:root{--bg:#f6f7f9;--card:#fff;--fg:#1d2330;--mute:#6b7280;--line:#e5e7eb;--accent:#2563eb;--hover:#f1f5ff;--danger:#dc2626;--safe-b:env(safe-area-inset-bottom,0px)}
@media (prefers-color-scheme:dark){:root{--bg:#111318;--card:#1a1d24;--fg:#e6e8ec;--mute:#9aa1ad;--line:#2a2e37;--accent:#5b8cff;--hover:#20252f;--danger:#f87171}}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:14px/1.5 -apple-system,"Segoe UI","Malgun Gothic","Apple SD Gothic Neo",sans-serif}
a{color:inherit;text-decoration:none}
input,select,button{font:inherit;color:inherit}
input,select{width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--card)}
input:focus,select:focus{outline:2px solid var(--accent);outline-offset:-1px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:4px;padding:7px 12px;border:1px solid var(--line);border-radius:8px;background:var(--card);cursor:pointer;white-space:nowrap}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.ghost{background:none;border-color:transparent;color:var(--mute)}
.btn .i{display:none}
[hidden]{display:none!important}

/* ---------- 로그인 ---------- */
.auth{min-height:100vh;min-height:100dvh;display:grid;place-items:center;padding:16px}
.card{width:100%;max-width:360px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:28px}
.card h1{margin:0;font-size:22px}.sub{color:var(--mute);margin:4px 0 18px}
.card label{display:block;margin-bottom:12px;color:var(--mute);font-size:13px}
.card label input{margin-top:4px}
.card .btn{width:100%;padding:11px;margin-top:6px}
.err{background:color-mix(in srgb,var(--danger) 12%,transparent);color:var(--danger);padding:8px 10px;border-radius:8px;margin-bottom:12px;font-size:13px}

/* ---------- 목록 ---------- */
.top{position:sticky;top:0;z-index:5;display:flex;gap:12px;align-items:center;padding:10px 16px;padding-top:max(10px,env(safe-area-inset-top));background:var(--card);border-bottom:1px solid var(--line)}
.top h1{font-size:17px;margin:0;white-space:nowrap}
.top #q{max-width:320px}
.top nav{margin-left:auto;display:flex;gap:6px;align-items:center}
.user{color:var(--mute);margin-right:4px}
main{max-width:900px;margin:0 auto;padding:16px}
.toolbar{display:flex;gap:6px;align-items:center;margin-bottom:10px;flex-wrap:wrap}.spacer{flex:1}
#tree{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:6px}
#tree ul{list-style:none;margin:0;padding:0}
#tree ul ul{padding-left:20px;border-left:1px dashed var(--line);margin-left:13px}
.row{display:flex;align-items:center;gap:6px;padding:4px 6px;border-radius:6px;min-height:34px}
.row:hover{background:var(--hover)}
.tog{width:20px;flex:none;border:0;background:none;cursor:pointer;color:var(--mute);padding:0;align-self:stretch}
.row .name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;cursor:pointer}
.row.folder .name{font-weight:600}
.row.link .name:hover{color:var(--accent);text-decoration:underline}
.row .main{flex:1;min-width:0;display:flex;gap:8px;align-items:center}
.cnt{color:var(--mute);font-size:12px}
.path{color:var(--mute);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.acts{display:flex;gap:2px;opacity:0;transition:opacity .15s}
.row:hover .acts,.row:focus-within .acts{opacity:1}
.ic{border:0;background:none;cursor:pointer;padding:3px 6px;border-radius:6px;font-size:13px}
.ic:hover{background:var(--line)}
.more,.fab{display:none}
.empty{color:var(--mute);text-align:center;padding:40px 16px}

/* ---------- 다이얼로그 / 바텀시트 ---------- */
dialog{border:1px solid var(--line);border-radius:14px;padding:0;width:min(420px,calc(100% - 32px));background:var(--card);color:var(--fg)}
dialog::backdrop{background:rgba(0,0,0,.4)}
#frm{padding:22px}
dialog h2{margin:0 0 14px;font-size:17px}
dialog label{display:block;margin-bottom:12px;font-size:13px;color:var(--mute)}
dialog label input,dialog label select{margin-top:4px}
dialog label.chk{display:flex;gap:8px;align-items:center;color:var(--fg);padding:4px 0}
dialog label.chk input{width:18px;height:18px;margin:0}
.btns{display:flex;justify-content:flex-end;gap:6px;margin-top:6px}

.sheet{padding:8px 0}
.sheet-title{padding:8px 20px 10px;color:var(--mute);font-size:13px;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border-bottom:1px solid var(--line)}
.sheet-btn{display:block;width:100%;padding:14px 20px;border:0;background:none;text-align:left;font-size:16px;cursor:pointer}
.sheet-btn:active{background:var(--hover)}
.sheet-btn.danger{color:var(--danger)}
.sheet-btn.cancel{text-align:center;color:var(--mute);border-top:1px solid var(--line);margin-top:4px}

/* ---------- 터치 기기: 호버 대신 ⋯ 메뉴 ---------- */
@media (hover:none),(max-width:640px){
  .acts{display:none}
  .more{display:flex;align-items:center;justify-content:center;flex:none;width:44px;height:44px;margin-right:-6px;border:0;background:none;color:var(--mute);font-size:20px;border-radius:10px;cursor:pointer}
  .more:active{background:var(--line)}
  .row{min-height:48px;padding:2px 6px}
  .row:hover{background:none}
  .row:active{background:var(--hover)}
  .tog{width:32px;font-size:16px}
}

/* ---------- 모바일 레이아웃 ---------- */
@media (max-width:640px){
  body{font-size:15px}
  input,select{font-size:16px;padding:11px 12px} /* iOS 확대 방지 */
  .top{flex-wrap:wrap;gap:8px;padding:8px 12px;padding-top:max(8px,env(safe-area-inset-top))}
  .top h1{font-size:18px}
  .top #q{order:3;max-width:none;flex-basis:100%}
  .user{display:none}
  .btn .lb{display:none}
  .btn .i{display:inline;font-size:13px}
  .top nav .btn{height:38px;padding:0 12px;border-radius:10px}

  main{padding:10px 8px calc(96px + var(--safe-b))}
  .toolbar{margin-bottom:6px}
  .toolbar .pc{display:none}
  .toolbar .btn{padding:8px 10px;font-size:13px}
  #tree{border-radius:10px;padding:4px}
  #tree ul ul{padding-left:10px;margin-left:15px}
  .row.folder .name{font-size:15px}
  .row .main{flex-direction:column;align-items:flex-start;gap:0}
  .row .main .name{width:100%}

  .fab{display:flex;align-items:center;justify-content:center;position:fixed;right:18px;bottom:calc(18px + var(--safe-b));z-index:10;width:56px;height:56px;border:0;border-radius:50%;background:var(--accent);color:#fff;font-size:28px;box-shadow:0 6px 18px rgba(0,0,0,.25);cursor:pointer}
  .fab:active{transform:scale(.95)}

  /* 다이얼로그 → 하단 시트 */
  dialog{width:100%;max-width:100%;margin:auto 0 0;border-radius:16px 16px 0 0;border-width:1px 0 0;padding-bottom:var(--safe-b);max-height:90dvh;overflow:auto}
  dialog[open]{animation:up .2s ease-out}
  #frm{padding:20px 16px}
  .btns .btn{flex:1;padding:12px}
  .card{padding:24px 20px}
}
@keyframes up{from{transform:translateY(100%)}to{transform:none}}