YT - Revert UI changes before late 2024 (CSS) by magma_craft

/* ==UserStyle==
@name           YT - Revert UI changes before late 2024 (CSS)
@namespace      example.com
@version        2025.03.18
@description    This userstyle will revert UI changes back to pre-late 2024 style, which includes old red colors (along with the old scrubber before December 2024)
@author         Magma_Craft
==/UserStyle== */

@-moz-document domain("youtube.com") {
/* Revert UI elements before late 2024 changes */
.ytp-cairo-refresh-signature-moments .ytp-play-progress, ytd-thumbnail-overlay-resume-playback-renderer[enable-refresh-signature-moments-web] #progress.ytd-thumbnail-overlay-resume-playback-renderer, .YtThumbnailOverlayProgressBarHostWatchedProgressBarSegmentModern, .YtChapteredProgressBarChapteredPlayerBarChapterRefresh, .YtChapteredProgressBarChapteredPlayerBarFillRefresh, .YtProgressBarLineProgressBarPlayedRefresh, yt-page-navigation-progress[enable-refresh-signature-moments-web] #progress.yt-page-navigation-progress, ytd-progress-bar-line[enable-refresh-signature-moments-web] .progress-bar-played.ytd-progress-bar-line, #logo-icon > .yt-spec-icon-shape.yt-icon.style-scope.yt-icon-shape > div > svg > g:first-of-type > path:first-of-type, .ytProgressBarLineProgressBarPlayed, .ytProgressBarPlayheadProgressBarPlayheadDot, div.ytp-scrubber-button.ytp-swatch-background-color { background: #ff0000 !important } 
div#end.style-scope.ytd-masthead .yt-spec-button-shape-next--size-m[aria-label="Create"] { height: 40px !important; border-radius: 50px !important; color: var(--yt-spec-icon-active-other) !important; background-color: transparent !important } 
div#end.style-scope.ytd-masthead .yt-spec-button-shape-next--size-m.yt-spec-button-shape-next--icon-leading[aria-label="Create"] .yt-spec-button-shape-next__button-text-content { display: none !important } 
div#end.style-scope.ytd-masthead .yt-spec-button-shape-next--size-m.yt-spec-button-shape-next--icon-leading[aria-label="Create"] .yt-spec-button-shape-next__icon { margin-left: -8px !important; margin-right: -8px !important } 
div#end.style-scope.ytd-masthead .yt-spec-button-shape-next--size-m.yt-spec-button-shape-next--icon-leading[aria-label="Create"] path { d: path("M14 13h-3v3H9v-3H6v-2h3V8h2v3h3v2zm3-7H3v12h14v-6.39l4 1.83V8.56l-4 1.83V6m1-1v3.83L22 7v8l-4-1.83V19H2V5h16z") }
div#end.style-scope.ytd-masthead .yt-spec-icon-badge-shape--style-overlay.yt-spec-icon-badge-shape--type-cart-refresh .yt-spec-icon-badge-shape__badge { color: #fff !important }
ytd-feed-filter-chip-bar-renderer[frosted-glass] ytd-button-renderer.ytd-feed-filter-chip-bar-renderer { background-color: transparent !important }
ytd-feed-filter-chip-bar-renderer[frosted-glass] #left-arrow-button.ytd-feed-filter-chip-bar-renderer, ytd-feed-filter-chip-bar-renderer[frosted-glass] #right-arrow-button.ytd-feed-filter-chip-bar-renderer { background-color: var(--yt-spec-base-background) !important }
ytd-feed-filter-chip-bar-renderer[frosted-glass] #left-arrow.ytd-feed-filter-chip-bar-renderer:after { background: linear-gradient(to right, var(--yt-spec-base-background) 20%, rgba(255, 255, 255, 0) 80%) !important }
ytd-feed-filter-chip-bar-renderer[frosted-glass] #right-arrow.ytd-feed-filter-chip-bar-renderer:before { background: linear-gradient(to left, var(--yt-spec-base-background) 20%, rgba(255, 255, 255, 0) 80%) !important }
ytd-masthead[frosted-glass=with-chipbar] #background.ytd-masthead, ytd-masthead[frosted-glass=without-chipbar] #background.ytd-masthead, ytd-app[frosted-glass-mode=with-chipbar] #frosted-glass.ytd-app, ytd-app[frosted-glass-mode=without-chipbar] #frosted-glass.ytd-app { background: var(--yt-spec-base-background) !important; backdrop-filter: none !important }

/* Revert SVG icons before late 2024 changes */
[d*="M22.146 11.146a.5.5 0 01-.353.854H20v7.5a1.5 1.5 0 01-1.5 1.5h-5v-7h-3v7h-5A1.5 1.5 0 014 19.5V12H2.207a.5.5 0 01-.353-.854L12 1l10.146 10.146ZM18.5 9.621l-6.5-6.5-6.5 6.5V19.5H9V13a.5.5 0 01.5-.5h5a.5.5 0 01.5.5v6.5h3.5V9.621Z"] { d: path("m12 4.44 7 6.09V20h-4v-6H9v6H5v-9.47l7-6.09m0-1.32-8 6.96V21h6v-6h4v6h6V10.08l-8-6.96z") }
[d*="M22.146 11.146a.5.5 0 01-.353.854H20v7.5a1.5 1.5 0 01-1.5 1.5H14v-8h-4v8H5.5A1.5 1.5 0 014 19.5V12H2.207a.5.5 0 01-.353-.854L12 1l10.146 10.146Z"] { d: path("M4 21V10.08l8-6.96 8 6.96V21h-6v-6h-4v6H4z") }
[d*="m7.61 15.719.392-.22v-2.24l-.534-.228-.942-.404c-.869-.372-1.4-1.15-1.446-1.974-.047-.823.39-1.642 1.203-2.097h.001L15.13 3.59c1.231-.689 2.785-.27 3.466.833.652 1.058.313 2.452-.879 3.118l-1.327.743-.388.217v2.243l.53.227.942.404c.869.372 1.4 1.15 1.446 1.974.047.823-.39 1.642-1.203 2.097l-.002.001-8.845 4.964-.001.001c-1.231.688-2.784.269-3.465-.834-.652-1.058-.313-2.451.879-3.118l1.327-.742Zm1.993 6.002c-1.905 1.066-4.356.46-5.475-1.355-1.057-1.713-.548-3.89 1.117-5.025a4.14 4.14 0 01.305-.189l1.327-.742-.942-.404a4.055 4.055 0 01-.709-.391c-.963-.666-1.578-1.718-1.644-2.877-.08-1.422.679-2.77 1.968-3.49l8.847-4.966c1.905-1.066 4.356-.46 5.475 1.355 1.057 1.713.548 3.89-1.117 5.025a4.074 4.074 0 01-.305.19l-1.327.742.942.403c.253.109.49.24.709.392.963.666 1.578 1.717 1.644 2.876.08 1.423-.679 2.77-1.968 3.491l-8.847 4.965ZM10 14.567a.25.25 0 00.374.217l4.45-2.567a.25.25 0 000-.433l-4.45-2.567a.25.25 0 00-.374.216v5.134Z"] { d: path("M10 14.65v-5.3L15 12l-5 2.65zm7.77-4.33-1.2-.5L18 9.06c1.84-.96 2.53-3.23 1.56-5.06s-3.24-2.53-5.07-1.56L6 6.94c-1.29.68-2.07 2.04-2 3.49.07 1.42.93 2.67 2.22 3.25.03.01 1.2.5 1.2.5L6 14.93c-1.83.97-2.53 3.24-1.56 5.07.97 1.83 3.24 2.53 5.07 1.56l8.5-4.5c1.29-.68 2.06-2.04 1.99-3.49-.07-1.42-.94-2.68-2.23-3.25zm-.23 5.86-8.5 4.5c-1.34.71-3.01.2-3.72-1.14-.71-1.34-.2-3.01 1.14-3.72l2.04-1.08v-1.21l-.69-.28-1.11-.46c-.99-.41-1.65-1.35-1.7-2.41-.05-1.06.52-2.06 1.46-2.56l8.5-4.5c1.34-.71 3.01-.2 3.72 1.14.71 1.34.2 3.01-1.14 3.72L15.5 9.26v1.21l1.8.74c.99.41 1.65 1.35 1.7 2.41.05 1.06-.52 2.06-1.46 2.56z") }
[d*="M18.45 8.851c1.904-1.066 2.541-3.4 1.422-5.214-1.119-1.814-3.57-2.42-5.475-1.355L5.55 7.247c-1.29.722-2.049 2.069-1.968 3.491.081 1.423.989 2.683 2.353 3.268l.942.404-1.327.742c-1.904 1.066-2.541 3.4-1.422 5.214 1.119 1.814 3.57 2.421 5.475 1.355l8.847-4.965c1.29-.722 2.049-2.068 1.968-3.49-.081-1.423-.989-2.684-2.353-3.269l-.942-.403 1.327-.743ZM10 14.567a.25.25 0 00.374.217l4.45-2.567a.25.25 0 000-.433l-4.45-2.567a.25.25 0 00-.374.216v5.134Z"] { d: path("m17.77 10.32-1.2-.5L18 9.06c1.84-.96 2.53-3.23 1.56-5.06s-3.24-2.53-5.07-1.56L6 6.94c-1.29.68-2.07 2.04-2 3.49.07 1.42.93 2.67 2.22 3.25.03.01 1.2.5 1.2.5L6 14.93c-1.83.97-2.53 3.24-1.56 5.07.97 1.83 3.24 2.53 5.07 1.56l8.5-4.5c1.29-.68 2.06-2.04 1.99-3.49-.07-1.42-.94-2.68-2.23-3.25zM10 14.65v-5.3L15 12l-5 2.65z") }
[d*="M4 4.5A1.5 1.5 0 015.5 3h13A1.5 1.5 0 0120 4.5H4Zm16.5 3h-17v11h17v-11ZM3.5 6A1.5 1.5 0 002 7.5v11A1.5 1.5 0 003.5 20h17a1.5 1.5 0 001.5-1.5v-11A1.5 1.5 0 0020.5 6h-17Zm7.257 4.454a.5.5 0 00-.757.43v4.233a.5.5 0 00.757.429L15 13l-4.243-2.546Z"] { d: path("M10 18v-6l5 3-5 3zm7-15H7v1h10V3zm3 3H4v1h16V6zm2 3H2v12h20V9zM3 10h18v10H3V10z") }
[d*="M5.5 3A1.5 1.5 0 004 4.5h16A1.5 1.5 0 0018.5 3h-13ZM2 7.5A1.5 1.5 0 013.5 6h17A1.5 1.5 0 0122 7.5v11a1.5 1.5 0 01-1.5 1.5h-17A1.5 1.5 0 012 18.5v-11Zm8 2.87a.5.5 0 01.752-.431L16 13l-5.248 3.061A.5.5 0 0110 15.63v-5.26Z"] { d: path("M20 7H4V6h16v1zm2 2v12H2V9h20zm-7 6-5-3v6l5-3zm2-12H7v1h10V3z") }
[d*="M14.203 4.83c-1.74-.534-3.614-.418-5.274.327-1.354.608-2.49 1.6-3.273 2.843H8.25c.414 0 .75.336.75.75s-.336.75-.75.75H3V4.25c0-.414.336-.75.75-.75s.75.336.75.75v2.775c.935-1.41 2.254-2.536 3.815-3.236 1.992-.894 4.241-1.033 6.328-.392 2.088.641 3.87 2.02 5.017 3.878 1.146 1.858 1.578 4.07 1.215 6.223-.364 2.153-1.498 4.1-3.19 5.48-1.693 1.379-3.83 2.095-6.012 2.016-2.182-.08-4.26-.949-5.849-2.447-1.588-1.499-2.578-3.523-2.784-5.697-.039-.412.264-.778.676-.817.412-.04.778.263.818.675.171 1.812.996 3.499 2.32 4.748 1.323 1.248 3.055 1.973 4.874 2.04 1.818.065 3.598-.532 5.01-1.681 1.41-1.15 2.355-2.773 2.657-4.567.303-1.794-.056-3.637-1.012-5.186-.955-1.548-2.44-2.697-4.18-3.231ZM12.75 7.5c0-.414-.336-.75-.75-.75s-.75.336-.75.75v4.886l.314.224 3.5 2.5c.337.241.806.163 1.046-.174.241-.337.163-.806-.174-1.046l-3.186-2.276V7.5Z"] { d: path("M14.97 16.95 10 13.87V7h2v5.76l4.03 2.49-1.06 1.7zM22 12c0 5.51-4.49 10-10 10S2 17.51 2 12h1c0 4.96 4.04 9 9 9s9-4.04 9-9-4.04-9-9-9C8.81 3 5.92 4.64 4.28 7.38c-.11.18-.22.37-.31.56L3.94 8H8v1H1.96V3h1v4.74c.04-.09.07-.17.11-.25.11-.22.23-.42.35-.63C5.22 3.86 8.51 2 12 2c5.51 0 10 4.49 10 10z") }
[d*="M3.75 5c-.414 0-.75.336-.75.75s.336.75.75.75h16.5c.414 0 .75-.336.75-.75S20.664 5 20.25 5H3.75Zm0 4c-.414 0-.75.336-.75.75s.336.75.75.75h16.5c.414 0 .75-.336.75-.75S20.664 9 20.25 9H3.75Zm0 4c-.414 0-.75.336-.75.75s.336.75.75.75h8.5c.414 0 .75-.336.75-.75s-.336-.75-.75-.75h-8.5Zm8.5 4c.414 0 .75.336.75.75s-.336.75-.75.75h-8.5c-.414 0-.75-.336-.75-.75s.336-.75.75-.75h8.5Zm3.498-3.572c-.333-.191-.748.05-.748.434v6.276c0 .384.415.625.748.434L22 17l-6.252-3.572Z"] { d: path("M22 7H2v1h20V7zm-9 5H2v-1h11v1zm0 4H2v-1h11v1zm2 3v-8l7 4-7 4z") }
[d*="M4 5c-.552 0-1 .448-1 1s.448 1 1 1h16c.552 0 1-.448 1-1s-.448-1-1-1H4Zm-1 5c0-.552.448-1 1-1h16c.552 0 1 .448 1 1s-.448 1-1 1H4c-.552 0-1-.448-1-1Zm11 3.862c0-.384.415-.625.748-.434L21 17l-6.252 3.573c-.333.19-.748-.05-.748-.435v-6.276ZM4 13c-.552 0-1 .448-1 1s.448 1 1 1h6c.552 0 1-.448 1-1s-.448-1-1-1H4Zm-1 5c0-.552.448-1 1-1h6c.552 0 1 .448 1 1s-.448 1-1 1H4c-.552 0-1-.448-1-1Z"] { d: path("M15 19v-8l7 4-7 4Zm7-12H2v2h20V7Zm-9 6H2v-2h11v2Zm0 4H2v-2h11v2Z") }
[d*="M3.5 5.5h17v13h-17v-13ZM2 5.5C2 4.672 2.672 4 3.5 4h17c.828 0 1.5.672 1.5 1.5v13c0 .828-.672 1.5-1.5 1.5h-17c-.828 0-1.5-.672-1.5-1.5v-13Zm7.748 2.927c-.333-.19-.748.05-.748.435v6.276c0 .384.415.625.748.434L16 12 9.748 8.427Z"] { d: path("m10 8 6 4-6 4V8zm11-5v18H3V3h18zm-1 1H4v16h16V4z") }
[d*="M20.5 12c0 4.694-3.806 8.5-8.5 8.5S3.5 16.694 3.5 12 7.306 3.5 12 3.5s8.5 3.806 8.5 8.5Zm1.5 0c0 5.523-4.477 10-10 10S2 17.523 2 12 6.477 2 12 2s10 4.477 10 10Zm-9.25-5c0-.414-.336-.75-.75-.75s-.75.336-.75.75v5.3...