:root{
  --bg:#FAFAF8;
  --ink:#2F2F2F;
  --grey:#9A9A9A;
  --accent:#C7694C;
  --line:#DDDAD2;
  --line-soft:#ECE9E2;
  --panel:#FFFFFF;
  --ink-soft:#5C5A55;
}

*{box-sizing:border-box}

html,body{margin:0;padding:0}

body{
  background:var(--bg);
  color:var(--ink);
  font-family:"Helvetica Neue",-apple-system,BlinkMacSystemFont,"Segoe UI","Apple SD Gothic Neo","Noto Sans KR",sans-serif;
  font-size:14px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  height:100vh;
  display:flex;
  flex-direction:column;
  overflow:hidden;
}

img{max-width:100%;height:auto;display:block}
button,input,select,textarea{font:inherit;color:inherit}
.is-hidden{display:none !important}
[hidden]{display:none !important}

/* ---------- 상단 바 ---------- */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 18px;
  background:var(--panel);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:30;
  flex-wrap:wrap;
  flex:none;
}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-mark{
  width:22px;height:22px;flex:none;border:1.5px solid var(--ink);
  background:
    linear-gradient(var(--grey),var(--grey)) 0 50%/100% 1px no-repeat,
    linear-gradient(var(--grey),var(--grey)) 50% 0/1px 100% no-repeat;
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-text strong{letter-spacing:.14em;font-size:14px}
.brand-text span{font-size:11px;color:var(--grey);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-right{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.save-state{
  font-size:11px;color:var(--grey);border:1px solid var(--line);
  padding:3px 8px;letter-spacing:.04em;white-space:nowrap;
}
.save-state.is-dirty{color:var(--accent);border-color:var(--accent)}
.save-state.is-saved{color:#4a7a52;border-color:#bcd3bf}
.auth-label{font-size:11px;color:var(--grey);max-width:40vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 버튼 ---------- */
.btn{
  border:1px solid var(--line);background:var(--panel);color:var(--ink);
  padding:7px 12px;cursor:pointer;border-radius:2px;font-size:13px;
  transition:border-color .12s,background .12s,color .12s;
}
.btn:hover{border-color:var(--ink)}
.btn:active{background:#F2F0EB}
.btn-primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-primary:hover{background:#1f1f1f}
.btn-ghost{border-color:transparent;color:var(--ink-soft)}
.btn-ghost:hover{border-color:var(--line);color:var(--ink)}
.btn-mini{padding:4px 9px;font-size:12px}
.btn-icon{padding:3px 9px;line-height:1.2;font-size:15px}
.btn-danger{color:var(--accent)}
.btn-danger:hover{border-color:var(--accent)}
.file-btn{display:inline-block}

/* ---------- 레이아웃 ---------- */
.mobile-tabs{display:none}
.layout{
  display:grid;
  grid-template-columns:minmax(300px,380px) 1fr;
  gap:0;
  flex:1 1 auto;
  min-height:0;
}
.panel{
  background:var(--panel);
  border-right:1px solid var(--line);
  overflow-y:auto;
  padding:16px 16px 60px;
  min-width:0;
}
.stage{
  display:flex;flex-direction:column;min-width:0;min-height:0;
  background:var(--bg);
}

/* ---------- 패널 블록 ---------- */
.block{border-bottom:1px solid var(--line-soft);padding-bottom:18px;margin-bottom:18px}
.block:last-child{border-bottom:0}
.block-title{
  font-size:12px;letter-spacing:.14em;text-transform:none;
  margin:0 0 10px;color:var(--ink);font-weight:600;
}
.sub-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:14px 0 8px}
.sub-head:first-child{margin-top:0}
.sub-head h2,.sub-head h3{margin:0;font-size:12px;letter-spacing:.1em;font-weight:600}
.hint{font-size:11.5px;color:var(--grey);margin:0 0 10px}

.field{display:flex;flex-direction:column;gap:4px;margin-bottom:10px;min-width:0}
.field>span{font-size:11px;color:var(--grey);letter-spacing:.06em}
.field input,.field select,.field textarea{
  width:100%;max-width:100%;
  border:1px solid var(--line);background:#fff;border-radius:2px;
  padding:7px 9px;font-size:13.5px;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);
}
.field textarea{resize:vertical}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.row-btns{display:flex;gap:8px;flex-wrap:wrap}
.row-btns .btn{flex:1 1 auto}

.preset{border:1px dashed var(--line);padding:10px;margin-top:4px}
.preset-label{font-size:11px;color:var(--grey);display:block;margin-bottom:6px}
.preset-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.preset-row input{
  flex:1 1 70px;min-width:0;width:100%;
  border:1px solid var(--line);padding:6px 8px;border-radius:2px;font-size:13px;
}
.times{color:var(--grey)}

/* ---------- 프로젝트 목록 ---------- */
.proj-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.proj-item{
  display:flex;align-items:center;gap:8px;
  border:1px solid var(--line);padding:8px 10px;border-radius:2px;background:#fff;
}
.proj-item.is-current{border-color:var(--accent);box-shadow:inset 3px 0 0 var(--accent)}
.proj-main{flex:1 1 auto;min-width:0;text-align:left;background:none;border:0;cursor:pointer;padding:0}
.proj-main b{display:block;font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.proj-main small{display:block;font-size:11px;color:var(--grey);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.empty{font-size:12px;color:var(--grey);border:1px dashed var(--line);padding:12px;text-align:center}

/* ---------- 벽 카드 ---------- */
.wall-list{display:flex;flex-direction:column;gap:10px}
.wall-card{border:1px solid var(--line);border-radius:2px;background:#fff;padding:10px}
.wall-card.is-sel{border-color:var(--accent);box-shadow:inset 3px 0 0 var(--accent)}
.wall-head{display:flex;align-items:center;gap:6px;margin-bottom:8px}
.wall-no{
  font-size:11px;color:#fff;background:var(--ink);padding:2px 6px;border-radius:2px;flex:none;
  letter-spacing:.04em;
}
.wall-card.is-sel .wall-no{background:var(--accent)}
.wall-name{
  flex:1 1 auto;min-width:0;border:1px solid transparent;background:transparent;
  padding:4px 6px;font-size:13px;font-weight:600;border-radius:2px;
}
.wall-name:hover{border-color:var(--line)}
.wall-name:focus{outline:none;border-color:var(--ink);background:#fff}
.wall-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mini-field{display:flex;flex-direction:column;gap:3px;min-width:0}
.mini-field>span{font-size:10.5px;color:var(--grey);letter-spacing:.04em}
.mini-field input,.mini-field select{
  width:100%;min-width:0;border:1px solid var(--line);border-radius:2px;padding:6px 7px;font-size:13px;background:#fff;
}
.mini-field input:focus,.mini-field select:focus{outline:none;border-color:var(--ink)}

.open-list{display:flex;flex-direction:column;gap:8px;margin-top:10px}
.open-card{border:1px solid var(--line-soft);background:#FCFBF9;padding:8px;border-radius:2px}
.open-head{display:flex;align-items:center;justify-content:space-between;gap:6px;margin-bottom:6px}
.open-tag{font-size:11px;letter-spacing:.06em;color:var(--ink-soft)}
.open-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:7px}
.wall-foot{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap}
.wall-foot .btn{flex:1 1 auto}

.issues{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-direction:column;gap:5px}
.issues li{
  font-size:11.5px;color:var(--accent);border-left:2px solid var(--accent);
  padding:3px 0 3px 8px;background:#FBF2EE;
}

/* ---------- 사진 ---------- */
.photo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:8px}
.photo-grid .empty{grid-column:1 / -1;margin:0}
.photo-cell{position:relative;border:1px solid var(--line);background:#fff;overflow:hidden}
.photo-cell img{width:100%;height:84px;object-fit:cover;cursor:pointer;display:block}
.photo-del{
  position:absolute;top:3px;right:3px;border:0;background:rgba(47,47,47,.78);color:#fff;
  width:20px;height:20px;line-height:20px;text-align:center;cursor:pointer;border-radius:2px;font-size:13px;padding:0;
}
.photo-del:hover{background:var(--accent)}

/* ---------- 도면 영역 ---------- */
.toolbar{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:9px 14px;border-bottom:1px solid var(--line);background:var(--panel);
}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:2px;overflow:hidden}
.seg-full{width:100%;margin-bottom:12px}
.seg-full .seg-btn{flex:1 1 50%}
.seg-btn{
  border:0;background:#fff;padding:6px 14px;cursor:pointer;font-size:13px;color:var(--ink-soft);
}
.seg-btn+.seg-btn{border-left:1px solid var(--line)}
.seg-btn.is-active{background:var(--ink);color:#fff}
.wall-pick{display:flex;align-items:center;gap:6px;min-width:0}
.wall-pick>span{font-size:11px;color:var(--grey);white-space:nowrap}
.wall-pick select{
  border:1px solid var(--line);border-radius:2px;padding:6px 8px;background:#fff;font-size:13px;
  max-width:170px;
}
.zoom{display:flex;align-items:center;gap:6px;margin-left:auto}
.zoom span{font-size:12px;color:var(--grey);min-width:44px;text-align:center}

.canvas-wrap{position:relative;flex:1 1 auto;min-height:0;overflow:hidden}
#dwg{display:block;width:100%;height:100%;touch-action:none;cursor:grab}
#dwg.is-panning{cursor:grabbing}
.canvas-hint{
  position:absolute;left:12px;bottom:10px;font-size:11px;color:var(--grey);
  background:rgba(250,250,248,.9);border:1px solid var(--line-soft);padding:3px 8px;
  pointer-events:none;max-width:calc(100% - 24px);
}
.statusbar{
  display:flex;gap:16px;flex-wrap:wrap;
  padding:7px 14px;border-top:1px solid var(--line);background:var(--panel);
  font-size:11.5px;color:var(--grey);letter-spacing:.03em;
}

/* ---------- 모달 ---------- */
.modal{display:none;position:fixed;inset:0;z-index:60;align-items:center;justify-content:center;padding:16px}
.modal.is-open{display:flex}
.modal-backdrop{position:absolute;inset:0;background:rgba(32,32,30,.42)}
.modal-box{
  position:relative;background:var(--panel);border:1px solid var(--line);
  width:100%;max-width:min(420px,100%);max-height:88vh;overflow:auto;border-radius:2px;
}
.modal-box-wide{max-width:min(760px,100%)}
.modal-head{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:12px 14px;border-bottom:1px solid var(--line-soft);
}
.modal-head h3{margin:0;font-size:13px;letter-spacing:.1em}
.modal-body{padding:14px}
.modal-msg{font-size:12px;color:var(--accent);margin:0 0 10px;min-height:16px}
#photoLarge{width:100%;max-height:70vh;object-fit:contain;background:#F2F0EB}

/* ---------- 토스트 ---------- */
.toasts{position:fixed;right:14px;bottom:14px;z-index:80;display:flex;flex-direction:column;gap:8px;max-width:min(320px,calc(100vw - 28px))}
.toast{
  background:var(--ink);color:#fff;padding:9px 12px;font-size:12.5px;border-radius:2px;
  box-shadow:0 6px 18px rgba(0,0,0,.16);animation:toastIn .16s ease-out;
}
.toast.is-err{background:var(--accent)}
.toast.is-ok{background:#3f6b47}
@keyframes toastIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- 반응형 ---------- */
@media (max-width:900px){
  body{height:auto;min-height:100vh;overflow:visible}
  .layout{grid-template-columns:1fr;flex:none;height:auto;min-height:0}
  .mobile-tabs{
    display:grid;grid-template-columns:1fr 1fr;
    border-bottom:1px solid var(--line);background:var(--panel);
    position:sticky;top:45px;z-index:25;
  }
  .mtab{border:0;background:transparent;padding:10px;font-size:13px;color:var(--grey);cursor:pointer}
  .mtab.is-active{color:var(--ink);box-shadow:inset 0 -2px 0 var(--accent)}
  .panel{border-right:0;height:auto;overflow:visible;padding-bottom:40px}
  .stage{height:calc(100vh - 130px);min-height:420px}
  body.show-stage .panel{display:none}
  body:not(.show-stage) .stage{display:none}
  .zoom{margin-left:0}
  .toolbar{gap:8px}
  .wall-pick select{max-width:140px}
}
@media (max-width:640px){
  .topbar{padding:8px 12px}
  .brand-text span{display:none}
  .grid-2{grid-template-columns:1fr}
  .open-grid{grid-template-columns:1fr 1fr}
  .panel{padding:14px 12px 40px}
  .statusbar{gap:10px}
}
@media (max-width:380px){
  .wall-grid{grid-template-columns:1fr}
}