/* Chatzim — landing. Tokens derivados del producto: violeta = ventana 72h, verde = ventana 24h. */
:root {
  --ink: #15131f;
  --ink-soft: #2a2638;
  --paper: #ffffff;
  --mist: #f5f3fc;
  --line: #e7e4f0;
  --muted: #5e5a6e;
  --violet: #6d28d9;
  --violet-soft: #ede7fb;
  --green: #1f9d55;
  --green-soft: #e3f5ea;
  --amber: #b45309;

  --font-display: "Bricolage Grotesque", "Segoe UI", sans-serif;
  --font-body: "Instrument Sans", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  --radius: 14px;
  --radius-lg: 22px;
  --wrap: 1120px;
  --shadow: 0 1px 2px rgba(21, 19, 31, 0.04), 0 12px 32px rgba(21, 19, 31, 0.08);
}

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

[hidden] { display: none !important; }

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; }
p { margin: 0; }

:focus-visible { outline: 3px solid var(--violet); outline-offset: 3px; border-radius: 6px; }

.wrap { width: min(100% - 40px, var(--wrap)); margin-inline: auto; }

.skip {
  position: absolute; left: 12px; top: -48px; z-index: 100;
  background: var(--ink); color: #fff; padding: 10px 14px; border-radius: 8px; text-decoration: none;
}
.skip:focus { top: 12px; }

/* ---------- Tipografía ---------- */
.display {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.02;
  font-variation-settings: "wdth" 88;
  margin: 0;
}
.h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 4vw, 46px);
  letter-spacing: -0.03em;
  line-height: 1.08;
  font-variation-settings: "wdth" 90;
  margin: 0 0 16px;
}
.lead { font-size: clamp(17px, 1.6vw, 20px); color: var(--muted); max-width: 58ch; }
.label {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font: 600 16px/1 var(--font-body);
  padding: 15px 22px; border-radius: 999px; text-decoration: none;
  border: 1.5px solid transparent; cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--ink-soft); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--paper); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-wa { background: var(--green); color: #fff; }
.btn-wa:hover { background: #188547; }
.btn svg { width: 18px; height: 18px; }

/* ---------- Encabezado ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}
.site-header.is-scrolled { border-bottom-color: var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 700 21px/1 var(--font-display); letter-spacing: -0.03em; }
.brand svg { width: 30px; height: 30px; }
.nav-links { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; }
.nav-links a { text-decoration: none; color: var(--muted); font-weight: 500; font-size: 15.5px; }
.nav-links a:hover { color: var(--ink); }
.nav-cta { display: flex; align-items: center; gap: 10px; }
.nav-cta .btn { padding: 11px 18px; font-size: 15px; }
.nav-login { text-decoration: none; font-weight: 600; font-size: 15px; padding: 10px 6px; }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle svg { width: 26px; height: 26px; }

/* ---------- Hero ---------- */
.hero { padding: 56px 0 88px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(42px, 6.4vw, 78px); margin-bottom: 22px; }
.hero h1 .accent { color: var(--violet); }
.hero .lead { margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.trust { display: flex; flex-wrap: wrap; gap: 8px 18px; list-style: none; padding: 0; margin: 0; }
.trust li { display: inline-flex; align-items: center; gap: 8px; font-size: 14.5px; color: var(--muted); }
.trust li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--green); }

/* ---------- Demo de chat (firma) ---------- */
.demo {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.demo-head {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px; border-bottom: 1px solid var(--line);
}
.avatar {
  width: 38px; height: 38px; border-radius: 50%; flex-shrink: 0;
  display: grid; place-items: center;
  background: #fde7d6; color: #9a4a12; font: 700 15px/1 var(--font-body);
}
.demo-who { flex: 1; min-width: 0; }
.demo-who strong { display: block; font-size: 15px; line-height: 1.2; }
.demo-who .label { font-size: 11.5px; }
.pill {
  display: inline-flex; align-items: center; gap: 6px; white-space: nowrap;
  font: 600 11.5px/1 var(--font-mono); letter-spacing: 0.02em;
  padding: 6px 10px; border-radius: 999px; border: 1px solid currentColor;
}
.pill-72 { color: var(--violet); background: var(--violet-soft); }
.pill-24 { color: var(--green); background: var(--green-soft); }
.pill-dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.demo-body {
  height: 400px; padding: 18px 16px 12px;
  display: flex; flex-direction: column; gap: 10px; justify-content: flex-end;
  overflow: hidden;
  background:
    radial-gradient(circle at 1px 1px, rgba(109, 40, 217, 0.06) 1px, transparent 0) 0 0 / 18px 18px,
    var(--mist);
}
.msg {
  max-width: 84%; padding: 9px 12px 7px; border-radius: 14px;
  font-size: 14.5px; line-height: 1.45; box-shadow: 0 1px 1px rgba(21, 19, 31, 0.05);
}
.msg time { display: block; text-align: right; font: 500 10.5px/1.6 var(--font-mono); color: var(--muted); }
.msg-in { align-self: flex-start; background: var(--paper); border-top-left-radius: 4px; }
.msg-out { align-self: flex-end; background: #dcf8e6; border-top-right-radius: 4px; }
.msg-out .who { display: block; font: 600 10.5px/1.4 var(--font-mono); color: var(--violet); margin-bottom: 2px; }
.msg-buttons { align-self: flex-end; display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; max-width: 84%; }
.msg-buttons span {
  font-size: 13.5px; font-weight: 600; color: #0b7a3e;
  background: var(--paper); border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px;
}
.msg-event {
  align-self: center; display: inline-flex; align-items: center; gap: 8px;
  font: 500 12px/1 var(--font-mono); color: var(--ink);
  background: var(--paper); border: 1px dashed var(--violet); border-radius: 999px; padding: 8px 12px;
}
.msg-event svg { width: 14px; height: 14px; color: var(--violet); }
.typing { align-self: flex-start; display: inline-flex; gap: 4px; background: var(--paper); padding: 12px 14px; border-radius: 14px; border-top-left-radius: 4px; }
.typing.out { align-self: flex-end; background: #dcf8e6; border-radius: 14px; border-top-right-radius: 4px; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); opacity: 0.5; animation: blink 1.1s infinite; }
.typing i:nth-child(2) { animation-delay: 0.15s; }
.typing i:nth-child(3) { animation-delay: 0.3s; }
@keyframes blink { 0%, 80%, 100% { opacity: 0.25; transform: translateY(0); } 40% { opacity: 0.8; transform: translateY(-2px); } }

.demo [data-step] { display: none; }
.demo [data-step].is-shown { display: flex; animation: rise 0.32s ease both; }
.demo .msg[data-step].is-shown { display: block; }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.demo-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px; border-top: 1px solid var(--line);
}
.kanban { display: flex; align-items: center; gap: 6px; font: 500 11.5px/1 var(--font-mono); color: var(--muted); }
.kanban span { padding: 6px 8px; border-radius: 6px; border: 1px solid var(--line); transition: all 0.3s ease; }
.kanban span.is-active { color: #fff; background: var(--ink); border-color: var(--ink); }
.kanban svg { width: 10px; height: 10px; color: var(--line); }
.replay { background: none; border: 0; font: 500 12px/1 var(--font-mono); color: var(--muted); cursor: pointer; padding: 6px; }
.replay:hover { color: var(--ink); }

/* ---------- Secciones ---------- */
.section { padding: 104px 0; }
.section-mist { background: var(--mist); }
.section-head { max-width: 720px; margin-bottom: 56px; }
.eyebrow { display: inline-block; font: 600 13px/1 var(--font-mono); color: var(--violet); margin-bottom: 16px; letter-spacing: 0.02em; }

/* Problema: chats sin responder */
.missed { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.missed-item { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.missed-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.missed-badge { font: 600 12px/1 var(--font-mono); color: #b42318; background: #fde8e6; padding: 6px 9px; border-radius: 999px; }
.missed-item h3 { font: 700 20px/1.25 var(--font-display); letter-spacing: -0.02em; margin: 0 0 8px; }
.missed-item p { color: var(--muted); font-size: 15.5px; }

/* Pasos */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; counter-reset: step; border-top: 1px solid var(--line); }
.step { padding: 28px 28px 0 0; position: relative; }
.step + .step { padding-left: 28px; border-left: 1px solid var(--line); }
.step::before {
  counter-increment: step; content: "Paso " counter(step);
  display: block; font: 600 13px/1 var(--font-mono); color: var(--violet); margin-bottom: 18px;
}
.step h3 { font: 700 24px/1.2 var(--font-display); letter-spacing: -0.025em; margin: 0 0 10px; }
.step p { color: var(--muted); }

/* Funciones */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feature { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.feature-icon { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: var(--violet-soft); color: var(--violet); margin-bottom: 18px; }
.feature-icon svg { width: 22px; height: 22px; }
.feature h3 { font: 700 19px/1.25 var(--font-display); letter-spacing: -0.02em; margin: 0 0 8px; }
.feature p { color: var(--muted); font-size: 15.5px; }

/* Anuncios: línea de tiempo de ventanas */
.ads { background: var(--ink); color: #f3f1fa; }
.ads .h2 { color: #fff; }
.ads .lead { color: #b9b4cc; }
.ads .eyebrow { color: #c4b5fd; }
.timeline { margin: 8px 0 56px; }
.timeline-track { position: relative; display: grid; grid-template-columns: 1fr 1fr 3fr; height: 14px; border-radius: 999px; overflow: hidden; background: #2a2638; }
.timeline-track span:nth-child(1) { background: #3d3850; }
.timeline-track span:nth-child(2) { background: var(--green); }
.timeline-track span:nth-child(3) { background: var(--violet); }
.timeline-labels { display: grid; grid-template-columns: 1fr 1fr 3fr; margin-top: 14px; gap: 12px; }
.timeline-labels div { font-size: 14.5px; color: #d6d2e4; }
.timeline-labels strong { display: block; font: 600 12.5px/1.5 var(--font-mono); color: #fff; }
.ads-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.ads-card { border: 1px solid #34304a; border-radius: var(--radius); padding: 26px; background: #1c1a29; }
.ads-card h3 { font: 700 20px/1.25 var(--font-display); letter-spacing: -0.02em; margin: 0 0 10px; color: #fff; }
.ads-card p { color: #b9b4cc; font-size: 15.5px; }
.cost-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid #34304a; font-size: 14.5px; }
.cost-row:last-child { border-bottom: 0; }
.cost-row .label { color: #b9b4cc; }
.cost-old { font-family: var(--font-mono); color: #8a8499; text-decoration: line-through; margin-right: 8px; }
.cost-free { font: 600 13px/1 var(--font-mono); color: #c4b5fd; }
.cost-paid { font: 600 13px/1 var(--font-mono); color: #fff; }

/* API oficial */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.checks { list-style: none; padding: 0; margin: 24px 0 0; display: grid; gap: 12px; }
.checks li { display: flex; gap: 12px; color: var(--ink); }
.checks svg { width: 20px; height: 20px; color: var(--green); flex-shrink: 0; margin-top: 3px; }
.devices { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.device { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.device .label { display: block; margin-bottom: 12px; }
.device-line { height: 9px; border-radius: 999px; background: var(--mist); margin-bottom: 9px; }
.device-line.short { width: 60%; }
.device-line.green { background: var(--green-soft); width: 75%; margin-left: auto; }
.sync { grid-column: 1 / -1; text-align: center; font: 600 12.5px/1 var(--font-mono); color: var(--green); padding: 10px; border: 1px dashed var(--green); border-radius: 999px; background: var(--green-soft); }

/* Para quién */
.sectors { display: flex; flex-wrap: wrap; gap: 10px; }
.sectors span { font-size: 15.5px; font-weight: 500; padding: 10px 16px; border: 1px solid var(--line); border-radius: 999px; background: var(--paper); }

/* Testimonios */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 40px; }
.stat { border-top: 2px solid var(--ink); padding-top: 16px; }
.stat strong { display: block; font: 700 40px/1 var(--font-display); letter-spacing: -0.03em; margin-bottom: 8px; }
.stat span { color: var(--muted); font-size: 15px; }
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.quote { margin: 0; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: flex; flex-direction: column; gap: 20px; }
.quote blockquote { margin: 0; font-size: 16.5px; line-height: 1.55; }
.quote figcaption { display: flex; align-items: center; gap: 12px; margin-top: auto; }
.quote figcaption strong { display: block; font-size: 15px; line-height: 1.3; }
.quote figcaption span { font-size: 13.5px; color: var(--muted); }
.quote .avatar { width: 40px; height: 40px; }

/* Precios */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; align-items: stretch; }
.plan { position: relative; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 30px 28px; display: flex; flex-direction: column; }
.plan-featured { border: 2px solid var(--violet); box-shadow: var(--shadow); }
.plan-tag { position: absolute; top: -13px; left: 28px; font: 600 12px/1 var(--font-mono); color: #fff; background: var(--violet); padding: 7px 11px; border-radius: 999px; }
.plan h3 { font: 700 22px/1.2 var(--font-display); letter-spacing: -0.02em; margin: 0 0 6px; }
.plan-for { color: var(--muted); font-size: 15px; margin-bottom: 22px; }
.price { display: flex; align-items: baseline; gap: 6px; margin-bottom: 22px; }
.price strong { font: 700 52px/1 var(--font-display); letter-spacing: -0.04em; }
.price span { color: var(--muted); font-size: 15px; }
.limits { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; margin-bottom: 22px; }
.limits div { background: var(--mist); border-radius: 10px; padding: 10px; text-align: center; }
.limits strong { display: block; font: 700 20px/1.1 var(--font-display); }
.limits span { font-size: 12px; color: var(--muted); }
.plan ul { list-style: none; padding: 0; margin: 0 0 28px; display: grid; gap: 10px; font-size: 15.5px; }
.plan li { display: flex; gap: 10px; }
.plan li svg { width: 18px; height: 18px; color: var(--green); flex-shrink: 0; margin-top: 3px; }
.plan .btn { margin-top: auto; justify-content: center; }
.plans-note { margin-top: 28px; color: var(--muted); font-size: 14.5px; max-width: 760px; }

/* FAQ */
.faq { max-width: 820px; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 22px 0; font: 600 18px/1.35 var(--font-body);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 400 26px/1 var(--font-body); color: var(--violet); transition: transform 0.2s ease; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 0 22px; color: var(--muted); max-width: 70ch; }

/* CTA final */
.cta-final { text-align: center; }
.cta-final .h2 { font-size: clamp(34px, 5vw, 58px); max-width: 16ch; margin-inline: auto; }
.cta-final .lead { margin: 0 auto 32px; }
.cta-final .hero-actions { justify-content: center; margin-bottom: 0; }

/* Pie */
.site-footer { border-top: 1px solid var(--line); padding: 48px 0 36px; font-size: 15px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer-grid h4 { font: 600 13px/1 var(--font-mono); color: var(--muted); margin: 0 0 14px; letter-spacing: 0.02em; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer-grid a { text-decoration: none; color: var(--ink); }
.footer-grid a:hover { color: var(--violet); }
.footer-grid p { color: var(--muted); margin-top: 12px; max-width: 32ch; }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }

/* Botón flotante de WhatsApp */
.wa-float {
  position: fixed; right: 20px; bottom: 20px; z-index: 60;
  width: 56px; height: 56px; border-radius: 50%;
  display: grid; place-items: center; background: var(--green); color: #fff;
  box-shadow: 0 10px 24px rgba(31, 157, 85, 0.35);
  transition: transform 0.15s ease;
}
.wa-float:hover { transform: scale(1.06); }
.wa-float svg { width: 28px; height: 28px; }

/* Páginas legales */
.legal { padding: 64px 0 96px; }
.legal .wrap { max-width: 760px; }
.legal h1 { font-size: clamp(36px, 5vw, 52px); margin-bottom: 12px; }
.legal h2 { font: 700 22px/1.3 var(--font-display); letter-spacing: -0.02em; margin: 40px 0 12px; }
.legal p, .legal li { color: var(--ink-soft); }
.legal p + p { margin-top: 12px; }
.legal ul { padding-left: 20px; display: grid; gap: 6px; }
.legal .note { background: var(--mist); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; margin: 24px 0; font-size: 15px; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid, .split { grid-template-columns: 1fr; gap: 44px; }
  .features, .quotes, .plans, .missed { grid-template-columns: 1fr 1fr; }
  .plans { gap: 28px 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
  .nav-links, .nav-login { display: none; }
  .nav-toggle { display: block; }
  .site-header.is-open .nav-links {
    display: grid; gap: 4px; position: absolute; left: 0; right: 0; top: 68px;
    background: var(--paper); border-bottom: 1px solid var(--line); padding: 12px 20px 20px;
  }
  .site-header.is-open .nav-links a { display: block; padding: 12px 0; font-size: 17px; color: var(--ink); }
  .steps { grid-template-columns: 1fr; border-top: 0; }
  .step, .step + .step { padding: 24px 0; border-left: 0; border-top: 1px solid var(--line); }
  .ads-grid { grid-template-columns: 1fr; }
  .timeline-labels div { font-size: 13px; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .section { padding: 76px 0; }
  .hero { padding: 32px 0 64px; }
  .features, .quotes, .plans, .missed, .stats { grid-template-columns: 1fr; }
  .nav-cta .btn { padding: 10px 14px; font-size: 14px; }
  .demo-body { height: 430px; }
  .timeline-track, .timeline-labels { grid-template-columns: 1fr 1fr 2fr; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}