05Vertical ticker

<main class="stage">
  <div class="ticker">
    <div class="ticker__track">
      <span class="ticker__row">AAPL <b>189.42</b> ▲1.2%</span>
      <span class="ticker__row">GOOG <b>172.05</b> ▼0.4%</span>
      <span class="ticker__row">MSFT <b>428.90</b> ▲0.8%</span>
      <span class="ticker__row">NVDA <b>121.77</b> ▲2.1%</span>
      <span class="ticker__row" aria-hidden="true">AAPL <b>189.42</b> ▲1.2%</span>
      <span class="ticker__row" aria-hidden="true">GOOG <b>172.05</b> ▼0.4%</span>
      <span class="ticker__row" aria-hidden="true">MSFT <b>428.90</b> ▲0.8%</span>
      <span class="ticker__row" aria-hidden="true">NVDA <b>121.77</b> ▲2.1%</span>
    </div>
  </div>
</main>

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

$duration: $dur-loop;
$easing: linear;
$color: $subject-blue;

@include stage($stage-ink);

.ticker {
  width: min(220px, 76vw);
  height: 108px;
  overflow: hidden;
  border-radius: $r-control;
  background: rgba($subject-cream, .06);
  padding: 0 14px;
}
.ticker__track {
  display: flex;
  flex-direction: column;
  animation: ticker-scroll $duration $easing infinite;
}
.ticker__row {
  flex-shrink: 0;
  height: 27px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600; font-size: clamp(11px, 3.2vw, 13px); line-height: 1; font-family: inherit;
  color: rgba($subject-cream, .78);

  b { color: $subject-blue-light; font-weight: 800; }   // 어두운 면 위 파란 글자 — AA 4.5
}

// 세로 축에도 같은 2벌 복제 공식을 그대로 적용 — translateX 대신 translateY 로 -50%
@keyframes ticker-scroll {
  from { transform: translateY(0); }
  to   { transform: translateY(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .ticker__track { animation: none; transform: translateY(0); }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.ticker {
  width: min(220px, 76vw);
  height: 108px;
  overflow: hidden;
  border-radius: 12px;
  background: rgba(255, 247, 230, 0.06);
  padding: 0 14px;
}

.ticker__track {
  display: flex;
  flex-direction: column;
  animation: ticker-scroll 2s linear infinite;
}

.ticker__row {
  flex-shrink: 0;
  height: 27px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: clamp(11px, 3.2vw, 13px);
  line-height: 1;
  font-family: inherit;
  color: rgba(255, 247, 230, 0.78);
}
.ticker__row b {
  color: #5b8cf8;
  font-weight: 800;
}

@keyframes ticker-scroll {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-50%);
  }
}
@media (prefers-reduced-motion: reduce) {
  .ticker__track {
    animation: none;
    transform: translateY(0);
  }
}

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

export type TickerRow = { symbol: string; price: string; change: string; up: boolean };

export type VerticalTickerProps = {
  rows?: TickerRow[];
  duration?: number;
  easing?: string;
  color?: string;
};

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

const defaultRows: TickerRow[] = [
  { symbol: "AAPL", price: "189.42", change: "▲1.2%", up: true },
  { symbol: "GOOG", price: "172.05", change: "▼0.4%", up: false },
  { symbol: "MSFT", price: "428.90", change: "▲0.8%", up: true },
  { symbol: "NVDA", price: "121.77", change: "▲2.1%", up: true },
];

export default function VerticalTicker({
  rows = defaultRows,
  duration = 12000,
  easing = "linear",
  color = "#2f6df6",
}: VerticalTickerProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };
  const doubled = [...rows, ...rows];

  return (
    <div className={styles.ticker} style={vars}>
      <div className={styles.track}>
        {doubled.map((r, i) => (
          <span key={r.symbol + i} className={styles.row} aria-hidden={i >= rows.length}>
            {r.symbol} <b>{r.price}</b> {r.change}
          </span>
        ))}
      </div>
    </div>
  );
}