How to create a prismatic glow card プリズマティックグローカードの作り方

.prism-card {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border-radius: 28px;
}

.prism-card::before {
  content: "";
  position: absolute;
  inset: calc(var(--prism-spread, 22px) * -1);
  background: conic-gradient(from 0deg, #ff6b6b, #ffd166, #23f0c7, #4cc9f0, #7b61ff, #ff4d9d, #ff6b6b);
  filter: blur(var(--prism-spread, 22px));
  animation: prism-spin var(--prism-speed, 7s) linear infinite;
}

.prism-card::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: linear-gradient(160deg, rgba(16, 20, 44, 0.94), rgba(8, 12, 28, 0.98));
}

@keyframes prism-spin {
  to { transform: rotate(360deg); }
}

import "./M-013.css";

export default function PrismaticGlowCard({
  title = "Spectrum Sync",
  description = "Animated conic light wraps a glassy card to spotlight hero content.",
  speed = 7,
  spread = 22,
  items = ["Live gradient", "Soft bloom", "Glass depth"],
}) {
  return (
    <article
      className="prismatic-glow-card"
      style={{
        "--prism-speed": `${speed}s`,
        "--prism-spread": `${spread}px`,
      }}
    >
      <span className="prismatic-glow-card__eyebrow">Prismatic Glow</span>
      <h3>{title}</h3>
      <p>{description}</p>
      <div className="prismatic-glow-card__chips">
        {items.map((item) => (
          <span key={item}>{item}</span>
        ))}
      </div>
    </article>
  );
}

:root {
  --prism-speed: 7s;
  --prism-spread: 22px;
}

.prismatic-glow-card {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border-radius: 28px;
  padding: clamp(24px, 5vw, 34px);
  color: #f8fbff;
  background:
    linear-gradient(160deg, rgba(18, 22, 48, 0.94), rgba(6, 10, 24, 0.98)),
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.16), transparent 32%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 20px 60px rgba(5, 8, 24, 0.45);
}

.prismatic-glow-card::before {
  content: "";
  position: absolute;
  inset: calc(var(--prism-spread) * -1);
  border-radius: inherit;
  background: conic-gradient(
    from 0deg,
    #ff6b6b,
    #ffd166,
    #23f0c7,
    #4cc9f0,
    #7b61ff,
    #ff4d9d,
    #ff6b6b
  );
  filter: blur(var(--prism-spread));
  opacity: 0.9;
  animation: prism-spin var(--prism-speed) linear infinite;
  z-index: -2;
}

.prismatic-glow-card::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: calc(28px - 1px);
  background:
    linear-gradient(160deg, rgba(16, 20, 44, 0.94), rgba(8, 12, 28, 0.98)),
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.14), transparent 34%);
  z-index: -1;
}

.prismatic-glow-card__eyebrow {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #eef4ff;
  background: rgba(255, 255, 255, 0.08);
}

.prismatic-glow-card h3 {
  margin: 18px 0 10px;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.05;
}

.prismatic-glow-card p {
  margin: 0;
  max-width: 36ch;
  color: rgba(240, 245, 255, 0.78);
  line-height: 1.6;
}

.prismatic-glow-card__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.prismatic-glow-card__chips span {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(244, 248, 255, 0.92);
  font-size: 13px;
}

@keyframes prism-spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .prismatic-glow-card::before {
    animation: none;
  }
}