:root {
  --testx-bg: #f1f5f9;
  --testx-surface: #ffffff;
  --testx-tone: #0f172a;
  --testx-tone-hover: #1e293b;
  --testx-ink: #0f172a;
  --testx-accent: #0284c7;
  --testx-gradient: linear-gradient(135deg, #0f172a 0%, #0284c7 100%);
  --font-display: 'Oswald', sans-serif;
  --font-body: 'Poppins', sans-serif;
}

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

h1, h2, h3, header span, a.vix-prime-button {
  text-transform: uppercase;
}

/* Preset C Logo Mark */
.vix-brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
}

/* Pure CSS Gallery Control */
.vix-radio-trigger {
  display: none;
}

.vix-slide-item {
  display: none;
  position: absolute;
  inset: 0;
}

/* Default state showing slide 1 */
#vix-pic-1:checked ~ .vix-slides-holder .vix-slide-1 {
  display: block;
}

#vix-pic-2:checked ~ .vix-slides-holder .vix-slide-2 {
  display: block;
}

#vix-pic-3:checked ~ .vix-slides-holder .vix-slide-3 {
  display: block;
}

#vix-pic-4:checked ~ .vix-slides-holder .vix-slide-4 {
  display: block;
}

/* Preset C Thumbnails opacity logic */
.vix-thumb-lbl img {
  opacity: 0.5;
  border-radius: 8px;
  transition: opacity 0.2s ease, border-color 0.2s ease;
}

#vix-pic-1:checked ~ .vix-thumbs-row .vix-thumb-lbl-1 img,
#vix-pic-2:checked ~ .vix-thumbs-row .vix-thumb-lbl-2 img,
#vix-pic-3:checked ~ .vix-thumbs-row .vix-thumb-lbl-3 img,
#vix-pic-4:checked ~ .vix-thumbs-row .vix-thumb-lbl-4 img {
  opacity: 1;
  border-color: var(--testx-accent);
}

/* Preset C Testimonial card overrides */
.vix-testimonial-card {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
}

/* CTA hover effects */
.vix-prime-button {
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.vix-prime-button:hover {
  background-color: var(--testx-tone-hover) !important;
}