FLIP gallery modal

<main class="study"><p class="study-label">공식 API 기반 · 독립 예제</p><header><h2>같은 도형의 자리 바꾸기</h2><p>선택한 도형 하나를 대화상자로 옮깁니다. 원래 자리에는 같은 크기의 빈칸을 남깁니다.</p></header><div class="stage gallery-stage"><div class="tile-grid"><button class="gallery-opener" type="button" aria-label="Mint 카드 열기"><span class="gallery-visual" style="--tile:#95efd2"><svg viewBox="0 0 120 120" aria-hidden="true"><path d="m60 7 15 31 34 5-25 24 6 34-30-16-30 16 6-34L11 43l34-5Z" fill="currentColor"/></svg><span>Mint / 01</span></span></button><button class="gallery-opener" type="button" aria-label="Rose 카드 열기"><span class="gallery-visual" style="--tile:#fbadce"><svg viewBox="0 0 120 120" aria-hidden="true"><path d="m60 7 15 31 34 5-25 24 6 34-30-16-30 16 6-34L11 43l34-5Z" fill="currentColor"/></svg><span>Rose / 02</span></span></button><button class="gallery-opener" type="button" aria-label="Amber 카드 열기"><span class="gallery-visual" style="--tile:#ffd28c"><svg viewBox="0 0 120 120" aria-hidden="true"><path d="m60 7 15 31 34 5-25 24 6 34-30-16-30 16 6-34L11 43l34-5Z" fill="currentColor"/></svg><span>Amber / 03</span></span></button><button class="gallery-opener" type="button" aria-label="Violet 카드 열기"><span class="gallery-visual" style="--tile:#b5a1ff"><svg viewBox="0 0 120 120" aria-hidden="true"><path d="m60 7 15 31 34 5-25 24 6 34-30-16-30 16 6-34L11 43l34-5Z" fill="currentColor"/></svg><span>Violet / 04</span></span></button><button class="gallery-opener" type="button" aria-label="Sky 카드 열기"><span class="gallery-visual" style="--tile:#75d8ed"><svg viewBox="0 0 120 120" aria-hidden="true"><path d="m60 7 15 31 34 5-25 24 6 34-30-16-30 16 6-34L11 43l34-5Z" fill="currentColor"/></svg><span>Sky / 05</span></span></button><button class="gallery-opener" type="button" aria-label="Coral 카드 열기"><span class="gallery-visual" style="--tile:#fc7f8e"><svg viewBox="0 0 120 120" aria-hidden="true"><path d="m60 7 15 31 34 5-25 24 6 34-30-16-30 16 6-34L11 43l34-5Z" fill="currentColor"/></svg><span>Coral / 06</span></span></button></div></div><div class="controls"><label><input id="static-mode" type="checkbox">정적 보기</label></div><p class="readout" id="reading" aria-live="off"></p><dialog id="gallery-dialog" aria-labelledby="dialog-title"><div class="dialog-heading"><h3 id="dialog-title">선택한 카드</h3><button id="close-dialog" type="button" autofocus>닫기</button></div><div id="dialog-slot"></div></dialog></main>

*{box-sizing:border-box}body{background:#111522;color:#f5f2eb;font-family:system-ui,sans-serif;margin:0}button{font:inherit}.study{margin:0 auto;max-width:1100px;min-height:100vh;padding:clamp(20px,4vw,42px)}.study-label{color:#95efd2;font-size:12px;letter-spacing:.08em;margin:0 0 24px}header h2{font-size:clamp(24px,4vw,40px);letter-spacing:-.04em;margin:0 0 12px}header p{color:#aeb7c9;line-height:1.6;margin:0 0 24px;max-width:62ch}.controls{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0}button{background:#26314b;border:1px solid #617394;border-radius:9px;color:#f5f2eb;cursor:pointer;padding:9px 14px}button:hover{background:#334261}button:focus-visible{outline:3px solid #95efd2;outline-offset:3px}button:disabled{cursor:default;opacity:.45}.stage{align-items:center;background:radial-gradient(ellipse at top,#243253,#141c2d);border:1px solid #3d4c68;border-radius:20px;display:flex;justify-content:center;min-height:220px;overflow:hidden;position:relative}.note{color:#aeb7c9;font-size:13px;line-height:1.5}.readout{color:#95efd2;font-family:ui-monospace,monospace;font-size:13px;min-height:2em}.stage svg{display:block;max-width:100%}code{font-family:ui-monospace,monospace}button[aria-pressed="true"]{background:#95efd2;color:#111522}


.study{padding:18px;max-width:960px}.study-label{margin-bottom:10px}header h2{font-size:clamp(22px,4vw,32px);margin-bottom:8px}header p{font-size:14px;margin-bottom:16px}.controls{align-items:center;gap:9px;margin:14px 0}.controls label{align-items:center;color:#cbd4e3;display:flex;flex-wrap:wrap;font-size:13px;gap:7px}.controls input[type=range]{accent-color:#95efd2;max-width:145px}.controls select{background:#26314b;border:1px solid #617394;border-radius:7px;color:#f5f2eb;font:inherit;padding:6px}.stage{min-height:180px}.readout{line-height:1.5;margin:8px 0}.small-code{background:#172036;border:1px solid #354258;border-radius:10px;color:#c3d1e7;font-size:12px;line-height:1.5;max-height:180px;overflow:auto;padding:12px;white-space:pre-wrap;word-break:break-word}.pair{display:flex;gap:12px;justify-content:center}.pair figure{flex:1;margin:0;max-width:300px;min-width:0;padding:8px}.pair figcaption{color:#aeb7c9;font-family:ui-monospace,monospace;font-size:12px;margin-bottom:6px;text-align:center}.pair svg{display:block;max-height:210px;width:100%}.tile-art{align-items:center;border-radius:14px;color:#152039;display:flex;justify-content:center}.tile-art svg{height:65%;width:65%}.menu-stage{min-height:196px;padding:18px}.menu-panels{display:flex;gap:10px;max-width:570px;width:100%}.menu-panel{align-items:center;background:linear-gradient(135deg,#95efd2,#75d8ed);border-radius:14px;color:#142137;display:flex;flex:1;flex-direction:column;font-weight:650;gap:10px;justify-content:center;min-height:135px;min-width:0;padding:12px}.menu-panel:nth-child(2){background:linear-gradient(135deg,#fbadce,#897dff)}.menu-panel:nth-child(3){background:linear-gradient(135deg,#ffd28c,#fc7f8e)}.menu-panel svg{height:58px;width:58px}.icon-bars{display:inline-flex;flex-direction:column;gap:5px;margin-right:7px;vertical-align:middle}.icon-bars span{background:currentColor;display:block;height:2px;width:17px}.endpoint-note{color:#aeb7c9;font-size:12px;line-height:1.5}button[hidden],[hidden]{display:none!important}@media(max-width:380px){.study{padding:14px}.controls label{max-width:100%}.menu-panels{gap:6px}.menu-panel{font-size:12px;padding:7px}.pair{gap:0}}

.gallery-stage{padding:12px}.tile-grid{display:grid;gap:10px;grid-template-columns:repeat(3,minmax(0,1fr));max-width:560px;width:100%}.gallery-opener{background:none;border:0;min-width:0;padding:0}.gallery-visual{align-items:center;background:var(--tile);border-radius:13px;color:#142137;display:flex;flex-direction:column;font-size:11px;font-weight:700;gap:7px;height:104px;justify-content:center;padding:10px;width:100%}.gallery-visual svg{height:56px;width:56px}.gallery-placeholder{display:block;max-width:100%}#gallery-dialog{background:#172036;border:1px solid #617394;border-radius:18px;color:#f5f2eb;margin:auto;max-height:90vh;max-width:min(80vw,560px);overflow:auto;padding:16px;width:560px}#gallery-dialog::backdrop{background:#080c16bb}.dialog-heading{align-items:center;display:flex;gap:12px;justify-content:space-between;margin-bottom:14px}.dialog-heading h3{font-size:16px;margin:0}.dialog-heading button{padding:8px 12px}.gallery-visual.expanded{height:min(50vh,300px);min-height:130px}.gallery-visual.expanded svg{height:70%;max-height:210px;width:70%}.gallery-visual.expanded>span{font-size:14px}@media(max-width:380px){.tile-grid{gap:6px}.gallery-visual{font-size:10px;height:95px;padding:7px}.gallery-visual svg{height:48px;width:48px}}

gsap.registerPlugin(Flip);

const q=selector=>document.querySelector(selector),qa=selector=>Array.from(document.querySelectorAll(selector));
const studyAbort=new AbortController(),studyCleanup=[];
const listen=(target,type,handler)=>target.addEventListener(type,handler,{signal:studyAbort.signal});
const preference=matchMedia('(prefers-reduced-motion: reduce)'),staticControl=q('#static-mode');
staticControl.checked=preference.matches;staticControl.disabled=preference.matches;
const isStatic=()=>staticControl.checked||preference.matches;
let applyMode=()=>{};
listen(staticControl,'change',()=>applyMode());
listen(preference,'change',()=>{staticControl.checked=preference.matches;staticControl.disabled=preference.matches;applyMode();});
listen(window,'pagehide',()=>{studyCleanup.forEach(cleanup=>cleanup());studyAbort.abort();});
const reading=text=>q('#reading').textContent=text;

const dialog=q('#gallery-dialog'),slot=q('#dialog-slot'),openers=qa('.gallery-opener');
let activeVisual=null,activeOpener=null,originalParent=null,originalNext=null,placeholder=null,modalTween=null,phase='closed',queuedClose=false;
function reflect(){reading('상태: '+phase+(queuedClose?' · 닫기 1회 대기':''));}
function restoreVisual(){if(!activeVisual)return;activeVisual.classList.remove('expanded');if(originalNext?.parentNode===originalParent)originalParent.insertBefore(activeVisual,originalNext);else originalParent.append(activeVisual);placeholder?.remove();placeholder=null;}
function finishClose(){phase='closed';queuedClose=false;const opener=activeOpener;activeVisual=null;activeOpener=null;originalParent=null;originalNext=null;modalTween=null;reflect();opener?.focus({preventScroll:true});}
function closeModal(){if(phase==='opening'){queuedClose=true;reflect();return;}if(phase!=='open')return;phase='closing';queuedClose=false;const state=Flip.getState(activeVisual);dialog.close();restoreVisual();reflect();if(isStatic()){gsap.set(activeVisual,{clearProps:'transform,opacity'});finishClose();return;}modalTween=Flip.from(state,{duration:.6,ease:'power2.inOut',onComplete:finishClose});}
function finishOpen(){phase='open';modalTween=null;reflect();if(queuedClose)closeModal();}
function openModal(opener){if(phase!=='closed')return;activeOpener=opener;activeVisual=opener.querySelector('.gallery-visual');originalParent=activeVisual.parentNode;originalNext=activeVisual.nextSibling;
const state=Flip.getState(activeVisual),bounds=activeVisual.getBoundingClientRect();placeholder=document.createElement('span');placeholder.className='gallery-placeholder';placeholder.style.width=bounds.width+'px';placeholder.style.height=bounds.height+'px';placeholder.setAttribute('aria-hidden','true');originalParent.insertBefore(placeholder,activeVisual);
phase='opening';queuedClose=false;dialog.showModal();activeVisual.classList.add('expanded');slot.append(activeVisual);q('#dialog-title').textContent=opener.getAttribute('aria-label').replace(' 열기','');q('#close-dialog').focus({preventScroll:true});reflect();if(isStatic()){finishOpen();return;}modalTween=Flip.from(state,{duration:.6,ease:'power2.inOut',onComplete:finishOpen});}
openers.forEach(opener=>listen(opener,'click',()=>openModal(opener)));listen(q('#close-dialog'),'click',closeModal);listen(dialog,'cancel',event=>{event.preventDefault();closeModal();});
applyMode=()=>{if(!modalTween)return;const running=modalTween;running.progress(1);running.kill();};
studyCleanup.push(()=>{modalTween?.kill();if(dialog.open)dialog.close();restoreVisual();});reflect();

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GSAP 3.15.0: Copyright 2026, GreenSock. All rights reserved. Subject to https://gsap.com/standard-license. Original library notices are preserved.