/* Starfab — the site. The game's own dark kit (reports/how-to/brand-html.md): one theme, because the
   game is a dark game and so is space. */

@font-face {
	font-family: "Plex Sans";
	src: url("../fonts/plex-sans.woff2") format("woff2");
	font-weight: 100 700;
	font-display: swap;
}
@font-face {
	font-family: "Plex Mono";
	src: url("../fonts/plex-mono.woff2") format("woff2");
	font-weight: 500;
	font-display: swap;
}

:root {
	color-scheme: dark;
	--bg: #0b0f12;
	--panel: #121a20;
	--raised: #1b252d;
	--line: #26333c;
	--text: #e8eff4;
	--text-2: #9fb0bc;
	--muted: #667885;
	--action: #f2711c;
	--action-hi: #ff8a3d;
	--data: #3fc7e0;
	--ok: #37c07a;
	--sans: "Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
	--mono: "Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
	--gutter: clamp(16px, 4vw, 48px);
	--wrap: 1180px;
	--radius: 14px;
	--top-h: 68px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
	margin: 0;
	background: var(--bg);
	color: var(--text);
	font: 400 17px/1.6 var(--sans);
	overflow-x: hidden;
	-webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
[hidden] { display: none !important; }
a { color: inherit; }
h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }
h2 { font-size: clamp(30px, 4.4vw, 52px); line-height: 1.08; }
h3 { font-size: 20px; line-height: 1.25; }
p { margin: 0; }
.mono { font-family: var(--mono); }

.wrap { width: min(var(--wrap), 100% - 2 * var(--gutter)); margin-inline: auto; }

.wordmark { fill: currentColor; display: block; }

/* ---- header ---------------------------------------------------------------------------------- */

.top {
	position: fixed; inset: 0 0 auto; z-index: 50;
	height: var(--top-h);
	display: flex; align-items: center; gap: 24px;
	padding: 0 var(--gutter);
	transition: background .35s, border-color .35s, backdrop-filter .35s;
	border-bottom: 1px solid transparent;
}
.top.is-solid {
	background: rgba(11, 15, 18, .72);
	backdrop-filter: blur(14px) saturate(140%);
	-webkit-backdrop-filter: blur(14px) saturate(140%);
	border-color: rgba(38, 51, 60, .7);
}
.top__brand { color: var(--text); flex: none; }
.top__brand .wordmark { height: 16px; width: auto; }
.top__nav { display: flex; gap: 26px; margin-left: 18px; }
.top__nav a {
	color: var(--text-2); text-decoration: none; font-size: 15px;
	transition: color .2s;
}
.top__nav a:hover { color: var(--text); }
.top__end { margin-left: auto; display: flex; align-items: center; gap: 14px; }

.lang { display: flex; border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.lang button {
	all: unset; cursor: pointer;
	font: 500 12px/1 var(--mono); letter-spacing: .06em;
	color: var(--muted); padding: 7px 10px; border-radius: 999px;
	transition: color .2s, background .2s;
}
.lang button:hover { color: var(--text); }
.lang button[aria-pressed="true"] { color: var(--bg); background: var(--text); }
.lang button:focus-visible { outline: 2px solid var(--data); outline-offset: 2px; }

/* ---- buttons --------------------------------------------------------------------------------- */

.btn {
	display: inline-flex; align-items: center; justify-content: center; gap: 10px;
	min-height: 52px; padding: 0 26px; border-radius: 999px;
	font: 600 16px/1 var(--sans); text-decoration: none; white-space: nowrap;
	transition: transform .2s, background .2s, border-color .2s, box-shadow .2s, color .2s;
}
.btn:focus-visible { outline: 2px solid var(--data); outline-offset: 3px; }
.btn--small { min-height: 40px; padding: 0 18px; font-size: 14px; }
.btn--action {
	background: var(--action); color: #140a03;
	box-shadow: 0 8px 30px -8px rgba(242, 113, 28, .65);
}
.btn--action:hover { background: var(--action-hi); transform: translateY(-2px); }
.btn--ghost {
	color: var(--text); border: 1px solid rgba(232, 239, 244, .22);
	background: rgba(18, 26, 32, .35); backdrop-filter: blur(6px);
}
.btn--ghost:hover { border-color: var(--text); transform: translateY(-2px); }
.btn--discord { background: #5865f2; color: #fff; }
.btn--discord:hover { background: #6a76ff; transform: translateY(-2px); }
.btn--discord svg { width: 22px; height: 22px; }

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

.hero {
	position: relative; min-height: 100svh;
	display: flex; align-items: center;
	padding: calc(var(--top-h) + 24px) var(--gutter) 96px;
	overflow: hidden; isolation: isolate;
}
.hero__sky { position: absolute; inset: 0; z-index: -1; }
.layer { position: absolute; will-change: transform; }
.stars { inset: -10% 0; width: 100%; height: 120%; }
.nebula {
	inset: -12% -8%; width: 116%; height: 124%; max-width: none; object-fit: cover;
	opacity: .78; object-position: 30% 50%;
	mask-image: radial-gradient(ellipse 80% 70% at 62% 42%, #000 40%, transparent 78%);
	-webkit-mask-image: radial-gradient(ellipse 80% 70% at 62% 42%, #000 40%, transparent 78%);
}

/* The planet is a render on black: a black disc of its size hides the stars behind it, and the image
   is screened over, so the black vanishes and the halo adds to the sky (tools/shot_site_planet.gd). */
.planet {
	position: absolute;
	width: min(92vh, 64vw); aspect-ratio: 1;
	right: -9vw; top: 50%; margin-top: calc(min(92vh, 64vw) / -2);
}
.planet__disc {
	position: absolute; inset: 16.6%;
	border-radius: 50%; background: #000;
}
.planet__img { position: absolute; inset: 0; width: 100%; height: 100%; mix-blend-mode: screen; }
.orbit {
	position: absolute; inset: -14% -22%; width: 144%; height: 128%;
	color: rgba(63, 199, 224, .75); overflow: visible; pointer-events: none;
	filter: drop-shadow(0 0 6px rgba(63, 199, 224, .45));
}
.orbit__hex { fill: var(--action); filter: drop-shadow(0 0 10px rgba(242, 113, 28, .9)); }
.belt { inset: 0; width: 100%; height: 100%; }
.hero__fade {
	position: absolute; inset: 0;
	background:
		linear-gradient(to bottom, transparent 68%, var(--bg)),
		linear-gradient(100deg, rgba(11, 15, 18, .86) 0%, rgba(11, 15, 18, .62) 34%, transparent 58%);
}

.hero__body { position: relative; max-width: 620px; }
.badge {
	display: inline-flex; align-items: center; gap: 10px;
	font: 500 13px/1 var(--mono); letter-spacing: .04em; color: var(--text-2);
	border: 1px solid var(--line); background: rgba(18, 26, 32, .55);
	padding: 9px 14px; border-radius: 999px; backdrop-filter: blur(6px);
}
.badge__dot {
	width: 8px; height: 8px; border-radius: 50%; background: var(--action);
	box-shadow: 0 0 0 0 rgba(242, 113, 28, .7); animation: pulse 2.4s infinite;
}
@keyframes pulse {
	0% { box-shadow: 0 0 0 0 rgba(242, 113, 28, .6); }
	70% { box-shadow: 0 0 0 10px rgba(242, 113, 28, 0); }
	100% { box-shadow: 0 0 0 0 rgba(242, 113, 28, 0); }
}
.hero__title { margin: 28px 0 18px; }
.wordmark--hero { width: min(560px, 86vw); height: auto; filter: drop-shadow(0 6px 40px rgba(63, 199, 224, .25)); }
.hero__tagline {
	font: 500 clamp(15px, 1.6vw, 18px)/1.3 var(--mono);
	color: var(--data); letter-spacing: .05em; text-transform: uppercase;
}
.hero__lead { margin-top: 20px; font-size: clamp(17px, 1.7vw, 20px); color: var(--text-2); max-width: 540px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 10px 22px; padding: 0; margin: 30px 0 0; }
.chips li { font-size: 14px; color: var(--text-2); display: flex; align-items: center; gap: 9px; }
.chips li::before { content: ""; width: 6px; height: 6px; border-radius: 1px; background: var(--data); transform: rotate(45deg); }

.hero__down {
	position: absolute; left: 50%; bottom: 28px; translate: -50% 0;
	width: 26px; height: 42px; border: 1.5px solid rgba(232, 239, 244, .35); border-radius: 14px;
}
.hero__down span {
	position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px;
	border-radius: 2px; background: var(--text); animation: wheel 2s infinite;
}
@keyframes wheel { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* ---- sections -------------------------------------------------------------------------------- */

.section { position: relative; padding: clamp(80px, 12vw, 150px) 0; }
.eyebrow {
	font: 500 13px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
	color: var(--action); margin-bottom: 18px;
}
.section__lead { margin-top: 20px; max-width: 720px; font-size: clamp(17px, 1.6vw, 20px); color: var(--text-2); }

.cards {
	display: grid; gap: 18px; margin-top: 56px;
	grid-template-columns: repeat(auto-fill, minmax(min(100%, 330px), 1fr));
}
.card {
	position: relative; padding: 30px 28px 32px;
	background: linear-gradient(180deg, rgba(27, 37, 45, .7), rgba(18, 26, 32, .7));
	border: 1px solid var(--line); border-radius: var(--radius);
	transition: border-color .3s, transform .3s;
	overflow: hidden;
}
.card::after {
	content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none;
	background: radial-gradient(420px circle at var(--mx, 50%) var(--my, -20%), rgba(63, 199, 224, .12), transparent 45%);
	opacity: 0; transition: opacity .3s;
}
.card:hover { border-color: rgba(63, 199, 224, .45); transform: translateY(-3px); }
.card:hover::after { opacity: 1; }
.card img { width: 56px; height: 56px; opacity: .92; }
.card h3 { margin: 20px 0 10px; }
.card p { color: var(--text-2); font-size: 16px; }

/* planets */
.planets { overflow: hidden; }
.planets__row {
	display: flex; justify-content: center; align-items: center; gap: clamp(8px, 2.5vw, 34px);
	margin-top: 64px; padding: 0 var(--gutter);
}
.planets__row img {
	width: clamp(92px, 14vw, 200px); height: auto; mix-blend-mode: screen;
	animation: float 9s ease-in-out infinite;
}
.planets__row img:nth-child(2n) { animation-delay: -3s; margin-top: 70px; }
.planets__row img:nth-child(3n) { animation-delay: -6s; }
@keyframes float { 50% { translate: 0 -12px; } }

/* screenshots */
.shots__grid { display: grid; gap: 22px; margin-top: 56px; grid-template-columns: repeat(2, 1fr); }
.shot { margin: 0; }
.shot img {
	width: 100%; aspect-ratio: 3456 / 2104; object-fit: cover;
	border-radius: var(--radius); border: 1px solid var(--line);
	background: var(--panel);
	box-shadow: 0 30px 60px -30px rgba(0, 0, 0, .8);
	transition: transform .4s;
}
.shot:hover img { transform: scale(1.015); }
.shot figcaption { margin-top: 12px; color: var(--text-2); font-size: 15px; }

/* free + alpha */
.promise__grid { display: grid; gap: 22px; grid-template-columns: 1fr 1fr; }
.panel {
	padding: clamp(30px, 4.6vw, 60px); border-radius: calc(var(--radius) + 8px);
	border: 2px solid var(--line); position: relative; overflow: hidden;
}
.panel .eyebrow {
	display: inline-block; padding: 9px 14px; border-radius: 999px; font-size: 15px; font-weight: 600;
	background: rgba(242, 113, 28, .16);
}
.panel h2 { font-size: clamp(32px, 4.2vw, 54px); line-height: 1.1; }
.panel p:last-child { margin-top: 20px; color: var(--text); font-size: clamp(17px, 1.6vw, 20px); line-height: 1.6; }
.panel--free {
	border-color: rgba(55, 192, 122, .7);
	background: radial-gradient(130% 130% at 0% 0%, rgba(55, 192, 122, .3), transparent 60%), var(--panel);
}
.panel--free .eyebrow { color: var(--ok); background: rgba(55, 192, 122, .16); }
.panel--alpha {
	border-color: rgba(242, 113, 28, .7);
	background: radial-gradient(130% 130% at 100% 0%, rgba(242, 113, 28, .3), transparent 60%), var(--panel);
}

/* download */
.download { overflow: hidden; }
.download__sky { position: absolute; inset: 0; z-index: -1; }
.download__sky img {
	position: absolute; inset: -10% -5%; width: 110%; height: 120%; max-width: none; object-fit: cover; opacity: .45;
	mask-image: linear-gradient(to bottom, transparent, #000 30%, #000 70%, transparent);
	-webkit-mask-image: linear-gradient(to bottom, transparent, #000 30%, #000 70%, transparent);
}
.platforms { display: grid; gap: 18px; margin-top: 48px; grid-template-columns: repeat(3, 1fr); }
.platform {
	display: grid; gap: 6px; padding: 28px; text-decoration: none;
	border-radius: var(--radius); border: 1px solid var(--line);
	background: rgba(18, 26, 32, .8); backdrop-filter: blur(8px);
	transition: border-color .25s, transform .25s, background .25s;
}
.platform:hover { border-color: var(--action); transform: translateY(-4px); background: rgba(27, 37, 45, .9); }
.platform__name { font-size: 26px; font-weight: 600; }
.platform__meta { color: var(--text-2); font-size: 15px; }
.platform__go {
	margin-top: 18px; justify-self: start;
	font: 600 15px/1 var(--sans); color: var(--action);
	display: inline-flex; align-items: center; gap: 8px;
}
.platform__go::after { content: "↓"; transition: transform .25s; }
.platform:hover .platform__go::after { transform: translateY(3px); }
.platform[aria-disabled="true"] { pointer-events: none; opacity: .55; }
.platform[aria-disabled="true"] .platform__go { color: var(--muted); }
.platform[aria-disabled="true"] .platform__go::after { content: ""; }
/* Windows' warning is the one thing on the page meant to be read before a click, so it is loud. */
.winwarn {
	margin-top: 36px; padding: clamp(22px, 3.4vw, 40px); border: 2px solid var(--action); border-radius: 18px;
	background: rgba(242, 113, 28, .1); color: var(--text); font-size: clamp(16px, 1.6vw, 19px); line-height: 1.6;
}
.winwarn p { margin: 0 0 14px; }
.winwarn__note { font: 600 15px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--action-hi); }
.winwarn__note::before { content: "⚠ "; }
.winwarn__title { font-size: clamp(22px, 2.8vw, 32px); font-weight: 700; line-height: 1.3; }
.winwarn__safe { color: var(--ok); white-space: nowrap; }
.winwarn ol { margin: 0 0 16px; padding-left: 24px; display: grid; gap: 8px; }
.winwarn__check { padding: 12px 16px; border-radius: 12px; background: rgba(55, 192, 122, .1); border: 1px solid rgba(55, 192, 122, .4); }
.winwarn a { color: var(--data); font-weight: 600; }
.notes { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 8px; color: var(--muted); font-size: 14px; }

/* community */
.community { text-align: center; }
.community .section__lead { margin-inline: auto; }
.community__actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

/* footer */
.foot { border-top: 1px solid var(--line); padding: 34px 0 calc(34px + env(safe-area-inset-bottom)); color: var(--muted); font-size: 14px; }
.foot__row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 28px; }
.foot a { text-decoration: none; color: var(--text-2); }
.foot a:hover { color: var(--text); }
.wordmark--foot { height: 12px; width: auto; color: var(--text-2); margin-right: auto; }

/* reveal on scroll */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.2, .7, .2, 1), transform .8s cubic-bezier(.2, .7, .2, 1); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---- narrow ---------------------------------------------------------------------------------- */

@media (max-width: 1200px) and (min-width: 921px) {
	.planet { right: -20vw; }
	.hero__body { max-width: 520px; }
}
@media (max-width: 920px) {
	.top__nav { display: none; }
	/* ⚠ No opacity here: like a transform, it walls the screened image off from the sky. */
	.planet { width: 118vw; right: -46vw; top: 30%; margin-top: -59vw; }
	.hero__fade {
		background:
			linear-gradient(to top, var(--bg) 0%, rgba(11, 15, 18, .82) 38%, transparent 66%),
			linear-gradient(100deg, rgba(11, 15, 18, .5) 0%, transparent 60%);
	}
	.hero { align-items: flex-end; }
	.hero__body { padding-top: 38vh; }
	.shots__grid, .promise__grid, .platforms { grid-template-columns: 1fr; }
	.planets__row img:nth-child(n+5) { display: none; }
}
@media (max-width: 520px) {
	body { font-size: 16px; }
	.top__end .btn { display: none; }
	.btn { width: 100%; }
	.hero__actions { flex-direction: column; }
	.hero__body { padding-top: 30vh; }
}

@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	*, *::before, *::after { animation: none !important; transition: none !important; }
	.reveal { opacity: 1; transform: none; }
}