/* ==========================================================================
   Die Deutsche Brücke — Widget de acentuación
   Spanisch mit Eckbert · v1.0
   --------------------------------------------------------------------------
   Todos los valores derivan de la Guía de Estilo Maestra (secciones 01 y 02).
   Prefijo de clase: .bw-   Prefijo de variable: --bw-
   No hay ningún selector de elemento suelto: el widget no puede contaminar
   el resto de la página ni ser contaminado por ella.
   ========================================================================== */

.bw {
  /* --- Paleta confirmada (Guía §02) ------------------------------------ */
  --bw-terracota:        #A8472C;
  --bw-terracota-dark:   #7E3520;
  --bw-terracota-tint:   #F1E1D7;
  --bw-teal:             #1E6E68;
  --bw-gold:             #C69A3E;
  --bw-cream:            #FBF6EE;
  --bw-ink:              #2B211B;
  --bw-warm-grey:        #6E6156;

  /* --- Tipografía (Guía §02) ------------------------------------------- */
  --bw-font-display: "Anton", "Montserrat", system-ui, sans-serif;
  --bw-font-serif:   "Playfair Display", Georgia, serif;
  --bw-font-body:    "Montserrat", system-ui, -apple-system, sans-serif;

  /* --- Escala de tamaños. Mínimos +45: cuerpo 19px / 18px móvil -------- */
  --bw-size-h2:      clamp(26px, 4.2vw, 40px);
  --bw-size-h3:      clamp(20px, 2.4vw, 26px);
  --bw-size-body:    clamp(18px, 1.4vw, 20px);
  --bw-size-small:   16px;
  --bw-size-legal:   14px;
  --bw-size-word-de: clamp(30px, 5.5vw, 46px);
  --bw-size-word-es: clamp(38px, 8vw, 68px);

  /* --- Ritmo editorial: el aire es el lujo (Guía §01) ------------------ */
  --bw-space-1: 8px;
  --bw-space-2: 16px;
  --bw-space-3: 24px;
  --bw-space-4: 40px;
  --bw-space-5: 64px;
  --bw-space-6: 96px;

  --bw-radius:  4px;   /* casi recto: papel, no tarjeta de software */
  --bw-tap:     48px;  /* área táctil mínima */
  --bw-measure: 62ch;  /* ancho de línea 65-70 caracteres */

  /* --- Base ------------------------------------------------------------ */
  font-family: var(--bw-font-body);
  font-size: var(--bw-size-body);
  line-height: 1.65;
  color: var(--bw-ink);
  background-color: var(--bw-cream);
  /* Micro-textura de papel: 4 % de opacidad, debe intuirse, no verse. */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  padding: var(--bw-space-5) var(--bw-space-3);
  container-type: inline-size;
  -webkit-font-smoothing: antialiased;
}

.bw *,
.bw *::before,
.bw *::after { box-sizing: border-box; }

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

/* --------------------------------------------------------------------------
   Cabecera
   -------------------------------------------------------------------------- */

.bw__eyebrow {
  font-family: var(--bw-font-body);
  font-size: var(--bw-size-small);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bw-warm-grey);
  margin: 0 0 var(--bw-space-2);
}

.bw__title {
  font-family: var(--bw-font-serif);
  font-style: italic;
  font-weight: 500;
  font-size: var(--bw-size-h2);
  line-height: 1.15;
  color: var(--bw-terracota);
  margin: 0 0 var(--bw-space-2);
}

/* Filete de pincel bajo el título — trazo irregular, no línea de 1 px */
.bw__rule {
  display: block;
  width: 96px;
  height: 9px;
  margin-bottom: var(--bw-space-3);
  color: var(--bw-terracota);
}

.bw__lead {
  max-width: var(--bw-measure);
  color: var(--bw-ink);
  margin: 0 0 var(--bw-space-4);
}

/* --------------------------------------------------------------------------
   Progreso — filete editorial, no barra de videojuego
   -------------------------------------------------------------------------- */

.bw__progress {
  display: flex;
  align-items: center;
  gap: var(--bw-space-2);
  margin-bottom: var(--bw-space-4);
}

.bw__progress-label {
  font-size: var(--bw-size-small);
  font-weight: 600;
  color: var(--bw-warm-grey);
  white-space: nowrap;
}

.bw__progress-track {
  flex: 1;
  height: 3px;
  background: var(--bw-terracota-tint);
}

.bw__progress-fill {
  display: block;
  height: 100%;
  width: 0;
  background: var(--bw-terracota);
  transition: width 480ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* --------------------------------------------------------------------------
   Paso 1 · El puente alemán
   -------------------------------------------------------------------------- */

.bw__step-label {
  font-size: var(--bw-size-small);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bw-warm-grey);
  margin: 0 0 var(--bw-space-1);
}

.bw__german {
  border-left: 3px solid var(--bw-gold);
  padding-left: var(--bw-space-3);
  margin-bottom: var(--bw-space-4);
}

.bw__word-de {
  font-family: var(--bw-font-display);
  font-size: var(--bw-size-word-de);
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--bw-ink);
  margin: var(--bw-space-1) 0 var(--bw-space-2);
}

.bw__syl-sep { color: var(--bw-warm-grey); font-weight: 400; }
.bw__syl--stress { color: var(--bw-terracota); }

.bw__bridge {
  max-width: var(--bw-measure);
  color: var(--bw-warm-grey);
  margin: 0;
}

/* --------------------------------------------------------------------------
   Paso 2 · La palabra española
   -------------------------------------------------------------------------- */

.bw__prompt {
  max-width: var(--bw-measure);
  font-weight: 600;
  margin: 0 0 var(--bw-space-3);
}

.bw__word-es {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: center;
  gap: 2px;
  margin: 0 0 var(--bw-space-3);
  padding: var(--bw-space-3) var(--bw-space-2);
  background: var(--bw-terracota-tint);
  border-radius: var(--bw-radius);
}

.bw__letter {
  font-family: var(--bw-font-display);
  font-size: var(--bw-size-word-es);
  line-height: 1;
  color: var(--bw-ink);
  background: none;
  border: 0;
  padding: 0 2px;
  min-width: 0.55em;
  text-align: center;
}

/* Vocales: son botones reales, no adornos */
.bw__letter--vowel {
  cursor: pointer;
  border-bottom: 3px solid rgba(168, 71, 44, 0.35);
  min-height: var(--bw-tap);
  min-width: max(0.6em, 44px);
  transition: color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.bw__letter--vowel:hover {
  color: var(--bw-terracota);
  border-bottom-color: var(--bw-terracota);
  transform: translateY(-2px);
}

.bw__letter--selected { color: var(--bw-terracota); }
.bw__letter--correct  { color: var(--bw-teal); border-bottom-color: var(--bw-teal); }
.bw__letter--wrong    { color: var(--bw-terracota-dark); border-bottom-color: var(--bw-terracota-dark); }

/* --------------------------------------------------------------------------
   Botones
   -------------------------------------------------------------------------- */

.bw__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--bw-space-2);
  align-items: center;
}

.bw__btn {
  font-family: var(--bw-font-body);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.2;
  min-height: var(--bw-tap);
  padding: 14px 28px;
  border-radius: var(--bw-radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.bw__btn--primary {
  background: var(--bw-terracota);
  color: var(--bw-cream);
}
.bw__btn--primary:hover { background: var(--bw-terracota-dark); }

.bw__btn--secondary {
  background: transparent;
  color: var(--bw-teal);
  border-color: var(--bw-teal);
}
.bw__btn--secondary:hover { background: var(--bw-teal); color: var(--bw-cream); }

.bw__btn--quiet {
  background: transparent;
  color: var(--bw-warm-grey);
  border-color: rgba(110, 97, 86, 0.4);
}
.bw__btn--quiet:hover { color: var(--bw-ink); border-color: var(--bw-ink); }

/* Audio: guiño al sello QR del libro, en oro */
.bw__audio {
  display: inline-flex;
  align-items: center;
  gap: var(--bw-space-1);
  min-height: var(--bw-tap);
  padding: 8px 14px;
  font-size: var(--bw-size-small);
  font-weight: 600;
  color: var(--bw-gold);
  background: none;
  border: 1px solid rgba(198, 154, 62, 0.5);
  border-radius: var(--bw-radius);
  cursor: pointer;
}
.bw__audio:hover { color: var(--bw-ink); border-color: var(--bw-gold); }

/* --------------------------------------------------------------------------
   Paso 3 · Resolución
   -------------------------------------------------------------------------- */

.bw__feedback {
  border-left: 3px solid var(--bw-teal);
  padding: var(--bw-space-2) 0 var(--bw-space-2) var(--bw-space-3);
  margin: var(--bw-space-3) 0 var(--bw-space-4);
  max-width: var(--bw-measure);
}

.bw__feedback--wrong { border-left-color: var(--bw-terracota); }

.bw__verdict {
  font-family: var(--bw-font-serif);
  font-style: italic;
  font-size: var(--bw-size-h3);
  color: var(--bw-teal);
  margin: 0 0 var(--bw-space-1);
}
.bw__feedback--wrong .bw__verdict { color: var(--bw-terracota); }

.bw__why { margin: 0 0 var(--bw-space-2); }
.bw__why em     { font-style: italic; color: var(--bw-terracota); }
.bw__why strong { font-weight: 700; }

.bw__rule-line {
  display: inline-block;
  font-size: var(--bw-size-small);
  font-weight: 600;
  color: var(--bw-warm-grey);
  border-top: 1px solid var(--bw-terracota-tint);
  padding-top: var(--bw-space-1);
  margin: 0;
}

/* --------------------------------------------------------------------------
   Resultado + captación
   -------------------------------------------------------------------------- */

.bw__result-headline {
  font-family: var(--bw-font-serif);
  font-style: italic;
  font-size: var(--bw-size-h2);
  line-height: 1.2;
  color: var(--bw-terracota);
  margin: 0 0 var(--bw-space-2);
}

.bw__score {
  font-family: var(--bw-font-display);
  font-size: clamp(40px, 7vw, 64px);
  line-height: 1;
  color: var(--bw-ink);
  margin: 0 0 var(--bw-space-2);
}

.bw__result-body {
  max-width: var(--bw-measure);
  margin: 0 0 var(--bw-space-5);
}

.bw__capture {
  background: var(--bw-terracota-tint);
  border-radius: var(--bw-radius);
  padding: var(--bw-space-4);
  margin-bottom: var(--bw-space-4);
}

.bw__capture-title {
  font-family: var(--bw-font-serif);
  font-style: italic;
  font-size: var(--bw-size-h3);
  color: var(--bw-terracota-dark);
  margin: 0 0 var(--bw-space-2);
}

.bw__capture-body {
  max-width: var(--bw-measure);
  margin: 0 0 var(--bw-space-3);
}

.bw__field { margin-bottom: var(--bw-space-3); }

/* Etiqueta ENCIMA del campo — nunca placeholder como única etiqueta */
.bw__label {
  display: block;
  font-size: var(--bw-size-small);
  font-weight: 600;
  color: var(--bw-ink);
  margin-bottom: 6px;
}

.bw__input {
  width: 100%;
  min-height: var(--bw-tap);
  padding: 12px 14px;
  font-family: var(--bw-font-body);
  font-size: 18px;
  color: var(--bw-ink);
  background: var(--bw-cream);
  border: 1px solid var(--bw-warm-grey);
  border-radius: var(--bw-radius);
}
.bw__input:hover { border-color: var(--bw-ink); }
.bw__input[aria-invalid="true"] { border-color: var(--bw-terracota); border-width: 2px; }

.bw__consent {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: var(--bw-size-small);
  line-height: 1.55;
  margin-bottom: var(--bw-space-3);
  max-width: var(--bw-measure);
}

/* Casilla grande: manos +45, nunca premarcada */
.bw__checkbox {
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  margin-top: 2px;
  accent-color: var(--bw-terracota);
}

.bw__link { color: var(--bw-teal); text-underline-offset: 3px; }
.bw__link:hover { color: var(--bw-terracota); }

.bw__error {
  font-size: var(--bw-size-small);
  font-weight: 600;
  color: var(--bw-terracota-dark);
  margin: 6px 0 0;
}

.bw__legal {
  font-size: var(--bw-size-legal);
  color: var(--bw-warm-grey);
  margin: var(--bw-space-2) 0 0;
}

/* CTA al libro — subordinado, en teal, nunca compite con el CTA de compra */
.bw__book {
  border-top: 1px solid var(--bw-terracota-tint);
  padding-top: var(--bw-space-3);
}
.bw__book-title {
  font-size: var(--bw-size-h3);
  font-weight: 700;
  margin: 0 0 var(--bw-space-1);
}
.bw__book-body {
  max-width: var(--bw-measure);
  color: var(--bw-warm-grey);
  margin: 0 0 var(--bw-space-3);
}

/* --------------------------------------------------------------------------
   Accesibilidad y estados
   -------------------------------------------------------------------------- */

.bw :focus-visible {
  outline: 3px solid var(--bw-teal);
  outline-offset: 3px;
}

.bw__sr {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.bw [hidden] { display: none !important; }

/* Aparición sobria al cambiar de paso. Nada de parallax ni carruseles. */
.bw__panel { animation: bw-fade 380ms cubic-bezier(0.22, 0.61, 0.36, 1) both; }

@keyframes bw-fade {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .bw *, .bw *::before, .bw *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* --------------------------------------------------------------------------
   Responsive — mobile-first real: una columna cómoda, CTAs a mano
   -------------------------------------------------------------------------- */

@container (max-width: 560px) {
  .bw { padding: var(--bw-space-4) var(--bw-space-3); }
  .bw__actions .bw__btn { width: 100%; }
  .bw__capture { padding: var(--bw-space-3); }
}

@media (max-width: 560px) {
  .bw { padding: var(--bw-space-4) var(--bw-space-3); }
  .bw__actions .bw__btn { width: 100%; }
  .bw__capture { padding: var(--bw-space-3); }
}