/* #app-wrapper is the flex child between #zv-topbar and #zv-footer; it
   must size purely from flex:1 (see line ~182).  Giving it height:100%
   here made it 100% of the body, pushing the footer off-screen and
   letting the canvas overrun the footer (clipping the X caption). */
#app-wrapper{
  width:100%;
  max-width:100vw;
  overflow:hidden;
}
#plot-container{
  width:100%;
  height:100%;
  max-width:100vw;
  max-height:100dvh;
  overflow:hidden;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}

/* ============================================================
   fonts.css -- self-hosted TTF webfonts for the Zvingo editor
   ------------------------------------------------------------
   Files expected in:  fonts/ (relative to index.php)
   Format:             TTF (truetype)
   Loading strategy:   font-display: swap -- show fallback
                       immediately, swap to real font when loaded
   ============================================================ */

/* ----- Monospace (variable fonts) ----- */

@font-face {
  font-family: 'JetBrains Mono';
  src: url('fonts/JetBrainsMono-VariableFont.ttf') format('truetype-variations'),
       url('fonts/JetBrainsMono-VariableFont.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Roboto Mono';
  src: url('fonts/RobotoMono-VariableFont.ttf') format('truetype-variations'),
       url('fonts/RobotoMono-VariableFont.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* ----- Monospace (single-weight TTFs) -----
   Apple's classic terminal fonts, now self-hosted so they work on
   every OS, not just macOS.  Browsers synthesise bold for keywords
   from the regular face. */

@font-face {
  font-family: 'Menlo';
  src: url('fonts/Menlo-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Monaco';
  src: url('fonts/Monaco.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ----- Sans-serif (variable fonts) ----- */

@font-face {
  font-family: 'Roboto Flex';
  src: url('fonts/RobotoFlex-VariableFont.ttf') format('truetype-variations'),
       url('fonts/RobotoFlex-VariableFont.ttf') format('truetype');
  font-weight: 100 1000;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Google Sans Flex';
  src: url('fonts/GoogleSansFlex-VariableFont.ttf') format('truetype-variations'),
       url('fonts/GoogleSansFlex-VariableFont.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* ----- Sans-serif (single-weight TTFs) -----
   Browsers will synthesise bold (font-weight: 600+) from the
   regular face if the user picks one of these and a keyword
   needs to render in bold.  Quality is slightly lower than a
   real bold face but still legible. */

@font-face {
  font-family: 'Fira Sans Condensed';
  src: url('fonts/FiraSansCondensed-Thin.ttf') format('truetype');
  font-weight: 100;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Fira Sans Condensed';
  src: url('fonts/FiraSansCondensed-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'IBM Plex Sans';
  src: url('fonts/IBMPlexSans-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'IBM Plex Sans SemiCondensed';
  src: url('fonts/IBMPlexSans_SemiCondensed-Thin.ttf') format('truetype');
  font-weight: 100;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Sans SemiCondensed';
  src: url('fonts/IBMPlexSans_SemiCondensed-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Sans SemiCondensed';
  src: url('fonts/IBMPlexSans_SemiCondensed-Medium.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Mulish';
  src: url('fonts/Mulish-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Ubuntu';
  src: url('fonts/Ubuntu-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ----- Serif (variable font) ----- */

@font-face {
  font-family: 'Noto Serif';
  src: url('fonts/NotoSerif-VariableFont.ttf') format('truetype-variations'),
       url('fonts/NotoSerif-VariableFont.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}


/* -- THEME VARIABLES ------------------------------------------- */
:root{
  --bg:#ffffff;--surface:#ffffff;--surface-hover:#eef1f5;--border:#c4ccd6;
  --text:#1a202c;--text-dim:#475569;--accent:#0284c7;--danger:#dc2626;
  --grid-color:rgba(0,0,0,0.07);--axis-color:#9ca3af;--tick-color:#9ca3af;
  --clear-color:#ffffff;--label-color:#374151;
  --font-mono:'JetBrains Mono','Fira Code','Consolas',monospace;
  --font-ui:'Segoe UI',system-ui,-apple-system,sans-serif;
}
body.light{
  --bg:#ffffff;--surface:#ffffff;--surface-hover:#eef1f5;--border:#c4ccd6;
  --text:#1a202c;--text-dim:#475569;--accent:#0284c7;--danger:#dc2626;
  --grid-color:rgba(0,0,0,0.07);--axis-color:#9ca3af;--tick-color:#9ca3af;
  --clear-color:#ffffff;--label-color:#374151;
}

body{background:var(--bg);color:var(--text);font-family:var(--font-ui);overflow:hidden;height:100vh;height:100dvh;width:100vw;user-select:none;display:flex;flex-direction:column;align-items:stretch;-webkit-tap-highlight-color:transparent}
#top-bar,#app-wrapper{width:100%}
#app-wrapper{position:relative;flex:1;min-height:0;overflow:hidden;background:var(--bg)}
#plot-container{position:absolute;inset:0;touch-action:none;background:var(--bg)}

/* -- TOP BAR --------------------------------------------------- */
#top-bar{
  min-height:42px;background:var(--surface);border-bottom:1px solid var(--border);
  display:flex;align-items:center;padding:6px 10px;gap:8px;z-index:20;flex-shrink:0;
  flex-wrap:wrap;
}
.tb-logo{font-family:var(--font-mono);font-size:12px;font-weight:700;color:var(--accent);letter-spacing:1.5px;text-transform:uppercase;flex-shrink:0}
.tb-logo span{color:var(--text-dim);font-weight:400}
.tb-sep{width:1px;height:18px;background:var(--border);flex-shrink:0}
.tb-badge{font-family:var(--font-mono);font-size:10px;padding:6px 10px;border-radius:6px;flex-shrink:0;cursor:pointer;border:1px solid var(--border);background:var(--surface-hover);color:var(--text-dim);min-height:32px;display:flex;align-items:center}
.tb-badge.trace{color:var(--accent);border-color:var(--accent)}
.tb-group{display:flex;align-items:center;gap:4px;flex-shrink:0}
.tb-label{font-size:10px;color:var(--text-dim);text-transform:uppercase;letter-spacing:0.5px}
.tb-select{background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:6px 8px;font-size:12px;font-family:var(--font-mono);outline:none;cursor:pointer;max-width:100px;min-height:34px}
.tb-select:focus{border-color:var(--accent)}
.tb-pills{display:flex;gap:6px;overflow-x:auto;flex:1;min-width:120px;padding-bottom:2px}
.tb-pills{scrollbar-width:thin;scrollbar-color:var(--border) var(--surface)}
.tb-pills::-webkit-scrollbar{height:8px}
.tb-pills::-webkit-scrollbar-track{background:var(--surface);border-radius:999px}
.tb-pills::-webkit-scrollbar-thumb{background:var(--border);border-radius:999px;border:1px solid var(--surface)}
.tb-pills::-webkit-scrollbar-thumb:hover{background:var(--tick-color)}
.tb-pill{font-family:var(--font-mono);font-size:10px;padding:5px 9px;border-radius:999px;border:1px solid;cursor:pointer;white-space:nowrap;flex-shrink:0}
.tb-pill.hidden{opacity:0.3;text-decoration:line-through}
.tb-btn{background:var(--surface-hover);color:var(--text-dim);border:1px solid var(--border);border-radius:6px;padding:6px 10px;font-size:12px;cursor:pointer;font-family:var(--font-ui);transition:background 0.15s;min-height:32px}
.tb-btn:hover{background:var(--border);color:var(--text)}
.tb-spacer{flex:1}
#tb-settings{display:none}

/* ===== Mk3-1 fixed top bar + footer ===== */
#zv-topbar{
  /* Mk3-138Z661 -- compacted 48 -> 42 (and the figbar 36 -> 32, the footer
     36 -> 32): three stacked bars cost 122px of a phone screen before any
     plot was drawn.  --zv-chrome-top/bottom are measured at runtime in
     canvas.js, so modals follow automatically. */
  display:flex;align-items:center;gap:10px;
  min-height:42px;padding:5px 12px;box-sizing:border-box;
  /* keep brand/buttons clear of the iOS notch (viewport-fit=cover) */
  padding-top:calc(6px + env(safe-area-inset-top, 0px));
  background:var(--surface, #ffffff);
  border-bottom:1px solid var(--border, #d0d5dd);
  z-index:40;
}
.zv-tb-brand{
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  color:var(--accent);letter-spacing:1.5px;text-transform:uppercase;
  flex-shrink:0;user-select:none;
}
.zv-tb-btns{
  /* Mk3-138Z662 -- no horizontal scroll.  It used to be overflow-x:auto with a
     visible scrollbar: an ugly grey bar across the toolbar, and a bad
     affordance besides (buttons just vanish off the edge).  Z661 replaced it
     with a measured "more" menu, so anything that does not fit is moved there
     -- nothing is ever hidden behind a scroll, and the bar stays clean. */
  display:flex;align-items:center;gap:6px;flex:1;min-width:0;
  overflow:hidden;
}
.zv-tb-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:32px;min-width:32px;padding:0 11px;flex-shrink:0;
  background:var(--surface-hover, rgba(0,0,0,.04));
  color:var(--text, #1e293b);
  border:1px solid var(--border, rgba(0,0,0,.12));
  border-radius:8px;cursor:pointer;font-family:var(--font-ui);
  font-size:12px;font-weight:600;line-height:1;
  transition:background .15s, border-color .15s, color .15s;
  -webkit-tap-highlight-color:transparent;
}
.zv-tb-btn svg{display:block;flex-shrink:0}
.zv-tb-btn .zv-tb-btn-label{white-space:nowrap}
.zv-tb-btn:hover{background:var(--border, rgba(0,0,0,.1));color:var(--text)}
.zv-tb-btn.active{border-color:var(--accent);color:var(--accent)}
@media (max-width:720px){
  .zv-tb-btn .zv-tb-btn-label{display:none}  /* icon-only on narrow screens */
  .zv-tb-btn{padding:0 8px}
}
/* Mk3-138Z661 -- the overflow ("more") button and its menu.  See
   setupTopbarOverflow(): whatever does not fit is MOVED here rather than left
   to a horizontal scroll, where buttons vanish with no hint they exist. */
/* Mk3-138Z662 -- the figbar showed a scrollbar too (overflow-x:auto in its
   inline style).  Its eight icons are ~224px and fit even a 380px phone, so
   the scroll was pure decoration -- a grey bar under the toolbar and, on
   desktop, stepper arrows.  Belt and braces: no scrollbar chrome on either
   bar, whatever a browser decides to do. */
#zv-figbar{scrollbar-width:none;-ms-overflow-style:none}
#zv-figbar::-webkit-scrollbar{display:none;height:0}
.zv-tb-btns{scrollbar-width:none;-ms-overflow-style:none}
.zv-tb-btns::-webkit-scrollbar{display:none;height:0}
.zv-tb-more{margin-left:2px}
.zv-tb-more-menu .zv-tb-more-item svg{flex-shrink:0}
.zv-tb-more-menu .zv-tb-more-item:active{background:var(--border,#e2e8f0)}

#zv-footer{
  display:flex;align-items:center;gap:16px;
  height:32px;min-height:32px;padding:3px 14px;box-sizing:border-box;
  /* keep footer links clear of the iOS home indicator (viewport-fit=cover) */
  padding-bottom:calc(4px + env(safe-area-inset-bottom, 0px));
  background:var(--surface, #ffffff);
  border-top:1px solid var(--border, #d0d5dd);
  color:var(--text-dim, #64748b);
  font-family:var(--font-ui);font-size:12px;z-index:40;
}
.zv-ft-brand{
  font-family:var(--font-mono),ui-monospace,monospace;
  font-size:12px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;
  color:var(--accent,#0284c7);user-select:none;flex:0 0 auto;
}
.zv-ft-nav{display:flex;align-items:center;gap:0}
.zv-ft-nav .zv-ft-link:not(:first-child){
  border-left:1px solid var(--border,#e2e8f0);
}
.zv-ft-link{
  background:none;border:0;cursor:pointer;font-family:inherit;font-size:12px;
  color:var(--text-dim, #64748b);padding:3px 12px;line-height:1;
  transition:color .15s;-webkit-tap-highlight-color:transparent;
}
.zv-ft-link{text-decoration:none}
.zv-ft-link:first-child{padding-left:4px}
.zv-ft-link:hover{color:var(--accent,#0284c7)}
.zv-ft-spacer{flex:1}
.zv-ft-copy{color:var(--text-dim, #94a3b8);font-size:11px;user-select:none;letter-spacing:.2px;flex:0 0 auto}
@media (max-width:560px){
  .zv-ft-copy{display:none}
  .zv-ft-brand{display:none}
  #zv-footer{gap:10px;font-size:11px}
  .zv-ft-link{padding:3px 9px}
}

/* -- READOUT --------------------------------------------------- */
#cursor-readout,#probe-readout{position:absolute;bottom:10px;left:10px;background:var(--surface);border:1px solid var(--border);border-radius:8px;font-family:var(--font-mono);font-size:11px;z-index:16;min-width:180px;max-width:440px;width:max-content;cursor:grab;opacity:0.96;backdrop-filter:blur(6px);max-height:40vh;overflow:auto}
#cursor-readout.hidden,#probe-readout.hidden{opacity:0;pointer-events:none}
#cursor-readout.dragging,#probe-readout.dragging{cursor:grabbing}
#cursor-readout.trace-card-free{left:auto;right:auto;bottom:auto;top:auto}
.ro-body{padding:8px 10px}
.ro-hdr{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:9px;text-transform:uppercase;letter-spacing:1px;color:var(--text-dim);margin-bottom:4px;padding-bottom:3px;border-bottom:1px solid var(--border)}
.ro-hdr-title{display:inline-block}
.ro-close{width:18px;height:18px;border-radius:50%;border:none;background:rgba(255,255,255,0.06);color:var(--text-dim);font-size:11px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
.ro-close:hover{background:var(--danger);color:#fff}
.ro-row{display:flex;justify-content:space-between;gap:12px;line-height:1.6;font-size:11px;align-items:baseline}
.ro-lbl{color:var(--text-dim);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1 1 auto;display:flex;align-items:center;gap:4px}.ro-val{color:var(--accent);font-weight:600;flex:0 0 auto;white-space:nowrap;font-variant-numeric:tabular-nums;text-align:right}
.ro-dot{width:5px;height:5px;border-radius:50%;display:inline-block}

/* -- PROBE TOOLTIP --------------------------------------------- */
.pt-x{color:var(--accent);font-weight:600;margin-bottom:1px}.pt-row{display:flex;align-items:center;gap:5px;line-height:1.4}
.pt-dot{width:4px;height:4px;border-radius:50%;display:inline-block;flex-shrink:0}

/* -- AREA SELECT ----------------------------------------------- */
#area-select-overlay{position:absolute;inset:0;z-index:20;cursor:crosshair;display:none}
#area-select-rect{position:absolute;border:2px solid var(--accent);background:rgba(0,229,255,0.08);pointer-events:none;display:none;z-index:21}

/* -- CONTEXT MENU / MOBILE SHEET ------------------------------- */
#context-menu{position:fixed;display:none;background:var(--surface);border:1px solid var(--border);border-radius:10px;min-width:320px;z-index:200;box-shadow:0 12px 40px rgba(0,0,0,0.4);font-size:13px;max-height:82vh;flex-direction:column}
#context-menu.visible{display:flex}
.ctx-dragbar{padding:8px 12px 7px;display:flex;align-items:center;justify-content:space-between;cursor:grab;border-bottom:1px solid var(--border);flex-shrink:0;background:rgba(255,255,255,0.02);border-radius:10px 10px 0 0}
.ctx-dragbar:active{cursor:grabbing}
.ctx-dragbar-title{font-size:10px;text-transform:uppercase;letter-spacing:1.5px;color:var(--text-dim)}
.ctx-close{width:24px;height:24px;border-radius:50%;border:none;background:rgba(255,255,255,0.06);color:var(--text-dim);font-size:13px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.ctx-close:hover{background:var(--danger);color:#fff}
.ctx-body{overflow-y:auto;flex:1;padding:4px 0}
.ctx-body::-webkit-scrollbar{width:4px}.ctx-body::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
.ctx-hdr{padding:7px 14px 4px;font-size:9px;text-transform:uppercase;letter-spacing:1.2px;color:var(--text-dim);opacity:0.7}
.ctx-item{padding:10px 14px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;transition:background 0.1s;font-size:13px;min-height:40px}
.ctx-item:hover{background:var(--surface-hover)}
.ctx-key{display:none !important;}
.ctx-sep{height:1px;background:var(--border);margin:4px 10px}
.ctx-toggle{width:34px;height:18px;border-radius:9px;background:var(--text-dim);position:relative;transition:background 0.2s;flex-shrink:0}
.ctx-toggle.on{background:var(--accent)}
.ctx-toggle::after{content:'';position:absolute;width:14px;height:14px;border-radius:50%;background:#fff;top:2px;left:2px;transition:transform 0.2s;box-shadow:0 1px 2px rgba(0,0,0,.3)}
.ctx-toggle.on::after{transform:translateX(16px)}
.ctx-slider{padding:5px 14px 10px;display:flex;flex-direction:column;gap:4px}
.ctx-slider label{font-size:11px;color:var(--text-dim);display:flex;justify-content:space-between}
.ctx-slider label span{color:var(--accent);font-family:var(--font-mono)}
.ctx-slider input[type=range]{-webkit-appearance:none;width:100%;height:4px;border-radius:2px;background:var(--border);outline:none}
.ctx-slider input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--accent);cursor:pointer;border:3px solid var(--bg)}
.ctx-cfg{padding:4px 14px 8px}
.ctx-cfg-row{display:flex;align-items:center;gap:8px;margin-bottom:7px;font-size:12px;color:var(--text-dim)}
.ctx-cfg-row label{width:48px;flex-shrink:0;font-size:11px}
.ctx-cfg-row select,.ctx-cfg-row input[type=number]{background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:7px 8px;font-size:12px;font-family:var(--font-mono);outline:none;cursor:pointer}
.ctx-cfg-row select{flex:1}.ctx-cfg-row input[type=number]{width:74px}
.ctx-cfg-row input[type=color]{width:34px;height:28px;border:1px solid var(--border);border-radius:6px;background:var(--bg);cursor:pointer;padding:0}
.ctx-cfg-row input[type=color]::-webkit-color-swatch-wrapper{padding:2px}
.ctx-cfg-row input[type=color]::-webkit-color-swatch{border:none;border-radius:4px}
.ctx-cfg-row input[type=range]{flex:1;-webkit-appearance:none;height:4px;border-radius:2px;background:var(--border);outline:none}
.ctx-cfg-row input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--accent);cursor:pointer;border:3px solid var(--bg)}
.ctx-cfg-val{font-family:var(--font-mono);font-size:10px;color:var(--accent);width:24px;text-align:right;flex-shrink:0}
.ctx-advanced{padding:10px 14px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;transition:background 0.1s;color:var(--accent);font-weight:600;font-size:12px}
.ctx-advanced:hover{background:var(--surface-hover)}

/* -- AXIS RANGE INPUTS ----------------------------------------- */
.axis-range-row{display:flex;align-items:center;gap:5px;padding:2px 14px 8px;font-size:10px;color:var(--text-dim);flex-wrap:wrap}
.axis-range-row span{flex-shrink:0}.axis-range-row input{width:72px;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:7px 6px;font-size:11px;font-family:var(--font-mono);outline:none}
.axis-range-row input:focus{border-color:var(--accent)}

/* -- MODAL ------------------------------------------------------ */
.modal-overlay{position:fixed;inset:0;background:transparent;pointer-events:none;z-index:2147483601;display:flex;align-items:center;justify-content:center;padding:calc(var(--zv-chrome-top,74px) + 12px) 18px calc(var(--zv-chrome-bottom,32px) + 12px)}
.modal-overlay > *{pointer-events:auto}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:24px 28px;min-width:360px;max-width:min(92vw,900px);max-height:calc(100dvh - var(--zv-chrome-top,74px) - var(--zv-chrome-bottom,32px) - 36px);overflow:auto;box-shadow:0 20px 60px rgba(0,0,0,0.5)}
.modal.table-modal{width:min(96vw,1100px)}
.modal table{width:100%;border-collapse:collapse;font-size:12px}
.modal th,.modal td{border:1px solid var(--border);padding:6px 8px;text-align:left;white-space:nowrap}
.modal .table-wrap{max-height:min(65vh,700px);overflow:auto;border:1px solid var(--border);border-radius:8px}
.modal .err{color:var(--danger)}
.modal h2{font-size:16px;color:var(--accent);margin-bottom:12px;font-family:var(--font-mono);letter-spacing:1px}
.modal p{font-size:13px;line-height:1.6;color:var(--text);margin-bottom:10px}
.modal-btns{display:flex;gap:8px;margin-top:16px;justify-content:flex-end;flex-wrap:wrap}
.modal-btn{padding:8px 16px;border-radius:7px;border:1px solid var(--border);background:var(--surface-hover);color:var(--text);cursor:pointer;font-size:12px;transition:background 0.15s}
.modal-btn:hover{background:var(--border)}
.modal-btn.primary{background:var(--accent);color:#000;border-color:var(--accent);font-weight:600}
.theme-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 12px;margin-top:12px}
.theme-row{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px;color:var(--text)}
.theme-row input[type=color]{width:42px;height:28px;border:1px solid var(--border);border-radius:6px;background:var(--bg);padding:0;cursor:pointer}
.theme-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}

@media (max-width: 900px){
  #top-bar{
    padding:6px 8px;
    gap:6px;
    align-items:flex-start;
  }
  .tb-logo{font-size:11px;min-height:32px;display:flex;align-items:center}
  .tb-group{order:3;flex:0 1 auto;min-width:0}
  .tb-group .tb-select{width:100%;max-width:140px}
  .tb-pills{order:4;flex:1 1 100%;min-width:100%;padding-top:2px}
  .tb-spacer{display:none}
  #tb-settings{display:inline-flex}
  #tb-help{display:inline-flex}
  .tb-sep{display:none}
  #context-menu{
    left:0 !important;
    right:0 !important;
    bottom:0 !important;
    top:auto !important;
    width:100vw;
    max-height:78vh;
    min-width:0;
    border-radius:16px 16px 0 0;
    border-left:none;
    border-right:none;
    border-bottom:none;
  }
  .ctx-dragbar{
    cursor:default;
    border-radius:16px 16px 0 0;
    position:sticky;
    top:0;
    z-index:1;
  }
  .ctx-dragbar::before{
    content:'';
    position:absolute;
    left:50%;
    transform:translateX(-50%);
    top:6px;
    width:44px;
    height:4px;
    border-radius:999px;
    background:var(--border);
  }
  #cursor-readout,#probe-readout{
    left:12px !important;
    right:auto !important;
    bottom:82px !important;
    top:auto !important;
    max-width:min(340px, calc(100vw - 24px));
    min-width:220px;
    width:auto;
    cursor:grab;
    max-height:36vh;
    overflow:auto;
  }
  #cursor-readout.trace-card-free,#probe-readout.trace-card-free{
    left:auto !important;
    right:auto !important;
    bottom:auto !important;
    top:auto !important;
  }

  .probe-tooltip{display:none}
  .modal{
    min-width:0;
    width:min(100%, 520px);
    padding:18px;
  }
}

/*  analysis modal   insert before the @media (max-width: 900px) block */
.analysis-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px 16px;margin:12px 0;font-size:13px}
.analysis-grid .a-label{color:var(--text-dim);font-size:11px;text-transform:uppercase;letter-spacing:0.5px}
.analysis-grid .a-value{color:var(--accent);font-family:var(--font-mono);font-weight:600;font-size:14px}
.analysis-columns{margin:10px 0;max-height:140px;overflow:auto;border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-size:12px;font-family:var(--font-mono)}
.analysis-columns .a-col{display:flex;justify-content:space-between;gap:8px;padding:2px 0;color:var(--text)}
.analysis-columns .a-col span:first-child{color:var(--text-dim)}
.analysis-dilute{margin:14px 0 6px;display:flex;flex-direction:column;gap:6px}
.analysis-dilute label{font-size:12px;color:var(--text-dim);display:flex;justify-content:space-between;align-items:center}
.analysis-dilute label span{color:var(--accent);font-family:var(--font-mono);font-weight:600}
.analysis-dilute input[type=range]{-webkit-appearance:none;width:100%;height:4px;border-radius:2px;background:var(--border);outline:none}
.analysis-dilute input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--accent);cursor:pointer;border:3px solid var(--bg)}
.analysis-result{font-size:11px;color:var(--text-dim);font-family:var(--font-mono);margin-top:2px}

@media (max-width: 600px){
  .tb-btn,.tb-badge,.tb-select{min-height:36px}
  .tb-pills{gap:5px}
  .tb-pill{font-size:11px}
}
/* -- TERMINAL MODAL -------------------------------------------- */
.terminal-modal{width:min(96vw,980px)}
.terminal-wrap{display:flex;flex-direction:column;gap:12px}
.terminal-help{
  font-size:12px;color:var(--text-dim);line-height:1.5;
  border:1px solid var(--border);border-radius:8px;
  background:rgba(255,255,255,0.02);padding:10px 12px
}
.terminal-editor{
  width:100%;min-height:180px;resize:vertical;
  border:1px solid var(--border);border-radius:8px;
  background:#0b1020;color:var(--accent);
  padding:12px 14px;outline:none;
  font:13px/1.6 var(--font-mono)
}
body.light .terminal-editor{
  background:#f8fafc;color:#0f172a;
}
.terminal-editor:focus{border-color:var(--accent)}
.terminal-status{
  min-height:20px;font-size:12px;font-family:var(--font-mono);
  color:var(--text-dim)
}
.terminal-status.ok{color:var(--accent)}
.terminal-status.err{color:var(--danger)}
.terminal-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:12px
}
.terminal-box{
  border:1px solid var(--border);border-radius:8px;padding:10px 12px;
  background:rgba(255,255,255,0.02)
}
.terminal-box h3{
  margin:0 0 8px 0;font-size:12px;color:var(--text-dim);
  text-transform:uppercase;letter-spacing:0.7px
}
.terminal-pre{
  margin:0;white-space:pre-wrap;word-break:break-word;
  font:12px/1.5 var(--font-mono);color:var(--text)
}
.terminal-list{
  max-height:220px;overflow:auto;border:1px solid var(--border);
  border-radius:8px
}
.terminal-item{
  padding:10px 12px;border-bottom:1px solid var(--border);
  cursor:pointer
}
.terminal-item:last-child{border-bottom:none}
.terminal-item:hover{background:var(--surface-hover)}
.terminal-item .ti-name{
  font:12px var(--font-mono);color:var(--accent)
}
.terminal-item .ti-meta{
  margin-top:4px;font-size:11px;color:var(--text-dim)
}

@media (max-width: 760px){
  .terminal-grid{grid-template-columns:1fr}
}
/* language selector */
/* tiny language selector */
/*
#lang-switch {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;

  font-size: 12px;
  font-weight: 600;

  padding: 2px 18px 2px 6px;
  height: 22px;
  line-height: 18px;

  border: 1px solid #ccc;
  border-radius: 6px;
  background: #fff;

  cursor: pointer;

  background-image: url("data:image/svg+xml;utf8,<svg fill='gray' height='10' viewBox='0 0 20 20' width='10' xmlns='http://www.w3.org/2000/svg'><path d='M5 7l5 5 5-5z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 4px center;
}
*/
/* mobile tap comfort */
@media (max-width: 600px) {
  #lang-switch {
    font-size: 13px;
    height: 26px;
    padding: 3px 20px 3px 8px;
  }
}
/* QR SCANNER RMODAL */
#scanModal{display:none;position:fixed;inset:0;z-index:9000;background:rgba(0,0,0,0.85);align-items:center;justify-content:center}
#scanModal.visible{display:flex}
.scan-panel{background:var(--surface,#ffffff);border:1px solid var(--border,#d0d5dd);border-radius:14px;width:min(640px,calc(100vw - 24px));max-height:92vh;overflow:auto;box-shadow:0 20px 60px rgba(0,0,0,0.6)}
.scan-hdr{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--border,#d0d5dd)}
.scan-hdr-title{font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--accent,#00e5ff);letter-spacing:1px;text-transform:uppercase}
.scan-close{width:28px;height:28px;border-radius:50%;border:none;background:rgba(255,255,255,0.06);color:var(--text-dim,#5a6f8a);font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.scan-close:hover{background:var(--danger,#ff4757);color:#fff}
.scan-body{padding:14px 18px}
.scan-viewport{position:relative;width:100%;min-height:240px;background:#000;border-radius:10px;overflow:hidden;margin-bottom:12px}
.scan-viewport video{width:100%;height:100%;object-fit:cover;display:block}
.scan-viewport canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.scan-ctrl-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:10px}
.scan-select{background:var(--bg,#ffffff);color:var(--text,#1a202c);border:1px solid var(--border,#d0d5dd);border-radius:6px;padding:7px 8px;font-size:12px;font-family:var(--font-mono);outline:none;cursor:pointer;flex:1;min-width:120px}
.scan-btn{padding:8px 14px;border-radius:7px;border:1px solid var(--border,#d0d5dd);background:var(--surface-hover,#1b2540);color:var(--text,#1a202c);cursor:pointer;font-size:12px;font-family:var(--font-ui);transition:background 0.15s}
.scan-btn:hover{background:var(--border,#d0d5dd)}
.scan-btn.primary{background:var(--accent,#00e5ff);color:#000;border-color:var(--accent,#00e5ff);font-weight:600}
.scan-btn:disabled{opacity:0.4;cursor:not-allowed}
.scan-status{font-family:var(--font-mono);font-size:11px;color:var(--text-dim,#5a6f8a);min-height:18px;margin-bottom:8px}
.scan-diag{border:1px solid var(--border,#d0d5dd);border-radius:8px;padding:10px 12px;font-size:11px;font-family:var(--font-mono);color:var(--text-dim,#5a6f8a);line-height:1.5;max-height:160px;overflow-y:auto;background:rgba(0,0,0,0.15)}
.scan-diag-ok{color:#22c55e}
.scan-diag-err{color:#ff4757}
.scan-diag-info{color:#00e5ff}
.scan-diag-chunk{color:#f59e0b}
.scan-chunk-grid{display:flex;flex-wrap:wrap;gap:4px;margin:8px 0}
.scan-chunk-pill{padding:3px 8px;border-radius:4px;font-size:10px;font-family:var(--font-mono);border:1px solid var(--border,#d0d5dd)}
.scan-chunk-pill.have{background:#16a34a;color:#fff;border-color:#16a34a}
.scan-chunk-pill.miss{background:transparent;color:var(--text-dim,#5a6f8a)}
.scan-zoom-row{display:flex;align-items:center;gap:8px;margin-bottom:8px;display:none}
.scan-zoom-row.visible{display:flex}
.scan-zoom-row label{font-size:11px;color:var(--text-dim,#5a6f8a);min-width:40px}
.scan-zoom-row input[type=range]{flex:1;-webkit-appearance:none;height:4px;border-radius:2px;background:var(--border,#d0d5dd);outline:none}
.scan-zoom-row input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--accent,#00e5ff);cursor:pointer}
.scan-zoom-val{font-family:var(--font-mono);font-size:10px;color:var(--accent,#00e5ff);min-width:30px;text-align:right}
.terminal-modal{
  position:absolute !important;
  left:50%;
  top:50%;
  transform:translate(-50%,-50%);
  width:min(1100px, calc(100vw - 32px));
  max-height:min(88vh, calc(100vh - 32px));
  cursor:default;
}
.terminal-modal.dragging{
  user-select:none;
}
.terminal-drag-handle{
  cursor:move;
  padding-right:60px;
}
.term-hint{
  font-size:11px;
  color:var(--text-dim,#5a6f8a);
  margin:0 0 8px 0;
}
/* INTERPOLATION MODAL */
.interp-modal{
  width:min(94vw,520px);
  max-height:88vh;
  overflow:auto;
  padding:14px;
}

.interp-modal h2{
  margin:0 0 10px;
  font-size:18px;
}

.interp-modal .theme-grid{
  gap:8px;
}

.interp-modal .theme-row{
  gap:6px;
}

.interp-modal .input,
.interp-modal .select{
  min-height:36px;
  font-size:14px;
}

.interp-modal .analysis-result{
  padding:8px 10px;
  font-size:12px;
  line-height:1.25;
}

.interp-modal .modal-btns{
  margin-top:10px;
  gap:8px;
}

@media (max-width:600px){
  .interp-modal{
    width:94vw;
    max-height:84vh;
    padding:12px;
  }

  .interp-modal .theme-row{
    grid-template-columns:1fr;
  }
}
/* DANGER BUTTON */
.modal-btn.danger{
  background: rgba(255, 80, 80, 0.12);
  color: #ff6b6b;
  border: 1px solid rgba(255, 80, 80, 0.35);
  font-weight: 700;
  transition: all .18s ease;
}

.modal-btn.danger:hover{
  background: rgba(255, 80, 80, 0.22);
  border-color: rgba(255, 80, 80, 0.55);
  color: #ff8080;
}

.modal-btn.danger:active{
  background: rgba(255, 80, 80, 0.35);
  transform: scale(0.98);
}

.modal-btn.danger:disabled{
  opacity: 0.4;
  filter: grayscale(0.4);
  cursor: not-allowed;
}
/* TRACE CARD SCROLLING CONTROL */
#ro-series{
  max-height: min(46vh, 360px);
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}

.ro-scroll-controls{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:6px;
  margin-top:8px;
}
/* RIGHT CLICK CONTEXT MENU ADDITION */
/* two equal-width ctx-items side by side */
.ctx-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

/* two cfg-rows side by side (x/y col selects, style/marker, color/width) */
.ctx-cfg-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px 4px;
}

/* six sliders ? 3 2 grid */
.ctx-slider-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 8px;
}

/* delete-all inline in header */
.ctx-hdr-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 8px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-dim);
}
.ctx-item-danger { color: var(--danger); }
.ctx-item {
  border: 1px solid var(--border, rgba(255,255,255,0.08));
  border-radius: 4px;
}
/* long press prevents text selection */
#ctx-body, canvas {
  -webkit-user-select: none;
  user-select: none;
}
/* MORE tools */
.more-lbl{
  display:flex;
  flex-direction:column;
  gap:6px;
  margin-bottom:10px;
  font-size:12px;
  font-weight:700;
  color:var(--text-dim);
}

.more-note{
  font-size:11px;
  color:var(--text-dim);
  line-height:1.45;
  margin-bottom:12px;
}

/* Mk3-75 -- Plot Settings tab clean single-column layout.  The previous
   column-count masonry flowed logical blocks across columns arbitrarily
   (Series header split from its fields, etc).  Now each section is a
   full-width block; the dense pairs already use .ctx-sl-grid (2-col). */
#settings-tab-body{display:block}
#settings-tab-body .ctx-hdr{margin-top:6px;padding-top:8px}
#settings-tab-body .ctx-field label{width:auto;min-width:54px}
#settings-tab-body .ctx-sl-grid{grid-template-columns:1fr 1fr;gap:6px 14px}