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

:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --up: #3fb950;
  --down: #f85149;
  --flat: #d29922;
  --aligned: #3fb950;
  --against: #f85149;
  --neutral: #8b949e;
  --oversold: #58a6ff;
  --overbought: #f85149;
  --rebound: #3fb950;
  --pullback: #f85149;
  --bullish-div: #3fb950;
  --bearish-div: #f85149;
  --warning-bg: #2d1d00;
  --warning-text: #e3b341;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', 'Noto Sans JP', sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

#app {
  max-width: 900px;
  margin: 0 auto;
  padding: 16px;
}

header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

h1 {
  font-size: 20px;
  font-weight: 600;
}

#meta {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

#status-badge {
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 600;
}

#status-badge.ok { background: #1f3b2a; color: var(--up); }
#status-badge.partial { background: #2d2600; color: var(--flat); }
#status-badge.error { background: #2d1317; color: var(--down); }

#stale-warning {
  background: var(--warning-bg);
  color: var(--warning-text);
  border: 1px solid var(--warning-text);
  border-radius: 6px;
  padding: 8px 12px;
  margin-bottom: 12px;
  font-size: 13px;
}

.hidden { display: none !important; }

#board-container {
  overflow-x: auto;
}

#board-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border-radius: 8px;
  overflow: hidden;
}

#board-table th,
#board-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  white-space: nowrap;
}

#board-table th {
  background: #1c2128;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

#board-table tbody tr:last-child td {
  border-bottom: none;
}

#board-table tbody tr:hover {
  background: #1c2128;
}

.symbol-name {
  font-weight: 600;
  font-size: 13px;
}

.trend-up { color: var(--up); font-weight: 600; }
.trend-down { color: var(--down); font-weight: 600; }
.trend-flat { color: var(--flat); }
.trend-unknown { color: var(--muted); }

.cell-content {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.trend-line {
  font-size: 12px;
  font-weight: 600;
}

.signal-line {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
}

.signal-label {
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 600;
}

.signal-oversold   { background: #0d2a4a; color: var(--oversold); }
.signal-overbought { background: #2d1317; color: var(--overbought); }
.signal-rebound    { background: #1f3b2a; color: var(--rebound); }
.signal-pullback   { background: #2d1317; color: var(--pullback); }
.signal-bullish-div { background: #1f3b2a; color: var(--bullish-div); }
.signal-bearish-div { background: #2d1317; color: var(--bearish-div); }

/* Freshness classes */
.age-fresh .signal-label {
  filter: brightness(1.25);
  box-shadow: 0 0 4px rgba(255,255,255,0.08);
}
.age-fresh .signal-age  { color: #adbac7; }

.age-normal .signal-age { color: var(--muted); }

.age-stale {
  opacity: 0.5;
}
.age-stale .signal-age  { color: var(--muted); }

.signal-age {
  font-size: 10px;
  color: var(--muted);
  white-space: nowrap;
}

.signal-align {
  font-size: 12px;
}

.rsi-value {
  font-size: 11px;
  color: var(--muted);
}

.alignment-mark {
  font-size: 12px;
}
.align-aligned { color: var(--aligned); }
.align-against { color: var(--against); }
.align-neutral  { color: var(--neutral); }

.loading {
  text-align: center;
  color: var(--muted);
  padding: 24px;
}

footer {
  margin-top: 16px;
  text-align: center;
  color: var(--muted);
  font-size: 11px;
}