Simple Grid FLIP 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();

Locally authored companion HTML/CSS/control wiring: MIT License.
Copyright (c) 2026 StyleGallery contributors

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

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The typed source-inputs.json and study-brief.json preserve official catalog, documentation and original library source pointers. This is independently authored API research, not a recovered CodePen source or documentation snippet. The local MIT notice does not assign new licenses to referenced third-party sources.
GSAP 3.15.0: Copyright 2026, GreenSock. All rights reserved. Subject to https://gsap.com/standard-license. Original library notices are preserved.