/* ==========================================================================
   chart-lab.css — 賢御官網 3.1「材料數據」淺色技術紙帶
   範圍：僅服務 #materials-data（.data-band）內的圖表組件。
   命名：組件類別一律 .chart-lab-*，並以 .data-band 作為作用域前綴，
        使本檔的組件樣式優先於 lumine.css 的紙帶通用排版（後者只作 fallback）。
   紙帶底色、內距與紙紋由 lumine.css 的 .data-band 提供（--paper #EDE7DA）；
   本檔不重複定義紙帶表面，只保留極少量 fallback 變數。
   加載順序：redesign.css → holding.css → coating-art.css → chart-lab.css → lumine.css
   ========================================================================== */

.data-band {
  /* 組件色彩 token（不依賴全局變數，避免被其他分區污染） */
  --cl-paper: var(--paper, #EDE7DA);
  --cl-paper-2: var(--paper-2, #F6F2E9);
  --cl-ink: var(--ink-on-paper, #161B1D);
  --cl-ink-2: #3F4748;
  --cl-ink-3: #6D7574;
  --cl-rule: rgba(22, 27, 29, .15);
  --cl-rule-soft: rgba(22, 27, 29, .08);
  --cl-impact: #E8A85C;
  --cl-fire: #5FD6C0;
  --cl-thermal: #A9CBEA;
  --cl-level-2: #161B1D;
  --cl-level-1: #B9B3A4;
  --cl-level-0: #E9E2D3;
}

.chart-lab-wrap {
  position: relative;
}

/* ---------- 標題區 ---------- */
.data-band .chart-lab-head {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  gap: clamp(26px, 4vw, 72px);
  align-items: end;
  padding-bottom: clamp(20px, 2.2vw, 30px);
  border-bottom: 1px solid var(--cl-rule);
}

.data-band .chart-lab-eyebrow {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 clamp(14px, 1.6vw, 22px);
  font-size: 10.5px;
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: .22em;
  color: #8A6A34;
}

.data-band .chart-lab-eyebrow:before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: .62;
}

.data-band .chart-lab-title {
  margin: 0;
  font-family: var(--font-display, "Noto Serif SC", "Georgia", serif);
  font-size: clamp(28px, 3.3vw, 46px);
  font-weight: 300;
  line-height: 1.26;
  letter-spacing: .01em;
  color: var(--cl-ink);
  text-wrap: balance;
}

.data-band .chart-lab-head-copy {
  display: grid;
  gap: 13px;
  padding-bottom: 5px;
}

.data-band .chart-lab-lead {
  margin: 0;
  max-width: 48ch;
  font-size: 13.5px;
  font-weight: 300;
  line-height: 1.95;
  color: var(--cl-ink-2);
}

.data-band .chart-lab-read {
  margin: 0;
  max-width: 54ch;
  font-size: 11.5px;
  line-height: 1.9;
  color: var(--cl-ink-3);
}

.data-band .chart-lab-read-label {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  border: 1px solid var(--cl-rule);
  border-radius: 1px;
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--cl-ink-2);
  vertical-align: 1px;
}

/* ---------- 圖例 ---------- */
.data-band .chart-lab-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 56px;
  padding-block: 14px 0;
}

.data-band .chart-lab-legend-group {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 7px 16px;
}

.data-band .chart-lab-legend-title {
  margin: 0;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .2em;
  color: var(--cl-ink-3);
}

.data-band .chart-lab-levels,
.data-band .chart-lab-directions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--cl-ink-2);
}

.data-band .chart-lab-levels li,
.data-band .chart-lab-directions li {
  display: flex;
  align-items: center;
  gap: 7px;
}

.data-band .chart-lab-chip {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  border: 1px solid rgba(22, 27, 29, .22);
}

.data-band .chart-lab-chip--2 { background: var(--cl-level-2); }
.data-band .chart-lab-chip--1 { background: var(--cl-level-1); }
.data-band .chart-lab-chip--0 { background: var(--cl-level-0); }

.data-band .chart-lab-num {
  font-family: var(--font-mono, "Cascadia Mono", "Consolas", monospace);
  font-size: 10.5px;
  color: var(--cl-ink);
  letter-spacing: .02em;
}

.data-band .chart-lab-dot {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
}

.data-band .chart-lab-dot[data-dir="impact"] { background: var(--cl-impact); }
.data-band .chart-lab-dot[data-dir="fire"] { background: var(--cl-fire); }
.data-band .chart-lab-dot[data-dir="thermal"] { background: var(--cl-thermal); }

/* ---------- 圖表 ---------- */
.data-band .chart-lab-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(24px, 2.6vw, 48px);
  align-items: start;
  margin-top: clamp(22px, 2.6vw, 36px);
}

.data-band .chart-lab-figure {
  display: flex;
  flex-direction: column;
  gap: 13px;
  width: 100%;
  max-width: 512px;
  min-width: 0;
  margin-inline: auto;
}

.data-band .chart-lab-canvas {
  display: flex;
  justify-content: center;
  min-width: 0;
}

.data-band .chart-lab-svg {
  display: block;
  width: 100%;
  height: auto;
  /* 讓紙帶色透出，SVG 自帶透明背景 */
  background: transparent;
}

/* 兩圖同一顯示比例，軸標籤字級一致；紙帶內並排 */
.data-band .chart-lab-svg { max-width: 512px; }

/* 頁面 body 以 300 字重書寫；圖表軸標籤與格內標記回到 regular，避免過細 */
.data-band .chart-lab-svg g.role-axis-label text,
.data-band .chart-lab-svg g.layer_1_marks text {
  font-weight: 400;
}

.data-band .chart-lab-figcaption {
  display: grid;
  gap: 7px;
  padding-top: 12px;
  border-top: 1px solid var(--cl-rule);
}

.data-band .chart-lab-fig-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-display, "Noto Serif SC", "Georgia", serif);
  font-size: 12.5px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: .16em;
  color: var(--cl-ink-2);
}

.data-band .chart-lab-fig-title:before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
  opacity: .55;
}

.data-band .chart-lab-figcaption p {
  margin: 0;
  max-width: 56ch;
  font-size: 11.5px;
  line-height: 1.9;
  color: var(--cl-ink-2);
}

/* ---------- 說明與來源 ---------- */
.data-band .chart-lab-foot {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 16px 48px;
  margin-top: clamp(28px, 3.2vw, 44px);
  padding-top: 16px;
  border-top: 1px solid var(--cl-rule);
}

.data-band .chart-lab-caption {
  margin: 0;
  max-width: 80ch;
  font-size: 11.5px;
  line-height: 1.9;
  color: var(--cl-ink-2);
}

.data-band .chart-lab-caption-mark {
  margin-right: 6px;
  color: var(--cl-ink-3);
}

.data-band .chart-lab-source {
  margin: 0;
  font-size: 10px;
  line-height: 1.8;
  letter-spacing: .02em;
  color: var(--cl-ink-3);
  text-align: right;
}

.data-band .chart-lab-source-link {
  color: var(--cl-ink-2);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: rgba(22, 27, 29, .35);
  transition: color .2s, text-decoration-color .2s;
}

.data-band .chart-lab-source-link:hover,
.data-band .chart-lab-source-link:focus-visible {
  color: var(--cl-ink);
  text-decoration-color: var(--cl-ink);
}

/* ---------- 響應式 ---------- */
@media (max-width: 1100px) {
  .data-band .chart-lab-head {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
    gap: 18px;
  }

  .data-band .chart-lab-lead {
    max-width: 62ch;
  }

  .data-band .chart-lab-figures {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }
}

@media (max-width: 620px) {
  .data-band .chart-lab-title {
    font-size: clamp(25px, 7.6vw, 32px);
    line-height: 1.3;
  }

  .data-band .chart-lab-title br {
    display: none;
  }

  .data-band .chart-lab-lead {
    font-size: 12.5px;
  }

  .data-band .chart-lab-read {
    font-size: 11px;
  }

  .data-band .chart-lab-legend {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding-top: 12px;
  }

  .data-band .chart-lab-legend-group {
    gap: 5px 12px;
  }

  .data-band .chart-lab-levels,
  .data-band .chart-lab-directions {
    gap: 5px 14px;
    font-size: 11px;
  }

  .data-band .chart-lab-levels li,
  .data-band .chart-lab-directions li {
    gap: 6px;
  }

  .data-band .chart-lab-svg {
    max-width: 100%;
  }

  .data-band .chart-lab-foot {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .data-band .chart-lab-source {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .data-band .chart-lab-source-link {
    transition: none;
  }
}

/* 图 C：全宽强度对比（flint Bar Chart，横向可滑） */
.data-band .chart-lab-figure--wide { grid-column: 1 / -1; max-width: none; }
.data-band .chart-lab-canvas--scroll { overflow-x: auto; max-width: 100%; -webkit-overflow-scrolling: touch; }
.data-band .chart-lab-figure--wide .chart-lab-svg { width: auto; max-width: none; min-width: 860px; }