:root{
  --bg:#ECEDEF;
  --panel:#F7F7F8;
  --ink:#16181F;
  --muted:#6C707C;
  --line:#D5D7DC;
  --accent:#2B45F5;
  --radius:6px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);
  font-family:'Noto Sans KR',system-ui,sans-serif;
  line-height:1.6;-webkit-font-smoothing:antialiased;
}
ul{list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

.layout{display:grid;grid-template-columns:360px 1fr;min-height:100vh}

/* 사이드 */
.side{
  position:sticky;top:0;height:100vh;
  display:flex;flex-direction:column;justify-content:space-between;
  padding:48px 32px;border-right:1px solid var(--line);
}
.who{word-break:keep-all}
.who-tag{font-size:13px;letter-spacing:.01em;color:var(--muted)}
.who h1{margin-top:12px;padding-bottom:14px;border-bottom:1px solid #B8803F;font-size:26px;font-weight:700;letter-spacing:-.02em;line-height:1.3}
.who-line{margin-top:22px;font-size:17px;font-weight:700;letter-spacing:-.02em;line-height:2.1}
.who-role{margin-top:18px;font-size:12px;letter-spacing:0;color:var(--muted)}

.filters{display:flex;flex-direction:column;gap:4px;margin:48px 0}
.filters button{
  display:flex;justify-content:space-between;align-items:baseline;
  padding:10px 0;text-align:left;
  font-size:22px;font-weight:500;letter-spacing:-.02em;
  color:var(--muted);transition:color .2s;
}
.filters button span{font-size:13px;font-weight:400;font-variant-numeric:tabular-nums}
.filters button:hover{color:var(--ink)}
.filters button[aria-pressed="true"]{color:var(--accent)}

.contact{font-size:14px;color:var(--muted);text-decoration:none;border-bottom:1px solid var(--line);align-self:flex-start;padding-bottom:2px}
.contact:hover{color:var(--ink);border-color:var(--ink)}

/* 그리드 */
.works{padding:48px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:40px 28px;align-items:start}
.card a,.card button{display:block;width:100%;text-align:left;text-decoration:none}
.thumb{
  position:relative;overflow:hidden;border-radius:var(--radius);
  border:1px solid var(--line);
  aspect-ratio:var(--ratio,16/10);
  padding:18px;
  background:#fff;
}
.thumb img{width:100%;height:100%;object-fit:contain;display:block;transition:transform .4s ease}
.card:hover .thumb img{transform:scale(1.02)}
.thumb.ph{display:grid;place-items:center;color:var(--muted);font-size:14px;padding:16px;text-align:center}
.badge{
  position:absolute;right:10px;top:10px;
  background:var(--ink);color:#fff;font-size:12px;
  padding:3px 10px;border-radius:99px;
}
.meta{display:flex;justify-content:space-between;gap:12px;margin-top:12px}
.meta strong{font-weight:500;font-size:16px}
.meta span{font-size:13px;color:var(--muted);white-space:nowrap}
.desc{margin-top:2px;font-size:13px;color:var(--muted);max-width:60ch}

.card[data-cat="web"]{--ratio:16/10}
.card[data-cat="detail"]{--ratio:3/4}
.card[data-cat="app"]{--ratio:4/5}
.card[data-cat="main"]{--ratio:16/10}

.empty{color:var(--muted);padding:40px 0}

/* 뷰어 */
.viewer{
  position:fixed;inset:0;margin:auto;
  width:min(1200px,94vw);height:92vh;max-width:none;max-height:none;
  border:0;border-radius:10px;background:var(--panel);color:var(--ink);
  padding:0;overflow:hidden;
}
.viewer[open]{display:flex;flex-direction:column}
.viewer::backdrop{background:rgba(14,16,22,.72)}
.viewer-bar{
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:14px 20px;border-bottom:1px solid var(--line);
}
.viewer-bar strong{font-weight:500;margin-right:10px}
.viewer-bar span{color:var(--muted);font-size:13px}
.viewer-bar p{font-size:13px;color:var(--muted);margin-top:4px;max-width:60ch}
.viewer-bar p:empty{display:none}
.viewer-actions{display:flex;gap:6px;flex-shrink:0}
.viewer-actions button{padding:6px 14px;border:1px solid var(--line);border-radius:99px;font-size:14px;background:#fff}
.viewer-actions button:hover{border-color:var(--ink)}
.viewer-body{flex:1;overflow:auto;background:var(--bg);display:flex;justify-content:center;padding:24px}
.viewer-body img{width:min(100%,960px);height:auto;display:block;align-self:flex-start;border-radius:4px}
.viewer-body.fit img{width:100%;height:100%;object-fit:contain;align-self:center}
.viewer-body{scrollbar-width:auto}
.viewer-body::-webkit-scrollbar{width:12px}
.viewer-body::-webkit-scrollbar-thumb{background:#B4B7BF;border-radius:6px;border:3px solid var(--bg)}
.viewer-body.ph{align-items:center;color:var(--muted)}

/* 반응형 */
@media (max-width:900px){
  .layout{grid-template-columns:1fr}
  .side{position:static;height:auto;border-right:0;border-bottom:1px solid var(--line);padding:28px 20px 20px}
  .filters{flex-direction:row;flex-wrap:wrap;gap:4px 20px;margin:20px 0 16px}
  .filters button{font-size:16px;gap:6px}
  .contact{display:none}
  .works{padding:28px 20px}
  .grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
  .viewer{width:100vw;height:100dvh;border-radius:0}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important}
}