/* ============================
   CSS VARIABLES & RESET
   ============================ */
:root {
  --green-primary: #25D366;
  --green-dark: #128C7E;
  --green-light: #DCF8C6;
  --green-xlight: #e9fbe3;
  --white: #FFFFFF;
  --gray-light: #F0F2F5;
  --gray-mid: #e0e0e0;
  --text-dark: #1A1A1A;
  --text-mid: #4A4A4A;
  --text-light: #6B7280;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.15);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --transition: 0.3s ease;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: var(--font); cursor: pointer; border: none; background: none; }

/* ============================
   CONTAINER
   ============================ */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ============================
   TYPOGRAPHY
   ============================ */
h1 { font-size: clamp(2rem, 5vw, 3.25rem); font-weight: 800; line-height: 1.1; }
h2 { font-size: clamp(1.6rem, 4vw, 2.5rem); font-weight: 700; line-height: 1.2; }
h3 { font-size: 1.2rem; font-weight: 600; }
p  { color: var(--text-mid); }

.highlight {
  color: var(--green-primary);
  position: relative;
}

/* ============================
   BUTTONS
   ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }

.btn-lg { padding: 1rem 2rem; font-size: 1rem; }
.btn-full { width: 100%; justify-content: center; }

.btn-primary {
  background: var(--green-primary);
  color: white;
  box-shadow: 0 4px 16px rgba(37,211,102,0.4);
}
.btn-primary:hover { background: #20c05a; box-shadow: 0 6px 20px rgba(37,211,102,0.5); }

.btn-outline {
  background: transparent;
  color: var(--green-dark);
  border: 2px solid var(--green-dark);
}
.btn-outline:hover { background: var(--green-xlight); }

.btn-white {
  background: white;
  color: var(--green-dark);
  box-shadow: var(--shadow-sm);
}
.btn-white:hover { background: var(--gray-light); }

.btn-nav {
  background: var(--green-primary);
  color: white;
  padding: 0.5rem 1.25rem;
}

/* ============================
   BADGE
   ============================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--green-light);
  color: var(--green-dark);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
}
.badge-outline {
  background: transparent;
  border: 2px solid var(--green-primary);
  color: var(--green-dark);
}

/* ============================
   NAVBAR
   ============================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0.25rem 0;
  transition: background var(--transition), box-shadow var(--transition);
}
.navbar.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo { display: flex; align-items: center; }
.nav-logo img { height: 80px; width: auto; object-fit: contain; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-weight: 500;
  color: var(--text-dark);
  transition: color var(--transition);
  font-size: 0.95rem;
}
.nav-links a:hover { color: var(--green-primary); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================
   SECTIONS
   ============================ */
.section {
  padding: 6rem 0;
}
.section-gray { background: var(--gray-light); }
.section-dark  { background: var(--green-dark); color: white; }
.section-dark p { color: rgba(255,255,255,0.85); }

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}
.section-header h2 { margin-bottom: 1rem; }
.section-header p  { font-size: 1.1rem; }

/* ============================
   HERO
   ============================ */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #128C7E 0%, #1da462 50%, #25D366 100%);
  display: flex;
  flex-direction: column;
  position: relative;
  padding-top: 5rem;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  flex: 1;
  padding: 4rem 1.5rem 6rem;
  max-width: 1160px;
  margin: 0 auto;
  width: 100%;
}

.hero-text { color: white; }
.hero-text .badge { background: rgba(255,255,255,0.2); color: white; }
.hero-text h1 { color: white; margin-bottom: 1.25rem; }
.hero-sub { font-size: 1.15rem; color: rgba(255,255,255,0.9); margin-bottom: 2rem; max-width: 520px; }

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}
.hero-actions .btn-primary {
  background: white;
  color: var(--green-dark);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.hero-actions .btn-primary:hover { background: var(--green-xlight); }
.hero-actions .btn-outline {
  border-color: rgba(255,255,255,0.8);
  color: white;
}
.hero-actions .btn-outline:hover { background: rgba(255,255,255,0.1); }

.hero-trust {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: rgba(255,255,255,0.9);
  font-size: 0.9rem;
  font-weight: 500;
}
.trust-item svg { flex-shrink: 0; }

.hero-wave {
  line-height: 0;
}
.hero-wave svg { width: 100%; height: 80px; }

/* ============================
   PHONE MOCKUP
   ============================ */
.hero-visual {
  display: flex;
  justify-content: center;
}

.phone-mockup { perspective: 1000px; }

.phone-frame {
  width: 280px;
  background: #1f1f1f;
  border-radius: 36px;
  padding: 12px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.1);
  transform: rotateY(-8deg) rotateX(4deg);
  transition: transform 0.5s ease;
}
.phone-frame:hover { transform: rotateY(0deg) rotateX(0deg); }

.phone-notch {
  width: 80px;
  height: 6px;
  background: #333;
  border-radius: 3px;
  margin: 0 auto 10px;
}

.chat-window {
  background: #E5DDD5;
  border-radius: 24px;
  overflow: hidden;
  min-height: 420px;
  display: flex;
  flex-direction: column;
}

.chat-header {
  background: var(--green-dark);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.chat-avatar {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.chat-name { color: white; font-size: 0.9rem; font-weight: 600; display: block; }
.chat-status { color: rgba(255,255,255,0.8); font-size: 0.75rem; }

.chat-messages {
  padding: 1rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  height: 360px;
  overflow: hidden; /* burbujas aparecen sin mover la página */
}

/* ============================
   CHAT BUBBLES
   ============================ */
.bubble {
  max-width: 80%;
  padding: 0.5rem 0.75rem;
  border-radius: 12px;
  font-size: 0.8rem;
  line-height: 1.4;
  position: relative;
  animation: bubbleIn 0.3s ease;
}
.bubble-sent {
  background: var(--green-light);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}
.bubble-received {
  background: white;
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}
.bubble-time {
  font-size: 0.65rem;
  color: #999;
  text-align: right;
  margin-top: 2px;
}

.typing-indicator {
  background: white;
  align-self: flex-start;
  padding: 0.5rem 0.75rem;
  border-radius: 12px;
  border-bottom-left-radius: 4px;
  display: flex;
  gap: 4px;
  align-items: center;
}
.typing-dot {
  width: 7px;
  height: 7px;
  background: #aaa;
  border-radius: 50%;
  animation: typingBounce 1.2s infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

/* ============================
   PROBLEM SECTION
   ============================ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.problem-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.problem-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.problem-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.problem-card h3 { margin-bottom: 0.5rem; color: var(--text-dark); }

/* ============================
   SOLUTION SECTION
   ============================ */
.solution-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.solution-text .badge { margin-bottom: 1rem; }
.solution-text h2 { margin-bottom: 1rem; }
.solution-text > p { margin-bottom: 1.5rem; font-size: 1.05rem; }

.solution-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.solution-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--text-mid);
  line-height: 1.5;
}
.solution-list svg { flex-shrink: 0; margin-top: 2px; }

.solution-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.whatsapp-big-icon {
  width: 140px;
  height: 140px;
  background: linear-gradient(135deg, var(--green-primary), var(--green-dark));
  border-radius: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
}

.solution-plus {
  font-size: 2rem;
  color: var(--green-primary);
  font-weight: 700;
}

.calendar-icon {
  width: 110px;
  height: 110px;
  background: linear-gradient(135deg, #4285F4, #1a73e8);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

/* ============================
   FEATURES GRID
   ============================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: white;
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid transparent;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--green-light);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}
.feature-card h3 { margin-bottom: 0.5rem; }

/* ============================
   HOW IT WORKS
   ============================ */
.steps-row {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 4rem;
}

.step {
  flex: 1;
  max-width: 260px;
  text-align: center;
  padding: 2rem 1.5rem;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  position: relative;
}
.step-number {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 28px;
  background: var(--green-primary);
  color: white;
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.step h3 { margin-bottom: 0.5rem; }

.step-arrow {
  font-size: 1.5rem;
  color: var(--green-primary);
  margin-top: 3.5rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ============================
   CHAT DEMO
   ============================ */
.chat-demo-wrapper {
  max-width: 400px;
  margin: 0 auto;
}

.chat-demo-phone {
  background: #E5DDD5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.chat-demo-header {
  background: var(--green-dark);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.demo-avatar {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.demo-name { color: white; font-weight: 600; font-size: 0.95rem; }
.demo-online { color: rgba(255,255,255,0.8); font-size: 0.78rem; }

.chat-demo-messages {
  padding: 1.25rem 1rem;
  height: 280px;
  overflow: hidden; /* altura fija, las burbujas no empujan la página */
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

/* ============================
   PRICING
   ============================ */
.promo-banner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: linear-gradient(135deg, var(--green-dark), var(--green-primary));
  color: white;
  border-radius: var(--radius-md);
  padding: 1.5rem 2rem;
  margin-bottom: 3rem;
  box-shadow: 0 4px 20px rgba(37,211,102,0.3);
}
.promo-icon { font-size: 2.5rem; flex-shrink: 0; }
.promo-text { display: flex; flex-direction: column; gap: 0.25rem; }
.promo-text strong { font-size: 1.1rem; letter-spacing: 0.5px; }
.promo-text span { font-size: 0.95rem; opacity: 0.9; }

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto 2rem;
}

.pricing-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  position: relative;
  border: 2px solid transparent;
  transition: transform var(--transition);
}
.pricing-card:hover { transform: translateY(-4px); }

.pricing-featured {
  background: linear-gradient(135deg, var(--green-dark), var(--green-primary));
  color: white;
  border: none;
}
.pricing-featured h3,
.pricing-featured p { color: white; }

.pricing-badge {
  display: inline-block;
  padding: 0.3rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--green-light);
  color: var(--green-dark);
  margin-bottom: 1rem;
}
.featured-badge { background: rgba(255,255,255,0.25); color: white; }

.pricing-icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.pricing-card h3 { font-size: 1.5rem; margin-bottom: 1rem; }

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}
.price-amount {
  font-size: 3rem;
  font-weight: 800;
  color: var(--green-dark);
  line-height: 1;
}
.pricing-featured .price-amount { color: white; }
.price-unit { font-size: 1rem; color: var(--text-light); }
.pricing-featured .price-unit { color: rgba(255,255,255,0.8); }

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.pricing-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--text-mid);
}
.pricing-featured .pricing-features li { color: rgba(255,255,255,0.9); }

.pricing-note {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-light);
}

/* ============================
   FAQ
   ============================ */
.faq-container { max-width: 760px; }

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border: 1px solid var(--gray-mid);
  transition: border-color var(--transition);
}
.faq-item:has(.faq-question[aria-expanded="true"]) { border-color: var(--green-primary); }

.faq-question {
  width: 100%;
  text-align: left;
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-dark);
  transition: background var(--transition);
}
.faq-question:hover { background: var(--gray-light); }

.faq-icon {
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--green-primary);
}
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(180deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-answer.open { max-height: 300px; }
.faq-answer p { padding: 0 1.5rem 1.25rem; font-size: 0.95rem; }

/* ============================
   CONTACT
   ============================ */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.contact-text h2 { color: white; margin-bottom: 1rem; }

.contact-form-wrapper {
  background: white;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dark);
}
.form-group input {
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--gray-mid);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--text-dark);
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus { border-color: var(--green-primary); }
.form-group input::placeholder { color: #aaa; }

.form-disclaimer {
  font-size: 0.8rem;
  text-align: center;
  margin-top: -0.5rem;
}
.form-disclaimer a { color: var(--green-primary); text-decoration: underline; }

.form-success {
  text-align: center;
  padding: 2rem;
}
.success-icon { font-size: 3rem; margin-bottom: 1rem; }
.form-success h3 { color: var(--green-dark); margin-bottom: 0.5rem; }

/* ============================
   FOOTER
   ============================ */
.footer {
  background: #0d1117;
  color: rgba(255,255,255,0.7);
  padding: 3rem 0 2rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}

.footer-brand img { margin: 0 auto 0.75rem; height: 160px; width: auto; object-fit: contain; }
.footer-brand p { font-size: 0.9rem; }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}
.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 0.88rem;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--green-primary); }

.footer-copy {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
}


/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 2rem 1.5rem 4rem;
  }
  .hero-actions { justify-content: center; }
  .hero-trust { justify-content: center; }
  .hero-visual { display: none; }

  .solution-inner { grid-template-columns: 1fr; }
  .solution-icon { flex-direction: row; }

  .cards-grid,
  .features-grid { grid-template-columns: 1fr; }

  .steps-row { flex-direction: column; align-items: center; }
  .step-arrow { transform: rotate(90deg); margin: 0; }

  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; }

  .contact-inner { grid-template-columns: 1fr; }
  .contact-text { text-align: center; }
}

@media (max-width: 640px) {
  .section { padding: 4rem 0; }

  .nav-links {
    display: none;
    position: fixed;
    inset: 0;
    background: white;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    font-size: 1.25rem;
    z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; z-index: 1000; }

  .promo-banner { flex-direction: column; text-align: center; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; justify-content: center; }

  .section-header { margin-bottom: 2.5rem; }

  .features-grid { grid-template-columns: 1fr; }
}