:root {
  --page-max-width: 980px;
  --icon-size: clamp(54px, 9vw, 110px);
  --label-bg: rgba(255, 255, 255, 0.92);
  --label-color: #333;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #2b2b2b;
  background: #fff;
}

.page {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 24px 18px 40px;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 400;
  line-height: 1.05;
}

.map-frame {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
}

.map-bg {
  display: block;
  width: 100%;
  height: auto;
}

.map-grid {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: repeat(6, 1fr);
  z-index: 2;
}

.map-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  text-decoration: none;
  min-width: 44px;
  min-height: 44px;
  transition: transform 160ms ease, filter 160ms ease;
}

.map-icon img {
  width: var(--icon-size);
  max-width: 92%;
  height: auto;
  display: block;
  filter: drop-shadow(0 1px 1px rgba(0,0,0,.15));
}

.map-icon:hover,
.map-icon:focus-visible {
  transform: scale(1.08);
  z-index: 5;
  outline: none;
}

.map-icon:focus-visible img {
  outline: 3px solid #2f6fdd;
  outline-offset: 4px;
  border-radius: 6px;
}

/* Hover label for desktop / mouse users */
.map-icon::after {
  content: attr(data-label);
  position: absolute;
  left: 50%;
  top: calc(100% + 4px);
  transform: translateX(-50%);
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--label-bg);
  color: var(--label-color);
  font-size: 14px;
  line-height: 1.2;
  white-space: nowrap;
  box-shadow: 0 1px 6px rgba(0,0,0,.12);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease;
}

.map-icon:hover::after,
.map-icon:focus-visible::after {
  opacity: 1;
}

@media (hover: none) {
  .map-icon::after { display: none; }
}

/* Cell classes: r = row, c = column */
.r1-c1 { grid-row: 1; grid-column: 1; }
.r1-c2 { grid-row: 1; grid-column: 2; }
.r1-c3 { grid-row: 1; grid-column: 3; }
.r1-c4 { grid-row: 1; grid-column: 4; }
.r1-c5 { grid-row: 1; grid-column: 5; }
.r1-c6 { grid-row: 1; grid-column: 6; }
.r2-c1 { grid-row: 2; grid-column: 1; }
.r2-c2 { grid-row: 2; grid-column: 2; }
.r2-c3 { grid-row: 2; grid-column: 3; }
.r2-c4 { grid-row: 2; grid-column: 4; }
.r2-c5 { grid-row: 2; grid-column: 5; }
.r2-c6 { grid-row: 2; grid-column: 6; }
.r3-c1 { grid-row: 3; grid-column: 1; }
.r3-c2 { grid-row: 3; grid-column: 2; }
.r3-c3 { grid-row: 3; grid-column: 3; }
.r3-c4 { grid-row: 3; grid-column: 4; }
.r3-c5 { grid-row: 3; grid-column: 5; }
.r3-c6 { grid-row: 3; grid-column: 6; }
.r4-c1 { grid-row: 4; grid-column: 1; }
.r4-c2 { grid-row: 4; grid-column: 2; }
.r4-c3 { grid-row: 4; grid-column: 3; }
.r4-c4 { grid-row: 4; grid-column: 4; }
.r4-c5 { grid-row: 4; grid-column: 5; }
.r4-c6 { grid-row: 4; grid-column: 6; }
.r5-c1 { grid-row: 5; grid-column: 1; }
.r5-c2 { grid-row: 5; grid-column: 2; }
.r5-c3 { grid-row: 5; grid-column: 3; }
.r5-c4 { grid-row: 5; grid-column: 4; }
.r5-c5 { grid-row: 5; grid-column: 5; }
.r5-c6 { grid-row: 5; grid-column: 6; }
.r6-c1 { grid-row: 6; grid-column: 1; }
.r6-c2 { grid-row: 6; grid-column: 2; }
.r6-c3 { grid-row: 6; grid-column: 3; }
.r6-c4 { grid-row: 6; grid-column: 4; }
.r6-c5 { grid-row: 6; grid-column: 5; }
.r6-c6 { grid-row: 6; grid-column: 6; }

/* Fine tuning inside each cell */
.pos-left   { justify-self: start; }
.pos-center { justify-self: center; }
.pos-right  { justify-self: end; }
.pos-top    { align-self: start; }
.pos-middle { align-self: center; }
.pos-bottom { align-self: end; }

@media (max-width: 520px) {
  .page { padding: 16px 10px 28px; }
  h1 { margin-bottom: 10px; }
  .map-frame { max-width: 100%; }
.map-icon img {
  transition: transform 0.25s ease, filter 0.25s ease;
}

.map-icon:hover img {
  transform: translateY(-6px) scale(1.08);
  filter: drop-shadow(0 8px 8px rgba(0, 0, 0, 0.25));
}
}