:root {
  --bg: #0f1115;
  --card: #1a1d24;
  --fg: #f4f5f7;
  --muted: #9aa0a6;
  --accent: #22c55e;
  --accent-fg: #05210f;
  --border: #2a2e38;
  --error: #ef4444;
  --radius: 12px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 480px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

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

h1 {
  margin: 0 0 8px;
  font-size: 1.5rem;
  line-height: 1.2;
}

.lead {
  margin: 0 0 20px;
  color: var(--muted);
  line-height: 1.5;
}

form label {
  display: block;
  margin-bottom: 14px;
}

form span {
  display: block;
  font-size: 0.875rem;
  margin-bottom: 6px;
  color: var(--muted);
}

input[type="text"],
input[type="email"],
input[type="tel"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0f1115;
  color: var(--fg);
  font-size: 1rem;
  font-family: inherit;
}

input:focus {
  outline: none;
  border-color: var(--accent);
}

button, .share {
  display: inline-block;
  width: 100%;
  padding: 14px 18px;
  border-radius: 8px;
  border: 0;
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  text-align: center;
  text-decoration: none;
}

button:disabled {
  opacity: 0.6;
  cursor: progress;
}

.error {
  color: var(--error);
  margin: 8px 0 0;
  font-size: 0.875rem;
}

.codigo {
  font-size: 1.125rem;
  margin-bottom: 16px;
}
.codigo strong {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  color: var(--accent);
}

.link-box {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.link-box input {
  flex: 1;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.875rem;
}
.link-box button {
  width: auto;
  padding: 12px 16px;
}

.share {
  margin-top: 4px;
  background: #25d366;
  color: #05210f;
}