07Enterprise CTA — a section that turns typed usage into a live estimate

<main class="stage">
<section class="panel">
  <p class="hint">It recalculates the estimated fee from the usage slider value, and switches to a sales inquiry once it crosses the threshold.</p>
  <div class="track" id="track">
    <div class="fill" id="fill"></div>
    <div class="knob" id="knob" role="slider" aria-label="Monthly usage" aria-valuemin="0" aria-valuemax="1500" aria-valuenow="50"></div>
  </div>
  <p class="usageLine"><span id="usageNum">50</span><span class="usageUnit"> req / mo</span></p>
  <p class="estimate" id="estimate">Estimated fee ₩23,000</p>
</section>
</main>

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

$duration: $dur-enter;
$easing: $ease-spring;
$color: $subject-cream;

@include stage($stage-orange);

.panel {
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: $sp-2;
}

.hint {
  margin: 0;
  padding: 0 $sp-2;
  text-align: center;
  font-weight: 400;
  font-size: 11px;
  line-height: 1.4;
  color: rgba($subject-ink, .72);
}

.track {
  position: relative;
  width: 100%;
  height: 6px;
  border-radius: $r-pill;
  background: rgba($subject-ink, .18);
}

.fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  border-radius: $r-pill;
  background: $subject-ink;
  width: 0%;
  transition: width $duration $easing;
}

.knob {
  position: absolute;
  top: 50%;
  left: 0;
  width: 16px;
  height: 16px;
  margin-top: -8px;
  border-radius: $r-pill;
  background: $color;
  box-shadow: $shadow-press;
  transition: left $duration $easing;
}

.usageLine {
  margin: 0;
  font-weight: 700;
  font-size: 16px;
  color: $subject-ink;
}

.usageUnit {
  font-weight: 400;
  font-size: 11px;
  color: rgba($subject-ink, .70);
}

.estimate {
  margin: 0;
  padding: $sp-1 $sp-3;
  border-radius: $r-pill;
  background: $subject-ink;
  color: $subject-cream;
  font-weight: 700;
  font-size: 12px;
  transition: background $duration $easing;
}

.estimate.is-contact {
  background: $subject-orange-deep;
}

@media (max-width: 340px) {
  .panel { max-width: 280px; gap: $sp-1; }
  .hint { font-size: 9px; }
  .usageLine { font-size: 13px; }
  .estimate { font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  .fill,
  .knob,
  .estimate {
    transition: none;
  }
}

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);
}

.panel {
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.hint {
  margin: 0;
  padding: 0 8px;
  text-align: center;
  font-weight: 400;
  font-size: 11px;
  line-height: 1.4;
  color: rgba(23, 20, 26, 0.72);
}

.track {
  position: relative;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: rgba(23, 20, 26, 0.18);
}

.fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  border-radius: 999px;
  background: #17141a;
  width: 0%;
  transition: width 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.knob {
  position: absolute;
  top: 50%;
  left: 0;
  width: 16px;
  height: 16px;
  margin-top: -8px;
  border-radius: 999px;
  background: #fff7e6;
  box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
  transition: left 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.usageLine {
  margin: 0;
  font-weight: 700;
  font-size: 16px;
  color: #17141a;
}

.usageUnit {
  font-weight: 400;
  font-size: 11px;
  color: rgba(23, 20, 26, 0.7);
}

.estimate {
  margin: 0;
  padding: 4px 12px;
  border-radius: 999px;
  background: #17141a;
  color: #fff7e6;
  font-weight: 700;
  font-size: 12px;
  transition: background 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.estimate.is-contact {
  background: #c93000;
}

@media (max-width: 340px) {
  .panel {
    max-width: 280px;
    gap: 4px;
  }
  .hint {
    font-size: 9px;
  }
  .usageLine {
    font-size: 13px;
  }
  .estimate {
    font-size: 11px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .fill,
  .knob,
  .estimate {
    transition: none;
  }
}

// 엔터프라이즈 CTA(07) — 사용량 슬라이더 값(usage)에 건당 단가(RATE)를 곱해 기본요금(BASE)에 더한
// 예상 요금을 매번 새로 구한다. 사용량이 THRESHOLD 를 넘으면 요금 대신 영업 문의 문구로 바꾼다(계산 한 겹).
// 슬라이더 손잡이 위치는 트랙 실제 폭을 재 px 로 계산해 left 에 대입한다(translateX(-50%) 미사용).
(function () {
  var track = document.getElementById('track');
  var fill = document.getElementById('fill');
  var knob = document.getElementById('knob');
  var usageNum = document.getElementById('usageNum');
  var estimate = document.getElementById('estimate');
  if (!track || !fill || !knob || !usageNum || !estimate) return;
  var reduce = window.matchMedia('(prefers-reduced-motion: reduce)').matches;

  var MAX_USAGE = 1500;
  var BASE = 19000;
  var RATE = 18;
  var THRESHOLD = 1000;
  var STEPS = [50, 300, 800, 1200];

  function apply(usage) {
    var pct = usage / MAX_USAGE;
    var trackWidth = track.clientWidth;
    var knobWidth = knob.offsetWidth || 16;
    var knobLeft = pct * (trackWidth - knobWidth);
    knob.style.left = knobLeft + 'px';
    fill.style.width = (pct * 100) + '%';
    knob.setAttribute('aria-valuenow', String(usage));
    usageNum.textContent = String(usage);

    if (usage > THRESHOLD) {
      estimate.textContent = 'Please contact our sales team';
      estimate.classList.add('is-contact');
    } else {
      var won = BASE + usage * RATE;
      estimate.textContent = 'Estimated fee ' + won.toLocaleString('ko-KR') + 'KRW';
      estimate.classList.remove('is-contact');
    }
  }

  apply(STEPS[0]);

  if (!reduce) {
    var idx = 0;
    setInterval(function () {
      idx = (idx + 1) % STEPS.length;
      apply(STEPS[idx]);
    }, 600);
  }

  window.addEventListener('resize', function () {
    apply(Number(knob.getAttribute('aria-valuenow')) || STEPS[0]);
  });
})();

// PricingEnterpriseCta — vanilla 판(run/339/demo/07-pricing-enterprise-cta/index.html) 의 React 포트.
// 사용량 슬라이더 값(usage)에 건당 단가(RATE)를 곱해 기본요금(BASE)에 더한 예상 요금을 매번 새로
// 구한다. 사용량이 THRESHOLD 를 넘으면 요금 대신 영업 문의 문구로 바꾼다(계산 한 겹). 슬라이더
// 손잡이 위치는 트랙 실제 폭을 재 px 로 계산해 left 에 대입한다(translateX(-50%) 미사용).
import { useEffect, useRef } from "react";
import styles from "./PricingEnterpriseCta.module.scss";

export type PricingEnterpriseCtaProps = {
  duration?: string;
  easing?: string;
  color?: string;
};

const HINT = "사용량 슬라이더 값으로 예상 요금을 다시 계산하고, 기준을 넘으면 영업 문의로 바꿉니다";
const SLIDER_ARIA = "월간 사용량";

const MAX_USAGE = 1500;
const BASE = 19000;
const RATE = 18;
const THRESHOLD = 1000;
const STEPS = [50, 300, 800, 1200];

export default function PricingEnterpriseCta({
  duration = "600ms",
  easing = "cubic-bezier(.2,.8,.2,1)",
  color = "#fff7e6"
}: PricingEnterpriseCtaProps) {
  const trackRef = useRef<HTMLDivElement | null>(null);
  const fillRef = useRef<HTMLDivElement | null>(null);
  const knobRef = useRef<HTMLDivElement | null>(null);
  const usageNumRef = useRef<HTMLSpanElement | null>(null);
  const estimateRef = useRef<HTMLParagraphElement | null>(null);

  useEffect(() => {
    const track = trackRef.current;
    const fill = fillRef.current;
    const knob = knobRef.current;
    const usageNum = usageNumRef.current;
    const estimate = estimateRef.current;
    if (!track || !fill || !knob || !usageNum || !estimate) return;
    const reduce = window.matchMedia("(prefers-reduced-motion: reduce)").matches;

    function apply(usage: number): void {
      const pct = usage / MAX_USAGE;
      const trackWidth = track!.clientWidth;
      const knobWidth = knob!.offsetWidth || 16;
      const knobLeft = pct * (trackWidth - knobWidth);
      knob!.style.left = knobLeft + "px";
      fill!.style.width = pct * 100 + "%";
      knob!.setAttribute("aria-valuenow", String(usage));
      usageNum!.textContent = String(usage);

      if (usage > THRESHOLD) {
        estimate!.textContent = "영업팀에 문의해 주세요";
        estimate!.classList.add(styles.isContact);
      } else {
        const won = BASE + usage * RATE;
        estimate!.textContent = "예상 요금 " + won.toLocaleString("ko-KR") + "원";
        estimate!.classList.remove(styles.isContact);
      }
    }

    apply(STEPS[0]);

    let timer = 0;
    if (!reduce) {
      let idx = 0;
      timer = window.setInterval(() => {
        idx = (idx + 1) % STEPS.length;
        apply(STEPS[idx]);
      }, 600);
    }

    const onResize = (): void => {
      apply(Number(knob!.getAttribute("aria-valuenow")) || STEPS[0]);
    };
    window.addEventListener("resize", onResize);

    return () => {
      if (timer) window.clearInterval(timer);
      window.removeEventListener("resize", onResize);
    };
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, []);

  return (
    <main className={styles.stage}>
      <section className={styles.panel}>
        <p className={styles.hint}>{HINT}</p>
        <div className={styles.track} ref={trackRef}>
          <div className={styles.fill} ref={fillRef} />
          <div
            className={styles.knob}
            ref={knobRef}
            role="slider"
            aria-label={SLIDER_ARIA}
            aria-valuemin={0}
            aria-valuemax={MAX_USAGE}
            aria-valuenow={50}
          />
        </div>
        <p className={styles.usageLine}>
          <span ref={usageNumRef}>50</span>
          <span className={styles.usageUnit}> 건 / 월</span>
        </p>
        <p className={styles.estimate} ref={estimateRef}>
          예상 요금 23,000원
        </p>
      </section>
    </main>
  );
}