/* VAT Sentinel marketing site — single shared stylesheet. No external fonts/CDNs. */
:root {
	--ink: #0f1b2d;
	--ink-soft: #41506a;
	--muted: #6b7a92;
	--line: #e2e8f2;
	--bg: #ffffff;
	--bg-soft: #f5f8fc;
	--brand: #1463c8;
	--brand-dark: #0f4fa3;
	--brand-soft: #e7f0fc;
	--accent: #0f9d76;
	--accent-soft: #e3f6ef;
	--warn-soft: #fdf3e4;
	--warn-ink: #8a5a12;
	--radius: 12px;
	--maxw: 1080px;
	--shadow: 0 1px 2px rgba(16, 32, 60, .06), 0 8px 24px rgba(16, 32, 60, .06);
	--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
	margin: 0;
	font-family: var(--font);
	color: var(--ink);
	background: var(--bg);
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
}
h1, h2, h3 { line-height: 1.2; color: var(--ink); }
h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); letter-spacing: -.01em; margin-top: 0; }
h3 { font-size: 1.15rem; }
p { color: var(--ink-soft); }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.section { padding: 64px 0; }
.section-sm { padding: 40px 0; }
.bg-soft { background: var(--bg-soft); }
.center { text-align: center; }
.lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 60ch; }
.center .lead { margin-left: auto; margin-right: auto; }
.eyebrow { text-transform: uppercase; letter-spacing: .08em; font-size: .78rem; font-weight: 700; color: var(--brand); }

/* Header */
.site-header {
	position: sticky; top: 0; z-index: 50;
	background: rgba(255, 255, 255, .92);
	backdrop-filter: saturate(180%) blur(8px);
	border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--ink); font-size: 1.1rem; }
.brand:hover { text-decoration: none; }
.brand svg { width: 28px; height: 28px; display: block; }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { color: var(--ink-soft); font-weight: 600; font-size: .95rem; }
.nav-links a:hover { color: var(--brand); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 4px 0; transition: .2s; }

/* Buttons */
.btn {
	display: inline-flex; align-items: center; gap: 8px;
	padding: 12px 20px; border-radius: 10px; font-weight: 700; font-size: .98rem;
	border: 1px solid transparent; cursor: pointer; transition: .15s; text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); color: #fff; }
.btn-ghost { background: #fff; color: var(--brand); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--brand); }
.btn-lg { padding: 15px 26px; font-size: 1.05rem; }
.btn[aria-disabled="true"] { opacity: .6; cursor: not-allowed; }
.btn[aria-disabled="true"]:hover { transform: none; }
.pill {
	display: inline-block; font-size: .68rem; font-weight: 700; text-transform: uppercase;
	letter-spacing: .04em; padding: 2px 8px; border-radius: 999px; margin-left: 6px;
	background: var(--warn-soft); color: var(--warn-ink); vertical-align: middle;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; }
.center .cta-row { justify-content: center; }

/* Hero */
.hero { padding: 72px 0 56px; }
.hero h1 { margin: 0 0 18px; }
.hero .lead { margin-bottom: 26px; }
.trust-line { margin-top: 18px; font-size: .9rem; color: var(--muted); }

/* Cards / grids */
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
	background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
	padding: 24px; box-shadow: var(--shadow);
}
.card h3 { margin-top: 0; display: flex; align-items: center; gap: 10px; }
.card .ico { width: 34px; height: 34px; flex: none; color: var(--brand); }
.card.accent .ico { color: var(--accent); }

/* Steps */
.steps { counter-reset: step; display: grid; gap: 18px; }
.step { display: flex; gap: 16px; align-items: flex-start; }
.step .num {
	flex: none; width: 34px; height: 34px; border-radius: 999px; background: var(--brand-soft);
	color: var(--brand-dark); font-weight: 800; display: grid; place-items: center;
}

/* Pricing */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; align-items: stretch; }
.price-card { display: flex; flex-direction: column; }
.price-card.featured { border-color: var(--brand); box-shadow: 0 8px 30px rgba(20, 99, 200, .14); }
.price-card .amount { font-size: 2.2rem; font-weight: 800; color: var(--ink); }
.price-card .amount small { font-size: .95rem; font-weight: 600; color: var(--muted); }
.price-card ul { list-style: none; padding: 0; margin: 16px 0 22px; }
.price-card li { padding: 6px 0 6px 26px; position: relative; color: var(--ink-soft); }
.price-card li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 800; }
.price-card .btn { margin-top: auto; }

/* Feature comparison table */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table.compare { width: 100%; border-collapse: collapse; min-width: 520px; background: #fff; }
table.compare th, table.compare td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--line); }
table.compare thead th { background: var(--bg-soft); font-size: .9rem; }
table.compare td.col, table.compare th.col { text-align: center; width: 110px; }
.yes { color: var(--accent); font-weight: 800; }
.no { color: #c2ccda; }

/* Callout / notes */
.note { border-radius: var(--radius); padding: 16px 18px; border: 1px solid var(--line); background: var(--bg-soft); }
.note.warn { background: var(--warn-soft); border-color: #f0dcb8; color: var(--warn-ink); }
.note.brand { background: var(--brand-soft); border-color: #cfe0f7; }
.note.legal { font-size: .9rem; color: var(--muted); }

/* FAQ */
.faq details { border: 1px solid var(--line); border-radius: 10px; padding: 4px 18px; margin-bottom: 12px; background: #fff; }
.faq summary { cursor: pointer; font-weight: 700; padding: 14px 0; color: var(--ink); list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--brand); font-weight: 800; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin-top: 0; }

/* Prose pages (privacy/refund/support/docs) */
.prose { max-width: 760px; }
.prose h2 { margin-top: 36px; }
.prose h3 { margin-top: 26px; }
.prose ul { padding-left: 20px; }
.prose li { margin: 6px 0; color: var(--ink-soft); }
.prose code { background: var(--bg-soft); padding: 2px 6px; border-radius: 6px; font-size: .9em; }
.toc { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; }
.toc ul { margin: 8px 0 0; }

/* Screenshot frame */
.shot { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); background: #fff; }
.shot img { display: block; }

/* Footer */
.site-footer { background: var(--ink); color: #c7d2e2; padding: 48px 0 28px; margin-top: 24px; }
.site-footer a { color: #cdddf3; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 28px; }
.site-footer h4 { color: #fff; font-size: .95rem; margin: 0 0 12px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 7px 0; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: #fff; margin-bottom: 10px; }
.footer-brand svg { width: 26px; height: 26px; }
.footer-legal { border-top: 1px solid #25324a; margin-top: 32px; padding-top: 18px; font-size: .82rem; color: #8fa0b8; }

/* Responsive */
@media (max-width: 860px) {
	.grid-3, .price-grid { grid-template-columns: 1fr; }
	.grid-2 { grid-template-columns: 1fr; }
	.footer-grid { grid-template-columns: 1fr; }
	.nav-links {
		position: absolute; top: 64px; left: 0; right: 0;
		flex-direction: column; align-items: stretch; gap: 0;
		background: #fff; border-bottom: 1px solid var(--line);
		padding: 8px 20px 16px; display: none;
	}
	.nav-links.open { display: flex; }
	.nav-links a { padding: 12px 0; border-bottom: 1px solid var(--line); }
	.nav-links .btn { margin-top: 10px; text-align: center; justify-content: center; }
	.nav-toggle { display: block; }
}