:root {
  color-scheme: light dark;
  --bg: #0f1419;
  --panel: #1a2332;
  --text: #e8eef7;
  --muted: #9fb0c7;
  --accent: #3dd6c6;
  --accent-2: #6ea8ff;
  --danger: #ff7b7b;
  --ok: #7dffb2;
  font-family: "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: linear-gradient(180deg, #0b1017 0%, #121a26 100%);
  color: var(--text);
  min-height: 100vh;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid #243247;
  background: rgba(10, 14, 20, 0.85);
  backdrop-filter: blur(8px);
}

.brand { display: flex; gap: 1rem; align-items: center; }
.brand-mark {
  width: 48px; height: 48px; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #041018; font-weight: 700;
}
h1 { margin: 0; font-size: 1.25rem; }
.subtitle { margin: 0.2rem 0 0; color: var(--muted); font-size: 0.9rem; }

.panel-title {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 600;
}

.panel-hint {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.45;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
}

.demo-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
  text-align: left;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  border: 1px solid #33445f;
  background: #0f1724;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.15s;
}

.demo-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.demo-card-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.demo-id {
  font-size: 0.7rem;
  font-family: ui-monospace, monospace;
  color: var(--accent-2);
}

.demo-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.demo-hint {
  font-size: 0.75rem;
  color: var(--muted);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.form-grid label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.form-grid input,
.form-grid select {
  border-radius: 8px;
  border: 1px solid #33445f;
  background: #0f1724;
  color: var(--text);
  padding: 0.5rem 0.65rem;
  font: inherit;
}

.layout {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem;
  display: grid;
  gap: 1rem;
}

.panel {
  background: var(--panel);
  border: 1px solid #2a3850;
  border-radius: 14px;
  padding: 1rem 1.25rem;
}

.disclaimer {
  border-color: #4a607f;
  color: var(--muted);
  line-height: 1.5;
}

label { display: block; margin-bottom: 0.5rem; font-weight: 600; }

textarea {
  width: 100%;
  border-radius: 10px;
  border: 1px solid #33445f;
  background: #0f1724;
  color: var(--text);
  padding: 0.75rem;
  resize: vertical;
  font: inherit;
}

.presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin: 0.75rem 0 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

button {
  border: 1px solid #3a506e;
  background: #152033;
  color: var(--text);
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  cursor: pointer;
  font: inherit;
}
button:hover { border-color: var(--accent-2); }
button.primary {
  background: linear-gradient(135deg, #1f6f68, #2a5ea8);
  border: none;
  font-weight: 600;
  padding: 0.65rem 1.2rem;
}
button:disabled { opacity: 0.6; cursor: wait; }

.status { min-height: 1.25rem; color: var(--muted); }
.status.error { color: var(--danger); }

.resultado.hidden { display: none; }
.resultado h2 { margin-top: 0; }

dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.35rem 1rem;
}
dt { color: var(--muted); }
.veredicto-ok { color: var(--ok); font-weight: 700; }
.veredicto-veto { color: #ffd27d; font-weight: 700; }
.veredicto-alarma { color: var(--danger); font-weight: 700; }

pre {
  background: #0b111b;
  border-radius: 10px;
  padding: 0.75rem;
  overflow: auto;
  font-size: 0.85rem;
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 2rem 1rem 2.5rem;
}

@media (max-width: 640px) {
  .site-header { flex-direction: column; align-items: flex-start; }
  .nav-guanes a { margin-left: 0; margin-right: 1rem; }
}