/* ==========================================
   ADVENTTIKALENTERI – VALMIS JA ITSESEISOVA
   ========================================== */

/* Wrapper irrotetaan sivun left/right float-layoutista */
.advent-wrapper {
  width: 100%;
  display: block;
  margin: 0 auto;
  padding: 0;
  overflow: hidden;
  box-sizing: border-box;
}

/* Taustakuva */
.advent {
  width: 100%;
  background-image: url('kuvat/joulu25.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 20px;
  border-radius: 10px;
  box-sizing: border-box;
}

.calendar {
  width: 100%;
  margin: 0 auto;
  box-sizing: border-box;
}

/* ========== GRID 6 × 4 ========== */

.doors {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  width: 100%;
  box-sizing: border-box;
  padding: 10px 0;
}

/* ========== LUUKKU ========== */

.door {
  width: 100%;
  width: 120px !important;
  height: 90px !important;
  aspect-ratio: 4/3;      /* Neliöluukku */
  position: relative;
  perspective: 800px;
  margin: 0 auto;
  box-sizing: border-box;
}

.door-inner {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.8s ease;
}

/* Etu- ja takapuoli */

.door-front,
.door-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 6px;
  border: 2px solid #334;
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  align-items: center;
}

.door-front {
  background: rgba(240, 240, 240, 0.2);
  font-size: 1.5rem;
  font-weight: bold;
  color: #222;
  backdrop-filter: blur(1px);  /* kaunis huurrefekti */
}

.door-back {
  transform: rotateY(180deg);
  background: rgba(255, 255, 255, 0.0); /* täysin läpinäkyvä */
  overflow: hidden;
}

.door-back img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: 6px;
}

/* Avautuva luukku */
.door.open .door-inner {
  transform: rotateY(180deg);
}

.door:hover .door-front {
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(2px);
  border-color: #fff;
  transform: scale(1.04);
}



/* ========== RESPONSIVE (vain jos näyttö on pieni) ========== */

@media (max-width: 900px) {
  .doors {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 600px) {
  .doors {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 450px) {
  .doors {
    grid-template-columns: repeat(2, 1fr);
  }
}