/* SOFT-WARM Design System */
:root {
  --primary: #f43f5e;
  --secondary: #fff1f2;
  --accent: #0284c7;
  --text: #881337;
  --bg: #fafafa;
}

body {
  background: #fdf8f4;
  color: #2d1b0e;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: clamp(14px, 4vw, 16px);
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

section {
  padding: 64px 16px;
}

.card {
  background: #fff;
  border: none;
  border-radius: 16px;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

.btn {
  border-radius: 99px;
  font-weight: 600;
  min-height: 44px;
}

h1 {
  font-size: clamp(22px, 5vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(18px, 4.5vw, 28px);
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* Accessibility Utility class */
.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-only Logic */
.gallery-main {
  position: relative;
  width: 100%;
  padding-bottom: 100%; /* 1:1 Aspect Ratio without JS */
  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: contain;
  border-radius: 12px;
}

/* Checked State Logic for 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;
}

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

.thumbnails label {
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.2s ease-in-out, transform 0.2s;
}

.thumbnails label:hover {
  transform: scale(1.05);
}

.thumbnails label img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

/* Checked State Logic for Active Thumbnails */
#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);
}