07@property 퍼센트 링

<main class="stage">
  <div class="ring" role="progressbar" aria-valuemin="0" aria-valuemax="100" aria-label="진행률"></div>
</main>

@use "../../../../site/static/demo-tokens" as *;

$duration: 1.8s;                                  // 0 → 100 → 0 한 사이클
$easing: ease-in-out;
$color: $subject-cream;                           // 채워지는 색

@include stage($stage-orange);

@property --percent {
  syntax: "<number>";
  inherits: false;
  initial-value: 0;
}

.ring {
  --percent: 0;
  position: relative;
  width: clamp(64px, 18vw, 96px);
  height: clamp(64px, 18vw, 96px);
  border-radius: 50%;
  background: conic-gradient($color calc(var(--percent) * 1%), rgba($subject-ink, .18) 0);
  animation: fill $duration $easing infinite;
}
.ring::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: $stage-orange;                      // 안쪽을 뚫어 링으로 보이게
}

@keyframes fill {
  0%   { --percent: 0; }
  50%  { --percent: 100; }
  100% { --percent: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .ring { animation: none; --percent: 62; }
}

html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

@property --percent {
  syntax: "<number>";
  inherits: false;
  initial-value: 0;
}
.ring {
  --percent: 0;
  position: relative;
  width: clamp(64px, 18vw, 96px);
  height: clamp(64px, 18vw, 96px);
  border-radius: 50%;
  background: conic-gradient(#fff7e6 calc(var(--percent) * 1%), rgba(23, 20, 26, 0.18) 0);
  animation: fill 1.8s ease-in-out infinite;
}

.ring::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 50%;
  background: #ff4d1f;
}

@keyframes fill {
  0% {
    --percent: 0;
  }
  50% {
    --percent: 100;
  }
  100% {
    --percent: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ring {
    animation: none;
    --percent: 62;
  }
}

import type { CSSProperties } from "react";
import styles from "./PropertyProgressRing.module.scss";

export type PropertyProgressRingProps = {
  /** 스피너 지름 (기본 80px) */
  size?: number;
  /** 0 → 100 → 0 한 사이클 시간 (기본 1800ms) */
  duration?: number;
  /** 채워지는 색 */
  color?: string;
  label?: string;
};

type Vars = CSSProperties & { "--size"?: string; "--duration"?: string; "--color"?: string };

export default function PropertyProgressRing({
  size = 80,
  duration = 1800,
  color = "#fff7e6",
  label = "Progress",
}: PropertyProgressRingProps) {
  const vars: Vars = {
    "--size": `${size}px`,
    "--duration": `${duration}ms`,
    "--color": color,
  };
  return (
    <div
      className={styles.ring}
      style={vars}
      role="progressbar"
      aria-valuemin={0}
      aria-valuemax={100}
      aria-label={label}
    />
  );
}