:root {
  --bg: #0b1220;
  --card: #121a2a;
  --text: #e8eefc;
  --muted: #b7c3e6;
  --border: #23304d;
  --focus: #9db7ff;
  --danger: #ff7a7a;
  --ok: #7dffb2;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
  background: radial-gradient(1200px 800px at 20% 10%, #172241 0%, var(--bg) 55%);
  color: var(--text);
}

.page {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 16px;
}

.card {
  width: 100%;
  max-width: 760px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 40%), var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

.header {
  margin-bottom: 16px;
}

.title {
  font-size: clamp(1.35rem, 2.5vw, 1.9rem);
  margin: 0 0 6px;
  letter-spacing: 0.2px;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: clamp(0.95rem, 1.6vw, 1.02rem);
}

.form {
  display: grid;
  gap: 14px;
}

.field {
  display: grid;
  gap: 8px;
}

.label {
  font-weight: 650;
  font-size: 0.95rem;
}

.hint {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.35;
}

.control {
  width: 100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.18);
  color: var(--text);
  font-size: 1rem;
  outline: none;
}

.control:focus {
  border-color: var(--focus);
  box-shadow: 0 0 0 4px rgba(157, 183, 255, 0.18);
}

.actions {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr;
}

.button {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 14px;
  background: rgba(157, 183, 255, 0.12);
  color: var(--text);
  font-weight: 650;
  cursor: pointer;
  transition: transform 0.02s ease, background 0.15s ease;
}

.button:hover {
  background: rgba(157, 183, 255, 0.2);
}

.button:active {
  transform: translateY(1px);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.06);
}

.result {
  margin-top: 8px;
  border-top: 1px solid var(--border);
  padding-top: 14px;
  display: grid;
  gap: 10px;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.result-label {
  color: var(--muted);
  font-weight: 650;
}

.result-value {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 800;
  letter-spacing: 0.6px;
  word-break: break-word;
}

.status {
  font-weight: 700;
  word-break: break-word;
}

.status.ok {
  color: var(--ok);
}

.status.error {
  color: var(--danger);
}

.status.neutral {
  color: inherit;
}

.footer {
  border-top: 1px solid var(--border);
  margin-top: 16px;
  padding-top: 14px;
}

.footer-text {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.35;
}

/* Tablet+: más aire y botones en línea */
@media (min-width: 600px) {
  .page {
    padding: 22px;
  }

  .card {
    padding: 22px;
  }

  .actions {
    grid-template-columns: 1fr 1fr;
  }
}

/* Desktop+: formulario en 2 columnas (modo + input) */
@media (min-width: 860px) {
  .form {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .actions,
  .result,
  .footer {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .button {
    transition: none;
  }
}