:root {
  --image-max: 500px;
  --info-width: 300px;
  --gap: 28px;
  --page-pad: 22px;
  --card-pad: 22px;
  --radius: 14px;

  --bg: #f0f0f0;
  --card-bg: #ffffff;
  --ink: #000000;
  --muted: #475569;
  --stroke: #2f5fa3;
  --accent: #1f7ec9;
  --accent-ink: #ffffff;
  --shadow: 0 8px 24px rgba(2, 6, 23, 0.08);
  --badge: var(--accent);

  --product-image: url('../images/polo_b');
  --img-filter: none;

  --swatch-1: #275aa7;
  --swatch-2: #c02633;
  --swatch-3: #16a34a;
  --swatch-4: #eab308;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  padding: var(--page-pad);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  margin: -1px;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.card {
  width: min(
    100%,
    calc(
      var(--image-max) + var(--gap) + var(--info-width) + 2 * var(--card-pad)
    )
  );
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  grid-template-columns: auto var(--info-width);
  gap: var(--gap);
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: var(--card-pad);
  box-shadow: var(--shadow);
  justify-content: center;
}

.photo {
  --img-side: max(
    180px,
    min(
      var(--image-max),
      calc(
        100vw - 2 * var(--page-pad) - 2 * var(--card-pad) - var(--info-width) -
          var(--gap)
      )
    )
  );
  --img-1col: min(
    var(--image-max),
    calc(100vw - 2 * var(--page-pad) - 2 * var(--card-pad))
  );
  width: min(var(--img-2col), var(--img-1col));
  aspect-ratio: 1/1;
  border: 3px solid var(--stroke);
  border-radius: calc(var(--radius) - 6px);
  overflow: hidden;
  flex: 1 1 var(--image-max);
}

.photo_img {
  width: 100%;
  height: 100%;
  background-image: var(--product-image);
  background-size: cover;
  background-position: center;
  filter: var(--img-filter);
}

.info {
  width: var(--info-width);
  flex: 0 0 var(--info-width);
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  text-align: center;
}

.header {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.title {
  font-size: 28px;
  font-weight: 800;
  margin: 4px 0;
}

.badge {
  padding: 6px 10px;
  border-radius: 10px;
  background: var(--badge);
  color: #ffffff;
  font-weight: 700;
  font-size: 13px;
  transform: translateY(-2px);
}

.lead {
  color: var(--muted);
  margin: 6px 0 22px;
  max-width: 280px;
}

h4 {
  margin: 14px 0 8px;
  font-size: 14px;
}

.swatches {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid #cbd5e1;
  box-shadow: inset 0 0 0 2px rgba(0, 0, 0, 0.1);
  cursor: pointer;
}

.swatch[for='c-blue'] {
  background: var(--swatch-1);
}
.swatch[for='c-red'] {
  background: var(--swatch-2);
}
.swatch[for='c-green'] {
  background: var(--swatch-3);
}
.swatch[for='c-yellow'] {
  background: var(--swatch-4);
}

.sizes {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.size {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #ffffff;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.15s, background-color 0.15s, color 0.15s,
    transform 0.1s;
}

.size:hover {
  border-color: #94a3b8;
}

.size:focus-visible {
  outline: 2px solid var(--stroke);
  outline-offset: 2px;
}

.price {
  margin: 22px 0 10px;
  font-size: 28px;
  font-weight: 600;
  color: var(--ink);
  text-align: center;
}

.cta {
  display: inline-grid;
  grid-auto-flow: column;
  align-items: center;
  gap: 10px;
  padding: 16px 26px;
  border-radius: 14px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 800;
  text-decoration: none;
  box-shadow: var(--shadow);
  border: 1px solid rgba(0, 0, 0, 0.08);
  transition: transform 0.12s, filter 0.12s;
}

.cta::before {
  content: '🛒';
  font-size: 20px;
}

.cta:hover {
  filter: brightness(0.95);
  transform: translateY(-1px);
}

.cta:active {
  transform: translateY(0);
}

#c-blue:checked ~ .card {
  --product-image: url('../images/polo_b.png');
  --accent: #1f7ec9;
  --stroke: #2f5fa3;
  --badge: #1f7ec9;
  --img-filter: none;
}
#c-red:checked ~ .card {
  --product-image: url('../images/polo_r.png');
  --accent: #c02633;
  --stroke: #8f1a22;
  --badge: #c02633;
  --img-filter: none;
}
#c-green:checked ~ .card {
  --product-image: url('../images/polo_g.png');
  --accent: #16a34a;
  --stroke: #0b6b2e;
  --badge: #16a34a;
  --img-filter: none;
}
#c-yellow:checked ~ .card {
  --product-image: url('../images/polo_y.png');
  --accent: #eab308;
  --stroke: #b38a06;
  --badge: #eab308;
  --img-filter: none;
}

#c-blue:checked ~ .card .swatches [for='c-blue'],
#c-red:checked ~ .card .swatches [for='c-red'],
#c-green:checked ~ .card .swatches [for='c-green'],
#c-yellow:checked ~ .card .swatches [for='c-yellow'] {
  outline: 2px solid var(--stroke);
  outline-offset: 2px;
}

#s-s:checked ~ .card .sizes [for='s-s'],
#s-m:checked ~ .card .sizes [for='s-m'],
#s-l:checked ~ .card .sizes [for='s-l'],
#s-xl:checked ~ .card .sizes [for='s-xl'] {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}