/* Oficina IA · estilos
   Dirección visual: la interfaz de claude.ai (referencia Refero 6c0b1655):
   papel crema, tinta cálida, titulares serif, tarjetas blancas con borde fino,
   controles en píldora. Sin logo ni tipografías de Anthropic. */

:root {
  /* Base */
  --bg:           #F4F3EE; /* papel crema */
  --bg-2:         #EDEBE3; /* bandas alternas */
  --surface:      #FFFFFF;
  --surface-2:    #FAF9F5; /* tarjeta recomendada, pie de tarjeta */
  --ink:          #2F2C26; /* texto principal */
  --ink-2:        #4D4940; /* párrafos */
  --muted:        #6B665B; /* secundario (AA sobre crema) */
  --line:         #E2DFD5;
  --line-2:       #D3CFC2;

  /* Acento (morado de la referencia) */
  --accent:       #5E5EA2;
  --accent-hover: #4B4B88;
  --accent-soft:  #ECEBF6;
  --accent-ink:   #3F3F78; /* texto morado sobre fondo claro */
  --on-accent:    #FFFFFF;
  --on-accent-2:  #E4E3F4;

  /* Sección oscura */
  --dark-bg:      #262521;
  --dark-ink:     #F4F3EE;
  --dark-muted:   #BDB8AC;
  --dark-line:    #45423B;
  --dark-accent:  #B3AEE6;

  /* Estados */
  --high:         #B4432F;
  --high-soft:    #F7E4DF;
  --mid:          #9A6512;
  --mid-soft:     #F8EEDB;
  --mid-line:     #E6D2A9;
  --mid-ink:      #4A3A1C;
  --ok:           #4B7553;
  --ok-soft:      #E5EEE6;

  --serif: "Newsreader", "Iowan Old Style", Georgia, serif;
  --sans:  "Hanken Grotesk", "Segoe UI", system-ui, sans-serif;
  --mono:  "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --gutter: clamp(16px, 6vw, 80px);
  --section: clamp(64px, 9vw, 104px);
  --maxw: 1200px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--accent-ink); text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

h1, h2, h3 { margin: 0; font-family: var(--serif); font-weight: 500; color: var(--ink); text-wrap: balance; }
p { margin: 0; }

.wrap { width: 100%; max-width: calc(var(--maxw) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section); }
.band { background: var(--surface); border-block: 1px solid var(--line); }

.eyebrow {
  display: inline-block;
  font-size: 13px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent-ink);
}
.h2 { font-size: clamp(30px, 4.2vw, 46px); line-height: 1.1; letter-spacing: -.015em; }
.lead { font-family: var(--serif); font-size: clamp(18px, 1.7vw, 21px); line-height: 1.5; color: var(--ink-2); }
.head { display: flex; flex-direction: column; gap: 14px; max-width: 760px; margin-bottom: clamp(36px, 5vw, 56px); }
.mono { font-family: var(--mono); }

/* Botones */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 600 16px/1 var(--sans); text-decoration: none; text-align: center;
  padding: 15px 24px; border-radius: 10px; border: 1px solid transparent;
  transition: background-color .15s, border-color .15s, color .15s;
}
.btn svg { width: 18px; height: 18px; flex: none; }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); color: var(--on-accent); }
.btn-outline { border-color: var(--line-2); color: var(--ink); background: var(--surface); }
.btn-outline:hover { border-color: var(--ink); color: var(--ink); }
.btn-light { background: var(--surface); color: var(--ink); }
.btn-light:hover { background: var(--bg); color: var(--ink); }
.btn-sm { padding: 11px 16px; font-size: 15px; border-radius: var(--r-sm); }

/* Navegación */
.nav { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: flex; align-items: baseline; gap: 10px; text-decoration: none; color: var(--ink); }
.brand b { font-family: var(--serif); font-weight: 600; font-size: 24px; letter-spacing: -.01em; }
.brand small { font-size: 13px; color: var(--muted); }
.nav-links { display: flex; align-items: center; gap: 28px; font-size: 15px; }
.nav-links a:not(.btn) { color: var(--ink); text-decoration: none; }
.nav-links a:not(.btn):hover { color: var(--accent-ink); }

/* Hero */
.hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(40px, 5vw, 72px); align-items: center; padding-block: clamp(48px, 8vw, 96px) var(--section); }
.hero-copy { display: flex; flex-direction: column; gap: 26px; }
.hero h1 { font-size: clamp(38px, 5.4vw, 64px); line-height: 1.03; letter-spacing: -.02em; }
.hero .lead { max-width: 540px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 14px 22px; }
.link-arrow { color: var(--ink); font-weight: 500; text-decoration: underline; text-decoration-color: var(--line-2); }
.link-arrow:hover { color: var(--ink); text-decoration-color: var(--ink); }
.hero-note { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 14px; color: var(--muted); }
.hero-note span { display: inline-flex; align-items: center; gap: 7px; }
.hero-note svg { width: 16px; height: 16px; color: var(--ok); }

/* Tarjeta "Tu resumen de hoy" */
.brief { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: 0 1px 2px rgba(47,44,38,.04), 0 24px 60px rgba(47,44,38,.08); overflow: hidden; }
.brief-bar { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 16px 22px; border-bottom: 1px solid var(--line); }
.brief-bar strong { font-family: var(--serif); font-weight: 600; font-size: 21px; }
.brief-bar .mono { font-size: 14px; color: var(--muted); }
.brief-body { padding: 22px; display: flex; flex-direction: column; gap: 18px; }
.brief-hi { font-family: var(--serif); font-size: 18px; line-height: 1.45; color: var(--ink-2); }
.brief-hi b { color: var(--ink); font-weight: 600; }
.brief-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 16px; }
.item { display: flex; gap: 14px; }
.item::before { content: ""; width: 4px; flex: none; border-radius: 2px; background: var(--high); }
.item.is-mid::before { background: var(--mid); }
.item > div { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.item strong { font-size: 15px; font-weight: 600; line-height: 1.35; }
.item span { font-size: 14px; color: var(--ink-2); }
.brief-foot { padding: 11px 22px; border-top: 1px solid var(--line); background: var(--surface-2); font-size: 12.5px; color: var(--muted); }

/* Te entendemos */
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(28px, 3.5vw, 44px); }
.pain { border-top: 2px solid var(--ink); padding-top: 20px; display: flex; flex-direction: column; gap: 12px; }
.pain h3 { font-size: 23px; line-height: 1.2; }
.pain p { color: var(--ink-2); }

/* Qué es y qué no es */
.isnot-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: clamp(24px, 3vw, 34px); display: flex; flex-direction: column; gap: 18px; }
.isnot-card.is-not { background: var(--accent-soft); border-color: #DAD8F1; }
.isnot-card h3 { font-size: 25px; }
.isnot-card ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 14px; font-size: 17px; }
.isnot-card li { display: flex; gap: 12px; align-items: flex-start; }
.isnot-card svg { width: 20px; height: 20px; flex: none; margin-top: 3px; }
.isnot-card .yes { color: var(--accent); }
.isnot-card .no { color: var(--muted); }

/* Kit */
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: clamp(24px, 3vw, 32px); display: flex; flex-direction: column; gap: 12px; }
.card .ico { width: 44px; height: 44px; border-radius: var(--r-md); background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; margin-bottom: 6px; }
.card .ico svg { width: 24px; height: 24px; }
.card h3 { font-size: 25px; line-height: 1.2; }
.card p { color: var(--ink-2); }

/* Programa (oscuro) */
.dark { background: var(--dark-bg); color: var(--dark-ink); }
.dark h2, .dark h3 { color: var(--dark-ink); }
.dark .eyebrow { color: var(--dark-accent); }
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; list-style: none; margin: 0; padding: 0; }
.step { border-top: 1px solid var(--dark-line); padding-top: 18px; display: flex; flex-direction: column; gap: 10px; }
.step.is-key { border-top: 3px solid var(--dark-accent); padding-top: 16px; }
.step .mono { font-size: 13px; color: var(--dark-accent); }
.step h3 { font-size: 23px; line-height: 1.2; }
.step p { font-size: 15px; color: var(--dark-muted); }
.steps-note { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--dark-line); font-family: var(--serif); font-size: 19px; color: var(--dark-ink); }

/* Confianza */
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; }
.trust { display: flex; flex-direction: column; gap: 10px; }
.trust svg { width: 26px; height: 26px; color: var(--accent); margin-bottom: 4px; }
.trust h3 { font-size: 21px; line-height: 1.2; }
.trust p { font-size: 15px; color: var(--ink-2); }

/* Planes */
.notice { display: flex; align-items: center; gap: 14px; background: var(--mid-soft); border: 1px solid var(--mid-line); border-radius: var(--r-md); padding: 16px 22px; color: var(--mid-ink); margin-bottom: 28px; }
.notice b { flex: none; font-size: 11.5px; letter-spacing: .08em; text-transform: uppercase; background: var(--mid); color: #fff; padding: 4px 10px; border-radius: 99px; }
.plans { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; align-items: stretch; }
.plan { border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--surface); padding: clamp(24px, 3vw, 32px); display: flex; flex-direction: column; gap: 20px; }
.plan.is-rec { border: 2px solid var(--accent); background: var(--surface-2); }
.plan-head { display: flex; flex-direction: column; gap: 6px; }
.plan-head h3 { font-size: 25px; }
.plan-head > span:not(.badge) { font-size: 15px; color: var(--muted); }
.badge { align-self: flex-start; font-size: 12px; font-weight: 600; background: var(--accent); color: var(--on-accent); padding: 3px 10px; border-radius: 99px; }
.price { display: flex; flex-direction: column; gap: 2px; }
.price b { font: 500 28px/1.2 var(--mono); }
.price s { font-size: 16px; color: var(--muted); }
.price small { font-size: 14px; color: var(--muted); }
.price .pilot { color: var(--mid); font-weight: 600; }
.checks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; font-size: 15px; color: var(--ink-2); flex-grow: 1; }
.checks li { display: flex; gap: 10px; }
.checks svg { width: 18px; height: 18px; flex: none; margin-top: 2px; color: var(--accent); }
.plans-note { margin-top: 24px; font-size: 14px; color: var(--muted); }

/* Preguntas */
.faq { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: clamp(28px, 5vw, 64px); }
.faq-list { border-top: 1px solid var(--line-2); }
.faq details { border-bottom: 1px solid var(--line-2); }
.faq summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 0; font-size: 18px; font-weight: 600; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; flex: none; width: 10px; height: 10px; border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: rotate(45deg) translateY(-3px); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(-135deg) translateY(-3px); }
.faq details p { padding: 0 0 22px; color: var(--ink-2); max-width: 64ch; }

/* Cierre */
.cta { background: var(--accent); color: var(--on-accent); }
.cta .wrap { display: flex; flex-direction: column; align-items: flex-start; gap: 22px; }
.cta h2 { color: var(--on-accent); font-size: clamp(34px, 5vw, 56px); line-height: 1.05; letter-spacing: -.02em; }
.cta p { font-family: var(--serif); font-size: clamp(18px, 1.7vw, 21px); line-height: 1.5; max-width: 640px; color: var(--on-accent-2); }
.cta .mono { font-size: clamp(18px, 2vw, 22px); }
.cta-row { display: flex; align-items: center; flex-wrap: wrap; gap: 14px 22px; }
.cta-row .mono { font-size: 18px; user-select: all; }

/* Pie */
.foot .wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px 24px; padding-block: 28px; font-size: 14px; color: var(--muted); }
.foot strong { font-family: var(--serif); color: var(--ink); font-weight: 600; }

/* Responsive */
@media (max-width: 1080px) {
  .steps, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 40px; }
}
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; }
  .nav-links a:not(.btn) { display: none; }
  .plans { grid-template-columns: 1fr; max-width: 560px; }
  .plan.is-rec { order: -1; }
  .faq { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .notice { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 560px) {
  .steps, .grid-4 { grid-template-columns: 1fr; }
  .brand small { display: none; }
  .hero-actions .btn { width: 100%; }
  .nav .btn-sm { padding: 10px 14px; font-size: 14px; }
}

/* ===== Entrada animada ===== */
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

.rise, .brief-list .item { animation: rise .8s cubic-bezier(.2,.7,.2,1) both; animation-delay: var(--d, 0ms); }

/* Segunda parte del titular en itálica morada, como en las piezas */
.hero h1 em { font-style: italic; color: var(--accent-ink); }

@media (prefers-reduced-motion: reduce) {
  .rise, .brief-list .item { animation: none; }
}

@media (max-width: 560px) {
  .brief-bar, .brief-body { padding-inline: 16px; }
  .brief-foot { padding-inline: 16px; }
}