:root {
  --primary: #0891b2;
  --secondary: #ecfeff;
  --accent: #f97316;
  --text: #164e63;
  --bg: #fafafa;
}

body {
  background: var(--bg);
  color: #18181b;
  font-family: ui-monospace, 'Fira Code', monospace;
}

section {
  padding: 32px 0;
}

.card {
  background: #ffffff;
  border: 1px solid #e4e4e7;
  border-radius: 4px;
}

.btn {
  border-radius: 4px;
  border: 1px solid #18181b;
  font-weight: 500;
  min-height: 44px;
}

.btn-cta {
  background-color: var(--accent);
  color: #ffffff !important;
  border-radius: 4px;
  transition: background-color 0.2s ease, transform 0.1s ease;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-cta:hover {
  background-color: #ea580c;
}

h1, h2 {
  font-weight: 600;
  letter-spacing: -0.03em;
}

/* Accessibility SR-Only for 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;
}

/* Gallery CSS Setup */
.gallery-main {
  position: relative;
  width: 100%;
  padding-bottom: 100%;
  overflow: hidden;
}

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

#img-1:checked ~ .gallery-main .slide-1 { opacity: 1; z-index: 10; }
#img-2:checked ~ .gallery-main .slide-2 { opacity: 1; z-index: 10; }
#img-3:checked ~ .gallery-main .slide-3 { opacity: 1; z-index: 10; }
#img-4:checked ~ .gallery-main .slide-4 { opacity: 1; z-index: 10; }

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

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