页面困難

Comics — Paged Comic Reader (page flip · zoom)

A full-screen immersive comic reader for the fictional series Neon Ronin, with a dark chrome and CSS-drawn pages built from inked panels, halftone texture, speech balloons, and bold Bangers SFX lettering. Big prev/next arrows drive a 3D page-flip transition past a 7 of 24 counter, while a page-jump dropdown and a collapsible thumbnail strip let readers leap anywhere. A fit-width versus fit-height toggle reframes the spread, a zoom slider plus double-click-to-point magnifies the art, and arrow keys turn pages with toast feedback.

在 Lab 開啟

html css vanilla-js

目標: JS HTML

程式碼

:root {
  --ink: #0e0e12;
  --ink-2: #23232b;
  --paper: #fdfcf7;
  --panel: #ffffff;
  --accent: #ff2e4d;
  --accent-2: #ffd23f;
  --accent-blue: #2e6bff;
  --muted: #6b6b78;
  --line: rgba(14, 14, 18, 0.14);
  --line-2: rgba(14, 14, 18, 0.28);
  --halftone: radial-gradient(circle, rgba(14, 14, 18, 0.18) 1px, transparent 1.6px);

  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 18px;

  /* dark reader chrome */
  --chrome: #14141a;
  --chrome-2: #1d1d26;
  --chrome-line: rgba(255, 255, 255, 0.1);
  --chrome-text: #eceaf2;
  --chrome-muted: #9a9aac;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
}

body {
  font-family: "Inter", system-ui, sans-serif;
  line-height: 1.5;
  background:
    var(--halftone),
    radial-gradient(120% 80% at 50% -10%, #20202b, #0a0a0f 70%);
  background-size: 6px 6px, cover;
  color: var(--chrome-text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow: hidden;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* ---------- Layout shell ---------- */
.reader {
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  height: 100dvh;
}

/* ---------- Bars ---------- */
.bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: linear-gradient(180deg, var(--chrome-2), var(--chrome));
  border-bottom: 1px solid var(--chrome-line);
  z-index: 5;
}

.bar--bottom {
  border-bottom: none;
  border-top: 1px solid var(--chrome-line);
  justify-content: space-between;
}

.bar--top {
  justify-content: space-between;
}

/* series identity */
.series {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.series__sfx {
  font-family: "Bangers", system-ui, sans-serif;
  font-size: 1.5rem;
  letter-spacing: 1px;
  color: var(--ink);
  background: var(--accent-2);
  border: 2.5px solid var(--ink);
  border-radius: var(--r-sm);
  padding: 2px 10px 0;
  transform: rotate(-4deg);
  box-shadow: 3px 3px 0 var(--accent);
  white-space: nowrap;
}

.series__meta {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  min-width: 0;
}

.series__title {
  font-family: "Bangers", system-ui, sans-serif;
  font-size: 1.4rem;
  letter-spacing: 1.5px;
  color: var(--chrome-text);
}

.series__issue {
  font-size: 0.78rem;
  color: var(--chrome-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* top controls */
.topctrl {
  display: flex;
  align-items: center;
  gap: 12px;
}

.jump {
  display: flex;
  align-items: center;
  gap: 6px;
}

.jump__label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--chrome-muted);
}

.jump__select {
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--chrome-text);
  background: var(--chrome-2);
  border: 1px solid var(--chrome-line);
  border-radius: var(--r-sm);
  padding: 6px 8px;
}

.jump__select:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 1px;
}

/* segmented control */
.seg {
  display: inline-flex;
  border: 1px solid var(--chrome-line);
  border-radius: var(--r-sm);
  overflow: hidden;
  background: var(--chrome-2);
}

.seg__btn {
  border: 0;
  background: transparent;
  color: var(--chrome-muted);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 7px 12px;
  transition: background 0.15s, color 0.15s;
}

.seg__btn + .seg__btn {
  border-left: 1px solid var(--chrome-line);
}

.seg__btn:hover {
  color: var(--chrome-text);
}

.seg__btn.is-active {
  background: var(--accent);
  color: #fff;
}

.seg__btn:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: -2px;
}

/* ---------- Stage ---------- */
.stage {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  overflow: auto;
  padding: 24px;
}

.stage__inner {
  perspective: 2400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page-flip {
  transform-style: preserve-3d;
  transition: transform 0.45s cubic-bezier(0.3, 0.9, 0.4, 1);
  will-change: transform;
}

.page-flip.is-flip-next {
  transform: rotateY(-22deg) translateX(-2%);
  opacity: 0.25;
}

.page-flip.is-flip-prev {
  transform: rotateY(22deg) translateX(2%);
  opacity: 0.25;
}

.page-mount {
  cursor: zoom-in;
}

.page-mount.is-zoomed {
  cursor: zoom-out;
}

/* fit modes — controlled by data attr on stage */
.stage[data-fit="width"] .comic {
  width: min(620px, 92vw);
}

.stage[data-fit="height"] .comic {
  height: calc(100dvh - 220px);
  width: auto;
  aspect-ratio: 62 / 88;
}

/* ---------- The CSS-drawn comic page ---------- */
.comic {
  background: var(--paper);
  background-image: var(--halftone);
  background-size: 6px 6px;
  border: 3px solid var(--ink);
  border-radius: 4px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(0, 0, 0, 0.4);
  aspect-ratio: 62 / 88;
  padding: 14px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 12px;
  color: var(--ink);
  transform-origin: center center;
  transition: transform 0.2s ease;
}

.comic__bann {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  border-bottom: 3px solid var(--ink);
  padding-bottom: 6px;
}

.comic__title {
  font-family: "Bangers", system-ui, sans-serif;
  font-size: clamp(1.1rem, 4.2vw, 1.7rem);
  letter-spacing: 1px;
  line-height: 1;
  margin: 0;
}

.comic__pageno {
  font-family: "Bangers", system-ui, sans-serif;
  font-size: 1rem;
  letter-spacing: 1px;
  color: var(--accent);
}

/* panel grid varies per page via .comic--gridN */
.comic__panels {
  display: grid;
  gap: 10px;
  min-height: 0;
}

.comic--a .comic__panels {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1.2fr 1fr;
}
.comic--a .panel:nth-child(1) {
  grid-column: 1 / -1;
}

.comic--b .comic__panels {
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr;
}
.comic--b .panel:nth-child(3) {
  grid-row: 1 / -1;
  grid-column: 3;
}

.comic--c .comic__panels {
  grid-template-rows: 1fr 1.3fr 1fr;
}

.comic--d .comic__panels {
  grid-template-columns: 1.4fr 1fr;
  grid-template-rows: 1fr 1fr 1fr;
}
.comic--d .panel:nth-child(1) {
  grid-row: 1 / 3;
}

/* a panel */
.panel {
  position: relative;
  border: 2.5px solid var(--ink);
  border-radius: 3px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 8px;
  background: #fff;
}

/* scene backgrounds for variety */
.panel--sky {
  background:
    radial-gradient(60% 80% at 70% 20%, #fff 0%, transparent 40%),
    linear-gradient(160deg, #ffe3a8, #ff9a6b 60%, #ff4f73);
}
.panel--night {
  background:
    radial-gradient(40% 50% at 25% 30%, var(--accent-2), transparent 60%),
    linear-gradient(150deg, #1d2a6b, #0c1030);
  color: #fff;
}
.panel--storm {
  background:
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.18) 0 8px, transparent 8px 18px),
    linear-gradient(150deg, #3a3f57, #15171f);
  color: #fff;
}
.panel--neon {
  background:
    radial-gradient(50% 60% at 50% 50%, var(--accent), transparent 65%),
    linear-gradient(150deg, #2e6bff, #0a0e2c);
  color: #fff;
}
.panel--dawn {
  background:
    radial-gradient(50% 60% at 50% 90%, #fff, transparent 60%),
    linear-gradient(0deg, #ffd23f, #ff7a59 70%, #b13b6e);
}
.panel--ink {
  background:
    var(--halftone),
    linear-gradient(150deg, #2a2a34, #0e0e12);
  background-size: 7px 7px, cover;
  color: #fff;
}

/* a tiny CSS "character" silhouette so panels feel drawn */
.panel__fig {
  position: absolute;
  bottom: 0;
  width: 34%;
  height: 64%;
  background: var(--ink);
  clip-path: polygon(40% 0, 60% 0, 66% 22%, 58% 30%, 70% 60%, 60% 100%, 40% 100%, 30% 60%, 42% 30%, 34% 22%);
  opacity: 0.9;
}
.panel__fig--r {
  right: 8%;
  transform: scaleX(-1);
}
.panel__fig--l {
  left: 8%;
}

.panel__horizon {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 26%;
  height: 2px;
  background: rgba(0, 0, 0, 0.45);
}

/* SFX lettering inside panels */
.sfx {
  position: absolute;
  font-family: "Bangers", system-ui, sans-serif;
  letter-spacing: 1px;
  line-height: 0.9;
  color: var(--accent-2);
  -webkit-text-stroke: 2px var(--ink);
  text-shadow: 3px 3px 0 var(--accent);
  font-size: clamp(1.4rem, 6vw, 2.4rem);
  transform: rotate(-8deg);
  pointer-events: none;
}
.sfx--tr {
  top: 8%;
  right: 6%;
}
.sfx--bl {
  bottom: 12%;
  left: 6%;
  transform: rotate(6deg);
}

/* speech balloons */
.balloon {
  position: relative;
  z-index: 2;
  max-width: 78%;
  background: #fff;
  color: var(--ink);
  border: 2px solid var(--ink);
  border-radius: 14px;
  padding: 6px 9px;
  font-size: clamp(0.62rem, 2.3vw, 0.82rem);
  font-weight: 600;
  line-height: 1.25;
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.25);
}
.balloon::after {
  content: "";
  position: absolute;
  bottom: -9px;
  left: 18px;
  width: 14px;
  height: 14px;
  background: #fff;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(45deg);
}
.balloon--right {
  margin-left: auto;
}
.balloon--right::after {
  left: auto;
  right: 18px;
}
.balloon--think {
  border-radius: 40px;
}
.balloon--think::after {
  border-radius: 50%;
  border: 2px solid var(--ink);
  width: 8px;
  height: 8px;
  bottom: -6px;
}
.balloon--shout {
  border-radius: 4px;
  clip-path: polygon(
    0 12%, 8% 0, 22% 14%, 40% 0, 56% 14%, 74% 0, 90% 14%, 100% 6%,
    96% 30%, 100% 56%, 92% 72%, 100% 92%, 80% 86%, 64% 100%, 46% 86%,
    30% 100%, 14% 86%, 0 94%, 6% 64%, 0 40%
  );
  background: var(--accent-2);
  padding: 14px 16px;
  font-family: "Bangers", system-ui, sans-serif;
  letter-spacing: 0.5px;
}
.balloon--shout::after {
  display: none;
}

.caption {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 2;
  background: var(--accent-2);
  color: var(--ink);
  border: 2px solid var(--ink);
  font-size: clamp(0.55rem, 2vw, 0.72rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 7px;
}

/* footer of the comic page */
.comic__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 2px solid var(--ink);
  padding-top: 6px;
  font-size: 0.66rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ---------- nav arrows ---------- */
.nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 6;
  width: 48px;
  height: 72px;
  display: grid;
  place-items: center;
  font-size: 2.2rem;
  line-height: 1;
  color: var(--ink);
  background: var(--accent-2);
  border: 2.5px solid var(--ink);
  border-radius: var(--r-md);
  box-shadow: 3px 3px 0 var(--accent);
  transition: transform 0.12s, box-shadow 0.12s, opacity 0.15s;
}
.nav--prev {
  left: 14px;
}
.nav--next {
  right: 14px;
}
.nav:hover {
  transform: translateY(-50%) translateY(-2px);
}
.nav:active {
  transform: translateY(-50%) translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--accent);
}
.nav:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  box-shadow: none;
}
.nav:focus-visible {
  outline: 3px solid var(--accent-blue);
  outline-offset: 2px;
}

/* ---------- counter + zoom ---------- */
.counter {
  font-family: "Bangers", system-ui, sans-serif;
  font-size: 1.4rem;
  letter-spacing: 1px;
  display: flex;
  align-items: baseline;
  gap: 6px;
  min-width: 76px;
}
.counter__cur {
  color: var(--accent-2);
}
.counter__sep,
.counter__tot {
  color: var(--chrome-muted);
}

.zoom {
  display: flex;
  align-items: center;
  gap: 8px;
}
.zoom__btn {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--chrome-text);
  background: var(--chrome-2);
  border: 1px solid var(--chrome-line);
  border-radius: var(--r-sm);
  transition: background 0.15s, border-color 0.15s;
}
.zoom__btn:hover {
  background: #2a2a36;
  border-color: var(--accent);
}
.zoom__btn:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 1px;
}
.zoom__btn--reset {
  width: auto;
  padding: 0 10px;
  font-size: 0.78rem;
  font-weight: 600;
}
.zoom__slider {
  width: 130px;
  accent-color: var(--accent);
}
.zoom__val {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--chrome-muted);
  min-width: 42px;
  text-align: right;
}

.thumbtoggle {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: var(--accent-2);
  border: 2px solid var(--ink);
  border-radius: var(--r-sm);
  padding: 7px 14px;
  box-shadow: 2px 2px 0 var(--accent);
  transition: transform 0.12s, box-shadow 0.12s;
}
.thumbtoggle:hover {
  transform: translateY(-1px);
}
.thumbtoggle[aria-expanded="true"] {
  background: var(--accent);
  color: #fff;
  box-shadow: 2px 2px 0 var(--ink);
}
.thumbtoggle:focus-visible {
  outline: 3px solid var(--accent-blue);
  outline-offset: 2px;
}

/* ---------- thumbnails ---------- */
.thumbs {
  background: var(--chrome);
  border-top: 1px solid var(--chrome-line);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 16px;
}
.thumbs[data-open="true"] {
  max-height: 160px;
  padding: 12px 16px;
}
.thumbs__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
}
.thumb {
  flex: 0 0 auto;
}
.thumb__btn {
  position: relative;
  width: 64px;
  height: 90px;
  padding: 0;
  background: var(--paper);
  background-image: var(--halftone);
  background-size: 5px 5px;
  border: 2px solid var(--ink-2);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.12s, border-color 0.12s, box-shadow 0.12s;
}
.thumb__btn:hover {
  transform: translateY(-3px);
}
.thumb__btn.is-active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent);
}
.thumb__btn:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}
.thumb__mini {
  position: absolute;
  inset: 5px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 3px;
}
.thumb__cell {
  border: 1px solid rgba(14, 14, 18, 0.6);
  border-radius: 1px;
}
.thumb__no {
  position: absolute;
  bottom: 2px;
  right: 3px;
  font-size: 0.6rem;
  font-weight: 800;
  color: var(--ink);
  background: var(--accent-2);
  border: 1px solid var(--ink);
  padding: 0 3px;
  border-radius: 2px;
}

/* ---------- toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 96px;
  transform: translate(-50%, 12px);
  background: var(--ink);
  color: var(--paper);
  border: 2px solid var(--accent-2);
  border-radius: var(--r-md);
  padding: 9px 16px;
  font-size: 0.84rem;
  font-weight: 600;
  box-shadow: 4px 4px 0 var(--accent);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 50;
  max-width: 88vw;
}
.toast.is-show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- responsive ---------- */
@media (max-width: 520px) {
  .bar {
    flex-wrap: wrap;
    gap: 10px;
    padding: 8px 10px;
  }
  .series__sfx {
    font-size: 1.2rem;
  }
  .series__title {
    font-size: 1.1rem;
  }
  .topctrl {
    width: 100%;
    justify-content: space-between;
  }
  .jump__label {
    display: none;
  }
  .stage {
    padding: 12px 8px;
  }
  .stage[data-fit="width"] .comic {
    width: 94vw;
  }
  .stage[data-fit="height"] .comic {
    height: calc(100dvh - 260px);
  }
  .nav {
    width: 38px;
    height: 58px;
    font-size: 1.7rem;
  }
  .nav--prev {
    left: 6px;
  }
  .nav--next {
    right: 6px;
  }
  .bar--bottom {
    gap: 8px;
  }
  .counter {
    font-size: 1.1rem;
    min-width: 56px;
  }
  .zoom__slider {
    width: 84px;
  }
  .zoom__btn--reset {
    display: none;
  }
  .thumbtoggle {
    padding: 6px 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-flip,
  .nav,
  .toast,
  .comic {
    transition: none !important;
  }
}

/* Neon Ronin #07 — Paged Comic Reader
   Vanilla JS: page state, 3D flip transition, zoom transform, keyboard nav. */
(function () {
  "use strict";

  /* ---------- page data (fictional) ---------- */
  const SCENES = ["sky", "night", "storm", "neon", "dawn", "ink"];

  const PAGES = [
    { layout: "a", title: "Static Bloom", sfx: "KRA-KOOM!", sfxPos: "tr",
      cap: "Sector 7 — 03:14",
      lines: ["The grid's gone dark again, Ronin.", "Then we move where the light can't follow."] },
    { layout: "b", title: "Cold Open", sfx: "VWOOSH", sfxPos: "bl",
      cap: "Above the Drift",
      lines: ["Iron Vanguard, do you copy?", "Always have. Always will.", "Hold the line."] },
    { layout: "c", title: "Wire & Rain", sfx: "TSSST", sfxPos: "tr",
      cap: "Rooftops, eastside",
      lines: ["Rain's the only thing the cameras can't bribe.", "Then let it pour."] },
    { layout: "d", title: "The Ask", sfx: "THWIP!", sfxPos: "bl",
      cap: "Lotus Arcade",
      lines: ["One blade. One night.", "You said that last year.", "I lied last year."] },
    { layout: "a", title: "Crossfire", sfx: "BLAM!", sfxPos: "tr",
      cap: "Loading dock",
      lines: ["Down!", "Cover me — counting to three.", "Make it two."] },
    { layout: "b", title: "Neon Ghosts", sfx: "HMMMM", sfxPos: "bl",
      cap: "The Undermarket",
      lines: ["They sell faces here.", "Then we'll buy a new one.", "Cash only."] },
    { layout: "c", title: "Static Bloom", sfx: "KRRRK", sfxPos: "tr",
      cap: "Sector 7 — 03:42",
      lines: ["You came back for me.", "I never left.", "Liar."] },
    { layout: "d", title: "Edge of Drift", sfx: "WHUMP", sfxPos: "bl",
      cap: "Skybridge 9",
      lines: ["Jump. I've got you.", "You always say that.", "And I always do."] },
  ];
  // pad to a believable 24-page issue by cycling content
  const TOTAL = 24;
  function pageData(i) {
    const base = PAGES[i % PAGES.length];
    return Object.assign({}, base, {
      scene: SCENES[i % SCENES.length],
      scene2: SCENES[(i + 3) % SCENES.length],
    });
  }

  /* ---------- DOM ---------- */
  const $ = (s) => document.querySelector(s);
  const stage = $("#stage");
  const pageFlip = $("#pageFlip");
  const pageMount = $("#pageMount");
  const prevBtn = $("#prevBtn");
  const nextBtn = $("#nextBtn");
  const counterCur = $("#counterCur");
  const counterTot = $("#counterTot");
  const pageSelect = $("#pageSelect");
  const fitWidth = $("#fitWidth");
  const fitHeight = $("#fitHeight");
  const zoomSlider = $("#zoomSlider");
  const zoomVal = $("#zoomVal");
  const zoomIn = $("#zoomIn");
  const zoomOut = $("#zoomOut");
  const zoomReset = $("#zoomReset");
  const thumbToggle = $("#thumbToggle");
  const thumbStrip = $("#thumbStrip");
  const thumbsList = $("#thumbsList");
  const toastEl = $("#toast");

  /* ---------- state ---------- */
  let current = 0; // 0-based
  let zoom = 100; // percent
  let zoomOrigin = "center center";
  let busy = false;

  /* ---------- toast ---------- */
  let toastTimer;
  function toast(msg) {
    toastEl.textContent = msg;
    toastEl.classList.add("is-show");
    clearTimeout(toastTimer);
    toastTimer = setTimeout(() => toastEl.classList.remove("is-show"), 1800);
  }

  /* ---------- render a comic page ---------- */
  function panelCount(layout) {
    return { a: 3, b: 4, c: 3, d: 4 }[layout] || 3;
  }

  function buildBalloon(text, idx, layout) {
    const b = document.createElement("p");
    const variant = idx === 0 ? "" : idx % 2 === 0 ? " balloon--right" : "";
    const shout = /[!?]{1}$/.test(text) && text === text.toUpperCase() && text.length < 14;
    b.className = "balloon" + variant + (shout ? " balloon--shout" : "");
    b.textContent = text;
    return b;
  }

  function buildPage(i) {
    const d = pageData(i);
    const comic = document.createElement("article");
    comic.className = "comic comic--" + d.layout;
    comic.setAttribute("role", "img");
    comic.setAttribute(
      "aria-label",
      `Neon Ronin issue 7, page ${i + 1} of ${TOTAL}: ${d.title}`
    );

    // banner
    const bann = document.createElement("header");
    bann.className = "comic__bann";
    const h = document.createElement("h2");
    h.className = "comic__title";
    h.textContent = d.title;
    const pn = document.createElement("span");
    pn.className = "comic__pageno";
    pn.textContent = "PG " + (i + 1);
    bann.append(h, pn);

    // panels
    const panels = document.createElement("div");
    panels.className = "comic__panels";
    const n = panelCount(d.layout);
    for (let p = 0; p < n; p++) {
      const panel = document.createElement("div");
      const scene = p % 2 === 0 ? d.scene : d.scene2;
      panel.className = "panel panel--" + scene;

      // horizon + figures for set dressing
      const horizon = document.createElement("span");
      horizon.className = "panel__horizon";
      panel.appendChild(horizon);

      const figL = document.createElement("span");
      figL.className = "panel__fig panel__fig--l";
      panel.appendChild(figL);
      if (p === 0) {
        const figR = document.createElement("span");
        figR.className = "panel__fig panel__fig--r";
        panel.appendChild(figR);
      }

      // caption on first panel
      if (p === 0) {
        const cap = document.createElement("span");
        cap.className = "caption";
        cap.textContent = d.cap;
        panel.appendChild(cap);
      }

      // SFX on a panel
      if (p === 1) {
        const sfx = document.createElement("span");
        sfx.className = "sfx sfx--" + (d.sfxPos || "tr");
        sfx.textContent = d.sfx;
        panel.appendChild(sfx);
      }

      // a balloon line if available
      if (d.lines[p]) {
        panel.appendChild(buildBalloon(d.lines[p], p, d.layout));
      }
      panels.appendChild(panel);
    }

    // footer
    const foot = document.createElement("footer");
    foot.className = "comic__foot";
    const cont = document.createElement("span");
    cont.textContent = i + 1 < TOTAL ? "Continued ›" : "End of issue";
    const credit = document.createElement("span");
    credit.textContent = "Neon Ronin · Stealthis Comics";
    foot.append(credit, cont);

    comic.append(bann, panels, foot);
    return comic;
  }

  /* ---------- zoom ---------- */
  function applyZoom() {
    const comic = pageMount.querySelector(".comic");
    if (!comic) return;
    comic.style.transformOrigin = zoomOrigin;
    comic.style.transform = "scale(" + zoom / 100 + ")";
    zoomVal.textContent = zoom + "%";
    zoomSlider.value = String(zoom);
    pageMount.classList.toggle("is-zoomed", zoom > 100);
    pageMount.classList.toggle("page-mount", true);
  }

  function setZoom(v, origin) {
    zoom = Math.max(100, Math.min(300, Math.round(v)));
    if (origin) zoomOrigin = origin;
    if (zoom === 100) zoomOrigin = "center center";
    applyZoom();
  }

  /* ---------- render current page ---------- */
  function render(direction) {
    const node = buildPage(current);

    const swap = () => {
      pageMount.innerHTML = "";
      pageMount.appendChild(node);
      zoom = 100;
      zoomOrigin = "center center";
      applyZoom();
      counterCur.textContent = String(current + 1);
      pageSelect.value = String(current);
      updateThumbs();
      prevBtn.disabled = current === 0;
      nextBtn.disabled = current === TOTAL - 1;
      pageFlip.classList.remove("is-flip-next", "is-flip-prev");
      busy = false;
    };

    const reduce = window.matchMedia("(prefers-reduced-motion: reduce)").matches;
    if (direction && !reduce) {
      busy = true;
      pageFlip.classList.add(direction === "next" ? "is-flip-next" : "is-flip-prev");
      setTimeout(swap, 230);
    } else {
      swap();
    }
  }

  function goTo(idx, direction, announce) {
    idx = Math.max(0, Math.min(TOTAL - 1, idx));
    if (idx === current && !direction) return;
    if (busy) return;
    const dir = direction || (idx > current ? "next" : idx < current ? "prev" : null);
    current = idx;
    render(dir);
    if (announce !== false) toast("Page " + (current + 1) + " of " + TOTAL);
  }

  function next() {
    if (current >= TOTAL - 1) {
      toast("Last page");
      return;
    }
    goTo(current + 1, "next", false);
  }
  function prev() {
    if (current <= 0) {
      toast("First page");
      return;
    }
    goTo(current - 1, "prev", false);
  }

  /* ---------- thumbnails ---------- */
  function buildThumbs() {
    const frag = document.createDocumentFragment();
    for (let i = 0; i < TOTAL; i++) {
      const li = document.createElement("li");
      li.className = "thumb";
      const btn = document.createElement("button");
      btn.type = "button";
      btn.className = "thumb__btn";
      btn.setAttribute("aria-label", "Go to page " + (i + 1));
      const mini = document.createElement("span");
      mini.className = "thumb__mini";
      const scene = pageData(i).scene;
      for (let c = 0; c < 4; c++) {
        const cell = document.createElement("span");
        cell.className = "thumb__cell panel--" + (c % 2 === 0 ? scene : pageData(i).scene2);
        mini.appendChild(cell);
      }
      const no = document.createElement("span");
      no.className = "thumb__no";
      no.textContent = String(i + 1);
      btn.append(mini, no);
      btn.addEventListener("click", () => {
        goTo(i);
      });
      li.appendChild(btn);
      frag.appendChild(li);
    }
    thumbsList.appendChild(frag);
  }

  function updateThumbs() {
    const btns = thumbsList.querySelectorAll(".thumb__btn");
    btns.forEach((b, i) => {
      const active = i === current;
      b.classList.toggle("is-active", active);
      b.setAttribute("aria-current", active ? "true" : "false");
      if (active && thumbStrip.dataset.open === "true") {
        b.scrollIntoView({ block: "nearest", inline: "center", behavior: "smooth" });
      }
    });
  }

  /* ---------- page-jump select ---------- */
  function buildSelect() {
    for (let i = 0; i < TOTAL; i++) {
      const opt = document.createElement("option");
      opt.value = String(i);
      opt.textContent = "Page " + (i + 1) + " / " + TOTAL;
      pageSelect.appendChild(opt);
    }
  }

  /* ---------- fit mode ---------- */
  function setFit(mode) {
    stage.dataset.fit = mode;
    const isW = mode === "width";
    fitWidth.classList.toggle("is-active", isW);
    fitHeight.classList.toggle("is-active", !isW);
    fitWidth.setAttribute("aria-pressed", String(isW));
    fitHeight.setAttribute("aria-pressed", String(!isW));
    setZoom(100);
    toast(isW ? "Fit to width" : "Fit to height");
  }

  /* ---------- wire events ---------- */
  prevBtn.addEventListener("click", prev);
  nextBtn.addEventListener("click", next);

  pageSelect.addEventListener("change", () => {
    goTo(parseInt(pageSelect.value, 10));
  });

  fitWidth.addEventListener("click", () => setFit("width"));
  fitHeight.addEventListener("click", () => setFit("height"));

  zoomSlider.addEventListener("input", () => setZoom(parseInt(zoomSlider.value, 10)));
  zoomIn.addEventListener("click", () => setZoom(zoom + 25));
  zoomOut.addEventListener("click", () => setZoom(zoom - 25));
  zoomReset.addEventListener("click", () => {
    setZoom(100);
    toast("Zoom reset");
  });

  // double-click to zoom into the clicked point
  pageMount.addEventListener("dblclick", (e) => {
    const comic = pageMount.querySelector(".comic");
    if (!comic) return;
    if (zoom > 100) {
      setZoom(100);
      return;
    }
    const r = comic.getBoundingClientRect();
    const x = ((e.clientX - r.left) / r.width) * 100;
    const y = ((e.clientY - r.top) / r.height) * 100;
    setZoom(200, x + "% " + y + "%");
  });

  // thumbnail strip toggle
  thumbToggle.addEventListener("click", () => {
    const open = thumbStrip.dataset.open !== "true";
    thumbStrip.dataset.open = String(open);
    thumbToggle.setAttribute("aria-expanded", String(open));
    if (open) updateThumbs();
  });

  // keyboard navigation
  document.addEventListener("keydown", (e) => {
    if (/^(INPUT|SELECT|TEXTAREA)$/.test(e.target.tagName)) return;
    switch (e.key) {
      case "ArrowRight":
      case "PageDown":
        e.preventDefault();
        next();
        break;
      case "ArrowLeft":
      case "PageUp":
        e.preventDefault();
        prev();
        break;
      case "Home":
        e.preventDefault();
        goTo(0);
        break;
      case "End":
        e.preventDefault();
        goTo(TOTAL - 1);
        break;
      case "+":
      case "=":
        e.preventDefault();
        setZoom(zoom + 25);
        break;
      case "-":
        e.preventDefault();
        setZoom(zoom - 25);
        break;
      case "0":
        e.preventDefault();
        setZoom(100);
        break;
      default:
        break;
    }
  });

  /* ---------- init ---------- */
  counterTot.textContent = String(TOTAL);
  stage.dataset.fit = "width";
  buildSelect();
  buildThumbs();
  render();
  toast("Use ← → to turn pages · double-click to zoom");
})();

<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" />
    <title>Neon Ronin #07 — Paged Comic Reader</title>
    <link rel="preconnect" href="https://fonts.googleapis.com" />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
    <link
      href="https://fonts.googleapis.com/css2?family=Bangers&family=Inter:wght@400;500;600;700;800&display=swap"
      rel="stylesheet"
    />
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="reader" id="reader">
      <!-- Top chrome -->
      <header class="bar bar--top">
        <div class="series">
          <span class="series__sfx" aria-hidden="true">POW!</span>
          <div class="series__meta">
            <strong class="series__title">Neon Ronin</strong>
            <span class="series__issue">Issue&nbsp;#07 — &ldquo;Static Bloom&rdquo;</span>
          </div>
        </div>

        <div class="topctrl">
          <label class="jump">
            <span class="jump__label">Page</span>
            <select id="pageSelect" class="jump__select" aria-label="Jump to page"></select>
          </label>

          <div class="seg" role="group" aria-label="Fit mode">
            <button class="seg__btn is-active" id="fitWidth" type="button" aria-pressed="true">Fit width</button>
            <button class="seg__btn" id="fitHeight" type="button" aria-pressed="false">Fit height</button>
          </div>
        </div>
      </header>

      <!-- Stage -->
      <main class="stage" id="stage" aria-label="Comic page viewer">
        <button class="nav nav--prev" id="prevBtn" type="button" aria-label="Previous page" title="Previous (←)">
          <span aria-hidden="true">‹</span>
        </button>

        <div class="stage__inner" id="stageInner">
          <div class="page-flip" id="pageFlip">
            <!-- the comic page is injected by JS into .page-mount -->
            <div class="page-mount" id="pageMount"></div>
          </div>
        </div>

        <button class="nav nav--next" id="nextBtn" type="button" aria-label="Next page" title="Next (→)">
          <span aria-hidden="true">›</span>
        </button>
      </main>

      <!-- Bottom chrome -->
      <footer class="bar bar--bottom">
        <div class="counter" aria-live="polite">
          <span class="counter__cur" id="counterCur">1</span>
          <span class="counter__sep">/</span>
          <span class="counter__tot" id="counterTot">24</span>
        </div>

        <div class="zoom">
          <button class="zoom__btn" id="zoomOut" type="button" aria-label="Zoom out">−</button>
          <input
            id="zoomSlider"
            class="zoom__slider"
            type="range"
            min="100"
            max="300"
            step="5"
            value="100"
            aria-label="Zoom level"
          />
          <button class="zoom__btn" id="zoomIn" type="button" aria-label="Zoom in">+</button>
          <output class="zoom__val" id="zoomVal">100%</output>
          <button class="zoom__btn zoom__btn--reset" id="zoomReset" type="button" aria-label="Reset zoom">Reset</button>
        </div>

        <button class="thumbtoggle" id="thumbToggle" type="button" aria-expanded="false" aria-controls="thumbStrip">
          Pages
        </button>
      </footer>

      <!-- Thumbnail strip -->
      <nav class="thumbs" id="thumbStrip" aria-label="Page thumbnails" data-open="false">
        <ul class="thumbs__list" id="thumbsList"></ul>
      </nav>
    </div>

    <div class="toast" id="toast" role="status" aria-live="polite"></div>

    <script src="script.js"></script>
  </body>
</html>

Paged Comic Reader (page flip · zoom)

An immersive, full-screen reader for the fictional manga-noir series Neon Ronin. The dark chrome frames a single large page rendered entirely in CSS — thick inked panel borders with gutters, a Ben-Day halftone wash, gradient scene backgrounds (neon, storm, dawn), tiny silhouette figures, captioned boxes, tailed speech balloons, and oversized Bangers SFX lettering. Each of the 24 pages uses one of several panel layouts so the issue reads like a real book.

Big accent arrows turn pages with a 3D rotateY page-flip, updating a Bangers-style 7 / 24 counter. A page-jump dropdown and a collapsible thumbnail strip (mini panel previews with active-page highlighting) let readers leap anywhere. A segmented Fit width / Fit height toggle reframes the page, while a zoom slider, +/− buttons, and double-click-to-point magnify the art around the exact spot you clicked — double-click again to reset.

Everything is keyboard-driven: left/right arrows and PageUp/PageDown turn pages, Home/End jump to the ends, and + - 0 control zoom. Buttons expose aria-pressed and aria-label, the viewer announces page changes via a polite live region, and a small toast() helper surfaces hints and edge cases. The layout stays usable down to ~360px, collapsing controls and shrinking the page to fit.

Illustrative UI only — fictional series, characters, and data.