/* =========================================================
   GenCrece — Hub de Genética y Crecimiento Infantil
   Single stylesheet, organized by section.
   ========================================================= */

/* ---------- 1. Reset & custom properties ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; }
html { -webkit-text-size-adjust: 100%; tab-size: 2; scroll-behavior: smooth; }

:root {
  /* Pastel palette — trust + warmth */
  --bg:        #FAF6EF;
  --surface:   #FFFFFF;
  --surface-2: #FDFBF7;
  --ink:       #33413F;
  --ink-soft:  #6B7876;
  --border:    #E7E0D3;

  --mint:       #CDEBDD;
  --mint-deep:  #4E9E82;
  --mint-ink:   #1F5B47;

  --blue:       #CFE6F6;
  --blue-deep:  #4E8FBF;

  --peach:      #FBE3D3;
  --peach-deep: #E58F5E;

  --lavender:   #E5DBF4;
  --lavender-deep: #8C6CC4;

  --gold:       #F6C453;
  --gold-deep:  #E0A72E;

  --danger:     #E0715C;

  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 9px;

  --shadow-soft: 0 10px 30px -14px rgba(51, 65, 63, 0.18);
  --shadow-card: 0 2px 10px -4px rgba(51, 65, 63, 0.12);

  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --display: "Quicksand", var(--sans);
}

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  overscroll-behavior-y: none;
}

img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
h1, h2, h3, h4 { font-family: var(--display); font-weight: 700; text-wrap: balance; line-height: 1.15; letter-spacing: -0.01em; color: var(--ink); }
::selection { background: var(--mint); color: var(--mint-ink); }

:focus-visible {
  outline: 2px solid var(--mint-deep);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed; top: -100px; left: 1rem;
  padding: .6rem 1rem; background: var(--surface); color: var(--ink);
  z-index: 9999; border-radius: 8px; font-weight: 600;
  box-shadow: var(--shadow-soft);
}
.skip-link:focus { top: 1rem; }

.wrap { max-width: 980px; margin-inline: auto; padding-inline: 1.1rem; }

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

/* ---------- 2. Ad slots (placeholders) ---------- */
.ad-slot {
  display: flex; align-items: center; justify-content: center;
  min-height: 64px;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  background: repeating-linear-gradient(135deg, var(--surface-2), var(--surface-2) 10px, #F4EEE1 10px, #F4EEE1 20px);
  color: var(--ink-soft);
  font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; font-weight: 600;
}
.ad-slot--top { min-height: 46px; margin: 0; border-radius: 0; border-inline: 0; border-top: 0; }
.ad-slot--bottom { min-height: 56px; margin: 0; border-radius: 0; border-inline: 0; border-bottom: 0; }
.ad-slot--content { margin: 1.6rem auto; }
.ad-slot--native { margin: 1.1rem 0; min-height: 88px; }
.ad-slot__label { opacity: .75; }

/* ---------- 3. Header ---------- */
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding-block: .85rem;
}
.brand { display: flex; align-items: center; gap: .6rem; }
.brand__mark {
  display: grid; place-items: center;
  width: 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(145deg, var(--mint), var(--blue));
  color: var(--mint-ink);
  flex: none;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__text strong { font-family: var(--display); font-size: 1.15rem; }
.brand__text small { color: var(--ink-soft); font-size: .72rem; font-weight: 500; }
.site-header__trust { font-size: .78rem; color: var(--ink-soft); font-weight: 600; display: none; }
@media (min-width: 540px) { .site-header__trust { display: block; } }

/* ---------- 4. Hero ---------- */
.hero { padding-block: 1.8rem 1.2rem; text-align: center; }
.hero h1 { font-size: clamp(1.6rem, 4.4vw, 2.35rem); margin-inline: auto; max-width: 24ch; }
.hero__subtitle { color: var(--ink-soft); max-width: 52ch; margin: .7rem auto 0; font-size: .98rem; }

/* ---------- 5. Tabs ---------- */
.hub { padding-block: .4rem 1.4rem; }
.tabs {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: .5rem;
  background: var(--surface-2);
  padding: .4rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin-bottom: 1.1rem;
}
.tab-btn {
  display: flex; flex-direction: column; align-items: center; gap: .25rem;
  padding: .6rem .4rem;
  border-radius: var(--radius-md);
  font-weight: 600; font-size: .82rem;
  color: var(--ink-soft);
  transition: background .2s var(--ease-out), color .2s var(--ease-out), box-shadow .2s var(--ease-out);
  text-align: center;
}
.tab-btn__icon { font-size: 1.35rem; }
.tab-btn.is-active {
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-card);
}
.tab-btn:hover:not(.is-active) { color: var(--ink); }

@media (min-width: 540px) {
  .tab-btn { flex-direction: row; justify-content: center; font-size: .92rem; padding: .75rem .6rem; }
}

.tab-panel { animation: panelIn .25s var(--ease-out); }
@keyframes panelIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---------- 6. Tool card ---------- */
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.1rem 1.3rem;
  box-shadow: var(--shadow-soft);
}
@media (min-width: 720px) { .tool-card { padding: 1.6rem 1.8rem 1.9rem; } }

.mode-switch {
  display: inline-flex; gap: .3rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: .25rem;
  margin-bottom: 1rem;
}
.mode-btn {
  padding: .4rem .9rem;
  border-radius: 999px;
  font-size: .82rem; font-weight: 600;
  color: var(--ink-soft);
  transition: background .2s var(--ease-out), color .2s var(--ease-out);
}
.mode-btn.is-active { background: var(--mint); color: var(--mint-ink); }

.tool-form { margin-bottom: .2rem; }
.field-grid { display: grid; grid-template-columns: 1fr; gap: .85rem; }
@media (min-width: 540px) { .field-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 720px) { .field-grid { grid-template-columns: 1fr 1fr 1fr; } }
.field-grid--blood { grid-template-columns: 1fr 1fr; }
@media (min-width: 540px) { .field-grid--blood { grid-template-columns: repeat(4, 1fr); } }

.field { display: flex; flex-direction: column; gap: .35rem; }
.field span { font-size: .82rem; font-weight: 600; color: var(--ink-soft); }
.field input, .field select {
  font: inherit; color: var(--ink);
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .65rem .75rem;
  transition: border-color .2s var(--ease-out), box-shadow .2s var(--ease-out);
  width: 100%;
}
.field input:focus, .field select:focus {
  border-color: var(--mint-deep);
  box-shadow: 0 0 0 3px rgba(78, 158, 130, .18);
  outline: none;
}

fieldset { border: 0; padding: 0; }
.field-grid--advanced { margin-top: 1rem; padding-top: 1rem; border-top: 1px dashed var(--border); }
.field-grid--advanced legend, .grandparents-details summary {
  font-size: .85rem; font-weight: 700; color: var(--mint-ink); margin-bottom: .7rem;
  padding: 0;
}
.grandparents-details { margin-top: 1rem; }
.grandparents-details summary {
  cursor: pointer; list-style: none; display: inline-flex; align-items: center; gap: .35rem;
  padding: .5rem .8rem; background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px;
}
.grandparents-details summary::-webkit-details-marker { display: none; }
.grandparents-details[open] summary { margin-bottom: .9rem; }
.gp-group {
  border: 1px dashed var(--border); border-radius: var(--radius-md);
  padding: .75rem; display: flex; flex-direction: column; gap: .6rem;
}
.gp-group legend { font-size: .78rem; color: var(--ink-soft); font-weight: 700; padding: 0 0 .1rem; }

/* ---------- 7. Result zone ---------- */
.result-zone { margin-top: 1.2rem; }
.result-empty {
  padding: 1.1rem; text-align: center; color: var(--ink-soft);
  background: var(--surface-2); border-radius: var(--radius-md);
  border: 1px dashed var(--border); font-size: .92rem;
}

.result-card {
  background: linear-gradient(160deg, var(--mint) 0%, var(--surface) 55%);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.2rem;
}
.result-card + .result-card { margin-top: .8rem; }
.result-card h3 { font-size: .95rem; margin-bottom: .5rem; }
.result-card .big-number { font-size: 1.9rem; font-family: var(--display); font-weight: 700; color: var(--mint-ink); }
.result-card .sub { color: var(--ink-soft); font-size: .88rem; margin-top: .2rem; }

.percentile-gauge { margin-top: .8rem; }
.percentile-track {
  position: relative; height: 12px; border-radius: 999px;
  background: linear-gradient(90deg, var(--blue) 0%, var(--mint) 50%, var(--peach) 100%);
  overflow: visible;
}
.percentile-marker {
  position: absolute; top: 50%; width: 20px; height: 20px;
  background: var(--surface); border: 3px solid var(--mint-deep); border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: var(--shadow-card);
  transition: left .35s var(--ease-out);
}
.percentile-labels { display: flex; justify-content: space-between; font-size: .72rem; color: var(--ink-soft); margin-top: .4rem; }

.compare-note {
  margin-top: .8rem; padding: .7rem .9rem; background: var(--blue); border-radius: var(--radius-sm);
  font-size: .86rem; color: var(--ink);
}

.result-zone--charts { display: grid; gap: 1.2rem; }
@media (min-width: 640px) { .result-zone--charts { grid-template-columns: 1fr 1fr; } }
.chart-block { text-align: center; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 1rem; }
.chart-block h3 { font-size: .92rem; margin-bottom: .6rem; }
.chart-block canvas { margin-inline: auto; max-width: 100%; height: auto; }
.chart-legend { list-style: none; margin-top: .8rem; text-align: left; display: flex; flex-direction: column; gap: .35rem; }
.chart-legend li { display: flex; align-items: center; gap: .5rem; font-size: .85rem; }
.chart-legend .swatch { width: 12px; height: 12px; border-radius: 4px; flex: none; }
.chart-legend .pct { margin-left: auto; font-weight: 700; font-variant-numeric: tabular-nums; }

.blood-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .6rem; }
@media (min-width: 540px) { .blood-grid { grid-template-columns: repeat(4, 1fr); } }
.blood-chip {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .15rem;
  padding: .9rem .4rem; border-radius: var(--radius-md);
  border: 1.5px solid var(--border);
  background: var(--surface-2);
  font-family: var(--display); font-weight: 700; font-size: 1rem;
  color: var(--ink-soft);
  transition: transform .2s var(--ease-bounce);
}
.blood-chip small { font-family: var(--sans); font-weight: 600; font-size: .68rem; text-transform: uppercase; letter-spacing: .04em; }
.blood-chip.is-possible {
  background: var(--mint); border-color: var(--mint-deep); color: var(--mint-ink);
  transform: scale(1.04);
}
.blood-chip.is-impossible { opacity: .45; }

.privacy-note, .honest-note { font-size: .82rem; color: var(--ink-soft); margin-top: .9rem; }
.honest-note { font-style: italic; }

/* ---------- 8. CTA row / buttons ---------- */
.cta-row { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.3rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .45rem;
  padding: .8rem 1.2rem; border-radius: 999px;
  font-weight: 700; font-size: .92rem;
  transition: transform .18s var(--ease-out), box-shadow .18s var(--ease-out), background .18s var(--ease-out);
  white-space: normal; text-align: center;
}
.btn:active { transform: scale(.97); }
.btn-block { width: 100%; }
.btn-ghost {
  background: var(--surface-2); border: 1.5px solid var(--border); color: var(--ink);
}
.btn-ghost:hover { border-color: var(--mint-deep); }

.btn-premium {
  position: relative; overflow: hidden;
  flex: 1 1 260px;
  background: linear-gradient(120deg, var(--gold) 0%, var(--gold-deep) 55%, var(--peach-deep) 100%);
  color: #4A2E05;
  box-shadow: 0 10px 24px -10px rgba(224, 167, 46, .55);
}
.btn-premium:hover { box-shadow: 0 14px 30px -10px rgba(224, 167, 46, .65); }
.btn-premium::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255,255,255,.55) 48%, transparent 62%);
  transform: translateX(-120%);
  animation: shine 3.2s ease-in-out infinite;
}
@keyframes shine { 0%, 55% { transform: translateX(-120%); } 75% { transform: translateX(120%); } 100% { transform: translateX(120%); } }
@media (prefers-reduced-motion: reduce) { .btn-premium::after { animation: none; display: none; } }

/* ---------- 9. Info cards (SEO) ---------- */
.info-cards { display: grid; gap: 1rem; padding-block: 1.6rem; }
@media (min-width: 720px) { .info-cards { grid-template-columns: repeat(3, 1fr); } }
.info-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 1.2rem 1.3rem; box-shadow: var(--shadow-card);
}
.info-card h2 { font-size: 1.02rem; margin-bottom: .55rem; }
.info-card p { font-size: .88rem; color: var(--ink-soft); }
.info-card--legal { background: var(--lavender); border-color: transparent; }
.info-card--legal h2 { color: var(--lavender-deep); }
.info-card--legal a { text-decoration: underline; font-weight: 600; }

/* ---------- 10. FAQ ---------- */
.faq { padding-block: .6rem 2.2rem; }
.faq h2 { font-size: 1.3rem; margin-bottom: 1rem; text-align: center; }
.faq-list { display: flex; flex-direction: column; gap: .6rem; max-width: 720px; margin-inline: auto; }
.faq-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: .2rem .3rem;
}
.faq-item summary {
  cursor: pointer; list-style: none; padding: .85rem 1rem; font-weight: 600; font-size: .95rem;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.3rem; color: var(--mint-deep); flex: none; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { padding: 0 1rem 1rem; color: var(--ink-soft); font-size: .9rem; }

/* ---------- 11. Footer ---------- */
.site-footer { background: var(--surface-2); border-top: 1px solid var(--border); }
.site-footer__inner {
  display: flex; flex-wrap: wrap; gap: .7rem; align-items: center; justify-content: space-between;
  padding-block: 1.3rem; font-size: .82rem; color: var(--ink-soft);
}
.site-footer__links { display: flex; gap: 1rem; }
.site-footer__links a:hover { color: var(--mint-ink); }

/* ---------- 12. Payment modal ---------- */
.modal-pago {
  border: 0; border-radius: var(--radius-lg); padding: 0;
  width: min(440px, calc(100vw - 2rem));
  box-shadow: 0 30px 60px -20px rgba(51, 65, 63, .4);
}
.modal-pago::backdrop { background: rgba(51, 65, 63, .45); backdrop-filter: blur(2px); }
.modal-pago__form, .modal-pago__success { padding: 1.5rem 1.5rem 1.6rem; position: relative; }
.modal-close {
  position: absolute; top: .8rem; right: .8rem;
  width: 32px; height: 32px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--surface-2); border: 1px solid var(--border);
  font-size: 1rem;
}
.modal-pago__header { text-align: center; margin-bottom: 1rem; padding-top: .3rem; }
.modal-pago__badge {
  display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .04em;
  background: var(--mint); color: var(--mint-ink); padding: .25rem .6rem; border-radius: 999px; margin-bottom: .6rem;
}
.modal-pago__header h3 { font-size: 1.2rem; margin-bottom: .35rem; }
.modal-pago__header p { font-size: .85rem; color: var(--ink-soft); }
.modal-pago__price {
  text-align: center; font-family: var(--display); font-weight: 700; font-size: 1.8rem; color: var(--gold-deep);
  margin-bottom: .3rem;
}
.modal-pago__price small { font-family: var(--sans); font-size: .7rem; font-weight: 600; color: var(--ink-soft); margin-left: .4rem; }
.modal-pago__providers { display: flex; justify-content: center; gap: .5rem; margin-bottom: 1.1rem; flex-wrap: wrap; }
.modal-pago__providers span {
  font-size: .72rem; font-weight: 600; color: var(--ink-soft);
  border: 1px solid var(--border); border-radius: 999px; padding: .25rem .6rem;
}
.modal-pago__form .field { margin-bottom: .8rem; }
.modal-pago__row { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; }
.modal-pago__legal { font-size: .72rem; color: var(--ink-soft); text-align: center; margin-top: .8rem; }

.modal-pago__success { text-align: center; }
.success-icon { font-size: 2.6rem; margin-bottom: .5rem; }
.modal-pago__success h3 { margin-bottom: .4rem; }
.modal-pago__success p { color: var(--ink-soft); font-size: .9rem; margin-bottom: 1rem; }
.modal-pago__success .btn { margin-top: .6rem; }

[data-pago-submit].is-loading { opacity: .75; pointer-events: none; }

/* ---------- 13. State helpers ---------- */
[hidden] { display: none !important; }