html, body {
  min-height: 100%;
}

body {
  margin: 0;
  color: #fff;
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.18), transparent 30%),
    radial-gradient(circle at bottom right, rgba(255,191,105,0.20), transparent 26%),
    linear-gradient(135deg, #3a0f5d 0%, #7d2c86 38%, #d65d5d 70%, #ff9f68 100%);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.glass-nav,
.glass-panel {
  background: rgba(17, 24, 39, 0.28);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.18);
}

.glass-nav {
  background: rgba(10, 16, 28, 0.42);
}

.py-lg-6 {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.hero-card,
.oracle-card,
.tip-card {
  border-radius: 1.75rem;
}

.hero-card {
  min-height: 100%;
}

.rock-button {
  display: block;
  width: 100%;
  border: 0;
  padding: 0.75rem;
  border-radius: 1.5rem;
  background: rgba(255,255,255,0.10);
  transition: transform 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.rock-button:hover,
.rock-button:focus-visible {
  transform: translateY(-5px) scale(1.02);
  background: rgba(255,255,255,0.18);
  box-shadow: 0 12px 24px rgba(0,0,0,0.18);
  outline: none;
}

.rock-button img {
  width: 100%;
  height: 130px;
  object-fit: contain;
}

.selected-rock {
  width: min(260px, 60vw);
  max-height: 220px;
  object-fit: contain;
  filter: drop-shadow(0 20px 24px rgba(0,0,0,0.28));
}

.message-display {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  line-height: 1.18;
  max-width: 14ch;
  margin-left: auto;
  margin-right: auto;
}

.tracking {
  letter-spacing: 0.18em;
}

.tip-card {
  background: rgba(255,255,255,0.08);
}

.floating {
  animation: float 4.5s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

ul li + li {
  margin-top: 0.5rem;
}

.btn-outline-light:hover {
  color: #1f2937;
}

@media (max-width: 575.98px) {
  .message-display {
    max-width: 16ch;
  }
}