/* 자료공유방 — 색 팔레트
   #F3E6D5 베이지(바탕, 가장 넓게) · #800020 버건디(헤더·메뉴·내 말풍선)
   #FFF9F2 오프화이트(카드·상대 말풍선) · #D45060 코랄(강조) */
:root{
  --beige:#F3E6D5; --beige-deep:#E7D6C0; --paper:#FFF9F2;
  --wine:#800020; --wine-deep:#65001A; --wine-soft:#9B2740;
  --coral:#D45060; --coral-soft:#E79CA5;
  --ink:#3A1016; --ink-soft:#7A5A5E; --line:#E0CEB6;
  --on-wine:#F3E6D5; --danger:#B3122E; --ok:#2F7D5B;
  color-scheme:light;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR",sans-serif;color:var(--ink);background:var(--beige);-webkit-text-size-adjust:100%}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font:inherit}
:focus-visible{outline:2px solid var(--coral);outline-offset:2px}
.hidden{display:none!important}

/* 로그인 */
.login{min-height:100%;display:flex;align-items:center;justify-content:center;background:var(--beige);padding:24px}
.login-card{width:100%;max-width:360px;text-align:center}
.login-logo{width:76px;height:76px;border-radius:24px;background:var(--wine);color:var(--beige);display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.login-logo svg{width:44px;height:44px}
.login h1{font-size:21px;margin-bottom:22px;color:var(--wine);letter-spacing:-.02em}
.login input{width:100%;padding:14px;border:1px solid var(--line);border-radius:10px;margin-bottom:8px;background:var(--paper);color:var(--ink)}
.login input::placeholder{color:#a8938c}
.login .btn{width:100%;padding:14px;margin-top:6px}
.login .hint{margin-top:18px;font-size:12px;color:var(--ink-soft);line-height:1.8;background:var(--paper);border-radius:12px;padding:12px}
.login .hint b{color:var(--wine)}
.err{color:var(--danger);font-size:13px;min-height:18px;margin:4px 0}

/* 버튼 */
.btn{background:var(--wine);color:var(--beige);border-radius:10px;padding:10px 15px;font-weight:600;font-size:14px}
.btn:hover{background:var(--wine-deep)}
.btn.yellow{background:var(--wine);color:var(--beige)}
.btn.ghost{background:var(--paper);color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--beige)}
.btn.danger{background:var(--coral);color:#fff}
.btn.danger:hover{background:var(--danger)}
.btn.sm{padding:6px 11px;font-size:13px}
.btn:disabled{opacity:.45;cursor:default}

/* 레이아웃 */
.shell{display:flex;height:100dvh;height:100vh;background:var(--beige)}
@supports(height:100dvh){.shell{height:100dvh}}
.rail{width:66px;background:var(--wine);display:flex;flex-direction:column;align-items:center;padding-top:14px;gap:6px;flex-shrink:0}
.rail button{width:50px;height:50px;border-radius:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:10px;color:rgba(243,230,213,.68);gap:2px}
.rail button svg{width:22px;height:22px}
.rail button.on{color:var(--wine);background:var(--beige)}
.listpane{width:322px;background:var(--beige);display:flex;flex-direction:column;flex-shrink:0;border-right:1px solid var(--line)}
.main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--beige)}
.pane-head{height:58px;display:flex;align-items:center;padding:0 16px;gap:8px;flex-shrink:0;background:var(--wine);color:var(--beige);border-bottom:0}
.pane-head h2{font-size:18px;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:-.02em}
.pane-head .btn.ghost{background:transparent;color:var(--beige);border-color:rgba(243,230,213,.5)}
.pane-head .back{color:var(--beige)}
.pane-body{flex:1;overflow:auto}
.bottomnav{display:none}
.empty{color:var(--ink-soft);text-align:center;padding:60px 20px;font-size:14px;line-height:1.8}

/* 채팅방 목록 */
.grouphead{display:flex;align-items:center;gap:8px;padding:14px 16px 7px;font-size:12px;font-weight:700;color:var(--coral);letter-spacing:.06em;position:sticky;top:0;background:var(--beige);z-index:1}
.grouphead::after{content:"";flex:1;height:1px;background:var(--line)}
.grouphead span{background:var(--coral);color:#fff;border-radius:9px;padding:1px 7px;font-size:11px;order:3;font-weight:700}
.room-item{display:flex;align-items:center;gap:12px;padding:12px 16px;cursor:pointer}
.room-item:hover{background:var(--beige-deep)}
.room-item.on{background:var(--paper);box-shadow:inset 3px 0 0 var(--wine)}
.room-ico{overflow:hidden;width:48px;height:48px;border-radius:17px;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;font-size:18px;flex-shrink:0}
.room-ico img{width:100%;height:100%;object-fit:cover;display:block}
.room-ico.small{width:36px;height:36px;border-radius:12px;font-size:14px}
.headico{width:34px;height:34px;border-radius:11px;overflow:hidden;flex-shrink:0;background:var(--coral)}
.headico img{width:100%;height:100%;object-fit:cover;display:block}
.room-txt{flex:1;min-width:0}
.room-name{font-weight:600;font-size:15px;display:flex;gap:6px;align-items:center}
.room-name small{color:var(--ink-soft);font-weight:400;font-size:13px}
.room-last{color:var(--ink-soft);font-size:13px;margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.room-side{display:flex;flex-direction:column;align-items:flex-end;gap:5px;flex-shrink:0}
.room-time{color:var(--ink-soft);font-size:11px;white-space:nowrap}
.unread{background:var(--coral);color:#fff;border-radius:11px;min-width:22px;height:22px;padding:0 7px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
.grouphead span.hot{background:var(--wine);color:var(--beige)}
.rail button,.bottomnav button{position:relative}
.navdot{position:absolute;top:4px;right:9px;background:var(--coral);color:#fff;border-radius:9px;min-width:18px;height:18px;padding:0 5px;font-size:11px;font-style:normal;font-weight:700;display:flex;align-items:center;justify-content:center}
.bottomnav .navdot{top:2px;right:calc(50% - 26px)}

/* 채팅방 */
.chat{flex:1;display:flex;flex-direction:column;min-height:0;background:var(--beige);position:relative}
.back{display:none;font-size:24px;padding:4px 8px 4px 0;line-height:1}
.msgs{flex:1;overflow-y:auto;padding:8px 12px 16px}
.day{text-align:center;margin:16px 0}
.day span{background:var(--beige-deep);color:var(--ink-soft);font-size:12px;padding:5px 12px;border-radius:12px}
.row{display:flex;gap:8px;margin-top:10px;align-items:flex-start}
.row.cont{margin-top:4px}
.row.mine{flex-direction:row-reverse}
.ava{width:40px;height:40px;border-radius:14px;background:var(--coral);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;overflow:hidden}
.ava img{width:100%;height:100%;object-fit:cover;display:block}
.row.cont .ava{visibility:hidden;height:0}
.row.mine .ava{display:none}
.col{display:flex;flex-direction:column;max-width:72%;min-width:0}
.row.mine .col{align-items:flex-end}
.who{font-size:13px;color:var(--wine);margin:0 0 4px 2px}
.row.cont .who,.row.mine .who{display:none}
.line{display:flex;align-items:flex-end;gap:6px}
.row.mine .line{flex-direction:row-reverse}
.time{font-size:11px;color:var(--ink-soft);white-space:nowrap}
.bub-txt{background:var(--paper);color:var(--ink);border-radius:4px 16px 16px 16px;padding:9px 12px;font-size:14.5px;line-height:1.5;white-space:pre-wrap;word-break:break-word;max-width:100%;border:1px solid var(--line)}
.row.mine .bub-txt{background:var(--wine);color:var(--beige);border-radius:16px 4px 16px 16px;border-color:var(--wine)}
.bub-img{border-radius:14px;overflow:hidden;cursor:pointer;background:var(--paper);line-height:0;max-width:240px;border:1px solid var(--line)}
.bub-img img{width:100%;max-height:320px;object-fit:cover;display:block}
.bub-file{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:12px;display:flex;gap:10px;align-items:center;cursor:pointer;min-width:200px;max-width:260px;color:var(--ink)}
.row.mine .bub-file{background:var(--wine);color:var(--beige);border-color:var(--wine)}
.row.mine .bub-file .fsize{color:rgba(243,230,213,.75)}
.fico{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:12px;flex-shrink:0;background:var(--wine-soft)}
.fico.pdf{background:var(--coral)}
.fico.excel{background:var(--ok)}
.row.mine .fico{background:rgba(243,230,213,.25)}
.fname{font-size:14px;font-weight:600;word-break:break-all;line-height:1.35}
.fsize{font-size:12px;color:var(--ink-soft);margin-top:2px}
.pick{width:22px;height:22px;border-radius:50%;border:2px solid var(--wine);background:var(--paper);align-self:center;flex-shrink:0;display:none}
.selecting .pick{display:block}
.row.sel .pick{background:var(--coral);border-color:var(--wine)}
.row.sel .bub-img,.row.sel .bub-file,.row.sel .bub-txt{outline:3px solid var(--coral)}
.prog{height:4px;background:rgba(243,230,213,.35);border-radius:2px;margin-top:6px;overflow:hidden;width:160px}
.prog i{display:block;height:100%;background:var(--coral);width:0;transition:width .25s}
.inputbar{background:var(--paper);border-top:1px solid var(--line);display:flex;align-items:flex-end;gap:6px;padding:8px 10px;padding-bottom:calc(8px + env(safe-area-inset-bottom,0px));flex-shrink:0}
.inputbar .ib{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--wine);flex-shrink:0}
.inputbar .ib:hover{background:var(--beige)}
.inputbar .ib svg{width:24px;height:24px}
.inputbar textarea{flex:1;min-width:0;border:1px solid var(--line);background:var(--beige);border-radius:18px;padding:10px 14px;font-size:15px;resize:none;line-height:1.4;max-height:120px;outline:none;color:var(--ink)}
.inputbar .send{background:var(--wine);color:var(--beige);font-weight:700;border-radius:18px;padding:0 15px;height:40px;font-size:14px;flex-shrink:0}
.inputbar .send:disabled{background:var(--beige-deep);color:#a8938c}
.enterhint{font-size:11px;color:var(--ink-soft);padding:0 12px 6px;background:var(--paper)}
.selbar{background:var(--wine);color:var(--beige);display:flex;align-items:center;gap:10px;padding:10px 14px;padding-bottom:calc(10px + env(safe-area-inset-bottom,0px))}
.selbar span{flex:1}
.drop{position:absolute;inset:0;background:rgba(128,0,32,.86);color:var(--beige);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;z-index:5;border:4px dashed var(--beige);pointer-events:none}

/* 관리자 공통 */
.page{padding:18px;max-width:980px}
.toolbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:14px}
.toolbar .grow{flex:1}
.search{padding:9px 12px;border:1px solid var(--line);border-radius:9px;min-width:0;width:220px;background:var(--paper);color:var(--ink)}
table.t{width:100%;border-collapse:collapse;font-size:14px;background:var(--paper)}
.t th,.t td{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
.t th{font-size:12px;color:var(--wine);font-weight:700;background:var(--beige);letter-spacing:.02em}
.t td.act{white-space:nowrap;text-align:right}
.t tr.bad td{background:#fbe8ea}
.t tr.grouprow td{background:var(--wine);color:var(--beige);font-weight:700;font-size:13px;letter-spacing:.03em}
.t tr.grouprow .stat{color:var(--coral-soft)}
.chip{display:inline-block;background:var(--beige);border:1px solid var(--line);border-radius:12px;padding:2px 9px;font-size:12px;margin:2px 2px 2px 0}
.chip.admin{background:var(--wine);color:var(--beige);border-color:var(--wine)}
.tag-err{color:var(--danger);font-size:12px}
.tag-ok{color:var(--ok);font-size:12px;font-weight:600}
.card{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:18px;margin-bottom:14px;color:var(--ink)}
.card h3{font-size:16px;margin-bottom:6px;letter-spacing:-.01em;color:var(--wine)}
.card p{color:var(--ink-soft);font-size:14px;line-height:1.7}
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:var(--paper)}
.thumb{width:44px;height:44px;border-radius:8px;object-fit:cover;display:block}
.stat{font-size:13px;color:var(--ink-soft)}
.bigava{width:76px;height:76px;border-radius:26px;background:var(--coral);color:#fff;display:flex;align-items:center;justify-content:center;font-size:30px;font-weight:700;overflow:hidden;flex-shrink:0}
.bigava img{width:100%;height:100%;object-fit:cover;display:block}
.mecard{display:flex;gap:16px;align-items:center}
.switch{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink);cursor:pointer;margin-top:10px}
.switch input{width:18px;height:18px;accent-color:var(--wine)}

/* 모달 */
.mask{position:fixed;inset:0;background:rgba(58,16,22,.55);display:flex;align-items:center;justify-content:center;z-index:50;padding:16px}
.modal{background:var(--paper);border-radius:18px;width:100%;max-width:440px;max-height:90vh;overflow:auto;padding:20px}
.modal h3{font-size:18px;margin-bottom:12px;color:var(--wine)}
.modal .msg{font-size:14px;line-height:1.8;color:var(--ink);margin-bottom:12px;white-space:pre-line}
.modal label{display:block;font-size:13px;color:var(--ink-soft);margin:12px 0 5px}
.modal input[type=text],.modal input[type=password]{width:100%;padding:11px;border:1px solid var(--line);border-radius:9px;background:var(--beige);color:var(--ink)}
.modal .checks{display:flex;flex-wrap:wrap;gap:6px}
.modal .checks label{margin:0;display:flex;gap:6px;align-items:center;border:1px solid var(--line);border-radius:9px;padding:7px 10px;color:var(--ink);font-size:14px;cursor:pointer}
.modal .checks input{accent-color:var(--wine)}
.modal .btns{display:flex;gap:8px;justify-content:flex-end;margin-top:18px}
.lightbox{position:fixed;inset:0;background:rgba(58,16,22,.96);z-index:60;display:flex;flex-direction:column}
.lightbox .lb-top{display:flex;align-items:center;gap:10px;padding:12px 14px;color:var(--beige)}
.lightbox .lb-top span{flex:1;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lightbox .lb-img{flex:1;display:flex;align-items:center;justify-content:center;min-height:0;padding:8px}
.lightbox img{max-width:100%;max-height:100%;object-fit:contain}
#toast{position:fixed;left:50%;bottom:90px;transform:translateX(-50%);background:var(--wine);color:var(--beige);padding:11px 18px;border-radius:22px;font-size:14px;z-index:70;opacity:0;transition:opacity .2s;pointer-events:none;max-width:90vw;text-align:center}
#toast.show{opacity:1}
.testbadge{font-size:11px;background:var(--coral);color:#fff;border-radius:7px;padding:3px 7px;font-weight:700}

/* 모바일 */
@media (max-width:860px){
  .rail{display:none}
  .shell{flex-direction:column}
  .listpane{width:100%;flex:1;min-height:0;border-right:0}
  .main{flex:1;min-height:0}
  .shell.show-main .listpane{display:none}
  .shell:not(.show-main) .main{display:none}
  .shell.in-chat .bottomnav{display:none}
  .back{display:block}
  .bottomnav{display:flex;background:var(--wine);padding-bottom:env(safe-area-inset-bottom,0px);flex-shrink:0}
  .bottomnav button{flex:1;padding:9px 0 7px;display:flex;flex-direction:column;align-items:center;font-size:11px;color:rgba(243,230,213,.6);gap:2px}
  .bottomnav button svg{width:24px;height:24px}
  .bottomnav button.on{color:var(--beige)}
  .page{padding:14px}
  .search{width:100%}
  .t .hide-m{display:none}
  .col{max-width:78%}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}