/* ─── BASE ─────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green-900: #1B4332;
  --green-800: #2D6A4F;
  --green-600: #40916C;
  --green-400: #52B788;
  --green-200: #95D5B2;
  --green-100: #D8F3DC;
  --green-50: #F0FFF0;
  --white: #FFFFFF;
  --gray-100: #F7F7F7;
  --gray-200: #E8E8E8;
  --gray-400: #A0A0A0;
  --gray-600: #666;
  --gray-900: #222;
  --font: 'Inter', -apple-system, system-ui, sans-serif;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.1);
}

html { scroll-behavior: smooth; font-size: 18px; }

body {
  font-family: var(--font);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { 
  width: 100%; 
  max-width: 1100px; 
  margin: 0 auto; 
  padding: 0 20px; 
}

/* ─── TYPOGRAPHY ────────────────────── */
h1, h2, h3 { line-height: 1.2; font-weight: 700; }
.text--green { color: var(--green-600); }
.text--muted { color: var(--gray-400); font-size: 0.85rem; }

.section__title {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 0.5rem;
  color: var(--green-900);
}
.section__title--white { color: var(--white); }
.section__subtitle {
  text-align: center;
  color: var(--gray-600);
  margin-bottom: 3rem;
  font-size: 1.1rem;
}

/* ─── BUTTONS ───────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  font-size: 1rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font);
}
.btn--small { font-size: 0.85rem; padding: 0.5rem 1.2rem; }
.btn--large { font-size: 1.1rem; padding: 1rem 2.2rem; }
.btn--full { width: 100%; }
.btn--outline {
  background: transparent;
  color: var(--green-800);
  border: 2px solid var(--green-800);
}
.btn--outline:hover { background: var(--green-50); }

.btn:not(.btn--outline) {
  background: var(--green-800);
  color: var(--white);
}
.btn:not(.btn--outline):hover {
  background: var(--green-600);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

/* ─── NAV ───────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  z-index: 100;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--green-100);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav__logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--green-800);
  text-decoration: none;
}
.nav__links { display: flex; align-items: center; gap: 1.5rem; }
.nav__links a:not(.btn) {
  color: var(--gray-600);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
}
.nav__links a:not(.btn):hover { color: var(--green-800); }

/* ─── HERO ───────────────────────────── */
.hero {
  padding: 7rem 0 4rem;
  background: linear-gradient(180deg, var(--green-50) 0%, var(--white) 100%);
  overflow: hidden;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.hero__badge {
  display: inline-block;
  background: var(--green-200);
  color: var(--green-900);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  margin-bottom: 1rem;
}
.hero__title {
  font-size: 2.5rem;
  color: var(--green-900);
  margin-bottom: 1rem;
}
.hero__subtitle {
  font-size: 1.15rem;
  color: var(--gray-600);
  margin-bottom: 2rem;
  max-width: 500px;
}
.hero__cta { display: flex; gap: 1rem; margin-bottom: 2.5rem; flex-wrap: wrap; }
.hero__stats { display: flex; gap: 2rem; }
.stat {
  font-size: 0.9rem;
  color: var(--gray-600);
}
.stat strong { color: var(--green-800); font-size: 1.1rem; }

/* Phone mockup */
.phone-mockup {
  width: 280px;
  background: var(--green-900);
  border-radius: 30px;
  padding: 12px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg);
}
.phone-mockup__header {
  display: flex;
  justify-content: space-between;
  padding: 8px 12px;
  color: var(--green-100);
  font-size: 0.8rem;
}
.phone-mockup__chat {
  background: var(--green-100);
  border-radius: 20px;
  padding: 15px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 300px;
}
.message {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 0.8rem;
  line-height: 1.4;
}
.message--received {
  background: var(--white);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}
.message--sent {
  background: var(--green-400);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}
.phone-mockup__input {
  display: flex;
  justify-content: space-between;
  padding: 10px 12px;
  color: var(--green-200);
  font-size: 0.8rem;
}
.phone-mockup__send { font-size: 1.1rem; }

/* ─── MÓDULOS ───────────────────────── */
.modulos { padding: 5rem 0; }
.modulos__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.modulo-card {
  background: var(--white);
  border: 1px solid var(--green-100);
  border-radius: var(--radius);
  padding: 2rem;
  cursor: pointer;
  transition: all 0.3s;
}
.modulo-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--green-400);
}
.modulo-card__icon { font-size: 2.5rem; margin-bottom: 1rem; }
.modulo-card__title { font-size: 1.3rem; color: var(--green-800); margin-bottom: 0.5rem; }
.modulo-card__desc { font-size: 0.95rem; color: var(--gray-600); margin-bottom: 1rem; }
.modulo-card__features {
  list-style: none;
  font-size: 0.85rem;
  color: var(--gray-600);
}
.modulo-card__features li::before { content: "✓ "; color: var(--green-400); font-weight: 700; }
.modulo-card__features li + li { margin-top: 0.4rem; }

/* ─── WHATSAPP SECTION ──────────────── */
.whatsapp-section {
  background: var(--green-800);
  padding: 5rem 0;
  color: var(--white);
}
.whatsapp-section__content { text-align: center; max-width: 700px; margin: 0 auto; }
.whatsapp-section__text { font-size: 1.1rem; margin-bottom: 2rem; opacity: 0.9; }
.whatsapp-section__features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  text-align: left;
}
.wf {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  background: rgba(255,255,255,0.1);
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
}

/* ─── PRECIOS ────────────────────────── */
.precios { padding: 5rem 0; background: var(--green-50); }
.precios__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 750px;
  margin: 0 auto;
}
.precio-card {
  background: var(--white);
  border: 1px solid var(--green-100);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
}
.precio-card--featured {
  border: 2px solid var(--green-400);
  position: relative;
}
.precio-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--green-400);
  color: white;
  padding: 0.25rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}
.precio-card__title { font-size: 1.2rem; color: var(--gray-600); margin-bottom: 0.5rem; }
.precio-card__price { margin-bottom: 0.5rem; }
.precio-card__amount { font-size: 3rem; font-weight: 800; color: var(--green-800); }
.precio-card__period { font-size: 1rem; color: var(--gray-400); }
.precio-card__save { font-size: 0.85rem; color: var(--green-600); font-weight: 600; margin-bottom: 1rem; }
.precio-card__features {
  list-style: none;
  text-align: left;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}
.precio-card__features li { padding: 0.4rem 0; }

/* ─── REGISTRO ───────────────────────── */
.registro { padding: 5rem 0; }
.registro__card {
  max-width: 480px;
  margin: 0 auto;
  background: var(--white);
  border: 1px solid var(--green-100);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow);
}
.form { display: flex; flex-direction: column; gap: 1.2rem; }
.form__group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.form__group label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--green-900);
}
.form__group input {
  padding: 0.8rem 1rem;
  border: 1px solid var(--green-200);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: var(--font);
  transition: border-color 0.2s;
}
.form__group input:focus {
  outline: none;
  border-color: var(--green-400);
  box-shadow: 0 0 0 3px rgba(82,183,136,0.15);
}
.form__disclaimer {
  font-size: 0.8rem;
  color: var(--gray-400);
  text-align: center;
}
.form__disclaimer a { color: var(--green-600); }
.form-success { text-align: center; padding: 2rem 0; }
.form-success__icon { font-size: 3rem; margin-bottom: 1rem; }
.form-success h3 { color: var(--green-800); margin-bottom: 0.5rem; }
.form-error {
  background: #FFF0F0;
  border: 1px solid #FFC0C0;
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  color: #C00;
  text-align: center;
  font-size: 0.9rem;
}
.registro__login {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--gray-600);
}
.registro__login a { color: var(--green-600); font-weight: 600; cursor: pointer; }

/* ─── FOOTER ─────────────────────────── */
.footer {
  background: var(--green-900);
  color: var(--green-200);
  padding: 3rem 0;
  font-size: 0.9rem;
}
.footer__inner { display: flex; flex-direction: column; gap: 1rem; text-align: center; }
.footer__brand strong { font-size: 1.1rem; color: var(--white); }
.footer__links { display: flex; gap: 1.5rem; justify-content: center; }
.footer__links a { color: var(--green-200); text-decoration: none; }
.footer__links a:hover { color: var(--white); }
.footer__copy { opacity: 0.7; font-size: 0.8rem; }

/* ─── RESPONSIVE ─────────────────────── */
@media (max-width: 850px) {
  html { font-size: 16px; }
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero__subtitle { margin: 0 auto 2rem; }
  .hero__cta { justify-content: center; }
  .hero__stats { justify-content: center; }
  .hero__image { display: none; }
  .modulos__grid { grid-template-columns: 1fr; }
  .precios__grid { grid-template-columns: 1fr; }
  .whatsapp-section__features { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .nav__links a:not(.btn) { display: none; }
  .section__title { font-size: 1.5rem; }
  .hero__title { font-size: 1.8rem; }
  .registro__card { padding: 1.5rem; }
}