:root {
  --bg: #f6f8ff;
  --bg2: #eef3ff;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-border: rgba(20, 30, 60, 0.12);
  --text: rgba(12, 18, 32, 0.92);
  --muted: rgba(12, 18, 32, 0.62);
  --tile-stroke: rgba(20, 30, 60, 0.18);
  --tile-hover: rgba(20, 30, 60, 0.06);
  --accent: #2f6fff;
  --control-bg: rgba(255, 255, 255, 0.7);
  --control-border: rgba(20, 30, 60, 0.14);
  --header-bg: rgba(255, 255, 255, 0.6);
  --panel-head-bg: rgba(255, 255, 255, 0.55);
  --tooltip-bg: rgba(255, 255, 255, 0.96);
  --item-bg: rgba(255, 255, 255, 0.68);

  --c0: rgba(47, 111, 255, 0.08);
  --c1: rgba(47, 111, 255, 0.18);
  --c2: rgba(47, 111, 255, 0.30);
  --c3: rgba(47, 111, 255, 0.46);
  --c4: rgba(47, 111, 255, 0.68);
}

html[data-theme="dark"] {
  --bg: #0b1020;
  --bg2: #0b1020;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-border: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.65);
  --tile-stroke: rgba(255, 255, 255, 0.18);
  --tile-hover: rgba(255, 255, 255, 0.12);
  --accent: #76a7ff;
  --control-bg: rgba(0, 0, 0, 0.22);
  --control-border: rgba(255, 255, 255, 0.16);
  --header-bg: rgba(0, 0, 0, 0.22);
  --panel-head-bg: rgba(0, 0, 0, 0.12);
  --tooltip-bg: rgba(10, 12, 20, 0.95);
  --item-bg: rgba(0, 0, 0, 0.16);

  --c0: rgba(255, 255, 255, 0.06);
  --c1: rgba(118, 167, 255, 0.22);
  --c2: rgba(118, 167, 255, 0.35);
  --c3: rgba(118, 167, 255, 0.55);
  --c4: rgba(118, 167, 255, 0.78);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN",
    "Noto Sans JP", "Yu Gothic", "Meiryo", Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 700px at 15% 0%, rgba(47, 111, 255, 0.16), transparent 60%),
    radial-gradient(900px 700px at 95% 20%, rgba(120, 87, 255, 0.12), transparent 60%),
    linear-gradient(180deg, var(--bg2), var(--bg));
  color: var(--text);
}

code {
  color: rgba(12, 18, 32, 0.82);
}

.header {
  border-bottom: 1px solid var(--panel-border);
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px 20px;
}

h1 {
  margin: 0;
  font-size: 18px;
  letter-spacing: 0.2px;
}

.header__sub {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px 20px 40px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 16px;
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  overflow: hidden;
  min-height: 420px;
}

.panel__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 12px 10px;
  border-bottom: 1px solid var(--panel-border);
  background: var(--panel-head-bg);
}

.toolbar__group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.toolbar__group--right {
  justify-content: flex-end;
}

.select {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

select {
  appearance: none;
  border: 1px solid var(--control-border);
  background: var(--control-bg);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 13px;
  outline: none;
}

select:focus {
  border-color: rgba(118, 167, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(118, 167, 255, 0.18);
}

.legend {
  display: grid;
  grid-template-columns: repeat(10, auto);
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 11px;
}

.legend__swatch {
  width: 14px;
  height: 10px;
  border-radius: 4px;
  border: 1px solid var(--control-border);
}

.legend__swatch--0 {
  background: var(--c0);
}
.legend__swatch--1 {
  background: var(--c1);
}
.legend__swatch--2 {
  background: var(--c2);
}
.legend__swatch--3 {
  background: var(--c3);
}
.legend__swatch--4 {
  background: var(--c4);
}

.mapWrap {
  position: relative;
  padding: 12px;
}

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

.tile {
  cursor: pointer;
  stroke: var(--tile-stroke);
  stroke-width: 1;
  transition: transform 120ms ease, fill 120ms ease;
}

.tile:hover {
  transform: translateY(-1px);
  stroke: rgba(255, 255, 255, 0.28);
}

.tileLabel {
  pointer-events: none;
  fill: rgba(12, 18, 32, 0.78);
  font-size: 11px;
  letter-spacing: 0.2px;
}

.tileCount {
  pointer-events: none;
  fill: rgba(12, 18, 32, 0.86);
  font-size: 12px;
  font-weight: 700;
}

.tile--selected {
  stroke: rgba(118, 167, 255, 0.85);
  stroke-width: 2;
}

.regionLabel {
  pointer-events: none;
  fill: rgba(12, 18, 32, 0.45);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.4px;
}

.regionLabelBg {
  pointer-events: none;
  fill: rgba(255, 255, 255, 0.6);
  stroke: rgba(20, 30, 60, 0.12);
  stroke-width: 1;
  rx: 10;
}

html[data-theme="dark"] .tileLabel {
  fill: rgba(255, 255, 255, 0.85);
}
html[data-theme="dark"] .tileCount {
  fill: rgba(255, 255, 255, 0.85);
}
html[data-theme="dark"] .regionLabel {
  fill: rgba(255, 255, 255, 0.55);
}
html[data-theme="dark"] .regionLabelBg {
  fill: rgba(0, 0, 0, 0.28);
  stroke: rgba(255, 255, 255, 0.14);
}

.tooltip {
  position: absolute;
  left: 0;
  top: 0;
  transform: translate(0, 0);
  background: var(--tooltip-bg);
  border: 1px solid var(--control-border);
  border-radius: 12px;
  padding: 10px 12px;
  max-width: 340px;
  color: var(--text);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.18);
  z-index: 20;
}

.tooltip__title {
  font-weight: 700;
  font-size: 13px;
}

.tooltip__meta {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.panel__title {
  padding: 14px 14px 10px;
  border-bottom: 1px solid var(--panel-border);
  background: var(--panel-head-bg);
}

h2 {
  margin: 0;
  font-size: 15px;
}

.muted {
  color: var(--muted);
  font-size: 12px;
}

.panel__content {
  padding: 12px 14px 14px;
}

.search {
  width: 100%;
  border: 1px solid var(--control-border);
  background: var(--control-bg);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 12px;
  outline: none;
}

.search:focus {
  border-color: rgba(118, 167, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(118, 167, 255, 0.18);
}

.list {
  margin-top: 12px;
  display: grid;
  gap: 10px;
}

.item {
  border: 1px solid var(--panel-border);
  background: var(--item-bg);
  border-radius: 12px;
  padding: 10px 12px;
}

html[data-theme="dark"] code {
  color: rgba(255, 255, 255, 0.85);
}

.item__title {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.35;
}

.item__title a {
  color: var(--text);
  text-decoration: none;
}

.item__title a:hover {
  text-decoration: underline;
}

.item__meta {
  margin-top: 4px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

.badge {
  border: 1px solid rgba(47, 111, 255, 0.28);
  color: rgba(47, 111, 255, 0.98);
  background: rgba(47, 111, 255, 0.10);
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
}

.footer {
  border-top: 1px solid var(--panel-border);
  padding: 18px 20px 26px;
}

.footer__inner {
  max-width: 1200px;
  margin: 0 auto;
}