@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=Inter:wght@400;500&display=swap');

:root {
  --bg: #0a0e1a;
  --panel: #111a2e;
  --border: #25314d;
  --text: #c7d0e0;
  --muted: #6b7891;
  --accent: #5ec8ff;
}

* {
  box-sizing: border-box;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  margin: 0;
  padding: 0 20px 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ---- Header ---- */

.site-header {
  width: 100%;
  max-width: 640px;
  padding: 60px 0 30px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}

.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 10px;
}

.site-header h1 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 1px;
  color: #ffffff;
  margin: 0;
}

/* ---- Panels / cards ---- */

.panel {
  width: 100%;
  max-width: 640px;
  background-color: var(--panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 24px 28px;
  margin-bottom: 24px;
}

.panel h3 {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 14px;
}

.panel h3:not(:first-child) {
  margin-top: 26px;
}

.panel p, .panel li {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  margin: 0;
}

.panel ul {
  margin: 0;
  padding-left: 20px;
}

.panel li {
  margin-bottom: 6px;
}

.panel p + p {
  margin-top: 14px;
}

.panel strong {
  color: #ffffff;
  font-weight: 500;
}

/* ---- Canvas viewport frame ---- */

.canvas-frame {
  position: relative;
  width: 600px;
  max-width: 100%;
  margin-bottom: 40px;
}

.canvas-frame canvas {
  display: block;
  width: 100%;
  background-color: #000000;
  border: 1px solid var(--border);
}

/* Corner brackets, like a viewfinder/instrument readout */
.canvas-frame::before,
.canvas-frame::after,
.canvas-frame .corner-tl,
.canvas-frame .corner-br {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border-color: var(--accent);
  border-style: solid;
}

.canvas-frame::before {
  top: -1px;
  left: -1px;
  border-width: 2px 0 0 2px;
}

.canvas-frame::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 2px 2px 0;
}

.canvas-caption {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--muted);
  text-align: center;
  margin-top: 10px;
}