/* Variables y reset */
:root {
  --sf-navy: #28324e;
  --sf-dark: #506bf2;
  --sf-blue: #506bf2;
  --sf-sky: #7a8ff5;
  --sf-cyan: #ffaa00;
  --sf-magenta: #ff00ff;
  --sf-white: #FFFFFF;
  --sf-light: #F7F9FA;
  --sf-gray: #687173;
  --sf-dark-text: #2C2E2F;
  --sf-border: #E5E9EB;
  --sf-success: #0A8064;
  --sf-danger: #D7373F;
  --sf-warning: #F7B600;
  --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 8px 24px rgba(40,50,78,0.12);
  --shadow-lg: 0 18px 45px rgba(40,50,78,0.18);
  --radius: 16px;
  --radius-sm: 10px;
  --max-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

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

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(92%, var(--max-width));
  margin-inline: auto;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--sf-blue), var(--sf-sky));
  color: var(--sf-white);
  box-shadow: 0 6px 20px rgba(80,107,242,0.35);
}

.btn-primary:hover {
  box-shadow: 0 10px 28px rgba(80,107,242,0.45);
}

.btn-outline-light {
  background: transparent;
  color: var(--sf-white);
  border-color: rgba(255,255,255,0.45);
}

.btn-outline-light:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.7);
}

.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.88rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.05rem;
}

.btn-whatsapp {
  background: #25D366;
  color: var(--sf-white);
}

.btn-whatsapp:hover {
  background: #1ebe5a;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(0,0,0,0.05);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

.header.scrolled {
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--sf-navy);
}

.logo-img {
  height: 44px;
  width: auto;
  display: block;
}

.logo-accent {
  color: var(--sf-blue);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.nav a:not(.btn) {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--sf-dark-text);
  position: relative;
}

.nav a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--sf-blue);
  transition: width 0.25s ease;
}

.nav a:not(.btn):hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--sf-navy);
  cursor: pointer;
}

/* Hero */
.hero {
  position: relative;
  padding: 150px 0 100px;
  background: linear-gradient(135deg, var(--sf-navy) 0%, var(--sf-dark) 40%, var(--sf-blue) 100%);
  color: var(--sf-white);
  overflow: hidden;
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 30%, rgba(122,143,245,0.25), transparent 45%),
              radial-gradient(circle at 80% 70%, rgba(255,170,0,0.14), transparent 40%);
  animation: heroPulse 8s ease-in-out infinite alternate;
}

@keyframes heroPulse {
  from { opacity: 0.7; transform: scale(1); }
  to { opacity: 1; transform: scale(1.05); }
}

.hero-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.35;
  animation: float 10s ease-in-out infinite;
}

.shape-1 {
  width: 340px;
  height: 340px;
  background: var(--sf-sky);
  top: -80px;
  right: -60px;
  animation-delay: 0s;
}

.shape-2 {
  width: 260px;
  height: 260px;
  background: var(--sf-cyan);
  bottom: 60px;
  left: -80px;
  animation-delay: -4s;
}

.shape-3 {
  width: 180px;
  height: 180px;
  background: var(--sf-blue);
  top: 40%;
  right: 18%;
  animation-delay: -2s;
  opacity: 0.25;
}

@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-25px) translateX(15px); }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 880px;
}

.hero-brand {
  width: 110px;
  height: auto;
  margin: 0 auto 1.4rem;
  filter: drop-shadow(0 8px 20px rgba(0,0,0,0.25));
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.18);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.4rem;
  backdrop-filter: blur(4px);
}

.badge-icon {
  color: var(--sf-cyan);
}

.hero-title {
  font-size: clamp(2.1rem, 5.5vw, 3.6rem);
  line-height: 1.12;
  font-weight: 800;
  margin-bottom: 1.2rem;
  letter-spacing: -0.02em;
}

.text-highlight {
  background: linear-gradient(90deg, var(--sf-cyan), #ffe194);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: rgba(255,255,255,0.86);
  max-width: 720px;
  margin: 0 auto 1.6rem;
  line-height: 1.55;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.7rem;
  margin-bottom: 2rem;
}

.mini-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.hero-note {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  margin-top: 0.6rem;
}

.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  line-height: 0;
}

.hero-wave svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Secciones */
.section-light {
  background: var(--sf-light);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.2rem;
}

.section-tag {
  display: inline-block;
  color: var(--sf-blue);
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.7rem;
}

.section-title {
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--sf-navy);
  line-height: 1.18;
  margin-bottom: 0.8rem;
}

.section-desc {
  color: var(--sf-gray);
  font-size: 1.05rem;
}

/* Trust */
.trust {
  padding: 80px 0 60px;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.trust-card {
  background: var(--sf-white);
  border: 1px solid var(--sf-border);
  border-radius: var(--radius);
  padding: 2rem 1.6rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.trust-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.trust-icon {
  width: 58px;
  height: 58px;
  margin: 0 auto 1.1rem;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(80,107,242,0.1), rgba(122,143,245,0.1));
  color: var(--sf-blue);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
}

.trust-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--sf-navy);
  margin-bottom: 0.45rem;
}

.trust-card p {
  font-size: 0.94rem;
  color: var(--sf-gray);
}

/* Benefits */
.benefits {
  padding: 90px 0;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
}

.benefit-card {
  background: var(--sf-white);
  border: 1px solid var(--sf-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.benefit-card:hover {
  transform: translateY(-7px);
  box-shadow: var(--shadow);
  border-color: rgba(80,107,242,0.25);
}

.benefit-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--sf-blue), var(--sf-sky));
  color: var(--sf-white);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  margin-bottom: 1.2rem;
}

.benefit-card h3 {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--sf-navy);
  margin-bottom: 0.5rem;
}

.benefit-card p {
  font-size: 0.94rem;
  color: var(--sf-gray);
}

/* How it works */
.how-it-works {
  padding: 90px 0;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  counter-reset: step;
}

.step {
  position: relative;
  background: var(--sf-white);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  border: 1px solid var(--sf-border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.step:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.step-number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--sf-blue), var(--sf-sky));
  color: var(--sf-white);
  font-weight: 800;
  display: grid;
  place-items: center;
  margin-bottom: 1.2rem;
}

.step h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--sf-navy);
  margin-bottom: 0.5rem;
}

.step p {
  font-size: 0.93rem;
  color: var(--sf-gray);
}

/* Comparison */
.comparison {
  padding: 90px 0;
}

.comparison-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: var(--sf-white);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

.comparison-table th,
.comparison-table td {
  padding: 1.1rem 1.4rem;
  text-align: left;
  border-bottom: 1px solid var(--sf-border);
}

.comparison-table thead th {
  background: var(--sf-navy);
  color: var(--sf-white);
  font-weight: 700;
  font-size: 0.95rem;
}

.comparison-table thead th:first-child {
  border-radius: var(--radius) 0 0 0;
}

.comparison-table thead th:last-child {
  border-radius: 0 var(--radius) 0 0;
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.comparison-table tbody tr:hover {
  background: rgba(80,107,242,0.03);
}

.col-other {
  color: var(--sf-gray);
}

.col-sf {
  background: rgba(80,107,242,0.05);
  font-weight: 600;
  color: var(--sf-navy);
}

.comparison-table i {
  margin-right: 0.4rem;
}

.good { color: var(--sf-success); }
.bad { color: var(--sf-danger); }
.mid { color: var(--sf-warning); }

/* Saving */
.saving {
  padding: 90px 0;
  background: linear-gradient(135deg, var(--sf-navy), var(--sf-dark));
  color: var(--sf-white);
}

.saving-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.saving-text h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.18;
  margin-bottom: 1rem;
}

.saving-text p {
  color: rgba(255,255,255,0.85);
  font-size: 1.05rem;
  margin-bottom: 1.6rem;
  line-height: 1.6;
}

.saving-visual {
  display: flex;
  gap: 1.2rem;
  justify-content: center;
  align-items: center;
}

.saving-card {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  min-width: 160px;
  backdrop-filter: blur(6px);
  transition: transform 0.3s ease;
}

.saving-card:hover {
  transform: translateY(-6px);
}

.saving-card i {
  font-size: 2rem;
  color: var(--sf-cyan);
  margin-bottom: 0.6rem;
}

.saving-number {
  display: block;
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1;
}

.saving-label {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.75);
}

.saving-card-offset {
  margin-top: 2.5rem;
}

/* CTA */
.cta {
  padding: 80px 0;
}

.cta-inner {
  background: var(--sf-white);
  border: 1px solid var(--sf-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 3rem 2rem;
  text-align: center;
}

.cta-inner h2 {
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  font-weight: 800;
  color: var(--sf-navy);
  margin-bottom: 0.7rem;
}

.cta-inner p {
  color: var(--sf-gray);
  font-size: 1.05rem;
  margin-bottom: 1.6rem;
}

.cta-phone {
  display: block;
  margin-top: 1rem;
  font-weight: 700;
  color: var(--sf-navy);
}

.cta-phone i {
  color: var(--sf-blue);
}

/* FAQ */
.faq {
  padding: 90px 0;
}

.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--sf-white);
  border: 1px solid var(--sf-border);
  border-radius: var(--radius-sm);
  padding: 1.2rem 1.4rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease;
}

.faq-item:hover {
  box-shadow: var(--shadow);
}

.faq-item summary {
  font-weight: 700;
  color: var(--sf-navy);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--sf-blue);
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  margin-top: 0.8rem;
  color: var(--sf-gray);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Footer */
.footer {
  background: var(--sf-navy);
  color: var(--sf-white);
  padding-top: 60px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 50px;
}

.footer-brand .logo {
  color: var(--sf-white);
  margin-bottom: 1rem;
}

.footer-brand p {
  color: rgba(255,255,255,0.75);
  font-size: 0.95rem;
  max-width: 320px;
}

.footer-contact h4,
.footer-links h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-contact p,
.footer-links a {
  display: block;
  color: rgba(255,255,255,0.75);
  font-size: 0.94rem;
  margin-bottom: 0.55rem;
  transition: color 0.2s ease;
}

.footer-links a:hover,
.footer-contact a:hover {
  color: var(--sf-cyan);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 1.2rem 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
}

.footer-bottom a {
  color: rgba(255,255,255,0.85);
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

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

/* Responsive */
@media (max-width: 980px) {
  .trust-grid,
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .saving-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .saving-visual {
    justify-content: center;
  }
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .menu-toggle {
    display: block;
  }
  .nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--sf-white);
    flex-direction: column;
    align-items: stretch;
    padding: 1.2rem 1.5rem;
    gap: 1rem;
    box-shadow: var(--shadow);
    transform: translateY(-150%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s ease, opacity 0.35s ease;
  }
  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .nav a {
    padding: 0.6rem 0;
  }
  .nav .btn {
    width: 100%;
  }
  .trust-grid,
  .benefits-grid,
  .steps {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }
  .footer-brand p {
    max-width: none;
  }
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  .hero-badges {
    flex-direction: column;
    align-items: center;
  }
}