@import url('https://fonts.googleapis.com/css2?family=Caveat:wght@400;700&display=swap');

:root {
  --slot-col-1: 21%;
  --slot-col-2: 35%;
  --slot-col-3: 49%;
  --slot-col-4: 63%;
  --slot-col-5: 77%;
  --slot-row-1: 47%;
  --slot-row-2: 68%;
  --slot-size: 11%;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: sans-serif;
  overflow: hidden;
}

.page-bg {
  position: fixed;
  inset: 0;
  background: url('bg.png') center center / cover no-repeat;
  z-index: -1;
}

.card-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  width: 100%;
  max-width: 540px;
}

.card-container {
  width: 100%;
  aspect-ratio: 3 / 2;
}

.card {
  position: relative;
  width: 100%;
  height: 100%;
  background: url('card.png') center center / contain no-repeat;
}

.stamp-slot {
  position: absolute;
  width: var(--slot-size);
  aspect-ratio: 1 / 1;
  transform: translate(-50%, -50%);
}

.stamp-slot[data-index="0"] { left: var(--slot-col-1); top: var(--slot-row-1); }
.stamp-slot[data-index="1"] { left: var(--slot-col-2); top: var(--slot-row-1); }
.stamp-slot[data-index="2"] { left: var(--slot-col-3); top: var(--slot-row-1); }
.stamp-slot[data-index="3"] { left: var(--slot-col-4); top: var(--slot-row-1); }
.stamp-slot[data-index="4"] { left: var(--slot-col-5); top: var(--slot-row-1); }
.stamp-slot[data-index="5"] { left: var(--slot-col-1); top: var(--slot-row-2); }
.stamp-slot[data-index="6"] { left: var(--slot-col-2); top: var(--slot-row-2); }
.stamp-slot[data-index="7"] { left: var(--slot-col-3); top: var(--slot-row-2); }
.stamp-slot[data-index="8"] { left: var(--slot-col-4); top: var(--slot-row-2); }
.stamp-slot[data-index="9"] { left: var(--slot-col-5); top: var(--slot-row-2); }

.stamp-slot.earned {
  background: url('stamp-removebg.png') center center / contain no-repeat;
  animation: stamp-in 0.3s ease-out;
}

.stamp-slot.earned::before {
    content: attr(data-date);
    position: absolute;
    top: -10px;
    right: -4px;
    font-family: 'Caveat', cursive;
    font-size: 1rem;
    font-weight: 700;
    color: blue;
    /* background: rgba(255, 255, 255, 0.8); */
    padding: 1px 3px;
    border-radius: 3px;
    pointer-events: none;
}

@keyframes stamp-in {
  from {
    opacity: 0.5;
  }
  to {
    opacity: 1;
  }
}

.reward-text {
  position: absolute;
  bottom: 14%;
  left: 58%;
  transform: translateX(-50%);
  width: 60%;
  font-size: 0.6rem;
  color: #7a3a3a;
  text-align: center;
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.6);
}