body {
  background-color: #121212;
  color: #ffffff;
  font-family: "Segoe UI", sans-serif;
}

/* Cronómetro grande adaptable */
.display-timer {
  font-size: 12vw;
  line-height: 1;
}

/* Botones personalizados */
.custom-btn {
  background-color: #1f1f1f;
  color: #ffffff;
  border: 1px solid #333;
  padding: 0.75rem 2rem;
  font-size: 1.25rem;
  border-radius: 0.5rem;
  transition: all 0.2s ease-in-out;
}

.custom-btn:hover {
  background-color: #333333;
  border-color: #555555;
}

#flash-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
}

#flash-overlay.flash-green {
  background-color: rgba(40, 167, 69, 0.5);
  opacity: 1;
}

#flash-overlay.flash-red {
  background-color: rgba(220, 53, 69, 0.5);
  opacity: 1;
}

@keyframes flash-bg {
  from {
    background-color: #ffffff20;
  }
  to {
    background-color: #121212;
  }
}

/* Ajustes para inputs de color */
input[type="color"] {
  height: 3rem;
  padding: 0;
  border: none;
}

/* Ajuste de cards */
.card {
  border: none;
  border-radius: 0.75rem;
}
