:root {
  --bg-color: #f8fafc;
  --surface-color: #ffffff;
  --surface-alt: #f1f5f9;
  --border-color: #e2e8f0;
  --border-focus: #3b82f6;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent-red: #ef4444;
  --accent-blue: #3b82f6;
  --accent-neutral: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem;
}

/* Header */
.app-header {
  margin-bottom: 1.5rem;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

.title-area h1 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #0f172a;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.title-badge {
  font-size: 0.75rem;
  font-weight: 600;
  background: #e0e7ff;
  color: #3730a3;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  letter-spacing: normal;
}

.title-area p {
  color: var(--text-secondary);
  font-size: 0.925rem;
  margin-top: 0.25rem;
}

.header-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.year-picker {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.55rem;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.775rem;
  font-weight: 600;
}

.year-picker select {
  border: 0;
  background: transparent;
  color: var(--text-primary);
  font: inherit;
  cursor: pointer;
  outline-offset: 3px;
}

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.8rem;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.825rem;
  font-weight: 500;
  transition: var(--transition);
}

.btn-link:hover {
  background: var(--surface-alt);
  color: var(--text-primary);
}

/* Category Controls */
.controls-panel {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  box-shadow: var(--shadow-sm);
}

.category-nav {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.cat-btn {
  background: var(--surface-alt);
  border: 1px solid transparent;
  color: var(--text-secondary);
  padding: 0.45rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.cat-btn:hover {
  background: #e2e8f0;
  color: var(--text-primary);
}

.cat-btn.active {
  background: #1e293b;
  color: #ffffff;
  border-color: #1e293b;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.category-info-bar {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.cat-desc {
  color: var(--text-secondary);
}

.cat-desc strong {
  color: var(--text-primary);
}

/* Main Grid Layout */
.main-grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 1080px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
}

/* Map Section */
.map-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.map-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  background: #fafafa;
  z-index: 10;
}

.map-title-bar {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.map-actions {
  display: flex;
  gap: 0.35rem;
}

.map-btn {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.6rem;
  font-size: 0.8rem;
  cursor: pointer;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: var(--transition);
}

.map-btn:hover {
  background: var(--surface-alt);
  color: var(--text-primary);
}

.map-container {
  position: relative;
  width: 100%;
  height: 640px;
  background: #f8fafc;
}

#map-svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* Map Features */
.prefecture {
  cursor: pointer;
  stroke: #ffffff;
  stroke-width: 0.75px;
  stroke-linejoin: round;
  transition: stroke 0.15s ease, stroke-width 0.15s ease, opacity 0.15s ease;
}

.prefecture:hover {
  stroke: #0f172a;
  stroke-width: 2px;
  filter: brightness(0.95);
}

.prefecture.selected {
  stroke: #000000;
  stroke-width: 2.5px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.25));
}

.prefecture.highlighted {
  stroke: #0f172a;
  stroke-width: 2.5px;
}

.prefecture.dimmed {
  opacity: 0.3;
}

.pref-label {
  font-size: 9px;
  fill: #1e293b;
  text-anchor: middle;
  pointer-events: none;
  font-weight: 600;
  text-shadow: 0 0 3px #ffffff, 0 0 3px #ffffff;
}

/* Legend Overlay */
.legend-panel {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  box-shadow: var(--shadow-md);
  z-index: 10;
  min-width: 280px;
}

.legend-header {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  display: flex;
  justify-content: space-between;
}

.legend-bar-container {
  width: 100%;
  height: 14px;
  border-radius: 7px;
  position: relative;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.15);
}

.legend-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 0.35rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.legend-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 0.25rem;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.legend-neutral-mark {
  position: absolute;
  top: -3px;
  bottom: -3px;
  width: 2px;
  background: #0f172a;
  transform: translateX(-50%);
}

/* Tooltip */
.cpi-tooltip {
  position: absolute;
  pointer-events: none;
  background: rgba(15, 23, 42, 0.95);
  color: #ffffff;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.85rem;
  z-index: 100;
  display: none;
  min-width: 180px;
  transform: translate(-50%, -115%);
  transition: opacity 0.1s ease;
}

.cpi-tooltip::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -6px;
  border-width: 6px;
  border-style: solid;
  border-color: rgba(15, 23, 42, 0.95) transparent transparent transparent;
}

.tt-pref {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  padding-bottom: 0.25rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.tt-rank {
  font-size: 0.8rem;
  color: #cbd5e1;
  font-weight: 500;
}

.tt-stat-row {
  display: flex;
  justify-content: space-between;
  margin: 0.2rem 0;
}

.tt-val {
  font-weight: 700;
  font-size: 1.1rem;
}

.tt-diff {
  font-size: 0.8rem;
  font-weight: 600;
}

.diff-positive {
  color: #f87171;
}

.diff-negative {
  color: #60a5fa;
}

.diff-zero {
  color: #94a3b8;
}

/* Sidebar Dashboard */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.panel-card {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.panel-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Stats Summary Cards */
.stats-summary-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.stat-box {
  background: var(--surface-alt);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  position: relative;
  overflow: hidden;
}

.stat-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
}

.stat-box.high::before {
  background: var(--accent-red);
}

.stat-box.low::before {
  background: var(--accent-blue);
}

.stat-box.ratio::before {
  background: #f59e0b;
}

.stat-box.avg::before {
  background: #10b981;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
}

.stat-pref {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 0.15rem;
}

.stat-val {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* Selected Detail Card */
.selected-pref-card {
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1.25rem;
  transition: var(--transition);
}

.pref-detail-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.pref-detail-title {
  font-size: 1.15rem;
  font-weight: 800;
}

.pref-detail-rank {
  font-size: 0.85rem;
  background: #0f172a;
  color: #fff;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.category-breakdown-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  max-height: 220px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.breakdown-row {
  display: flex;
  align-items: center;
  font-size: 0.8rem;
  gap: 0.5rem;
}

.breakdown-name {
  width: 90px;
  font-weight: 600;
  white-space: nowrap;
  color: var(--text-secondary);
}

.breakdown-bar-bg {
  flex: 1;
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.breakdown-bar-fill {
  position: absolute;
  top: 0;
  height: 100%;
  border-radius: 4px;
}

.breakdown-val {
  width: 42px;
  text-align: right;
  font-weight: 700;
  color: var(--text-primary);
}

/* Ranking Table & Search */
.ranking-tabs {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 0.75rem;
}

.rank-tab-btn {
  background: var(--surface-alt);
  border: 1px solid var(--border-color);
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.775rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition);
}

.rank-tab-btn.active {
  background: #0f172a;
  color: #ffffff;
  border-color: #0f172a;
}

.search-input-wrap {
  position: relative;
  margin-bottom: 0.75rem;
}

.search-input {
  width: 100%;
  padding: 0.45rem 0.75rem 0.45rem 2rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  background: #fdfdfd;
}

.search-icon {
  position: absolute;
  left: 0.65rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.ranking-list-container {
  max-height: 400px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.ranking-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.ranking-table th {
  position: sticky;
  top: 0;
  background: #f8fafc;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.75rem;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  z-index: 2;
}

.ranking-table td {
  padding: 0.45rem 0.6rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.ranking-row {
  cursor: pointer;
  transition: background 0.15s ease;
}

.ranking-row:hover {
  background: #f1f5f9;
}

.ranking-row.active {
  background: #e0e7ff;
  font-weight: 600;
}

.rank-num {
  font-weight: 700;
  width: 32px;
  text-align: center;
  color: var(--text-secondary);
}

.rank-1 { color: #d97706; font-size: 1rem; }
.rank-2 { color: #64748b; font-size: 0.95rem; }
.rank-3 { color: #b45309; font-size: 0.9rem; }

.pref-cell {
  font-weight: 600;
  white-space: nowrap;
}

.val-cell {
  text-align: right;
  font-weight: 700;
  width: 60px;
}

.diff-cell {
  font-size: 0.75rem;
  width: 65px;
  text-align: right;
}

/* Footer */
.app-footer {
  margin-top: 2rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.825rem;
  line-height: 1.6;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-source a {
  color: var(--accent-blue);
  text-decoration: underline;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}