✏️ Editing: customizer.scss Writable

$customizer-width: 320px;

// header actions
#customize-header-actions {

.customize-save-button-wrapper {
		margin-top: 8px;

.button-primary {
			min-height: 30px;
			line-height: normal;
		}
	}

.customize-controls-close {
		height: 45px;
		border-top: none;

&:before {
			top: 1px;
		}
	}

.customize-controls-preview-toggle {
		left: 97px;
		width: 49px;

.preview {
			font-size: 0;

&:before {
				height: 100%;
				margin-right: 0;
				position: relative;
				top: 11px;
				left: -2px;
			}
		}
	}
}

.in-sub-panel {
	.wp-full-overlay-sidebar {
		.wp-full-overlay-header {
			padding-left: 15px;
		}
	}
}

#accordion-section-themes {
	h3 {
		border-top: none !important;
		margin-bottom: 0 !important;

button.change-theme {
			min-height: 30px;
			line-height: normal;
			margin-top: -14px !important;
		}
	}
}

// first level controls
#customize-controls {
	-webkit-font-smoothing: antialiased;

.customize-info {
		margin-bottom: 0 !important;

&.panel-meta {
			margin-bottom: 15px;
		}
	}

.customize-section-title {
		&.is-in-view {
			box-shadow: 0 3px 8px 0 rgba(0, 0, 0, 0.03);
		}
	}

// group title
	.ct-group-title {
		height: auto !important;
		display: block !important;
		visibility: visible !important;
		margin: 18px 0 0 0 !important;
		padding: 30px 26px 15px 26px !important;
		border-bottom: none;
		border-top: 1px solid #ddd;

h3 {
			font-size: 14px;
			font-weight: 600;
			text-transform: capitalize;
			color: #555d66;
			margin: 0;
		}
	}

#accordion-section-publish_settings {
		+ .ct-group-title {
			margin-top: 0 !important;
			border-top: none;
		}
	}

// section title
	.control-section {

> h3.accordion-section-title {
			display: flex;
			align-items: center;
			font-size: 13px;
			font-weight: 400;
			line-height: 13px;
			border-left: none;
			border-bottom: none;
			background-color: transparent;

&:after {
				font-size: 12px;
				top: calc(50% - 6px);
				inset-inline-end: 23px;
				color: inherit !important;
			}

&:not(:has(.accordion-trigger)) {
				padding: 14px 26px;

&:hover, &:focus {
					color: var(--ui-accent-color);
					background: rgba(255, 255, 255, 0.7);
				}
			}

&:has(.accordion-trigger) {
				padding: 0;

.accordion-trigger {
					padding: 14px 26px;
					transition: inherit;

&:hover, &:focus {
						outline: none;
						box-shadow: none;
						color: var(--ui-accent-color);
						background: rgba(255, 255, 255, 0.7);
					}
				}
			}
		}
	}

// child section
	.control-section-child {

> h3.accordion-section-title {

&:not(:has(.accordion-trigger)),
			&:has(.accordion-trigger) .accordion-trigger {

&:before {
					display: inline-flex;
					content: '';
					width: 5px;
					height: 4px;
					border-inline-start: 1px solid currentColor;
					border-bottom: 1px solid currentColor;
					margin-inline-end: 7px;
				}
			}
		}
	}

// divider for child section
	.ct-group-divider {
		height: auto !important;
		display: block !important;
		visibility: visible !important;
		border-bottom: none;
		padding: 10px 26px !important;

h3 {
			width: 100%;
			height: 1px;
			margin: 0;
			opacity: 0.7;
			background: #ddd;
		}
	}

// second level panel
	.customize-pane-child {
		bottom: 0; // fix panel height
		min-height: 100%;

.panel-meta + .accordion-section.control-section {
			margin-top: 15px;
			border-top: none !important;
		}
	}
}

#customize-theme-controls {
	.customize-pane-parent {
		padding-bottom: 20px;
	}
}

.customize-control-ct-options {
	margin-bottom: 30px;
}

// footer actions
#customize-footer-actions {
	width: #{$customizer-width - 1px};

.devices {
		box-shadow: none;

button {
			
			&:before {
				margin: 0 0 -5px;
			}

.devices__preview-label {
				display: none;
			}
		}
	}
}

.wp-full-overlay-sidebar {
	width: $customizer-width;
	box-shadow: none !important;
	border-inline-end-color: #ddd;
}

// new customizer width
.wp-full-overlay.expanded {
	@media screen and (max-width: 1666px) {
		margin-left: $customizer-width;
	}

@media screen and (min-width: 1667px) {
		margin-left: $customizer-width;
	}
}

.wp-full-overlay.collapsed .wp-full-overlay-sidebar {
	margin-left: -#{$customizer-width};
}

.control-panel-themes .customize-themes-full-container {
	margin-left: $customizer-width;
}

.customize-control-hidden {
	display: none !important;
}

// adding widgets fix
#available-menu-items, 
#available-widgets {
	transition: left 0.2s ease,
				visibility 0.2s ease !important;
}

// other colors
.wp-core-ui {

.customize-controls-close,
	#customize-controls .customize-info .customize-help-toggle {

&:hover, &:focus {
			color: var(--ui-accent-color);
		}
	}
}

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