/* ------------------------------------------------------------------ *\
   Lienzo — Herramientas de código QR (familia)
   Compartido por /herramientas/qr/ y sus 6 hijas.
   1. Espacio de trabajo   4. Formulario y campos
   2. Vista previa del QR  5. Ajustes de apariencia
   3. Estadísticas         6. Acciones y responsive
\* ------------------------------------------------------------------ */

/* 1. Espacio de trabajo ------------------------------------------------ */

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 1.4rem;
  margin-top: 2rem;
  align-items: start;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  overflow: hidden;
}

.panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--line);
}

.panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
}

/* 2. Vista previa del QR ------------------------------------------------ */

.qr-preview {
  display: grid;
  place-items: center;
  padding: clamp(1.6rem, 5vw, 2.6rem);
  background:
    linear-gradient(45deg, var(--bg-soft) 25%, transparent 25%, transparent 75%, var(--bg-soft) 75%) 0 0 / 20px 20px,
    linear-gradient(45deg, var(--bg-soft) 25%, transparent 25%, transparent 75%, var(--bg-soft) 75%) 10px 10px / 20px 20px,
    var(--bg);
}

.qr-lienzo {
  padding: 18px;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
  display: grid;
  place-items: center;
  transition: opacity 160ms ease;
}

.workspace[data-busy="true"] .qr-lienzo { opacity: 0.6; }

.qr-lienzo canvas {
  display: block;
  width: min(360px, 70vw);
  height: auto;
  image-rendering: pixelated;
}

.qr-preview__vacio {
  display: grid;
  place-items: center;
  gap: 0.6rem;
  padding: 3rem 1.5rem;
  color: var(--faint);
  text-align: center;
}

.qr-preview__vacio svg { width: 40px; height: 40px; opacity: 0.6; }

/* 3. Estadísticas -------------------------------------------------------- */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.9rem;
  padding: 1.1rem;
  border-top: 1px solid var(--line);
}

.stat { display: grid; gap: 0.2rem; min-width: 0; }

.stat__label {
  font: 700 0.68rem/1 var(--font-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
}

.stat__value {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-variant-numeric: tabular-nums;
}

.stat__value--small {
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--muted);
}

.error {
  margin: 1.1rem 1.1rem 0;
  padding: 0.8rem 1.1rem;
  border-radius: var(--radius);
  border: 1px solid color-mix(in oklab, var(--coral) 45%, transparent);
  background: color-mix(in oklab, var(--coral) 12%, transparent);
  color: var(--text);
  font-size: 0.92rem;
}

/* 4. Formulario y campos -------------------------------------------------- */

.sidebar {
  display: grid;
  gap: 1.2rem;
  position: sticky;
  top: 84px;
}

.settings {
  display: grid;
  gap: 1.1rem;
  padding: 1.1rem;
}

.field { display: grid; gap: 0.45rem; font-size: 0.9rem; }

.field__label {
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
  color: var(--muted);
  font-weight: 600;
}

.field__label output,
.field__label .contador {
  color: var(--violeta);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.field__hint { color: var(--faint); font-size: 0.8rem; }

.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field input[type="url"],
.field input[type="number"],
.field textarea,
.field select {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--text);
  font: inherit;
  font-family: var(--font-body);
}

.field textarea { resize: vertical; min-height: 5.5rem; }

.field input:focus-visible,
.field textarea:focus-visible,
.field select:focus-visible {
  outline: 2px solid var(--violeta);
  outline-offset: 1px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.switch {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  cursor: pointer;
}

.switch input { margin-top: 0.2rem; accent-color: var(--violeta); flex: 0 0 auto; }
.switch small { color: var(--faint); font-size: 0.79rem; display: block; margin-top: 0.1rem; }

.radiogroup { display: grid; gap: 0.5rem; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); }

.radiogroup label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease;
  font-size: 0.86rem;
}

.radiogroup label:has(input:checked) {
  border-color: var(--violeta);
  background: color-mix(in oklab, var(--violeta) 8%, transparent);
}

.radiogroup input { accent-color: var(--violeta); flex: 0 0 auto; }

/* 5. Ajustes de apariencia ------------------------------------------------ */

.campo-color {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.campo-color input[type="color"] {
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: none;
  cursor: pointer;
}

.campo-color input[type="text"] { flex: 1; }

/* 6. Acciones y responsive ------------------------------------------------ */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 1.1rem;
  border-top: 1px solid var(--line);
}

.actions .btn { flex: 1 1 auto; justify-content: center; }

.tool-note {
  margin-top: 1.4rem;
  color: var(--faint);
  font-size: 0.84rem;
  text-align: center;
}

@media (max-width: 1000px) {
  .workspace { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}

@media (max-width: 560px) {
  .actions .btn { flex-basis: 100%; }
  .field-row { grid-template-columns: 1fr; }
}

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