/* ===================================================================
	 Reset + base
	 =================================================================== */

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

* { margin: 0; padding: 0; }

html {
	-webkit-font-smoothing: antialiased;
	text-rendering: optimizeLegibility;
	scroll-behavior: smooth;

	font-size: 13px;
}

@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	*, *::before, *::after {
		animation-duration: 0.001ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.001ms !important;
	}
}

body {
	background: var(--color-bg);
	color: var(--color-fg);
	font-family: var(--font-sans);
	font-size: var(--step-md);
	line-height: 1.55;
	font-weight: 400;
	overflow-x: hidden;
	min-height: 100svh;
	letter-spacing: -0.01em;
}

img, svg, video, canvas { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }
ul, ol { list-style: none; }
::selection { background: var(--color-accent); color: #fff; }

:focus-visible {
	outline: 2px solid var(--color-accent);
	outline-offset: 3px;
	border-radius: 2px;
}

/* Typography */
h1, h2, h3, h4 {
	font-weight: 600;
	letter-spacing: -0.025em;
	line-height: 1.04;
	text-wrap: balance;
}

@media (max-width: 720px) {
	h1, h2, h3, h4 {
		text-wrap: wrap;
	}
}

p { text-wrap: pretty; }

strong { font-weight: 600; }

/* Layout helpers */
.container {
	width: 100%;
	max-width: var(--container-max);
	margin-inline: auto;
	padding-inline: var(--gutter);
}
.container--narrow { max-width: var(--container-narrow); }
.container--wide { max-width: var(--container-wide); }

.stack > * + * { margin-block-start: var(--space-md); }
.stack-lg > * + * { margin-block-start: var(--space-lg); }

/* Eyebrow / labels */
.eyebrow {
	font-family: var(--font-mono);
	font-size: var(--step-2xs);
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--color-fg-muted);
	display: inline-flex;
	align-items: center;
	gap: 0.6em;
}
.eyebrow::before {
	content: "";
	width: 1.6em; height: 1px;
	background: var(--color-accent);
	display: inline-block;
}

.section-label {
	font-family: var(--font-mono);
	font-size: var(--step-2xs);
	letter-spacing: 0.22em;
	text-transform: uppercase;
	color: var(--color-fg-dim);
}

/* Buttons */
.btn {
	--btn-bg: var(--color-fg);
	--btn-fg: var(--color-bg);
	display: inline-flex;
	align-items: center;
	gap: 0.7em;
	padding: 0.95em 1.5em;
	border-radius: var(--radius-pill);
	background: var(--btn-bg);
	color: var(--btn-fg);
	font-family: var(--font-mono);
	font-size: var(--step-xs);
	letter-spacing: 0.02em;
	font-weight: 500;
	transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), background var(--dur) var(--ease-out);
	will-change: transform;
	position: relative;
}
.btn .btn-arrow {
	transition: transform var(--dur) var(--ease-out);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 14px 40px -16px var(--color-accent); }
.btn:hover .btn-arrow { transform: translateX(4px); }

.btn--accent { --btn-bg: var(--color-accent); --btn-fg: #fff; }
.btn--ghost { --btn-bg: transparent; --btn-fg: var(--color-fg); box-shadow: inset 0 0 0 1px var(--color-line-strong); }
.btn--ghost:hover { box-shadow: inset 0 0 0 1px var(--color-accent); }
.btn--lg { padding: 1.15em 2em; font-size: var(--step-sm); }

/* Inverted section blocks */
.invert { color: var(--color-fg-invert); }
.invert .eyebrow { color: var(--color-fg-invert-muted); }
.invert .section-label { color: var(--color-fg-invert-muted); }
.invert .btn--ghost { --btn-fg: var(--color-fg-invert); box-shadow: inset 0 0 0 1px var(--color-line-invert); }

/* Section base */
.section {
	position: relative;
}
.section--tight { padding-block: clamp(3rem, 2rem + 5vw, 6rem); }

.divider {
	border: 0;
	height: 1px;
	background: var(--color-line);
	margin-block: 0;
}
.invert .divider { background: var(--color-line-invert); }

/* Reveal: elements that animate in on scroll */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out); }
.reveal.is-in { opacity: 1; transform: none; }

/* Stagger helpers via --i custom property */
.stagger > * {
	opacity: 0;
	transform: translateY(24px);
	transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out), background var(--dur-slow) var(--ease-out);
	transition-delay: calc(var(--i, 0) * 120ms);
}
.stagger > *.is-in {
	opacity: 1;
	transform: none;
}

@media (prefers-reduced-motion: reduce) {
	.reveal, .stagger > * { opacity: 1 !important; transform: none !important; }
}

@view-transition {
	navigation: auto;
}