:root {
  --bg:#f5f6f8; --panel:#fff; --ink:#1b1f24; --ink2:#5b6472; --muted:#8b95a3;
  --bd:#e3e7ec; --accent:#2563eb; --accent2:#1e40af;
  --s-new:#dc2626; --s-prog:#d97706; --s-dev:#7c3aed; --s-done:#16a34a; --s-block:#6b7280;
}
* { box-sizing:border-box; }
body { margin:0; font-family:-apple-system,"Segoe UI",Roboto,"Apple SD Gothic Neo","Malgun Gothic",sans-serif;
  background:var(--bg); color:var(--ink); font-size:14px; }
.muted { color:var(--muted); }
.nowrap { white-space:nowrap; }
a { color:var(--accent); text-decoration:none; }

/* topbar */
.topbar { display:flex; align-items:center; gap:16px; padding:10px 18px; background:var(--panel);
  border-bottom:1px solid var(--bd); position:sticky; top:0; z-index:5; }
.brand { font-weight:700; font-size:16px; }
.stats { display:flex; gap:8px; flex:1; flex-wrap:wrap; }
.stat { background:var(--bg); border:1px solid var(--bd); border-radius:999px; padding:3px 10px; font-size:12px; }
.stat b { margin-left:2px; }
.stat.today { background:#eff6ff; border-color:#bfdbfe; color:var(--accent2); font-weight:600; }
.stat.s-new b{color:var(--s-new)} .stat.s-prog b{color:var(--s-prog)} .stat.s-dev b{color:var(--s-dev)}
.stat.s-done b{color:var(--s-done)} .stat.s-block b{color:var(--s-block)}
.user { display:flex; gap:10px; align-items:center; font-size:13px; color:var(--ink2); }
.linkbtn { border:1px solid var(--bd); background:var(--panel); color:var(--ink2); border-radius:7px; padding:4px 10px; font-size:12.5px; cursor:pointer; }
.linkbtn:hover { background:#f1f4f8; }

/* 담당자 관리 */
.ops-body { padding:16px 18px; overflow-y:auto; }
.ops-add { display:flex; gap:8px; }
.ops-add input { flex:1; padding:8px 10px; border:1px solid var(--bd); border-radius:7px; font-size:13px; }
.ops-add button { border:none; background:var(--accent); color:#fff; border-radius:7px; padding:8px 16px; cursor:pointer; font-weight:600; }
.ops-hint { font-size:12px; margin:8px 0 14px; }
.ops-list { list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:6px; }
.ops-list li { display:flex; align-items:center; gap:10px; padding:9px 12px; border:1px solid var(--bd); border-radius:8px; }
.ops-list .op-email { font-weight:500; font-size:13.5px; }
.ops-list .op-meta { flex:1; text-align:right; font-size:11.5px; }
.ops-list .rm { border:none; background:none; cursor:pointer; color:var(--muted); font-size:14px; }
.ops-list .rm:hover { color:var(--s-new); }
.ops-msg { font-size:12.5px; margin-top:10px; }
.ops-msg.ok { color:var(--s-done); }
.ops-msg.err { color:var(--s-new); }

/* layout */
.layout { display:flex; align-items:flex-start; }
.filters { width:210px; padding:16px; position:sticky; top:53px; }
.search input { width:100%; padding:8px 10px; border:1px solid var(--bd); border-radius:8px; margin-bottom:14px; }
.filter-group { margin-bottom:14px; display:flex; flex-wrap:wrap; gap:6px; }
.fg-title { width:100%; font-size:11px; font-weight:700; color:var(--muted); text-transform:uppercase; letter-spacing:.4px; margin-bottom:2px; }
.chip { border:1px solid var(--bd); background:var(--panel); border-radius:999px; padding:4px 10px; font-size:12px; cursor:pointer; }
.chip.active { background:var(--accent); color:#fff; border-color:var(--accent); }
.reset { border:none; background:none; color:var(--muted); cursor:pointer; font-size:12px; text-decoration:underline; }
.date-group input[type=date] { border:1px solid var(--bd); border-radius:7px; padding:4px 7px; font-size:12px; width:100%; }
.date-group .date-sep { color:var(--muted); font-size:12px; align-self:center; }
.date-group .reset { margin-top:2px; }

/* list */
.list-pane { flex:1; padding:16px 18px 60px 0; }
.inq-table { width:100%; border-collapse:collapse; background:var(--panel); border:1px solid var(--bd); border-radius:10px; overflow:hidden; }
.inq-table th { text-align:left; font-size:11px; color:var(--muted); text-transform:uppercase; letter-spacing:.4px;
  padding:10px 12px; border-bottom:1px solid var(--bd); background:#fafbfc; }
.inq-table th.sortable { cursor:pointer; user-select:none; white-space:nowrap; }
.inq-table th.sortable:hover { color:var(--ink2); background:#f1f4f8; }
.inq-table th.active-sort { color:var(--accent); }
.inq-table th .arrow { font-size:10px; }
.inq-table td { padding:11px 12px; border-bottom:1px solid var(--bd); vertical-align:top; }
.inq-table tbody tr { cursor:pointer; }
.inq-table tbody tr:hover { background:#f7f9fc; }
.subj { font-weight:500; max-width:420px; }
.thread-count { font-size:11px; color:var(--muted); margin-left:4px; }
.empty { text-align:center; color:var(--muted); padding:40px; }

.badge { display:inline-block; padding:2px 9px; border-radius:999px; font-size:11px; font-weight:600; color:#fff; white-space:nowrap; }
.inq-table td:first-child { white-space:nowrap; }
.badge.s-new{background:var(--s-new)} .badge.s-prog{background:var(--s-prog)} .badge.s-dev{background:var(--s-dev)}
.badge.s-done{background:var(--s-done)} .badge.s-block{background:var(--s-block)}

/* drawer */
.drawer-backdrop { position:fixed; inset:0; background:rgba(0,0,0,.28); z-index:9; }
.drawer { position:fixed; top:0; right:0; width:560px; max-width:94vw; height:100vh; background:var(--panel);
  z-index:10; box-shadow:-6px 0 24px rgba(0,0,0,.12); display:flex; flex-direction:column; overflow-y:auto; }
/* hidden 속성이 class display를 이기도록 명시 */
.drawer[hidden], .drawer-backdrop[hidden] { display:none; }
.drawer-head { padding:18px 20px 10px; border-bottom:1px solid var(--bd); }
.drawer-head h2 { margin:6px 0; font-size:17px; }
.drawer-head .meta { font-size:12.5px; color:var(--ink2); }
.close { position:absolute; top:12px; right:14px; border:none; background:none; font-size:18px; cursor:pointer; color:var(--muted); }
.drawer-controls { display:flex; gap:12px; flex-wrap:wrap; padding:12px 20px; border-bottom:1px solid var(--bd); background:#fafbfc; }
.drawer-controls label { font-size:12px; color:var(--ink2); display:flex; flex-direction:column; gap:3px; }
.drawer-controls select, .drawer-controls input { padding:5px 8px; border:1px solid var(--bd); border-radius:7px; font-size:13px; }

.thread { padding:16px 20px; display:flex; flex-direction:column; gap:12px; }
.msg { border:1px solid var(--bd); border-radius:10px; padding:10px 13px; }
.msg.in { background:#fff; }
.msg.out { background:#eff6ff; border-color:#bfdbfe; margin-left:28px; }
.msg-head { font-size:12px; color:var(--ink2); margin-bottom:6px; font-weight:600; display:flex; justify-content:space-between; }
.msg-body { font-size:13.5px; line-height:1.6; word-break:break-word; }
.msg-body img { max-width:100%; }
.att { margin-top:6px; font-size:12px; color:var(--muted); }

.notes-block, .reply-block { padding:14px 20px; border-top:1px solid var(--bd); }
.notes-block h3, .reply-block h3 { font-size:13px; margin:0 0 8px; }
.note { font-size:13px; margin-bottom:8px; background:#fffbeb; border:1px solid #fde68a; border-radius:8px; padding:7px 10px; }
.note-input { display:flex; gap:6px; }
.note-input input { flex:1; padding:6px 9px; border:1px solid var(--bd); border-radius:7px; }
.note-input button, .reply-actions button { border:none; background:var(--accent); color:#fff; border-radius:7px; padding:7px 14px; cursor:pointer; }
.reply-block textarea { width:100%; padding:10px; border:1px solid var(--bd); border-radius:8px; font-family:inherit; font-size:13.5px; resize:vertical; }
.reply-files { display:flex; align-items:center; gap:8px; margin-top:6px; flex-wrap:wrap; }
.file-btn { border:1px solid var(--bd); background:var(--panel); border-radius:7px; padding:5px 10px; font-size:12.5px; cursor:pointer; white-space:nowrap; }
.file-btn:hover { background:#f1f4f8; }
#fileList { font-size:12px; display:flex; gap:6px; flex-wrap:wrap; }
.file-chip { background:#eef2f7; border:1px solid var(--bd); border-radius:999px; padding:2px 6px 2px 10px; display:inline-flex; align-items:center; gap:4px; }
.file-chip .rm { border:none; background:none; cursor:pointer; color:var(--muted); font-size:12px; padding:0 2px; }
.file-chip .rm:hover { color:var(--s-new); }
.att a { color:var(--accent); text-decoration:underline; }
.reply-actions { display:flex; align-items:center; gap:8px; margin-top:8px; }
.reply-actions .spacer, .preview-actions .spacer { flex:1; }
.btn-secondary { border:1px solid var(--bd); background:var(--panel); color:var(--ink2); border-radius:7px; padding:7px 14px; cursor:pointer; }
.btn-secondary:hover { background:#f1f4f8; }

/* 회신 미리보기 모달 */
.preview-backdrop { position:fixed; inset:0; background:rgba(0,0,0,.4); z-index:20; }
.preview-modal[hidden], .preview-backdrop[hidden] { display:none; }
.preview-modal { position:fixed; top:50%; left:50%; transform:translate(-50%,-50%); width:600px; max-width:94vw; max-height:86vh;
  background:var(--panel); border-radius:12px; z-index:21; box-shadow:0 12px 40px rgba(0,0,0,.25); display:flex; flex-direction:column; overflow:hidden; }
.preview-head { display:flex; justify-content:space-between; align-items:center; padding:14px 18px; border-bottom:1px solid var(--bd); }
.preview-head h3 { margin:0; font-size:15px; }
.preview-fields { padding:12px 18px; border-bottom:1px solid var(--bd); font-size:13px; display:flex; flex-direction:column; gap:5px; background:#fafbfc; }
.preview-fields .pf-label { display:inline-block; width:76px; color:var(--muted); }
.preview-body { padding:16px 18px; overflow-y:auto; font-size:14px; line-height:1.7; flex:1; word-break:break-word; }
.preview-body img { max-width:100%; }
.preview-actions { display:flex; align-items:center; gap:8px; padding:12px 18px; border-top:1px solid var(--bd); }
.preview-actions .muted { font-size:12px; }
#previewSend { border:none; background:var(--accent); color:#fff; border-radius:7px; padding:8px 16px; cursor:pointer; font-weight:600; }
.reply-to { font-size:12px; color:var(--muted); }
.reply-actions button:disabled { opacity:.5; cursor:default; }
.reply-msg { font-size:12.5px; margin:8px 0 0; }
.reply-msg.ok, .login-msg.ok { color:var(--s-done); }
.reply-msg.err, .login-msg.err { color:var(--s-new); }

/* login */
.login-body { display:flex; align-items:center; justify-content:center; min-height:100vh; }
.login-card { background:var(--panel); border:1px solid var(--bd); border-radius:14px; padding:34px 30px; width:340px; text-align:center; box-shadow:0 8px 30px rgba(0,0,0,.06); }
.login-card h1 { font-size:19px; margin:0 0 6px; }
.login-card form { display:flex; flex-direction:column; gap:10px; margin-top:18px; }
.login-card input { padding:10px 12px; border:1px solid var(--bd); border-radius:8px; }
.login-card button { padding:10px; background:var(--accent); color:#fff; border:none; border-radius:8px; cursor:pointer; font-weight:600; }
.login-msg { font-size:12.5px; color:var(--ink2); margin-top:14px; line-height:1.5; }

@media (max-width:820px) {
  .filters { width:100%; position:static; }
  .layout { flex-direction:column; }
  .list-pane { padding:0 12px 40px; width:100%; }
}