blockscout/apps/block_scout_web/assets/css/theme/_dark-theme.scss

$body-dark: #1c1d31; // body background
$dark-bg: #22223a; // hero shade
$dark-light-bg: #282945; // pills bg shade
$dark-light: #313355; // tile light top share
$labels-dark: #8a8dba; // header nav, labels

// Switcher
.dark-mode-changer {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 36px;
	height: 36px;
	background: transparent;
	border: none;
	cursor: pointer;
	margin-right: 5px;
	outline: none !important;
	box-shadow: none !important;
	transition: .2s ease-in;
	&:hover {
		opacity: .8;
	}
	svg path {
		fill: #828ba0;
	}
	&--dark {
		svg path {
			fill: $dark-primary;
		}
	}
}

.dark-theme-applied {
	color: #fff;

	// navbar
	.navbar.navbar-primary {
		background-color: $dark-light-bg;
	}
	.navbar-brand .navbar-logo {
		filter: brightness(0) invert(1);
	}
	.navbar.navbar-primary .navbar-nav .nav-link {
		color: $labels-dark;
		.nav-link-icon {
			svg path {
				fill: $labels-dark;
			}
		}
		&.active, &:hover {
			.nav-link-icon {
				svg path {
					fill: $dark-primary;
				}
			}
			&:before {
				background-color: $dark-primary;
			}
		}
	}
	.navbar.navbar-primary .form-control {
		background-color: $dark-bg;
		border-color: $dark-bg;
		color: #fff;
		&::placeholder {
			color: $labels-dark;
		}
	}
	.navbar.navbar-primary .navbar-toggler .navbar-toggler-icon {
		filter: invert(1);
	}

	// footer
	.footer {
		background: $dark-light-bg;
		color: $labels-dark;
	}
	.footer-social-icon,
	.footer-link {
		color: $labels-dark;
	}
	.footer-social-icon:hover,
	.footer-link:hover {
		color: #fff;
	}
	.footer-list ul li::before {
		background-color: $dark-secondary;
	}

	// hero stats

	.layout-container .dashboard-banner-container {
		background-image: none;
		background-color: $dark-bg;
	}
	.dashboard-banner-network-plain-container,
	.dashboard-banner-network-plain-container::after {
		background-color: $dark-light-bg;
	}
	.dashboard-banner-network-stats-label,
	.dashboard-banner-chart-legend .dashboard-banner-chart-legend-label {
		color: $labels-dark;
	}
	.dashboard-banner-chart-legend .dashboard-banner-chart-legend-item:nth-child(1)::before {
		background-color: $dark-primary;
	}
	.dashboard-banner-network-stats-item::before {
		background-color: $dark-secondary;
	}
	.dashboard-banner-chart-legend .dashboard-banner-chart-legend-item:nth-child(2)::before {
		background-color: $dark-secondary;
	}

	// main container, layout, cards
	.layout-container main {
		background-color: $body-dark;
	}

	.card {
		background-color: $dark-light-bg;
		box-shadow: 0 0 30px 0 rgba(23, 24, 41, 0.5);
	}

	.card-header {
		border-bottom-color: darken($labels-dark, 30);
	}

	.address-detail-hash-title {
		color: #fff;
	}

	.card-tabs {
		border-bottom-color: darken($labels-dark, 30);
	}

	.card-tab {
		background-color: transparent;
		&:hover:not(.active) {
			background-color: rgba($dark-primary, .15);
			color: $dark-primary;
		}
		&.active {
			background-color: $dark-primary-alternate;
			color: #fff;
		}
	}

	.card-background-1 {
		background-color: $dark-primary-alternate;
	}

	// Components
	a {
		color: $dark-primary;
	}

	.tile {
		border-top-color: $dark-light;
		border-bottom-color: $dark-light;
		border-right-color: $dark-light;
		background-color: $dark-light;
		color: $labels-dark;
		&:not([class^="tile tile-type"]) {
			border-left-color: $dark-light;
		}
		&.tile-type-coin-balance {
			border-left-color: $dark-light;
		}
		.tile-title {
			color: #fff;
		}
		.tile-transaction-type-block {
			background-color: transparent;
		}
	}
	.tile-bottom-contents {
		background-color: $dark-bg;
	}
	a.tile-title {
		color: #fff !important;
	}
	.tile.tile-type-block .tile-transaction-type-block a {
		color: #fff;
	}
	.fade-up-blocks-chain .tile-type-block-animation {
		background-color: $dark-light;
		border-top-color: $dark-light;
		border-right-color: $dark-light;
		border-bottom-color: $dark-light;
	}
	.fade-up-blocks-chain .tile-type-block-animation:after {
		background-color: $dark-light;
	}
	.cube-animation-title {
		color: $labels-dark;
	}
	.tile .tile-body a,
	.tile span[data-address-hash] { color: $dark-primary; }
	.fade-up-blocks-chain .tile-type-block-animation .tile-type-line-up {
		background-color: $dark-primary;
	}
	.tile.tile-type-block {
		border-left-color: $dark-primary
	}
	.tile.tile-type-block .tile-status-label {
		color: $dark-primary;
	}
	.tile.tile-type-block .tile-transaction-type-block {
		border-right-color: $dark-primary;
		border-top-color: $dark-primary;
		border-bottom-color: $dark-primary;
	}
	.tile .progress {
		background-color: rgba(#fff, .2);
	}
	.tile .progress .progress-bar {
		background-color: $dark-primary;
	}
	.tile .tile-title-lg:not([data-balance-change-sign]) {
		color: $dark-primary;
	}

	// btns

	.btn-line {
		background-color: transparent;
		border-color: $dark-primary;
		color: $dark-primary;
		&:hover {
			border-color: $dark-primary;
			background-color: $dark-primary;
			color: #fff;
		}
	}

	.btn-copy-icon, .btn-qr-icon, .btn-address-card-icon {
		border-color: $dark-primary;
		path {
			fill: $dark-primary;
		}
		&:hover {
			background-color: $dark-primary;
			path {
				fill: #fff;
			}
		}
	}

	// pagination
	.pagination-container .pagination .page-link {
		color: $labels-dark;
		border-color: $dark-light;
		background-color: $dark-light;
		&:not(.no-hover):hover {
			color: #fff;
			background-color: $dark-primary;
			path {
				fill: #fff;
			}
		}
		&[disabled] {
			color: $labels-dark;
			border-color: $dark-light;
			background-color: $dark-light;
		}
	}

	// dropdown
	.dropdown-menu {
		background-color: $dark-light;
		border-left-color: $dark-light;
		border-right-color: $dark-light;
		border-bottom-color: $dark-light;
	}

	.dropdown-item {
		color: #fff;
		&:hover {
			background-color: rgba(#fff, .1);
		}
	}
	.dropdown-item.active {
		background-color: $dark-primary;
	}
	.btn-dropdown-line {
		background-color: $dark-light;
		border-color: $dark-light;
		color: $labels-dark;
	}

	// table
	.stakes-table-th {
		background-color: $dark-light;
		color: $labels-dark;
	}
	.stakes-td {
		border-bottom-color: darken($labels-dark, 30);
	}
	.table th, .table td {
		border-top-color: darken($labels-dark, 30);
	}
	hr {
		border-top-color: darken($labels-dark, 30);
	}

	// api's
	.api-anchors-list {
		background-color: $dark-light;
	}
	.api-doc-list-item {
		border-bottom-color: darken($labels-dark, 30);
	}
	.card-subtitle,
	.api-anchors-list-item-title,
	.api-doc-list-item-title {
		color: #fff;
	}
	.api-text-monospace {
		color: $dark-primary;
	}
	.api-text-monospace-background {
		background-color: rgba($dark-primary, .15);
	}
	.badge.badge-neutral {
		background-color: rgba($dark-primary, .15);
		color: $dark-primary;
	}

	// download csv button
	.download-all-transactions .download-all-transactions-link svg path {
		fill: $dark-primary;
	}

	//tooltips
	.tooltip .arrow:before {
		border-top-color: $dark-primary;
    	border-bottom-color: $dark-primary;
	}
	.tooltip > .tooltip-inner {background-color: $dark-primary;}

	//network select
	.network-selector-overlay {
		background-color: rgba($dark-bg, .9);
	}
	.network-selector {
		background-color: $dark-light-bg;
	}
	.network-selector-title {
		color: #fff;
	}
	.network-selector-text {
		color: $labels-dark;
	}
	.network-selector-close path {
		fill: #fff;
	}
	.network-selector-search-container {
		background-color: $dark-light;
	}
	.network-selector-search-container path {
		fill: $labels-dark;
	}
	.network-selector-search-input {
		color: #fff !important;
		&::placeholder {
			color: $labels-dark;
		}
	}
	.network-selector-tab {
		color: $labels-dark;
		&:hover, &.active {
			color: #fff;
		}
		&.active {
			&:after {
				background-color: $dark-primary;
			}
		}
	}
	.network-selector-item,
	.network-selector-tabs-container {
		border-bottom-color: darken($labels-dark, 30);
	}
	.network-selector-item-title {
		color: #fff;
	}
	.network-selector-item-type {
		color: $labels-dark;
	}
	.radio .radio-icon {
		border-color: $labels-dark
	}
	.network-selector-item-url:hover .network-selector-item-type {
		color: #fff;
	}

	//coin dropdown
	.token-balance-dropdown.dropdown-menu {
		border-color: $dark-light !important;
		box-shadow: 0 0 30px 0 rgba(23, 24, 41, 0.5) !important;
	}
	.token-balance-dropdown .dropdown-search-icon path {
		fill: $labels-dark;
	}
	.token-balance-dropdown .dropdown-search-field {
		background-color: $dark-light;
		border-color: $dark-light;
		color: #fff;
		&::placeholder {
			color: $labels-dark;
		}
	}
	.token-balance-dropdown[aria-labelledby="dropdown-tokens"] .dropdown-items .dropdown-item:hover {
		color: #fff !important;
	}
	.dropdown-header {
		color: $labels-dark;
	}
	.border-bottom {
		border-bottom-color: darken($labels-dark, 30) !important;
	}

	// coin balance history chart
	.chartjs-render-monitor[data-chart="coinBalanceHistoryChart"] {
		filter: brightness(0) invert(1) !important;
	}

	// logs search
	.logs-search-input, .logs-search-btn, .logs-search-btn-cancel {
		background-color: $dark-light;
		border-color: $dark-light;
		color: #fff;
	}

	.logs-search-btn {
		color: $labels-dark;
	}

	.logs-search-btn {
		&:hover {
			background-color: $dark-primary;
			color: #fff;
		}
	}

	.logs-search-input {
		&::placeholder {
			color: $labels-dark;
		}
	}

	// code
	pre {
		color: #fff;
	}

	// info allert
	.alert-info {
		color: $labels-dark;
		background-color: $dark-light;
		border-color: $dark-light;
	}

	// dark text
	.text-dark {
		color: #fff !important;
	}

	// Contract Verification
	.new-smart-contract-container {
		background-color: $dark-light-bg;
		background-image: linear-gradient(to bottom right, $dark-light 100%, $dark-light 100%);
		@media (max-width: 991.98px) {
			background-image: none;
		}
	}
	.smart-contract-form-group-inner-wrapper .smart-contract-form-group-tooltip {
		color: $labels-dark;
	}
	.smart-contract-title {
		color: #fff;
	}
	.smart-contract-form-group-inner-wrapper > label {
		color: $labels-dark;
	}
	.smart-contract-form-buttons {
		border-top-color: darken($labels-dark, 30);
		.btn-no-border {
			background-color: $dark-light;
			border-color: $dark-light;
			color: #fff;
			&:hover {
				background-color: $dark-primary;
				color: #fff;
			}
		}
	}
	.add-contract-libraries-wrapper {
		border-top-color: darken($labels-dark, 30);
	}

	.token-tile-view-more:before, .token-tile-view-more:after {
		border-top-color: darken($labels-dark, 30);
		border-bottom-color: darken($labels-dark, 30);
	}
	
	// Form Controlls
	.form-control {
		background-color: $dark-light;
		border-color: $dark-light;
		color: #fff;
		&::placeholder {
			color: $labels-dark;
		}
		&:focus {
			background-color: $dark-light;
			border-color: $dark-primary;
			color: #fff;
		}
	}
	.radio-big .radio-icon {
		border-color: $labels-dark;
	}
	.radio-big input[type="radio"]:checked + .radio-icon {
		border-color: $dark-primary;
	}
	.radio-big input[type="radio"]:checked + .radio-icon::before {
		background: $dark-primary;
	}
	.radio-big .radio-text {
		color: #fff;
	}

	// Content loading placeholders
	.tile-loader, .table-content-loader {
		background-color: $dark-bg !important;
		&:before {
			background: linear-gradient(to right, $dark-bg 2%, lighten($dark-bg, 3) 18%, $dark-bg 33%);
		}
	}

	// Verify other explorers
	.verify-other-explorers-elem {
		border-color: darken($labels-dark, 30);
		.exp-logo {
			border-right-color: darken($labels-dark, 30);
		}
		.exp-content {
			h3 {
				color: #fff;
			}
			div {
				color: $labels-dark;
			}
		}
	}
	.verify-other-explorers-more {
		border-color: $dark-primary;
		svg path {
			fill: $dark-primary;
		}
		&:hover {
			background-color: $dark-primary;
			svg path {
				fill: #fff;
			}
		}
	}
	.verify-other-explorers-elem {
		&:hover {
			text-decoration: none;
			color: #fff;
			.exp-content {
				h3, div {
					color: #fff;
				}
			}
		}
	}
	.verify-other-explorers-cell {
		.exp-logo {
			color: #333 !important;
		}
	}

	// API docs dropdown content
	.api-doc-parameters-list-item-description,
	.api-doc-parameters-list-item-title,
	.api-doc-parameters-list-title,
	.api-doc-list-item-controls-view-more {
		color: #fff;
	}

	.api-doc-parameters-list {
		border-bottom-color: darken($labels-dark, 30);
	}
	.api-doc-parameters-container {
		border-top-color: darken($labels-dark, 30);
	}
	.api-doc-tab {
		color: $dark-primary !important;
		&.active {
			border-bottom-color: $dark-primary;
		}
	}

	// Common Buttons
	.btn-secondary, .button-secondary {
		background-color: transparent;
		border-color: $dark-primary;
		color: $dark-primary;
		&:hover {
			background-color: $dark-primary;
			border-color: $dark-primary;
			color: #fff;
		}
	}

	.awesomplete {
		& > ul {
			background: $dark-light-bg;
			&:before {
				background: $dark-light-bg;
			}
			li {
				&:hover {
					background-color: $dark-primary;
					color: #fff;
					mark {
						background: darken($dark-primary, 10);
						color: #fff;
					}
				}
			}
		}
		mark {
			background: $dark-primary;
			color: #fff;
		}
	}

	// Decoded data
	.table.thead-light.table-bordered {
		color: #fff !important;
	}
	.table-bordered, .table-bordered td, .table-bordered th {
		border-color: darken($labels-dark, 30);
	}
	.dark-theme-applied .table td, .dark-theme-applied .table th, .dark-theme-applied hr {
		border-top-color: darken($labels-dark, 30);
	}
	.btn-copy-ico svg path {
		fill: #fff;
	}

	// pre
	.pre-scrollable.line-numbers, .hljs {
		background: $dark-light;
		color: #fff;
	}

	.hljs-comment {
		color: $labels-dark;
	}

	.hljs-title, .hljs-section {
		color: #ff2294;
	}

	.hljs-type, .hljs-string, .hljs-number, .hljs-selector-id, .hljs-selector-class, .hljs-quote, .hljs-template-tag, .hljs-deletion {
		color: #ff2294;
	}

	.hljs-literal, .hljs-built_in, .hljs-bullet, .hljs-code, .hljs-addition {
		color: #20dd94;
	}

	.line-numbers [data-line-number]:before {
		color: #3f436b !important;
		border-right-color: #3f436b !important;
	}

	// 'text dark' label
	.text-dark {
		color: #fff;
	}

	// validator info
	#validatorModal {
		.modal-title {
			color: #fff;
		}

		.text-muted {
			color: $labels-dark;
		}

		.modal-footer {
			border-top-color: darken($labels-dark, 30);
		}

		.modal-content {
			background-color: $dark-light-bg;

			.btn-primary {
				background-color: $dark-primary;
				border-color: $dark-primary;
				&:hover {
					background-color: $dark-primary;
					border-color: $dark-primary;
				}
			}
		}
	}
    
	// alert link
	.alert-link {
		color: $dark-secondary;
	}

	// alert danger
	.alert-danger {
		background-color: $dark-light;
		border-color: $dark-light;
	}
}