/* Design System: TECH-MINIMAL */
:root {
  --primary: #e11d48;
  --secondary: #fff1f2;
  --accent: #0ea5e9;
  --text: #4c0519;
  --bg: #ffffff;
}

body {
  background: #fafafa;
  color: #18181b;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}

section {
  padding: 48px 16px;
}

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

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

h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.03em;
}

/* Typography clamp settings */
p, span, li, label {
  font-size: clamp(14px, 4vw, 16px);
}

h1 {
  font-size: clamp(20px, 5vw, 28px);
}

h2 {
  font-size: clamp(18px, 4.5vw, 24px);
}

/* Screen Reader Only Utility */
.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;
}

/* Pure CSS Gallery Functionality */
.gallery-main {
  position: relative;
  width: 100%;
  padding-bottom: 100%; /* Forces 1:1 Aspect Ratio without aspect-square class */
  overflow: hidden;
}

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

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Radio Control Selectors for Gallery Slides */
#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;
}

/* Thumbnail Border Highlighting */
#img-1:checked ~ .thumbnails label[for="img-1"] {
  border-color: var(--primary);
  background-color: var(--secondary);
}

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

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

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

/* Mobile-First Responsive Adjustments */
@media (min-width: 768px) {
  section {
    padding: 64px 24px;
  }
}