/* ============================================================
   Skyline — base.css
   Reset, tokens, typography, layout primitives.
   Palette + type scale from the v4 "plug and play" design.
   ============================================================ */

:root {
	--c-navy: #06152c;
	--c-navy-2: #0b2144;
	--c-royal: #1f4ea1;
	--c-sky: #66a8ff;
	--c-ice: #eef5ff;
	--c-light: #f5f8fc;
	--c-white: #ffffff;
	--c-ink: #111827;
	--c-muted: #5b6678;
	--c-border: rgba(18, 45, 88, 0.14);

	--shadow-1: 0 14px 45px rgba(8, 31, 62, 0.08);
	--shadow-2: 0 24px 70px rgba(4, 16, 35, 0.18);

	--radius-sm: 12px;
	--radius-md: 26px;
	--radius-lg: 34px;
	--radius-pill: 999px;

	--ff-sans: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
	--ff-display: var(--ff-sans);

	--container-max: 1180px;
	--container-pad: clamp(14px, 3vw, 20px);

	--header-h: 82px;
}

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

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

body {
	margin: 0;
	font-family: var(--ff-sans);
	font-size: 16px;
	line-height: 1.55;
	color: var(--c-ink);
	background: var(--c-white);
	-webkit-font-smoothing: antialiased;
	text-rendering: optimizeLegibility;
}

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

a { color: var(--c-royal); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4, h5, h6 {
	font-family: var(--ff-display);
	color: var(--c-ink);
	margin: 0 0 0.6em;
	line-height: 1.1;
	font-weight: 900;
	letter-spacing: -0.03em;
}

h1 { font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem); line-height: 1; letter-spacing: -0.05em; }
h2 { font-size: clamp(1.75rem, 2.5vw + 1rem, 2.75rem); letter-spacing: -0.04em; }
h3 { font-size: 1.3rem; letter-spacing: -0.02em; }

p { margin: 0 0 1em; }

/* Layout helpers */
.container {
	width: 100%;
	max-width: var(--container-max);
	margin: 0 auto;
	padding-inline: var(--container-pad);
}
.container--narrow { max-width: 800px; }

/* Shared editorial pieces (kicker + big title + lede) */
.kicker {
	color: var(--c-royal);
	text-transform: uppercase;
	letter-spacing: 0.16em;
	font-weight: 900;
	font-size: 12px;
	margin: 0 0 14px;
}
.section-title {
	color: var(--c-navy);
	font-size: clamp(34px, 4vw, 58px);
	line-height: 1;
	letter-spacing: -0.045em;
	margin-bottom: 22px;
	font-weight: 900;
	text-align: left;
}
.lede {
	color: var(--c-muted);
	font-size: 19px;
	max-width: 720px;
}

/* Buttons */
.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	min-height: 48px;
	padding: 14px 22px;
	border-radius: var(--radius-pill);
	font-weight: 800;
	font-size: 14px;
	letter-spacing: 0.01em;
	border: 1px solid transparent;
	cursor: pointer;
	line-height: 1;
	text-decoration: none;
	transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.btn:hover { transform: translateY(-2px); text-decoration: none; }
.btn:active { transform: translateY(0); }
.btn--primary {
	background: linear-gradient(135deg, #1f4ea1, #3179e6);
	color: var(--c-white);
	box-shadow: 0 16px 40px rgba(31, 78, 161, 0.28);
}
.btn--primary:hover { color: var(--c-white); }
.btn--light {
	background: var(--c-white);
	color: var(--c-navy);
}
.btn--light:hover { color: var(--c-navy); }
.btn--outline,
.btn--ghost {
	background: transparent;
	border-color: rgba(255, 255, 255, 0.4);
	color: var(--c-white);
}
.btn--outline:hover,
.btn--ghost:hover { border-color: rgba(255, 255, 255, 0.75); color: var(--c-white); }
.btn--link { background: transparent; color: var(--c-white); padding-inline: 0; min-height: 0; }
.btn--link:hover { text-decoration: underline; transform: none; }

/* Accessibility */
.screen-reader-text {
	border: 0; clip: rect(1px,1px,1px,1px); clip-path: inset(50%);
	height: 1px; width: 1px; overflow: hidden; position: absolute !important;
	word-wrap: normal !important;
}
.skip-link {
	position: absolute; top: -100px; left: 12px;
	background: var(--c-white); color: var(--c-navy);
	padding: 12px 16px; z-index: 100;
}
.skip-link:focus { top: 12px; }

:focus-visible {
	outline: 2px solid var(--c-sky);
	outline-offset: 2px;
}

/* Entrance animation used on hero content */
.reveal { animation: skyline-fade-up 0.55s ease both; }
@keyframes skyline-fade-up {
	from { opacity: 0; transform: translateY(18px); }
	to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
	.reveal { animation: none; }
}