gradientslider/styles.css at main · clementgrellier/gradientslider · GitHub

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/* Reset & base */
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
}

:root {
  --bg: #f0f0f0;
  --fg: #0b0b0b;
  --perspective: 1800px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* Stage */
.stage {
  position: relative;
  width: 100vw;
  height: 100vh;
  background: var(--bg);
  color: var(--fg);
  overflow: hidden;
  perspective: var(--perspective);
  overscroll-behavior: none;
  -webkit-user-select: none;
  user-select: none;
}

/* Loader overlay */
.loader {
  position: absolute;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  background: #ffffff;
  transition: opacity 0.2s var(--ease), visibility 0.2s linear;
}
.loader--hide {
  opacity: 0;
  visibility: hidden;
}
.loader__content {
  display: grid;
  gap: 12px;
  justify-items: center;
  min-width: 220px;
}
.loader__ring {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 3px solid #ddd;
  border-top-color: #333;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Background canvas (moving gradient) */
#bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  display: block;
  filter: blur(24px) saturate(1.05);
  pointer-events: none;
}

/* Only block native scrolling/gestures in carousel mode */
.stage.carousel-mode {
  touch-action: none;
  cursor: grab;
}
.stage.carousel-mode.dragging {
  cursor: grabbing;
}

/* Cards container */
.cards {
  position: absolute;
  inset: 0;
  z-index: 10;
  transform-style: preserve-3d;
}

/* Card */
.card {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(26vw, 360px);
  aspect-ratio: 4/5;
  isolation: isolate;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  will-change: transform, filter;
  transform-origin: 90% center;
  contain: layout paint; /* reduce layout/paint scope for perf */
}

.card__img {
  border-radius: 15px;
  opacity: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: translateZ(0);
  pointer-events: none;
  -webkit-user-drag: none;
  user-select: none;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .card {
    transition: none !important;
    animation: none !important;
  }
}