:root {
  --tbomb-bg: #f8fafc;
  --tbomb-surface: #ffffff;
  --tbomb-tone: #e11d48;
  --tbomb-tone-hover: #be123c;
  --tbomb-ink: #0f172a;
  --tbomb-gradient: linear-gradient(135deg, #e11d48 0%, #be123c 100%);
  --font-display: 'Montserrat', sans-serif;
  --font-body: 'Poppins', sans-serif;
}

body {
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

/* Gallery Radio Logic */
.tbomb-slide-item {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

#tb-g1:checked ~ .tbomb-slide-frame .tbomb-slide-1,
#tb-g2:checked ~ .tbomb-slide-frame .tbomb-slide-2,
#tb-g3:checked ~ .tbomb-slide-frame .tbomb-slide-3,
#tb-g4:checked ~ .tbomb-slide-frame .tbomb-slide-4 {
  opacity: 1;
  visibility: visible;
  z-index: 10;
}

/* Active Thumbnail Highlight */
#tb-g1:checked ~ .tbomb-thumb-row label[for="tb-g1"],
#tb-g2:checked ~ .tbomb-thumb-row label[for="tb-g2"],
#tb-g3:checked ~ .tbomb-thumb-row label[for="tb-g3"],
#tb-g4:checked ~ .tbomb-thumb-row label[for="tb-g4"] {
  border-color: var(--tbomb-tone);
  box-shadow: 0 0 0 2px var(--tbomb-tone);
}

/* CTA hover animation */
.tbomb-action-button:hover {
  background: var(--tbomb-gradient);
  filter: brightness(1.05);
}