:root {
  --bg: #0f172a;
  --card: #111827;
  --border: #334155;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #2563eb;
  --accent-2: #1d4ed8;
  --error: #fecaca;
  --error-bg: #7f1d1d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.hero {
  margin-bottom: 24px;
}

.hero h1 {
  margin-top: 0;
  margin-bottom: 12px;
}

.warning {
  color: #fbbf24;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 24px;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.thresholds {
  margin-top: 16px;
}

.button {
  border: none;
  border-radius: 10px;
  padding: 10px 16px;
  background: var(--accent);
  color: white;
  cursor: pointer;
  font-size: 15px;
}

.button:hover {
  background: var(--accent-2);
}

.button.secondary {
  display: inline-block;
  text-decoration: none;
}

#fileInput {
  display: none;
}

.status {
  margin-top: 16px;
  color: var(--muted);
}

.error {
  margin-top: 16px;
  padding: 12px;
  border-radius: 10px;
  color: var(--error);
  background: var(--error-bg);
}

.hidden {
  display: none;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

canvas {
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  background: #020617;
  border-radius: 8px;
}

.about ul {
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .results-grid {
    grid-template-columns: 1fr;
  }
}