:root {
  /* Stripe-like Color Palette */
  --primary: #0066ff;
  --primary-hover: #0052cc;
  --primary-light: #e6f0ff;
  
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #94a3b8;
  
  --border-color: #e2e8f0;
  
  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  
  /* Shadows & Transitions */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -2px rgba(0,0,0,0.025);
  --shadow-hover: 0 20px 25px -5px rgba(0,0,0,0.05), 0 10px 10px -5px rgba(0,0,0,0.02);
  
  --radius-md: 12px;
  --radius-lg: 24px;
  --radius-pill: 9999px;
  
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-muted);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  line-height: 1.2;
  font-weight: 700;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn--primary {
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 14px 0 rgba(0, 102, 255, 0.25);
}

.btn--primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 102, 255, 0.23);
}

.btn--outline {
  background-color: var(--bg-card);
  color: var(--text-main);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.btn--outline:hover {
  border-color: var(--text-light);
  background-color: var(--bg-main);
  transform: translateY(-2px);
}

.btn--block {
  width: 100%;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: var(--transition);
  background-color: transparent;
}

.header.scrolled {
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.logo__text {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.nav__link:hover {
  color: var(--primary);
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.burger span {
  width: 24px;
  height: 2px;
  background-color: var(--text-main);
  transition: var(--transition);
}

.section {
  padding: 6rem 0;
}

.section__head {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem auto;
}

.section__title {
  font-size: 2.5rem;
  letter-spacing: -1px;
  margin-bottom: 1rem;
}

.hero {
  padding: 10rem 0 6rem 0;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #ffffff 0%, var(--bg-main) 100%);
}

.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--primary-light) 0%, transparent 70%);
  opacity: 0.6;
  z-index: 0;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 800px;
}

.hero__title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin: 1.5rem 0;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, #00d2ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__text {
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto 2.5rem auto;
  color: var(--text-muted);
}

.hero__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.plans {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.plan-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

.plan-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-5px);
  border-color: var(--primary-light);
}

.plan-card--featured {
  border: 2px solid var(--primary);
}

.plan-tag {
  position: absolute;
  top: -12px;
  right: 2rem;
  background-color: var(--primary);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.plan-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.plan-price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 1rem 0;
  line-height: 1;
}

.plan-terms {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 1.5rem;
}

.plan-features {
  margin-bottom: 2.5rem;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.plan-features svg {
  flex-shrink: 0;
  color: var(--primary);
  margin-top: 3px;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.process-step {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.process-num {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  background-color: var(--primary-light);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1rem;
}

.process-step h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.contact-info {
  background-color: var(--bg-main);
  padding: 3rem;
  border-right: 1px solid var(--border-color);
}

.contact-form {
  padding: 3rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
  background-color: var(--bg-main);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
  background-color: var(--bg-card);
}

.footer {
  border-top: 1px solid var(--border-color);
  padding: 3rem 0;
  background-color: var(--bg-card);
  text-align: center;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: calc(var(--delay, 0) * 100ms);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Logo */
.logo__icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.footer .logo__icon {
  width: 28px;
  height: 28px;
}

.nav__link.is-active {
  color: var(--primary);
}

/* Promesas del hero */
.hero__stats {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem 3rem;
  margin-top: 3rem;
}

.hero__stats li {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__stats strong {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.5px;
}

.hero__stats span {
  font-size: 0.85rem;
}

/* Extras de los planes */
.plan-extra {
  margin-top: 1rem;
  font-size: 0.85rem;
  text-align: center;
  color: var(--text-muted);
}

.plan-note {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  max-width: 900px;
  margin: 1.5rem auto 0;
  padding: 1.25rem 1.5rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
}

.plan-note svg {
  flex-shrink: 0;
  color: var(--primary);
  margin-top: 2px;
}

.plan-note strong {
  color: var(--text-main);
}

/* Contacto */
.contact-list {
  margin-bottom: 2rem;
}

.contact-list li {
  margin-bottom: 1.5rem;
}

.contact-list strong {
  display: block;
  color: var(--text-main);
}

.contact-list a {
  color: var(--primary);
  word-break: break-word;
}

.btn--whatsapp {
  background-color: #25d366;
  color: #ffffff;
  box-shadow: 0 4px 14px 0 rgba(37, 211, 102, 0.25);
}

.btn--whatsapp:hover {
  background-color: #1ebe5a;
  transform: translateY(-2px);
}

/* Formulario: errores y avisos */
.form-group.has-error .form-input {
  border-color: #dc2626;
}

.field__error {
  margin-top: 0.35rem;
  font-size: 0.8rem;
  color: #dc2626;
}

.form__note {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  text-align: center;
  color: var(--text-light);
}

.alert {
  display: none;
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
}

.alert.is-visible {
  display: block;
}

.alert--ok {
  background-color: #ecfdf5;
  color: #047857;
  border: 1px solid #a7f3d0;
}

.alert--error {
  background-color: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

body.is-locked {
  overflow: hidden;
}

@media (max-width: 992px) {
  .plans, .process-grid, .contact-grid {
    grid-template-columns: 1fr;
  }
  .contact-info {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 760px) {
  .nav__list {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-card);
    flex-direction: column;
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
  }
  .nav__list.active {
    display: flex;
  }
  .burger {
    display: flex;
  }
  .hero {
    padding: 8rem 0 4rem 0;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    gap: 0;
  }
  .contact-form, .contact-info {
    padding: 1.5rem;
  }
  .section__title {
    font-size: 2rem;
  }
}

@media (max-width: 420px) {
  .container {
    padding: 0 1rem;
  }
  .plan-card {
    padding: 1.75rem;
  }
  .plan-price {
    font-size: 2.5rem;
  }
  .hero__actions .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}