:root {
  --mercury-dark: #050508;
  --font-display: 'Space Grotesk', sans-serif;
  --font-mono: 'Share Tech Mono', monospace;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--mercury-dark);
  background-image: radial-gradient(rgba(255, 255, 255, 0.02) 1.5px, transparent 1.5px);
  background-size: 35px 35px;
  color: #d3d3d8;
  font-family: var(--font-display);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
}

.mercury-container {
  width: 90%;
  max-width: 950px;
  padding: 40px 0;
}

.mercury-header {
  text-align: center;
  margin-bottom: 50px;
}

.nav-back {
  color: #6c6c7d;
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 2px;
  border: 1px solid #222;
  padding: 5px 12px;
}
.nav-back:hover {
  color: #fff;
  border-color: #fff;
}

.mercury-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
  margin: 20px 0 0 0;
  letter-spacing: 3px;
  color: #fff;
  text-shadow: 0 0 15px rgba(255,255,255,0.1);
}

.mercury-subtitle {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 2.5px;
  color: #88939b;
  margin-top: 10px;
}

/* Morphing Blob Grid */
.mercury-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 40px;
}

/* Fluid mercury cards */
.mercury-card {
  position: relative;
  background: linear-gradient(135deg, #ffffff 0%, #a6b2c3 25%, #464f5c 65%, #0e1115 100%);
  border: 2px solid rgba(255, 255, 255, 0.4);
  padding: 40px 35px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6),
              inset 0 0 20px rgba(255,255,255,0.2);
  transition: transform 0.3s ease;
  overflow: hidden;
  /* border-radius values will be continuously updated by JS */
  border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
}

.mercury-card:hover {
  transform: scale(1.03);
}

/* Inside silver highlight glow */
.mercury-reflection {
  position: absolute;
  top: 5%;
  left: 5%;
  width: 90%;
  height: 90%;
  background: radial-gradient(circle at 20% 20%, rgba(255,255,255,0.6) 0%, transparent 60%);
  pointer-events: none;
  z-index: 1;
}

.card-content {
  position: relative;
  z-index: 2;
  text-shadow: 0 1px 2px rgba(0,0,0,0.8);
}

.mercury-card h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  margin-top: 0;
  color: #fff;
  letter-spacing: 0.5px;
}

.mercury-card p {
  font-size: 0.95rem;
  line-height: 1.65;
  color: #e2e2eb;
}