/* Design System Variables */
:root {
  --primary: #854d0e;
  --secondary: #fffbeb;
  --accent: #0369a1;
  --text: #431407;
  --bg: #fefefe;
}

/* Mobile-first Typography */
body {
  background: #fff;
  color: #111;
  font-size: clamp(14px, 4vw, 16px);
}

h1 {
  font-size: clamp(20px, 4.5vw, 28px);
}

h2 {
  font-size: clamp(18px, 4vw, 24px);
}

section {
  padding: 32px 0;
}

@media (min-width: 768px) {
  section {
    padding: 48px 0;
  }
}

/* Card Styling */
.card {
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  box-shadow: none;
}

/* Button Styling */
.btn {
  border-radius: 6px;
  font-weight: 600;
}

/* Gallery Engine (No JS) */
.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-main {
  position: relative;
  width: 100%;
  padding-bottom: 100%; /* Perfect 1:1 Aspect Ratio */
  overflow: hidden;
}

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

/* Radio Switch State Rules */
#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;
}

/* Active Thumbnail Styling */
#img-1:checked ~ .thumbnails label[for="img-1"] {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
#img-2:checked ~ .thumbnails label[for="img-2"] {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
#img-3:checked ~ .thumbnails label[for="img-3"] {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
#img-4:checked ~ .thumbnails label[for="img-4"] {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}