02雑誌の目次風ナビ

<main class="stage">
  <nav class="ncol" aria-label="目次">
    <p class="ncol__mark">COLLAGE</p>
    <div class="ncol__bar">
      <span class="ncol__chip" aria-hidden="true"></span>
      <ul class="ncol__tabs">
        <li class="ncol__tab"><span class="ncol__no">01</span><span class="ncol__label">表紙</span></li>
        <li class="ncol__tab"><span class="ncol__no">02</span><span class="ncol__label">特集</span></li>
        <li class="ncol__tab"><span class="ncol__no">03</span><span class="ncol__label">グラビア</span></li>
        <li class="ncol__tab"><span class="ncol__no">04</span><span class="ncol__label">レビュー</span></li>
      </ul>
    </div>
    <p class="ncol__rule" aria-hidden="true"></p>
  </nav>
</main>

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

// 콜라주·맥시멀 팔레트 (01 과 같은 값). 글자는 ink·slate 뿐, 레몬은 면적 전용
$cg-cream: #fbf3e4;
$cg-sheet: #ffffff;
$cg-ink:   #241d2e;
$cg-slate: #57506a;
$cg-coral: #bb7f74;
$cg-sky:   #668cb4;
$cg-lemon: #d1c8a3;

$serif: Georgia, "Nanum Myeongjo", "Times New Roman", serif;

$duration: $dur-loop;    // 칩이 네 칸을 왕복하는 한 주기
$easing: $ease-spring;
$color: $cg-lemon;       // 현재 위치를 표시하는 종이 칩 색

@include stage($cg-cream);

.ncol {
  position: relative;
  width: clamp(236px, 82vw, 316px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: $sp-2;
}
.ncol__mark {
  margin: 0;
  color: $cg-ink;
  font-family: $serif;
  font-weight: 700;
  font-size: clamp(18px, 4.6vw, 24px);
  line-height: 1;
  letter-spacing: .22em;
  transform: rotate(-2deg);
}

.ncol__bar {
  position: relative;
  box-sizing: border-box;
  padding: $sp-2;
  border-radius: $r-xs;
  background: $cg-sheet;
  box-shadow: 0 5px 0 rgba($cg-ink, .16);
}
.ncol__tabs {
  position: relative;
  z-index: 1;
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
}
// BD19 — 이동량이 고정 px 이므로 탭은 반드시 내용 폭이 아니라 고정 폭이어야 한다
.ncol__tab {
  flex: 0 0 var(--tab);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: $sp-1;
  padding: $sp-1 0;
  margin-right: $sp-1;
}
.ncol__tab:last-child { margin-right: 0; }
.ncol__no {
  color: $cg-ink;
  font-family: $serif;
  font-weight: 700;
  font-size: clamp(10px, 2.4vw, 12px);
  line-height: 1;
}
.ncol__label {
  color: $cg-ink;
  font-weight: 700;
  font-size: clamp(11px, 2.6vw, 13px);
  line-height: 1;
}

// 종이 칩 — 탭 뒤에서 한 칸씩 뛴다. 칸 간격(--step) = 탭 폭 + 간격
.ncol__chip {
  position: absolute;
  z-index: 0;
  left: $sp-2;
  top: $sp-2;
  width: var(--tab);
  height: calc(100% - #{$sp-4});
  border-radius: $r-xs;
  background: $cg-lemon;
  animation-name: chipHop;
  animation-duration: $duration;
  animation-timing-function: $easing;
  animation-iteration-count: infinite;
}

.ncol__rule {
  width: 100%;
  height: 3px;
  margin: 0;
  border-radius: $r-xs;
  background: repeating-linear-gradient(90deg, $cg-ink 0 12px, transparent 12px 20px);
  transform: rotate(1deg);
}

.ncol { --tab: 68px; --step: 72px; }

// 데모: 칸마다 잠깐 앉았다가 다음 칸으로 뛴다. 네 칸을 갔다가 같은 길로 돌아오므로
// 끝에서 처음으로 건너뛰는 구간이 없다 — 마지막 프레임과 첫 프레임이 같은 자리다
@keyframes chipHop {
  0%, 10%      { transform: translateX(0) translateY(0) rotate(-3deg); }
  13.3%        { transform: translateX(calc(var(--step) * .5)) translateY(-11px) rotate(5deg); }
  16.6%, 26.6% { transform: translateX(var(--step)) translateY(0) rotate(-3deg); }
  30%          { transform: translateX(calc(var(--step) * 1.5)) translateY(-11px) rotate(5deg); }
  33.3%, 43.3% { transform: translateX(calc(var(--step) * 2)) translateY(0) rotate(-3deg); }
  46.6%        { transform: translateX(calc(var(--step) * 2.5)) translateY(-11px) rotate(5deg); }
  50%, 60%     { transform: translateX(calc(var(--step) * 3)) translateY(0) rotate(-3deg); }
  63.3%        { transform: translateX(calc(var(--step) * 2.5)) translateY(-11px) rotate(-11deg); }
  66.6%, 76.6% { transform: translateX(calc(var(--step) * 2)) translateY(0) rotate(-3deg); }
  80%          { transform: translateX(calc(var(--step) * 1.5)) translateY(-11px) rotate(-11deg); }
  83.3%, 93.3% { transform: translateX(var(--step)) translateY(0) rotate(-3deg); }
  96.6%        { transform: translateX(calc(var(--step) * .5)) translateY(-11px) rotate(-11deg); }
  100%         { transform: translateX(0) translateY(0) rotate(-3deg); }
}

@media (max-width: 360px), (max-height: 230px) {
  .ncol { width: 232px; --tab: 48px; --step: 52px; gap: $sp-2; }
  .ncol__mark { font-size: 15px; letter-spacing: .14em; }
  .ncol__label { font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  .ncol__chip { animation: none !important; transform: rotate(-3deg); }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #fbf3e4;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.ncol {
  position: relative;
  width: clamp(236px, 82vw, 316px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.ncol__mark {
  margin: 0;
  color: #241d2e;
  font-family: Georgia, "Nanum Myeongjo", "Times New Roman", serif;
  font-weight: 700;
  font-size: clamp(18px, 4.6vw, 24px);
  line-height: 1;
  letter-spacing: 0.22em;
  transform: rotate(-2deg);
}

.ncol__bar {
  position: relative;
  box-sizing: border-box;
  padding: 8px;
  border-radius: 4px;
  background: #ffffff;
  box-shadow: 0 5px 0 rgba(36, 29, 46, 0.16);
}

.ncol__tabs {
  position: relative;
  z-index: 1;
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ncol__tab {
  flex: 0 0 var(--tab);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 4px 0;
  margin-right: 4px;
}

.ncol__tab:last-child {
  margin-right: 0;
}

.ncol__no {
  color: #241d2e;
  font-family: Georgia, "Nanum Myeongjo", "Times New Roman", serif;
  font-weight: 700;
  font-size: clamp(10px, 2.4vw, 12px);
  line-height: 1;
}

.ncol__label {
  color: #241d2e;
  font-weight: 700;
  font-size: clamp(11px, 2.6vw, 13px);
  line-height: 1;
}

.ncol__chip {
  position: absolute;
  z-index: 0;
  left: 8px;
  top: 8px;
  width: var(--tab);
  height: calc(100% - 16px);
  border-radius: 4px;
  background: #d1c8a3;
  animation-name: chipHop;
  animation-duration: 2s;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-iteration-count: infinite;
}

.ncol__rule {
  width: 100%;
  height: 3px;
  margin: 0;
  border-radius: 4px;
  background: repeating-linear-gradient(90deg, #241d2e 0 12px, transparent 12px 20px);
  transform: rotate(1deg);
}

.ncol {
  --tab: 68px;
  --step: 72px;
}

@keyframes chipHop {
  0%, 10% {
    transform: translateX(0) translateY(0) rotate(-3deg);
  }
  13.3% {
    transform: translateX(calc(var(--step) * 0.5)) translateY(-11px) rotate(5deg);
  }
  16.6%, 26.6% {
    transform: translateX(var(--step)) translateY(0) rotate(-3deg);
  }
  30% {
    transform: translateX(calc(var(--step) * 1.5)) translateY(-11px) rotate(5deg);
  }
  33.3%, 43.3% {
    transform: translateX(calc(var(--step) * 2)) translateY(0) rotate(-3deg);
  }
  46.6% {
    transform: translateX(calc(var(--step) * 2.5)) translateY(-11px) rotate(5deg);
  }
  50%, 60% {
    transform: translateX(calc(var(--step) * 3)) translateY(0) rotate(-3deg);
  }
  63.3% {
    transform: translateX(calc(var(--step) * 2.5)) translateY(-11px) rotate(-11deg);
  }
  66.6%, 76.6% {
    transform: translateX(calc(var(--step) * 2)) translateY(0) rotate(-3deg);
  }
  80% {
    transform: translateX(calc(var(--step) * 1.5)) translateY(-11px) rotate(-11deg);
  }
  83.3%, 93.3% {
    transform: translateX(var(--step)) translateY(0) rotate(-3deg);
  }
  96.6% {
    transform: translateX(calc(var(--step) * 0.5)) translateY(-11px) rotate(-11deg);
  }
  100% {
    transform: translateX(0) translateY(0) rotate(-3deg);
  }
}
@media (max-width: 360px), (max-height: 230px) {
  .ncol {
    width: 232px;
    --tab: 48px;
    --step: 52px;
    gap: 8px;
  }
  .ncol__mark {
    font-size: 15px;
    letter-spacing: 0.14em;
  }
  .ncol__label {
    font-size: 11px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ncol__chip {
    animation: none !important;
    transform: rotate(-3deg);
  }
}

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

export type NavCollageItem = { no: string; label: string };
export type NavCollageProps = {
  mark?: string;
  items?: NavCollageItem[];
  /** 탭 한 칸의 고정 폭(px). 이동량이 고정 px 이라 탭도 고정 폭이어야 한다 */
  tab?: number;
  /** 탭 사이 간격(px) */
  gap?: number;
  duration?: number;
  easing?: string;
  color?: string;
};

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

const defaultItems: NavCollageItem[] = [
  { no: "01", label: "표지" },
  { no: "02", label: "특집" },
  { no: "03", label: "화보" },
  { no: "04", label: "후기" },
];

export default function NavCollage({
  mark = "COLLAGE",
  items = defaultItems,
  tab = 68,
  gap = 4,
  duration = 2000,
  easing = "cubic-bezier(.2, .8, .2, 1)",
  color = "#ffd93d",
}: NavCollageProps) {
  const vars: Vars = {
    "--duration": `${duration}ms`,
    "--easing": easing,
    "--color": color,
    "--tab": `${tab}px`,
    "--step": `${tab + gap}px`,
  };

  return (
    <nav className={styles.ncol} style={vars} aria-label={mark}>
      <p className={styles.mark}>{mark}</p>
      <div className={styles.bar}>
        <span className={styles.chip} aria-hidden="true" />
        <ul className={styles.tabs}>
          {items.map((x) => (
            <li key={x.no} className={styles.tab}>
              <span className={styles.no}>{x.no}</span>
              <span className={styles.label}>{x.label}</span>
            </li>
          ))}
        </ul>
      </div>
      <p className={styles.rule} aria-hidden="true" />
    </nav>
  );
}