:root{
  --ink:#15171c; --ink2:#2a2d35; --mut:#8a909b; --line:#e9eaee; --line2:#dcdee3;
  --panel:#ffffff; --work:#eceef1; --chip:#f4f5f7;
  --accent:#15171c;           /* chrome 강조는 잉크(무채색) */
  --radius:14px;
  font-synthesis:none;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:-apple-system,"SF Pro Text","Pretendard",system-ui,sans-serif;
  background:var(--work);color:var(--ink);overflow:hidden;-webkit-font-smoothing:antialiased}
#app{height:100vh;display:flex;flex-direction:column}
.hidden{display:none!important}

/* nav */
.nav{display:flex;align-items:center;justify-content:space-between;
  height:54px;padding:0 18px;background:var(--panel);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:8px}
.brand .logo{width:28px;height:28px;display:grid;place-items:center;background:var(--ink);
  color:#fff;border-radius:8px;font-size:15px}
.brand b{font-size:15px;font-weight:650;letter-spacing:-.2px}
.brand .sub{font-size:12.5px;color:var(--mut);margin-left:2px}
.nav-r{display:flex;align-items:center;gap:10px}
.device{font-size:11.5px;color:var(--mut)}
.ghost{padding:7px 12px;background:var(--panel);border:1px solid var(--line2);color:var(--ink);
  border-radius:9px;font-size:13px;cursor:pointer}
.ghost:hover{border-color:#c4c7cd}
.dl{padding:8px 16px;border:none;border-radius:9px;background:var(--ink);color:#fff;
  font-size:13.5px;font-weight:600;cursor:pointer;transition:.12s}
.dl:hover:not(:disabled){background:#000}
.dl:disabled{background:#e7e8ec;color:#abb0b8;cursor:not-allowed}

/* layout */
.work{flex:1;display:grid;grid-template-columns:1fr 312px;min-height:0}
.canvaswrap{position:relative;display:flex;align-items:center;justify-content:center;
  padding:40px;min-height:0;background:
    radial-gradient(circle at 50% 40%, #f3f4f6 0, var(--work) 70%)}

/* empty / drop */
.drop{width:min(560px,100%);aspect-ratio:4/3;border:1.5px dashed var(--line2);border-radius:20px;
  display:grid;place-items:center;cursor:pointer;background:rgba(255,255,255,.6);transition:.15s}
.drop.hot{border-color:var(--ink);background:#fff}
.drop-in{text-align:center;padding:20px}
.drop-ic{font-size:30px;color:var(--mut);margin-bottom:10px}
.drop-in p{font-size:15px;margin-bottom:5px}
.drop-in small{font-size:12px;color:var(--mut)}
.samples{display:flex;gap:9px;justify-content:center;margin-top:20px}
.samples img{width:52px;height:52px;object-fit:cover;border-radius:11px;border:1px solid var(--line2);
  cursor:pointer;transition:.12s}
.samples img:hover{transform:translateY(-2px);border-color:var(--ink)}

/* shot preview */
.shot{position:relative;max-width:100%;max-height:100%;display:flex;align-items:center;justify-content:center}
.cmp{position:absolute;top:-30px;left:0;z-index:4;padding:5px 11px;font-size:12px;
  background:var(--panel);border:1px solid var(--line2);border-radius:8px;color:var(--ink2);
  cursor:pointer;user-select:none}
.cmp:active{background:var(--ink);color:#fff}
.frame{display:grid;place-items:center;padding:12%;border-radius:8%;overflow:hidden;
  max-width:72vw;max-height:74vh;transition:background .18s,border-radius .12s,padding .12s;
  box-shadow:0 18px 50px -20px rgba(20,22,28,.35)}
.frame.checker{background:
  conic-gradient(#e2e5ea 25%,#f4f5f7 0 50%,#e2e5ea 0 75%,#f4f5f7 0);background-size:22px 22px}
.subject{display:block;max-width:100%;max-height:62vh;width:auto;height:auto;
  filter:drop-shadow(0 14px 18px rgba(0,0,0,.28))}

/* busy */
.busy{position:absolute;inset:0;display:grid;place-items:center;gap:14px;
  background:rgba(236,238,241,.72);backdrop-filter:blur(3px);z-index:6}
.busy p{color:var(--mut);font-size:13px;max-width:320px;text-align:center;line-height:1.5}
.spinner{width:36px;height:36px;border:3px solid var(--line2);border-top-color:var(--ink);
  border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* panel */
.panel{background:var(--panel);border-left:1px solid var(--line);padding:18px;
  overflow-y:auto;display:flex;flex-direction:column;gap:20px}
.group h3{font-size:11.5px;font-weight:600;color:var(--mut);letter-spacing:.3px;margin-bottom:11px}

/* swatches */
.swatches{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}
.swatches .sw{aspect-ratio:1;border-radius:10px;border:1px solid var(--line2);cursor:pointer;
  position:relative;transition:.12s}
.swatches .sw:hover{transform:translateY(-1px)}
.swatches .sw.on{box-shadow:0 0 0 2px var(--panel),0 0 0 4px var(--ink)}
.swatches .sw.checker{background:
  conic-gradient(#dfe2e7 25%,#fff 0 50%,#dfe2e7 0 75%,#fff 0);background-size:10px 10px}
.customrow{display:flex;align-items:center;gap:8px;margin-top:11px;font-size:12.5px;color:var(--ink2);cursor:pointer}
.customrow .dot{width:18px;height:18px;border-radius:6px;border:1px solid var(--line2);background:#ffd6e7}
.customrow input[type=color]{width:26px;height:26px;border:none;background:none;margin-left:auto;cursor:pointer}

/* sliders */
.slider{margin-bottom:14px}
.slider:last-child{margin-bottom:0}
.slider.sm{margin-bottom:10px}
.slider span{display:flex;justify-content:space-between;font-size:12.5px;margin-bottom:7px;color:var(--ink2)}
.slider em{color:var(--ink);font-style:normal;font-weight:600}
input[type=range]{width:100%;accent-color:var(--ink);height:4px;cursor:pointer}

/* advanced */
.adv{border:1px solid var(--line);border-radius:12px;background:#fafbfc}
.adv summary{list-style:none;cursor:pointer;padding:12px 14px;font-size:13px;font-weight:600;
  display:flex;align-items:center;gap:6px}
.adv summary::-webkit-details-marker{display:none}
.adv summary::before{content:"▸";color:var(--mut);font-size:11px;transition:.15s}
.adv[open] summary::before{transform:rotate(90deg)}
.adv summary span{font-weight:400;color:var(--mut);font-size:11.5px}
.adv-in{padding:4px 14px 14px;display:flex;flex-direction:column;gap:13px}
.field label{display:block;font-size:11.5px;color:var(--mut);margin-bottom:7px}
.seg{display:flex;gap:5px}
.seg.grid2{display:grid;grid-template-columns:1fr 1fr;gap:5px}
.seg button{flex:1;padding:7px 5px;background:#fff;border:1px solid var(--line2);color:var(--mut);
  border-radius:8px;font-size:12.5px;cursor:pointer;transition:.12s}
.seg button:hover{color:var(--ink)}
.seg button.on{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:600}
.switch{display:flex;align-items:center;gap:10px;cursor:pointer}
.switch input{display:none}
.track{width:36px;height:21px;border-radius:999px;background:#d4d8df;position:relative;flex:none;transition:.15s}
.thumb{position:absolute;top:2px;left:2px;width:17px;height:17px;border-radius:50%;background:#fff;
  transition:.15s;box-shadow:0 1px 2px rgba(0,0,0,.18)}
.switch input:checked + .track{background:var(--ink)}
.switch input:checked + .track .thumb{left:17px}
.switch .lbl{font-size:12.5px}.switch .lbl small{display:block;font-size:10.5px;color:var(--mut)}
.reproc{padding:9px;border:1px solid var(--line2);background:#fff;border-radius:9px;font-size:12.5px;
  cursor:pointer;color:var(--ink)}
.reproc:hover{border-color:var(--ink)}

.stats{font-size:11px;color:var(--mut);line-height:1.7;margin-top:auto;
  font-variant-numeric:tabular-nums}
.stats b{color:var(--ink2);font-weight:600}

@media(max-width:860px){.work{grid-template-columns:1fr}.panel{display:none}}