* {
	margin: 0;
	padding: 0;
	border: 0;
	box-sizing: border-box;
}

img,
video,
svg {
	display: block;
	width: 100%;
	height: auto;
}

:root {
	--grey-1: #333131;
	--grey-2: #666160;
	--grey-3: #999694;
	--grey-4: #cccaca;
	--grey-5: #e7e5e5;
	--grey-6: #f5f6f6;
	--site-background-color: hsl(45, 25%, 97%);
	--site-light-background-color: hsl(45, 25%, 99%);
	--site-dark-background-color: hsl(45, 25%, 91%);
	--site-color: #2b2b2b;
	--site-color2: #393941;
	--site-color3: #656569;
	--form-border-color: #dfdfe7;
	--form-disabled-background-color: #d8cfca;
	--form-disabled-color: #b09f9f;
	--input-background-color: #fff;
	--error-color: #fff;
	--error-background-color: #a70606;
	--active-color: #fff;
	--active-background-color: hsl(17, 79%, 53%);
	--lighter-active-background-color: hsl(17, 79%, 57%);
	--stronger-active-background-color: hsl(17, 90%, 53%);
	--confirmation-color: #fff;
	--confirmation-background-color: #06b83b;
	--tab-headmaster-background-color: hsl(200, 100%, 90%);
	--tab-headmaster-hover-background-color: hsl(200, 100%, 80%);
	--tab-pt12-background-color: hsl(40, 100%, 90%);
	--tab-pt12-hover-background-color: hsl(40, 100%, 80%);
	--form-about-header-background-colour: hsl(0, 0%, 100%);
	--form-about-background-colour: hsl(0, 5%, 98%);
	--white-background: hsl(0, 1%, 100%);
	--system-message-info-background-color: hsl(0, 0%, 90%);
	--system-message-ok-background-color: hsl(127, 50%, 73%);
	--system-message-warning-background-color: hsl(59, 89%, 56%);
	--system-message-error-background-color: hsl(0, 50%, 73%);
	--toggle-button-golden: hsl(60, 77%, 58%);
	--toggle-button-golden-hover: hsl(60, 90%, 58%);
	--blue-1: hsl(201, 79%, 53%);
	--green-1: hsl(141, 79%, 53%);
	--table-vertical-border-color: hsl(0, 0%, 89%);
	--table-header-background-colour: hsl(45, 25%, 92%);
	--table-odd-row-background-colour: #fff;
	--table-even-row-background-colour: hsl(45, 25%, 97%);
}

@media (prefers-color-scheme: dark) {
	:root {
		--grey-1: #cccbcb;
		--grey-2: #999897;
		--grey-3: #666564;
		--grey-4: #333231;
		--grey-5: #171513;
		--grey-6: #050606;
		--site-background-color: hsl(210, 11%, 14%);
		--site-light-background-color: hsl(0, 1%, 20%);
		--site-dark-background-color: hsl(0, 5%, 5%);
		--site-color: #fefefe;
		--site-color2: #d5d5d7;
		--site-color3: #98989f;
		--form-border-color: hsl(360, 0%, 27%);
		--form-disabled-background-color: #544;
		--form-disabled-color: #a99;
		--input-background-color: #333;
		--tab-headmaster-background-color: hsl(200, 100%, 30%);
		--tab-headmaster-hover-background-color: hsl(200, 100%, 40%);
		--tab-pt12-background-color: hsl(40, 100%, 30%);
		--tab-pt12-hover-background-color: hsl(40, 100%, 40%);
		--form-about-header-background-colour: hsl(0, 0%, 15%);
		--form-about-background-colour: hsl(0, 0%, 20%);
		--white-background: hsl(360, 5%, 9%);
		--system-message-info-background-color: hsl(360, 4%, 16%);
		--system-message-ok-background-color: hsl(127, 80%, 15%);
		--system-message-warning-background-color: hsl(59, 80%, 15%);
		--system-message-error-background-color: hsl(360, 80%, 15%);
		--toggle-button-golden: hsl(47, 94%, 31%);
		--toggle-button-golden-hover: hsl(47, 100%, 36%);
		--blue-1: hsl(201, 79%, 40%);
		--green-1: hsl(141, 79%, 40%);
		--table-vertical-border-color: hsl(30, 4%, 41%);
		--table-header-background-colour: hsl(210, 11%, 18%);
		--table-odd-row-background-colour: hsl(360, 5%, 9%);
		--table-even-row-background-colour: hsl(210, 11%, 14%);
	}
}

body {
	background-color: var(--site-background-color);
	color: var(--site-color);
	font-family: sans-serif;
	font-size: 14px;
	display: grid;
	grid-template-rows: repeat(2, auto) 1fr repeat(2, auto);
}

html, body {
	height: 100vh;
}

header, main, footer {
	width: 100%;
	max-width: 1200px;
	margin: 0 auto;
	padding: 1em;
}

a,
a:link,
a:active,
a:visited {
	text-decoration: none;
	color: var(--active-background-color);
}
a:hover {
	color: var(--stronger-active-background-color);
}

.filet {
	width: 100%;
	max-width: 1200px;
	margin: 0 auto;
	height: 1px;
	padding: 0 1em;	
}

.filet hr {
	width: 100%;
	height: 1px;
	background-color: var(--form-border-color);
}

@media (max-width: 550px) {
	header, main, footer {
		padding: .5em;
	}
	
	.filet {
		padding: 0 .5em;
	}
}

h1 {
	font-size: x-large;
	padding-bottom: 1em;
}

h2 {
	font-size: large;
	padding-bottom: 1em;
}

fieldset {
	margin-top: 3ex;
	padding-top: 1.7ex;
}

fieldset legend {
	text-transform: uppercase;
}

/*
 * Header
 */

header {
	display: flex;
	justify-content: space-between;
	align-items: flex-end;
}

#logo {
	width: 115px;
}

#logo-mobile {
	width: 80px;
	display: none;
}

@media (max-width: 600px) {
	
	#logo {
		display: none;
	}
	
	#logo-mobile {
		display: block;
	}
	
}

/*
 * Footer
 */

footer {
	display: flex;
	justify-content: space-between;
	gap: 2em;
}

footer div {
	font-size: x-small;
	color: var(--site-color3);
}

footer div:last-of-type {
	text-align: right;
}

#sysinfo:hover {
	cursor: pointer;
}

/*
 * Form elements
 */

input[type="text"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
input[type="datetime-local"],
input[type="email"],
input[type="tel"],
input[type="url"],
textarea,
select {
	border: 1px solid var(--form-border-color);
	padding: .5em;
	border-radius: 5px;
	font-size: 1em;
	background-color: var(--input-background-color);
	color: var(--site-color);
}

input[type="radio"],
input[type="checkbox"],
input[type="range"],
progress {
	accent-color: var(--active-background-color);
}

fieldset {
	border-top: 1px solid var(--form-border-color);
	padding-top: 1ex;
}

legend {
	padding: 0 .5em;
	margin-left: 1em;
}

/*
 * Tables
 */

table {
	border-collapse: collapse;
	margin-bottom: 2em;
	border-top: 1px solid var(--form-border-color);
}

thead {
	position: sticky;
	top: 0;
	z-index: 10;
}

/* Tables inside tables... */
table table thead {
	z-index: 9;
}

tr {
	border-bottom: 1px solid var(--form-border-color);
}

tbody tr:nth-of-type(odd) {
	background-color: var(--table-odd-row-background-colour);
}

/* Rule needed for when tables are inside tables. */
tbody tr:nth-of-type(even) {
	background-color: var(--table-even-row-background-colour);
}


th {
	font-weight: normal;
	text-transform: uppercase;
	color: var(--site-color2);
	background-color: var(--table-header-background-colour);
}

th, td {
	padding: .35em .25em;
}

/*
 * About dialog
 */

.dialog.about {
	padding: 0;
	background-color: var(--form-about-background-colour);
}

.about .header,
.about .body,
.about .footer {
	padding: 1em;
}

.about .header {
	background-color: var(--form-about-header-background-colour);
	padding-top: 2ex;
	padding-bottom: 2ex;
	font-size: 1.5em;
	font-weight: 500;
}

.about .body {
	grid-template-rows: repeat(7, auto) 1fr;
	border-bottom: 1px solid var(--form-border-color);
}

.dialog.about .body {
	margin: 0;
}

.about .body .label:first-of-type {
	font-size: large;
	grid-column: 1 / span 2;
}

.about .body .label a,
.about .body .label a:link,
.about .body .label a:visited,
.about .body .label a:active {
	text-decoration: none;
	color: var(--active-background-color);
	font-size: smaller;
}

/*
 * Login form
 */

#login {
	width: 100%;
	max-width: 350px;
	margin: 20vh auto 0 auto;
	border: 1px solid var(--form-border-color);
	border-radius: 10px;
	padding: 1em;
	align-self: center;
}

#login input,
#login #error {
	margin-bottom: .5em;
	font-size: 1em;
	width: 100%;
}

#login #error {
	width: 100%;
	padding: .5em;
	border-radius: 5px;
	height: 0;
}

#login #error.active {
	background-color: var(--error-background-color) !important;
	color: var(--error-color) !important;
	height: auto;
}

#login #its-a-trap {
	display: none;
}

#login #cant-forget-but-dont-remember-what {
	font-size: x-small;
	text-align: right;
	color: var(--grey-2);
	margin-top: 1em;
}

#login #cant-forget-but-dont-remember-what:hover {
	cursor: pointer;
	color: var(--active-background-color);
}

/*
 * Dashboard
 */

#user_data {
	display: flex;
	justify-content: flex-end;
	gap: 1em;
}

@media (max-width: 550px) {
	#user_data {
		gap: .5em;
	}
}

#user_data > div {
	display: flex;
	flex-direction: column;
	justify-content: space-between;
}

#user_data svg {
	width: 21px;
	height: 21px;
}

#user_name {
	font-size: larger;
	text-align: right;
}

#user_roles {
	font-size: x-small;
	color: var(--site-color2);
	text-align: right;
	padding-top: .25em;
}

#user_links {
	display: flex;
	justify-content: flex-end;
	gap: .5em;
	white-space: nowrap;
}

#user_links a,
#user_links a:link,
#user_links a:active,
#user_links a:visited {
	display: block;
	padding: .5em 1.5em;
	border: 1px solid var(--form-border-color);
	border-radius: 4px;
	font-size: xx-small;
	color: var(--site-color2);
	background-color: var(--site-light-background-color);
}

#user_links a:hover {
	cursor: pointer;
	color: var(--site-color);
	background-color: var(--site-dark-background-color);
}

#user_picture {
	width: 80px;
	height: 80px;
	border-radius: 50%;
	overflow: hidden;
	border: 2px solid var(--input-background-color);
}

#user_picture > svg {
	width: 100%;
	height: auto;
}

.tabbar {
	display: flex;
	flex-wrap: wrap;
	justify-content: flex-start;
	gap: .5em;
}

.tab {
	border: 1px solid var(--form-border-color);
	border-radius: 4px;
	display: flex;
	flex-direction: column;
	gap: .25em;
	align-items: center;
	padding: .5em;
	min-width: 5em;
	color: var(--site-color2);
	background-color: var(--white-background);
}

.tabbar .headmaster {
	background-color: var(--tab-headmaster-background-color);
}

.tabbar .pt-teacher {
	background-color: var(--tab-pt12-background-color);
}

.tab:hover,
.tabbar .headmaster:hover,
.tabber .pt-teacher:hover {
	cursor: pointer;
	color: var(--site-color);
}

.tab:hover {
	background-color: var(--site-dark-background-color);
}

.tabbar .headmaster:hover {
	background-color: var(--tab-headmaster-hover-background-color);
}

.tabbar .pt-teacher:hover {
	background-color: var(--tab-pt12-hover-background-color);
}

.tab:not(:hover).golden {
	background-color: var(--toggle-button-golden);
}

.tab:hover.golden {
	background-color: var(--toggle-button-golden-hover);
}

.tab svg {
	width: 16px;
	height: 16px;
}

.tab p {
	font-size: smaller;
	text-align: center;
	white-space: nowrap;
}

#fullscreen-icon,
#megascreen-icon {
	width: 30px;
	height: 30px;
	padding: 5px;
	border-radius: 3px;
	display: block;
}

#fullscreen-icon:hover,
#megascreen-icon:hover {
	cursor: pointer;
	color: var(--active-color);
	background-color: var(--active-background-color);
}

#dash_main {
	margin-top: 1em;
}

#date {
	display: flex;
	justify-content: flex-start;
	gap: .5em;
	align-items: center;
}

#date_input {
	font-size: 1em;
	border: 1px solid var(--form-border-color);
	background-color: var(--input-background-color);
	color: var(--site-color);
	border-radius: 3px;
}

.school_years,
.school_months,
.school_days,
.school_classes {
	display: flex;
	justify-content: flex-start;
	gap: .5em;
}

.school_months,
.school_days,
.school_classes {
	margin-top: .5em;
}

.school_years > div:first-of-type,
.school_months > div:first-of-type,
.school_days > div:first-of-type,
.school_classes > div:first-of-type {
	white-space: nowrap;
	padding-top: .15em;
	padding-bottom: .15em;
	color: var(--site-color2);
}

.school_years > div:last-of-type,
.school_months > div:last-of-type,
.school_days > div:last-of-type,
.school_classes > div:last-of-type {
	display: flex;
	justify-content: flex-start;
	flex-wrap: wrap;
	gap: .25em;
}

.school_year.unassigned {
	color: var(--site-color3);
}

.school_year,
.school_month,
.school_day,
.school_class {
	padding: .15em .25em;
	border-radius: 3px;
}

.school_year:hover,
.school_month:hover,
.school_day:hover,
.school_class:hover {
	cursor: pointer;
	background-color: var(--site-dark-background-color);
	color: var(--site-color);
}

.school_class.unassigned {
	color: var(--site-color3);
}

.school_day {
	display: flex;
	flex-direction: column;
	align-items: center;
}

.school_day > div:last-of-type {
	color: var(--site-color3);
	font-size: xx-small;
}

.school_year.now,
.school_month.now,
.school_day.now {
	border: 1px solid var(--active-background-color);
}

/*
 * Profile styles
 */

.profile .body {
	grid-template-rows: repeat(7, auto) 1fr;
}

.dialog.profile {
	width: auto;
	height: auto;
}

#picture-control {
	display: grid;
	row-gap: 1ex;
}

/*
 * Dialog window styles (see also Modal Dialog styles in gui.css)
 */

.dialog {
	position: fixed;
	width: 95%;
	max-width: 600px;
	height: 60vh;
	border: 1px solid var(--form-border-color);
	border-radius: 5px;
	background-color: var(--site-background-color);
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	z-index: 1000;
	padding: 1em;
	display: flex;
	flex-direction: column;
}

.dialog .header {
	order: 1;
}

.dialog .header div {
	width: 100%;
}

.dialog .body {
	margin: 1em 0;
	display: grid;
	grid-template-columns: max-content auto;
	grid-column-gap: .5em;
	grid-row-gap: 1em;
	align-items: flex-start;
	overflow: auto;
	flex-grow: 1;
	order: 2;
}

.dialog .footer {
	order: 3;
	display: flex;
	flex-direction: row-reverse;
	gap: 1em;
}

.dialog h1 {
	padding-bottom: 0;
}

.dialog .body input[type="text"],
.dialog .body input[type="password"] {
	padding: .25em;
}

.dialog .body input[type="checkbox"] {
	justify-self: left;
}

.dialog img {
	width: 80px;
	height: 80px;
}

.dialog p {
	font-size: smaller;
	color: var(--site-color-3);
}

/*
 * System Message styles
 */

.system-message {
	position: fixed;
	top: -120%;
	right: 1em;
	border-radius: 5px;
	border: 1px solid var(--form-border-color);
	z-index: 2000;
	transition: top .75s;
	display: grid;
	grid-template-columns: 1fr auto;
}

.system-message .header {
	font-size: .7em;
	text-transform: uppercase;
	padding: .5ex 2em;
	grid-column: 1;
	grid-row: 1;
}

.system-message .close-button {
	grid-column: 2;
	grid-row: 1;
	width: 16px;
	height: 16px;
	margin: 2px;
}

.system-message .close-button:hover {
	cursor: pointer;
	color: var(--active-color);
}

.system-message .body {
	padding: 3ex 2em;
	grid-column: 1 / span 2;
	grid-row: 2;
}

.system-message .bar {
	border-bottom: 2px solid hsl(0, 0%, 41%);
	width: 0%;
	grid-column: 1 / span 2;
	grid-row: 3;
}

.system-message.info {
	background-color: var(--system-message-info-background-color);
}

.system-message.ok {
	background-color: var(--system-message-ok-background-color);
}

.system-message.warning {
	background-color: var(--system-message-warning-background-color);
}

.system-message.error {
	background-color: var(--system-message-error-background-color);
}

/*
 * Miscellaneous styles
 */

#sitemask {
	position: fixed;
	width: 100%;
	height: 100vh;
	top: 0;
	left: 0;
	background-color: var(--site-background-color);
	opacity: .9;
	z-index: 999;
}

#hourglass {
	position: fixed;
	width: 100%;
	height: 100vh;
	top: 0;
	left: 0;
	background-color: rgba(0, 0, 0, 0);
	z-index: 20000;
	display: flex;
	justify-content: center;
	align-items: center;
}

#hourglass > img {
	width: 100px;
	height: 100px;
	background-color: var(--active-color);
	border: 1px solid var(--form-border-color);
	border-radius: 5px;
}

.active {
	color: var(--active-color) !important;
	background-color: var(--active-background-color) !important;
}

.active:hover {
	background-color:var(--stronger-active-background-color) !important;
}

.red {
	color: var(--error-background-color);
}

.smaller {
	font-size: smaller;
}

.small {
	font-size: x-small;
	color: var(--site-color3);
}

.label {
	color: var(--site-color2);
}

.flex-justify-start {
	display: flex;
	justify-content: flex-start;
	gap: 1em;
	align-items: center;
}

.flex-justify-start-top {
	display: flex;
	justify-content: flex-start;
	gap: 1em;
	align-items: flex-start;
	flex-wrap: wrap;
}

.flex-space-between {
	display: flex;
	justify-content: space-between;
	flex-wrap: wrap;
}

.input-error {
	color: var(--error-color) !important;
	background-color: var(--error-background-color) !important;
}

.invisible,
.hidden {
	display: none !important;
}

.no-margin-top {
	margin-top: 0 !important;
}

.no-space-wrap {
	white-space: nowrap;
}

.auto-width {
	width: auto;
}

.right {
	text-align: right;
}

.center {
	text-align: center;
}

.pre {
	white-space: pre;
}

.bold {
	font-weight: bold;
}

/*
 * Users search.
 */

#users-search-results-table img,
#users-search-results-table svg {
	width: 60px;
	height: auto;
	padding: 1px 0;
}

#users-search-results-table tbody tr:hover {
	cursor: pointer;
	background-color: var(--form-border-color);
}

/*
 * Hover buttons.
 */

.hover-button {
	border: 1px solid var(--form-border-color);
	border-radius: 4px;
	height: 26px;
	min-width: 26px;
	width: max-content;
	white-space: nowrap;
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--grey-1);
	background-color: var(--site-light-background-color);
	}

.hover-button:hover {
	cursor: pointer;
	color: var(--active-color) !important;
	background-color: var(--active-background-color);
}

.hover-button svg {
	width: 24px;
	height: 24px;
	padding: 4px;
	color: var(--grey-1);
	border-radius: 3px;
}

.hover-button:hover svg {
	color: var(--active-color);
	background-color: var(--active-background-color);
}

.hover-button > div {
	padding-right: 4px;
}

/*
 * file list
 */

.file-list {
	margin-top: 1ex;
	margin-bottom: 1ex;
}

.file-list td:nth-of-type(3) {
	text-align: right;
}

.file-list img {
	width: 40px;
	height: auto;
	margin: 0 auto;
}