/* ════════════════════════════════════════════════════════════════════
   frames.bitbucketlabs.com — Editorial design, v0.8.5
   Fonts: Inter (UI/display) + Space Mono (technical/mono)
   ════════════════════════════════════════════════════════════════════ */

/* ── DARK THEME (default) ── */
:root, [data-theme="dark"] {
  --bg:#111923; --surface:#1a2334; --surface2:#1e2a3e; --surface3:#243148;
  --border:#26324a; --border2:#2e3d58;
  --text:#d8e2f0; --text2:#8098c0; --text3:#506080;
  --accent:#6699ff; --green:#44cc88; --orange:#ffaa55;
  --yellow:#ffdd66; --purple:#9977ff; --pink:#ff77bb;
  --red:#ff6666; --teal:#44ddcc;
  --nav-bg:rgba(13,18,28,.98);
  --hdr-bg:rgba(17,25,35,.97);
  --code-bg:rgba(102,153,255,.08);
  --key-bg:rgba(68,204,136,.06);
  --key-border:rgba(68,204,136,.22);
  --cert-bg:rgba(153,119,255,.06);
  --cert-border:rgba(153,119,255,.25);
  --expert-bg:#1a2334;
  --ref-bg:rgba(153,119,255,.07);
  --ref-border:rgba(153,119,255,.2);
  --ref-text:#b8a8ff;
  --ref-strong:#d4caff;
  --opt-bg:rgba(255,221,102,.05);
  --opt-border:rgba(255,221,102,.2);
  --phase-sticky-bg:rgba(17,25,35,.98);
  --svg-grid-color:rgba(102,153,255,.025);
  --tag-na-color:#2e3d58;
  --shadow:0 2px 16px rgba(0,0,0,.35);
  --shadow-sm:0 1px 6px rgba(0,0,0,.25);
}

/* ── LIGHT THEME ── */
[data-theme="light"] {
  --bg:#f4f6fc; --surface:#ffffff; --surface2:#e8eef8; --surface3:#dde5f5;
  --border:#c4d0e8; --border2:#a8bcd8;
  --text:#0d1830; --text2:#2a3d6a; --text3:#4060a0;
  --accent:#2244c0; --green:#006644; --orange:#994400;
  --yellow:#776600; --purple:#5533aa; --pink:#994488;
  --red:#991122; --teal:#005566;
  --nav-bg:rgba(13,24,48,.97);
  --hdr-bg:rgba(244,246,252,.98);
  --code-bg:rgba(34,68,192,.07);
  --key-bg:rgba(0,102,68,.06);
  --key-border:rgba(0,102,68,.3);
  --cert-bg:rgba(85,51,170,.05);
  --cert-border:rgba(85,51,170,.3);
  --expert-bg:#e8eef8;
  --ref-bg:rgba(85,51,170,.06);
  --ref-border:rgba(85,51,170,.25);
  --ref-text:#3a2288;
  --ref-strong:#22136a;
  --opt-bg:rgba(119,102,0,.06);
  --opt-border:rgba(119,102,0,.25);
  --phase-sticky-bg:rgba(244,246,252,.99);
  --svg-grid-color:rgba(34,68,192,.035);
  --tag-na-color:#a8bcd8;
  --shadow:0 2px 16px rgba(13,24,48,.1);
  --shadow-sm:0 1px 6px rgba(13,24,48,.08);
}

/* ── RESET ── */
*{margin:0;padding:0;box-sizing:border-box;}
body{
  background:var(--bg);color:var(--text);
  font-family:'Inter',sans-serif;
  min-height:100vh;overflow-x:hidden;
  font-size:14px;line-height:1.5;
}
body::before{
  content:'';position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(var(--svg-grid-color) 1px,transparent 1px),
    linear-gradient(90deg,var(--svg-grid-color) 1px,transparent 1px);
  background-size:44px 44px;
}

/* ════════════════════════════════════════════════════════════════════
   SITE NAV — top navigation bar
   ════════════════════════════════════════════════════════════════════ */
.site-nav{
  position:-webkit-sticky;position:sticky;top:0;z-index:110;
  background:var(--nav-bg);
  border-bottom:1px solid rgba(102,153,255,.15);
  display:flex;align-items:center;padding:0 24px;height:44px;
  box-shadow:var(--shadow);
}
.nav-brand{
  font-family:'Space Mono',monospace;font-size:12px;font-weight:700;
  color:var(--accent);letter-spacing:.04em;white-space:nowrap;
  margin-right:28px;text-decoration:none;flex-shrink:0;
  transition:opacity .15s;
}
.nav-brand:hover{opacity:.75;}
.nav-links{display:flex;gap:0;flex:1;}
.nav-link{
  font-family:'Inter',sans-serif;font-size:12px;font-weight:500;
  color:rgba(180,195,225,.65);padding:0 14px;height:44px;
  display:flex;align-items:center;white-space:nowrap;
  text-decoration:none;position:relative;transition:color .15s;
  letter-spacing:.01em;
}
.nav-link:hover{color:rgba(180,195,225,.9);}
.nav-link.active{color:#fff;font-weight:600;}
.nav-link.active::after{
  content:'';position:absolute;bottom:0;left:14px;right:14px;
  height:2px;background:var(--accent);border-radius:1px;
}
.nav-link.nav-feedback{color:var(--accent);opacity:.8;}
.nav-link.nav-feedback:hover{opacity:1;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:8px;}
.theme-btn{
  font-size:15px;padding:5px 7px;border-radius:6px;
  border:1px solid rgba(102,153,255,.2);
  background:rgba(102,153,255,.08);cursor:pointer;
  transition:all .2s;line-height:1;display:flex;align-items:center;
}
.theme-btn:hover{border-color:var(--accent);transform:scale(1.08);}
[data-theme="light"] .site-nav{background:rgba(255,255,255,.97);border-bottom-color:var(--border);box-shadow:0 1px 8px rgba(0,0,0,.08);}
[data-theme="light"] .nav-link{color:var(--text2);}
[data-theme="light"] .nav-link:hover{color:var(--text);}
[data-theme="light"] .nav-link.active{color:var(--text);}
[data-theme="light"] .nav-link.active::after{background:var(--accent);}
[data-theme="light"] .nav-link.nav-feedback{color:var(--accent);opacity:.85;}
[data-theme="light"] .theme-btn{border-color:var(--border2);background:var(--surface2);}
[data-theme="light"] .nav-brand{color:var(--accent);}

/* ════════════════════════════════════════════════════════════════════
   APP HEADER — protocol selector bar
   ════════════════════════════════════════════════════════════════════ */
.hdr{
  position:-webkit-sticky;position:sticky;top:44px;z-index:100;
  background:var(--hdr-bg);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-sm);
  padding:10px 24px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  min-height:52px;
}
.hdr-brand{display:flex;flex-direction:column;justify-content:center;gap:2px;text-decoration:none;flex-shrink:0;}
.hdr-brand-url{
  font-family:'Inter',sans-serif;font-weight:700;font-size:15px;
  color:var(--text);letter-spacing:-.01em;line-height:1.2;
}
.hdr-brand-sub{
  font-family:'Space Mono',monospace;font-weight:400;font-size:9px;
  color:var(--text3);letter-spacing:.08em;text-transform:uppercase;
}
.proto-label{
  font-family:'Space Mono',monospace;font-size:10px;color:var(--text3);
  white-space:nowrap;text-transform:uppercase;letter-spacing:.06em;
}
.proto-select{
  background:var(--surface2);border:1px solid var(--border2);
  color:var(--text);font-family:'Inter',sans-serif;
  font-size:13px;font-weight:500;
  padding:7px 30px 7px 12px;border-radius:8px;
  cursor:pointer;outline:none;appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='7'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%236699ff'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 10px center;
  flex:1;max-width:420px;transition:border-color .15s;
}
.proto-select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(102,153,255,.12);}
.proto-select option{background:var(--surface2);}
[data-theme="light"] .proto-select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='7'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%232244c0'/%3E%3C/svg%3E");
}
.tls-ver-sel{max-width:260px;font-size:12px;}
.mode-select{max-width:160px;}

/* TLS + TEAP sub-selectors */
.tls-sub{display:none;align-items:center;gap:8px;}
.tls-sub.show{display:flex;}

.ctrl-row{display:flex;gap:6px;margin-left:auto;align-items:center;}
.ctrl-btn{
  font-family:'Space Mono',monospace;font-size:10px;padding:5px 11px;
  border-radius:6px;border:1px solid var(--border2);
  background:var(--surface2);color:var(--text2);cursor:pointer;
  text-transform:uppercase;letter-spacing:.05em;transition:all .15s;
}
.ctrl-btn:hover{border-color:var(--accent);color:var(--accent);}

/* Phase E — cross-mode contextual link pills */
.ctx-link{
  font-family:'Space Mono',monospace;font-size:10px;font-weight:700;
  padding:5px 11px;border-radius:6px;
  border:1px solid var(--accent);
  background:rgba(102,153,255,.08);color:var(--accent);
  text-decoration:none;letter-spacing:.05em;
  text-transform:uppercase;transition:all .15s;white-space:nowrap;
}
.ctx-link:hover{background:rgba(102,153,255,.2);}
.ctx-link-back{
  border-color:var(--text3);
  background:rgba(102,153,255,.04);color:var(--text2);
}
.ctx-link-back:hover{border-color:var(--accent);color:var(--accent);background:rgba(102,153,255,.1);}

/* ════════════════════════════════════════════════════════════════════
   COMING SOON / LANDING overlays
   ════════════════════════════════════════════════════════════════════ */
.coming-soon{
  display:none;position:fixed;inset:96px 0 0 0;
  background:rgba(17,25,35,.97);z-index:90;
  align-items:center;justify-content:center;flex-direction:column;gap:14px;
}
.coming-soon.show{display:flex;}
.coming-soon h2{font-size:26px;font-weight:700;color:var(--text2);letter-spacing:-.02em;}
.coming-soon p{font-family:'Space Mono',monospace;font-size:13px;color:var(--text3);}
[data-theme="light"] .coming-soon{background:rgba(244,246,252,.97);}

/* LANDING PANEL */
.landing-panel{display:none;position:fixed;inset:96px 0 0 0;background:var(--bg);z-index:89;overflow-y:auto;}
.landing-panel.show{display:block;}
.landing-inner{max-width:720px;margin:0 auto;padding:52px 40px 100px;}

.landing-eyebrow{
  font-family:'Space Mono',monospace;font-size:10px;font-weight:700;
  text-transform:uppercase;letter-spacing:.14em;color:var(--accent);
  margin-bottom:12px;
}
.landing-title{
  font-family:'Inter',sans-serif;font-size:32px;font-weight:700;
  color:var(--text);letter-spacing:-.03em;line-height:1.2;margin-bottom:6px;
}
.landing-title span{color:var(--accent);}
.landing-subtitle{
  font-family:'Space Mono',monospace;font-size:11px;color:var(--text3);
  letter-spacing:.06em;text-transform:uppercase;margin-bottom:24px;
}
.landing-desc{font-size:15px;color:var(--text2);line-height:1.75;max-width:600px;}

.landing-how{
  background:var(--surface);border:1px solid var(--border);
  border-radius:12px;padding:24px 28px;margin-top:32px;
}
.landing-section-title{
  font-family:'Space Mono',monospace;font-size:10px;font-weight:700;
  text-transform:uppercase;letter-spacing:.12em;color:var(--accent);margin-bottom:16px;
}
.landing-how-list{list-style:none;display:flex;flex-direction:column;gap:12px;}
.landing-how-list li{
  font-size:14px;color:var(--text2);padding-left:24px;position:relative;line-height:1.6;
}
.landing-how-list li::before{
  content:'→';position:absolute;left:0;color:var(--accent);
  font-family:'Space Mono',monospace;font-size:12px;top:1px;
}
.landing-how-list li strong{color:var(--text);font-weight:600;}

.landing-sep{height:1px;background:var(--border);margin:36px 0;}

.landing-releases{display:flex;flex-direction:column;gap:12px;}
.release-block{
  background:var(--surface);border:1px solid var(--border);
  border-radius:10px;padding:18px 22px;
}
.release-ver{
  font-family:'Space Mono',monospace;font-size:13px;font-weight:700;
  color:var(--accent);margin-bottom:3px;
}
.release-date{font-family:'Space Mono',monospace;font-size:10px;color:var(--text3);margin-bottom:14px;}
.release-notes-list{list-style:none;display:flex;flex-direction:column;gap:6px;}
.release-notes-list li{
  font-family:'Space Mono',monospace;font-size:11px;color:var(--text2);
  padding-left:18px;position:relative;line-height:1.65;
}
.release-notes-list li::before{content:'·';position:absolute;left:6px;color:var(--text3);}

.landing-feedback-desc{font-size:14px;color:var(--text2);margin-bottom:16px;line-height:1.7;}
.landing-form{display:flex;flex-direction:column;gap:10px;}
.landing-textarea{
  background:var(--surface);border:1px solid var(--border2);color:var(--text);
  font-family:'Inter',sans-serif;font-size:13px;
  padding:12px 14px;border-radius:8px;resize:vertical;min-height:120px;
  outline:none;line-height:1.65;transition:border-color .15s;
}
.landing-textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(102,153,255,.1);}
.landing-textarea::placeholder{color:var(--text3);}
.landing-submit{
  align-self:flex-end;font-family:'Space Mono',monospace;font-size:11px;font-weight:700;
  padding:9px 22px;border-radius:8px;border:1px solid var(--accent);
  background:rgba(102,153,255,.12);color:var(--accent);cursor:pointer;
  letter-spacing:.06em;transition:all .15s;text-transform:uppercase;
}
.landing-submit:hover{background:rgba(102,153,255,.22);}

/* ════════════════════════════════════════════════════════════════════
   MAIN LAYOUT — Model A (corrected)
   1. Sticky node header (full width, always visible)
   2. Arrow pane — fixed height, scrolls independently (overflow-y:auto)
   3. Drag handle — row-resize, between arrow pane and detail pane
   4. Detail pane — flex:1, scrolls independently (overflow-y:auto)
   ════════════════════════════════════════════════════════════════════ */
.main{
  position:relative;z-index:1;
  display:flex;flex-direction:column;
  height:calc(100vh - 96px);
  overflow:hidden;
}

/* ── STICKY NODE HEADER ── */
.diag-hdr-wrap{
  position:-webkit-sticky;position:sticky;top:0;z-index:20;
  background:var(--bg);
  border-bottom:1px solid var(--border);
  box-shadow:0 2px 8px rgba(0,0,0,.18);
  flex-shrink:0;
  overflow-x:hidden; /* node header does not scroll — SVG scales to fit */
  overflow-y:hidden;
}

/* ── ARROW PANE ── */
/* Fixed height (set by drag handle via JS min-height on .diagram-area wrapper).
   Scrolls vertically if the SVG body is taller than the pane. */
.diagram-area{
  flex-shrink:0;
  overflow-y:auto;
  overflow-x:hidden; /* SVG scales to container width — no horizontal scroll */
  background:var(--bg);
  min-height:180px; /* default; JS overrides via drag */
  max-height:480px;
}
.diagram-area::-webkit-scrollbar{width:3px;}
.diagram-area::-webkit-scrollbar-thumb{background:var(--border2);}

/* ── DRAG HANDLE — between arrow pane and detail pane ── */
.drag-handle{
  height:8px;width:100%;flex-shrink:0;
  cursor:row-resize;
  background:var(--border);
  border-top:1px solid var(--border2);
  border-bottom:1px solid var(--border2);
  position:relative;transition:background .15s;z-index:10;
}
.drag-handle:hover,.drag-handle.dragging{background:var(--accent);}
.drag-handle::after{
  content:'';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:40px;height:2px;border-radius:1px;
  background:rgba(255,255,255,.15);pointer-events:none;
}
.drag-handle:hover::after,.drag-handle.dragging::after{background:rgba(255,255,255,.35);}
/* Amber indicator when handle is at either extreme (arrow pane or detail pane fully collapsed) */
.drag-handle.at-top,.drag-handle.at-bottom{background:#ffb432;border-color:#ffb432;}
.drag-handle.at-top::after,.drag-handle.at-bottom::after{background:rgba(255,255,255,.5);}

/* ── DETAIL PANE (timeline) ── */
/* Takes remaining height, scrolls independently. */
.scroll-region{
  flex:1;
  overflow-y:auto;
  overflow-x:hidden;
  -webkit-overflow-scrolling:touch;
  min-height:0;
}
.scroll-region::-webkit-scrollbar{width:4px;}
.scroll-region::-webkit-scrollbar-track{background:var(--bg);}
.scroll-region::-webkit-scrollbar-thumb{background:var(--border2);border-radius:2px;}

/* Timeline sits inside scroll-region — no min-width constraint */
.timeline{
  width:100%;
  padding-bottom:60px;
}

/* ════════════════════════════════════════════════════════════════════
   LEGEND
   ════════════════════════════════════════════════════════════════════ */
.legend{
  display:flex;gap:14px;padding:10px 20px;
  border-bottom:1px solid var(--border);flex-wrap:wrap;
  background:var(--surface);
}
.legend-item{
  display:flex;align-items:center;gap:6px;
  font-family:'Space Mono',monospace;font-size:10px;color:var(--text2);
  cursor:pointer;transition:color .15s;user-select:none;
}
.legend-item:hover{color:var(--text);}
.leg-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0;}
.legend-sep{width:1px;background:var(--border2);align-self:stretch;margin:0 4px;}
.leg-dash{width:28px;height:2px;}

/* TAG LEGEND ROW */
.tag-legend-row{
  display:flex;gap:5px;padding:7px 20px;
  border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:center;
  background:var(--surface);
}

/* ════════════════════════════════════════════════════════════════════
   PHASE BLOCKS
   ════════════════════════════════════════════════════════════════════ */
.phase-block{border-left:3px solid transparent;margin-bottom:2px;}
.phase-hdr{
  display:flex;align-items:center;gap:10px;padding:13px 20px 13px 17px;
  cursor:pointer;user-select:none;
  position:-webkit-sticky;position:sticky;top:0;z-index:5;
  background:var(--phase-sticky-bg);
  border-bottom:1px solid var(--border);
  transition:background .15s;
}
.phase-hdr:hover{background:var(--surface2);}
.phase-dot{width:9px;height:9px;border-radius:50%;flex-shrink:0;}
.phase-name{
  font-family:'Inter',sans-serif;font-weight:700;font-size:13px;
  letter-spacing:.01em;flex:1;
}
.phase-count{
  font-family:'Space Mono',monospace;font-size:10px;color:var(--text3);
  padding:2px 8px;background:var(--surface2);border-radius:20px;
  border:1px solid var(--border);
}
.phase-chev{color:var(--text3);transition:transform .2s;font-size:14px;line-height:1;}
.phase-hdr.open .phase-chev{transform:rotate(90deg);}
.phase-body{display:none;}
.phase-body.open{display:block;}
/* FIX: space between phase header and first frame */
.phase-body.open .msg-row:first-child{margin-top:6px;}

/* ════════════════════════════════════════════════════════════════════
   MESSAGE ROWS
   ════════════════════════════════════════════════════════════════════ */
.msg-row{
  border-bottom:1px solid var(--border);cursor:pointer;
  transition:background .12s;border-left:3px solid transparent;
}
.msg-row:hover{background:var(--surface2);}
.msg-row.open{background:var(--surface3);}
.msg-top{display:flex;align-items:center;gap:10px;padding:10px 20px 10px 17px;}
.msg-num{
  font-family:'Space Mono',monospace;font-size:10px;font-weight:700;
  min-width:22px;height:22px;border-radius:6px;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;color:#0a0d14;padding:0 3px;
}
.msg-tw{flex:1;min-width:0;}
.msg-title{
  font-family:'Inter',sans-serif;font-size:13px;font-weight:600;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  letter-spacing:-.01em;
}
.msg-tags{display:flex;gap:3px;margin-top:5px;flex-wrap:wrap;align-items:center;}
.msg-dir{
  font-family:'Space Mono',monospace;font-size:10px;color:var(--text2);
  white-space:nowrap;text-align:right;flex-shrink:0;max-width:200px;
  overflow:hidden;text-overflow:ellipsis;
}
.msg-chev{color:var(--text2);font-size:14px;flex-shrink:0;transition:transform .2s;}
.msg-row.open .msg-chev{transform:rotate(90deg);}

/* ════════════════════════════════════════════════════════════════════
   TAGS
   ════════════════════════════════════════════════════════════════════ */
.tag{
  font-family:'Space Mono',monospace;font-size:10px;
  padding:2px 7px;border-radius:20px;
  border:1px solid var(--border2);
  color:var(--text2);
  background:rgba(80,112,160,.07);
}
.tag-pre-auth    {border-color:rgba(255,170,85,.55);  color:var(--orange); background:rgba(255,170,85,.13);}
.tag-uncontrolled{border-color:rgba(255,221,102,.55); color:var(--yellow); background:rgba(255,221,102,.12);}
.tag-controlled  {border-color:rgba(68,204,136,.55);  color:var(--green);  background:rgba(68,204,136,.12);}
.tag-ack   {border-color:rgba(68,204,136,.5);  color:var(--green); background:rgba(68,204,136,.11);}
.tag-noack {border-color:rgba(255,102,102,.5); color:var(--red);   background:rgba(255,102,102,.11);}
.tag-proto {border-color:rgba(102,153,255,.5); color:var(--accent);background:rgba(102,153,255,.11);}
.tag-l4    {border-color:rgba(153,119,255,.5); color:var(--purple);background:rgba(153,119,255,.11);}
.tag-na    {border-color:transparent;color:var(--tag-na-color);opacity:.5;}
.tag.wireless{border-color:rgba(102,153,255,.4);color:var(--accent);background:rgba(102,153,255,.08);}
.tag.wired  {border-color:rgba(68,204,136,.4); color:var(--green); background:rgba(68,204,136,.08);}
.tag.optional{border-color:rgba(255,221,102,.4);color:var(--yellow);background:rgba(255,221,102,.08);font-style:italic;}
.tag.wpa3-cert{border-color:rgba(255,102,102,.6);color:var(--red);background:rgba(255,102,102,.13);font-weight:700;}

/* ── TAG TOOLTIPS (CSS Option B — data-tip attribute) ────────────── */
.tag[data-tip]{
  position:relative;
  cursor:default;
}
.tag[data-tip]::after{
  content:attr(data-tip);
  position:absolute;
  bottom:calc(100% + 8px);
  left:50%;
  transform:translateX(-50%);
  background:var(--surface3);
  border:1px solid var(--border);
  color:var(--text);
  font-family:'Inter',sans-serif;
  font-size:11px;
  font-style:normal;
  font-weight:400;
  line-height:1.55;
  padding:6px 10px;
  border-radius:6px;
  max-width:260px;
  width:max-content;
  white-space:normal;
  text-align:left;
  z-index:9000;
  pointer-events:none;
  opacity:0;
  transition:opacity .15s ease;
  box-shadow:0 4px 18px rgba(0,0,0,.4);
}
.tag[data-tip]::before{
  content:'';
  position:absolute;
  bottom:calc(100% + 2px);
  left:50%;
  transform:translateX(-50%);
  width:0;height:0;
  border-style:solid;
  border-width:6px 6px 0;
  border-color:var(--border) transparent transparent;
  z-index:9001;
  pointer-events:none;
  opacity:0;
  transition:opacity .15s ease;
}
.tag[data-tip]:hover::after,
.tag[data-tip]:hover::before{ opacity:1; }

/* ════════════════════════════════════════════════════════════════════
   MESSAGE DETAIL
   ════════════════════════════════════════════════════════════════════ */
.msg-detail{display:none;padding:4px 20px 16px 48px;}
.msg-row.open .msg-detail{display:block;}
.msg-summary-text{
  font-family:'Inter',sans-serif;font-size:14px;color:var(--text2);
  margin-bottom:10px;line-height:1.7;
}
.roles-row{display:flex;gap:5px;flex-wrap:wrap;margin-bottom:10px;}
.rbadge{
  font-family:'Space Mono',monospace;font-size:11px;
  padding:2px 8px;border-radius:20px;border:1px solid var(--border2);
}
.rbadge.sender  {border-color:var(--accent);color:var(--accent);background:rgba(102,153,255,.07);}
.rbadge.receiver{border-color:var(--orange);color:var(--orange);background:rgba(255,170,85,.07);}
.rbadge.relay   {border-color:var(--yellow);color:var(--yellow);background:rgba(255,221,102,.07);}
.rbadge.other   {color:var(--text3);}

.medium-badge{
  font-family:'Space Mono',monospace;font-size:11px;padding:2px 9px;
  border-radius:20px;margin-bottom:8px;display:inline-block;
}
.medium-badge.wireless{background:rgba(102,153,255,.1);border:1px solid rgba(102,153,255,.3);color:var(--accent);}
.medium-badge.wired   {background:rgba(68,204,136,.1); border:1px solid rgba(68,204,136,.3); color:var(--green);}
.medium-badge.both    {background:rgba(255,221,102,.08);border:1px solid rgba(255,221,102,.3);color:var(--yellow);}

.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:8px;}
.dc{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:10px 13px;}
.dc.full{grid-column:1/-1;}
.dc-title{
  font-family:'Space Mono',monospace;font-size:10px;font-weight:700;
  text-transform:uppercase;letter-spacing:.1em;color:var(--text3);margin-bottom:7px;
}
.dtable{width:100%;border-collapse:collapse;font-family:'Space Mono',monospace;font-size:11px;}
.dtable td{padding:3px 0;vertical-align:top;}
.dtable td:first-child{color:var(--text3);width:140px;padding-right:10px;white-space:nowrap;}
.dtable td:last-child{color:var(--text);line-height:1.6;}

.key-box{
  background:var(--key-bg);border:1px solid var(--key-border);
  border-radius:8px;padding:8px 11px;margin-top:5px;
  font-family:'Space Mono',monospace;font-size:11px;line-height:1.8;
}
.kn{color:var(--yellow);font-weight:700;display:block;}
.kd{color:var(--text2);display:block;white-space:pre-wrap;}
.ku{color:var(--text3);font-style:italic;display:block;}

.expert-box{
  background:var(--expert-bg);border:1px solid var(--border);border-radius:8px;
  padding:9px 12px;font-family:'Space Mono',monospace;font-size:11px;
  line-height:1.85;color:var(--text2);white-space:pre-wrap;
}

.cert-box{
  background:var(--cert-bg);border:1px solid var(--cert-border);border-radius:8px;
  padding:9px 12px;margin-top:5px;font-family:'Space Mono',monospace;
  font-size:11px;line-height:1.9;
}
.cert-field{color:var(--text3);}
.cert-val{color:#c9c0ff;}

/* ── PKI Trust Chain card ── */
.pki-card{border-color:rgba(153,119,255,.3)!important;background:var(--cert-bg)!important;}
.pki-chain{display:flex;flex-direction:column;gap:0;margin:8px 0;}
.pki-step{
  display:flex;gap:10px;align-items:flex-start;
  background:rgba(153,119,255,.05);border:1px solid rgba(153,119,255,.14);
  border-radius:8px;padding:9px 11px;
}
.pki-step-leaf{border-color:rgba(153,119,255,.28);background:rgba(153,119,255,.09);}
.pki-step-icon{font-size:16px;flex-shrink:0;line-height:1.4;}
.pki-step-body{flex:1;font-family:'Space Mono',monospace;font-size:11px;}
.pki-step-title{color:#c9c0ff;font-weight:700;margin-bottom:2px;}
.pki-step-sub{color:var(--text3);font-weight:400;font-size:10px;}
.pki-step-detail{color:var(--text2);line-height:1.6;white-space:pre-wrap;}
.pki-arrow{text-align:center;color:rgba(153,119,255,.4);font-size:14px;line-height:1.2;padding:2px 0;}
.pki-validation{margin-top:10px;padding:9px 11px;background:rgba(255,170,85,.06);border:1px solid rgba(255,170,85,.22);border-radius:8px;}
.pki-val-title{font-family:'Space Mono',monospace;font-size:11px;font-weight:700;color:var(--orange);margin-bottom:5px;}
.pki-wpa3-badge{
  display:inline-block;font-size:10px;padding:1px 8px;border-radius:20px;
  background:rgba(255,102,102,.12);border:1px solid rgba(255,102,102,.35);
  color:var(--red);margin-left:8px;font-weight:700;vertical-align:middle;
}
.pki-footnote{margin-top:8px;padding:8px 11px;background:rgba(102,153,255,.04);border:1px solid rgba(102,153,255,.14);border-radius:8px;}
.pki-fn-title{font-family:'Space Mono',monospace;font-size:10px;font-weight:700;color:var(--text3);text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px;}
.pki-fn-body{font-family:'Space Mono',monospace;font-size:11px;color:var(--text2);line-height:1.7;white-space:pre-wrap;}

.ref-box{
  background:var(--ref-bg);border:1px solid var(--ref-border);border-radius:8px;
  padding:8px 12px;margin-top:7px;font-family:'Space Mono',monospace;
  font-size:11px;line-height:1.85;color:var(--ref-text);
}
.ref-box strong{color:var(--ref-strong);}
.ref-link{
  color:var(--ref-strong);text-decoration:none;
  border-bottom:1px solid rgba(153,119,255,.3);
  transition:border-color .15s, color .15s;
  white-space:nowrap;
}
.ref-link:hover{color:var(--accent);border-bottom-color:var(--accent);}
.ref-paywall{color:var(--ref-strong);}
.ref-lock{
  font-size:9px;margin-left:3px;opacity:.65;
  vertical-align:middle;text-decoration:none;
  border-bottom:none!important;
}
.ref-link:hover .ref-lock{opacity:1;}

.optional-note{
  background:var(--opt-bg);border:1px solid var(--opt-border);border-radius:8px;
  padding:7px 11px;margin-top:6px;font-family:'Space Mono',monospace;
  font-size:11px;color:rgba(255,221,102,.7);line-height:1.7;
}
.optional-note strong{color:var(--yellow);}

/* ════════════════════════════════════════════════════════════════════
   FOOTER — sticky at bottom
   ════════════════════════════════════════════════════════════════════ */
.site-footer{
  position:fixed;bottom:0;left:0;right:0;z-index:50;
  background:var(--surface);border-top:1px solid var(--border);
  padding:10px 24px;display:flex;align-items:center;justify-content:space-between;
  font-family:'Space Mono',monospace;font-size:10px;color:var(--text2);
  flex-wrap:wrap;gap:8px;
  box-shadow:0 -2px 12px rgba(0,0,0,.15);
}
.footer-brand{color:var(--accent);font-weight:700;letter-spacing:.04em;}
.footer-sep{opacity:.4;margin:0 5px;}
.footer-right{display:flex;gap:14px;align-items:center;}
.footer-feedback{
  color:var(--text2);text-decoration:none;transition:color .15s;cursor:pointer;
  background:none;border:none;font-family:'Space Mono',monospace;font-size:10px;padding:0;
}
.footer-feedback:hover{color:var(--accent);}
.footer-license{
  color:var(--accent);text-decoration:none;opacity:.75;
  font-family:'Space Mono',monospace;font-size:10px;
  border-bottom:1px solid rgba(102,153,255,.3);transition:opacity .15s;
}
.footer-license:hover{opacity:1;border-bottom-color:var(--accent);}

/* ════════════════════════════════════════════════════════════════════
   SVG NODE TOOLTIP
   ════════════════════════════════════════════════════════════════════ */
.svg-node-ghost{cursor:help;position:relative;}
.svg-tooltip{
  position:fixed;background:var(--surface3);border:1px solid var(--border2);
  border-radius:8px;padding:7px 11px;font-family:'Space Mono',monospace;font-size:10px;
  color:var(--text2);max-width:220px;line-height:1.6;z-index:200;pointer-events:none;
  box-shadow:0 4px 18px rgba(0,0,0,.4);
}

/* ════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════════════ */
@media (max-width:1100px){.detail-grid{grid-template-columns:1fr;}}

/* ════════════════════════════════════════════════════════════════════
   TUNNEL ENCRYPTED — tag, hatched row, detail card
   ════════════════════════════════════════════════════════════════════ */
.tag-tunnel{
  border-color:rgba(255,221,102,.55);color:var(--yellow);
  background:rgba(255,221,102,.08);font-weight:700;
}
/* Diagonal hatch on rows that carry inside-tunnel frames */
.msg-row.tls-tunnel-row{
  background-image:repeating-linear-gradient(
    45deg,transparent,transparent 5px,
    rgba(255,221,102,.025) 5px,rgba(255,221,102,.025) 10px);
}
.msg-row.tls-tunnel-row:hover{
  background-color:var(--surface2);
  background-image:repeating-linear-gradient(
    45deg,transparent,transparent 5px,
    rgba(255,221,102,.04) 5px,rgba(255,221,102,.04) 10px);
}
.msg-row.tls-tunnel-row.open{
  background-color:var(--surface3);
  background-image:repeating-linear-gradient(
    45deg,transparent,transparent 5px,
    rgba(255,221,102,.04) 5px,rgba(255,221,102,.04) 10px);
}
/* Tunnel encryption detail card */
.tunnel-card{border-color:rgba(255,221,102,.28)!important;background:rgba(255,221,102,.03)!important;}
.tunnel-layers{display:flex;flex-direction:column;gap:4px;margin-bottom:10px;}
.tunnel-layer{
  display:flex;gap:8px;align-items:flex-start;
  padding:6px 9px;border-radius:6px;
  background:rgba(255,221,102,.04);border:1px solid rgba(255,221,102,.14);
}
.tunnel-layer-num{font-family:'Space Mono',monospace;font-size:13px;color:var(--yellow);flex-shrink:0;line-height:1.4;}
.tunnel-layer-body{font-family:'Space Mono',monospace;font-size:11px;color:var(--text2);line-height:1.6;}
.tunnel-endpoints{
  font-family:'Space Mono',monospace;font-size:11px;color:var(--text3);
  margin-bottom:4px;line-height:1.6;
}
.tunnel-payload{
  font-family:'Space Mono',monospace;font-size:11px;color:var(--text2);
  padding:6px 9px;margin-bottom:10px;
  background:rgba(255,221,102,.04);border:1px solid rgba(255,221,102,.14);
  border-radius:6px;line-height:1.6;
}
.tunnel-vis-row{
  display:flex;gap:8px;padding:3px 0;
  border-bottom:1px solid rgba(255,221,102,.07);font-family:'Space Mono',monospace;font-size:11px;
}
.tunnel-vis-key{color:var(--text3);width:190px;flex-shrink:0;}
.tunnel-vis-val{color:var(--text);line-height:1.5;}
.tunnel-vis-val.enc{color:var(--red);font-style:italic;}
.tunnel-wireshark{
  margin-top:9px;padding:8px 10px;
  background:rgba(102,153,255,.05);border:1px solid rgba(102,153,255,.15);border-radius:6px;
}
.tunnel-ws-label{
  font-family:'Space Mono',monospace;font-size:10px;font-weight:700;
  color:var(--accent);text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px;
}
.tunnel-ws-filter{
  font-family:'Space Mono',monospace;font-size:11px;color:var(--accent);
  background:var(--code-bg);padding:2px 7px;border-radius:4px;
  display:inline-block;margin-bottom:6px;
}
.tunnel-ws-hint{
  font-family:'Space Mono',monospace;font-size:11px;color:var(--text2);
  white-space:pre-wrap;line-height:1.65;
}
/* tenc-* — tunnel encryption card classes used by renderer.js */
.tenc-card{border-color:rgba(255,221,102,.28)!important;background:rgba(255,221,102,.03)!important;}
.tenc-layer-row{display:flex;gap:6px;margin-bottom:8px;flex-wrap:wrap;}
.tenc-layer-box{
  flex:1;min-width:200px;padding:7px 10px;border-radius:6px;
  border:1px solid rgba(255,221,102,.16);background:rgba(255,221,102,.04);
}
.tenc-layer-outer{border-color:rgba(102,153,255,.2);background:rgba(102,153,255,.04);}
.tenc-layer-inner{border-color:rgba(255,221,102,.2);background:rgba(255,221,102,.04);}
.tenc-layer-label{
  font-family:'Space Mono',monospace;font-size:10px;font-weight:700;
  color:var(--yellow);text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px;
}
.tenc-layer-outer .tenc-layer-label{color:var(--accent);}
.tenc-layer-detail{font-family:'Space Mono',monospace;font-size:11px;color:var(--text2);line-height:1.6;}
.tenc-endpoints{
  font-family:'Space Mono',monospace;font-size:11px;color:var(--text3);
  margin-bottom:8px;white-space:pre-wrap;line-height:1.6;
}
.tenc-visible{margin-bottom:8px;}
.tenc-visible-title{
  font-family:'Space Mono',monospace;font-size:10px;font-weight:700;
  color:var(--green);text-transform:uppercase;letter-spacing:.08em;margin-bottom:6px;
}
.tenc-filter{
  padding:7px 10px;background:rgba(102,153,255,.05);
  border:1px solid rgba(102,153,255,.15);border-radius:6px;
}
.tenc-filter-title{
  font-family:'Space Mono',monospace;font-size:10px;font-weight:700;
  color:var(--accent);text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px;
}
.tenc-filter-body{
  font-family:'Space Mono',monospace;font-size:11px;color:var(--text2);
  white-space:pre-wrap;line-height:1.65;
}

/* ════════════════════════════════════════════════════════════════════
   TUNNEL ENCRYPTED FRAMES
   Used for Phase 2 inner method frames carried inside a TLS tunnel.
   Note: EAPOL auth frames are NOT 802.11 CCMP-128 encrypted (no TK yet).
   These frames have ONE layer of encryption: the TLS application tunnel.
   ════════════════════════════════════════════════════════════════════ */
.tag.tunnel-enc{
  border-color:rgba(255,180,50,.5);color:#ffb432;
  background:rgba(255,180,50,.08);font-weight:700;
}
/* Subtle amber diagonal stripe — visually distinct without being distracting */
.msg-row.tunnel-enc{
  background-image:repeating-linear-gradient(
    45deg,transparent,transparent 5px,
    rgba(255,180,50,.035) 5px,rgba(255,180,50,.035) 10px
  );
}
.msg-row.tunnel-enc:hover{background-color:var(--surface2);}
.msg-row.tunnel-enc.open{background-color:var(--surface3);background-image:none;}
[data-theme="light"] .msg-row.tunnel-enc{
  background-image:repeating-linear-gradient(
    45deg,transparent,transparent 5px,
    rgba(180,110,0,.045) 5px,rgba(180,110,0,.045) 10px
  );
}

/* Tunnel encryption detail card */
.tenc-card{border-color:rgba(255,180,50,.28)!important;background:rgba(255,180,50,.03)!important;}
.tenc-layer-row{display:flex;gap:8px;margin-bottom:8px;flex-wrap:wrap;}
.tenc-layer-box{flex:1;min-width:180px;border-radius:6px;padding:8px 10px;}
.tenc-layer-outer{background:rgba(128,128,128,.07);border:1px solid rgba(128,128,128,.22);}
.tenc-layer-inner{background:rgba(255,180,50,.07);border:1px solid rgba(255,180,50,.22);}
.tenc-layer-label{font-family:'Space Mono',monospace;font-size:9px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;margin-bottom:4px;}
.tenc-layer-outer .tenc-layer-label{color:var(--text3);}
.tenc-layer-inner .tenc-layer-label{color:#ffb432;}
.tenc-layer-detail{font-family:'Space Mono',monospace;font-size:11px;color:var(--text2);line-height:1.7;white-space:pre-wrap;}
.tenc-endpoints{background:rgba(102,153,255,.05);border:1px solid rgba(102,153,255,.18);border-radius:6px;padding:7px 10px;margin-bottom:6px;font-family:'Space Mono',monospace;font-size:11px;color:var(--text2);line-height:1.7;white-space:pre-wrap;}
.tenc-visible{background:rgba(68,204,136,.05);border:1px solid rgba(68,204,136,.2);border-radius:6px;padding:8px 10px;margin-bottom:6px;}
.tenc-visible-title{font-family:'Space Mono',monospace;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--green);margin-bottom:6px;}
.tenc-filter{background:rgba(255,180,50,.04);border:1px solid rgba(255,180,50,.18);border-radius:6px;padding:7px 10px;}
.tenc-filter-title{font-family:'Space Mono',monospace;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#ffb432;margin-bottom:4px;}
.tenc-filter-body{font-family:'Space Mono',monospace;font-size:11px;color:var(--text2);line-height:1.7;white-space:pre-wrap;}

/* MOBILE TAB BAR */
.mob-tabs{
  display:none;position:fixed;bottom:0;left:0;right:0;z-index:200;
  background:var(--surface);border-top:1px solid var(--border);
  display:flex;height:52px;
}
.mob-tab{
  flex:1;display:flex;align-items:center;justify-content:center;gap:6px;
  font-family:'Space Mono',monospace;font-size:11px;font-weight:700;
  letter-spacing:.04em;color:var(--text3);cursor:pointer;border:none;
  background:transparent;text-transform:uppercase;transition:color .15s;
}
.mob-tab.active{color:var(--accent);border-top:2px solid var(--accent);}
.mob-tab svg{width:16px;height:16px;fill:currentColor;}

@media (max-width:860px){
  .mob-tabs{display:flex;}
  .site-nav{height:40px;padding:0 14px;}
  .nav-links{display:none;}
  .main{height:calc(100vh - 40px - 52px - 52px);}
  .hdr{top:40px;flex-wrap:wrap;gap:8px;padding:8px 14px;}
  .hdr-brand{min-width:0;}
  .proto-select{max-width:100%;width:100%;font-size:12px;}
  .proto-label{display:none;}
  .ctrl-row{gap:4px;}
  .ctrl-btn{display:none;}
  .tls-sub{width:100%;}
  .tls-ver-sel{max-width:100%;}
  /* Arrow pane: hidden by default on mobile, full-height when shown */
  .diagram-area{display:none!important;height:100%!important;max-height:none!important;}
  .diagram-area.mob-visible{display:block!important;}
  /* Hide drag handle on mobile — JS also sets display:none */
  .drag-handle{display:none!important;}
  /* Detail pane takes full height on mobile */
  .scroll-region{flex:1;}
  .scroll-region.mob-hidden{display:none;}
  .legend{overflow-x:auto;flex-wrap:nowrap;padding:8px 14px;gap:10px;}
  .legend-sep{display:none;}
  .phase-hdr{padding:10px 14px;}
  .msg-top{padding:9px 14px;}
  .msg-dir{display:none;}
  .msg-detail{padding:4px 14px 14px 38px;}
  .detail-grid{grid-template-columns:1fr !important;}
  .landing-inner{padding:32px 20px 80px;}
  .landing-title{font-size:24px;}
  .site-footer{display:none;}
  .coming-soon{inset:92px 0 0 0;}
  .landing-panel{inset:92px 0 0 0;}
}
@media (max-width:480px){
  .hdr-brand-url{font-size:13px;}
  .msg-title{font-size:12px;}
  .nav-brand{font-size:11px;}
}