@import url('https://fonts.googleapis.com/css?family=Titillium+Web:400,500,700&display=swap');

:root {

	/* colors */
	--color-white: #ffffff;
	--color-black: #000000;

	--color-dark: #161b22;
	--color-darker: #0d1117;

	--color-medium-dark: #373c42;
	--color-medium: #6e7680;
	--color-medium-light: #b1b1b1;

	--color-light: #d1d1d1;
	--color-lighter: #e2e2e2;

	--color-accent-blue: #1f6feb;
	--color-accent-orange: #f9826c;

	/* default button colors (dark gray) */
	--color-button-background: var(--color-medium-dark);
	--color-button-text: var(--color-light);
	--color-button-border: var(--color-lighter);
	
	/* default (dark) theme */
	--color-text-primary: var(--color-light);
	--color-body-background: var(--color-dark);

	--color-textarea-background: var(--color-darker);
	--color-textarea-border: var(--color-medium);
	--color-textarea-text: var(--color-light);

	/* link colors */
	--color-link: var(--color-accent-blue);

}


body.light {

	--color-text-primary: var(--color-dark);
	--color-body-background: var(--color-light);

	--color-textarea-background: var(--color-lighter);
	--color-textarea-border: var(--color-dark);
	--color-textarea-text: var(--color-dark);

	/* link colors */
	--color-link: var(--color-accent-blue);

	/* button colors */
	--color-button-background: var(--color-lighter);
	--color-button-text: var(--color-dark);
	--color-button-border: var(--color-dark);
}


*,
*:after,
*:before {
	box-sizing: border-box;
}


html {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
	scroll-behavior: smooth;
}

body {
	font-family: 'Titillium Web', 'Segoe UI';
	font-size: 1.25rem;
	line-height: 1.5;
	margin: 0;
	padding: 0;
	color: var(--color-text-primary);
	background-color: var(--color-body-background);
    display: flex;
    flex-direction: row;
    min-height: 100vh;
	transition: background-color 0.3s ease, color 0.5s ease 0.2s;
}

aside {
	min-width: 280px;
	max-width: 16%;
	height: 100vh;
	padding: 10px;
}

main {
	flex: 1;
	padding: 10px;
	display: flex;
	flex-direction: column;
}

a {
	color: var(--color-link);
	text-decoration: none;
	transition: color 0.3s ease;
	font-weight: bold;
}

a:hover {
	text-decoration: underline;
}

textarea {
	width: calc(100% - 20px);
	background-color: var(--color-textarea-background);
	color: var(--color-textarea-text);
	border: 1px solid var(--color-textarea-border);
	padding: 8px;
	border-radius: 4px;
}

input[type="text"] {
	background-color: var(--color-textarea-background);
	color: var(--color-textarea-text);
	border: 1px solid var(--color-textarea-border);
	padding: 4px 8px;
	border-radius: 4px;
}

select {
	background-color: var(--color-textarea-background);
	color: var(--color-textarea-text);
	border: 1px solid var(--color-textarea-border);
	padding: 4px 8px;
	border-radius: 4px;
}

button {
	cursor: pointer;
	background-color: var(--color-button-background);
	color: var(--color-button-text);
	border: 1px solid var(--color-button-border);
	padding: 4px 6px;
	border-radius: 4px;
	margin: 0 4px;
	transition: background-color 0.3s ease, color 0.3s ease
}

button:disabled {
	cursor: not-allowed;
	opacity: 0.5;
	background-color: var(--color-medium);
	color: var(--color-medium-light);
	border-color: var(--color-medium);
}

.video-container {
	width: 100%;
	aspect-ratio: 16 / 9;
}

summary {
	cursor: pointer;
	font-size: 1.3rem;
	color: var(--color-accent-orange);
}

summary.video {
	color: var(--color-accent-blue);
}