/* ==========================================================================
   Ywori — landing page
   Paleta, tipografía y espaciados se controlan desde las variables :root.
   Ver README.md para instrucciones de personalización.
   ========================================================================== */

:root {
  /* --- Colores de marca (paleta propuesta, reemplazable) --- */
  --color-primary: #16213E;       /* azul marino institucional */
  --color-primary-dark: #0D1526;
  --color-accent: #2FBF9F;        /* verde-azulado tecnológico, CTAs */
  --color-accent-dark: #21937A;
  --color-secondary: #6C63FF;     /* violeta, acentos de IA */

  --color-bg: #FFFFFF;
  --color-bg-alt: #F5F7FA;
  --color-bg-dark: #101827;

  --color-text: #1A2233;
  --color-text-muted: #5B6472;
  --color-text-on-dark: #F5F7FA;
  --color-text-on-dark-muted: #B7C0D8;

  --color-border: #E2E6EC;
  --color-danger: #C0392B;
  --color-success: #21937A;

  /* --- Tipografía --- */
  --font-heading: "Poppins", "Inter", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  /* --- Layout --- */
  --container-width: 1140px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(16, 24, 39, 0.08);
  --shadow-md: 0 8px 24px rgba(16, 24, 39, 0.10);
  --header-height: 72px;
}

/* --- Reset básico --- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 12px); }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
ul, ol { padding-left: 1.25rem; }
a { color: var(--color-accent-dark); }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.25;
  margin: 0 0 0.6em;
}

/* --- Accesibilidad: foco visible siempre --- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 0.5rem;
  top: -3rem;
  background: var(--color-primary);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top 0.15s ease-in-out;
}
.skip-link:focus { top: 0.5rem; }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* --- Botones --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0.7rem 1.3rem;
  cursor: pointer;
  transition: transform 0.12s ease, background-color 0.12s ease, color 0.12s ease, border-color 0.12s ease;
  min-height: 44px;
}
.btn--primary { background: var(--color-accent); color: var(--color-primary-dark); }
.btn--primary:hover { background: var(--color-accent-dark); color: #fff; }
.btn--secondary { background: transparent; border-color: var(--color-primary); color: var(--color-primary); }
.btn--secondary:hover { background: var(--color-primary); color: #fff; }
.btn--ghost { background: transparent; border-color: var(--color-border); color: var(--color-text-muted); }
.btn--ghost:hover { border-color: var(--color-text-muted); color: var(--color-text); }
.btn--whatsapp { background: #25D366; color: #06301C; }
.btn--whatsapp:hover { background: #1DA851; color: #fff; }
.btn--lg { padding: 0.95rem 1.75rem; font-size: 1.05rem; }
.btn--block { width: 100%; }

/* ==========================================================================
   6. Barra de navegación
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 1rem;
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-primary);
}
.nav__brand-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
}
.brand-accent { color: var(--color-accent); }
.nav__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.nav__toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: var(--color-primary);
  border-radius: 2px;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.nav__links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}
.nav__links a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}
.nav__links a:hover { color: var(--color-accent-dark); }

@media (max-width: 860px) {
  .nav__toggle { display: flex; }
  .nav__menu {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1.25rem 1.25rem;
    display: none;
  }
  .nav__menu.is-open { display: flex; }
  .nav__links {
    flex-direction: column;
    gap: 0;
  }
  .nav__links a {
    display: block;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
  }
  .nav__cta { margin-top: 1rem; text-align: center; }
}
@media (min-width: 861px) {
  .nav__toggle { display: none; }
}

/* ==========================================================================
   Secciones genéricas
   ========================================================================== */
.section { padding: 4rem 0; }
.section--alt { background: var(--color-bg-alt); }
.section__title {
  font-size: clamp(1.6rem, 1.3rem + 1.2vw, 2.2rem);
  text-align: center;
}
.section__lead {
  max-width: 760px;
  margin: 0 auto 2.5rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li {
  position: relative;
  padding: 0.4rem 0 0.4rem 1.75rem;
}
.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent-dark);
  font-weight: 700;
}

/* ==========================================================================
   7. Hero
   ========================================================================== */
.hero {
  background: radial-gradient(circle at 15% 20%, rgba(47, 191, 159, 0.12), transparent 45%),
              linear-gradient(180deg, #ffffff 0%, var(--color-bg-alt) 100%);
  padding: 3.5rem 0 4rem;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}
@media (min-width: 960px) {
  .hero__grid { grid-template-columns: 1.05fr 0.95fr; gap: 3rem; }
}
.hero__title {
  font-size: clamp(1.9rem, 1.4rem + 2vw, 2.75rem);
  margin-bottom: 0.75rem;
}
.hero__subtitle {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  max-width: 56ch;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin: 1.75rem 0;
}
.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0;
}

/* --- Mockup de reemplazo --- */
.mockup {
  background: var(--color-bg-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(255,255,255,0.06);
}
.mockup__bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1rem;
  background: #0B1220;
}
.mockup__dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: rgba(255,255,255,0.25);
}
.mockup__bar-title {
  margin-left: 0.6rem;
  color: var(--color-text-on-dark-muted);
  font-size: 0.8rem;
  flex: 1;
}
.mockup__timer {
  font-family: var(--font-heading);
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 600;
}
.mockup__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  padding: 1.25rem;
}
@media (min-width: 560px) {
  .mockup__body { grid-template-columns: 1.5fr 1fr; }
}
.mockup__chat { display: flex; flex-direction: column; gap: 0.6rem; }
.mockup__avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--color-secondary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 0.2rem;
}
.mockup__bubble {
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  max-width: 92%;
  line-height: 1.4;
}
.mockup__bubble--facilitator {
  background: rgba(108, 99, 255, 0.18);
  color: var(--color-text-on-dark);
  border-top-left-radius: 4px;
}
.mockup__bubble--user {
  background: rgba(47, 191, 159, 0.16);
  color: var(--color-text-on-dark);
  align-self: flex-end;
  border-top-right-radius: 4px;
}
.mockup__rubric {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 0.9rem;
}
.mockup__rubric-title {
  font-size: 0.85rem;
  color: var(--color-text-on-dark);
  margin-bottom: 0.6rem;
}
.mockup__rubric-item, .mockup__rubric-total {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-on-dark-muted);
  padding: 0.3rem 0;
}
.mockup__score { color: var(--color-accent); font-weight: 600; }
.mockup__rubric-total {
  margin-top: 0.4rem;
  padding-top: 0.5rem;
  border-top: 1px solid rgba(255,255,255,0.12);
  color: var(--color-text-on-dark);
  font-weight: 700;
}

/* ==========================================================================
   9. Cómo funciona
   ========================================================================== */
.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 720px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1080px) {
  .steps { grid-template-columns: repeat(4, 1fr); }
}
.steps__item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}
.steps__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.steps__title { margin-bottom: 0.4rem; font-size: 1.1rem; }

/* ==========================================================================
   Tarjetas genéricas (actividades / integraciones)
   ========================================================================== */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 640px) { .cards-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .cards-grid { grid-template-columns: repeat(3, 1fr); } }
.cards-grid--three { grid-template-columns: 1fr; }
@media (min-width: 640px) { .cards-grid--three { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  position: relative;
}
.card__title { font-size: 1.05rem; margin-bottom: 0.4rem; }
.card--upcoming { border-style: dashed; background: var(--color-bg-alt); }
.badge {
  display: inline-block;
  background: var(--color-secondary);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  margin-bottom: 0.6rem;
}

/* ==========================================================================
   11. Beneficios
   ========================================================================== */
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 800px) { .benefits-grid { grid-template-columns: repeat(3, 1fr); } }
.benefit-column {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--color-border);
}
.benefit-column__title { font-size: 1.1rem; }

/* ==========================================================================
   12. Casos de uso
   ========================================================================== */
.usecases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 640px) { .usecases-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .usecases-grid { grid-template-columns: repeat(3, 1fr); } }
.usecase-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}
.usecase-card__title { font-size: 1.05rem; }
.usecase-card ul { margin: 0; padding-left: 1.1rem; color: var(--color-text-muted); }
.usecase-card li { margin-bottom: 0.3rem; }

/* ==========================================================================
   13. Precios
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 720px) { .pricing-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .pricing-grid { grid-template-columns: repeat(4, 1fr); } }

.pricing-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  position: relative;
}
.pricing-card--popular {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}
.pricing-card__badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: var(--color-primary-dark);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  white-space: nowrap;
}
.pricing-card__name { font-size: 1.2rem; margin-bottom: 0.25rem; }
.pricing-card__price {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0.3rem 0 0.1rem;
}
.pricing-card__price-note { color: var(--color-text-muted); font-size: 0.85rem; margin: 0 0 0.25rem; }
.pricing-card__minutes { font-weight: 600; margin-bottom: 0.25rem; }
.pricing-card__equivalence { color: var(--color-text-muted); font-size: 0.85rem; margin-bottom: 1rem; }
.pricing-card__features {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  flex: 1;
}
.pricing-card__features li {
  position: relative;
  padding: 0.3rem 0 0.3rem 1.5rem;
  font-size: 0.9rem;
  color: var(--color-text);
}
.pricing-card__features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent-dark);
  font-weight: 700;
}

.pricing-notes {
  max-width: 820px;
  margin: 2.5rem auto 0;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}
.pricing-notes__exchange {
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
  margin-top: 1rem;
}

/* ==========================================================================
   14. Calculadora
   ========================================================================== */
.calculator {
  max-width: 860px;
  margin: 0 auto;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}
.calculator__form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}
@media (min-width: 640px) {
  .calculator__form { grid-template-columns: repeat(2, 1fr); }
}
.calculator__actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.calculator__exchange-note {
  grid-column: 1 / -1;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin: 0;
}
.calculator__result {
  margin-top: 2rem;
  padding-top: 1.75rem;
  border-top: 1px dashed var(--color-border);
}
.calculator__result-title { margin-bottom: 0.75rem; }
.calculator__result-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
}
.calculator__result-list li { padding: 0.25rem 0; }
.calculator__result-block { margin-bottom: 1.25rem; }
.calculator__result-block h4 { margin-bottom: 0.3rem; font-size: 0.95rem; color: var(--color-text-muted); }
.calculator__plan-suggestion {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-primary);
  font-size: 1.15rem;
}
.calculator__disclaimer {
  margin-top: 1.5rem;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   Formularios (compartido: calculadora + contacto)
   ========================================================================== */
.form-field { display: flex; flex-direction: column; gap: 0.35rem; }
.form-field--full { grid-column: 1 / -1; }
label { font-weight: 600; font-size: 0.9rem; }
.form-field__optional { font-weight: 400; color: var(--color-text-muted); }
.form-field__hint { font-size: 0.8rem; color: var(--color-text-muted); margin: 0; }
.form-field__error {
  font-size: 0.82rem;
  color: var(--color-danger);
  min-height: 1.1em;
  margin: 0;
}
input, select, textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--color-text);
  width: 100%;
}
input[aria-invalid="true"], select[aria-invalid="true"], textarea[aria-invalid="true"] {
  border-color: var(--color-danger);
}

/* ==========================================================================
   17. CTA final / contacto
   ========================================================================== */
.section--cta { background: var(--color-bg-alt); }
.cta-final { text-align: center; margin-bottom: 2.5rem; }
.contact-form {
  max-width: 760px;
  margin: 0 auto;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
  margin-bottom: 1.25rem;
}
@media (min-width: 640px) {
  .form-grid { grid-template-columns: repeat(2, 1fr); }
}
.form-field--checkbox {
  flex-direction: row;
  align-items: flex-start;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}
.form-field--checkbox input { width: auto; margin-top: 0.2rem; }
.form-field--checkbox label { font-weight: 400; }
.honeypot-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  font-size: 0.92rem;
}
.form-status--success { background: rgba(33, 147, 122, 0.12); color: var(--color-success); }
.form-status--error { background: rgba(192, 57, 43, 0.1); color: var(--color-danger); }

/* ==========================================================================
   16. FAQ / acordeón
   ========================================================================== */
.accordion { max-width: 820px; margin: 0 auto; }
.accordion__item { border-bottom: 1px solid var(--color-border); }
.accordion__header { margin: 0; }
.accordion__trigger {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.1rem 0;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.accordion__trigger::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--color-accent-dark);
  flex-shrink: 0;
}
.accordion__trigger[aria-expanded="true"]::after { content: "−"; }
.accordion__panel { padding: 0 0 1.1rem; color: var(--color-text-muted); }

/* ==========================================================================
   18. Footer
   ========================================================================== */
.site-footer {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark-muted);
  padding: 3rem 0 2rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
@media (min-width: 720px) {
  .footer__grid { grid-template-columns: 1.2fr 1fr 1fr; }
}
.footer__brand-name {
  font-family: var(--font-heading);
  color: #fff;
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0.6rem 0 0.3rem;
}
.footer__tagline { margin: 0; font-size: 0.9rem; }
.site-footer h3 { color: #fff; font-size: 0.95rem; margin-bottom: 0.75rem; }
.footer__links ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.5rem; }
.footer__links a, .footer__contact a { color: var(--color-text-on-dark-muted); text-decoration: none; }
.footer__links a:hover, .footer__contact a:hover { color: #fff; }
.footer__legal {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  font-size: 0.8rem;
  line-height: 1.7;
}
.footer__legal-note { font-style: italic; opacity: 0.8; }

/* ==========================================================================
   Utilidades responsive generales
   ========================================================================== */
@media (max-width: 400px) {
  .section { padding: 3rem 0; }
  .calculator, .contact-form { padding: 1.25rem; }
}