/* ===================================================
   Reset / Base
   =================================================== */

*{ box-sizing: border-box; }

html{
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body{
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  margin: 0;
  padding: 16px 16px 28px;
  line-height: 1.5;
  color: #111;
  background: #fff;
  overflow-x: hidden; /* はみ出し時の横スクロールを殺す保険 */
}

header{
  max-width: 1100px;
  margin: 0 auto;
  padding: 8px 0 10px;
}

header p{
  max-width: 900px;
  margin: 0 auto;
}

h1{
  text-align: center;
  margin: 8px 0 14px;
  font-size: clamp(20px, 3vw, 30px);
}

/* ===================================================
   Controls card (current UI)
   - HTMLで使っている: .controls-card, .controls-title,
     .filter-group, .filter-actions, .filter-tags,
     .filter-tag, .link-button
   =================================================== */

.controls-card{
  max-width: 900px;
  margin: 0 auto 14px;
  padding: 10px 14px 8px;
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 16px;
}

.controls-title{
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  text-align: center;
}

.filter-group{
  margin-bottom: 10px;
}


.filter-group:last-of-type{
  margin-bottom: 4px;
}

.filter-actions{
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 6px;
}

.controls-card select{
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid #e5e7eb;
  background: #fff;
  font-weight: 600;
  font-size: 0.95rem;
}

#pref-selected,
#disease-selected{
  margin-top: 0;
  padding-top: 0;
}

.link-button{
  background: none;
  border: none;
  color: #6b7280;
  font-size: 13px;
  cursor: pointer;
  padding: 0;
}

.link-button:hover{
  text-decoration: underline;
}

.filter-tags{
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-tag{
  background: #eef2ff;
  color: #1e3a8a;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.filter-tag:hover{
  background: #e0e7ff;
}

/* ===================================================
   Hidden dropdown (internal state / debug-friendly)
   - 現状は #pref-dropdown が display:none なので
     見た目には影響しませんが、将来表示する時や
     デバッグ時に困らないよう“安全側で残す”
   =================================================== */

.dropdown{
  position: relative;
  display: inline-block;
  width: min(360px, 92vw);
  text-align: left;
}

.dropdown-btn{
  border: 1px solid #ccc;
  padding: 10px 10px;
  background: #fff;
  cursor: pointer;
  width: 100%;
  border-radius: 8px;
}

.dropdown-content{
  display: none;
  position: absolute;
  inset: calc(100% + 6px) 0 auto 0; /* ボタン直下 */
  background: #fff;
  border: 1px solid #ccc;
  max-height: 260px;
  overflow-y: auto;
  z-index: 1000;
  border-radius: 10px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.dropdown.open .dropdown-content{ display: block; }

.option{
  padding: 10px 10px;
  border-bottom: 1px solid #eee;
  cursor: pointer;
  user-select: none;
}
.option:last-child{ border-bottom: none; }
.option.selected{ background: #def; }


/* ===================================================
   Chart grid (1 / 2 / 3 columns)
   =================================================== */

#chart-container{
  max-width: 1200px;
  margin: 16px auto 0;
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr; /* スマホ：1列 */
}

/* 中間：2列 */
@media (min-width: 900px){
  #chart-container{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* PC広め：3列 */
@media (min-width: 1400px){
  #chart-container{
    max-width: 1500px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ===================================================
   Chart card
   =================================================== */

.chart{
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 14px;
  padding: 10px;
  overflow: hidden; /* はみ出しの止血 */
  container-type: inline-size;
}

.chart h2{
  margin: 6px 0 8px;
  font-size: 18px; /* 見出しは固定寄り（読みやすさ優先） */
  line-height: 1.25;
}

/* ===================================================
   Inner layout: left charts + legend
   =================================================== */

.chart-wrapper{
  display: flex;
  gap: 6px;
  align-items: flex-start;
  min-width: 0;
  flex-wrap: nowrap;
}

.left-charts{
  flex: 1 1 auto;
  min-width: 0;      /* ← 必須 */
  overflow: visible; /* ← Safari保険 */
}

.chart-legend{
  flex: 0 0 auto;
  width: fit-content;
  max-width: 160px;
  padding-left: 6px;
  padding-right: 0;
  overflow: visible;
}

.chart-legend .legend{
  width: fit-content;
}

/* フォーカスチャートの下に余白を作る */
.chart-svg{
  margin-bottom: 12px;
}

/* ===================================================
   Legend
   =================================================== */

.legend{
  text-align: left;
  font-size: 13px;
}

.legend-item{
  display: block;
  margin: 5px 0;
  font-weight: 700;
  cursor: pointer;
  white-space: normal;
  overflow-wrap: anywhere;
  line-height: 1.25;
}

@media (max-width: 600px){
  .legend{
    font-size: 12px;
  }
  .legend-item{
    margin: 3px 0;
    line-height: 1.2;
  }
}

/* ===================================================
   SVG (重要：スケールさせない)
   =================================================== */

.svg-content{
  display: block;
  max-width: 100%;
}

.chart svg{
  max-width: 100%;
  display: block;
}

/* 軸線 */
.axis path,
.axis line{
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}

/* ★軸文字（フォーカス側） */
.chart-svg .axis text{
  font-size: 12px;
  dominant-baseline: central;
}

/* 線 */
.line{
  fill: none;
  stroke-width: 2px;
}

/* SVGの間隔 */
.chart svg + svg{
  margin-top: 6px;
}

/* ===================================================
   Tooltip
   =================================================== */

.tooltip{
  position: absolute;
  text-align: center;
  padding: 6px 8px;
  background: rgba(220,220,220,0.95);
  border-radius: 6px;
  pointer-events: none;
  opacity: 0;
  font-size: 0.9rem;
  box-shadow: 0 6px 18px rgba(0,0,0,0.16);
}

/* ===================================================
   Slider (Time range)
   =================================================== */

.slider-wrapper{
  display: flex;
  align-items: center;
  gap: 8px;

  background: #f0f0f0;
  padding: 6px 8px;        /* 縦を圧縮 */
  margin-top: 12px;
  margin-bottom: 2px;

  border: 1px solid #ddd;
  border-radius: 10px;
  flex-wrap: nowrap;

  -webkit-user-select: none;
  user-select: none;
}

.slider-wrapper h3{
  margin: 0;
  white-space: nowrap;
  font-size: 14px;
  line-height: 1;
}

.slider-wrapper svg{
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
  touch-action: none;
  overflow: visible; /* 軸文字のクリップを防ぐ */
  display: block;
}

/* スライダー目盛り */
.slider-wrapper .axis text{
  font-size: 15px;
}

/* ===================================================
   Brush
   =================================================== */

.brush .overlay{
  fill: none;
  pointer-events: all;
  cursor: crosshair;
  touch-action: none;
}

.brush .selection{
  fill: #ff0;
  fill-opacity: 0.5;
  cursor: move;
}

.brush .handle{
  fill: rgba(255, 255, 0, 0.75);
  stroke: rgba(255, 136, 0, 0.5);
  stroke-width: 10px;
  vector-effect: non-scaling-stroke;
  cursor: ew-resize;
  filter: drop-shadow(0 0 4px rgba(0,0,0,0.6));
  touch-action: none;
}

/* ===================================================
   Highlight
   =================================================== */

.highlight-line{ stroke-width: 4px !important; }
.highlight-circle{ r: 6 !important; }

.inactive-line,
.inactive-circle{ opacity: 0.15; }

/* ===================================================
   Select ▼ indicator
   =================================================== */

.select-wrap{
  position: relative;
  display: inline-block;
}

.select-wrap::after{
  content: "▾";
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 12px;
  color: #6b7280;          /* link-button と同系色 */
  pointer-events: none;   /* クリックを邪魔しない */
}

.select-wrap select{
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  padding-right: 28px;    /* ▼のぶん余白 */
}

#pref-selected{
  margin-bottom: 10px;
}

/* Add ○○ の直下の余白を強制的に揃える（保険） */
.filter-actions{
  margin-bottom: 6px !important;
}
.filter-actions + .filter-tags{
  margin-top: 0 !important;
}

/* Add 行の高さを揃えて、見た目のズレを消す（本命） */
.controls-card select{
  height: 36px;
}
.link-button{
  line-height: 36px;
}
.select-wrap{
  height: 36px;
}