/* =============================================================
   Visiblia · styles.css
   1. Tokens · 2. Reset · 3. Utilidades · 4. Tipografía
   5. Componentes · 6. Secciones · 7. Efectos · 8. Responsive · 9. Movimiento reducido
   ============================================================= */

/* 1. Tokens ---------------------------------------------------- */
:root {
  --noche: #0A0F1F;
  --noche-2: #10172B;
  --noche-3: #18213B;
  --linea: rgba(148, 163, 184, .16);
  --hielo: #F4F7FB;
  --texto: #CBD5E1;
  --niebla: #94A3B8;
  --cian: #22D3EE;
  --violeta: #8B5CF6;
  --grad: linear-gradient(120deg, #8B5CF6 0%, #22D3EE 100%);
  --display: "Space Grotesk", system-ui, sans-serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --wrap: 1180px;
  --gutter: clamp(1rem, 4vw, 2rem);
  --radius: 18px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --header-h: 68px;
}

/* 2. Reset ----------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; overflow-x: clip; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  font-family: var(--sans); font-size: 16px; line-height: 1.65;
  background: var(--noche); color: var(--texto);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
ul, ol { padding: 0; list-style: none; }
::selection { background: var(--cian); color: var(--noche); }
:focus-visible { outline: 2px solid var(--cian); outline-offset: 3px; border-radius: 6px; }

/* 3. Utilidades ------------------------------------------------ */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: fixed; top: -100px; left: 1rem; z-index: 999; padding: .6rem 1rem; background: var(--hielo); color: var(--noche); border-radius: 10px; font-weight: 600; }
.skip-link:focus { top: 1rem; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* 4. Tipografía ------------------------------------------------ */
h1, h2, h3 { font-family: var(--display); color: var(--hielo); font-weight: 700; letter-spacing: -0.025em; line-height: 1.06; text-wrap: balance; }
h1 { font-size: clamp(2.4rem, 6.4vw, 4.6rem); }
h2 { font-size: clamp(1.9rem, 4.2vw, 3rem); }
h3 { font-size: 1.25rem; letter-spacing: -0.01em; line-height: 1.2; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--texto); max-width: 60ch; }
.kicker, .eyebrow {
  display: inline-flex; align-items: center; gap: .6rem;
  font-family: var(--display); font-weight: 500; font-size: .85rem; letter-spacing: .08em; text-transform: uppercase; color: var(--cian);
}

/* La firma: tres puntos que suben */
.signal { display: inline-flex; align-items: flex-end; gap: .22em; height: 1em; }
.signal i { display: block; border-radius: 50%; background: var(--grad); }
.signal i:nth-child(1) { width: .32em; height: .32em; opacity: .6; }
.signal i:nth-child(2) { width: .45em; height: .45em; opacity: .85; transform: translateY(-.18em); }
.signal i:nth-child(3) { width: .62em; height: .62em; transform: translateY(-.42em); box-shadow: 0 0 .7em rgba(34, 211, 238, .6); }

/* 5. Componentes ----------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 50px; padding: .8rem 1.4rem; border-radius: 14px;
  font-weight: 600; font-size: 1rem; line-height: 1.2; text-align: center;
  transition: transform .35s var(--ease-out), box-shadow .35s var(--ease-out), background-color .35s var(--ease-out), border-color .35s var(--ease-out);
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 8px 30px -10px rgba(34, 211, 238, .55); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px -12px rgba(34, 211, 238, .75); }
.btn-ghost { border: 1px solid rgba(244, 247, 251, .22); color: var(--hielo); background: rgba(244, 247, 251, .03); }
.btn-ghost:hover { border-color: var(--cian); background: rgba(34, 211, 238, .08); transform: translateY(-2px); }
.btn-sm { min-height: 42px; padding: .55rem 1rem; font-size: .92rem; border-radius: 12px; }
.btn-block { width: 100%; }
.btn-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.btn-row.center { justify-content: center; }

/* Cabecera */
.site-header { position: sticky; top: 0; z-index: 50; height: var(--header-h); background: rgba(10, 15, 31, .92); border-bottom: 1px solid transparent; transition: border-color .3s, background-color .3s; }
@supports (backdrop-filter: blur(12px)) { .site-header { background: rgba(10, 15, 31, .7); backdrop-filter: blur(14px) saturate(160%); -webkit-backdrop-filter: blur(14px) saturate(160%); } }
.site-header.is-scrolled { border-bottom-color: var(--linea); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand img { width: 128px; height: auto; }
.nav-toggle { width: 44px; height: 44px; display: grid; place-content: center; gap: 6px; border-radius: 12px; border: 1px solid var(--linea); }
.nav-toggle span:not(.sr-only) { display: block; width: 20px; height: 2px; background: var(--hielo); border-radius: 2px; transition: transform .3s var(--ease-out); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }
.nav-links {
  position: fixed; inset: var(--header-h) 0 auto 0; display: flex; flex-direction: column; gap: .2rem;
  padding: 1rem var(--gutter) 1.6rem; background: var(--noche); border-bottom: 1px solid var(--linea);
  opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity .3s var(--ease-out), transform .3s var(--ease-out), visibility .3s;
}
.nav-links.is-open { opacity: 1; visibility: visible; transform: none; }
.nav-links a:not(.btn) { padding: .8rem .2rem; color: var(--hielo); font-weight: 500; border-bottom: 1px solid var(--linea); }
.nav-links a[aria-current="page"] { color: var(--cian); }
.nav-links .btn { margin-top: 1rem; }

/* Chat de IA */
.chat {
  position: relative; border-radius: 22px; padding: 1.2rem; border: 1px solid rgba(244, 247, 251, .12);
  background: rgba(16, 23, 43, .92); box-shadow: 0 30px 80px -30px rgba(0, 0, 0, .8), 0 0 0 1px rgba(34, 211, 238, .05) inset;
}
@supports (backdrop-filter: blur(16px)) { .chat { background: rgba(16, 23, 43, .62); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); } }
.chat-top { display: flex; align-items: center; gap: .4rem; padding-bottom: .9rem; margin-bottom: 1rem; border-bottom: 1px solid var(--linea); }
.chat-top span { width: 9px; height: 9px; border-radius: 50%; background: var(--noche-3); }
.chat-top em { margin-left: auto; font-style: normal; font-size: .8rem; color: var(--niebla); }
.msg { padding: .85rem 1rem; border-radius: 16px; font-size: .97rem; line-height: 1.55; max-width: 92%; }
.msg-user { margin-left: auto; background: var(--noche-3); color: var(--hielo); border-bottom-right-radius: 6px; }
.msg-ai { margin-top: .8rem; background: rgba(139, 92, 246, .12); border: 1px solid rgba(139, 92, 246, .28); color: var(--hielo); border-bottom-left-radius: 6px; }
.msg mark { background: var(--grad); color: var(--noche); font-weight: 700; padding: .05em .4em; border-radius: 6px; }
.chat figcaption { margin-top: 1rem; font-size: .82rem; color: var(--niebla); }
.typing-caret::after { content: ""; display: inline-block; width: 2px; height: 1em; margin-left: 2px; vertical-align: -2px; background: var(--cian); animation: blink 1s steps(1) infinite; }

/* Formularios */
.form { background: var(--noche-2); border: 1px solid var(--linea); border-radius: var(--radius); padding: clamp(1.2rem, 3vw, 2rem); display: grid; gap: 1rem; }
.field { display: grid; gap: .4rem; }
.field label { font-weight: 500; color: var(--hielo); font-size: .95rem; }
.field label span { color: var(--niebla); font-weight: 400; }
.field input { min-height: 50px; padding: .75rem 1rem; border-radius: 12px; border: 1px solid rgba(148, 163, 184, .28); background: var(--noche); color: var(--hielo); transition: border-color .25s, box-shadow .25s; }
.field input::placeholder { color: #64748B; }
.field input:focus { outline: none; border-color: var(--cian); box-shadow: 0 0 0 3px rgba(34, 211, 238, .18); }
.field.is-invalid input { border-color: #F87171; }
.form-note { font-size: .85rem; color: var(--niebla); text-align: center; }
.form-note a { color: var(--cian); text-decoration: underline; }

/* 6. Secciones ------------------------------------------------- */
.hero { position: relative; isolation: isolate; overflow: clip; padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(3.5rem, 8vw, 6rem); }
.hero-gradient {
  position: absolute; inset: -20% -10% 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(520px circle at var(--mx, 70%) var(--my, 35%), rgba(34, 211, 238, .30), transparent 60%),
    radial-gradient(640px circle at calc(100% - var(--mx, 70%)) calc(var(--my, 35%) + 20%), rgba(139, 92, 246, .32), transparent 62%);
  filter: blur(30px);
  transition: background-position .4s;
}
.hero-grid {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image: linear-gradient(rgba(148, 163, 184, .07) 1px, transparent 1px), linear-gradient(90deg, rgba(148, 163, 184, .07) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 75%); mask-image: radial-gradient(ellipse at 50% 30%, #000 30%, transparent 75%);
}
.hero-inner { display: grid; gap: 3rem; align-items: center; }
.hero h1 { margin: 1.2rem 0 1.3rem; max-width: 15ch; }
.hero-sub h1 { max-width: 20ch; font-size: clamp(2.2rem, 5.4vw, 4rem); }
.hero .lead { margin-bottom: .2rem; }
.crumbs { display: flex; gap: .5rem; font-size: .88rem; color: var(--niebla); margin-bottom: 1.4rem; }
.crumbs a:hover { color: var(--cian); }

.strip { border-block: 1px solid var(--linea); background: rgba(16, 23, 43, .5); }
.strip-inner { display: flex; flex-wrap: wrap; align-items: center; gap: .8rem 2rem; padding-block: 1.3rem; }
.strip-label { font-size: .85rem; color: var(--niebla); }
.strip ul { display: flex; flex-wrap: wrap; gap: .6rem 1.8rem; }
.strip li { font-family: var(--display); font-weight: 700; font-size: 1.1rem; color: var(--hielo); opacity: .8; }

.section { padding: clamp(4rem, 9vw, 7rem) 0; }
.section + .section { border-top: 1px solid var(--linea); }
.section-head { max-width: 760px; margin-bottom: clamp(2rem, 5vw, 3.2rem); }
.section-head h2 { margin: .8rem 0 1rem; }
.section-head p:not(.kicker) { font-size: 1.08rem; }

.stats { display: grid; gap: 1rem; grid-template-columns: repeat(2, 1fr); }
.stat { padding: 1.4rem; border-radius: var(--radius); background: var(--noche-2); border: 1px solid var(--linea); }
.stat-n { display: block; font-family: var(--display); font-weight: 700; font-size: clamp(2.8rem, 7vw, 4.2rem); line-height: 1; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-t { display: block; margin-top: .6rem; color: var(--texto); font-size: .98rem; }
.stat-n::after { content: " de 20"; font-size: .32em; font-weight: 500; -webkit-text-fill-color: var(--niebla); color: var(--niebla); letter-spacing: 0; }

.svc-list { border-top: 1px solid var(--linea); }
.svc-row { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 1rem 1.4rem; padding: 1.6rem .2rem; border-bottom: 1px solid var(--linea); transition: background-color .35s var(--ease-out), padding .35s var(--ease-out); }
.svc-row:hover { background: linear-gradient(90deg, rgba(34, 211, 238, .06), transparent 70%); padding-left: 1rem; }
.svc-num { font-family: var(--display); font-weight: 500; color: var(--niebla); font-size: .95rem; }
.svc-body { display: grid; gap: .3rem; }
.svc-name { font-family: var(--display); font-weight: 700; color: var(--hielo); font-size: clamp(1.5rem, 3.6vw, 2.4rem); letter-spacing: -0.025em; line-height: 1.1; transition: color .3s; }
.svc-row:hover .svc-name { color: var(--cian); }
.svc-desc { color: var(--texto); max-width: 60ch; }
.svc-arrow { font-size: 1.6rem; color: var(--cian); transition: transform .35s var(--ease-out); }
.svc-row:hover .svc-arrow { transform: translateX(6px); }
.svc-list .svc-row:not(:has(.svc-num)) { grid-template-columns: 1fr auto; }

.compare { display: grid; gap: 1rem; }
.compare-card { padding: 1.6rem; border-radius: var(--radius); background: var(--noche-2); border: 1px solid var(--linea); }
.compare-card h3 { margin-bottom: 1rem; }
.compare-card li { position: relative; padding: .55rem 0 .55rem 1.6rem; border-top: 1px solid var(--linea); }
.compare-card li::before { content: ""; position: absolute; left: 0; top: 1.05rem; width: 8px; height: 8px; border-radius: 50%; background: var(--niebla); }
.compare-ai { border-color: rgba(34, 211, 238, .35); background: linear-gradient(160deg, rgba(139, 92, 246, .14), rgba(34, 211, 238, .06) 60%), var(--noche-2); }
.compare-ai li::before { background: var(--grad); box-shadow: 0 0 10px rgba(34, 211, 238, .6); }

.steps { display: grid; gap: 1rem; counter-reset: s; }
.step { position: relative; padding: 1.6rem; border-radius: var(--radius); background: var(--noche-2); border: 1px solid var(--linea); }
.step-n { display: grid; place-items: center; width: 40px; height: 40px; margin-bottom: 1rem; border-radius: 12px; background: var(--grad); color: var(--noche); font-family: var(--display); font-weight: 700; }
.step h3 { margin-bottom: .5rem; }

.plans { display: grid; gap: 1rem; align-items: stretch; }
.plan { position: relative; display: flex; flex-direction: column; padding: 1.8rem; border-radius: 22px; background: var(--noche-2); border: 1px solid var(--linea); }
.plan h3 { font-size: 1.6rem; }
.plan-for { margin: .5rem 0 1.2rem; color: var(--niebla); }
.plan ul { flex: 1; margin-bottom: 1.6rem; }
.plan li { position: relative; padding: .5rem 0 .5rem 1.7rem; border-top: 1px solid var(--linea); }
.plan li::before { content: ""; position: absolute; left: 0; top: .95rem; width: 14px; height: 8px; border-left: 2px solid var(--cian); border-bottom: 2px solid var(--cian); transform: rotate(-45deg); }
.plan-featured { border-color: transparent; background: linear-gradient(var(--noche-2), var(--noche-2)) padding-box, var(--grad) border-box; border: 1.5px solid transparent; box-shadow: 0 30px 80px -40px rgba(34, 211, 238, .5); }
.plan-badge { position: absolute; top: -13px; left: 1.8rem; padding: .25rem .8rem; border-radius: 99px; background: var(--grad); color: #fff; font-size: .78rem; font-weight: 600; }

.diag { display: grid; gap: 2.4rem; align-items: start; }
.diag-copy h2 { margin: .8rem 0 1rem; }
.checks { margin-top: 1.4rem; display: grid; gap: .6rem; }
.checks li { position: relative; padding-left: 1.8rem; color: var(--hielo); }
.checks li::before { content: ""; position: absolute; left: 0; top: .5rem; width: 14px; height: 8px; border-left: 2px solid var(--cian); border-bottom: 2px solid var(--cian); transform: rotate(-45deg); }

.faq { border-top: 1px solid var(--linea); max-width: 860px; }
.faq-item { border-bottom: 1px solid var(--linea); }
.faq-item summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.3rem .2rem; cursor: pointer; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary h3 { font-size: clamp(1.05rem, 2vw, 1.25rem); font-weight: 500; }
.faq-icon { flex: none; position: relative; width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--linea); }
.faq-icon::before, .faq-icon::after { content: ""; position: absolute; left: 50%; top: 50%; width: 12px; height: 2px; background: var(--cian); transform: translate(-50%, -50%); transition: transform .3s var(--ease-out); }
.faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-item[open] .faq-icon::after { transform: translate(-50%, -50%) rotate(0deg); }
.faq-a { padding: 0 .2rem 1.4rem; max-width: 70ch; }

.inc-grid { display: grid; gap: 1rem; }
.inc { padding: 1.5rem; border-radius: var(--radius); background: var(--noche-2); border: 1px solid var(--linea); transition: border-color .3s, transform .35s var(--ease-out); }
.inc:hover { border-color: rgba(34, 211, 238, .4); transform: translateY(-3px); }
.inc h3 { margin-bottom: .5rem; }
.tags { display: flex; flex-wrap: wrap; gap: .6rem; }
.tags li { padding: .55rem 1rem; border-radius: 99px; border: 1px solid var(--linea); color: var(--hielo); background: rgba(16, 23, 43, .6); }

.cta-final { position: relative; isolation: isolate; text-align: center; padding: clamp(4.5rem, 10vw, 8rem) 0; border-top: 1px solid var(--linea); }
.cta-final::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(600px circle at 50% 60%, rgba(139, 92, 246, .22), transparent 65%), radial-gradient(500px circle at 40% 40%, rgba(34, 211, 238, .14), transparent 65%); }
.cta-final .signal { font-size: 2.4rem; margin-bottom: 1rem; }
.cta-final h2 { max-width: 18ch; margin-inline: auto; }
.cta-final p { max-width: 54ch; margin: 1rem auto 0; font-size: 1.08rem; }

.site-footer { border-top: 1px solid var(--linea); padding-top: 3.5rem; background: #070B17; }
.footer-grid { display: grid; gap: 2rem; padding-bottom: 2.5rem; }
.footer-grid img { width: 150px; }
.footer-claim { margin-top: 1rem; max-width: 34ch; color: var(--niebla); }
.footer-h { font-size: .85rem; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--niebla); margin-bottom: .8rem; }
.footer-grid li { padding: .25rem 0; }
.footer-grid a:hover { color: var(--cian); }
.footer-base { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem; padding-block: 1.4rem; border-top: 1px solid var(--linea); font-size: .85rem; color: var(--niebla); }

.wa-float { position: fixed; right: 18px; bottom: 18px; z-index: 60; width: 58px; height: 58px; display: grid; place-items: center; border-radius: 50%; background: #25D366; color: #fff; box-shadow: 0 12px 30px -8px rgba(37, 211, 102, .6); transition: transform .35s var(--ease-out); }
.wa-float svg { width: 30px; height: 30px; }
.wa-float:hover { transform: scale(1.08); }

/* 7. Efectos --------------------------------------------------- */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease-out), transform .9s var(--ease-out); }
.js .reveal.is-visible { opacity: 1; transform: none; }
@keyframes blink { 50% { opacity: 0; } }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 .5em rgba(34, 211, 238, .45); } 50% { box-shadow: 0 0 1.1em rgba(34, 211, 238, .85); } }
.eyebrow .signal i:nth-child(3), .cta-final .signal i:nth-child(3) { animation: pulse 2.6s ease-in-out infinite; }

/* 8. Responsive ------------------------------------------------ */
@media (min-width: 540px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 720px) {
  .compare { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .inc-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
}
@media (min-width: 960px) {
  :root { --header-h: 76px; }
  .nav-toggle { display: none; }
  .nav-links { position: static; flex-direction: row; align-items: center; gap: 1.6rem; padding: 0; background: none; border: 0; opacity: 1; visibility: visible; transform: none; }
  .nav-links a:not(.btn) { padding: 0; border: 0; font-size: .95rem; color: var(--texto); transition: color .25s; }
  .nav-links a:not(.btn):hover { color: var(--hielo); }
  .nav-links .btn { margin-top: 0; }
  .brand img { width: 140px; }
  .hero-inner { grid-template-columns: 1.15fr .85fr; gap: 3.5rem; }
  .stats { grid-template-columns: repeat(4, 1fr); }
  .steps { grid-template-columns: repeat(4, 1fr); }
  .plans { grid-template-columns: repeat(3, 1fr); }
  .diag { grid-template-columns: 1fr 1fr; gap: 4rem; }
  .inc-grid { grid-template-columns: repeat(3, 1fr); }
}

/* 9. Movimiento reducido: solo lo intrusivo -------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .eyebrow .signal i:nth-child(3), .cta-final .signal i:nth-child(3) { animation: none; }
  .typing-caret::after { animation: none; }
}