:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel-2: #1c2330;
  --border: #2d333b;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --green: #3fb950;
  --red: #f85149;
  --amber: #d29922;
}

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

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 24px 10px;
  border-bottom: 1px solid var(--border);
}

header h1 { font-size: 1.4rem; }
.subtitle { color: var(--muted); font-size: 0.85rem; }

main {
  flex: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ticker {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  white-space: nowrap;
  mask-image: linear-gradient(90deg, transparent 0, #000 40px, #000 calc(100% - 40px), transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 40px, #000 calc(100% - 40px), transparent 100%);
}

.ticker-track {
  display: inline-block;
  padding: 9px 0;
  animation: ticker-scroll 35s linear infinite;
  will-change: transform;
}

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

.ticker-item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 28px;
  font-size: 0.9rem;
  cursor: pointer;
}

.ticker-item .sym { color: var(--text); font-weight: 700; }
.ticker-item .price { color: var(--text); }
.ticker-item .up { color: var(--green); }
.ticker-item .down { color: var(--red); }
.ticker-item:hover .sym { color: var(--accent); }

@keyframes ticker-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
}

.controls label { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 0.9rem; }

select {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.9rem;
}

button, .file-label {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 12px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
button:hover, .file-label:hover { border-color: var(--accent); }
button:active { transform: translateY(1px); }

.toggle { margin-left: auto; user-select: none; }

.status { font-size: 0.85rem; color: var(--muted); min-width: 120px; }
.status.loading { color: var(--amber); }
.status.error { color: var(--red); }
.status.ok { color: var(--green); }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat .label { font-size: 0.72rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.stat .value { font-size: 1.05rem; font-weight: 600; }
.stat .value.up { color: var(--green); }
.stat .value.down { color: var(--red); }

.chart-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  position: relative;
}
.chart-panel canvas { width: 100%; height: 420px; }
.chart-panel.small canvas { height: 140px; }

footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.78rem;
  text-align: center;
  padding: 10px;
}

@media (max-width: 640px) {
  .chart-panel canvas { height: 300px; }
  .toggle { margin-left: 0; }
}