* {
  box-sizing: border-box;
}

:root {
  --bg: hsl(0, 0%, 10%);
  --min-size: 400px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 0;
  margin: 0;
  overflow-y: hidden;
  background: var(--bg);
}

.drag-proxy {
  visibility: hidden;
  position: absolute;
}

.controls {
  position: absolute;
  top: calc(50% + clamp(var(--min-size), 20vmin, 20vmin));
  left: 50%;
  transform: translate(-50%, -50%) scale(1.5);
  display: flex;
  justify-content: space-between;
  min-width: var(--min-size);
  height: 44px;
  width: 20vmin;
  z-index: 300;
}

button {
  height: 48px;
  width: 48px;
  border-radius: 50%;
  position: absolute;
  top: 0%;
  outline: transparent;
  cursor: pointer;
  background: none;
  appearance: none;
  border: 0;
  transition: transform 0.1s;
  transform: translate(0, calc(var(--y, 0)));
}

button:before {
  border: 2px solid hsl(0, 0%, 90%);
  background: linear-gradient(hsla(0, 0%, 80%, 0.65), hsl(0, 0%, 0%)) hsl(0, 0%, 0%);
  content: '';
  box-sizing: border-box;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  height: 80%;
  width: 80%;
  border-radius: 50%;
}

button:active:before {
  background: linear-gradient(hsl(0, 0%, 0%), hsla(0, 0%, 80%, 0.65)) hsl(0, 0%, 0%);
}

button:nth-of-type(1) {
  right: 100%;
}

button:nth-of-type(2) {
  left: 100%;
}

button span {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

button:hover {
  --y: -5%;
}

button svg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(0deg) translate(2%, 0);
  height: 30%;
  fill: hsl(0, 0%, 90%);
}

button:nth-of-type(1) svg {
  transform: translate(-50%, -50%) rotate(180deg) translate(2%, 0);
}

.scroll-icon {
  height: 30px;
  position: fixed;
  top: 1rem;
  right: 1rem;
  color: hsl(0, 0%, 90%);
  animation: action 4s infinite;
}

@keyframes action {
  0%, 25%, 50%, 100% {
    transform: translate(0, 0);
  }
  12.5%, 37.5% {
    transform: translate(0, 25%);
  }
}

.boxes {
  height: 100vh;
  width: 100%;
  overflow: hidden;
  position: absolute;
  transform-style: preserve-3d;
  perspective: 800px;
  touch-action: none;
}

.box {
  transform-style: preserve-3d;
  position: absolute;
  top: 50%;
  left: 50%;
  height: 40vmin;
  width: 40vmin;
  min-height: var(--min-size);
  min-width: var(--min-size);
  display: none;
  border-radius: 16px;
  background-image: var(--src, none);
  background-size: cover;
  background-position: center;
  background-color: #222;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  cursor: pointer;
  overflow: hidden;
}

.box-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 60%;
  background: linear-gradient(to top, rgba(0,0,0,0.95), rgba(0,0,0,0.4), transparent);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-start;
  text-align: left;
  color: white;
  pointer-events: none;
}

.box h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 10px rgba(0,0,0,0.8);
  letter-spacing: -0.02em;
}

.box p {
  font-size: 0.85rem;
  line-height: 1.4;
  opacity: 0.9;
  text-shadow: 0 1px 4px rgba(0,0,0,0.8);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.box:after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  height: 100%;
  width: 100%;
  background: inherit;
  transform: translate(-50%, -50%) rotate(180deg) translate(0, -100%) translate(0, -0.5vmin);
  opacity: 0.75;
  border-radius: 16px;
}

.box:before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  height: 100%;
  width: 100%;
  background: linear-gradient(var(--bg) 50%, transparent);
  transform: translate(-50%, -50%) rotate(180deg) translate(0, -100%) translate(0, -0.5vmin) scale(1.01);
  z-index: 2;
  border-radius: 16px;
}

@supports (-webkit-box-reflect: below) {
  .box {
    -webkit-box-reflect: below 0.5vmin linear-gradient(transparent 0, transparent 50%, white 100%);
  }
  .box:after,
  .box:before {
    display: none;
  }
}