/* ASCII only */ 
/* ====== Features: flip cards ====== */

.flip-grid{
  display: grid;
  grid-template-columns: repeat(4, minmax(220px, 1fr));
  gap: 20px;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Card with flip effect */
.flip-card{
  perspective: 1000px;
  height: 260px;
}
.flip-card-btn{
  appearance: none;
  border: 0;
  padding: 0;
  margin: 0;
  width: 100%;
  height: 100%;
  background: transparent;
  cursor: pointer;
  display: block;
  border-radius: 16px;
  outline-offset: 4px;
}
.flip-card-inner{
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform .6s ease;
  border-radius: 16px;
  background: #ffffff;

  /* (1) El borde vive en el envolvente → evita seams intermedios */
  border: 1px solid #e5e5e5 !important;
}

/* Hover (desktop only) */
@media (hover: hover) and (pointer: fine){
  .flip-card:hover .flip-card-inner{
    transform: rotateY(180deg);
  }
}

/* Click/tap state */
.flip-card.is-flipped .flip-card-inner{
  transform: rotateY(180deg);
}

/* Faces comunes */
.flip-face{
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: 16px;
  overflow: hidden;
  display: grid;
  gap: 0;
  min-height: 0;

  /* blindaje: sin bordes en caras */
  border: 0 !important;
}

/* ============ FRONT: imagen + franja del título (sin hueco) ============ */
.flip-front{
  /* flex quita rounding issues del 1fr */
  display: flex !important;
  flex-direction: column !important;
  background: #f7f9ff;
  border: 0 !important;
}

/* Contenedor de imagen: ocupa TODO el alto disponible */
.flip-front .image-wrap{
  position: relative;
  flex: 1 1 auto !important;
  width: 100%;
  min-height: 0 !important;
  line-height: 0 !important;
  background: #eef3ff;
  overflow: hidden;
  display: block;
  /* IMPORTANTE: ya NO hacemos solape negativo aquí */
  margin-bottom: 0 !important;
}

/* Imagen llenando el contenedor sin deformarse */
.flip-front .image-wrap img{
  display: block !important;
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;
  object-position: center !important;
}

/* Franja del título pegada a la imagen, sin borde superior */
.flip-front .title{
  position: relative !important;   /* necesario para el ::before */
  margin: 0 !important;
  padding: 12px 14px 14px !important;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .2px;
  color: #1f2937;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  background: linear-gradient(180deg, #ffffff 0%, #f3f6ff 100%) !important;
  border-top: 0 !important;        /* no crear línea */
}

/* (2) Cobertura anti-seam: 1px por ENCIMA del título */
.flip-front .title::before{
  content: "" !important;
  position: absolute !important;
  left: 0; right: 0;
  top: -1px;                      /* cubre el posible hueco de redondeo */
  height: 1px;
  /* igualamos el color con el inicio del gradiente del título */
  background: #ffffff !important;
  pointer-events: none;
}

/* ============ BACK: texto ============ */
.flip-back{
  background: linear-gradient(180deg, #ffffff 0%, #f6f8ff 100%) !important;
  transform: rotateY(180deg);
  padding: 16px !important;
  display: grid !important;
  gap: 8px !important;
  align-content: center !important;
  text-align: center !important;
  color: #374151 !important;
  border: 0 !important; /* el borde está en .flip-card-inner */
}
.flip-back h4{
  margin: 0 0 6px 0 !important;
  font-size: 16px;
  color: #111827 !important;
}
.flip-back p{
  margin: 0 auto !important;
  max-width: 90% !important;
  font-size: 14px;
  line-height: 1.45;
}

/* Focus visible */
.flip-card-btn:focus-visible .flip-card-inner{
  box-shadow: 0 0 0 3px rgba(57,105,181,.7), 0 8px 24px rgba(0,0,0,.18);
}

/* Responsive */
@media (max-width: 1000px){
  .flip-grid{ grid-template-columns: repeat(2, minmax(220px, 1fr)); }
}
@media (max-width: 540px){
  .flip-grid{ grid-template-columns: 1fr; }
  .flip-card{ height: 240px; }
}

#features > h2{
  text-align: center;
  max-width: 60ch;
  margin: 0 auto 16px;
}

/* Blindaje anti-desbordes de imágenes dentro de features */
#features img{
  max-width: 100%;
  height: auto;
  display: block;
}