:root{
  --bg:#EEF0F6;
  --ink:#14161C; --sub:#5D6271; --mute:#959AA8; --line:rgba(20,22,28,.08);
  --glass:rgba(255,255,255,.52); --glass-2:rgba(255,255,255,.72); --glass-b:rgba(255,255,255,.75);
  --glass-hi:inset 0 1px 0 rgba(255,255,255,.9);
  --shadow:0 1px 1px rgba(30,34,60,.04),0 12px 36px -18px rgba(30,34,60,.30);
  --cta:#14161C; --cta-ink:#fff;
  --ok:#2F8F6B; --err:#D0493A; --acc:#7C88DB;
  --b1:#C8CBF6; --b2:#BFE5D8; --b3:#F5D2C3; --b4:#E3D5F3;
  --sheet:rgba(246,247,251,.9);
  --r:22px;
  --font:'Pretendard Variable',Pretendard,-apple-system,BlinkMacSystemFont,system-ui,'Apple SD Gothic Neo','Malgun Gothic',sans-serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0E1016;
  --ink:#ECEEF4; --sub:#A2A7B6; --mute:#6D7384; --line:rgba(255,255,255,.08);
  --glass:rgba(30,33,44,.46); --glass-2:rgba(38,42,56,.7); --glass-b:rgba(255,255,255,.10);
  --glass-hi:inset 0 1px 0 rgba(255,255,255,.07);
  --shadow:0 1px 1px rgba(0,0,0,.2),0 16px 40px -18px rgba(0,0,0,.7);
  --cta:#ECEEF4; --cta-ink:#0E1016;
  --ok:#5BC79C; --err:#FF7A6B; --acc:#9AA4F0;
  --b1:#2C3070; --b2:#17463E; --b3:#5A3326; --b4:#3D2A5C;
  --sheet:rgba(22,25,34,.94);
}}
:root[data-theme="dark"]{
  --bg:#0E1016;
  --ink:#ECEEF4; --sub:#A2A7B6; --mute:#6D7384; --line:rgba(255,255,255,.08);
  --glass:rgba(30,33,44,.46); --glass-2:rgba(38,42,56,.7); --glass-b:rgba(255,255,255,.10);
  --glass-hi:inset 0 1px 0 rgba(255,255,255,.07);
  --shadow:0 1px 1px rgba(0,0,0,.2),0 16px 40px -18px rgba(0,0,0,.7);
  --cta:#ECEEF4; --cta-ink:#0E1016;
  --ok:#5BC79C; --err:#FF7A6B; --acc:#9AA4F0;
  --b1:#2C3070; --b2:#17463E; --b3:#5A3326; --b4:#3D2A5C;
  --sheet:rgba(22,25,34,.94);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
[hidden]{display:none!important}
html{background:var(--bg);color:var(--ink);-webkit-text-size-adjust:100%;touch-action:manipulation}
body{margin:0;min-height:100vh;min-height:100dvh;font-family:var(--font);font-size:14px;letter-spacing:-.012em;line-height:1.45;
  background:transparent;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased}
button{font:inherit;color:inherit;letter-spacing:inherit;cursor:pointer}
svg{flex:none}

/* ── background ── */
.bg{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.bg i{position:absolute;border-radius:50%;filter:blur(70px);opacity:.9;will-change:transform}
.bg .b1{width:62vmax;height:62vmax;left:-18vmax;top:-22vmax;background:var(--b1);animation:f1 28s ease-in-out infinite alternate}
.bg .b2{width:50vmax;height:50vmax;right:-20vmax;top:8vmax;background:var(--b2);animation:f2 32s ease-in-out infinite alternate}
.bg .b3{width:46vmax;height:46vmax;left:-6vmax;bottom:-26vmax;background:var(--b3);animation:f3 36s ease-in-out infinite alternate}
.bg .b4{width:34vmax;height:34vmax;right:8vmax;bottom:-10vmax;background:var(--b4);animation:f1 30s ease-in-out infinite alternate-reverse}
@keyframes f1{to{transform:translate(6vmax,5vmax) scale(1.06)}}
@keyframes f2{to{transform:translate(-7vmax,6vmax) scale(.94)}}
@keyframes f3{to{transform:translate(5vmax,-6vmax) scale(1.08)}}
@media (prefers-reduced-motion:reduce){.bg i{animation:none}}

/* ── glass ── */
.glass{
  background:var(--glass);
  -webkit-backdrop-filter:blur(26px) saturate(170%);backdrop-filter:blur(26px) saturate(170%);
  border:1px solid var(--glass-b);
  box-shadow:var(--glass-hi),var(--shadow);
  border-radius:var(--r);
}

/* ── header ── */
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;
  width:100%;max-width:680px;margin:0 auto;padding:calc(14px + env(safe-area-inset-top)) 18px 6px}
.brand{display:inline-flex;align-items:center;gap:8px;color:var(--ink);text-decoration:none;font-weight:680;font-size:17px;letter-spacing:-.035em}
.brand .mark{width:26px;height:26px}
.local{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;font-weight:560;color:var(--sub);
  padding:5px 10px 5px 8px;border-radius:99px;background:var(--glass);border:1px solid var(--glass-b);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}
.local svg{width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round}

main{width:100%;max-width:680px;margin:0 auto;padding:10px 16px 24px;flex:1}

/* ── drop zone ── */
.drop{position:relative;display:grid;place-items:center;min-height:212px;padding:28px 18px;cursor:pointer;outline:none;
  transition:transform .25s cubic-bezier(.2,.8,.2,1),background .2s}
.drop::after{content:"";position:absolute;inset:10px;border-radius:calc(var(--r) - 8px);border:1.5px dashed rgba(124,136,219,.0);transition:border-color .2s}
.drop:hover,.drop:focus-visible{background:var(--glass-2)}
.drop.over{transform:scale(1.012);background:var(--glass-2)}
.drop.over::after{border-color:rgba(124,136,219,.55)}
.drop-in{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center}
.plus{width:54px;height:54px;border-radius:18px;display:grid;place-items:center;margin-bottom:8px;
  background:var(--cta);color:var(--cta-ink);box-shadow:0 10px 24px -10px rgba(20,22,28,.5);transition:transform .2s}
.drop:hover .plus{transform:translateY(-1px) rotate(90deg)}
.plus svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.drop-t{font-size:16px;font-weight:650;letter-spacing:-.025em}
.drop-s{font-size:12.5px;color:var(--sub)}
body.has .drop{min-height:0;padding:0;display:none}

/* ── queue ── */
.queue{display:flex;flex-direction:column;gap:10px}
.bar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 8px 8px 16px;border-radius:18px}
.count{font-weight:620;font-size:13.5px}
.count small{color:var(--sub);font-weight:500;margin-left:6px;font-size:12px}
.bar-r{display:flex;align-items:center;gap:6px}
.pill{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 12px;border-radius:99px;border:1px solid var(--line);background:var(--glass-2);font-size:12.5px;font-weight:560;color:var(--ink)}
.pill b{font-weight:680;letter-spacing:-.01em}
.pill span{color:var(--sub)}
.pill svg{width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.pill.icon{width:34px;padding:0;justify-content:center}
.pill.icon svg{width:16px;height:16px;stroke-width:1.8}

.merge{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:16px;font-size:13px;font-weight:560;cursor:pointer;user-select:none}
.merge input{position:absolute;opacity:0;pointer-events:none}
.sw{width:34px;height:20px;border-radius:99px;background:rgba(120,126,146,.32);position:relative;transition:background .2s;flex:none}
.sw::after{content:"";position:absolute;left:2px;top:2px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.25);transition:transform .2s}
.merge input:checked+.sw{background:var(--ok)}
.merge input:checked+.sw::after{transform:translateX(14px)}

.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.item{position:relative;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;padding:10px 10px 10px 10px;border-radius:18px;
  animation:pop .35s cubic-bezier(.2,.9,.25,1.1) both;overflow:hidden}
@keyframes pop{from{opacity:0;transform:translateY(6px) scale(.985)}}
.tile{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;overflow:hidden;position:relative;
  font-size:10px;font-weight:720;letter-spacing:.02em;text-transform:uppercase;color:#30344A;background:#E6E8F6}
.tile img{width:100%;height:100%;object-fit:cover}
.tile[data-c="image"]{background:linear-gradient(140deg,#F4D5C7,#E8BDB0)}
.tile[data-c="video"]{background:linear-gradient(140deg,#CFD3F7,#B3B9EE)}
.tile[data-c="audio"]{background:linear-gradient(140deg,#C9E9DD,#A9D9C8)}
.tile[data-c="doc"],.tile[data-c="text"],.tile[data-c="ebook"]{background:linear-gradient(140deg,#D3E1F5,#B8CDEE)}
.tile[data-c="hwp"]{background:linear-gradient(140deg,#CDE3F2,#A9CDE8)}
.tile[data-c="sheet"]{background:linear-gradient(140deg,#CFEBD5,#ADDBB8)}
.tile[data-c="slide"]{background:linear-gradient(140deg,#F6DCC2,#EFC59F)}
.tile[data-c="pdf"]{background:linear-gradient(140deg,#F4CFCF,#EAB1B1)}
.tile[data-c="archive"]{background:linear-gradient(140deg,#E7DDF4,#D2C2EC)}
.tile[data-c="font"]{background:linear-gradient(140deg,#EDE6D6,#DCD0B4)}
.tile[data-c="data"],.tile[data-c="sub"]{background:linear-gradient(140deg,#DDE5EA,#C5D2DA)}
.tile[data-c="none"]{background:rgba(140,146,166,.2);color:var(--sub)}

.meta{min-width:0;display:flex;flex-direction:column;gap:3px}
.name{font-weight:600;font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sub{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--sub);min-height:24px;flex-wrap:wrap}
.sub .sz{font-variant-numeric:tabular-nums}
.to{display:inline-flex;align-items:center;gap:4px;height:24px;padding:0 8px 0 10px;border-radius:99px;border:1px solid var(--line);
  background:var(--glass-2);font-size:11.5px;font-weight:700;letter-spacing:.01em;color:var(--ink);text-transform:uppercase}
.to svg{width:10px;height:10px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.to:disabled{opacity:.6;cursor:default}
.arrow{width:12px;height:12px;fill:none;stroke:var(--mute);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.opt{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:99px;border:1px solid var(--line);background:var(--glass-2);color:var(--sub);padding:0}
.opt svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round}
.state{font-size:11.5px;color:var(--sub);font-variant-numeric:tabular-nums;white-space:nowrap}
.state.err{color:var(--err);white-space:normal}
.state.ok{color:var(--ok);font-weight:600}

.right{display:flex;align-items:center;gap:6px}
.ibtn{width:36px;height:36px;border-radius:12px;display:grid;place-items:center;border:1px solid var(--line);background:var(--glass-2);color:var(--ink);padding:0}
.ibtn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ibtn.dl{background:var(--cta);color:var(--cta-ink);border-color:transparent}
.ibtn.ghost{background:transparent;border-color:transparent;color:var(--mute)}
.ibtn.ghost:hover{color:var(--ink)}

.ring{width:36px;height:36px;position:relative;display:grid;place-items:center}
.ring svg{width:36px;height:36px;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:3}
.ring .t{stroke:var(--line)}
.ring .p{stroke:var(--ink);stroke-linecap:round;transition:stroke-dashoffset .3s}
.ring .spin{animation:spin 1s linear infinite;transform-origin:50% 50%}
@keyframes spin{to{transform:rotate(360deg)}}
.ring b{position:absolute;font-size:9.5px;font-weight:700;font-variant-numeric:tabular-nums}

.item .fill{position:absolute;left:0;bottom:0;height:2px;background:linear-gradient(90deg,var(--acc),#E9A893);border-radius:2px;transition:width .3s;opacity:.85}
.item.done .fill,.item.err .fill{display:none}

.actions{display:flex;align-items:center;gap:8px;margin-top:6px}
.cta{flex:1;height:50px;border-radius:16px;border:0;background:var(--cta);color:var(--cta-ink);font-size:15px;font-weight:650;letter-spacing:-.02em;
  box-shadow:0 12px 26px -14px rgba(20,22,28,.6);transition:transform .15s,opacity .2s}
.cta:active{transform:scale(.985)}
.cta:disabled{opacity:.45;cursor:default}
.cta.alt{background:var(--glass-2);color:var(--ink);border:1px solid var(--glass-b);box-shadow:var(--glass-hi),var(--shadow);
  -webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px)}
.link{border:0;background:none;color:var(--sub);font-size:12.5px;padding:0 8px;height:50px}

/* ── supported formats ── */
.formats{margin-top:18px;padding:0 4px}
.ftitle{font-size:12px;font-weight:650;color:var(--sub);margin:0 2px 8px;letter-spacing:-.005em}
.fgrid{display:grid;grid-template-columns:1fr;gap:6px}
.frow{display:grid;grid-template-columns:58px 1fr;gap:10px;align-items:baseline;padding:9px 12px;border-radius:14px;
  background:var(--glass);border:1px solid var(--glass-b);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}
.frow b{font-size:12px;font-weight:650}
.frow span{font-size:11.5px;color:var(--sub);line-height:1.55;word-break:keep-all}
body.has .formats{display:none}

/* ── sheet (format picker / options) ── */
.sheet-bg{position:fixed;inset:0;background:rgba(10,12,20,.22);z-index:20;animation:fade .2s}
@keyframes fade{from{opacity:0}}
.sheet{position:fixed;left:50%;bottom:0;transform:translateX(-50%);width:min(560px,100%);max-height:78vh;z-index:21;
  border-radius:26px 26px 0 0;padding:6px 16px calc(18px + env(safe-area-inset-bottom));display:flex;flex-direction:column;
  background:var(--sheet);animation:up .32s cubic-bezier(.2,.9,.25,1)}
@keyframes up{from{transform:translate(-50%,100%)}}
@media (min-width:700px){
  .sheet{bottom:auto;top:50%;transform:translate(-50%,-50%);border-radius:24px;max-height:72vh;animation:zoom .25s cubic-bezier(.2,.9,.25,1)}
  @keyframes zoom{from{opacity:0;transform:translate(-50%,-48%) scale(.97)}}
  .grab{display:none}
}
.grab{width:38px;height:4px;border-radius:9px;background:var(--line);margin:6px auto 4px;background:rgba(120,126,146,.35)}
.sheet-h{display:flex;align-items:center;justify-content:space-between;padding:8px 2px 10px;font-weight:650;font-size:14px}
.x{width:32px;height:32px;border-radius:99px;border:0;background:rgba(120,126,146,.14);display:grid;place-items:center;padding:0}
.x svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.sheet-b{overflow:auto;-webkit-overflow-scrolling:touch;padding-bottom:4px}
.grp{margin-bottom:14px}
.grp-t{font-size:11.5px;color:var(--sub);font-weight:600;margin:0 2px 7px}
.chips{display:grid;grid-template-columns:repeat(auto-fill,minmax(76px,1fr));gap:7px}
.chip{height:42px;border-radius:13px;border:1px solid var(--line);background:var(--glass);font-size:13px;font-weight:680;letter-spacing:.01em;text-transform:uppercase;color:var(--ink)}
.chip:hover{background:var(--glass-2)}
.chip.on{background:var(--cta);color:var(--cta-ink);border-color:transparent}
.chip small{display:block;font-size:9.5px;font-weight:550;color:inherit;opacity:.6;text-transform:none;margin-top:-2px}

.optrow{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.optrow>span{font-size:12px;color:var(--sub);font-weight:600;margin-left:2px}
.seg{display:flex;padding:3px;border-radius:13px;background:rgba(120,126,146,.13);gap:2px}
.seg button{flex:1;height:34px;border:0;border-radius:10px;background:transparent;font-size:12.5px;font-weight:600;color:var(--sub)}
.seg button.on{background:var(--glass-2);color:var(--ink);box-shadow:0 1px 3px rgba(20,22,40,.12)}
.range{display:flex;align-items:center;gap:12px}
.range input{flex:1;accent-color:var(--ink)}
.range b{font-size:12.5px;width:38px;text-align:right;font-variant-numeric:tabular-nums}
.hint{font-size:11.5px;color:var(--mute);margin:-6px 2px 14px}

/* ── toast ── */
.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));transform:translate(-50%,20px);opacity:0;z-index:30;
  padding:10px 16px;border-radius:14px;background:var(--cta);color:var(--cta-ink);font-size:13px;font-weight:560;pointer-events:none;transition:.25s;max-width:calc(100% - 32px)}
.toast.on{opacity:1;transform:translate(-50%,0)}

/* ── footer ── */
.foot{text-align:center;padding:10px 0 calc(18px + env(safe-area-inset-bottom));font-size:11.5px}
.foot a{color:var(--mute);text-decoration:none}
.foot a:hover{color:var(--sub)}

body.dragging .drop{display:grid!important;position:fixed;inset:12px;z-index:40;min-height:0}

@media (min-width:640px){
  .fgrid{grid-template-columns:1fr 1fr}
  .drop{min-height:250px}
}