/* =========================================================================
   KIT SERENO — Sistema de diseño
   Paleta: derivada estrictamente de la identidad de marca provista.
   -------------------------------------------------------------------------
   --tan   #C7B299  color principal (silueta / calma)
   --yellow#FCEE21  chispa mayor (estímulo / alerta suave)
   --red   #E30613  chispa media (energía)
   --blue  #0000FF  chispa menor (foco / frescura)
   --cream #FBF6EE  fondo cálido
   --ink   #1E1810  texto / trazos (hermano del negro de línea del logo)
   Tipografía: Space Mono (voz de marca / logotipo) + Quicksand (cuerpo, cálida y redonda)
   ========================================================================= */

:root{
  --tan: #C7B299;
  --tan-deep: #a6875f;
  --tan-pale: #ece3d6;
  --yellow: #FCEE21;
  --red: #E30613;
  --blue: #0000FF;
  --cream: #FBF6EE;
  --ink: #1E1810;
  --ink-soft: #4a4238;
  --line: #e4dccc;
  --white: #ffffff;

  --font-display: 'Space Mono', 'Courier New', monospace;
  --font-body: 'Quicksand', system-ui, -apple-system, sans-serif;

  --radius-blob: 63% 37% 54% 46% / 55% 48% 52% 45%;
  --radius-blob-2: 42% 58% 61% 39% / 45% 42% 58% 55%;
  --shadow-soft: 0 18px 40px -20px rgba(30, 24, 16, 0.35);
  --container: 1180px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: var(--font-body);
  background: var(--cream);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
ul{ margin: 0; padding: 0; list-style: none; }
button{ font-family: inherit; }

.wrap{ max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.skip-link{
  position: absolute; left: -999px; top: 0; background: var(--ink); color: var(--cream);
  padding: 10px 16px; z-index: 999; border-radius: 0 0 8px 0;
}
.skip-link:focus{ left: 0; }

:focus-visible{ outline: 3px solid var(--blue); outline-offset: 3px; }

h1, h2, h3, h4{
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}
h1{ font-size: clamp(2.4rem, 5vw, 4rem); }
h2{ font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
h3{ font-size: 1.3rem; }
p{ margin: 0 0 1em; color: var(--ink-soft); }

.eyebrow{
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .75rem;
  color: var(--tan-deep);
  display: inline-flex;
  align-items: center;
  gap: .5em;
  margin-bottom: 1em;
}
.eyebrow::before{ content: ''; width: 22px; height: 2px; background: var(--red); display: inline-block; }

/* ---------- Botones ---------- */
.btn{
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .95rem;
  padding: 14px 28px;
  border-radius: 999px;
  border: 2px solid var(--ink);
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
  white-space: nowrap;
}
.btn:hover{ transform: translateY(-2px); box-shadow: var(--shadow-soft); }
.btn:active{ transform: translateY(0); }
.btn-primary{ background: var(--ink); color: var(--cream); }
.btn-primary:hover{ background: var(--red); border-color: var(--red); color: var(--white); }
.btn-outline{ background: transparent; color: var(--ink); }
.btn-outline:hover{ background: var(--ink); color: var(--cream); }
.btn-block{ width: 100%; }
.btn-lg{ padding: 18px 32px; font-size: 1.05rem; }
.btn[disabled]{ opacity: .5; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

.hero-actions, .form-actions{ display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- Header ---------- */
.site-header{
  position: sticky; top: 0; z-index: 100;
  background: rgba(251, 246, 238, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner{ display: flex; align-items: center; justify-content: space-between; padding-block: 14px; gap: 20px; }
.brand{ display: flex; align-items: center; gap: 10px; }
.brand-mark{ width: 40px; height: 40px; object-fit: contain; }
.brand-word{ font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; }

.site-nav{ display: flex; align-items: center; gap: 28px; }
.site-nav a{
  font-family: var(--font-display);
  font-size: .85rem;
  position: relative;
  padding: 6px 0;
}
.site-nav a::after{
  content: ''; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
  background: var(--red); transition: width .2s ease;
}
.site-nav a:hover::after, .site-nav a.active::after{ width: 100%; }
.site-nav a.active{ color: var(--red); }

.cart-link{
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--red); color: var(--white) !important;
  padding: 8px 18px; border-radius: 999px; border: 2px solid var(--ink);
  font-family: var(--font-display); font-weight: 700; font-size: .82rem;
}
.cart-link:hover{ transform: translateY(-1px); }

.nav-toggle{
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; background: none; border: none; cursor: pointer;
}
.nav-toggle span{ width: 24px; height: 2px; background: var(--ink); display: block; }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  padding: 64px 0 90px;
  overflow: hidden;
}
.hero-inner{
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center;
}
.hero-copy p.lead{ font-size: 1.15rem; max-width: 46ch; }
.hero-visual{
  position: relative; display: flex; align-items: center; justify-content: center;
  min-height: 380px;
}
.hero-visual .blob-bg{
  position: absolute; inset: 0; margin: auto; width: 88%; max-width: 420px; aspect-ratio: 1/1.15;
  background: var(--tan); border-radius: var(--radius-blob);
  opacity: .9;
}
.hero-visual img.hero-figure{
  position: relative; width: 78%; max-width: 340px; filter: drop-shadow(0 20px 30px rgba(30,24,16,.25));
  animation: float 6s ease-in-out infinite;
}
@keyframes float{ 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(-14px);} }

.spark{ position: absolute; display: block; }
.spark svg{ width: 100%; height: 100%; }
.spark.spark-yellow{ width: 46px; top: 12%; right: 6%; animation: twinkle 2.6s ease-in-out infinite; }
.spark.spark-red{ width: 26px; bottom: 20%; left: 4%; animation: twinkle 2.6s ease-in-out infinite .5s; }
.spark.spark-blue{ width: 20px; bottom: 10%; right: 20%; animation: twinkle 2.6s ease-in-out infinite 1s; }
@keyframes twinkle{
  0%, 100%{ transform: scale(1) rotate(0deg); opacity: .85; }
  50%{ transform: scale(1.25) rotate(8deg); opacity: 1; }
}

/* ---------- Secciones genéricas ---------- */
section{ padding: 80px 0; }
.section-head{ max-width: 640px; margin-bottom: 48px; }
.section-alt{ background: var(--tan-pale); }

.divider-blob{
  height: 90px; background: var(--cream);
  -webkit-mask-image: radial-gradient(60% 140% at 50% 0%, transparent 60%, black 61%);
}

/* ---------- ¿Qué es Kit Sereno? ---------- */
.about-grid{ display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: center; }
.about-visual{ position: relative; }
.about-visual img{ width: 100%; max-width: 360px; margin: 0 auto; }

.founder-visual{
  display: flex; align-items: center; justify-content: center;
}
.founder-photo{
  width: 100%; max-width: 320px; aspect-ratio: 1 / 1; object-fit: cover;
  border-radius: 24px; border: 3px solid var(--ink); box-shadow: var(--shadow-soft);
}

/* ---------- Cinco sentidos ---------- */
.senses-grid{
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px;
}
.sense-card{
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: var(--radius-blob-2);
  padding: 34px 20px;
  text-align: center;
  transition: transform .2s ease, box-shadow .2s ease;
}
.sense-card:hover{ transform: translateY(-6px) rotate(-1deg); box-shadow: var(--shadow-soft); }
.sense-icon{ font-size: 2.2rem; display: block; margin-bottom: 14px; }
.sense-card h3{ font-size: 1rem; margin-bottom: 6px; }
.sense-card p{ font-size: .88rem; margin: 0; }
.sense-card.tacto{ background: var(--tan-pale); }
.sense-card.audicion{ background: #fffbe0; }
.sense-card.olfato{ background: #ffe9ea; }
.sense-card.vision{ background: #e8e8ff; }
.sense-card.gusto{ background: var(--tan-pale); }

/* ---------- Personaliza ---------- */
.personalize{
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
  background: var(--ink); color: var(--cream);
  border-radius: 32px;
  padding: 56px;
}
.personalize .eyebrow{ color: var(--yellow); }
.personalize .eyebrow::before{ background: var(--yellow); }
.personalize h2{ color: var(--cream); }
.personalize p{ color: #d8d0c2; }
.personalize-figure{ display: flex; justify-content: center; }
.personalize-figure img{ width: 70%; max-width: 260px; }

/* ---------- Beneficios ---------- */
.benefits-grid{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.benefit-card{
  border: 2px dashed var(--tan-deep);
  border-radius: 20px;
  padding: 28px;
}
.benefit-card .mark{
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--yellow); display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 700; margin-bottom: 16px;
  border: 2px solid var(--ink);
}

.notice{
  background: var(--tan-pale); border-left: 4px solid var(--red);
  padding: 18px 22px; border-radius: 8px; font-size: .92rem; color: var(--ink-soft);
}

/* ---------- FAQ ---------- */
.faq-list{ max-width: 760px; }
.faq-item{ border-bottom: 1px solid var(--line); }
.faq-question{
  width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 22px 4px; font-family: var(--font-display); font-weight: 700; font-size: 1rem; color: var(--ink);
}
.faq-question .plus{ font-size: 1.4rem; color: var(--red); transition: transform .2s ease; flex: none; }
.faq-item.open .faq-question .plus{ transform: rotate(45deg); }
.faq-answer{
  max-height: 0; overflow: hidden; transition: max-height .3s ease;
}
.faq-answer p{ padding: 0 4px 20px; margin: 0; }

/* ---------- Footer ---------- */
.site-footer{ background: var(--ink); color: #cfc6b6; padding-top: 64px; }
.footer-grid{ display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 32px; padding-bottom: 40px; }
.footer-mark{ width: 34px; margin-bottom: 10px; opacity: .9; }
.footer-title{ font-family: var(--font-display); color: var(--cream); font-size: 1.1rem; margin-bottom: 4px; }
.footer-tag{ font-size: .88rem; margin-bottom: 16px; }
.footer-social{ display: flex; flex-direction: column; gap: 6px; }
.footer-social a:hover{ color: var(--yellow); }
.footer-heading{ font-family: var(--font-display); color: var(--cream); font-size: .82rem; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 14px; }
.footer-col a{ display: block; padding: 4px 0; font-size: .9rem; }
.footer-col a:hover{ color: var(--yellow); }
.footer-bottom{ border-top: 1px solid rgba(255,255,255,.1); padding: 18px 24px; font-size: .8rem; }

/* ---------- El Kit — producto ---------- */
.product-layout{ display: grid; grid-template-columns: .85fr 1.15fr; gap: 56px; align-items: start; }
.product-visual{ position: sticky; top: 110px; }
.product-visual .blob-bg{
  background: var(--tan); border-radius: var(--radius-blob);
  aspect-ratio: 1/1.1; display: flex; align-items: center; justify-content: center; padding: 30px;
}
.price-note{ font-size: .85rem; color: var(--ink-soft); }

.config-group{
  border: 2px solid var(--ink); border-radius: 20px; padding: 26px; margin-bottom: 20px; background: var(--white);
}
.config-group h3{ display: flex; align-items: center; gap: 10px; font-size: 1.05rem; margin-bottom: 4px; }
.config-items{ margin-top: 14px; display: flex; flex-direction: column; gap: 10px; }
.config-item{
  display: flex; align-items: center; justify-content: space-between;
  background: var(--tan-pale); border-radius: 10px; padding: 10px 14px; font-size: .92rem;
}

.summary-box{
  position: sticky; bottom: 0; background: var(--white); border: 2px solid var(--ink);
  border-radius: 20px; padding: 26px; margin-top: 8px;
}

/* ---------- Contacto ---------- */
.contact-box{
  max-width: 560px; margin: 0 auto; text-align: center;
  border: 2px solid var(--ink); border-radius: 24px; padding: 56px 32px; background: var(--white);
}
.contact-box .brand-mark-lg{ width: 64px; margin: 0 auto 18px; }

/* ---------- Cómo funciona ---------- */
.steps{ display: grid; gap: 22px; max-width: 760px; }
.step-row{ display: flex; gap: 20px; align-items: flex-start; }
.step-num{
  font-family: var(--font-display); font-weight: 700; font-size: 1.1rem;
  width: 44px; height: 44px; border-radius: 50%; border: 2px solid var(--ink);
  display: flex; align-items: center; justify-content: center; flex: none;
  background: var(--yellow);
}

/* ---------- Alerts ---------- */
.alert{ padding: 14px 18px; border-radius: 10px; margin-bottom: 20px; font-size: .92rem; }
.alert-error{ background: #fdeaea; border: 1px solid var(--red); color: #7a0d17; }
.alert-success{ background: #eafaf0; border: 1px solid #1e8a4c; color: #145c33; }

/* ---------- Page header ---------- */
.page-hero{ padding: 56px 0 20px; }
.page-hero h1{ margin-bottom: 8px; }

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .hero-inner, .about-grid, .personalize, .product-layout{
    grid-template-columns: 1fr;
  }
  .product-visual{ position: static; order: -1; max-width: 320px; margin: 0 auto 20px; }
  .senses-grid{ grid-template-columns: repeat(3, 1fr); }
  .benefits-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px){
  .nav-toggle{ display: flex; }
  .site-nav{
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--cream); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: flex-start; gap: 4px; padding: 12px 24px 20px;
    display: none;
  }
  .site-nav.open{ display: flex; }
  .site-nav a{ width: 100%; padding: 10px 0; }
  .senses-grid{ grid-template-columns: repeat(2, 1fr); }
  .form-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; }
  .personalize{ padding: 32px; border-radius: 24px; }
}