:root {
  --primary: #8b5cf6;
  --secondary: #f5f3ff;
  --accent: #ec4899;
  --text: #1e0a3c;
  --bg: #fefefe;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Plus Jakarta Sans', sans-serif;
  background-color: #0f0f0f;
  color: #f5f5f5;
  font-size: clamp(14px, 4vw, 16px);
  line-height: 1.6;
  overflow-x: hidden;
}

h1 {
  font-size: clamp(20px, 4.5vw, 30px);
  font-weight: 800;
  line-height: 1.25;
}

section {
  padding: 48px 16px;
}

@media (min-width: 768px) {
  section {
    padding: 64px 16px;
  }
}

.card {
  background: #1a1a1a;
  border: 1px solid #333333;
  border-radius: 12px;
}

.btn {
  border-radius: 8px;
  background: #ffffff;
  color: #000000;
  font-weight: 700;
  min-height: 44px;
}

.cta-button {
  background-color: var(--accent);
  color: #ffffff !important;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.cta-button:hover {
  opacity: 0.95;
  transform: translateY(-1px);
}

.cta-button:active {
  transform: translateY(0);
}

/* Accessibility helper strictly required for pure CSS gallery */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Main gallery container */
.gallery-main {
  position: relative;
  width: 100%;
  padding-bottom: 100%;
  overflow: hidden;
  border-radius: 12px;
  background-color: #1a1a1a;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  z-index: 1;
  transition: opacity 0.3s ease-in-out;
}

/* Gallery switching logic */
#img-1:checked ~ .gallery-main .slide-1,
#img-2:checked ~ .gallery-main .slide-2,
#img-3:checked ~ .gallery-main .slide-3,
#img-4:checked ~ .gallery-main .slide-4 {
  opacity: 1;
  z-index: 10;
}

/* Thumbnail highlighting */
#img-1:checked ~ .thumbnails label[for="img-1"],
#img-2:checked ~ .thumbnails label[for="img-2"],
#img-3:checked ~ .thumbnails label[for="img-3"],
#img-4:checked ~ .thumbnails label[for="img-4"] {
  border-color: var(--primary);
}

img {
  max-width: 100%;
  height: auto;
}