add a bunch of frontend stuff

assets/scss/_variables.scss

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+:root {
+	--dark-background: #2B303A;
+	--light-background: #F5F5F5;
+
+	--dark-text: #FFFFFF;
+	--light-text: #000000;
+
+    --dark-primary: #087E8B;
+    --light-primary: #67AEB5;
+
+    --dark-secondary: #7C7F85;
+    --light-secondary: #A4A6AA;
+
+	--dark-danger: #D64933;
+	--light-danger: #FF5A5F;
+
+    --dark-success: #4DA167;
+    --light-success: #77B68B;
+}

assets/scss/style.scss

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+@use "node_modules/normalize.css/normalize";
+@use "_variables";
+
+body {
+	font-family: sans-serif;
+	background-color: var(--light-background);
+	color: var(--light-text);
+
+	&:dark {
+		background-color: var(--dark-background);
+		color: var(--dark-text);
+	}
+}
+
+.auth {
+	width: 100%;
+	@media (min-width: 640px) {
+		max-width: 520px;
+	}
+	margin: 1rem auto;
+
+	p {
+		display: flex;
+		flex-direction: column;
+	}
+}