/* Night-trading-desk design system. Both themes are fully defined here via
   CSS variables on <html data-theme=...> -- the toggle is instant and can
   never produce mixed white-on-white states. */

:root[data-theme="dark"] {
  --page-bg: #04060a;
  --surface: #0a0e15;
  --surface-raised: #111726;
  --border: #1c2434;
  --ink: #e9eef8;
  --muted: #94a2b8;
  --subtle: #5d6b82;
  --accent: #ffb224;
  --accent-soft: rgba(255, 178, 36, .12);
  --accent-2: #3ddbf0;
  --gain: #ff4d5e;
  --gain-soft: rgba(255, 77, 94, .12);
  --loss: #2fe6a7;
  --loss-soft: rgba(47, 230, 167, .12);
  --warning: #ffb224;
  --warning-soft: rgba(255, 178, 36, .12);
  --info: #3ddbf0;
  --info-soft: rgba(61, 219, 240, .12);
  --shadow: 0 2px 6px rgba(0,0,0,.45), 0 12px 32px rgba(0,0,0,.35);
  --shadow-hover: 0 4px 10px rgba(0,0,0,.5), 0 18px 44px rgba(0,0,0,.45);
  --card-gradient: linear-gradient(180deg, #101a2c 0%, #0a0e15 100%);
  --glow-gain: 0 0 16px rgba(255, 77, 94, .4);
  --glow-loss: 0 0 16px rgba(47, 230, 167, .35);
  --glow-accent: 0 0 16px rgba(255, 178, 36, .35);
  --line-glow: drop-shadow(0 0 6px var(--tone));
  --page-texture:
    radial-gradient(1100px 520px at 78% -12%, rgba(61,219,240,.08), transparent 60%),
    radial-gradient(900px 460px at 10% -8%, rgba(255,178,36,.06), transparent 55%),
    linear-gradient(rgba(148,162,184,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,162,184,.03) 1px, transparent 1px);
  --page-texture-size: auto, auto, 44px 44px, 44px 44px;
}

:root[data-theme="light"] {
  --page-bg: #f6f7f9;
  --surface: #ffffff;
  --surface-raised: #ffffff;
  --border: #e2e5ea;
  --ink: #14181f;
  --muted: #5b6472;
  --subtle: #8891a0;
  --accent: #2f5fd6;
  --accent-soft: rgba(47, 95, 214, .1);
  --accent-2: #0e7fa8;
  --gain: #c23b3b;
  --gain-soft: rgba(194, 59, 59, .1);
  --loss: #1f8a5f;
  --loss-soft: rgba(31, 138, 95, .1);
  --warning: #b5750c;
  --warning-soft: rgba(181, 117, 12, .1);
  --info: #2f5fd6;
  --info-soft: rgba(47, 95, 214, .1);
  --shadow: 0 1px 2px rgba(20,24,31,.04), 0 1px 12px rgba(20,24,31,.05);
  --shadow-hover: 0 2px 4px rgba(20,24,31,.05), 0 8px 20px rgba(20,24,31,.08);
  --card-gradient: #ffffff;
  --glow-gain: none;
  --glow-loss: none;
  --glow-accent: none;
  --line-glow: none;
  --page-texture: none;
  --page-texture-size: auto;
}

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

html { font-size: 16px; }

body {
  background-color: var(--page-bg);
  background-image: var(--page-texture);
  background-size: var(--page-texture-size);
  background-attachment: fixed;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'PingFang TC', 'Microsoft JhengHei', sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.mono, .kpi-value, .ticker-item, .topbar-meta, td.num, th.num, .sec, .news-meta {
  font-family: 'SF Mono', 'JetBrains Mono', 'Roboto Mono', Menlo, Consolas, monospace;
  font-variant-numeric: tabular-nums;
}

/* --- motion ----------------------------------------------------------- */

@keyframes rise-in { from { opacity: 0; transform: translateY(7px); } to { opacity: 1; transform: none; } }
@keyframes live-pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(47,230,167,.45); } 55% { box-shadow: 0 0 0 6px rgba(47,230,167,0); } }
@keyframes ticker-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@keyframes pulse-bar { 0%,100% { opacity: .4; } 50% { opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* --- ticker tape ------------------------------------------------------- */

.ticker-tape {
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: relative;
}

.ticker-track {
  display: flex;
  width: max-content;
  will-change: transform;
  animation: ticker-scroll 150s linear infinite;
}

.ticker-tape:hover .ticker-track { animation-play-state: paused; }

.ticker-item {
  display: inline-flex;
  align-items: baseline;
  gap: .55rem;
  padding: .55rem 1rem;
  border-right: 1px solid var(--border);
  text-decoration: none;
  font-size: .76rem;
  white-space: nowrap;
  color: var(--muted);
  cursor: pointer;
}

.ticker-item:hover { background: var(--accent-soft); }
.ticker-item b { color: var(--ink); font-weight: 700; }
.ticker-item .up { color: var(--gain); font-weight: 700; text-shadow: var(--glow-gain); }
.ticker-item .down { color: var(--loss); font-weight: 700; text-shadow: var(--glow-loss); }
.ticker-item .dim { color: var(--subtle); font-size: .68rem; }

/* --- topbar / tabs ------------------------------------------------------ */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .7rem 1.1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.topbar-left { display: flex; align-items: center; gap: .65rem; min-width: 0; }

.live-dot {
  width: .5rem; height: .5rem; border-radius: 999px;
  background: var(--loss);
  animation: live-pulse 2.2s ease-in-out infinite;
  flex: 0 0 auto;
}

.brand {
  font-family: 'SF Mono', Menlo, Consolas, monospace;
  font-size: .85rem;
  letter-spacing: .14em;
  color: var(--muted);
}
.brand b { color: var(--accent); }

.topbar-meta { color: var(--subtle); font-size: .7rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.topbar-right { display: flex; gap: .45rem; flex: 0 0 auto; }

.btn {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--ink);
  font: inherit;
  font-size: .82rem;
  font-weight: 600;
  padding: .42rem .8rem;
  cursor: pointer;
  transition: border-color .15s, background .15s, box-shadow .15s;
}
.btn:hover { border-color: var(--accent); background: var(--accent-soft); box-shadow: var(--glow-accent); }
.btn.primary { border-color: var(--accent); color: var(--accent); }
.btn.danger { border-color: var(--gain); color: var(--gain); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.tabs {
  display: flex;
  gap: .15rem;
  padding: .4rem .8rem 0;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }

.tabs button {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font: inherit;
  font-size: .86rem;
  font-weight: 600;
  padding: .55rem .9rem;
  cursor: pointer;
  white-space: nowrap;
}
.tabs button:hover { color: var(--ink); }
.tabs button.active { color: var(--accent); border-bottom-color: var(--accent); }

/* --- layout ------------------------------------------------------------ */

main { flex: 1; width: 100%; max-width: 1440px; margin: 0 auto; padding: 1rem 1.1rem 2rem; }

.tab-page { animation: rise-in .35s ease-out both; }

.two-col { display: grid; grid-template-columns: 1.55fr 1fr; gap: 1.1rem; align-items: start; }
.two-col.even { grid-template-columns: 1fr 1fr; }

/* Grid/flex children default to min-width:auto, which lets a fixed-width
   ECharts canvas prop a column open wider than the viewport on phones.
   Allow every layout child to shrink; chart.resize() then follows. */
.two-col > div { min-width: 0; }
main { overflow-x: clip; }

.sec {
  color: var(--muted);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin: 1rem 0 .45rem;
  padding-left: .55rem;
  border-left: 3px solid var(--accent);
}

.panel {
  background: var(--card-gradient);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: .5rem;
}

.chart { width: 100%; height: 260px; max-width: 100%; overflow: hidden; }
.chart.tall { height: 320px; }

.note { color: var(--muted); font-size: .82rem; margin: .2rem 0 .6rem; line-height: 1.5; }

.footer { color: var(--subtle); font-size: .7rem; text-align: center; padding: 1rem; border-top: 1px solid var(--border); }

/* --- KPI cards ----------------------------------------------------------- */

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: .65rem;
  margin: .5rem 0 .4rem;
}
.kpi-grid.compact { grid-template-columns: repeat(auto-fit, minmax(128px, 1fr)); gap: .55rem; }

.kpi {
  min-height: 84px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card-gradient);
  box-shadow: var(--shadow);
  padding: .8rem .85rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: .25rem;
  position: relative;
  overflow: hidden;
  --tone: var(--info);
  animation: rise-in .5s ease-out both;
  transition: box-shadow .15s, border-color .15s;
}
.kpi:nth-child(2) { animation-delay: .04s; }
.kpi:nth-child(3) { animation-delay: .08s; }
.kpi:nth-child(4) { animation-delay: .12s; }
.kpi:nth-child(5) { animation-delay: .16s; }
.kpi:nth-child(n+6) { animation-delay: .2s; }
.kpi:hover { box-shadow: var(--shadow-hover); border-color: var(--accent-2); }

.kpi::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--tone), transparent 80%);
  filter: var(--line-glow);
}

.kpi.positive { --tone: var(--gain); }
.kpi.negative { --tone: var(--loss); }
.kpi.warning  { --tone: var(--warning); }

.kpi.positive .kpi-value { color: var(--gain); text-shadow: var(--glow-gain); }
.kpi.negative .kpi-value { color: var(--loss); text-shadow: var(--glow-loss); }

.kpi-label {
  color: var(--muted);
  font-size: .66rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
}
.kpi-value { color: var(--ink); font-size: clamp(1rem, 1.4vw, 1.24rem); font-weight: 700; line-height: 1.2; overflow-wrap: anywhere; }
.kpi-note { color: var(--subtle); font-size: .66rem; line-height: 1.3; }
.kpi-note.positive { color: var(--gain); }
.kpi-note.negative { color: var(--loss); }
.kpi-grid.compact .kpi { min-height: 72px; padding: .65rem .7rem; }
.kpi-grid.compact .kpi-value { font-size: clamp(.9rem, 1vw, 1.05rem); }

/* Period-return strip: always one row of four, three lines per cell. */
.period-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .5rem; }
.period-grid .period-card { min-height: 0; padding: .55rem .65rem; gap: .12rem; }
.period-card .kpi-value { font-size: clamp(.85rem, 1vw, 1rem); }
.period-bench { color: var(--subtle); font-size: .64rem; line-height: 1.3; white-space: nowrap; }

/* Single-line stat row: label left, number right, minimal height.
   Selector is specific enough to beat `.kpi-grid.compact .kpi`. */
.kpi-grid .kpi.kpi--row,
.kpi-grid.compact .kpi.kpi--row {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: .6rem;
  min-height: 0;
  padding: .48rem .7rem;
}
.kpi--row .kpi-label {
  font-size: .62rem;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
/* Never wrap the number -- the long label truncates instead. */
.kpi--row .kpi-value { font-size: .85rem; text-align: right; white-space: nowrap; flex: 0 0 auto; }

/* --- freshness ----------------------------------------------------------- */

/* Slim one-line status strip -- info-dense, not a big card. */
.freshness {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .3rem 1.1rem;
  margin: .4rem 0 .6rem;
  padding: .38rem .7rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  font-size: .72rem;
}
.fresh-status { display: inline-flex; align-items: baseline; gap: .45rem; padding: .1rem .5rem; border-radius: 4px; background: var(--info-soft); }
.fresh-status.positive { background: var(--gain-soft); }
.fresh-status.warning { background: var(--warning-soft); }
.fresh-status.negative { background: var(--loss-soft); }
.fresh-status b { font-size: .74rem; }
.fresh-status span { color: var(--muted); font-size: .66rem; }
.fresh-item { display: inline-flex; align-items: baseline; gap: .35rem; }
.fresh-item span { color: var(--subtle); font-size: .6rem; text-transform: uppercase; letter-spacing: .07em; }
.fresh-item b { font-size: .7rem; font-family: 'SF Mono', Menlo, monospace; }

/* Collapsed-by-default risk alerts: a slim pill until tapped open. */
.alert-collapse { margin: .4rem 0; }
.alert-collapse summary {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  cursor: pointer;
  border: 1px solid var(--border);
  border-left: 3px solid var(--warning);
  border-radius: 6px;
  background: var(--warning-soft);
  color: var(--muted);
  font-size: .76rem;
  font-weight: 600;
  padding: .35rem .7rem;
  user-select: none;
}
.alert-collapse summary::-webkit-details-marker { display: none; }
.alert-collapse summary::after { content: "▾"; color: var(--subtle); transition: transform .15s ease; }
.alert-collapse[open] summary::after { transform: rotate(180deg); }
.alert-collapse summary:hover { border-color: var(--warning); }

/* --- alerts --------------------------------------------------------------- */

.alert {
  border: 1px solid var(--border);
  border-left: 3px solid var(--info);
  border-radius: 6px;
  background: var(--info-soft);
  padding: .65rem .85rem;
  margin: .4rem 0;
  font-size: .84rem;
  line-height: 1.5;
}
.alert.warning { border-left-color: var(--warning); background: var(--warning-soft); }
.alert.critical { border-left-color: var(--gain); background: var(--gain-soft); }
.alert.success { border-left-color: var(--loss); background: var(--loss-soft); }

/* --- tables ---------------------------------------------------------------- */

.table-wrap { overflow-x: auto; padding: 0; }

table { width: 100%; border-collapse: collapse; font-size: .82rem; }
th, td { padding: .55rem .75rem; text-align: left; white-space: nowrap; border-bottom: 1px solid var(--border); }
th { color: var(--subtle); font-size: .68rem; text-transform: uppercase; letter-spacing: .07em; position: sticky; top: 0; background: var(--surface-raised); }
tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--accent-soft); }
td.num, th.num { text-align: right; }
td .up { color: var(--gain); font-weight: 600; }
td .down { color: var(--loss); font-weight: 600; }
td .badge { padding: .12rem .5rem; border-radius: 4px; font-size: .7rem; font-weight: 700; }
td .badge.ok { color: var(--loss); background: var(--loss-soft); }
td .badge.fail { color: var(--gain); background: var(--gain-soft); }
td .badge.warn { color: var(--warning); background: var(--warning-soft); }

/* Date stamp on a 今日 figure that is really an older session's close.
   Declared outside the `td` scope because it also rides the ticker tape. */
.badge.stale {
  display: inline-block;
  margin-left: .35rem;
  padding: .1rem .35rem;
  border-radius: 4px;
  font-size: .65rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--warning);
  background: var(--warning-soft);
}

/* --- forms --------------------------------------------------------------- */

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem; padding: .9rem; }
.form-grid label { display: flex; flex-direction: column; gap: .3rem; font-size: .74rem; color: var(--muted); }
.form-grid input, .form-grid select {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--ink);
  font: inherit;
  font-size: .84rem;
  padding: .45rem .6rem;
  min-width: 0;
  max-width: 100%;
}
.form-grid label { min-width: 0; }
.form-grid input:focus, .form-grid select:focus { outline: none; border-color: var(--accent); }
.form-grid button { grid-column: 1 / -1; }
.form-grid .confirm { flex-direction: row; align-items: center; gap: .45rem; grid-column: 1 / -1; }
.form-msg { grid-column: 1 / -1; font-size: .78rem; min-height: 1rem; }
.form-msg.ok { color: var(--loss); }
.form-msg.err { color: var(--gain); }
.remove-list { grid-column: 1 / -1; display: flex; flex-direction: column; gap: .35rem; }
.remove-list label { flex-direction: row; align-items: center; gap: .5rem; font-size: .84rem; color: var(--ink); }

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

.news-controls { display: flex; gap: .55rem; flex-wrap: wrap; margin: .4rem 0 .8rem; }
.news-controls select, .news-controls input {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--ink);
  font: inherit;
  font-size: .84rem;
  padding: .5rem .65rem;
  flex: 1 1 12rem;
}

.news-list { display: flex; flex-direction: column; gap: .6rem; }

.news-card {
  display: block;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-2);
  border-radius: 8px;
  background: var(--card-gradient);
  box-shadow: var(--shadow);
  padding: .85rem 1rem;
  text-decoration: none;
  color: inherit;
  animation: rise-in .4s ease-out both;
  transition: box-shadow .15s, border-color .15s;
}
.news-card:hover { box-shadow: var(--shadow-hover); border-color: var(--accent); }
.news-title { font-size: .92rem; font-weight: 650; line-height: 1.45; }
.news-meta { color: var(--subtle); font-size: .7rem; margin-top: .3rem; }

/* --- loading ----------------------------------------------------------------- */

.loading { display: flex; flex-direction: column; align-items: center; gap: .8rem; padding: 3rem 0; color: var(--muted); font-size: .85rem; }
.loading-pulse { width: 3rem; height: 3px; background: var(--accent); border-radius: 999px; animation: pulse-bar 1.1s ease-in-out infinite; }
.loading[hidden] { display: none; }

/* --- phone: one screen carries the whole story ------------------------------- */

@media (max-width: 700px) {
  main { padding: .6rem .6rem 1.4rem; }
  .two-col, .two-col.even { grid-template-columns: 1fr; }
  .kpi-grid, .kpi-grid.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .45rem; }
  .kpi { min-height: 0; padding: .5rem .6rem; gap: .12rem; }
  .kpi-value { font-size: .95rem; }
  .kpi-label, .kpi-note { font-size: .58rem; }
  /* Period strip stays a single four-across row even on phones. */
  .kpi-grid.period-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .3rem; }
  .period-grid .period-card { padding: .45rem .35rem; }
  .period-grid .kpi-label { font-size: .56rem; }
  .period-card .kpi-value { font-size: .74rem; }
  .period-bench { font-size: .54rem; }
  .fresh-item { display: none; }
  .chart { height: 220px; }
  .chart.tall { height: 250px; }
  .ticker-item { padding: .45rem .7rem; font-size: .7rem; }
  .topbar { padding: .55rem .7rem; }
  .topbar-meta { display: none; }
  .form-grid { grid-template-columns: 1fr; }
  .sec { margin: .75rem 0 .35rem; }
}
