styles.css

/* ══ nullobj: monochrome, flat, hairlines, pill controls ══
   Real values live in tokens.css (loaded first). This block maps the legacy
   variable names the rest of this file (and the markup app.js emits) reads
   onto the nullobj tokens. */
:root {
  --surface:         var(--bg);
  --bg-elevated:     var(--bg);
  --bg-grouped:      var(--wash);
  --bg-tertiary:     var(--line);
  --ink-primary:     var(--fg);
  --separator:       var(--line);
  --separator-op:    var(--line);
  --label:           var(--fg);
  --label-2:         color-mix(in srgb, var(--fg) 72%, var(--bg));
  --label-3:         var(--muted);
  --label-4:         var(--faint);
  --fill:            var(--faint);
  --border:          var(--line);

  --accent:          var(--fg);
  --accent-2:        var(--fg);
  --accent-gradient: var(--fg);
  --accent-ink:      var(--bg);
  --blue:            var(--fg);
  --teal:            var(--fg);

  /* status keeps semantic hue (good/bad/caution); nothing else is coloured */
  --green:  var(--ok);
  --red:    var(--danger);
  --amber:  var(--warn);
  --purple: var(--muted);
  --bubble-out:   var(--fg);
  --bubble-in:    var(--wash);
  --tick-blue:    var(--fg);
  --sig-ex:       var(--green);
  --sig-gd:       color-mix(in srgb, var(--green) 55%, var(--amber));
  --sig-ok:       var(--amber);
  --sig-bad:      var(--red);
  --sidebar-w:    300px;
  --map-w:        340px;

  --radius-card:    var(--radius-md);
  --radius-control: 10px;
  --radius-badge:   var(--radius-pill);
  --mono: var(--font-mono);
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; -webkit-font-smoothing:antialiased; }
html, body { height:100vh; overflow:hidden; background:var(--bg); color:var(--label); font-family:var(--font-sans); font-size:14px; line-height:1.5; letter-spacing:-0.005em; }
::selection { background:var(--fg); color:var(--bg); }
:focus { outline:none; }
:focus-visible { outline:2px solid var(--fg); outline-offset:2px; }

/* ── MATERIAL ICONS ── */
.icon {
  font-family:'Material Symbols Rounded';
  font-weight:300; font-style:normal; font-size:20px;
  line-height:1; letter-spacing:normal; text-transform:none;
  display:inline-flex; align-items:center; justify-content:center;
  white-space:nowrap; word-wrap:normal; direction:ltr;
  font-variation-settings:'FILL' 0, 'wght' 300, 'GRAD' 0, 'opsz' 24;
  user-select:none; flex-shrink:0;
}
.icon.filled { font-variation-settings:'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24; }
.icon.sm { font-size:16px; }
.icon.lg { font-size:24px; }
.icon.xl { font-size:32px; }

/* ── LAYOUT ── */
.shell { display:flex; height:100vh; overflow:hidden; }

/* ── CONVERSATION COLUMN ── */

.status-dot { width:8px; height:8px; border-radius:50%; background:var(--label-4); flex-shrink:0; transition:all .3s; }
.status-dot.live { background:var(--green); animation:pulse 2s infinite; }
.status-dot.connecting { background:var(--amber); animation:pulse .5s infinite; }
.status-dot.reconnecting { background:var(--amber); animation:pulse .3s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.35} }
.status-text { font-size:12px; color:var(--label-2); flex:1; }
.uptime-text { font-size:11px; color:var(--label-3); font-variant-numeric:tabular-nums; font-family:var(--font-mono); }

/* Connect form */
.conn-form { padding:10px 12px; border-bottom:1px solid var(--separator); flex-shrink:0; display:flex; gap:8px; align-items:center; }
.conn-ip { flex:1; background:var(--bg-grouped); border:none; border-radius:var(--radius-control); color:var(--label); font-size:13px; font-family:inherit; padding:8px 11px; outline:none; min-width:0;  }
.conn-ip::placeholder { color:var(--label-3); }
.btn-connect { padding:8px 14px; border-radius:var(--radius-control); border:none; background:var(--accent-gradient); color:var(--accent-ink); font-size:13px; font-weight:600; font-family:inherit; cursor:pointer; white-space:nowrap; transition:opacity .15s, box-shadow .2s; flex-shrink:0;  }
.btn-connect:hover { opacity:.9;  }
.btn-connect.live { background:var(--red); }

/* Filter */
.filter-seg { display:flex; margin:8px 12px; background:var(--bg-grouped); border-radius:var(--radius-control); padding:2px; flex-shrink:0;  }
.fseg { flex:1; padding:6px 0; text-align:center; font-size:12px; font-weight:500; color:var(--label-2); border-radius:10px; border:none; background:transparent; cursor:pointer; transition:all .18s; }
.fseg.active { background:var(--surface); color:var(--label); font-weight:600;  }

/* Chat list */
.chat-list { flex:1; overflow-y:auto; }
.chat-list::-webkit-scrollbar { width:4px; }
.chat-list::-webkit-scrollbar-thumb { background:var(--separator); border-radius:2px; }

.list-hdr { padding:5px 16px 3px; font-size:11px; font-weight:600; color:var(--label-3); text-transform:uppercase; letter-spacing:.5px; display:flex; justify-content:space-between; align-items:center; position:sticky; top:0; background:var(--bg-grouped); z-index:2; }
.list-hdr-count { font-size:11px; color:var(--label-3); font-weight:400; }

/* Chat row */
.chat-row { display:flex; align-items:center; gap:10px; padding:9px 12px; cursor:pointer; transition:background .1s; border-bottom:1px solid var(--separator-op); position:relative; }
.chat-row:hover { background:var(--bg-grouped); }
.chat-row.active { background:var(--bg-grouped); }
.chat-row:active { background:var(--bg-tertiary); }

.avatar { width:42px; height:42px; border-radius:50%; flex-shrink:0; display:flex; align-items:center; justify-content:center; font-size:13px; font-weight:700; position:relative; }
.avatar.ch-av { background:var(--fg); border:1px solid var(--fg); color:var(--bg); }
.avatar.node-av { background:var(--bg-tertiary); color:var(--label-2); border:1.5px solid var(--separator); font-family:var(--font-mono); font-size:11px; }
.avatar.me-av { background:transparent; border:1px solid var(--green); color:var(--green); }
.avatar.offline-av { opacity:.45; }
.online-ring::after { content:''; position:absolute; bottom:1px; right:1px; width:11px; height:11px; border-radius:50%; background:var(--green); border:2px solid var(--bg-elevated); }

.row-info { flex:1; min-width:0; }
.row-name { font-size:14px; font-weight:600; color:var(--label); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; display:flex; align-items:center; gap:5px; }
.row-name .you-badge { font-size:10px; font-weight:500; color:var(--green); border:1px solid var(--green); padding:0 7px; border-radius:var(--radius-pill); text-transform:uppercase; letter-spacing:var(--tracking-caps); font-weight:600; }
.row-preview { font-size:12px; color:var(--label-2); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; margin-top:2px; display:flex; align-items:center; gap:4px; }
.row-meta { display:flex; flex-direction:column; align-items:flex-end; gap:4px; flex-shrink:0; }
.row-time { font-size:11px; color:var(--label-3); }
.unread-badge { background:var(--accent); color:var(--bg); font-size:11px; font-weight:600; border-radius:10px; padding:1px 6px; min-width:18px; text-align:center; }

.sig-dot { width:7px; height:7px; border-radius:50%; flex-shrink:0; }

/* Node detail popover (shared by Peers + Map) — a floating modal, not a layout column */
.nd-modal { width:380px; max-width:90vw; }
.nd-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:6px; margin-bottom:8px; }
.nd-stat { background:var(--bg-grouped); border-radius:var(--radius-control); padding:7px 9px;  }
.nd-sl { font-size:9px; text-transform:uppercase; letter-spacing:.6px; color:var(--label-3); font-weight:600; display:block; }
.nd-sv { font-size:13px; font-weight:600; color:var(--label); display:block; margin-top:2px; font-variant-numeric:tabular-nums; font-family:var(--font-mono); }
.nd-pos { font-size:11px; color:var(--label-2); background:var(--bg-grouped); border-radius:var(--radius-control); padding:6px 9px; margin-bottom:8px; font-variant-numeric:tabular-nums; font-family:var(--font-mono);  }
.nd-last { font-size:11px; color:var(--label-3); margin-bottom:8px; }
.nd-actions { display:flex; gap:6px; }
.nd-btn { flex:1; display:flex; align-items:center; justify-content:center; gap:5px; padding:8px 6px; border-radius:var(--radius-control); border:none; background:var(--bg-elevated); color:var(--label-2); font-size:12px; font-weight:600; font-family:inherit; cursor:pointer; transition:all .15s;  }
.nd-btn:hover {  color:var(--label); }
.nd-btn.primary { background:var(--accent); color:var(--bg); }
.nd-btn.primary:hover { opacity:.85;  }

/* ── MAP PANEL ── */
.map-panel { display:flex; flex-direction:column; overflow:hidden; position:relative; min-width:0; flex:1; }
.map-pills { display:flex; gap:6px; }
.map-pill { background:var(--bg-grouped); border-radius:var(--radius-badge); padding:3px 9px; font-size:11px; color:var(--label-2); font-weight:500; display:flex; align-items:center; gap:4px;  }
.map-pill .v { color:var(--label); font-weight:700; }
.map-body { flex:1; position:relative; min-height:0; display:flex; flex-direction:column; }
#map { flex:1; }
.leaflet-tile { filter:none; }
.leaflet-container { background:var(--wash); }
.leaflet-control-attribution { background:color-mix(in srgb, var(--bg) 90%, transparent)!important; color:var(--muted)!important; font-size:9px!important; border-radius:4px 0 0 0!important; }
.leaflet-control-attribution a { color:var(--accent)!important; }
.leaflet-control-zoom { border:none!important; margin:10px!important; }
.leaflet-control-zoom a { background:var(--surface)!important; color:var(--accent)!important; !important; border:none!important; border-radius:var(--radius-control)!important; width:30px!important; height:30px!important; line-height:30px!important; font-size:16px!important; margin-bottom:4px!important; display:block!important; }
.mesh-pin { display:flex; align-items:center; justify-content:center; border-radius:50%; border:2px solid; cursor:pointer; transition:transform .15s; }
.mesh-pin:hover { transform:scale(1.25); }
/* Leaflet tooltip override for legibility */
.leaflet-tooltip.mesh-lbl {
  background:var(--bg);
  border:1px solid var(--border);
  color:var(--label);
  padding:5px 10px;
  border-radius:var(--radius-control);
  font-family:var(--font-sans);
  font-size:12px;
  font-weight:600;
  white-space:nowrap;
  
  letter-spacing:-.1px;
}
.leaflet-tooltip.mesh-lbl::before { display:none; }
.map-legend { position:absolute; bottom:12px; left:10px; z-index:450; background:var(--surface); border:none; border-radius:var(--radius-control); padding:10px 14px;  }
.ml-title { font-size:10px; text-transform:uppercase; letter-spacing:.6px; color:var(--label-3); font-weight:700; margin-bottom:8px; }
.ml-row { display:flex; align-items:center; gap:8px; font-size:12px; color:var(--label); font-weight:500; margin-bottom:5px; }
.ml-row:last-child { margin-bottom:0; }
.ml-dot { width:9px; height:9px; border-radius:50%; flex-shrink:0; }

/* ── CHAT PANEL ── */
.chat-panel {
  display:flex; flex-direction:column; overflow:hidden; min-width:0;
  background:var(--surface);
}

.chat-header { height:54px; background:var(--bg-elevated); padding:0 14px; border-bottom:1px solid var(--separator); display:flex; align-items:center; gap:10px; flex-shrink:0; }
.ch-avi { width:34px; height:34px; border-radius:50%; background:var(--bg-grouped); display:flex; align-items:center; justify-content:center; flex-shrink:0;  }
.ch-info { flex:1; min-width:0; }
.ch-name { font-size:15px; font-weight:600; letter-spacing:-.2px; color:var(--label); }
.ch-sub { font-size:12px; color:var(--label-2); margin-top:1px; }
.stat-bar { display:flex; gap:6px; flex-wrap:wrap; }
.stat-chip { background:var(--bg-grouped); border-radius:8px; padding:2px 8px; font-size:11px; color:var(--label-2); font-weight:500;  }
.stat-chip .v { color:var(--label); font-weight:600; }

/* Message feed */
.msg-feed { flex:1; overflow-y:auto; padding:12px 16px; display:flex; flex-direction:column; gap:2px; }
.msg-feed::-webkit-scrollbar { width:4px; }
.msg-feed::-webkit-scrollbar-thumb { background:var(--separator); border-radius:2px; }

/* Date divider */
.date-div { align-self:center; background:var(--bg-grouped); color:var(--label-2); font-size:12px; font-weight:500; padding:4px 12px; border-radius:var(--radius-badge); margin:8px 0; }

/* Empty state */
.msg-empty { flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px; color:var(--label-3); text-align:center; padding:24px; }
.msg-empty .icon { font-size:48px; color:var(--label-4); }
.msg-empty-title { font-size:16px; font-weight:600; color:var(--label-2); }
.msg-empty-sub { font-size:13px; color:var(--label-3); }

/* Message bubbles — Apple iMessage style */
.msg { display:flex; flex-direction:column; max-width:72%; animation:msgIn .18s ease; margin-bottom:2px; }
@keyframes msgIn { from{opacity:0;transform:translateY(3px)} to{opacity:1;transform:translateY(0)} }
.msg.out { align-self:flex-end; align-items:flex-end; }
.msg.in  { align-self:flex-start; align-items:flex-start; }
.msg.sys-msg { align-self:center; max-width:85%; }

.bubble {
  padding:8px 12px;
  border-radius:18px;
  position:relative;
  line-height:1.45;
  word-break:break-word;
}
/* Clean iMessage-style tails using border-radius, no pseudo-element triangle */
.msg.out .bubble {
  background:var(--bubble-out);
  color:var(--accent-ink); /* teal bubble reads better with white text/icons than dark ink */
  border-bottom-right-radius:4px;
}
.msg.in .bubble {
  background:var(--bubble-in);
  color:var(--label);
  border-bottom-left-radius:4px;
}
.msg.sys-msg .bubble {
  background:transparent;
  color:var(--label-3);
  font-size:11px;
  padding:3px 8px;
  text-align:center;
}

.bubble-sender { font-size:12px; font-weight:600; color:var(--teal); margin-bottom:3px; display:block; }
.msg.out .bubble-sender { display:none; }
.bubble-text { font-size:15px; color:inherit; padding-bottom:14px; }
.msg.sys-msg .bubble-text { padding-bottom:0; }
.bubble-footer {
  position:absolute; bottom:5px; right:10px;
  display:flex; align-items:center; gap:3px;
}
.bubble-time { font-size:10px; color:color-mix(in srgb, var(--bg) 70%, transparent); white-space:nowrap; }
.msg.in .bubble-time { color:var(--label-3); }
.msg.sys-msg .bubble-footer { display:none; }

/* Tick marks */
.ticks { display:flex; align-items:center; }
.ticks .icon { font-size:14px; }
.ticks.pending .icon    { color:color-mix(in srgb, var(--bg) 50%, transparent); }
.ticks.sent .icon       { color:color-mix(in srgb, var(--bg) 70%, transparent); }
.ticks.ack .icon        { color:var(--amber); }
.ticks.ack-final .icon  { color:color-mix(in srgb, var(--bg) 70%, transparent); }
.ticks.nack .icon       { color:var(--red); }

/* Status line below bubble */
.msg-status-line { font-size:11px; margin-top:3px; display:flex; align-items:center; gap:4px; cursor:pointer; width:fit-content; }
.msg-status-line:hover   { text-decoration:underline; }
.msg-status-line.pending { color:var(--label-3); }
.msg-status-line.sent    { color:var(--label-3); }
.msg-status-line.ack     { color:var(--amber); }
.msg-status-line.ack-final { color:var(--label-3); }
.msg-status-line.nack,
.msg-status-line.maxretransmit { color:var(--red); }
.msg-status-line .icon   { font-size:13px; }

/* Incoming signal info */
.bubble-sig { font-size:10px; color:var(--label-3); margin-top:3px; }

/* Compose */
.compose { padding:8px 12px 10px; background:var(--bg-elevated); border-top:1px solid var(--separator); flex-shrink:0; }
.compose-dest { font-size:11px; color:var(--label-3); margin-bottom:6px; display:flex; align-items:center; gap:4px; }
.compose-dest strong { color:var(--label-2); }
.compose-row { display:flex; gap:8px; align-items:flex-end; }
.compose-field { flex:1; background:var(--bg-grouped); border-radius:var(--radius-badge); display:flex; align-items:center; padding:2px 4px 2px 14px; gap:4px; min-height:38px;  }
.compose-inp { flex:1; background:transparent; border:none; color:var(--label); font-size:15px; font-family:inherit; outline:none; }
.compose-inp::placeholder { color:var(--label-3); }
.compose-inp:disabled { opacity:.4; }
.btn-send { width:36px; height:36px; border-radius:50%; border:none; background:var(--accent-gradient); color:var(--accent-ink); cursor:pointer; display:flex; align-items:center; justify-content:center; transition:opacity .15s, box-shadow .2s; flex-shrink:0;  }
.btn-send:hover { opacity:.9;  }
.btn-send:disabled { background:var(--bg-tertiary);  cursor:not-allowed; }
.btn-send:disabled .icon { color:var(--label-3); }

/* Overlays */
.ov { position:fixed; inset:0; background:color-mix(in srgb, var(--ink-primary) 45%, transparent); z-index:1000; display:none; align-items:center; justify-content:center; }
.ov.show { display:flex; }
.modal {
  background:var(--surface);
  border:none;
  border-radius:var(--radius-card);
  max-height:80vh;
  overflow:hidden;
  display:flex;
  flex-direction:column;
  
}
.mhd { padding:14px 18px; border-bottom:1px solid var(--separator); display:flex; align-items:center; gap:10px; flex-shrink:0; }
.mt { font-size:15px; font-weight:600; flex:1; }
.mx { background:var(--bg-grouped); border:none; color:var(--label-2); width:28px; height:28px; border-radius:50%; cursor:pointer; display:flex; align-items:center; justify-content:center; }
.mx:hover { background:var(--bg-tertiary); color:var(--label); }
.mbd { overflow-y:auto; padding:14px 18px; flex:1; }
pre.jp { font-family:var(--font-mono); font-size:11px; color:var(--label-2); white-space:pre-wrap; word-break:break-word; line-height:1.7; }
pre.jp .k{color:var(--teal)} pre.jp .s{color:var(--green)} pre.jp .n{color:var(--amber)} pre.jp .b{color:var(--purple)}

/* Toasts */
.toasts { position:fixed; bottom:80px; left:50%; transform:translateX(-50%); z-index:2000; display:flex; flex-direction:column; align-items:center; gap:6px; pointer-events:none; }
.toast { background:var(--surface); border:none; border-radius:var(--radius-control); padding:9px 16px; font-size:13px; font-weight:500; color:var(--label);  animation:tIn .2s ease; display:flex; align-items:center; gap:8px; }
.toast.ok  { border-color:var(--green); }
.toast.err { border-color:var(--red); }
.toast.wrn { border-color:var(--amber); }
@keyframes tIn { from{opacity:0;transform:translateY(6px)} to{opacity:1;transform:translateY(0)} }
@keyframes spin { to{transform:rotate(360deg)} }
.spinner { width:14px; height:14px; border:2px solid var(--separator); border-top-color:var(--accent); border-radius:50%; animation:spin .7s linear infinite; display:inline-block; }

/* Icon button */
.icon-btn { width:32px; height:32px; border-radius:50%; border:none; background:transparent; color:var(--label-2); cursor:pointer; display:flex; align-items:center; justify-content:center; transition:background .15s; flex-shrink:0; }
.icon-btn:hover { background:var(--bg-grouped); color:var(--label); }

/* ── PORT SELECTOR ── */
.port-sel {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 12px 8px;
  border-bottom: 1px solid var(--separator);
  flex-shrink: 0;
}
.port-label {
  font-size: 11px; font-weight: 600; color: var(--label-3);
  text-transform: uppercase; letter-spacing: .5px; flex-shrink: 0;
}
.port-opt {
  display: flex; align-items: center; gap: 5px;
  cursor: pointer; font-size: 12px; font-weight: 500; color: var(--label-2);
  user-select: none;
}
.port-opt input[type=radio] {
  appearance: none; -webkit-appearance: none;
  width: 14px; height: 14px; border-radius: 50%;
  border: 1.5px solid var(--fill);
  background: transparent; cursor: pointer;
  transition: all .15s; flex-shrink: 0;
  position: relative;
}
.port-opt input[type=radio]:checked {
  border-color: var(--accent);
  background: var(--accent);
}
.port-opt input[type=radio]:checked::after {
  content: ''; position: absolute;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--bg); top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.port-opt:hover input[type=radio]:not(:checked) { border-color: var(--label-2); }
.port-opt span { font-family: var(--font-mono); }


/* ── MAP NODE STYLES ── */
@keyframes nodePulse { 0%,100%{opacity:1} 50%{opacity:.55} }
@keyframes nodePulseBlue { 0%,100%{opacity:1} 50%{opacity:.55} }
.mesh-pin {
  border-radius: 50% !important;
  cursor: pointer;
  transition: transform .15s;
  display: flex !important;
  align-items: center;
  justify-content: center;
}
.mesh-pin:hover { transform: scale(1.3) !important; }
.mesh-pin.online  { animation: nodePulse 2.5s ease-in-out infinite; }
.mesh-pin.me-pin  { animation: nodePulseBlue 2.5s ease-in-out infinite; }
.mesh-pin.offline { opacity: .45; }

/* Permanent label on map */
.node-map-label {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--label);
  padding: 2px 7px;
  border-radius: var(--radius-control);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  pointer-events: none;
  
  letter-spacing: -.1px;
}
.leaflet-tooltip.node-map-label {  }
.leaflet-tooltip.node-map-label::before { display: none; }



/* Channels list in channels tab */
.channels-list { flex: 1; overflow-y: auto; padding: 8px; }
.channels-list::-webkit-scrollbar { width: 4px; }
.channels-list::-webkit-scrollbar-thumb { background: var(--separator); border-radius: 2px; }
.channel-row {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 10px; cursor: pointer;
  transition: background .12s; margin-bottom: 2px;
}
.channel-row:hover { background: var(--bg-grouped); }
.channel-row.active { background: var(--bg-grouped);  }
.ch-row-icon {
  width: 38px; height: 38px; border-radius: 50%;
  background: transparent; border: 1px solid var(--line-strong);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.ch-row-icon .icon { font-size: 18px; color: var(--accent); }
.ch-row-info { flex: 1; min-width: 0; }
.ch-row-name { font-size: 14px; font-weight: 600; color: var(--label); }
.ch-row-sub { font-size: 12px; color: var(--label-3); margin-top: 1px; }
.ch-row-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.ch-row-badge { background: var(--accent); color: #fff; font-size: 11px; font-weight: 600; border-radius: 8px; padding: 1px 6px; }
.ch-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; flex: 1; color: var(--label-3); font-size: 13px; gap: 8px; text-align: center; padding: 24px; }
.ch-empty .icon { font-size: 36px; color: var(--label-4); }


/* ══════════════════════════════════════════════════════════════════
   NAVIGATION SHELL
   ══════════════════════════════════════════════════════════════════ */
:root {
  --nav-w: 252px;
  --sp-1: var(--space-xs); --sp-2: var(--space-sm); --sp-3: var(--space-md); --sp-4: var(--space-lg); --sp-5: var(--space-2xl); --sp-6: var(--space-3xl);
  --radius: var(--radius-control);
}

.nav {
  width:var(--nav-w); flex:0 0 var(--nav-w);
  display:flex; flex-direction:column;
  background:var(--surface);
  border-right:1px solid var(--separator);
  overflow:hidden;
}

/* Identity */
.nav-identity { display:flex; align-items:center; gap:10px; padding:var(--sp-3) var(--sp-4); border-bottom:1px solid var(--separator); }
.nav-id-icon { width:36px; height:36px; border-radius:var(--radius-control); background:var(--accent-gradient); display:flex; align-items:center; justify-content:center; flex-shrink:0;  }
.nav-id-text { flex:1; min-width:0; }
.nav-id-name { font-size:14px; font-weight:700; letter-spacing:-.2px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.nav-id-sub { font-size:11px; color:var(--label-3); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; margin-top:1px; }

/* Connection status button */
.nav-status { display:flex; align-items:center; gap:var(--sp-2); width:100%; padding:10px var(--sp-4); background:transparent; border:none; border-bottom:1px solid var(--separator); cursor:pointer; text-align:left; font-family:inherit; transition:background .12s; }
.nav-status:hover { background:var(--bg-grouped); }
.nav-status-chev { color:var(--label-3); }

/* Quick connect panel */
.nav-conn { display:none; border-bottom:1px solid var(--separator); }
.nav-conn.open { display:block; }
.nav-conn .conn-form { border-bottom:none; padding:10px 12px 4px; }
.nav-conn .port-sel { border-bottom:none; }

/* Nav group */
.nav-group { flex:1; overflow-y:auto; padding:var(--sp-3) var(--sp-2); }
.nav-group::-webkit-scrollbar { width:4px; }
.nav-group::-webkit-scrollbar-thumb { background:var(--separator); border-radius:2px; }
.nav-group-title { font-size:10px; font-weight:700; text-transform:uppercase; letter-spacing:.7px; color:var(--label-3); padding:var(--sp-2) 10px var(--sp-1); }
.nav-item { display:flex; align-items:center; gap:10px; width:100%; padding:9px 10px; margin-bottom:2px; border:none; border-radius:var(--radius-control); background:transparent; color:var(--label-2); font-family:inherit; font-size:13.5px; font-weight:500; cursor:pointer; transition:background .12s, color .12s, box-shadow .12s; text-align:left; outline:none; }
.nav-item:hover { background:var(--bg-grouped); color:var(--label); }
.nav-item:focus-visible { outline:2px solid var(--fg); outline-offset:-2px; }
.nav-item.active { background:var(--surface); color:var(--accent); font-weight:600;  }
.nav-item.active .icon { color:var(--accent); }
.nav-item-label { flex:1; }
.nav-item-count { font-size:11px; color:var(--label-3); font-variant-numeric:tabular-nums; font-family:var(--font-mono); }

/* Bottom rail */
.nav-rail { display:flex; align-items:center; gap:2px; padding:var(--sp-2) 10px; border-top:1px solid var(--separator); }
.rail-btn { width:32px; height:32px; border-radius:9px; border:none; background:transparent; color:var(--label-3); cursor:pointer; display:flex; align-items:center; justify-content:center; transition:all .12s; outline:none; }
.rail-btn:hover { background:var(--bg-grouped); color:var(--label); }
.rail-btn:focus-visible { outline:2px solid var(--fg); outline-offset:-2px; }
.rail-btn.active { color:var(--accent); }
.rail-spacer { flex:1; }

/* ══ MAIN / PAGES ══ */
.main { flex:1; min-width:0; display:flex; flex-direction:column; overflow:hidden; background:var(--bg); }
.page { display:none; flex-direction:column; flex:1; min-height:0; overflow:hidden; }
.page.active { display:flex; }

.page-hdr {
  display:flex; align-items:center; gap:var(--sp-3); padding:var(--sp-3) var(--sp-5);
  border-bottom:1px solid var(--separator);
  background:var(--bg-elevated);
  flex-shrink:0; min-height:64px;
}
.page-hdr-icon { color:var(--label-3); font-size:22px; }
.page-hdr-text { flex:1; min-width:0; }
.page-title { font-size:17px; font-weight:700; letter-spacing:-.3px; }
.page-sub { font-size:12px; color:var(--label-3); margin-top:2px; }
.page-body { flex:1; min-height:0; display:flex; overflow:hidden; }
.page-body.split > .conv-col { flex:0 0 300px; }
/* Pages that stack a tab bar above scrolling content (Config) need a column
   flow — without this the tab bar is a flex row item and stretches to the
   full page height, ballooning each button. */
.page-body.stacked { flex-direction:column; }

.conv-col {
  display:flex; flex-direction:column; min-width:0;
  background:var(--surface);
  border-right:1px solid var(--separator);
  overflow:hidden;
}
.conv-new { display:flex; align-items:center; justify-content:center; gap:6px; margin:var(--sp-2); padding:9px; border:1px dashed var(--separator); border-radius:var(--radius-control); background:transparent; color:var(--label-2); font-family:inherit; font-size:12.5px; font-weight:600; cursor:pointer; transition:all .12s; }
.conv-new:hover { border-color:var(--accent); color:var(--accent); }
.chat-panel { flex:1 1 0; }
.filter-seg.compact { margin:0; width:180px; }

/* Empty states */
.page-empty, .list-empty { flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; gap:var(--sp-2); padding:var(--sp-6) var(--sp-5); margin:auto; max-width:460px; }
.page-empty .icon, .list-empty .icon { color:var(--label-4); }
.page-empty-title, .list-empty-title { font-size:15px; font-weight:600; color:var(--label-2); }
.page-empty-sub, .list-empty-sub { font-size:13px; color:var(--label-3); line-height:1.6; }
.link-btn { background:none; border:none; color:var(--accent); font:inherit; cursor:pointer; padding:0; text-decoration:underline; }

/* ══ PEERS ══ */
.peers-scroll { flex:1; overflow-y:auto; padding:var(--sp-5); display:flex; }
.peers-scroll::-webkit-scrollbar { width:6px; }
.peers-scroll::-webkit-scrollbar-thumb { background:var(--separator); border-radius:3px; }
.peer-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:var(--sp-3); width:100%; align-content:start; }
.peer-card {
  background:var(--surface);
  border:1px solid var(--line); border-radius:var(--radius-card);
  padding:var(--sp-3) var(--sp-4) var(--sp-4); cursor:pointer;
  
  transition:border-color var(--dur-fast) var(--ease-out);
}
.peer-card:hover { border-color:var(--fg); }
.peer-card.selected { border-color:var(--fg); box-shadow:0 0 0 1px var(--fg); }
.peer-head { display:flex; align-items:center; gap:10px; }
.peer-title { flex:1; min-width:0; }
.peer-name { font-size:14px; font-weight:600; display:flex; align-items:center; gap:6px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.peer-id { font-size:11px; color:var(--label-3); font-family:var(--font-mono); margin-top:2px; }
.peer-state { display:flex; align-items:center; gap:5px; font-size:11px; color:var(--label-2); flex-shrink:0; }
.peer-facts { display:grid; grid-template-columns:1fr 1fr; gap:var(--sp-1) var(--sp-3); margin:var(--sp-3) 0; }
.peer-fact { display:flex; justify-content:space-between; gap:var(--sp-2); font-size:12px; padding:3px 0; border-bottom:1px solid var(--separator-op); }
.pf-l { color:var(--label-3); }
.pf-v { color:var(--label); font-weight:600; font-variant-numeric:tabular-nums; font-family:var(--font-mono); text-align:right; }
.peer-actions { display:flex; gap:6px; }

/* ══ CONFIG ══ */
.cfg-tabs { display:flex; flex-wrap:wrap; align-items:center; gap:0; padding:0 var(--sp-5); border-bottom:1px solid var(--separator); flex-shrink:0; overflow-x:auto; }
.cfg-tab { padding:11px 2px; margin-right:22px; border:none; border-bottom:2px solid transparent; background:transparent; color:var(--label-3); font-family:inherit; font-size:12.5px; font-weight:600; cursor:pointer; transition:color .12s, border-color .12s; outline:none; white-space:nowrap; }
.cfg-tab:hover { color:var(--label-2); }
.cfg-tab:focus-visible { color:var(--label); }
.cfg-tab.active { color:var(--accent); border-bottom-color:var(--accent); }
/* Module sub-tabs — one row of pills inside the Module tab */
.cfg-subtabs { display:flex; flex-wrap:wrap; gap:6px; margin-bottom:2px; }
.cfg-subtab { padding:5px 11px; border:1px solid var(--separator); border-radius:999px; background:var(--surface); color:var(--label-3); font-family:inherit; font-size:11.5px; font-weight:600; cursor:pointer; transition:color .12s, border-color .12s, background .12s; outline:none; white-space:nowrap; }
.cfg-subtab:hover { color:var(--label-2); border-color:var(--label-3); }
.cfg-subtab.active { color:var(--bg); background:var(--accent); border-color:var(--accent); }
.cfg-scroll { flex:1; overflow-y:auto; display:flex; }
.cfg-scroll::-webkit-scrollbar { width:6px; }
.cfg-scroll::-webkit-scrollbar-thumb { background:var(--separator); border-radius:3px; }
.cfg-wrap { width:100%; max-width:760px; margin:0 auto; padding:var(--sp-5); display:flex; flex-direction:column; gap:var(--sp-4); }

.card {
  background:var(--surface);
  border:none;
  border-radius:var(--radius-card);
  
  overflow:hidden;
  
}

.card-hd { display:flex; align-items:flex-start; gap:var(--sp-3); padding:var(--sp-4); border-bottom:1px solid var(--separator); }
.card-title { font-size:14.5px; font-weight:700; letter-spacing:-.2px; }
.card-desc { font-size:12.5px; color:var(--label-3); margin-top:3px; line-height:1.5; }
.card-body { padding:var(--sp-2) var(--sp-4) var(--sp-3); }
.pill-soon { flex-shrink:0; font-size:10px; font-weight:700; letter-spacing:.5px; text-transform:uppercase; color:var(--amber); border:1px solid var(--amber); border-radius:var(--radius-pill); padding:3px 9px; }

.cfg-row { display:flex; align-items:center; gap:var(--sp-4); padding:var(--sp-3) 0; border-bottom:1px solid var(--separator-op); }
.cfg-row:last-child { border-bottom:none; }
.cfg-row-text { flex:1; min-width:0; }
.cfg-label { font-size:13.5px; font-weight:600; }
.cfg-help { font-size:12px; color:var(--label-3); margin-top:2px; line-height:1.5; }
.cfg-control { display:flex; align-items:center; gap:6px; flex-shrink:0; }
.cfg-input, .cfg-select { background:var(--bg-grouped); border:none; border-radius:var(--radius-control); color:var(--label); font-family:inherit; font-size:13px; padding:7px 10px; outline:none; min-width:0;  }
.cfg-input:focus, .cfg-select:focus { border-color:var(--fg); box-shadow:var(--ring); }
.cfg-input.num { width:96px; text-align:right; font-variant-numeric:tabular-nums; font-family:var(--font-mono); }
.cfg-input[type=text] { width:200px; }
.cfg-select { min-width:180px; }
.cfg-unit { font-size:11px; color:var(--label-3); }
.cfg-note { font-size:12px; color:var(--label-3); line-height:1.6; }
.cfg-actions { display:flex; align-items:center; gap:var(--sp-2); }
.cfg-status { flex:1; font-size:12px; color:var(--label-3); }
.cfg-status.dirty { color:var(--amber); font-weight:600; }

.toggle { width:44px; height:26px; border-radius:13px; border:none; background:var(--bg-tertiary); position:relative; cursor:pointer; transition:background .18s; flex-shrink:0;  }
.toggle .knob { position:absolute; top:3px; left:3px; width:20px; height:20px; border-radius:50%; background:var(--surface); transition:transform .18s;  }
.toggle.on { background:var(--accent); }
.toggle.on .knob { transform:translateX(18px); }

/* ══ SETTINGS ══ */
.btn-primary { display:flex; align-items:center; gap:6px; padding:8px 14px; border-radius:var(--radius-control); border:none; background:var(--accent-gradient); color:var(--accent-ink); font-family:inherit; font-size:13px; font-weight:600; cursor:pointer; transition:opacity .15s, box-shadow .2s;  }
.btn-primary:hover { opacity:.9;  }
.btn-ghost { display:flex; align-items:center; gap:6px; padding:7px 12px; border-radius:var(--radius-control); border:none; background:var(--bg-elevated); color:var(--label-2); font-family:inherit; font-size:12.5px; font-weight:600; cursor:pointer; transition:all .15s; flex-shrink:0;  }
.btn-ghost:hover { color:var(--label);  }

/* ══ FIRST RUN ══ */
.ov.first-run { background:color-mix(in srgb, var(--ink-primary) 55%, transparent); }
.fr-card {
  width:440px; max-width:92vw;
  background:var(--surface);
  border:none; border-radius:var(--radius-card);
  padding:var(--sp-6) var(--sp-5) var(--sp-5);
  
  text-align:center;
}
.fr-icon { width:56px; height:56px; margin:0 auto var(--sp-4); border-radius:var(--radius-control); background:var(--accent-gradient); display:flex; align-items:center; justify-content:center;  }
.fr-title { font-size:19px; font-weight:700; letter-spacing:-.4px; }
.fr-body { font-size:13px; color:var(--label-2); line-height:1.6; margin:var(--sp-2) 0 var(--sp-5); }
.fr-field { text-align:left; margin-bottom:var(--sp-3); }
.fr-label { display:block; font-size:11px; font-weight:700; text-transform:uppercase; letter-spacing:.6px; color:var(--label-3); margin-bottom:5px; }
.fr-input { width:100%; background:var(--bg-grouped); border:none; border-radius:var(--radius-control); color:var(--label); font-family:inherit; font-size:15px; padding:10px 12px; outline:none;  }
.fr-input:focus { border-color:var(--fg); box-shadow:var(--ring); }
.port-sel.bare { border-bottom:none; padding:0; gap:var(--sp-4); }
.fr-cta { width:100%; margin-top:var(--sp-3); padding:12px; border:none; border-radius:var(--radius-control); background:var(--accent-gradient); color:var(--accent-ink); font-family:inherit; font-size:15px; font-weight:600; cursor:pointer; display:flex; align-items:center; justify-content:center; gap:8px; transition:opacity .15s, box-shadow .2s;  }
.fr-cta:hover { opacity:.92;  }
.fr-cta:disabled { opacity:.6; cursor:default; }
.fr-skip { margin-top:var(--sp-2); background:none; border:none; color:var(--label-3); font-family:inherit; font-size:12.5px; cursor:pointer; }
.fr-skip:hover { color:var(--label-2); }

/* ══ RESPONSIVE ══ */
@media (max-width: 1180px) {
  .page-body.split > .conv-col { flex:0 0 260px; }
}
@media (max-width: 980px) {
  .nav { --nav-w:210px; }
  .page-hdr .stat-bar { display:none; }
}

/* Nav item unread badges */
.tab-badge { background:var(--red); color:var(--bg); font-size:10px; font-weight:700; border-radius:9px; padding:1px 6px; min-width:18px; text-align:center; font-family:inherit; }


/* ══════════════════════════════════════════════════════════════════
   NULLOBJ IDIOM: pill controls, hairline fields, caps utility text,
   heavy tight headings. No shadows, gradients or accent colour.
   ══════════════════════════════════════════════════════════════════ */
h1,h2,h3,.page-title,.card-title,.fr-title,.mt,.ch-name,.nav-id-name { font-weight:650; letter-spacing:var(--tracking-tight); }
.page-title { font-size:22px; }
.fr-title { font-size:26px; }

/* caps utility labels */
.list-hdr, .nav-group-title, .port-label, .fr-label, .ml-title, .nd-sl, .cfg-status, .tab-badge, .pill-soon, .you-badge {
  text-transform:uppercase; letter-spacing:var(--tracking-caps); font-weight:600;
}
.nav-group-title, .list-hdr, .ml-title { font-size:10.5px; }
.card-hd { border-bottom:1px solid var(--fg); }
.page-hdr { border-bottom:1px solid var(--fg); }

/* hairline fields */
.conn-ip, .cfg-input, .cfg-select, .fr-input, .nd-stat, .nd-pos, .compose-field {
  background:var(--bg); border:1px solid var(--line-strong);
  transition:border-color var(--dur-fast) var(--ease-out);
}
.conn-ip, .cfg-input, .cfg-select, .fr-input { border-radius:var(--radius-pill); padding-left:16px; padding-right:16px; }
.cfg-input.num { padding-right:16px; }
.conn-ip:hover, .cfg-input:hover, .cfg-select:hover, .fr-input:hover { border-color:var(--faint); }
.conn-ip:focus, .cfg-input:focus, .cfg-select:focus, .fr-input:focus, .compose-field:focus-within { border-color:var(--fg); box-shadow:var(--ring); }
.nd-stat, .nd-pos { border-radius:var(--radius-md); border-color:var(--line); }
.compose-field { border-radius:var(--radius-pill); }

/* pill buttons */
.btn-connect, .btn-primary, .fr-cta, .nd-btn, .btn-ghost, .conv-new {
  border-radius:var(--radius-pill); border:1px solid var(--fg);
  letter-spacing:.04em; font-weight:600;
  transition:background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}
.btn-connect, .btn-primary, .fr-cta, .nd-btn.primary { background:var(--fg); color:var(--bg); }
.btn-connect:hover, .btn-primary:hover, .fr-cta:hover, .nd-btn.primary:hover { background:var(--press); border-color:var(--press); opacity:1; }
.btn-connect.live { background:transparent; color:var(--danger); border-color:var(--danger); }
.btn-ghost, .nd-btn { background:var(--bg); color:var(--fg); border-color:var(--line-strong); }
.btn-ghost:hover, .nd-btn:hover { border-color:var(--fg); color:var(--fg); }
.conv-new { border-style:solid; border-color:var(--line-strong); }
.conv-new:hover { border-color:var(--fg); color:var(--fg); }
.btn-send { background:var(--fg); color:var(--bg); }
.btn-send:hover { background:var(--press); opacity:1; }
.btn-send:disabled { background:var(--wash); }
.fr-cta:disabled, .btn-primary:disabled, .btn-connect:disabled { opacity:.4; }
.link-btn { color:var(--fg); }

/* segmented filter */
.filter-seg { background:var(--wash); border:1px solid var(--line); border-radius:var(--radius-pill); padding:4px; }
.fseg { border-radius:var(--radius-pill); }
.fseg.active { background:var(--fg); color:var(--bg); }

/* nav */
.nav-item { border-radius:var(--radius-pill); padding:9px 14px; }
.nav-item.active { background:var(--fg); color:var(--bg); }
.nav-item.active .icon { color:var(--bg); }
.nav-item.active .nav-item-count { color:var(--bg); opacity:.7; }
.nav-id-icon, .fr-icon { background:var(--fg); }
.nav-id-icon .icon, .fr-icon .icon { color:var(--bg) !important; }
.rail-btn.active { background:var(--fg); color:var(--bg); }
.rail-btn { border-radius:50%; }

/* tabs */
.cfg-tab.active { color:var(--fg); border-bottom-color:var(--fg); }
.cfg-subtab { border-radius:var(--radius-pill); }
.cfg-subtab.active { background:var(--fg); color:var(--bg); border-color:var(--fg); }

/* cards and panels: hairline, no shadow */
.card, .peer-card, .modal, .fr-card, .toast, .map-legend, .nd-stat {
  border:1px solid var(--line);
}
.modal, .fr-card { box-shadow:var(--shadow-pop); border-color:var(--line-strong); }
.card-hd { border-bottom-color:var(--line); }
.page-hdr { border-bottom-color:var(--line); }
.toast { border-radius:var(--radius-pill); padding:9px 18px; }
.toast .icon { color:var(--fg) !important; }
.toast.ok .icon { color:var(--green) !important; }
.toast.err .icon { color:var(--red) !important; }
.toast.wrn .icon { color:var(--amber) !important; }

/* chips, badges, pills */
.stat-chip, .map-pill, .date-div { border:1px solid var(--line); background:var(--bg); border-radius:var(--radius-pill); }
.stat-chip { padding:2px 10px; }
.unread-badge, .ch-row-badge, .tab-badge { border-radius:var(--radius-pill); }
.unread-badge, .ch-row-badge { background:var(--fg); color:var(--bg); }
.tab-badge { background:var(--danger); color:var(--bg); }

/* toggle */
.toggle { background:var(--line-strong); box-shadow:none; }
.toggle .knob { background:var(--bg); }
.toggle.on { background:var(--fg); }
.toggle.on .knob { background:var(--bg); }
.port-opt input[type=radio] { border-color:var(--line-strong); }
.port-opt input[type=radio]:checked { border-color:var(--fg); background:var(--fg); }
.port-opt input[type=radio]:checked::after { background:var(--bg); }

/* chat */
.msg.out .bubble { background:var(--fg); color:var(--bg); }
.msg.in .bubble { background:var(--wash); border:1px solid var(--line); }
.bubble-sender { color:var(--muted); text-transform:uppercase; letter-spacing:var(--tracking-caps); font-size:10.5px; font-weight:600; }
.channel-row.active, .chat-row.active { background:var(--wash); box-shadow:none; }
.leaflet-control-zoom a { border:1px solid var(--line-strong) !important; background:var(--bg) !important; color:var(--fg) !important; border-radius:50% !important; }
.node-map-label, .leaflet-tooltip.mesh-lbl { border-radius:var(--radius-pill); box-shadow:none; }
.spinner { border-top-color:var(--fg); }
.leaflet-control-attribution a { color:var(--fg) !important; }