 4px 0;
}

#title.ytd-rich-grid-renderer, #title.ytd-rich-shelf-renderer {
    font-size: 1.8rem;
}

ytd-video-meta-block[rich-meta] #channel-name.ytd-video-meta-block, ytd-video-meta-block[rich-meta] #metadata-line.ytd-video-meta-block {
    font-size: 1.3rem;
    line-height: 1.7rem;
}

#video-title.ytd-rich-grid-video-renderer {
    font-size: 1.5rem;
    line-height: 2rem;
    max-height: 4rem;
}

ytd-video-renderer[use-prominent-thumbs] ytd-thumbnail.ytd-video-renderer{
    max-width:240px !important;
}

/* TOP */

#page-manager.ytd-app {
    margin-top: var(--ytd-masthead-height, 50px) !important;
    
}

#container.ytd-masthead {
    height: 50px !important;
}

#guide-spacer.ytd-app {
    margin-top: var(--ytd-masthead-height, 50px) !important;
}

ytd-watch-flexy[flexy_][is-two-columns_][is-extra-wide-video_] #primary.ytd-watch-flexy, ytd-watch-flexy[flexy_][is-two-columns_][is-four-three-to-sixteen-nine-video_] #primary.ytd-watch-flexy{
    max-width: unset !important;
}

/* MISC */

.ytp-right-controls [class="ytp-button"],[class="ytp-miniplayer-button ytp-button"] {
    display: none !important; /* Supprime des boutons du lecteur que j'utilise pas */
}

.ytp-volume-panel,[class="ytp-button ytp-settings-button"] {
    display: inline-block !important;
}

#like-bar.ytd-sentiment-bar-renderer {
    background: #00fffd !important;
}

#container.ytd-sentiment-bar-renderer {
    background-color: #f00 !important;
}

::-webkit-scrollbar {display: none;}
}