:root {
  --primary: #19d3c5;
  --dark: #081b33;
  --light: #f5f9ff;
  --text: #0f172a;
  --muted: #6b7280;
}

/* RESET */
* {
  box-sizing: border-box;
  font-family: Inter, system-ui, sans-serif;
}

body {
  margin: 0;
  background: linear-gradient(to bottom, #ffffff, #eef4ff);
  color: var(--text);
}

/* LAYOUT */
.container {
  max-width: 1200px;
  margin: auto;
  padding: 0 24px;
}

/* NAVBAR */
.navbar {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  z-index: 100;
  border-bottom: 1px solid #e5e7eb;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.logo {
  font-weight: 800;
  color: var(--dark);
  letter-spacing: 1px;
}

nav a {
  margin: 0 12px;
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
}

.nav-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

.lang {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;

  border: 1px solid #e5e7eb;
  background: #fff;
  color: var(--text);
  color: #0f172a;          /* forzado, no variable */

  padding: 10px 40px 10px 14px;   /* espacio para el caret */
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  line-height: 1;

  min-width: 70px;               /* CLAVE: evita que quede vacío */
  text-align: left;

  outline: none;
  cursor: pointer;
}

.lang option {
  color: var(--text);
  background: #fff;
}


.lang:focus {
  border-color: rgba(25, 211, 197, 0.65);
  box-shadow: 0 0 0 4px rgba(25, 211, 197, 0.18);
}

/* caret custom */
.lang-wrap {
  position: relative;
  display: inline-block;
}

.lang-wrap::after {
  content: "▾";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: #64748b;
  font-size: 12px;
}


/* HERO */
.hero {
  padding: 120px 0;
}

.hero-container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 64px;
}

.hero-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-right {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero h1 {
  font-size: 54px;
  line-height: 1.1;
}

.hero p {
  max-width: 520px;
  margin: 24px 0;
  font-size: 18px;
  color: var(--muted);
}

.hero-buttons {
  margin-top: 32px;
  display: flex;
  gap: 16px;
}

/* ROTATING WORD */
#rotatingWord {
  display: inline-block;
  color: #1dd6c4;
  font-weight: 700;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.fade-out {
  opacity: 0;
  transform: translateY(-6px);
}

/* BUTTONS */
.btn-primary {
  background: var(--primary);
  color: #003;
  padding: 14px 28px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
}

.btn-secondary {
  border: 1px solid var(--primary);
  color: var(--primary);
  padding: 14px 28px;
  border-radius: 10px;
  text-decoration: none;
}

.btn-outline {
  border: 1px solid #ccc;
  padding: 10px 18px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--text);
}

/* METRICS */
.metrics {
  background: #071a34;
  padding: 80px 0;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.metric-card {
  background: #f0f6ff;
  padding: 40px;
  border-radius: 18px;
  text-align: center;
}

.metric-card.highlight {
  background: #e7fff5;
}

/* FEATURES */
.features {
  padding: 100px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature {
  background: #f8fbff;
  padding: 32px;
  border-radius: 16px;
}

/* CHANNELS */
.channels {
  padding: 80px 0;
  background: #071a34;
  color: white;
}

.channels-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.channel {
  background: #0c2a4f;
  padding: 24px;
  border-radius: 14px;
  text-align: center;
  font-weight: 600;
}

/* PLATFORM */
.platform {
  padding: 100px 0;
  text-align: center;
}

/* FOOTER */
.footer {
  background: #050f1f;
  color: #9ca3af;
  padding: 80px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.footer h4 {
  color: white;
}

.footer a {
  display: block;
  color: #9ca3af;
  text-decoration: none;
  margin: 6px 0;
}

.footer-bottom {
  border-top: 1px solid #1f2937;
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 14px;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-right {
    order: -1;
  }

  .hero p {
    margin: 24px auto;
  }

  .hero-buttons {
    justify-content: center;
  }
}

.hero-reviews {
  margin-top: 36px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero-review {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: #6b7280;
  text-align: center;
  opacity: 0.9;
}

.stars {
  color: #fbbf24; /* dorado suave */
  font-size: 16px;
  letter-spacing: 2px;
}

.review-text {
  font-style: italic;
  line-height: 1.3;
}

/* Mobile */
@media (max-width: 768px) {
  .hero-reviews {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}


.bf-why {
  padding: 100px 0;
  background: #ffffff;
  text-align: center;
}

.bf-why h2 {
  font-size: 38px;
  margin-bottom: 12px;
  color: var(--dark);
}

.bf-subtitle {
  font-size: 18px;
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto 64px;
}

.bf-why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.bf-why-card {
  background: #f8fbff;
  padding: 40px 28px;
  border-radius: 20px;
  box-shadow: 0 8px 30px rgba(0,0,0,.05);
  transition: transform .25s ease, box-shadow .25s ease;
}

.bf-why-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,.08);
}

.bf-why-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 16px;
  background: rgba(25, 211, 197, 0.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.bf-why-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--dark);
}

.bf-why-card p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.5;
}

@media (max-width: 900px) {
  .bf-why-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

.bf-how {
  padding: 120px 0;
  background: #ffffff;
}

.bf-how-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
}

.bf-how-left h2 {
  font-size: 42px;
  margin-bottom: 12px;
  color: var(--dark);
}

.bf-how-subtitle {
  font-size: 18px;
  color: var(--muted);
  margin-bottom: 40px;
}

.bf-how-left h3 {
  font-size: 28px;
  margin-bottom: 16px;
  color: var(--dark);
}

.bf-highlight {
  color: var(--primary);
  font-weight: 700;
}

.bf-how-text {
  font-size: 16px;
  line-height: 1.6;
  color: var(--muted);
  max-width: 520px;
}

.bf-how-right {
  display: flex;
  justify-content: center;
  align-items: center;
}

.bf-screenshot {
  background: #0b1220;
  border-radius: 20px;
  padding: 12px;
  box-shadow: 0 20px 50px rgba(0,0,0,.25);
  max-width: 520px;
  width: 100%;
}

.bf-screenshot img {
  width: 100%;
  border-radius: 14px;
  display: block;
}

/* Fade in animation */
.fade {
  opacity: 0;
  transform: translateY(30px);
  transition: all 1s ease;
}

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

@media (max-width: 900px) {
  .bf-how-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .bf-how-text {
    margin: 0 auto;
  }
}

.bf-flow {
  padding: 120px 0;
  background: #f7fbff;
  text-align: center;
}

.bf-flow-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  margin-top: 64px;
}

.bf-flow-step img {
  width: 100%;
  max-width: 260px;
  margin-bottom: 24px;
}

.bf-flow-step h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.bf-flow-step p {
  font-size: 15px;
  color: var(--muted);
}

@media (max-width: 900px) {
  .bf-flow-grid {
    grid-template-columns: 1fr;
  }
}

.bf-scenes {
  padding: 120px 0;
  background: white;
}

.bf-scenes-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 32px;
  margin-top: 60px;
}

.bf-scene {
  background: #f8fbff;
  padding: 24px;
  border-radius: 18px;
}

.bf-scene img {
  width: 100%;
  border-radius: 12px;
  margin-bottom: 16px;
}

.bf-human {
  padding: 120px 0;
  background: #071a34;
  color: white;
}

.bf-human-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.bf-human img {
  width: 100%;
  border-radius: 20px;
}