/* Diamond Markdown — diamondmarkdown.com landing */

:root {
	--bg:          #0a0e1a;
	--bg-elev:     #10162a;
	--bg-elev-2:   #151b30;
	--border:      #1f2740;
	--border-strong: #2b3658;
	--fg:          #e7ecff;
	--fg-dim:      #98a2c7;
	--fg-muted:    #7482a8;
	--accent:      #7dd3fc;
	--accent-2:    #a855f7;
	--amber:       #fbbf24;
	--danger:      #fb7185;

	--sans: 'Bricolage Grotesque', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
	--body: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
	--mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

	--radius: 10px;
	--max: 1100px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
	font-family: var(--body);
	background: var(--bg);
	color: var(--fg);
	font-size: 17px;
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ---------- Aurora backdrop ---------- */

.aurora {
	position: fixed;
	inset: 0;
	pointer-events: none;
	z-index: 0;
	overflow: hidden;
}
.aurora .glow {
	position: absolute;
	border-radius: 50%;
	filter: blur(90px);
	opacity: 0.55;
	mix-blend-mode: screen;
}
.aurora .a {
	width: 650px; height: 650px;
	background: radial-gradient(circle, #7dd3fc 0%, transparent 70%);
	top: -120px; left: -180px;
}
.aurora .b {
	width: 720px; height: 720px;
	background: radial-gradient(circle, #a855f7 0%, transparent 70%);
	top: 180px; right: -220px;
	opacity: 0.42;
}
.aurora .c {
	width: 520px; height: 520px;
	background: radial-gradient(circle, #fbbf24 0%, transparent 70%);
	top: 60vh; left: 30vw;
	opacity: 0.18;
}
.aurora .grid {
	position: absolute;
	inset: 0;
	background-image: radial-gradient(circle at 1px 1px, rgba(231, 236, 255, 0.09) 1px, transparent 0);
	background-size: 26px 26px;
	mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 40%, transparent 100%);
	-webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, black 40%, transparent 100%);
}

main {
	position: relative;
	z-index: 1;
}

/* ---------- Nav ---------- */

.nav {
	position: relative;
	z-index: 2;
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 18px 28px;
	max-width: var(--max);
	margin: 0 auto;
}
.nav nav {
	display: flex;
	gap: 22px;
	align-items: center;
	font-size: 0.92rem;
}
.nav nav a {
	color: var(--fg-dim);
	transition: color 0.15s;
}
.nav nav a:hover { color: var(--fg); }
.nav nav .gh {
	padding: 6px 14px;
	border: 1px solid var(--border);
	border-radius: 6px;
	font-family: var(--mono);
	font-size: 0.84rem;
}
.nav nav .gh:hover { border-color: var(--accent); color: var(--accent); }

.wm-small {
	display: inline-flex;
	align-items: center;
	gap: 0.6em;
	font-family: var(--sans);
	font-weight: 700;
	font-size: 1.05rem;
	letter-spacing: -0.01em;
}
.wm-small .crystal { width: 22px; height: 22px; }

/* ---------- Hero ---------- */

.hero {
	max-width: var(--max);
	margin: 4rem auto 6rem;
	padding: 0 28px;
	text-align: center;
}
.wm-xl {
	display: inline-flex;
	flex-direction: column;
	align-items: center;
	gap: 22px;
	margin-bottom: 24px;
}
.wm-xl .crystal.big {
	width: 120px;
	height: 120px;
	filter: drop-shadow(0 6px 20px rgba(125, 211, 252, 0.3));
}
.wm-xl .crystal.big .facet { transform-origin: 50px 50px; }
.wm-xl .crystal.big .glint {
	animation: glint 5s ease-in-out infinite;
	transform-origin: 50% 50%;
}
@keyframes glint {
	0%, 100% { opacity: 0; transform: translate(0, 0); }
	50% { opacity: 1; transform: translate(6px, -3px); }
}
.wm-xl h1 {
	font-family: var(--sans);
	font-weight: 800;
	font-size: clamp(2.4rem, 6vw, 4.2rem);
	letter-spacing: -0.035em;
	line-height: 1;
	margin: 0;
	background: linear-gradient(180deg, #ffffff 0%, #aab5dc 100%);
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
}

.tag {
	font-family: var(--sans);
	font-weight: 500;
	font-size: clamp(1.1rem, 2vw, 1.35rem);
	color: var(--fg-dim);
	margin: 0 0 24px;
	letter-spacing: -0.01em;
}
.lede {
	max-width: 620px;
	margin: 0 auto 32px;
	color: var(--fg);
	font-size: 1.05rem;
	line-height: 1.65;
}
.lede .wikilink {
	font-family: var(--mono);
	font-size: 0.95em;
	color: var(--accent);
	background: rgba(125, 211, 252, 0.08);
	padding: 0 6px;
	border-radius: 4px;
}

.cta {
	display: flex;
	justify-content: center;
	gap: 12px;
	margin-bottom: 20px;
	flex-wrap: wrap;
}
.btn {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 11px 22px;
	border-radius: 7px;
	border: 1px solid var(--border-strong);
	background: var(--bg-elev);
	color: var(--fg);
	font-family: var(--body);
	font-size: 0.96rem;
	font-weight: 500;
	cursor: pointer;
	transition: border-color 0.15s, color 0.15s, transform 0.12s;
}
.btn:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.btn.primary {
	background: linear-gradient(135deg, #7dd3fc 0%, #818cf8 100%);
	border-color: transparent;
	color: #0a0e1a;
	font-weight: 600;
}
.btn.primary:hover { color: #0a0e1a; filter: brightness(1.08); }
.btn.primary span.mono { color: #0a0e1a; font-weight: 700; }

.sub {
	color: var(--fg-muted);
	font-size: 0.82rem;
}

/* ---------- Why (3 cards) ---------- */

.why {
	max-width: var(--max);
	margin: 0 auto 6rem;
	padding: 0 28px;
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 20px;
}
.why-card {
	background: var(--bg-elev);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 28px 24px;
	transition: border-color 0.18s, transform 0.18s;
	position: relative;
	overflow: hidden;
}
.why-card::before {
	content: '';
	position: absolute;
	top: 0; left: 0; right: 0;
	height: 2px;
	background: linear-gradient(90deg, transparent, var(--accent), transparent);
	opacity: 0;
	transition: opacity 0.2s;
}
.why-card:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.why-card:hover::before { opacity: 1; }
.why-card .icon {
	font-size: 1.6rem;
	color: var(--accent);
	margin-bottom: 10px;
}
.why-card h3 {
	font-family: var(--sans);
	font-size: 1.2rem;
	font-weight: 700;
	margin: 0 0 10px;
	letter-spacing: -0.01em;
}
.why-card p {
	color: var(--fg-dim);
	font-size: 0.94rem;
	margin: 0;
	line-height: 1.6;
}

/* ---------- Section heads ---------- */

.section-head {
	text-align: center;
	margin-bottom: 46px;
}
.section-head .eyebrow {
	font-size: 0.72rem;
	text-transform: uppercase;
	letter-spacing: 0.2em;
	color: var(--fg-muted);
}
.section-head h2 {
	font-family: var(--sans);
	font-size: clamp(1.7rem, 3vw, 2.3rem);
	font-weight: 700;
	letter-spacing: -0.025em;
	line-height: 1.2;
	margin: 12px auto 0;
	max-width: 720px;
	color: var(--fg);
}

/* ---------- Features grid ---------- */

.features {
	max-width: var(--max);
	margin: 0 auto 6rem;
	padding: 0 28px;
}
.feature-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 14px;
}
.f {
	display: flex;
	gap: 14px;
	padding: 18px 20px;
	background: var(--bg-elev);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	transition: border-color 0.15s, transform 0.15s;
}
.f:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.f-icon {
	flex-shrink: 0;
	width: 34px; height: 34px;
	display: flex; align-items: center; justify-content: center;
	background: var(--bg-elev-2);
	border: 1px solid var(--border);
	border-radius: 7px;
	color: var(--accent);
	font-family: var(--mono);
	font-size: 0.95rem;
}
.f strong {
	display: block;
	font-family: var(--sans);
	font-weight: 700;
	font-size: 0.98rem;
	margin-bottom: 2px;
}
.f p {
	margin: 0;
	color: var(--fg-dim);
	font-size: 0.84rem;
	line-height: 1.5;
}

/* ---------- Run section ---------- */

.run {
	max-width: var(--max);
	margin: 0 auto 6rem;
	padding: 0 28px;
}
.code {
	max-width: 720px;
	margin: 0 auto;
	background: var(--bg-elev);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 22px 26px;
	overflow-x: auto;
	font-family: var(--mono);
	font-size: 0.92rem;
	line-height: 1.8;
	color: var(--fg);
}
.code .c-prompt { color: var(--accent); margin-right: 10px; user-select: none; }
.run-note {
	max-width: 720px;
	margin: 22px auto 0;
	color: var(--fg-dim);
	font-size: 0.92rem;
	text-align: center;
}
.run-note.dim { color: var(--fg-muted); font-size: 0.84rem; }

/* ---------- Compare ---------- */

.compare {
	max-width: var(--max);
	margin: 0 auto 6rem;
	padding: 0 28px;
}
.compare-body {
	max-width: 700px;
	margin: 0 auto;
	text-align: center;
	color: var(--fg-dim);
	font-size: 1rem;
	line-height: 1.75;
}
.compare-body em { color: var(--fg); font-style: italic; }

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

.foot {
	border-top: 1px solid var(--border);
	padding: 40px 28px 60px;
	margin-top: 4rem;
	position: relative;
	z-index: 1;
}
.foot-inner {
	max-width: var(--max);
	margin: 0 auto;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 20px;
	text-align: center;
}
.foot-brand {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	font-family: var(--sans);
	font-weight: 700;
	font-size: 0.95rem;
	color: var(--fg-dim);
}
.foot-brand .crystal.tiny { width: 16px; height: 16px; }
.foot-nav {
	display: flex;
	gap: 22px;
	flex-wrap: wrap;
	justify-content: center;
	font-size: 0.9rem;
}
.foot-nav a {
	color: var(--fg-muted);
	transition: color 0.15s;
}
.foot-nav a:hover { color: var(--accent); }
.foot-fine {
	color: var(--fg-muted);
	font-size: 0.76rem;
}
.foot-fine a { color: var(--fg-dim); }
.foot-fine a:hover { color: var(--accent); }

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
	.why, .feature-grid { grid-template-columns: repeat(2, 1fr); }
	.nav nav a:not(.gh) { display: none; }
}
@media (max-width: 600px) {
	.hero { margin: 2.5rem auto 4rem; }
	.wm-xl .crystal.big { width: 88px; height: 88px; }
	.why, .feature-grid { grid-template-columns: 1fr; }
	.nav { padding: 14px 18px; }
	.hero, .why, .features, .run, .compare { padding: 0 18px; }
	.code { padding: 16px 18px; font-size: 0.82rem; }
}

@media (prefers-reduced-motion: reduce) {
	.wm-xl .crystal.big .glint { animation: none; }
	*, *::before, *::after {
		transition-duration: 0.01ms !important;
		animation-duration: 0.01ms !important;
	}
}