:root {
  --bg: #0f1115;
  --card: #181b22;
  --border: #2a2f3a;
  --text: #e6e8ec;
  --muted: #9aa3b2;
  --accent: #4f8cff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

header {
  padding: 3rem 1.5rem 2rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

header h1 { margin: 0; font-size: 2.2rem; letter-spacing: -0.02em; }
.sub { color: var(--muted); margin: 0.5rem 0 0; }

.estado {
  display: inline-block;
  margin: 1rem 0 0;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--accent);
  font-size: 0.8rem;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.card h2 { margin-top: 0; font-size: 1.25rem; }

code {
  background: #0b0d11;
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

form { display: flex; flex-direction: column; }

label {
  margin-top: 1rem;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
  color: var(--muted);
}

input, textarea, select {
  background: #0b0d11;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem 0.85rem;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
}

input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: transparent;
}

textarea { resize: vertical; }

button {
  margin-top: 1.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0.8rem 1.2rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

button:hover { background: #3d7aef; }

footer {
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--muted);
  font-size: 0.875rem;
  border-top: 1px solid var(--border);
}

.version {
  margin: 0.4rem 0 0;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.75rem;
  opacity: 0.6;
}

.result { list-style: none; padding: 0; }
.result li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
}
.result strong { color: var(--muted); font-weight: 500; }

.back {
  display: inline-block;
  margin-top: 1.5rem;
  color: var(--accent);
  text-decoration: none;
}
.back:hover { text-decoration: underline; }