/* ==========================================================================
   Titan Robotics — base + layout
   ========================================================================== */

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	*, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
	margin: 0;
	font-family: var(--font-body);
	font-size: var(--text-base);
	line-height: 1.65;
	color: var(--ink);
	background: var(--white);
	-webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4 {
	font-family: var(--font-display);
	font-weight: 700;
	line-height: 1.12;
	color: var(--navy);
	margin: 0 0 0.6em;
	text-wrap: balance;
}
h1 { font-size: var(--h1); }
h2 { font-size: var(--h2); }
h3 { font-size: var(--h3); }

p { margin: 0 0 1em; }

a { color: var(--navy); text-decoration-color: var(--cyan); text-decoration-thickness: 2px; text-underline-offset: 3px; }
a:hover { color: var(--hero-gradient-4); }

:focus-visible { outline: var(--focus-ring); outline-offset: 2px; border-radius: 2px; }

.screen-reader-text {
	position: absolute !important;
	clip-path: inset(50%);
	width: 1px; height: 1px;
	overflow: hidden;
	white-space: nowrap;
}

.skip-link {
	position: absolute;
	left: 0.5rem; top: -100px;
	z-index: 200;
	background: var(--navy);
	color: var(--white);
	padding: 0.6rem 1rem;
	border-radius: var(--radius-sm);
	transition: top 0.15s ease;
}
.skip-link:focus { top: 0.5rem; color: var(--white); }

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */

.section { padding: var(--section-pad) 1.25rem; }

.section__inner { max-width: var(--container); margin: 0 auto; }
.section__inner--narrow { max-width: var(--container-narrow); }

.section--tint { background: var(--tint); }
.section--grey { background: var(--tint); }

.section--navy { background: var(--navy); color: var(--white); }
.section--navy h2, .section--navy h3 { color: var(--white); }
.section--navy p { color: rgba(255, 255, 255, 0.88); }
.section--navy a { color: var(--white); text-decoration-color: var(--cyan); }

/* Signature: faceted/angled section edges echoing the low-poly logo.
   Applied to full-bleed dark sections only — a signature, not wallpaper. */
.angled-top { clip-path: polygon(0 var(--facet), 62% 0.35rem, 100% var(--facet), 100% 100%, 0 100%); padding-top: calc(var(--section-pad) + var(--facet)); }
.angled-bottom { clip-path: polygon(0 var(--facet), 62% 0.35rem, 100% var(--facet), 100% calc(100% - var(--facet)), 38% calc(100% - 0.35rem), 0 calc(100% - var(--facet))); padding-bottom: calc(var(--section-pad) + var(--facet)); }
.angled-top.angled-bottom { clip-path: polygon(0 var(--facet), 62% 0.35rem, 100% var(--facet), 100% calc(100% - var(--facet)), 38% calc(100% - 0.35rem), 0 calc(100% - var(--facet))); }

.section__eyebrow {
	font-family: var(--font-display);
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.14em;
	font-size: var(--text-sm);
	color: var(--ink-muted);
	margin-bottom: 0.35rem;
}
.section__eyebrow--cyan { color: var(--cyan); }
.section__title--light { color: var(--white); }
.section__lede { max-width: 44rem; color: var(--ink-muted); }

.prose--lede { font-size: var(--text-lg); }

/* --------------------------------------------------------------------------
   Header / navigation
   -------------------------------------------------------------------------- */

.site-header {
	position: sticky;
	top: 0;
	z-index: 100;
	background: var(--navy);
	box-shadow: 0 1px 0 rgba(255, 255, 255, 0.08);
}

/* Transparent over the homepage hero until scroll (nav.js adds .is-solid) */
.site-header--transparent {
	position: fixed;
	inset: 0 0 auto 0;
	background: transparent;
	box-shadow: none;
	transition: background 0.25s ease, box-shadow 0.25s ease;
}
.site-header--transparent.is-solid {
	background: var(--navy);
	box-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
}

.nav-bar__inner {
	max-width: var(--container);
	margin: 0 auto;
	padding: 0.55rem 1.25rem;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
}

.nav-brand {
	display: flex;
	align-items: center;
	gap: 0.65rem;
	text-decoration: none;
	color: var(--white);
}
.nav-brand:hover { color: var(--white); }
.nav-brand__logo { width: 46px; height: 46px; object-fit: contain; flex-shrink: 0; }
.nav-brand__text { display: flex; flex-direction: column; line-height: 1.05; }
.nav-brand__name { font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; letter-spacing: 0.02em; text-transform: uppercase; }
.nav-brand__team { font-size: 0.72rem; color: var(--cool-grey); letter-spacing: 0.12em; text-transform: uppercase; }

.primary-nav__list {
	list-style: none;
	margin: 0; padding: 0;
	display: flex;
	align-items: center;
	gap: 0.25rem;
}
.primary-nav__list a {
	display: block;
	padding: 0.55rem 0.8rem;
	color: var(--white);
	text-decoration: none;
	font-weight: 500;
	font-size: var(--text-sm);
	border-radius: var(--radius-sm);
}
.primary-nav__list a:hover { background: rgba(255, 255, 255, 0.1); color: var(--white); }
.primary-nav__list .current-menu-item > a,
.primary-nav__list .current-menu-ancestor > a { box-shadow: inset 0 -2px 0 var(--cyan); }

/* Dropdowns (desktop) */
.primary-nav .menu-item-has-children { position: relative; }
.primary-nav .menu-item-has-children > a::after {
	content: "";
	display: inline-block;
	margin-left: 0.4rem;
	width: 0.45em; height: 0.45em;
	border-right: 2px solid currentColor;
	border-bottom: 2px solid currentColor;
	transform: rotate(45deg) translateY(-2px);
}
.primary-nav .sub-menu {
	list-style: none;
	margin: 0; padding: 0.4rem;
	position: absolute;
	top: 100%; left: 0;
	min-width: 13rem;
	background: var(--navy);
	border: 1px solid rgba(255, 255, 255, 0.12);
	border-radius: var(--radius-sm);
	box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
	display: none;
	z-index: 50;
}
.primary-nav .menu-item-has-children:hover > .sub-menu,
.primary-nav .menu-item-has-children:focus-within > .sub-menu,
.primary-nav .menu-item-has-children.is-open > .sub-menu { display: block; }

.nav-toggle { display: none; }

/* Mobile / off-canvas below 880px */
@media (max-width: 880px) {
	.nav-toggle {
		display: inline-flex;
		flex-direction: column;
		gap: 5px;
		background: none;
		border: 0;
		padding: 0.6rem;
		cursor: pointer;
	}
	.nav-toggle__bar { width: 24px; height: 2px; background: var(--white); transition: transform 0.2s ease, opacity 0.2s ease; }
	.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
	.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
	.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

	.primary-nav {
		position: fixed;
		top: 0; right: 0; bottom: 0;
		width: min(20rem, 85vw);
		background: var(--navy);
		padding: 5rem 1.25rem 2rem;
		transform: translateX(100%);
		transition: transform 0.25s ease;
		overflow-y: auto;
		box-shadow: -8px 0 30px rgba(0, 0, 0, 0.35);
	}
	.primary-nav.is-open { transform: translateX(0); }

	.primary-nav__list { flex-direction: column; align-items: stretch; }
	.primary-nav__list a { padding: 0.8rem 0.6rem; font-size: 1rem; }

	/* Dropdowns become tap-to-expand accordions */
	.primary-nav .sub-menu {
		position: static;
		display: none;
		box-shadow: none;
		border: 0;
		border-left: 2px solid var(--cyan);
		border-radius: 0;
		margin-left: 0.75rem;
	}
	.primary-nav .menu-item-has-children:hover > .sub-menu { display: none; }
	.primary-nav .menu-item-has-children.is-open > .sub-menu { display: block; }
	.primary-nav .menu-item-has-children:focus-within > .sub-menu { display: none; }
	.primary-nav .menu-item-has-children.is-open:focus-within > .sub-menu { display: block; }
}

/* --------------------------------------------------------------------------
   Homepage hero
   -------------------------------------------------------------------------- */

.home-hero {
	position: relative;
	min-height: 92vh;
	display: grid;
	place-items: center;
	overflow: hidden;
	padding: 6rem 1.25rem 4rem;
	clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--facet)), 38% calc(100% - 0.35rem), 0 calc(100% - var(--facet)));
}
.home-hero__media { position: absolute; inset: 0; }
.home-hero__img { width: 100%; height: 100%; object-fit: cover; opacity: 0.5; }
.home-hero__overlay {
	position: absolute; inset: 0;
	background: linear-gradient(180deg, rgba(18, 39, 73, 0.55) 0%, rgba(18, 39, 73, 0.25) 45%, rgba(18, 39, 73, 0.75) 100%);
}
.home-hero__content {
	position: relative;
	text-align: center;
	max-width: 54rem;
	color: var(--white);
}
.home-hero__logo-img {
	width: clamp(9rem, 22vw, 15rem);
	height: auto;
	margin: 0 auto 1.2rem;
	filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.45));
}
.home-hero__particles { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.titan-placeholder--logo { width: clamp(6rem, 14vw, 8.5rem); height: clamp(6rem, 14vw, 8.5rem); }
.home-hero__title { color: var(--white); margin-bottom: 0.4rem; text-transform: uppercase; letter-spacing: 0.02em; }
.home-hero__title-team { display: block; font-size: 0.42em; font-weight: 600; letter-spacing: 0.28em; color: var(--cyan); margin-top: 0.5rem; }
.home-hero__sub { font-size: var(--text-lg); color: rgba(255, 255, 255, 0.92); max-width: 38rem; margin: 0 auto 1.8rem; }
.home-hero__actions { display: flex; gap: 0.8rem; justify-content: center; flex-wrap: wrap; }

/* (Hero scroll chevron removed in revision 1.) */

/* --------------------------------------------------------------------------
   Sub-page banner (short, navy overlay — the gradient stays homepage-only)
   -------------------------------------------------------------------------- */

.page-banner {
	position: relative;
	min-height: clamp(16rem, 32vh, 22rem);
	display: grid;
	align-items: end;
	background: var(--navy);
	overflow: hidden;
	clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--facet)), 38% calc(100% - 0.35rem), 0 calc(100% - var(--facet)));
	padding-bottom: var(--facet);
}
.page-banner__media { position: absolute; inset: 0; }
.page-banner__img { width: 100%; height: 100%; object-fit: cover; }
.page-banner__media--placeholder {
	display: grid; place-content: center; gap: 0.4rem;
	background: repeating-linear-gradient(45deg, rgba(255,255,255,0.05) 0 12px, transparent 12px 24px);
	color: var(--cool-grey);
	text-align: center;
}
.page-banner__overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(26, 54, 104, 0.45), rgba(18, 39, 73, 0.85)); }
.page-banner__content {
	position: relative;
	max-width: var(--container);
	width: 100%;
	margin: 0 auto;
	padding: 5.5rem 1.25rem 1.6rem;
}
.page-banner__breadcrumb {
	font-family: var(--font-display);
	font-weight: 600;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	font-size: var(--text-xs);
	color: var(--cyan);
	margin: 0 0 0.2rem;
}
.page-banner__title { color: var(--white); margin: 0; font-size: clamp(2.2rem, 1.6rem + 2.4vw, 3.6rem); text-transform: uppercase; }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.site-footer {
	background: var(--navy);
	color: var(--white);
	clip-path: polygon(0 var(--facet), 62% 0.35rem, 100% var(--facet), 100% 100%, 0 100%);
	padding-top: var(--facet);
	margin-top: 0;
}
.site-footer__inner {
	max-width: var(--container);
	margin: 0 auto;
	padding: 3.5rem 1.25rem 2rem;
	display: grid;
	grid-template-columns: 1.4fr 1fr 1.2fr 1.2fr;
	gap: 2rem;
}
.footer-brand { display: flex; align-items: center; gap: 0.8rem; }
.footer-brand__logo { width: 64px; height: auto; flex-shrink: 0; }
.footer-brand__name { font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; text-transform: uppercase; line-height: 1.15; margin: 0; }
.footer-brand__name span { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.14em; color: var(--cool-grey); }
.site-footer__tagline { color: var(--cool-grey); font-size: var(--text-sm); margin-top: 1rem; }

.site-footer__heading {
	font-size: var(--text-sm);
	color: var(--cyan);
	text-transform: uppercase;
	letter-spacing: 0.14em;
	margin-bottom: 0.8rem;
}
.site-footer__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; font-size: var(--text-sm); }
.site-footer__list a { color: rgba(255, 255, 255, 0.88); text-decoration: none; }
.site-footer__list a:hover { color: var(--cyan); }

.site-footer__bottom {
	border-top: 1px solid rgba(255, 255, 255, 0.12);
	background: var(--navy-deep);
}
.site-footer__bottom p {
	max-width: var(--container);
	margin: 0 auto;
	padding: 1rem 1.25rem;
	font-size: var(--text-xs);
	color: var(--cool-grey);
}

@media (max-width: 940px) {
	.site-footer__inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
	.site-footer__inner { grid-template-columns: 1fr; }
}

/* --------------------------------------------------------------------------
   Shared page grids
   -------------------------------------------------------------------------- */

.home-welcome__grid,
.robot-intro,
.impact-outreach-teaser,
.home-sponsors__grid {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: clamp(1.5rem, 4vw, 3.5rem);
	align-items: center;
}
.contact-layout {
	display: grid;
	grid-template-columns: 1.5fr 1fr;
	gap: clamp(1.5rem, 4vw, 3.5rem);
	align-items: start;
}
.current-season {
	display: grid;
	grid-template-columns: 1.3fr 1fr;
	gap: clamp(1.5rem, 4vw, 3rem);
	align-items: start;
}
.season-single {
	display: grid;
	grid-template-columns: 1.3fr 1fr;
	gap: clamp(1.5rem, 4vw, 3rem);
	align-items: start;
}
.teaser-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }

@media (max-width: 820px) {
	.home-welcome__grid,
	.robot-intro,
	.impact-outreach-teaser,
	.home-sponsors__grid,
	.contact-layout,
	.current-season,
	.season-single,
	.teaser-pair { grid-template-columns: 1fr; }
}