/* =========================================================
   Cancunlabs — Design System (tech oscuro + neón)
   ========================================================= */
:root {
	--bg:        #0a0e17;
	--bg-alt:    #0f1420;
	--surface:   #121a2b;
	--surface-2: #18223a;
	--line:      rgba(255,255,255,.08);
	--text:      #e8edf6;
	--muted:     #9aa7bd;
	--cyan:      #22d3ee;
	--violet:    #8b5cf6;
	--accent:    var(--cyan);
	--grad:      linear-gradient(100deg, #22d3ee 0%, #8b5cf6 100%);
	--radius:    16px;
	--radius-sm: 10px;
	--maxw:      1120px;
	--shadow:    0 20px 50px -20px rgba(0,0,0,.7);
	--glow:      0 0 40px -8px rgba(34,211,238,.45);
	--ff:        "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
	margin: 0;
	font-family: var(--ff);
	background: var(--bg);
	color: var(--text);
	line-height: 1.65;
	-webkit-font-smoothing: antialiased;
	overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
h1,h2,h3 { line-height: 1.15; margin: 0 0 .4em; font-weight: 700; letter-spacing: -.02em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.2rem; }
p  { margin: 0 0 1rem; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 20px; }
.container--narrow { max-width: 760px; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.eyebrow { text-transform: uppercase; letter-spacing: .18em; font-size: .78rem; font-weight: 600; color: var(--cyan); margin: 0 0 .6rem; }

.screen-reader-text { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--cyan); color: #001018; padding: 10px 16px; z-index: 1000; }
.skip-link:focus { left: 12px; top: 12px; }

/* -------- Buttons -------- */
.btn {
	display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
	padding: .8rem 1.4rem; border-radius: 999px; font-weight: 600; font-size: .95rem;
	border: 1px solid transparent; cursor: pointer; transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
	text-decoration: none; line-height: 1;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
.btn--primary { background: var(--grad); color: #05121a; box-shadow: var(--glow); }
.btn--ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--cyan); box-shadow: var(--glow); }
.btn--block { width: 100%; }
.btn--nav { padding: .55rem 1.1rem; background: var(--grad); color: #05121a; }

/* -------- Header / Nav -------- */
.site-header {
	position: sticky; top: 0; z-index: 100;
	background: rgba(10,14,23,.78); backdrop-filter: blur(12px);
	border-bottom: 1px solid var(--line);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: .55rem; color: var(--text); font-weight: 700; font-size: 1.15rem; }
.brand:hover { text-decoration: none; }
.brand__mark { color: var(--cyan); display: inline-flex; }
.brand__logo { height: 40px; width: auto; display: block; }
.brand__name strong { color: var(--cyan); font-weight: 800; }
.primary-nav ul { display: flex; align-items: center; gap: 1.4rem; list-style: none; margin: 0; padding: 0; }
.primary-nav a { color: var(--muted); font-weight: 500; font-size: .95rem; }
.primary-nav a:hover { color: var(--text); text-decoration: none; }
.primary-nav .btn--nav { color: #05121a; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--text); transition: .25s; }

/* -------- Hero -------- */
.hero { position: relative; padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(3rem, 7vw, 5rem); overflow: hidden; }
.hero__glow {
	position: absolute; inset: -30% 0 auto 0; height: 620px; z-index: 0;
	background: radial-gradient(600px 320px at 25% 20%, rgba(34,211,238,.22), transparent 60%),
	            radial-gradient(560px 320px at 80% 10%, rgba(139,92,246,.20), transparent 60%);
	filter: blur(4px);
}
.hero__inner { position: relative; z-index: 1; max-width: 860px; }
.hero__lead { font-size: clamp(1.05rem, 2vw, 1.3rem); color: var(--muted); max-width: 640px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .8rem; margin: 1.8rem 0 2.4rem; }
.hero__stats { display: flex; flex-wrap: wrap; gap: 2.2rem; list-style: none; margin: 0; padding: 1.4rem 0 0; border-top: 1px solid var(--line); }
.hero__stats strong { display: block; font-size: 1.5rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__stats span { color: var(--muted); font-size: .9rem; }

/* -------- Sections -------- */
.section { padding: clamp(3.5rem, 8vw, 6rem) 0; }
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
.section__head { max-width: 720px; margin: 0 auto clamp(2rem, 4vw, 3rem); text-align: center; }
.section__sub { color: var(--muted); font-size: 1.05rem; margin: 0; }

/* -------- Grids / Cards -------- */
.grid { display: grid; gap: 1.2rem; }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.card {
	background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
	padding: 1.6rem 1.4rem; transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-4px); border-color: rgba(34,211,238,.4); box-shadow: var(--shadow); }
.card__icon {
	width: 46px; height: 46px; display: grid; place-items: center; margin-bottom: 1rem;
	border-radius: 12px; background: rgba(34,211,238,.10); color: var(--cyan); font-size: 1.2rem; border: 1px solid rgba(34,211,238,.25);
}
.card h3 { margin-bottom: .4rem; }
.card p { color: var(--muted); margin: 0; font-size: .96rem; }

/* -------- Split (IA) -------- */
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 3rem; align-items: center; }
.checklist { list-style: none; padding: 0; margin: 1.2rem 0 1.8rem; display: grid; gap: .7rem; }
.checklist li { position: relative; padding-left: 1.9rem; color: var(--muted); }
.checklist li::before {
	content: "✓"; position: absolute; left: 0; top: 0; width: 1.3rem; height: 1.3rem;
	display: grid; place-items: center; border-radius: 50%; background: rgba(34,211,238,.15);
	color: var(--cyan); font-size: .75rem; font-weight: 700;
}
.split__visual { display: grid; place-items: center; }
.ai-orb { position: relative; width: 240px; height: 240px; display: grid; place-items: center; }
.ai-orb__core {
	width: 120px; height: 120px; border-radius: 50%; display: grid; place-items: center;
	font-weight: 800; font-size: 1.6rem; color: #05121a; background: var(--grad); box-shadow: var(--glow); z-index: 2;
}
.ai-orb span {
	position: absolute; inset: 0; border-radius: 50%; border: 1px solid rgba(34,211,238,.35);
	animation: spin 14s linear infinite;
}
.ai-orb span:nth-child(2) { inset: 26px; border-color: rgba(139,92,246,.35); animation-duration: 10s; animation-direction: reverse; }
.ai-orb span:nth-child(3) { inset: 52px; border-color: rgba(34,211,238,.25); animation-duration: 18s; }
@keyframes spin { to { transform: rotate(360deg); } }

/* -------- Steps -------- */
.steps { list-style: none; counter-reset: s; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4,1fr); gap: 1.2rem; }
.steps li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem 1.3rem; }
.steps__n { font-size: 1.4rem; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.steps h3 { margin: .5rem 0 .3rem; }
.steps p { color: var(--muted); margin: 0; font-size: .93rem; }

/* -------- Pricing -------- */
.pricing { align-items: stretch; }
.price-card {
	position: relative; display: flex; flex-direction: column; background: var(--surface);
	border: 1px solid var(--line); border-radius: var(--radius); padding: 2rem 1.6rem;
}
.price-card--featured { border-color: rgba(34,211,238,.55); box-shadow: var(--glow); background: linear-gradient(180deg, var(--surface-2), var(--surface)); }
.price-card__badge {
	position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
	background: var(--grad); color: #05121a; font-weight: 700; font-size: .72rem;
	padding: .35rem .9rem; border-radius: 999px; letter-spacing: .04em; text-transform: uppercase;
}
.price-card__name { font-size: 1.05rem; color: var(--muted); text-transform: uppercase; letter-spacing: .1em; margin-bottom: .6rem; }
.price-card__price { font-size: 2.6rem; font-weight: 800; margin: 0; letter-spacing: -.02em; }
.price-card__price .cur { font-size: 1.4rem; vertical-align: super; color: var(--muted); }
.price-card__price .per { font-size: 1rem; font-weight: 500; color: var(--muted); }
.price-card__price--quote { font-size: 1.8rem; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.price-card__tag { color: var(--cyan); font-size: .9rem; margin: .2rem 0 1.2rem; }
.price-card__list { list-style: none; padding: 0; margin: 0 0 1.6rem; display: grid; gap: .6rem; flex: 1; }
.price-card__list li { position: relative; padding-left: 1.6rem; color: var(--muted); font-size: .95rem; }
.price-card__list li::before { content: "✓"; position: absolute; left: 0; color: var(--cyan); font-weight: 700; }

/* -------- FAQ -------- */
.faq { display: grid; gap: .8rem; }
.faq details {
	background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 0 1.3rem;
}
.faq summary {
	cursor: pointer; list-style: none; padding: 1.1rem 0; font-weight: 600; display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--cyan); font-size: 1.4rem; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { color: var(--muted); margin: 0 0 1.1rem; }

/* -------- Contact form -------- */
.section--contact { background: var(--bg-alt); border-top: 1px solid var(--line); }
.contact-form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.4rem, 3vw, 2.2rem); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field { margin: 0 0 1.1rem; display: flex; flex-direction: column; gap: .4rem; }
.field label { font-size: .9rem; font-weight: 600; color: var(--text); }
.field input, .field select, .field textarea {
	width: 100%; background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius-sm);
	padding: .8rem .9rem; color: var(--text); font: inherit; font-size: .95rem; transition: border-color .15s, box-shadow .15s;
}
.field input:focus, .field select:focus, .field textarea:focus {
	outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(34,211,238,.15);
}
.field textarea { resize: vertical; }
.field--submit { margin-top: .4rem; }
.form-note { font-size: .82rem; color: var(--muted); margin: .9rem 0 0; text-align: center; }
.hp { position: absolute; left: -9999px; height: 0; overflow: hidden; }
.form-alert { padding: 1rem 1.2rem; border-radius: var(--radius-sm); margin-bottom: 1.4rem; font-weight: 500; }
.form-alert--ok { background: rgba(34,211,238,.12); border: 1px solid rgba(34,211,238,.4); color: #b6f4ff; }
.form-alert--error { background: rgba(248,113,113,.12); border: 1px solid rgba(248,113,113,.4); color: #ffc9c9; }

/* -------- Footer -------- */
.site-footer { background: var(--bg); border-top: 1px solid var(--line); padding: 3.2rem 0 1.6rem; }
.site-footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 2rem; }
.site-footer__brand p { color: var(--muted); font-size: .93rem; margin-top: .6rem; max-width: 40ch; }
.site-footer h3 { font-size: .82rem; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.site-footer a { color: var(--text); font-size: .93rem; }
.site-footer a:hover { color: var(--cyan); text-decoration: none; }
.site-footer__legal { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-top: 2.4rem; padding-top: 1.4rem; border-top: 1px solid var(--line); }
.site-footer__legal p { color: var(--muted); font-size: .82rem; margin: 0; }
.site-footer__legal span { color: var(--cyan); }

/* -------- Floating WhatsApp -------- */
.fab-whatsapp {
	position: fixed; right: 20px; bottom: 20px; z-index: 90; width: 56px; height: 56px;
	display: grid; place-items: center; border-radius: 50%; background: #25d366; color: #fff;
	box-shadow: 0 10px 30px -6px rgba(37,211,102,.6); transition: transform .18s ease;
}
.fab-whatsapp:hover { transform: scale(1.08); text-decoration: none; }

/* -------- Reveal animation -------- */
[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
[data-reveal].is-visible { opacity: 1; transform: none; }

/* -------- Responsive -------- */
@media (max-width: 960px) {
	.grid--4 { grid-template-columns: repeat(2, 1fr); }
	.steps { grid-template-columns: repeat(2, 1fr); }
	.split { grid-template-columns: 1fr; gap: 2rem; }
	.split__visual { order: -1; }
	.site-footer__grid { grid-template-columns: 1fr 1fr; }
	.site-footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 720px) {
	.nav-toggle { display: flex; }
	.primary-nav {
		position: fixed; inset: 68px 0 auto 0; background: var(--bg-alt); border-bottom: 1px solid var(--line);
		transform: translateY(-120%); transition: transform .3s ease; padding: 1rem 0;
	}
	.primary-nav.is-open { transform: translateY(0); }
	.primary-nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: 0 20px; }
	.primary-nav li { border-bottom: 1px solid var(--line); }
	.primary-nav a { display: block; padding: .9rem 0; }
	.primary-nav .btn--nav { margin: .8rem 0; text-align: center; }
	.grid--3, .pricing { grid-template-columns: 1fr; }
	.price-card--featured { order: -1; }
	.field-row { grid-template-columns: 1fr; gap: 0; }
	.hero__stats { gap: 1.4rem; }
}
@media (max-width: 480px) {
	.grid--4, .steps { grid-template-columns: 1fr; }
	.site-footer__grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
	*, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
	[data-reveal] { opacity: 1; transform: none; }
}