:root {
  --color-primary: #0F172A;
  --color-primary-contrast: #FFFFFF;
  --color-secondary: #14B8A6;
  --color-background: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-text: #0F172A;
  --color-muted-text: #64748B;
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;

  --font-heading: 'Sora', sans-serif;
  --font-body: 'Inter', sans-serif;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --space: 4px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-background);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2 { font-family: var(--font-heading); font-weight: 700; line-height: 1.2; }

a { color: var(--color-secondary); }

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

.container--narrow { max-width: 720px; }

.section { padding: 64px 0; }
.section--muted { background: var(--color-surface); }
.section--dark { background: var(--color-primary); color: var(--color-primary-contrast); }

.section__title {
  font-size: 32px;
  margin-bottom: 24px;
  text-align: center;
}
.section__title--light { color: var(--color-primary-contrast); }

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--color-surface);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
}

/* Brand mark (icon + wordmark) */
.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.brand-mark__icon {
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  overflow: hidden;
  display: block;
}
.brand-mark__icon img { width: 100%; height: 100%; object-fit: cover; display: block; }
.brand-mark__icon--sm { width: 26px; height: 26px; border-radius: var(--radius-sm); }
.brand-mark__word {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  text-transform: lowercase;
  letter-spacing: -0.01em;
  color: var(--color-text);
}
.brand-mark__word--accent { color: var(--color-secondary); }
.brand-mark--dark .brand-mark__word { color: var(--color-primary-contrast); }

/* Hero */
.hero {
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  padding: 72px 0 80px;
}
.hero__inner { max-width: 720px; }
.hero__title { font-size: 40px; margin-bottom: 20px; }
.hero__subtitle {
  font-size: 20px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
}

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 16px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}
.btn--primary {
  background: var(--color-secondary);
  color: var(--color-primary);
}
.btn--primary:hover { opacity: 0.92; }
.btn--primary:disabled { opacity: 0.6; cursor: not-allowed; }
.btn--block { width: 100%; }
.btn--sm { padding: 9px 18px; font-size: 14px; }

/* Badge */
.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  background: var(--color-warning);
  color: var(--color-primary);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

/* Demo table */
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid rgba(15,23,42,0.08); }
.demo-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  font-size: 14px;
}
.demo-table th, .demo-table td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(15,23,42,0.06);
}
.demo-table th {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-muted-text);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.demo-table tr:last-child td { border-bottom: none; }

/* Problema y consecuencias: tarjetas apiladas */
.problem-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 640px;
  margin: 0 auto;
}
.problem-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--color-surface);
  border: 1px solid rgba(15, 23, 42, 0.04);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}
.problem-card__icon {
  flex: none;
  width: 22px;
  height: 22px;
  color: var(--color-muted-text);
}
.problem-card__icon svg { width: 100%; height: 100%; }
.problem-card__text { font-size: 16px; }

/* Resultado y beneficios: grid de 2 columnas sin tarjeta */
.benefit-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 32px;
  max-width: 720px;
  margin: 0 auto;
}
.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 16px;
}
.benefit-item__icon {
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  color: var(--color-secondary);
}
.benefit-item__icon svg { width: 100%; height: 100%; }

/* Cómo funciona: grid de tarjetas numeradas */
.how-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  max-width: 720px;
  margin: 0 auto;
}
.how-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}
.how-card__num {
  display: block;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 28px;
  color: rgba(15, 23, 42, 0.16);
  margin-bottom: 8px;
}
.how-card__text { font-size: 15px; color: var(--color-text); }

/* Caso de uso ilustrativo: tarjeta oscura */
.case-card {
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 32px auto 0;
  max-width: 720px;
}
.case-card__eyebrow {
  display: block;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: 12px;
}
.case-card__text { font-size: 20px; line-height: 1.5; }
.case-card__text .highlight { color: var(--color-secondary); font-weight: 600; }

.trust-copy { font-size: 18px; color: var(--color-muted-text); text-align: center; }

/* Waitlist form */
.waitlist-form {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  color: var(--color-text);
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 14px; font-weight: 500; }
.field input,
.field select {
  font-family: var(--font-body);
  font-size: 15px;
  padding: 11px 13px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(15,23,42,0.15);
  outline: none;
  color: var(--color-text);
}
.field input:focus,
.field select:focus { border-color: var(--color-secondary); }

.form-caption {
  font-size: 13px;
  color: var(--color-muted-text);
  text-align: center;
}

.form-status { font-size: 14px; min-height: 20px; text-align: center; }
.form-status[data-state="error"] { color: var(--color-error); }
.form-status[data-state="success"] { color: var(--color-success); }

/* FAQ */
.faq-list { display: flex; flex-direction: column; gap: 8px; }
.faq-item {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font-heading);
}
.faq-item p { margin-top: 10px; color: var(--color-muted-text); }

/* Páginas legales */
.legal { padding: 48px 0 72px; }
.legal h1 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 32px;
  margin-bottom: 8px;
}
.legal .legal__updated {
  color: var(--color-muted-text);
  font-size: 14px;
  margin-bottom: 32px;
}
.legal h2 {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  margin: 32px 0 12px;
}
.legal p, .legal li { font-size: 15px; color: var(--color-text); }
.legal p { margin-bottom: 12px; }
.legal ul { padding-left: 20px; margin-bottom: 12px; }
.legal li { margin-bottom: 6px; }
.legal .legal__note {
  background: var(--color-surface);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-size: 14px;
  color: var(--color-muted-text);
  margin-bottom: 32px;
}
.legal a.back-link {
  display: inline-block;
  margin-bottom: 24px;
  font-size: 14px;
}

/* Footer */
.footer {
  background: var(--color-primary);
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  padding: 40px 0;
}
.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}
.footer p + p { margin-top: 6px; }
.footer a { color: rgba(255,255,255,0.8); }
.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 20px;
  font-size: 13px;
}
.footer__links a { text-decoration: none; }
.footer__links a:hover { text-decoration: underline; }

@media (max-width: 640px) {
  .hero { padding: 56px 0 56px; }
  .hero__title { font-size: 28px; }
  .hero__subtitle { font-size: 17px; }
  .section { padding: 48px 0; }
  .section__title { font-size: 24px; }
  .benefit-grid { grid-template-columns: 1fr; }
  .how-grid { grid-template-columns: 1fr; }
  .case-card { padding: 24px; }
  .case-card__text { font-size: 17px; }
  .nav__inner { padding: 10px 16px; }
  .nav .btn { display: none; }
}