/* Donchian Breakout — clean professional theme */

:root {
  --accent: #1f4e79;
  --accent-soft: #2d6cb3;
  --positive: #1f8f5a;
  --negative: #c0392b;
  --ink: #1c2833;
  --muted: #5d6d7e;
  --surface: #ffffff;
  --surface-alt: #f4f6f8;
  --border: #dfe4ea;
}

body {
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--surface);
  line-height: 1.6;
}

h1, h2, h3, h4 {
  color: var(--accent);
  font-weight: 600;
  letter-spacing: -0.01em;
}

h1.title {
  font-size: 2.4rem;
  margin-bottom: 0.2rem;
}

.subtitle, p.lead {
  color: var(--muted);
  font-size: 1.1rem;
}

/* Hero block */
.hero {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-soft) 100%);
  color: white;
  padding: 2.5rem 2rem;
  border-radius: 10px;
  margin-bottom: 2rem;
  box-shadow: 0 4px 14px rgba(31, 78, 121, 0.18);
}
.hero h1 {
  color: white;
  margin: 0 0 0.4rem 0;
  font-size: 2.2rem;
}
.hero p {
  margin: 0;
  font-size: 1.1rem;
  opacity: 0.95;
}

/* Section spacing */
section.level2, .section.level2 {
  margin-top: 2.5rem;
}

/* Metrics table */
table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0 1.5rem 0;
  font-size: 0.95rem;
}
table thead th {
  background: var(--accent);
  color: white;
  text-align: left;
  padding: 0.6rem 0.9rem;
  font-weight: 600;
}
table tbody td {
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--border);
}
table tbody tr:nth-child(even) {
  background: var(--surface-alt);
}

/* Callout / notes */
blockquote, .callout-note {
  border-left: 4px solid var(--accent-soft);
  background: var(--surface-alt);
  padding: 0.8rem 1rem;
  margin: 1rem 0;
  color: var(--ink);
}

/* Download button */
.download-link a {
  display: inline-block;
  background: var(--accent);
  color: white !important;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  transition: background 0.15s ease;
}
.download-link a:hover {
  background: var(--accent-soft);
}

/* DataTable styling */
table.dataTable {
  font-size: 0.88rem;
}
table.dataTable thead th {
  background: var(--accent) !important;
  color: white !important;
}

/* Code blocks */
pre, code {
  font-family: "JetBrains Mono", "SF Mono", Menlo, monospace;
  font-size: 0.88rem;
}
pre {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.9rem;
}

/* Utility */
.text-positive { color: var(--positive); font-weight: 600; }
.text-negative { color: var(--negative); font-weight: 600; }