/* 黒基調を既定にする。明るいテーマは data-theme="light" のときだけ適用する。
   数値は全て #101015 の面に対して実測し、本文色は AA(4.5:1) を満たしている。 */
:root {
  color-scheme: dark;
  --plane: #07070a;
  --surface: #101015;
  --surface-alt: #191921;
  --surface-hi: #21212b;
  --ink: #f4f4f7;
  --ink-2: #a9a9b6;
  --muted: #7b7b88;
  --grid: #1e1e27;
  --baseline: #2e2e3a;
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.13);
  --edge: rgba(255, 255, 255, 0.055);
  --accent: #4d94ff;
  --accent-soft: rgba(77, 148, 255, 0.11);
  --up: #22c55e;
  --up-text: #4ade80;
  --up-soft: rgba(34, 197, 94, 0.14);
  --down: #f04a56;
  --down-text: #ff7a84;
  --down-soft: rgba(240, 74, 86, 0.14);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.5), 0 12px 32px rgba(0, 0, 0, 0.45);
  --radius: 13px;
  --header-h: 58px;
  --sans: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", "Segoe UI", sans-serif;
}

:root[data-theme="light"] {
  color-scheme: light;
  --plane: #f7f7f5;
  --surface: #ffffff;
  --surface-alt: #f1f1ee;
  --surface-hi: #e8e8e4;
  --ink: #0b0b0d;
  --ink-2: #4f4f55;
  --muted: #83838d;
  --grid: #e6e6e2;
  --baseline: #c8c8c3;
  --border: rgba(11, 11, 13, 0.09);
  --border-strong: rgba(11, 11, 13, 0.16);
  --edge: rgba(255, 255, 255, 0.9);
  --accent: #2a6fd6;
  --accent-soft: rgba(42, 111, 214, 0.09);
  --up: #12a150;
  --up-text: #0a7c3c;
  --up-soft: rgba(18, 161, 80, 0.1);
  --down: #d0323f;
  --down-text: #b32531;
  --down-soft: rgba(208, 50, 63, 0.1);
  --shadow: 0 1px 2px rgba(11, 11, 13, 0.05), 0 8px 24px rgba(11, 11, 13, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--plane);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ページ上部にごく薄い光を置き、真っ黒な面が平坦に見えないようにする。 */
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto;
  height: 520px;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(80% 320px at 18% 0%, rgba(77, 148, 255, 0.1), transparent 70%),
    radial-gradient(60% 260px at 82% 0%, rgba(34, 197, 94, 0.055), transparent 72%);
}
:root[data-theme="light"] body::before { opacity: 0.55; }

.site-header, main, .site-footer { position: relative; z-index: 1; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* ------------------------------------------------------------- レイアウト */
/* 左2割をニュースの帯、右8割を相場面にする。帯と相場面はそれぞれ独立に縦スクロールする。 */

.layout {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: minmax(230px, 20%) 1fr;
  height: calc(100dvh - var(--header-h));
}

.news-rail {
  display: flex; flex-direction: column; min-height: 0;
  border-right: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 55%, transparent);
}

.board {
  min-height: 0; overflow-y: auto; overscroll-behavior: contain;
  padding: 0 26px 0;
}

.mobile-tabs { display: none; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--accent); color: #fff; padding: 10px 16px;
}
.skip-link:focus { left: 8px; top: 8px; }

a { color: inherit; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

/* ---------------------------------------------------------------- header */

.site-header {
  position: sticky; top: 0; z-index: 20;
  height: var(--header-h);
  background: color-mix(in srgb, var(--plane) 82%, transparent);
  backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; height: 100%; padding: 0 20px;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 32px; height: 32px; flex: none; }
.brand-mark rect { fill: var(--accent); }
.brand-mark path { stroke: #fff; }
.brand-name {
  display: block; margin: 0; font-size: 17px; font-weight: 700;
  letter-spacing: 0.01em; line-height: 1.3;
}
.brand-sub { display: block; font-size: 11.5px; color: var(--muted); line-height: 1.3; }

.header-tools { display: flex; align-items: center; gap: 10px; }
.updated { margin: 0; font-size: 12px; color: var(--ink-2); text-align: right; }
.updated span { display: block; font-variant-numeric: tabular-nums; }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; flex: none;
  border: 1px solid var(--border); border-radius: 9px;
  background: var(--surface); color: var(--ink-2);
  font-size: 15px; cursor: pointer;
}
.icon-btn:hover { background: var(--surface-alt); color: var(--ink); }

.site-nav { border-top: 1px solid var(--border); overflow-x: auto; scrollbar-width: none; }
.site-nav::-webkit-scrollbar { display: none; }
.nav-inner { display: flex; gap: 4px; padding-top: 4px; padding-bottom: 4px; white-space: nowrap; }
.nav-inner a {
  padding: 6px 11px; border-radius: 8px; font-size: 13px;
  color: var(--ink-2); text-decoration: none;
}
.nav-inner a:hover { background: var(--surface-alt); color: var(--ink); }

/* ------------------------------------------------------------ highlights */

.watchlist { padding-top: 22px; }

.watch-grid {
  display: grid; gap: 10px;
  grid-template-columns: repeat(auto-fill, minmax(196px, 1fr));
}

.board-nav {
  position: sticky; top: 0; z-index: 10; margin-top: 34px;
  background: color-mix(in srgb, var(--plane) 90%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  overflow-x: auto; scrollbar-width: none;
}
.board-nav::-webkit-scrollbar { display: none; }
.board-nav > div { display: flex; gap: 4px; padding: 7px 0; white-space: nowrap; }
.board-nav a {
  padding: 5px 11px; border-radius: 8px; font-size: 12.5px;
  color: var(--ink-2); text-decoration: none;
}
.board-nav a:hover { background: var(--surface-alt); color: var(--ink); }

.ghost-btn, .primary-btn {
  font: inherit; font-size: 13px; cursor: pointer;
  padding: 7px 14px; border-radius: 9px;
}
.ghost-btn {
  background: var(--surface-alt); border: 1px solid var(--border);
  color: var(--ink-2);
}
.ghost-btn:hover { color: var(--ink); border-color: var(--border-strong); }
.primary-btn {
  background: var(--accent); border: 1px solid transparent; color: #fff; font-weight: 600;
}
.primary-btn:hover { filter: brightness(1.1); }

/* --------------------------------------------------------------- 設定 */

.settings-panel { width: min(680px, 100%); }
.settings-body { margin-top: 16px; }
.settings-group + .settings-group { margin-top: 18px; }
.settings-group h4 {
  margin: 0 0 8px; font-size: 12px; color: var(--muted);
  letter-spacing: 0.04em; font-weight: 650;
}
.settings-options {
  display: grid; gap: 6px;
  grid-template-columns: repeat(auto-fill, minmax(184px, 1fr));
}
.settings-options label {
  display: flex; align-items: center; gap: 8px; cursor: pointer;
  padding: 7px 10px; border-radius: 8px; font-size: 13px;
  border: 1px solid var(--border); background: var(--surface-alt);
}
.settings-options label:hover { border-color: var(--border-strong); }
.settings-options input { accent-color: var(--accent); flex: none; }
.settings-options span {
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.settings-foot {
  display: flex; justify-content: space-between; gap: 12px;
  margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border);
}

.stat-tile {
  position: relative;
  background: linear-gradient(180deg, var(--surface-alt), var(--surface) 62%);
  border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 15px 12px;
  box-shadow: var(--shadow), inset 0 1px 0 var(--edge);
  text-align: left; cursor: pointer;
  font: inherit; color: inherit; display: block; width: 100%;
}
.stat-tile:hover { border-color: var(--border-strong); }
.stat-label {
  display: block; font-size: 11.5px; color: var(--ink-2);
  margin: 0 0 3px; letter-spacing: 0.02em;
}
.stat-value {
  display: block; font-size: 26px; font-weight: 640; line-height: 1.15;
  letter-spacing: -0.02em; font-variant-numeric: tabular-nums;
}
.stat-foot { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-top: 3px; }

/* --------------------------------------------------------------- deltas */

.delta {
  font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.delta.up { color: var(--up-text); }
.delta.down { color: var(--down-text); }
.delta.flat { color: var(--muted); }
.delta .arrow { font-size: 10px; margin-right: 2px; }

.pill {
  display: inline-block; padding: 1px 7px; border-radius: 999px;
  font-size: 11.5px; font-weight: 600; font-variant-numeric: tabular-nums;
}
.pill.up { background: var(--up-soft); color: var(--up-text); }
.pill.down { background: var(--down-soft); color: var(--down-text); }
.pill.flat { background: var(--surface-alt); color: var(--muted); }

/* -------------------------------------------------------------- sections */

.market-section { padding-top: 34px; scroll-margin-top: 108px; }

.section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; margin-bottom: 12px;
}
.section-head h2 { margin: 0; font-size: 18px; letter-spacing: 0.01em; }
.section-note { margin: 2px 0 0; font-size: 12.5px; color: var(--muted); }

.segmented {
  display: inline-flex; gap: 2px; padding: 3px;
  background: var(--surface-alt); border-radius: 9px;
}
.segmented button {
  border: 0; background: transparent; color: var(--ink-2);
  font: inherit; font-size: 12.5px; padding: 4px 11px;
  border-radius: 7px; cursor: pointer;
}
.segmented button:hover { color: var(--ink); }
.segmented button.is-active {
  background: var(--surface); color: var(--ink);
  font-weight: 600; box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

/* ----------------------------------------------------------------- table */

.table-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow), inset 0 1px 0 var(--edge);
}
.table-scroll { overflow-x: auto; }

table.quotes { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 640px; }
table.quotes th, table.quotes td { padding: 9px 14px; text-align: right; white-space: nowrap; }
table.quotes th {
  font-size: 11px; font-weight: 600; color: var(--muted);
  letter-spacing: 0.04em; text-align: right;
  border-bottom: 1px solid var(--baseline);
  background: var(--surface-alt); position: sticky; top: 0;
}
table.quotes th:first-child, table.quotes td:first-child { text-align: left; }
table.quotes td { border-bottom: 1px solid var(--grid); font-variant-numeric: tabular-nums; }
table.quotes tbody tr:last-child td { border-bottom: 0; }
table.quotes tbody tr { cursor: pointer; }
table.quotes tbody tr:hover td { background: var(--accent-soft); }

.name-cell { display: flex; flex-direction: column; line-height: 1.35; }
.name-main { font-weight: 600; }
.name-sub { font-size: 11.5px; color: var(--muted); }
.price-cell { font-weight: 600; }
.spark-cell { width: 92px; }
.stale-flag {
  font-size: 10px; color: var(--muted); border: 1px solid var(--baseline);
  border-radius: 4px; padding: 0 4px; margin-left: 6px; vertical-align: 1px;
}

/* -------------------------------------------------------------- sparkline */

.spark { display: block; width: 84px; height: 26px; }
.spark path.line { fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.spark path.area { stroke: none; }
.spark.up path.line { stroke: var(--up); }
.spark.up path.area { fill: var(--up-soft); }
.spark.down path.line { stroke: var(--down); }
.spark.down path.area { fill: var(--down-soft); }
.spark.flat path.line { stroke: var(--muted); }
.spark.flat path.area { fill: transparent; }

/* ------------------------------------------------------------------ news */

.rail-head {
  flex: none; display: flex; align-items: center; justify-content: space-between;
  gap: 8px; padding: 13px 14px 11px; border-bottom: 1px solid var(--border);
}
.rail-head h2 { margin: 0; font-size: 14px; letter-spacing: 0.02em; }

.news-list {
  flex: 1 1 auto; min-height: 0; overflow-y: auto; overscroll-behavior: contain;
  list-style: none; margin: 0; padding: 0;
}
.news-list li { border-bottom: 1px solid var(--grid); }
.news-list button {
  display: block; width: 100%; text-align: left; cursor: pointer;
  background: none; border: 0; font: inherit; color: inherit;
  padding: 11px 14px;
}
.news-list button:hover { background: var(--accent-soft); }
.news-list button.is-active { background: var(--accent-soft); box-shadow: inset 2px 0 0 var(--accent); }

.news-meta {
  display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
  font-size: 10.5px; color: var(--muted); margin-bottom: 4px;
}
.news-source { font-weight: 650; color: var(--ink-2); }
/* 一次情報・専門メディア・総合媒体を色分けし、出所の性格が一目で分かるようにする。 */
.tier-badge {
  font-size: 9.5px; font-weight: 700; letter-spacing: 0.04em;
  padding: 0 4px; border-radius: 3px; border: 1px solid currentColor;
}
.tier-badge.primary { color: var(--up-text); }
.tier-badge.wire { color: var(--accent); }
.tier-badge.general { color: var(--muted); }

.news-title {
  font-size: 12.8px; font-weight: 600; line-height: 1.45;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}

.more-btn {
  flex: none; display: block; width: 100%; padding: 11px;
  background: none; border: 0; border-top: 1px solid var(--border);
  color: var(--ink-2); font: inherit; font-size: 12.5px; cursor: pointer;
}
.more-btn:hover { background: var(--surface-alt); color: var(--ink); }

/* ------------------------------------------------------- ニュース詳細 */

.article-panel { width: min(560px, 100%); }
.article-meta {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  margin: 0; font-size: 12px; color: var(--muted);
}
.article-title { margin: 12px 0 0; font-size: 19px; line-height: 1.45; }
.article-summary {
  margin: 12px 0 0; font-size: 14px; color: var(--ink-2); line-height: 1.8;
  white-space: pre-wrap;
}
.article-link {
  display: inline-block; margin-top: 18px; padding: 9px 16px;
  background: var(--accent); color: #fff; text-decoration: none;
  border-radius: 9px; font-size: 13.5px; font-weight: 600;
}
.article-link:hover { filter: brightness(1.1); }

/* ---------------------------------------------------------------- footer */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px; margin-top: 40px;
}
.disclaimer { margin: 0; font-size: 12px; color: var(--ink-2); line-height: 1.75; }
.credits { margin: 10px 0 0; font-size: 11.5px; color: var(--muted); }

/* ---------------------------------------------------------------- detail */

.detail-backdrop {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(3, 3, 6, 0.72);
  backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.detail-backdrop[hidden] { display: none; }

.detail-panel {
  background: linear-gradient(180deg, var(--surface-alt), var(--surface) 180px);
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.6), inset 0 1px 0 var(--edge);
  width: min(620px, 100%); max-height: 90vh; overflow-y: auto; padding: 20px 22px 22px;
}
.detail-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.detail-head h3 { margin: 0; font-size: 18px; }
.detail-sub { margin: 2px 0 0; font-size: 12.5px; color: var(--muted); }
.detail-price { display: flex; align-items: baseline; gap: 12px; margin: 14px 0 12px; }
.detail-value {
  font-size: 34px; font-weight: 640; letter-spacing: -0.025em;
  font-variant-numeric: tabular-nums;
}
.detail-price .delta { font-size: 15px; }
.range-picker { margin-bottom: 12px; }

.detail-chart { margin: 0; }
.detail-chart svg { display: block; width: 100%; height: auto; }
.detail-chart figcaption { font-size: 11.5px; color: var(--muted); margin-top: 6px; }

.chart-grid line { stroke: var(--grid); stroke-width: 1; }
.chart-axis text { fill: var(--muted); font-size: 10px; font-family: var(--sans); }
.chart-line { fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.chart-area { stroke: none; }
.chart-hit { fill: transparent; cursor: crosshair; }
.chart-cursor line { stroke: var(--baseline); stroke-width: 1; }
.chart-cursor circle { stroke: var(--surface); stroke-width: 2; }

.chart-tooltip {
  position: absolute; pointer-events: none; z-index: 2;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; box-shadow: var(--shadow); padding: 6px 9px;
  font-size: 12px; white-space: nowrap; font-variant-numeric: tabular-nums;
  transform: translate(-50%, -120%);
}
.chart-tooltip .tt-date { display: block; color: var(--muted); font-size: 11px; }
.chart-tooltip .tt-value { display: block; font-weight: 650; }
.chart-wrap { position: relative; }

.detail-stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1px; margin: 16px 0 0; padding: 0;
  background: var(--grid); border: 1px solid var(--grid); border-radius: 10px; overflow: hidden;
}
.detail-stats > div { background: var(--surface); padding: 9px 12px; }
.detail-stats dt { font-size: 11.5px; color: var(--muted); }
.detail-stats dd {
  margin: 1px 0 0; font-size: 14px; font-weight: 600; font-variant-numeric: tabular-nums;
}

.empty-state { padding: 28px; text-align: center; color: var(--muted); font-size: 13.5px; }

/* 画面が狭いときは2割/8割の並びが成立しないので、タブでの切り替えに変える。 */
@media (max-width: 860px) {
  /* dvh はURLバーの開閉で値が変わるため、これで高さを固定するとスクロール中に
     レイアウトが伸び縮みして画面が揺れる。狭い画面では内側のスクロール枠をやめ、
     ページ全体を普通にスクロールさせる。 */
  .layout {
    grid-template-columns: 1fr;
    height: auto;
  }
  .news-rail, .board {
    height: auto; min-height: 0; overflow: visible;
  }
  .news-list {
    flex: none; overflow: visible;
  }

  .mobile-tabs {
    position: sticky; top: var(--header-h); z-index: 15;
    display: grid; grid-template-columns: 1fr 1fr; height: 42px;
    background: var(--plane); border-bottom: 1px solid var(--border);
  }
  .mobile-tabs button {
    background: none; border: 0; font: inherit; font-size: 13.5px;
    color: var(--muted); cursor: pointer;
  }
  .mobile-tabs button.is-active {
    color: var(--ink); font-weight: 650; box-shadow: inset 0 -2px 0 var(--accent);
  }

  .news-rail { border-right: 0; }
  .news-rail[data-pane-hidden="true"], .board[data-pane-hidden="true"] { display: none; }
  .board { padding: 0 16px; }

  /* ぼかしと固定背景はスクロールのたびに再描画が走り、スマホでは目に見えて重い。 */
  .site-header, .board-nav {
    backdrop-filter: none;
    background: var(--plane);
  }
  body::before { position: absolute; }
  .board-nav { position: static; margin-top: 26px; }
}

@media (max-width: 640px) {
  .brand-sub { display: none; }
  .stat-value { font-size: 22px; }
  .detail-value { font-size: 27px; }
  .detail-panel { padding: 16px; }
  .watch-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }

  /* 表が画面幅に収まらないと横スクロールが生まれ、縦スワイプと取り合いになる。
     前日比と30日推移を隠して1画面に収める。どちらも行をタップすれば詳細で見られる。 */
  table.quotes { min-width: 0; font-size: 13.5px; }
  table.quotes th, table.quotes td { padding: 9px 10px; }
  table.quotes th:nth-child(3), table.quotes td:nth-child(3),
  table.quotes th:nth-child(5), table.quotes td:nth-child(5) { display: none; }
  .settings-options { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: no-preference) {
  .stat-tile, .news-list a, table.quotes tbody tr { transition: background-color 0.12s ease, border-color 0.12s ease; }
}