/* ======================================================
   FALLTEM — Cálculo amable
   Estilos específicos del juego
   Tokens y base en /css/falltem-tokens.css
   ====================================================== */

/* ======================================================
   Botón de ayuda flotante (afinado visual)
   ====================================================== */

.btn-ayuda {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #ffffff;
  color: #111827;
  font-weight: 900;
  font-size: 1rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(15, 23, 42, .18);
  text-shadow: 0 1px 1px rgba(0, 0, 0, .35);
}
.btn-ayuda:hover {
  background: #e5f4ff;
}
.btn-ayuda:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

/* ======================================================
   Tarjeta principal (card)
   ====================================================== */

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 2px 10px rgba(15, 23, 42, .06);
}

/* ======================================================
   Controles (operación / rondas / dificultad / botones)
   ====================================================== */

.controles {
  display: grid;
  grid-template-columns: 1fr;
  gap: .9rem 1rem;
  align-items: flex-end;
  margin-bottom: calc(var(--space) * 1.1);
}

.control label {
  display: block;
  font-weight: 900;
  margin-bottom: .35rem;
}

/* Hint bajo los selects */
.control__hint {
  margin: .35rem 0 0;
  font-size: .82rem;
  color: var(--muted);
}

/* Selects genéricos (solo aplica a los que no tienen Tailwind sobreecribiendo todo) */
select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: .9rem;
  padding: .85rem 1rem;
  width: 100%;
  font-size: 1.05rem;
  background-image: url("data:image/svg+xml;utf8,<svg fill='currentColor' xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path d='M5 7l5 5 5-5H5z'/></svg>");
  background-repeat: no-repeat;
  background-position: right .85rem center;
  background-size: 1rem 1rem;
}
select:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* Botonera de controles */
.control.buttons {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.control.buttons .btn {
  width: 100%;
  min-width: 0;
  padding-block: .95rem;
  border-radius: 999px;
}

#btnOtroJuego {
  background: var(--btn-primary-bg) !important;
  color: var(--btn-primary-fg) !important;
  border-color: var(--btn-primary-bg) !important;
}

/* Pequeño ajuste exclusivo para el select de rondas */
.control--rondas select {
  margin-bottom: 2px;
}

/* Layout responsive de controles (4 columnas) */
@media (min-width: 720px) {
  .controles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ======================================================
   Botones genéricos
   ====================================================== */

.btn {
  border: 0;
  border-radius: 14px;
  cursor: pointer;
  font-weight: 900;
  padding: .85rem 1.15rem;
  min-height: 46px;
  font-size: 1.02rem;
  transition:
    transform .08s ease,
    filter .15s ease,
    box-shadow .15s ease,
    background-color .15s ease,
    color .15s ease;
}
.btn:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
}
.btn:active {
  transform: translateY(0);
}
.btn:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.btn.principal {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-fg);
}
.btn.secundario {
  background: var(--btn-sec-bg);
  color: var(--btn-sec-fg);
}
.btn.texto {
  background: transparent;
  color: var(--muted);
  padding-inline: 0;
  font-weight: 700;
}

/* Foco claro en el botón principal inicial */
#btnComenzar:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

/* ======================================================
   Juego / Enunciado
   ====================================================== */

.juego {
  margin-top: .5rem;
}

.enunciado {
  font-size: clamp(2rem, 2.2vw + 1.2rem, 3rem);
  font-weight: 900;
  text-align: center;
  letter-spacing: 0;
  margin: .4rem 0 1.1rem;
}

/* Tamaño sutil exclusivo para el mensaje inicial */
.enunciado--inicio {
  font-size: 1.1rem !important;   /* ~ la mitad del título */
  font-weight: 600 !important;
  opacity: .85;
  margin-top: .5rem;
}

/* ======================================================
   Opciones de respuesta
   ====================================================== */

.opciones {
  display: grid;
  grid-template-columns: 1fr;
  gap: .8rem;
}

@media (min-width: 640px) {
  .opciones {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.opcion-btn {
  text-align: left;
  display: flex;
  align-items: center;
  gap: .6rem;
  background: var(--card);
  color: var(--fg);
  border: 2px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.1rem;
  font-weight: 800;
  font-size: clamp(1.05rem, .6vw + 1rem, 1.25rem);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, .08);
  transition:
    transform .12s ease,
    filter .15s ease,
    border-color .15s ease,
    box-shadow .15s ease,
    background-color .15s ease;
}
.opcion-btn:hover {
  filter: brightness(1.03);
  transform: translateY(-1px);
}
.opcion-btn[aria-disabled="true"] {
  cursor: default;
  opacity: .85;
}
.opcion-btn:focus-visible {
  outline: none;
  border-color: var(--focus);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--focus) 45%, transparent);
}
.opcion-btn.is-selected {
  border-color: var(--focus);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--focus) 35%, transparent);
  background: color-mix(in oklab, var(--focus) 10%, var(--card));
}
.opcion-btn.ok {
  border-color: var(--ok);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--ok) 35%, transparent);
  background: color-mix(in oklab, var(--ok) 12%, var(--card));
}
.opcion-btn.bad {
  border-color: var(--bad);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--bad) 35%, transparent);
  background: color-mix(in oklab, var(--bad) 8%, var(--card));
}

/* ======================================================
   Feedback / Acciones finales
   ====================================================== */

.feedback {
  margin-top: .8rem;
  text-align: center;
  min-height: 1.4em;
}
.feedback.muted {
  color: var(--muted);
}

.final-actions {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  align-items: center;
}

/* ======================================================
   Timer (solo estados especiales y animación)
   ====================================================== */

.timer-alert {
  color: var(--bad);
  font-weight: 900;
}

#timerFill[data-level="warn"] {
  background: #f59e0b;
}
#timerFill[data-level="alert"] {
  background: var(--bad);
}

@media (prefers-reduced-motion: no-preference) {
  .timer-pulse {
    animation: pulse .8s ease-in-out infinite;
  }
  @keyframes pulse {
    0%   { transform: scale(1); }
    50%  { transform: scale(1.06); }
    100% { transform: scale(1); }
  }
}

/* ======================================================
   Footer
   ====================================================== */

.page-footer {
  margin-top: 1.2rem;
  font-size: .8rem;
  color: var(--muted);
  text-align: center;
}
.page-footer a {
  color: inherit;
  font-weight: 700;
}

/* ======================================================
   Accesibilidad
   ====================================================== */

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0,0,0,0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Forzar que el modal se oculte cuando tiene el atributo hidden */
#aboutModal[hidden] {
  display: none !important;
}

/* ======================================================
   Modal de ayuda (2 solapas)
   ====================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 50;
}

.modal-card {
  background: var(--card);
  color: var(--fg);
  border-radius: 16px;
  padding: 1.5rem 1.75rem;
  max-width: 640px;
  width: 100%;
  border: 1px solid var(--border);
  box-shadow: 0 20px 40px rgba(15, 23, 42, .32);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}
.modal-header h2 {
  margin: 0;
  font-size: 1.4rem;
}

.modal-close {
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--muted);
}
.modal-close:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* Tabs del modal */
.modal-tabs {
  display: flex;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}
.tab-btn {
  border: 0;
  background: transparent;
  padding: 0 0 .5rem;
  font-weight: 700;
  font-size: .95rem;
  cursor: pointer;
  color: var(--muted);
  border-bottom: 2px solid transparent;
}
.tab-btn--active {
  color: var(--fg);
  border-bottom-color: var(--btn-primary-bg);
}

/* Contenido modal */
.modal-text {
  margin: 0 0 .75rem;
  font-size: .95rem;
  color: var(--fg);
}
.modal-list {
  margin: 0 0 .75rem;
  padding-left: 1.2rem;
  font-size: .92rem;
  color: var(--fg);
}
.modal-list--ordered {
  list-style: decimal;
}
.modal-note {
  margin: 0 0 .35rem;
  font-size: .78rem;
  color: var(--muted);
}
.modal-version {
  margin: 0 0 .5rem;
  font-size: .78rem;
  color: var(--muted);
}
.modal-actions {
  margin-top: 1rem;
  display: flex;
  justify-content: flex-end;
}

/* ======================================================
   Responsive fino
   ====================================================== */

@media (max-width: 640px) {
  .enunciado {
    font-size: 1.75rem;
  }
  .opcion-btn {
    font-size: 1rem;
    padding: .85rem 1rem;
  }
}