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

body {
  background: linear-gradient(135deg, #000e1a 0%, #001933 50%, #00264d 100%);
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  color: white;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  text-align: center;
}

.site-hero {
  min-height: 78vh;
  padding: 72px 20px 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(rgba(0, 14, 26, 0.58), rgba(0, 14, 26, 0.82)),
    url("../img/Binaural Power Banner.jpg") center/cover;
  border-bottom: 1px solid rgba(0, 170, 255, 0.35);
}

.site-hero h1 {
  max-width: 980px;
  font-size: clamp(36px, 7vw, 72px);
  line-height: 1.04;
  margin: 10px auto 18px;
}

.eyebrow {
  color: #ffd24a;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-copy {
  max-width: 820px;
  color: #d6e6f7;
  font-size: 20px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 10px;
}

main {
  padding: 40px 20px 70px;
}

.cristalVista {
  backdrop-filter: blur(6px);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  box-shadow: 0 0 12px rgba(0, 140, 255, 0.25);
  padding: 24px;
  margin: 22px auto;
  max-width: 1100px;
  color: white;
}

.intro,
.seo-content,
.blog-preview {
  text-align: left;
  line-height: 1.7;
}

.intro h2,
.seo-content h2,
.blog-preview h2 {
  text-align: center;
  font-size: clamp(26px, 4vw, 42px);
  margin-bottom: 18px;
}

.galeria {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  max-width: 1200px;
  margin: 55px auto;
}

figure {
  width: 290px;
  border-radius: 8px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 0 12px rgba(0, 140, 255, 0.4);
  transition: transform 0.3s ease;
  padding: 25px;
  margin: 10px;
}

figure * {
  margin: 7px;
}

figure:hover {
  transform: scale(1.03);
}

figure img {
  width: 100%;
  height: auto;
  display: block;
}

.card-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 11px;
  font-weight: 800;
  border: 1px solid rgba(255, 210, 74, 0.25);
  color: #ffd24a;
  background: rgba(255, 210, 74, 0.08);
}

.challenge-card,
.coming-soon-card {
  background:
    linear-gradient(180deg, rgba(18, 18, 18, 0.95), rgba(8, 8, 8, 0.98)),
    radial-gradient(circle at top right, rgba(201, 169, 97, 0.1), transparent 32%);
  border: 1px solid rgba(201, 169, 97, 0.2);
  box-shadow: 0 0 18px rgba(201, 169, 97, 0.18);
}

.challenge-card h2,
.coming-soon-card h2 {
  color: #f7f2e8;
}

.challenge-card p,
.coming-soon-card p {
  color: #d4c9b6;
}

.challenge-card:hover,
.coming-soon-card:hover {
  transform: translateY(-4px) scale(1.01);
}

.cta-gold {
  background: linear-gradient(135deg, #7d6230 0%, #c9a961 52%, #e9ce90 100%);
  border-color: rgba(233, 206, 144, 0.75);
  box-shadow: 0 0 14px rgba(201, 169, 97, 0.4);
  color: #080808;
}

.cta-gold:hover {
  background: linear-gradient(135deg, #a47f3e 0%, #e2bf76 55%, #f2ddb0 100%);
  color: #080808;
  box-shadow: 0 0 24px rgba(233, 206, 144, 0.48);
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.content-grid article {
  border: 1px solid rgba(0, 170, 255, 0.28);
  border-radius: 8px;
  padding: 18px;
  background: rgba(0, 42, 84, 0.35);
}

.blog-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.blog-links a {
  color: #fff;
  border: 1px solid rgba(0, 170, 255, 0.35);
  border-radius: 8px;
  padding: 16px;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.05);
  font-weight: 700;
}

.cta {
  background: linear-gradient(145deg, #003366, #005599);
  color: white;
  font-size: 19px;
  font-weight: bold;
  padding: 14px 24px;
  border-radius: 8px;
  border: 2px solid #00aaff;
  box-shadow: 0 0 10px #00aaff, 0 0 20px rgba(0, 170, 255, 0.5);
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease-in-out;
  backdrop-filter: blur(6px);
  cursor: pointer;
  text-align: center;
  margin-top: 25px;
}

.cta-secondary {
  background: transparent;
  border-color: #ffd24a;
  box-shadow: 0 0 10px rgba(255, 210, 74, 0.45);
}

.cta:hover {
  background: #00aaff;
  color: #001122;
  box-shadow: 0 0 25px #00ccff, 0 0 45px rgba(0, 200, 255, 0.6);
  transform: scale(1.03);
}

@media screen and (max-width: 560px) {
  .site-hero {
    min-height: auto;
    padding-top: 54px;
  }

  figure {
    width: 92%;
  }
}