:root {
  --bg: #0f172a;
  --card: #111827;
  --txt: #e5e7eb;
  --accent: #f472b6;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  background: radial-gradient(1200px 800px at 70% -20%, #1f2937, transparent), var(--bg);
  color: var(--txt);
  font: 400 18px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell;
}
.card {
  width: min(820px, 92vw);
  background: linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(255, 255, 255, .02));
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 20px;
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(6px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, .35);
}
h1 {
  margin: 0 0 8px;
  font-weight: 800;
  letter-spacing: .4px;
  font-size: clamp(28px, 4vw, 46px);
  background: linear-gradient(90deg, #fff, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.subtitle {
  opacity: .85;
  margin: 0 0 18px;
  font-size: clamp(16px, 2.2vw, 20px);
}
.msg {
  font-size: clamp(16px, 2.2vw, 19px);
  opacity: .95;
}
.poema {
  font-size: 1.1em;
  line-height: 1.1;
  white-space: pre-line;
  margin-top: 12px;
  opacity: 0.95;
}
.poema p {
  margin: 0 0 10px;
}

.assinatura {
  margin-top: 26px;
  opacity: .8;
  font-style: italic;
}
.btns {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.btn {
  border: 1px solid rgba(255, 255, 255, .12);
  background: #111827;
  color: #fff;
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  transition: transform .12s ease, background .2s ease;
}
.btn:hover {
  transform: translateY(-1px);
}
canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
}