/* NIIF Inteligente — landing styles */
:root {
  --black: #0A0A0A;
  --yellow: #FFD100;
  --white: #FFFFFF;
  --surface: #F5F5F2;
  --muted: #777777;
  --card-dark: #1A1A1A;
  --display: 'Barlow Condensed', 'Helvetica Neue', sans-serif;
  --body: 'Barlow', 'Helvetica Neue', sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--black);
  color: var(--white);
  font-family: var(--body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  font-size: 16px;
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; }

::selection { background: var(--yellow); color: var(--black); }

.display {
  font-family: var(--display);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 0.95;
}

.section-tag {
  display: inline-block;
  font-family: var(--display);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 6px 12px;
}
.section-tag.dark { background: var(--yellow); color: var(--black); }
.section-tag.light { background: var(--black); color: var(--yellow); }

.cta {
  font-family: var(--display);
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--yellow);
  color: var(--black);
  padding: 14px 32px;
  border-radius: 4px;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: transform .18s ease, background .18s ease;
}
.cta:hover { transform: translateY(-2px); background: #FFDC33; }
.cta .arrow { display: inline-block; transition: transform .2s ease; }
.cta:hover .arrow { transform: translateX(4px); }

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .8s cubic-bezier(.22,.61,.36,1), transform .8s cubic-bezier(.22,.61,.36,1);
}
.reveal.in { opacity: 1; transform: translateY(0); }

/* Sound wave equalizer */
.wave {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
  height: 60px;
  width: 100%;
}
.wave .bar {
  width: 3px;
  background: var(--yellow);
  border-radius: 3px;
  height: 6px;
  animation: waveEq 1.3s ease-in-out infinite;
  transform-origin: center;
}
@keyframes waveEq {
  0%, 100% { height: 6px; opacity: 0.25; }
  50% { height: var(--bar-h, 30px); opacity: 1; }
}

/* Sticky mobile CTA */
.sticky-cta {
  position: fixed;
  left: 50%;
  bottom: 20px;
  transform: translateX(-50%) translateY(120%);
  background: var(--yellow);
  color: var(--black);
  font-family: var(--display);
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 14px 28px;
  border-radius: 4px;
  z-index: 60;
  font-size: 14px;
  transition: transform .35s cubic-bezier(.22,.61,.36,1);
  box-shadow: 0 4px 0 0 var(--black);
  white-space: nowrap;
}
.sticky-cta.show { transform: translateX(-50%) translateY(0); }

/* Navbar */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: var(--black);
  z-index: 50;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-links {
  display: flex;
  gap: 32px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.nav-links a {
  color: rgba(255,255,255,0.5);
  transition: color .18s ease;
}
.nav-links a:hover { color: var(--yellow); }

.logo {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--display);
  font-weight: 900;
  font-size: 22px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.logo .reto { color: var(--white); }
.logo .niif {
  background: var(--yellow);
  color: var(--black);
  padding: 2px 8px 1px;
  border-radius: 2px;
}

/* Section base */
section {
  position: relative;
  padding: 110px 32px;
}
.container {
  max-width: 1180px;
  margin: 0 auto;
}

/* Hero */
.hero {
  min-height: 100vh;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.hero-video-wrap {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.hero-video-wrap video,
.hero-video-wrap img.poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform-origin: center center;
  will-change: transform;
}
.hero-video-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.55);
}
.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 1100px;
  width: 100%;
  padding: 140px 0 0;
  will-change: transform, opacity;
}
.hero h1 {
  margin: 24px auto 22px;
  max-width: 1080px;
  font-size: clamp(3rem, 7.4vw, 6.4rem);
  line-height: 1.05;
}
.hero h1 .yellow { color: var(--yellow); display: block; margin-bottom: 0.12em; }
.hero h1 .white { color: var(--white); display: block; }
.hero p.sub {
  font-size: 15px;
  font-weight: 400;
  color: rgba(255,255,255,0.55);
  max-width: 560px;
  margin: 0 auto 30px;
  line-height: 1.65;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--yellow);
  color: var(--black);
  font-family: var(--display);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: 0.18em;
  padding: 7px 14px;
  text-transform: uppercase;
  border-radius: 2px;
}
.badge .dot {
  width: 6px; height: 6px;
  background: var(--black);
  border-radius: 50%;
  display: inline-block;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 48px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  border-top: 1px solid rgba(255,255,255,0.12);
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.hero-stats .cell {
  padding: 18px 8px;
  text-align: center;
  border-right: 1px solid rgba(255,255,255,0.08);
}
.hero-stats .cell:last-child { border-right: none; }
.hero-stats .v {
  font-family: var(--display);
  font-weight: 900;
  color: var(--yellow);
  font-size: 28px;
  line-height: 1;
}
.hero-stats .l {
  font-family: var(--display);
  font-weight: 700;
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  margin-top: 6px;
}

.hero-wave-foot {
  position: absolute;
  left: 0; right: 0;
  bottom: -28px;
  z-index: 5;
  padding: 0 32px;
}

/* Problema */
.problema {
  background: var(--black);
  text-align: center;
}
.problema-inner {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}
.problema h2 {
  font-size: clamp(2.6rem, 5vw, 4rem);
  color: var(--white);
  margin: 22px 0 18px;
}
.problema .lead {
  color: rgba(255,255,255,0.45);
  font-size: 17px;
  max-width: 580px;
  margin: 0 auto 48px;
  line-height: 1.6;
}
.pain-list {
  display: grid;
  gap: 14px;
  text-align: left;
}
.pain {
  border-left: 3px solid var(--yellow);
  background: rgba(255,255,255,0.04);
  padding: 22px 24px;
  font-family: var(--display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 18px;
}
.pain .num {
  font-family: var(--display);
  color: var(--yellow);
  font-size: 14px;
  letter-spacing: 0.18em;
}
.problema-bg-wave {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0.08;
  pointer-events: none;
  padding: 0 32px;
}

/* Solución */
.solucion {
  background: var(--white);
  color: var(--black);
}
.solucion .head {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin-bottom: 56px;
  max-width: 760px;
}
.solucion h2 {
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  margin: 18px 0 16px;
}
.solucion .lead {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.6;
}
.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card-feature {
  background: var(--surface);
  border-top: 3px solid var(--yellow);
  padding: 36px 28px 32px;
  position: relative;
  min-height: 320px;
  display: flex;
  flex-direction: column;
}
.card-feature .num {
  font-family: var(--display);
  font-weight: 900;
  font-size: 100px;
  color: rgba(255, 209, 0, 0.18);
  line-height: 1;
  margin-bottom: 14px;
}
.card-feature h3 {
  font-family: var(--display);
  font-weight: 900;
  text-transform: uppercase;
  font-size: 26px;
  margin: 0 0 12px;
  color: var(--black);
  letter-spacing: -0.005em;
}
.card-feature p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
  margin: 0;
}

/* Incluye */
.incluye {
  background: var(--yellow);
  color: var(--black);
}
.incluye .head { max-width: 760px; margin-bottom: 56px; }
.incluye h2 {
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  margin: 14px 0 14px;
  color: var(--black);
}
.incluye .lead { color: rgba(10,10,10,0.7); font-size: 17px; }
.incluye-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid rgba(10,10,10,0.15);
  border-left: 1px solid rgba(10,10,10,0.15);
}
.incluye-item {
  padding: 28px 24px;
  border-right: 1px solid rgba(10,10,10,0.15);
  border-bottom: 1px solid rgba(10,10,10,0.15);
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--yellow);
  min-height: 168px;
}
.incluye-check {
  width: 28px;
  height: 28px;
  background: var(--black);
  color: var(--yellow);
  font-family: var(--display);
  font-weight: 900;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.incluye-item h4 {
  font-family: var(--display);
  font-weight: 900;
  text-transform: uppercase;
  font-size: 19px;
  margin: 0 0 6px;
  letter-spacing: 0.005em;
}
.incluye-item p {
  margin: 0;
  font-size: 14px;
  color: rgba(10,10,10,0.72);
  line-height: 1.55;
}

/* Trust stats */
.trust { background: var(--black); padding-top: 90px; padding-bottom: 90px; }
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.trust-cell {
  text-align: center;
  padding: 12px 16px;
  border-right: 1px solid rgba(255,255,255,0.07);
}
.trust-cell:last-child { border-right: none; }
.trust-cell .v {
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(3.4rem, 6vw, 5.2rem);
  color: var(--yellow);
  line-height: 1;
}
.trust-cell .l {
  font-family: var(--display);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  margin-top: 14px;
}

/* Testimonios */
.testimonios { background: var(--white); color: var(--black); }
.testimonios .head { max-width: 760px; margin-bottom: 56px; }
.testimonios h2 {
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  margin: 14px 0 12px;
  color: var(--black);
}
.testimonios .lead { color: var(--muted); font-size: 17px; }
.t-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.t-card {
  background: var(--surface);
  border-top: 3px solid var(--yellow);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 280px;
}
.t-card .quote {
  font-family: var(--body);
  font-style: italic;
  font-size: 16.5px;
  line-height: 1.55;
  color: var(--black);
  margin: 0 0 28px;
}
.t-card .who {
  display: flex;
  align-items: center;
  gap: 14px;
}
.t-card .avatar {
  width: 44px; height: 44px;
  background: var(--black);
  color: var(--yellow);
  font-family: var(--display);
  font-weight: 900;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.t-card .name {
  font-family: var(--display);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 14.5px;
}
.t-card .role {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 2px;
}

/* Pricing */
.pricing {
  position: relative;
  background: var(--black);
  text-align: center;
  overflow: hidden;
}
.pricing-bg {
  position: absolute;
  inset: 0;
  background: url("assets/hero-frame-1.jpg") center/cover no-repeat;
  opacity: 0.35;
  z-index: 0;
}
.pricing-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10,10,10,0.7);
}
.pricing-inner { position: relative; z-index: 2; }
.pricing h2 {
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  color: var(--white);
  margin: 22px 0 14px;
}
.pricing .lead {
  color: rgba(255,255,255,0.55);
  font-size: 17px;
  max-width: 540px;
  margin: 0 auto 40px;
}
.price-card {
  background: var(--white);
  color: var(--black);
  border-top: 4px solid var(--yellow);
  max-width: 480px;
  margin: 0 auto;
  padding: 36px 32px 32px;
  text-align: left;
  border-radius: 0;
  position: relative;
}
.price-card .start-badge {
  position: absolute;
  top: -16px;
  left: 24px;
  background: var(--yellow);
  color: var(--black);
  font-family: var(--display);
  font-weight: 900;
  letter-spacing: 0.16em;
  font-size: 11px;
  padding: 6px 12px;
  text-transform: uppercase;
}
.price-card h3 {
  font-family: var(--display);
  font-weight: 900;
  text-transform: uppercase;
  font-size: 22px;
  margin: 0 0 4px;
}
.price-card .row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 14px 0 18px;
}
.price-card .price {
  font-family: var(--display);
  font-weight: 900;
  font-size: 72px;
  line-height: 0.9;
  color: var(--black);
}
.price-card .strike {
  font-family: var(--display);
  font-weight: 800;
  font-size: 22px;
  color: var(--muted);
  text-decoration: line-through;
}
.price-card .currency-label {
  font-family: var(--display);
  font-weight: 800;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.price-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  display: grid;
  gap: 10px;
}
.price-card li {
  font-size: 14.5px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--black);
}
.price-card li::before {
  content: "";
  display: inline-block;
  width: 14px; height: 14px;
  background: var(--yellow);
  margin-top: 4px;
  flex-shrink: 0;
}
.price-card .cta-full {
  width: 100%;
  background: var(--yellow);
  color: var(--black);
  font-family: var(--display);
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 16px;
  border-radius: 4px;
  font-size: 15px;
  border: none;
}
.price-card .meta {
  margin-top: 14px;
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-align: center;
}

/* Footer */
.footer {
  background: var(--black);
  border-top: 3px solid var(--yellow);
  padding: 48px 32px 32px;
}
.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}
.footer-meta {
  display: flex;
  gap: 26px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
}
.footer-meta a:hover { color: var(--yellow); }
.copyright {
  font-size: 12px;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.06em;
}

/* Mobile */
@media (max-width: 880px) {
  .nav-inner { padding: 14px 18px; }
  .nav-links { display: none; }
  section { padding: 80px 22px; }
  .hero { padding: 0 22px; }
  .hero-content { padding-top: 120px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stats .cell { border-bottom: 1px solid rgba(255,255,255,0.08); }
  .hero-stats .cell:nth-child(2) { border-right: none; }
  .cards-3 { grid-template-columns: 1fr; }
  .incluye-grid { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 0; }
  .trust-cell:nth-child(2) { border-right: none; }
  .t-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}