07Terminal prompt style

<main class="stage">
  <div class="term">
    <div class="term__bar"><span class="term__dot"></span><span class="term__dot"></span><span class="term__dot"></span></div>
    <p class="term__line">$ <span class="term__cmd">npm run build</span></p>
    <p class="term__resp">Build complete</p>
  </div>
</main>

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

$duration: $dur-loop;                      // 명령어 → 응답 두 단계를 담는 전체 루프
$easing: steps(13, end);                   // 명령어 글자 수만큼 뚝뚝 끊어 찍힌다
$color: $subject-blue;                     // 커서·응답 색

@include stage($stage-orange);

.term {
  box-sizing: border-box;                    // width 와 padding 을 같이 쓰는데 border-box 가 없으면 padding 이 width 위에 더해져 320px 에서 넘친다 (실측 2026-09-10: 314px)
  width: min(300px, 92vw);
  border-radius: $r-card;
  background: $stage-ink;
  box-shadow: $shadow-raised;
  padding: clamp(10px, 3vw, 16px);
  font: 500 clamp(13px, 3.6vw, 16px)/1.6 "Space Mono", ui-monospace, monospace;
  color: $subject-cream;

  &__bar { display: flex; gap: 6px; margin: 0 0 clamp(6px, 2vw, 10px); }
  &__dot { width: 8px; height: 8px; border-radius: $r-pill; background: rgba($subject-cream, .35); }
  &__line { margin: 0; }
  &__cmd {
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
    vertical-align: bottom;
    width: 0;
    border-right: .1em solid $color;
    animation: cmd-type $duration linear infinite;
  }
  &__resp {
    margin: clamp(6px, 2vw, 10px) 0 0;
    color: $color;
    animation: resp-fade $duration ease-out infinite;
  }
}

@keyframes cmd-type {
  0%, 5%   { width: 0; animation-timing-function: $easing; }
  45%      { width: var(--full, 13ch); }
  85%      { width: var(--full, 13ch); }
  95%, 100% { width: 0; }
}

@keyframes resp-fade {
  0%, 44% { opacity: 0; }
  50%     { opacity: 1; }
  82%     { opacity: 1; }
  90%, 100% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .term__cmd  { animation: none; width: var(--full, 13ch); border-right-color: transparent; }
  .term__resp { animation: none; opacity: 1; }
}

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);
}

.term {
  box-sizing: border-box;
  width: min(300px, 92vw);
  border-radius: 16px;
  background: #17141a;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  padding: clamp(10px, 3vw, 16px);
  font: 500 clamp(13px, 3.6vw, 16px)/1.6 "Space Mono", ui-monospace, monospace;
  color: #fff7e6;
}
.term__bar {
  display: flex;
  gap: 6px;
  margin: 0 0 clamp(6px, 2vw, 10px);
}
.term__dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 247, 230, 0.35);
}
.term__line {
  margin: 0;
}
.term__cmd {
  display: inline-block;
  overflow: hidden;
  white-space: nowrap;
  vertical-align: bottom;
  width: 0;
  border-right: 0.1em solid #2f6df6;
  animation: cmd-type 2s linear infinite;
}
.term__resp {
  margin: clamp(6px, 2vw, 10px) 0 0;
  color: #2f6df6;
  animation: resp-fade 2s ease-out infinite;
}

@keyframes cmd-type {
  0%, 5% {
    width: 0;
    animation-timing-function: steps(13, end);
  }
  45% {
    width: var(--full, 13ch);
  }
  85% {
    width: var(--full, 13ch);
  }
  95%, 100% {
    width: 0;
  }
}
@keyframes resp-fade {
  0%, 44% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  82% {
    opacity: 1;
  }
  90%, 100% {
    opacity: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .term__cmd {
    animation: none;
    width: var(--full, 13ch);
    border-right-color: transparent;
  }
  .term__resp {
    animation: none;
    opacity: 1;
  }
}

(function () {
  var el = document.querySelector('.term__cmd'), cv = document.createElement('canvas').getContext('2d');
  cv.font = getComputedStyle(el).font;
  el.style.setProperty('--full', Math.ceil(cv.measureText(el.textContent).width) + 'px');
})();

import { useEffect, useRef } from "react";
import type { CSSProperties } from "react";
import styles from "./TerminalPrompt.module.scss";

export type TerminalPromptProps = {
  command: string;
  response: string;
  /** 명령어→응답 두 단계를 담는 전체 루프 (기본 2000ms) */
  duration?: number;
  color?: string;
};

export default function TerminalPrompt({ command, response, duration = 2000, color = "#2f6df6" }: TerminalPromptProps) {
  const ref = useRef<HTMLSpanElement | null>(null);
  useEffect(() => {
    const el = ref.current;
    const cv = el && document.createElement("canvas").getContext("2d");
    if (!el || !cv) return;
    cv.font = getComputedStyle(el).font;
    el.style.setProperty("--full", Math.ceil(cv.measureText(command).width) + "px");
  }, [command]);
  const vars = { "--duration": `${duration}ms`, "--color": color, "--easing": `steps(${command.length}, end)` } as CSSProperties;
  return (
    <div className={styles.term} style={vars}>
      <div className={styles.bar}><span className={styles.dot} /><span className={styles.dot} /><span className={styles.dot} /></div>
      <p className={styles.line}>$ <span ref={ref} className={styles.cmd}>{command}</span></p>
      <p className={styles.resp}>{response}</p>
    </div>
  );
}