@import url('https://fonts.googleapis.com/css2?family=Raleway:wght@200;400&family=Work+Sans&display=swap');

* {
	box-sizing: border-box;
}

:root {
	/* Global variables */
	--theme-blue: #0059b3;
	--theme-light-blue: #0073e6;
	--theme-white: #f7f7f7;
	--theme-grey: #aaaaaa;
	--theme-light-grey: #ececec;
	--default-transition-duration: 0.5s;
	--primary-font-family: "Work Sans", sans-serif;
	--secondary-font-family: Raleway, sans-serif;
}

body {
	font-family: var(--primary-font-family);
	margin: 0;
	padding: 0;
}

.nobr {
	white-space: nowrap;
}

/* Header/nav links and blue buttons */
.link {
	color: white;
	text-decoration: none;
	font-size: 0.75rem;
	text-transform: uppercase;
	font-family: var(--secondary-font-family);
	font-weight: 200;
	letter-spacing: 0.1rem;
}

/* Blue buttons */
.button-link {
	background-color: var(--theme-blue);
	padding: 0.6rem 1rem;
	border-radius: 1rem;
	transition: background-color var(--default-transition-duration);
}

.button-link:hover {
	background-color: var(--theme-light-blue);
}

.lower-alpha-ol {
	list-style-type: lower-alpha;
}

.lower-roman-ol {
	list-style-type: lower-roman;
}

.container {
	width: 80%;
	height: 100%;
	/* auto margin horizontally centers container */
	margin: auto;
	padding: 2rem 0;
}

/* clockwise by default; for anti, set {animation-direction: reverse;} */
@keyframes rotate {
	100% {
		transform: rotate(360deg);
	}
}


.banner {
	/* flexbox, center justified, to vertically center the landing article */
	display: flex;
	flex-direction: column;
	justify-content: center;
	height: 75vh;
	background-color: black;
	background-size: cover;
	background-position: center;
	color: white;
}

.banner #main-header + * {
	margin: 0 0 0 10%;
	width: 80%;
	max-width: 32rem;
	min-width: 16rem;
	text-shadow: 0 0 4px black;
}


/* #main-header, nav are flexboxes that stretch children vertically; the
   nav links are not as tall as the h1. This is to:
     i)  Give nav links a larger clickable area
     ii) Remove gap between "Services" and its dropdown menu */
#main-header {
	width: 100%;
	position: absolute;
	top: 0;
	display: flex;
	justify-content: space-between;
	align-items: stretch;
}

#main-header nav {
	display: flex;
	align-items: stretch;
}

#main-header .link {
	/* Vertically center labels with icons */
	display: inline-flex;
	align-items: center;
	padding: 1rem;
}

#main-header h1 {
	font-size: 1rem;
	font-weight: 200;
	margin: 0;
}

#main-header .nav-item > *:not(.dropdown-menu) {
	transition: opacity var(--default-transition-duration);
}

/* Translucent label and icon, but not dropdown-menu */
#main-header .nav-item:hover > *:not(.dropdown-menu),
#main-header .show-dropdown > *:not(.dropdown-menu) {
	opacity: 0.5;
}

#main-header .hide-when-small {
	display: none;
}

#main-header nav img {
	max-height: 1rem;
	margin-left: 0;
}

#main-header .dropdown-button > *:not(.dropdown-menu) {
	/* The following means children will open dropdown menu */
	pointer-events: none;
}

#main-header .dropdown-menu {
	display: block;
	position: absolute;
	/* Overlap everything */
	z-index: 1;
	background-color: var(--theme-white);
	left: 0;
	top: 100%;
	width: 100%;
	padding: 0;
	margin: 0;
	list-style-type: none;
	box-shadow: 7px 7px 15px rgba(0, 0, 0, 0.5);
	transform: scaleY(0);
	transform-origin: top;
	transition: transform 0.35s;
	/*max-height: 0;
	overflow: hidden;
	transition: max-height 0.4s;*/
}

/*#main-header .dropdown-button:hover .dropdown-menu,*/
#main-header .show-dropdown .dropdown-menu {
	/* .dropdown-menu uses scaleY for the transition because height from
       0 to auto does not animate. Another way is to use max-height, but
       this requires a large max-height to be hard coded, which affects
       transition timing. */
	transform: scaleY(1);
	/*max-height: 23rem;*/
}

#main-header .dropdown-menu h3 {
	margin: 0;
	color: black;
	font-size: 0.75rem;
	font-weight: normal;
	padding: 0.75rem 0.75rem 0.25rem;
}

#main-header .dropdown-menu a {
	display: block;
	color: black;
	font-family: var(--primary-font-family);
	font-size: 0.75rem;
	text-decoration: none;
	text-transform: none;
	letter-spacing: normal;
	padding: 0.75rem;
	transition: background-color var(--default-transition-duration);
}

#main-header .dropdown-menu a:hover {
	background-color: #e2e2e2;
}

#main-header .dropdown-menu hr {
	margin: 0.5rem 0;
	border-top: none;
	border-left: none;
	border-right: none;
	border-bottom: 0.5px solid var(--theme-grey);
}


footer {
	background-color: var(--theme-light-grey);
	text-align: center;
}

#qualifications-grid {
	display: grid;
	grid-template-columns: 1fr 1fr 1fr;
	grid-column-gap: 0.75rem;
	grid-row-gap: 0.25rem;
	justify-items: center;
	align-items: center;
}

#qualifications-grid img {
	width: 20vw;
	max-width: 5rem;
}

#qualifications-grid p {
	margin: 0;
	text-align: center;
	font-family: var(--secondary-font-family);
	font-size: 0.6rem;
	text-transform: uppercase;
	letter-spacing: 0.07rem;
}

footer hr {
	margin: 2rem 0;
	height: 0.5px;
	background-color: var(--theme-grey);
	border: none;
}

#footer-links h3 {
	margin: 0 0 1rem 0;
	font-size: 1rem;
	font-weight: normal;
}

#footer-links nav a {
	display: block;
	color: black;
	font-family: var(--secondary-font-family);
	font-weight: 200;
	font-size: 0.85rem;
	text-decoration: none;
	letter-spacing: 0.1rem;
	text-transform: uppercase;
	margin: 0.5rem 0;
	transition: opacity var(--default-transition-duration);
}

#footer-links nav a:hover {
	opacity: 0.5;
}


@media(min-width: 900px) {

	/* Main header - navigation labels shown, icons smaller,
	   services dropdown menu width of button, headers removed, privacy
	   is its own button */
	#main-header .hide-when-small {
		display: inherit;
	}

	#main-header nav img {
		max-height: 0.8rem;
		margin-left: 0.4rem;
	}

	#main-header .dropdown-button {
		/* dropdown-menu will position relative to this */
		position: relative;
	}

	#main-header .hide-when-large {
		display: none;
	}
}

@media(min-width: 1200px) and (min-height: 650px) {
	:root {
		font-size: 1.25rem;
	}
}

@media(max-width: 480px) {

	/* Footer - qualification caption text and letter spacing smaller */
	#qualifications-grid p {
		font-size: 0.5rem;
		letter-spacing: 0.05rem;
	}
}