/*
 * Polar Tint — Base styles
 *
 * Resets, root typography, accessibility defaults, and layout primitives
 * (container, skip link, screen-reader utility, focus styles).
 *
 * Component styles live in components.css (added next iteration).
 */

/* === Modern reset =========================================== */

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

* {
	margin: 0;
}

html {
	-webkit-text-size-adjust: 100%;
	-moz-text-size-adjust: 100%;
	text-size-adjust: 100%;
	scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
	html {
		scroll-behavior: auto;
	}
}

html, body {
	height: 100%;
}

body {
	font-family: var(--font-family-body);
	font-size: var(--text-base);
	line-height: var(--leading-normal);
	color: var(--color-body);
	background-color: var(--color-white);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	text-rendering: optimizeLegibility;
}

img, picture, video, canvas, svg {
	display: block;
	max-width: 100%;
	height: auto;
}

input, button, textarea, select {
	font: inherit;
	color: inherit;
}

button {
	background: none;
	border: none;
	padding: 0;
	cursor: pointer;
}

a {
	color: var(--color-polar-blue);
	text-decoration: none;
	transition: color var(--duration-fast) var(--easing-out);
}

a:hover {
	color: var(--color-primary-navy);
	text-decoration: underline;
}

ul, ol {
	list-style: none;
	padding: 0;
}

/* === Heading defaults ======================================= */

h1, h2, h3, h4, h5, h6 {
	font-family: var(--font-family-heading);
	font-weight: var(--weight-extrabold);
	line-height: var(--leading-tight);
	color: var(--color-primary-navy);
	letter-spacing: var(--tracking-tight);
	overflow-wrap: break-word;
	word-wrap: break-word;
}

h1 {
	font-size: clamp(1.875rem, 5vw + 1rem, 4.5rem);
	font-weight: var(--weight-extrabold);
	line-height: 1.1;
}

h2 {
	font-size: clamp(1.5rem, 2.5vw + 0.75rem, 2.5rem);
	font-weight: var(--weight-bold);
}

h3 {
	font-size: var(--text-xl);
	font-weight: var(--weight-bold);
}

h4 {
	font-size: var(--text-xl);
	font-weight: var(--weight-bold);
}

h5 {
	font-size: var(--text-lg);
	font-weight: var(--weight-bold);
}

h6 {
	font-size: var(--text-base);
	font-weight: var(--weight-bold);
	text-transform: uppercase;
	letter-spacing: var(--tracking-wide);
}

@media (min-width: 640px) {
	h3 { font-size: var(--text-2xl); }
}
/* h1 + h2 are fluid via clamp() — no breakpoint overrides needed */

p {
	margin-bottom: var(--space-4);
}

p:last-child {
	margin-bottom: 0;
}

strong, b {
	font-weight: var(--weight-bold);
	color: inherit;
}

/* === Focus styles (a11y) =================================== */

:focus {
	outline: none;
}

:focus-visible {
	outline: 3px solid var(--color-polar-blue);
	outline-offset: 3px;
	border-radius: var(--radius-sm);
}

/* === Skip link (a11y) ====================================== */

.skip-link {
	position: absolute;
	top: -100px;
	left: var(--space-4);
	z-index: var(--z-modal);
	padding: var(--space-3) var(--space-4);
	background-color: var(--color-primary-navy);
	color: var(--color-white);
	font-weight: var(--weight-bold);
	border-radius: var(--radius-md);
	text-decoration: none;
	transition: top var(--duration-fast) var(--easing-out);
}

.skip-link:focus {
	top: var(--space-4);
	color: var(--color-white);
}

/* === Screen-reader-only utility ============================ */

.sr-only,
.screen-reader-text {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* === Container primitives ================================== */

.container {
	width: 100%;
	max-width: var(--container-max);
	margin: 0 auto;
	padding-left: var(--container-padding);
	padding-right: var(--container-padding);
}

.container--narrow {
	max-width: var(--container-narrow-max);
}

/* === Page main wrapper ===================================== */

.site-main {
	min-height: 60vh;
}

.site-content {
	padding-top: var(--space-16);
	padding-bottom: var(--space-16);
}

/* === Provisional header/footer styles (until components.css ships) === */

/* Floating transparent header over the hero — turns into a white-bg
   blurred bar once the user scrolls past 20px (toggled by JS in main.js). */
.site-header {
	position: sticky;
	top: 0;
	z-index: var(--z-sticky);
	background-color: transparent;
	border-bottom: 1px solid transparent;
	box-shadow: none;
	transition:
		background-color var(--duration-base) var(--easing-out),
		border-color var(--duration-base) var(--easing-out),
		box-shadow var(--duration-base) var(--easing-out);
}

.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space-6);
	min-height: 80px;
}

.site-logo {
	display: inline-flex;
	align-items: center;
	flex-shrink: 0;
	text-decoration: none;
	/* Text-fallback styling (only renders if image fails) */
	color: var(--color-primary-navy);
	font-weight: var(--weight-extrabold);
	font-size: var(--text-xl);
	letter-spacing: var(--tracking-tight);
	white-space: nowrap;
}
.site-logo:hover { text-decoration: none; }

.site-logo__image {
	display: block;
	height: 40px;
	width: auto;
	max-width: 200px;
}
@media (min-width: 640px) {
	.site-logo__image {
		height: 48px;
		max-width: 240px;
	}
}
@media (min-width: 1024px) {
	.site-logo__image {
		height: 52px;
	}
}

.site-header__cta .btn--primary {
	min-height: 40px;
	padding: var(--space-2) var(--space-4);
	font-size: var(--text-sm);
}

@media (min-width: 640px) {
	.site-header__cta .btn--primary {
		min-height: 44px;
		padding: var(--space-3) var(--space-5);
		font-size: var(--text-base);
	}
}

.site-logo:hover {
	color: var(--color-polar-blue);
	text-decoration: none;
}

.primary-nav__list {
	display: none;
	gap: var(--space-6);
	align-items: center;
	list-style: none;
	padding: 0;
	margin: 0;
}

@media (min-width: 1024px) {
	.primary-nav__list {
		display: flex;
	}
}

.primary-nav__list > li > a {
	color: var(--color-white);
	font-weight: var(--weight-medium);
	transition: color var(--duration-base) var(--easing-out);
	display: inline-flex;
	align-items: center;
	gap: var(--space-1);
}

.primary-nav__list > li > a:hover {
	color: var(--color-polar-blue);
	text-decoration: none;
}

.site-header.is-scrolled .primary-nav__list > li > a {
	color: var(--color-body);
}
.site-header.is-scrolled .primary-nav__list > li > a:hover {
	color: var(--color-polar-blue);
}

/* -------- Primary nav dropdowns ------------------------------------- */
/* Rich dropdown panel: icon + label + small description per item.
   Polar-blue accent strip on top, soft polar-tinted shadow, smooth
   fade-slide on hover/focus. Works on both legacy simple markup
   (<li><a>Label</a></li>) and the rich variant. */

.primary-nav__item--has-children {
	position: relative;
}
.primary-nav__item--has-children > a {
	position: relative;
}
.primary-nav__item--has-children > a::after {
	content: "";
	display: inline-block;
	width: 8px;
	height: 8px;
	margin-left: 6px;
	border-right: 2px solid currentColor;
	border-bottom: 2px solid currentColor;
	transform: rotate(45deg) translateY(-2px);
	opacity: 0.85;
	transition: transform var(--duration-base) var(--easing-out);
}
.primary-nav__item--has-children:hover > a::after,
.primary-nav__item--has-children:focus-within > a::after {
	transform: rotate(-135deg) translateY(2px);
}

.primary-nav__dropdown {
	position: absolute;
	top: 100%;
	left: 50%;
	min-width: 320px;
	background: var(--color-white);
	border-radius: var(--radius-lg);
	box-shadow:
		0 24px 56px -16px rgba(22, 73, 146, 0.28),
		0 0 0 1px rgba(22, 73, 146, 0.06);
	padding: var(--space-3);
	list-style: none;
	margin: 0;
	z-index: 200;
	opacity: 0;
	visibility: hidden;
	pointer-events: none;
	transform: translateX(-50%) translateY(12px);
	transition:
		opacity var(--duration-base) var(--easing-out),
		transform var(--duration-base) var(--easing-out),
		visibility var(--duration-base) linear;
}

/* Polar-blue accent strip across the top of the panel */
.primary-nav__dropdown::before {
	content: "";
	position: absolute;
	top: -1px;
	left: 24px;
	right: 24px;
	height: 3px;
	background: linear-gradient(90deg, var(--color-primary-navy), var(--color-polar-blue));
	border-radius: 3px;
	pointer-events: none;
}

/* Invisible bridge so the cursor can move from the nav item into the
   dropdown without crossing a dead zone that would close it. */
.primary-nav__dropdown::after {
	content: "";
	position: absolute;
	top: -16px;
	left: 0;
	right: 0;
	height: 16px;
	pointer-events: auto;
}

.primary-nav__item--has-children:hover > .primary-nav__dropdown,
.primary-nav__item--has-children:focus-within > .primary-nav__dropdown {
	opacity: 1;
	visibility: visible;
	pointer-events: auto;
	transform: translateX(-50%) translateY(8px);
}

.primary-nav__dropdown li {
	margin: 0;
	list-style: none;
}

.primary-nav__dropdown li a {
	display: flex;
	align-items: center;
	gap: var(--space-3);
	padding: var(--space-3) var(--space-3);
	color: var(--color-body);
	font-size: var(--text-base);
	font-weight: var(--weight-bold);
	border-radius: var(--radius-md);
	text-decoration: none;
	transition:
		background var(--duration-fast) var(--easing-out),
		color var(--duration-fast) var(--easing-out),
		transform var(--duration-fast) var(--easing-out);
	position: relative;
}

.primary-nav__dropdown li a:hover,
.primary-nav__dropdown li a:focus-visible {
	background: var(--color-ice);
	color: var(--color-primary-navy);
	text-decoration: none;
}

.primary-nav__dropdown li + li {
	margin-top: 2px;
}

/* Trailing arrow that slides in on hover */
.primary-nav__dropdown li a::after {
	content: "→";
	margin-left: auto;
	color: var(--color-polar-blue);
	font-weight: var(--weight-bold);
	opacity: 0;
	transform: translateX(-6px);
	transition:
		opacity var(--duration-fast) var(--easing-out),
		transform var(--duration-fast) var(--easing-out);
	flex-shrink: 0;
	font-size: var(--text-lg);
	line-height: 1;
}
.primary-nav__dropdown li a:hover::after,
.primary-nav__dropdown li a:focus-visible::after {
	opacity: 1;
	transform: translateX(0);
}

/* Icon column inside the dropdown link */
.primary-nav__dropdown .dropdown-icon {
	flex-shrink: 0;
	width: 40px;
	height: 40px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	background: linear-gradient(135deg, rgba(46, 163, 242, 0.12), rgba(22, 73, 146, 0.08));
	border-radius: var(--radius-md);
	color: var(--color-primary-navy);
	transition:
		background var(--duration-fast) var(--easing-out),
		color var(--duration-fast) var(--easing-out),
		transform var(--duration-fast) var(--easing-out);
}
.primary-nav__dropdown .dropdown-icon svg {
	width: 22px;
	height: 22px;
}
.primary-nav__dropdown li a:hover .dropdown-icon,
.primary-nav__dropdown li a:focus-visible .dropdown-icon {
	background: linear-gradient(135deg, var(--color-polar-blue), var(--color-primary-navy));
	color: var(--color-white);
	transform: scale(1.05);
}

/* Two-line text column (label + description) */
.primary-nav__dropdown .dropdown-text {
	display: flex;
	flex-direction: column;
	gap: 2px;
	min-width: 0;
}
.primary-nav__dropdown .dropdown-label {
	font-size: var(--text-base);
	font-weight: var(--weight-bold);
	color: var(--color-primary-navy);
	line-height: 1.2;
}
.primary-nav__dropdown .dropdown-desc {
	font-size: var(--text-xs);
	font-weight: var(--weight-medium);
	color: var(--color-body-muted, rgb(60 60 60 / 0.7));
	line-height: 1.35;
}

/* Make the eyebrow-style category appear above sub-links inside the
   panel. Only renders when authored. */
.primary-nav__dropdown .dropdown-eyebrow {
	display: block;
	padding: 4px var(--space-3) var(--space-2);
	font-size: var(--text-2xs, 0.6875rem);
	font-weight: var(--weight-bold);
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--color-polar-blue);
}

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--space-2);
	min-height: 44px;
	padding: var(--space-3) var(--space-5);
	font-weight: var(--weight-bold);
	font-size: var(--text-base);
	line-height: 1.2;
	border-radius: var(--radius-md);
	transition: background-color var(--duration-fast) var(--easing-out),
	            color var(--duration-fast) var(--easing-out),
	            box-shadow var(--duration-fast) var(--easing-out),
	            transform var(--duration-fast) var(--easing-out);
	cursor: pointer;
	white-space: nowrap;
}

.btn--primary {
	background-color: var(--color-primary-navy);
	color: var(--color-white);
}

.btn--primary:hover {
	background-color: var(--color-polar-blue);
	color: var(--color-white);
	box-shadow: var(--shadow-md);
	text-decoration: none;
	transform: translateY(-1px);
}

.mobile-toggle {
	display: flex;
	flex-direction: column;
	gap: 5px;
	width: 44px;
	height: 44px;
	padding: var(--space-2);
	align-items: center;
	justify-content: center;
}

@media (min-width: 1024px) {
	.mobile-toggle {
		display: none;
	}
}

.mobile-toggle__bar {
	display: block;
	width: 24px;
	height: 2px;
	background-color: var(--color-white);
	transition:
		background-color var(--duration-base) var(--easing-out),
		transform var(--duration-fast) var(--easing-out),
		opacity var(--duration-fast) var(--easing-out);
}

.site-header.is-scrolled .mobile-toggle__bar {
	background-color: var(--color-primary-navy);
}

/* Footer baseline (will be expanded with components) */
.site-footer {
	background: var(--gradient-hero);
	color: var(--color-white);
	padding: var(--space-16) 0 var(--space-8);
	margin-top: var(--space-24);
}

.site-footer__columns {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--space-8);
	margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
	.site-footer__columns {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (min-width: 1024px) {
	.site-footer__columns {
		grid-template-columns: repeat(4, 1fr);
	}
}

.site-footer__heading {
	color: var(--color-white);
	font-size: var(--text-lg);
	font-weight: var(--weight-bold);
	margin-bottom: var(--space-4);
}

.site-footer__list a {
	display: block;
	padding: var(--space-1) 0;
	color: var(--color-slate-200);
	font-size: var(--text-sm);
}

.site-footer__list a:hover {
	color: var(--color-white);
}

.site-footer__bottom {
	display: flex;
	flex-direction: column;
	gap: var(--space-4);
	align-items: center;
	justify-content: space-between;
	padding-top: var(--space-8);
	border-top: 1px solid rgb(255 255 255 / 0.1);
	font-size: var(--text-sm);
	color: var(--color-slate-200);
}

@media (min-width: 768px) {
	.site-footer__bottom {
		flex-direction: row;
	}
}

.site-footer__social {
	display: flex;
	gap: var(--space-4);
}

.site-footer__social-link {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 40px;
	height: 40px;
	border-radius: var(--radius-pill);
	background-color: rgb(255 255 255 / 0.1);
	color: var(--color-white);
	font-weight: var(--weight-bold);
	font-size: var(--text-sm);
}

.site-footer__social-link:hover {
	background-color: var(--color-polar-blue);
	color: var(--color-white);
	text-decoration: none;
}

.site-footer__legal-list {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space-4);
}

.site-footer__legal-list a {
	color: var(--color-slate-200);
	font-size: var(--text-sm);
}

.site-footer__legal-list a:hover {
	color: var(--color-white);
}