:root {
  --primary: #9f1239;
  --secondary: #fce7f3;
  --accent: #d97706;
  --text: #500724;
  --bg: #fdf2f8;
}

/* Base resets & typography */
body {
  background: #fff;
  color: #1a1a1a;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: clamp(14px, 4vw, 16px);
  overflow-x: hidden;
}

section {
  padding: 64px 16px;
}

.card {
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

h1 {
  font-weight: 800;
  line-height: 1.1;
  font-size: clamp(22px, 5vw, 36px);
}

.btn {
  border-radius: 16px;
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  min-height: 44px;
}

/* Accessibility */
.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 Engine */
.gallery-container {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.gallery-main {
  position: relative;
  width: 100%;
  padding-bottom: 100%; /* Perfect square container */
  overflow: hidden;
  border-radius: 16px;
  background-color: #f9fafb;
}

.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;
}

/* Thumbnails engine */
.thumbnails {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.thumbnails label {
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 1;
  background-color: #f3f4f6;
  transition: all 0.2s ease-in-out;
}

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

/* Radio Switch logic */
#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(--primary);
  transform: scale(0.95);
  box-shadow: 0 0 0 2px var(--secondary);
}
#img-2:checked ~ .thumbnails label[for="img-2"] {
  border-color: var(--primary);
  transform: scale(0.95);
  box-shadow: 0 0 0 2px var(--secondary);
}
#img-3:checked ~ .thumbnails label[for="img-3"] {
  border-color: var(--primary);
  transform: scale(0.95);
  box-shadow: 0 0 0 2px var(--secondary);
}
#img-4:checked ~ .thumbnails label[for="img-4"] {
  border-color: var(--primary);
  transform: scale(0.95);
  box-shadow: 0 0 0 2px var(--secondary);
}