02상태 표시줄 내비

<main class="stage">
  <nav class="navhud is-demo" aria-label="SENTRY">
    <span class="navhud__brand">SENTRY</span>
    <ul class="navhud__track">
      <li class="navhud__item">홈</li>
      <li class="navhud__item">기능</li>
      <li class="navhud__item">요금</li>
      <li class="navhud__item">문의</li>
      <span class="navhud__indicator" aria-hidden="true"></span>
    </ul>
    <span class="navhud__status"><span class="navhud__dot" aria-hidden="true"></span>LIVE</span>
  </nav>
</main>

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

$duration: $dur-loop;       // 밑줄 인디케이터가 탭 4곳을 도는 한 주기
$easing: $ease-spring;      // 인디케이터가 미끄러지는 곡선
$color: $stage-yellow;      // 호박색 터미널 강조색

@include stage($stage-yellow);

.navhud {
  position: relative;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: $sp-3;
  width: clamp(260px, 84vw, 420px);
  padding: $sp-2 $sp-3;
  border-radius: $r-control;
  background: $subject-ink;
  box-shadow: 0 0 0 1px rgba($color, .4), 0 0 24px rgba($color, .16);
}

.navhud__brand {
  flex: none;
  color: $subject-cream;
  font-weight: 800;
  font-size: clamp(12px, 3vw, 13px);
  line-height: 1;
  font-family: inherit;
  letter-spacing: .04em;
  white-space: nowrap;
}

.navhud__track {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
}

.navhud__item {
  padding: $sp-1 0;
  color: rgba($subject-cream, .55);
  font-weight: 600;
  font-size: clamp(10px, 2.6vw, 11px);
  line-height: 1;
  font-family: inherit;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.navhud__indicator {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 25%;
  height: 2px;
  background: $color;
  animation: navScan $duration $easing infinite;
}
@keyframes navScan {
  0%, 20%  { transform: translateX(0); }
  25%, 45% { transform: translateX(100%); }
  50%, 70% { transform: translateX(200%); }
  75%, 95% { transform: translateX(300%); }
  100%     { transform: translateX(0); }
}

.navhud__status {
  flex: none;
  display: flex;
  align-items: center;
  gap: $sp-1;
  color: $color;
  font-family: "Courier New", monospace;
  font-weight: 700;
  font-size: clamp(9px, 2.2vw, 10px);
  line-height: 1;
  letter-spacing: .08em;
  white-space: nowrap;
}
.navhud__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: $color;
  animation: blink $dur-loop steps(1) infinite;
}
@keyframes blink {
  0%, 49%   { opacity: 1; }
  50%, 100% { opacity: .2; }
}

@media (prefers-reduced-motion: reduce) {
  .navhud__indicator, .navhud__dot {
    animation: none !important;
  }
  .navhud__indicator { transform: translateX(0); }
  .navhud__dot { opacity: 1; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ffd23f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.navhud {
  position: relative;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: 12px;
  width: clamp(260px, 84vw, 420px);
  padding: 8px 12px;
  border-radius: 12px;
  background: #17141a;
  box-shadow: 0 0 0 1px rgba(255, 210, 63, 0.4), 0 0 24px rgba(255, 210, 63, 0.16);
}

.navhud__brand {
  flex: none;
  color: #fff7e6;
  font-weight: 800;
  font-size: clamp(12px, 3vw, 13px);
  line-height: 1;
  font-family: inherit;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.navhud__track {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
}

.navhud__item {
  padding: 4px 0;
  color: rgba(255, 247, 230, 0.55);
  font-weight: 600;
  font-size: clamp(10px, 2.6vw, 11px);
  line-height: 1;
  font-family: inherit;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.navhud__indicator {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 25%;
  height: 2px;
  background: #ffd23f;
  animation: navScan 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

@keyframes navScan {
  0%, 20% {
    transform: translateX(0);
  }
  25%, 45% {
    transform: translateX(100%);
  }
  50%, 70% {
    transform: translateX(200%);
  }
  75%, 95% {
    transform: translateX(300%);
  }
  100% {
    transform: translateX(0);
  }
}
.navhud__status {
  flex: none;
  display: flex;
  align-items: center;
  gap: 4px;
  color: #ffd23f;
  font-family: "Courier New", monospace;
  font-weight: 700;
  font-size: clamp(9px, 2.2vw, 10px);
  line-height: 1;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.navhud__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ffd23f;
  animation: blink 2s steps(1) infinite;
}

@keyframes blink {
  0%, 49% {
    opacity: 1;
  }
  50%, 100% {
    opacity: 0.2;
  }
}
@media (prefers-reduced-motion: reduce) {
  .navhud__indicator, .navhud__dot {
    animation: none !important;
  }
  .navhud__indicator {
    transform: translateX(0);
  }
  .navhud__dot {
    opacity: 1;
  }
}

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

export type NavHudProps = {
  brand?: string;
  links?: string[];
  status?: string;
  duration?: number;
  easing?: string;
  color?: string;
};

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

export default function NavHud({
  brand = "SENTRY",
  links = ["홈", "기능", "요금", "문의"],
  status = "LIVE",
  duration = 2000,
  easing = "cubic-bezier(.2,.8,.2,1)",
  color = "#ffd23f",
}: NavHudProps) {
  const vars: Vars = { "--duration": `${duration}ms`, "--easing": easing, "--color": color };

  return (
    <nav className={styles.nav} style={vars} aria-label={brand}>
      <span className={styles.brand}>{brand}</span>
      <ul className={styles.track}>
        {links.map((label) => (
          <li key={label} className={styles.item}>{label}</li>
        ))}
        <span className={styles.indicator} aria-hidden="true" />
      </ul>
      <span className={styles.status}>
        <span className={styles.dot} aria-hidden="true" />
        {status}
      </span>
    </nav>
  );
}