/* Números a Letras Fácil — estilos propios de la suite.
   Se apoya en las variables y componentes ya definidos en styles.css
   (--accent, .card, .chip, .btn, .faq-item, etc.) */

.num-tool { max-width: 760px; margin-inline: auto; }

/* Acceso rápido a las otras herramientas de la suite (parte superior del index) */
.quicklinks-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: .6rem; margin-top: 1.3rem; }
.quicklink {
  display: flex; align-items: center; gap: .55rem;
  padding: .65rem .9rem;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  border-radius: var(--radius-sm);
  font-size: .86rem; font-weight: 600; color: var(--text);
  transition: border-color .15s ease, color .15s ease, transform .15s ease;
}
.quicklink:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.quicklink-icon { font-size: 1.1rem; flex: none; }

@media (min-width: 620px) {
  .quicklinks-row { grid-template-columns: repeat(4, auto); justify-content: start; }
}

.num-lang-row { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.1rem; }

.num-input-row { display: flex; flex-direction: column; gap: .4rem; margin-bottom: .8rem; }
.num-label { font-size: .82rem; font-weight: 600; color: var(--text-muted); }
.num-input {
  width: 100%;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: .85rem 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 3vw, 1.5rem);
  font-variant-numeric: tabular-nums;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.num-input:focus-visible { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.num-input.is-invalid { border-color: var(--danger); }

.chip-sm { padding: .35rem .7rem; font-size: .78rem; min-height: auto; }

.num-error { color: var(--danger); font-weight: 600; font-size: .88rem; margin: .9rem 0 0; }

.num-result {
  margin-top: 1.3rem;
  padding: clamp(1rem, 3vw, 1.4rem);
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  border: 1px solid transparent;
}
.num-result-label { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--accent-strong); margin-bottom: .5rem; }
.num-result-text { font-size: clamp(1.05rem, 2.6vw, 1.3rem); font-weight: 600; line-height: 1.5; color: var(--text); margin-bottom: 1rem; overflow-wrap: anywhere; }

/* Resultado "desnudo" (sin etiqueta ni botón interno), usado en números romanos */
.num-result:empty { display: none; }
#r2rResult, #romanResult {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 700;
  color: var(--accent-strong);
  letter-spacing: .02em;
}

/* Opciones adicionales (moneda, ordinales) */
.num-options-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-bottom: .9rem; }
.num-options-row .field { display: flex; flex-direction: column; gap: .35rem; flex: 1; min-width: 160px; }
.num-options-row label { font-size: .82rem; font-weight: 600; color: var(--text-muted); }
.num-options-row select {
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: .6rem .75rem;
  font-size: .92rem;
}

/* Números romanos: dos columnas */
.roman-grid { display: grid; grid-template-columns: 1fr; gap: 1.4rem; }
.roman-col { display: flex; flex-direction: column; gap: .5rem; }
.roman-col h3 { font-size: .95rem; }
.roman-divider { border: none; border-top: 1px solid var(--border); margin: .2rem 0; }

@media (min-width: 720px) {
  .roman-grid { grid-template-columns: 1fr 1fr; }
}