:root {
  --burgundy: #8A1C2E;
  --burgundy-dark: #6E1424;
  --burgundy-soft: #F7E9EC;
  --gold: #C9A25E;
  --gold-soft: #F6EFE0;
  --cream: #FAF7F2;
  --paper: #FFFFFF;
  --ink: #1F1A1C;
  --muted: #7A6F73;
  --line: #E8E1DA;
  --line-strong: #D6CCC3;
  --green: #2E7D4F;
  --amber: #B7791F;
  --red: #B42318;
  --radius: 12px;
  --font: "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: "Playfair Display", Georgia, serif;
  --shadow: 0 1px 2px rgba(31, 26, 28, .06), 0 8px 24px rgba(31, 26, 28, .06);
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { font-family: var(--font); color: var(--ink); background: var(--cream); font-size: 14px; line-height: 1.5; display: flex; flex-direction: column; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--burgundy); }
.muted { color: var(--muted); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--gold-soft); padding: 1px 5px; border-radius: 4px; font-size: 12.5px; }
[hidden] { display: none !important; }
.inline { display: inline; }

/* ---------- buttons ---------- */
.btn { border: 1px solid var(--line-strong); background: var(--paper); border-radius: 8px; padding: 7px 13px; cursor: pointer; transition: background .15s, border-color .15s, color .15s; white-space: nowrap; }
.btn:hover { background: var(--cream); border-color: var(--gold); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--burgundy); border-color: var(--burgundy); color: #fff; font-weight: 500; }
.btn.primary:hover:not(:disabled) { background: var(--burgundy-dark); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn.ghost:hover { color: var(--ink); background: rgba(0,0,0,.04); border-color: transparent; }
.btn.wide { width: 100%; padding: 10px; }
.btn.small { padding: 3px 9px; font-size: 12.5px; border-radius: 6px; }

/* ---------- topbar ---------- */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 20px; background: var(--paper); border-bottom: 1px solid var(--line); flex: none; }
.topbar-brand, .login-brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { width: 38px; height: 38px; border-radius: 10px; background: var(--burgundy); color: var(--gold); font-family: var(--serif); font-style: italic; font-size: 22px; display: grid; place-items: center; }
.brand-name { font-weight: 700; font-size: 15px; letter-spacing: -.01em; }
.brand-sub { font-size: 11.5px; color: var(--muted); letter-spacing: .04em; }
.topbar-center { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.pill { font-size: 12.5px; color: var(--muted); background: var(--cream); border: 1px solid var(--line); padding: 4px 10px; border-radius: 999px; }
.pill b { color: var(--ink); font-weight: 600; margin-left: 2px; }
.pill.live i { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--amber); margin-right: 6px; vertical-align: middle; }
.pill.live.on i { background: var(--green); }
.pill.live.off i { background: var(--red); }
.topbar-actions { display: flex; align-items: center; gap: 6px; }
.user-chip { white-space: nowrap; font-size: 13px; padding: 4px 10px; background: var(--gold-soft); border-radius: 999px; color: var(--burgundy-dark); font-weight: 500; }

.banner { padding: 8px 20px; font-size: 13px; border-bottom: 1px solid var(--line); flex: none; }
.banner.warn { background: #FFF6E5; color: #7A4B00; }

/* ---------- layout ---------- */
.layout { flex: 1; display: grid; grid-template-columns: 330px 1fr; min-height: 0; }
.sidebar { background: var(--paper); border-right: 1px solid var(--line); display: flex; flex-direction: column; min-height: 0; }
.sidebar-head { padding: 12px 12px 8px; border-bottom: 1px solid var(--line); display: flex; flex-direction: column; gap: 8px; }
.sidebar-head input[type=search] { width: 100%; padding: 8px 11px; border: 1px solid var(--line-strong); border-radius: 8px; background: var(--cream); }
.tabs { display: flex; gap: 2px; background: var(--cream); padding: 3px; border-radius: 8px; }
.tabs button { flex: 1; border: 0; background: transparent; padding: 5px; border-radius: 6px; cursor: pointer; color: var(--muted); }
.tabs button.active { background: var(--paper); color: var(--ink); font-weight: 500; box-shadow: 0 1px 2px rgba(0,0,0,.06); }
.chips { display: flex; flex-wrap: wrap; gap: 5px; }
.chip { font-size: 12px; border: 1px solid var(--line-strong); background: var(--paper); border-radius: 999px; padding: 2px 9px; cursor: pointer; display: inline-flex; align-items: center; gap: 5px; }
.chip.active { border-color: var(--burgundy); background: var(--burgundy-soft); color: var(--burgundy-dark); }
.chip .dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }

.conv-list { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; }
.conv-item { display: grid; grid-template-columns: 40px 1fr auto; gap: 10px; padding: 11px 12px; border-bottom: 1px solid var(--line); cursor: pointer; align-items: start; }
.conv-item:hover { background: var(--cream); }
.conv-item.active { background: var(--burgundy-soft); }
.conv-item.unread .conv-name { font-weight: 700; }
.conv-name { display: flex; align-items: center; gap: 6px; font-size: 13.5px; overflow: hidden; }
.conv-name span.name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conv-preview { font-size: 12.5px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-top: 2px; }
.conv-meta { text-align: right; font-size: 11px; color: var(--muted); display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.badge-unread { background: var(--burgundy); color: #fff; min-width: 18px; height: 18px; border-radius: 9px; font-size: 11px; display: inline-grid; place-items: center; padding: 0 5px; font-weight: 600; }
.lang-tag { font-size: 10.5px; color: var(--burgundy-dark); background: var(--gold-soft); padding: 1px 6px; border-radius: 4px; }
.sidebar-empty { padding: 30px; text-align: center; color: var(--muted); }

.avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--gold-soft); color: var(--burgundy-dark); display: grid; place-items: center; font-weight: 600; overflow: hidden; flex: none; position: relative; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar .ch { position: absolute; right: -1px; bottom: -1px; width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--paper); }
.channel-badge { font-size: 11px; padding: 1px 7px; border-radius: 4px; color: #fff; font-weight: 500; white-space: nowrap; }
.channel-badge.light { color: #3b2f00; }

/* ---------- thread ---------- */
.thread { display: flex; flex-direction: column; min-height: 0; min-width: 0; }
.thread-placeholder { margin: auto; text-align: center; max-width: 440px; padding: 40px; }
.placeholder-art { font-size: 42px; margin-bottom: 8px; }
.thread-body { display: flex; flex-direction: column; min-height: 0; height: 100%; }
.thread-head { display: flex; align-items: center; gap: 12px; padding: 10px 18px; background: var(--paper); border-bottom: 1px solid var(--line); flex: none; flex-wrap: wrap; }
.thread-head .back { display: none; }
.head-main { min-width: 0; flex: 1; }
.head-name { font-weight: 600; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.head-sub { font-size: 12px; color: var(--muted); }
.head-controls { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.lang-select { font-size: 12.5px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.lang-select select { padding: 5px 8px; border: 1px solid var(--line-strong); border-radius: 7px; background: var(--paper); color: var(--ink); }
.window-chip { font-size: 12px; padding: 4px 10px; border-radius: 999px; border: 1px solid; white-space: nowrap; }
.window-chip.ok { color: var(--green); border-color: #BFE3CD; background: #EEF8F1; }
.window-chip.warn { color: var(--amber); border-color: #F1D9A8; background: #FFF6E5; }
.window-chip.bad { color: var(--red); border-color: #F3C4BF; background: #FDEEEC; }
.window-chip.off { color: var(--muted); border-color: var(--line-strong); background: var(--cream); }

.messages { flex: 1; overflow-y: auto; padding: 18px 20px; display: flex; flex-direction: column; gap: 10px; }
.day-sep { align-self: center; font-size: 11.5px; color: var(--muted); background: var(--paper); border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; margin: 6px 0; }
.msg { max-width: min(680px, 82%); display: flex; flex-direction: column; gap: 4px; }
.msg.in { align-self: flex-start; }
.msg.out { align-self: flex-end; align-items: flex-end; }
.msg.system { align-self: center; max-width: 90%; }
.bubble { padding: 10px 14px; border-radius: 14px; background: var(--paper); border: 1px solid var(--line); box-shadow: 0 1px 1px rgba(0,0,0,.03); white-space: pre-wrap; word-break: break-word; }
.msg.in .bubble { border-bottom-left-radius: 4px; }
.msg.out .bubble { background: var(--burgundy-soft); border-color: #EBD3D8; border-bottom-right-radius: 4px; }
.msg.system .bubble { background: transparent; border: 0; box-shadow: none; color: var(--muted); font-size: 12.5px; text-align: center; padding: 2px 10px; }
.bubble .primary { font-size: 14.5px; }
.bubble .secondary { margin-top: 6px; padding-top: 6px; border-top: 1px dashed var(--line-strong); font-size: 12.5px; color: var(--muted); }
.bubble .secondary .tag, .bubble .primary .tag { display: inline-block; font-size: 10.5px; color: var(--burgundy-dark); background: var(--gold-soft); border-radius: 4px; padding: 0 5px; margin-right: 5px; vertical-align: 1px; }
.bubble .pending { color: var(--amber); font-size: 12.5px; }
.bubble .failed { color: var(--red); font-size: 12.5px; }
.msg-meta { font-size: 11px; color: var(--muted); padding: 0 4px; display: flex; gap: 6px; }
.msg-meta .status.failed { color: var(--red); }
.msg-meta .status.read { color: var(--green); }
.attachments { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.attachments img { max-width: 260px; max-height: 260px; border-radius: 8px; border: 1px solid var(--line); cursor: zoom-in; display: block; }
.attachments a.file { font-size: 12.5px; border: 1px solid var(--line-strong); border-radius: 8px; padding: 5px 9px; background: var(--paper); text-decoration: none; }

/* ---------- composer ---------- */
.composer { border-top: 1px solid var(--line); background: var(--paper); padding: 12px 18px 14px; flex: none; display: flex; flex-direction: column; gap: 8px; }
.composer textarea { width: 100%; resize: vertical; padding: 10px 12px; border: 1px solid var(--line-strong); border-radius: 10px; background: var(--paper); min-height: 64px; }
.composer textarea:focus { outline: 2px solid var(--gold); outline-offset: 0; border-color: var(--gold); }
.preview { background: var(--gold-soft); border: 1px solid #EBDDBF; border-radius: 10px; padding: 8px 10px; }
.preview-label { font-size: 12px; color: #6F5A2A; margin-bottom: 5px; }
.preview textarea { background: #fff; }
.composer-actions { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; }
.composer-actions .left, .composer-actions .right { display: flex; gap: 6px; align-items: center; }
.compose-status { font-size: 12.5px; color: var(--muted); }
.window-warning { font-size: 13px; background: #FDEEEC; color: var(--red); border: 1px solid #F3C4BF; border-radius: 8px; padding: 8px 12px; display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.window-warning.info { background: var(--cream); color: var(--muted); border-color: var(--line-strong); }

/* ---------- dialogs ---------- */
.dialog { border: 0; border-radius: 14px; padding: 0; width: min(760px, 94vw); max-height: 88vh; box-shadow: var(--shadow); }
.dialog::backdrop { background: rgba(31, 26, 28, .35); }
.dialog-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.dialog-head h2 { margin: 0; font-size: 16px; }
.dialog-body { padding: 16px 18px; overflow-y: auto; max-height: calc(88vh - 60px); display: flex; flex-direction: column; gap: 12px; }
.dialog-body label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.dialog-body input, .dialog-body textarea { padding: 8px 10px; border: 1px solid var(--line-strong); border-radius: 8px; color: var(--ink); }
.dialog-actions { display: flex; justify-content: flex-end; }
.channel-card { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; display: grid; grid-template-columns: 1fr auto; gap: 6px 12px; }
.channel-card h3 { margin: 0; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.channel-card .state { font-size: 12px; padding: 2px 9px; border-radius: 999px; align-self: start; }
.channel-card .state.on { background: #EEF8F1; color: var(--green); }
.channel-card .state.off { background: var(--cream); color: var(--muted); }
.channel-card ul { margin: 4px 0 0; padding-left: 18px; font-size: 12.5px; color: var(--muted); grid-column: 1 / -1; }
.channel-card .missing { grid-column: 1 / -1; font-size: 12.5px; color: var(--amber); }

/* ---------- toast ---------- */
.toast { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 999px; font-size: 13px; box-shadow: var(--shadow); z-index: 50; max-width: 90vw; }
.toast.error { background: var(--red); }

/* ---------- login ---------- */
.login-body { align-items: center; justify-content: center; }
.login-card { background: var(--paper); border: 1px solid var(--line); border-radius: 16px; padding: 32px; width: min(400px, 92vw); box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 20px; }
.login-form { display: flex; flex-direction: column; gap: 12px; }
.login-form label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; color: var(--muted); }
.login-form input { padding: 10px 12px; border: 1px solid var(--line-strong); border-radius: 8px; color: var(--ink); }
.login-form .error { color: var(--red); font-size: 13px; margin: 0; }
.login-hint { font-size: 12.5px; color: var(--muted); margin: 0; text-align: center; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .layout.show-thread .sidebar { display: none; }
  .layout:not(.show-thread) .thread { display: none; }
  .thread-head .back { display: inline-block; }
  .topbar { flex-wrap: wrap; }
  .topbar-center { order: 3; width: 100%; }
  .brand-sub { display: none; }
  .topbar { padding: 8px 12px; gap: 8px; }
  .msg { max-width: 92%; }
}