/* ============================================================
   SAMNA · sistema visual
   Método Kukuri (disciplina tipográfica, monocromo cálido, números
   en mono, cero fotos de stock) aplicado a la marca de ella, con
   las convenciones de landing de Apple: tipo enorme, mucho aire,
   nav que se desenfoca, secciones que alternan papel y tinta.
   Fuentes autoalojadas — ninguna petición a terceros.
   ============================================================ */

@import url('fonts.css');

:root{
  /* Papel y tinta cálidos: clínico sin ser frío. */
  --paper:#FBFAF8;
  --paper-2:#F4F2EE;
  --paper-3:#EAE7E1;
  --ink:#12100E;
  --ink-2:#3B3833;
  --ink-3:#6F6A62;
  --ink-4:#A29C92;
  --line:#E2DED7;
  --line-2:#CFC9BF;

  /* Un solo acento. Verde profundo, sereno, nada de rosa-menopausia. */
  --accent:#1F4A40;
  --accent-2:#2E6659;
  --accent-soft:#EAF1EE;
  --accent-contrast:#FFFFFF;

  --display:'Fraunces', Georgia, 'Times New Roman', serif;
  --sans:'Inter Tight', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono:'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --wrap:1120px;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 1px 2px rgba(18,16,14,.04), 0 12px 40px rgba(18,16,14,.07);
  --shadow-lg:0 2px 6px rgba(18,16,14,.05), 0 30px 80px rgba(18,16,14,.11);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:var(--paper); color:var(--ink);
  font-family:var(--sans); font-size:17px; line-height:1.55;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
img,svg{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent);color:var(--accent-contrast)}

/* Accesibilidad: foco visible y salto al contenido. */
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--paper);padding:12px 18px;z-index:200}
.skip:focus{left:8px;top:8px}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.narrow{max-width:760px;margin-left:auto;margin-right:auto}

/* ---------- Tipografía ---------- */
.kicker{
  font-family:var(--mono); font-size:11px; font-weight:500;
  letter-spacing:.2em; text-transform:uppercase; color:var(--ink-3);
}
h1,h2,h3{font-family:var(--display);font-weight:600;letter-spacing:-.02em;line-height:1.05;text-wrap:balance}
h1{font-size:clamp(2.6rem,7vw,5.1rem);letter-spacing:-.035em}
h2{font-size:clamp(2rem,4.4vw,3.3rem)}
h3{font-size:clamp(1.2rem,2vw,1.5rem);line-height:1.2}
.lead{font-size:clamp(1.05rem,1.7vw,1.32rem);line-height:1.5;color:var(--ink-2);text-wrap:pretty}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
.muted{color:var(--ink-3)}
.small{font-size:14px;line-height:1.5}
.tiny{font-size:12.5px;line-height:1.5;color:var(--ink-3)}

/* ---------- Nav ---------- */
.nav{
  position:sticky;top:0;z-index:100;
  background:color-mix(in srgb, var(--paper) 78%, transparent);
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid transparent;transition:border-color .3s ease;
}
.nav.scrolled{border-bottom-color:var(--line)}
.nav .row{display:flex;align-items:center;justify-content:space-between;height:56px;gap:24px}
.brand{font-family:var(--display);font-size:20px;font-weight:600;letter-spacing:.01em}
.brand span{color:var(--ink-3);font-family:var(--sans);font-size:12px;font-weight:500;letter-spacing:.04em}
.nav ul{display:flex;gap:30px;list-style:none;align-items:center}
.nav ul a{font-size:14px;color:var(--ink-2);transition:color .2s}
.nav ul a:hover{color:var(--ink)}
@media (max-width:860px){ .nav ul{display:none} }

/* ---------- Botones ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--sans);font-size:15px;font-weight:500;line-height:1;
  padding:14px 26px;border-radius:999px;border:1px solid transparent;
  cursor:pointer;transition:transform .15s ease, background .2s ease, color .2s ease, border-color .2s;
  white-space:nowrap;
}
.btn:active{transform:scale(.975)}
.btn-primary{background:var(--accent);color:var(--accent-contrast)}
.btn-primary:hover{background:var(--accent-2)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--ink);background:var(--paper-2)}
.btn-ink{background:var(--ink);color:var(--paper)}
.btn-ink:hover{background:#2a2622}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none}

/* ---------- Secciones ---------- */
section{padding:clamp(72px,10vw,132px) 0}
section.tight{padding:clamp(52px,7vw,88px) 0}
.sec-ink{background:var(--ink);color:var(--paper)}
.sec-ink .kicker{color:var(--ink-4)}
.sec-ink .lead{color:#C9C4BB}
.sec-ink .muted{color:var(--ink-4)}
.sec-paper2{background:var(--paper-2)}
.sec-head{max-width:720px;margin-bottom:clamp(36px,5vw,60px)}
.sec-head .kicker{margin-bottom:16px;display:block}
.sec-head .lead{margin-top:18px}

/* ---------- Hero ---------- */
.hero{padding:clamp(64px,11vw,150px) 0 clamp(56px,8vw,104px);position:relative;overflow:hidden}
/* Aurora monocroma: gradiente sutil, sin fotos de stock. */
.hero::before{
  content:'';position:absolute;inset:-30% -10% auto -10%;height:120%;
  background:
    radial-gradient(46% 38% at 22% 18%, rgba(31,74,64,.10), transparent 62%),
    radial-gradient(40% 34% at 80% 8%, rgba(31,74,64,.06), transparent 60%);
  pointer-events:none;z-index:0;
}
.hero .wrap{position:relative;z-index:1}
.hero h1{margin:20px 0 0}
.hero .lead{margin-top:26px;max-width:620px}
.hero-cta{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}
.hero-facts{
  display:flex;gap:0;margin-top:clamp(48px,7vw,80px);
  border-top:1px solid var(--line);flex-wrap:wrap;
}
.fact{flex:1;min-width:150px;padding:22px 24px 0 0}
.fact .v{font-family:var(--mono);font-size:clamp(1.5rem,2.6vw,2rem);font-weight:700;letter-spacing:-.02em;display:block;line-height:1}
.fact .l{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);margin-top:9px;display:block}

/* ---------- Rejillas ---------- */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){ .g3,.g4{grid-template-columns:repeat(2,1fr)} }
@media (max-width:620px){ .g2,.g3,.g4{grid-template-columns:1fr} }

.card{
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;transition:border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.card:hover{border-color:var(--line-2);transform:translateY(-2px);box-shadow:var(--shadow)}
.card h3{margin-bottom:10px}
.card p{color:var(--ink-2);font-size:15.5px;line-height:1.55}
.sec-ink .card{background:#1B1815;border-color:#2E2A25}
.sec-ink .card p{color:#B8B2A8}

/* Pilares S·A·M·N·A */
.pilar{display:flex;gap:18px;align-items:flex-start;padding:22px 0;border-bottom:1px solid var(--line)}
.pilar:last-child{border-bottom:none}
.pilar .letra{
  font-family:var(--display);font-size:34px;font-weight:600;line-height:1;
  color:var(--accent);width:44px;flex-shrink:0;
}
.pilar h3{font-size:19px;margin-bottom:5px}
.pilar p{color:var(--ink-2);font-size:15.5px}

/* Semanas del programa */
.semana{border-top:1px solid var(--line);padding:26px 0;display:grid;grid-template-columns:88px 1fr;gap:24px;align-items:baseline}
.semana:last-child{border-bottom:1px solid var(--line)}
.semana .n{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}
.semana h3{margin-bottom:6px}
.semana p{color:var(--ink-2);font-size:15.5px}
@media (max-width:620px){ .semana{grid-template-columns:1fr;gap:8px} }

/* Listas con marca */
ul.ticks{list-style:none;display:grid;gap:14px}
ul.ticks li{display:flex;gap:13px;align-items:flex-start;font-size:16px;line-height:1.5;color:var(--ink-2)}
ul.ticks li::before{
  content:'';width:7px;height:7px;border-radius:50%;background:var(--accent);
  flex-shrink:0;margin-top:9px;
}
.sec-ink ul.ticks li{color:#C9C4BB}
.sec-ink ul.ticks li::before{background:var(--paper)}

/* ---------- Precio ---------- */
.precio-box{
  background:var(--paper);border:1px solid var(--line-2);border-radius:var(--radius);
  padding:clamp(30px,4vw,44px);box-shadow:var(--shadow);
}
.precio-cifra{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.precio-cifra .v{font-family:var(--mono);font-size:clamp(2.6rem,6vw,3.9rem);font-weight:700;letter-spacing:-.03em;line-height:1}
.precio-cifra .antes{font-family:var(--mono);font-size:16px;color:var(--ink-3);text-decoration:line-through}
.precio-meta{display:flex;gap:26px;margin:26px 0;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:22px}
.precio-meta div{min-width:120px}
.precio-meta .k{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);display:block;margin-bottom:6px}
.precio-meta .v{font-family:var(--mono);font-size:15px;font-weight:700}

/* ---------- Formulario ---------- */
.form{display:grid;gap:15px}
.field label{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;font-family:var(--sans);font-size:16px;color:var(--ink);
  background:var(--paper);border:1px solid var(--line-2);border-radius:var(--radius-sm);
  padding:13px 15px;transition:border-color .2s ease, box-shadow .2s ease;
}
.field textarea{min-height:92px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);
}
.consent{display:flex;gap:11px;align-items:flex-start;font-size:13px;line-height:1.5;color:var(--ink-3)}
.consent input{margin-top:3px;width:16px;height:16px;flex-shrink:0;accent-color:var(--accent)}
.form-msg{font-size:14.5px;padding:13px 16px;border-radius:var(--radius-sm);display:none}
.form-msg.ok{display:block;background:var(--accent-soft);color:var(--accent);border:1px solid #CFE0DA}
.form-msg.err{display:block;background:#FBEFEC;color:#8C3A22;border:1px solid #F0D6CE}
.honey{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}

/* ---------- FAQ ---------- */
details.faq{border-bottom:1px solid var(--line);padding:6px 0}
details.faq summary{
  cursor:pointer;list-style:none;padding:20px 0;font-size:17px;font-weight:500;
  display:flex;justify-content:space-between;gap:20px;align-items:center;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:'+';font-family:var(--mono);font-size:20px;color:var(--ink-3);transition:transform .2s ease;flex-shrink:0}
details.faq[open] summary::after{transform:rotate(45deg)}
details.faq p{padding:0 0 22px;color:var(--ink-2);font-size:15.5px;max-width:62ch}

/* ---------- Footer ---------- */
.foot{background:var(--ink);color:#B8B2A8;padding:60px 0 40px;font-size:14px}
.foot a{color:var(--paper)}
.foot a:hover{text-decoration:underline}
.foot .row{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;align-items:flex-start}
.foot .legal{border-top:1px solid #2E2A25;margin-top:36px;padding-top:22px;font-size:12.5px;color:var(--ink-4);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

/* ---------- Aviso de demo ---------- */
.demo-bar{
  background:var(--accent);color:var(--accent-contrast);
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  text-align:center;padding:9px 16px;
}

/* ---------- Chatbot ---------- */
.chat-fab{
  position:fixed;right:22px;bottom:22px;z-index:120;
  width:56px;height:56px;border-radius:50%;border:none;cursor:pointer;
  background:var(--ink);color:var(--paper);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-lg);transition:transform .2s ease, background .2s;
}
.chat-fab:hover{transform:scale(1.06)}
.chat-fab svg{width:23px;height:23px}
.chat-panel{
  position:fixed;right:22px;bottom:90px;z-index:121;
  width:min(390px, calc(100vw - 44px));height:min(540px, calc(100vh - 130px));
  background:var(--paper);border:1px solid var(--line-2);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);display:none;flex-direction:column;overflow:hidden;
}
.chat-panel.open{display:flex}
.chat-head{padding:16px 18px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:12px}
.chat-head .t{font-family:var(--display);font-size:16px;font-weight:600}
.chat-head .s{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin-top:2px}
.chat-close{background:none;border:none;cursor:pointer;color:var(--ink-3);font-size:22px;line-height:1;padding:4px}
.chat-close:hover{color:var(--ink)}
.chat-body{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:12px;scroll-behavior:smooth}
.msg{max-width:85%;padding:11px 14px;border-radius:15px;font-size:14.5px;line-height:1.5;white-space:pre-wrap;overflow-wrap:anywhere}
.msg.bot{background:var(--paper-2);color:var(--ink);align-self:flex-start;border-bottom-left-radius:5px}
.msg.me{background:var(--accent);color:var(--accent-contrast);align-self:flex-end;border-bottom-right-radius:5px}
.msg.sys{background:#FBEFEC;color:#8C3A22;align-self:stretch;max-width:100%;font-size:13.5px}
.chat-typing{display:flex;gap:4px;padding:12px 14px;align-self:flex-start}
.chat-typing i{width:6px;height:6px;border-radius:50%;background:var(--ink-4);animation:blink 1.3s infinite}
.chat-typing i:nth-child(2){animation-delay:.18s}
.chat-typing i:nth-child(3){animation-delay:.36s}
@keyframes blink{0%,60%,100%{opacity:.25}30%{opacity:1}}
.chat-foot{border-top:1px solid var(--line);padding:12px;display:flex;gap:9px;align-items:flex-end}
.chat-foot textarea{
  flex:1;font-family:var(--sans);font-size:14.5px;color:var(--ink);background:var(--paper-2);
  border:1px solid transparent;border-radius:12px;padding:11px 13px;resize:none;max-height:110px;min-height:42px;line-height:1.4;
}
.chat-foot textarea:focus{outline:none;border-color:var(--line-2);background:var(--paper)}
.chat-send{background:var(--ink);color:var(--paper);border:none;border-radius:11px;width:42px;height:42px;cursor:pointer;flex-shrink:0;display:flex;align-items:center;justify-content:center}
.chat-send:hover{background:var(--accent)}
.chat-send[disabled]{opacity:.4;cursor:not-allowed}
.chat-disclaimer{font-size:11px;color:var(--ink-3);padding:0 18px 12px;line-height:1.4}

/* ---------- Revelado al hacer scroll (Apple-ish, discreto) ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.22,1,.36,1), transform .7s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .chat-typing i{animation:none}
  .btn,.card{transition:none}
}