/* =============================================
   Limou — Merged CSS (deduplicated)
   ============================================= */


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


/* ═══════════════════════════════════════════════════════════════════════════
   LIMOU — Système de couleurs · Électrique & Botanique
   Jaune citron #E8D800  →  ∑ Mode Formules
   Vert  citron #7BC800  →  ¶ Mode Document
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── NOISE TEXTURE (poudre) ─────────────────────────────────────────────── */
#top::after, #bot::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.92' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='0.18'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 180px 180px;
  mix-blend-mode: multiply;
  pointer-events: none;
  z-index: 1;
}
#top > *, #bot > * { position: relative; z-index: 2; }


/* ═══════════════════════════════════════════════════════════════════════════
   CSS VARIABLES — Day Mode (default)
   ═══════════════════════════════════════════════════════════════════════════ */
:root {
  /* ── Formules (jaune citron) ── */
  --fe-topbar:        #E8D800;
  --fe-topbar-text:   rgba(0,0,0,.75);
  --fe-topbar-muted:  rgba(0,0,0,.45);
  --fe-accent:        #6A5A00;
  --fe-accent-soft:   #FFF79A;
  --fe-bg:            #FAFAF5;
  --fe-panel:         #FAFAEC;
  --fe-logo:          #E8D800;

  /* ── Document (vert citron) ── */
  --doc-topbar:       #7BC800;
  --doc-topbar-text:  rgba(0,0,0,.75);
  --doc-topbar-muted: rgba(0,0,0,.45);
  --doc-accent:       #2E6A00;
  --doc-accent-soft:  #C0FA90;
  --doc-bg:           #F8FFF0;
  --doc-panel:        #F0FFDE;
  --doc-logo:         #7BC800;

  /* ── Neutres partagés ── */
  --bg:               #FAFAF5;
  --bg2:              #f5f5f5;
  --bg3:              #969795;
  --border:           #e0e0e0;
  --text:             #2A2600;
  --text2:            #555;
  --text3:            #999;
  --text4:            #bbb;

  /* ── Accent courant (changé par JS selon le mode) ── */
  --accent:           var(--fe-accent);
  --accent-soft:      var(--fe-accent-soft);
  --topbar-bg:        var(--fe-topbar);

  /* ── Suppression neutre ── */
  --delete-bg:        rgba(0,0,0,.08);
  --delete-color:     #888;

  /* ── Conservés pour compatibilité ── */
  --green:            #7BC800;
  --green-bg:         rgba(123,200,0,.12);
  --orange:           #D85A30;
  --red:              #E24B4A;

  /* ── Dimensions ── */
  --panel-w:          272px;
  --top-h:            46px;
  --bot-h:            28px;

  /* ── Typo math ── */
  --mfont:            'STIX Two Math', 'Latin Modern Math', Georgia, serif;
  --SS:               0.68;
}

/* ── Mode couleurs dynamiques ── */
body        { --accent: var(--fe-accent); --accent-soft: var(--fe-accent-soft); --panel-bg: var(--fe-panel); }
body.mode-doc { --accent: var(--doc-accent); --accent-soft: var(--doc-accent-soft); --panel-bg: var(--doc-panel); }

/* ── Topbar / Statusbar couleur selon mode ── */
body #top        { background: var(--fe-topbar); }
body #bot        { background: var(--fe-topbar); }
body.mode-doc #top { background: var(--doc-topbar); }
body.mode-doc #bot { background: var(--doc-topbar); }

/* ── Logo couleur selon mode ── */
body.mode-doc .logo-mark { background: var(--doc-logo); }


/* ═══════════════════════════════════════════════════════════════════════════
   BASE
   ═══════════════════════════════════════════════════════════════════════════ */
html, body {
  height: 100%;
  overflow: hidden;
  font-family: -apple-system, 'Helvetica Neue', Arial, sans-serif;
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  transition: background .25s, color .25s;
}
#shell { display: flex; flex-direction: column; height: 100vh; }

.hidden-pb  { display: none !important; }
.empty-msg  { font-size: 10px; color: var(--text3); line-height: 1.6; }
.mono-val   { font-size: 10px; font-family: monospace; color: var(--text); min-width: 40px; text-align: right; flex-shrink: 0; }

.full-btn       { width: 100%; padding: 7px; border-radius: 6px; border: none; font-size: 11px; font-weight: 500; cursor: pointer; display: block; text-align: center; transition: opacity .12s; }
.full-btn:hover { opacity: .88; }
.orange-btn     { background: var(--orange); color: #fff; }
.grey-btn       { background: var(--bg3); color: var(--text2); }

.ins-btn        { padding: 5px 10px; border-radius: 5px; border: none; font-size: 11px; cursor: pointer; }
.ins-btn.green  { background: var(--green-bg); color: var(--green); }
.ins-btn.red    { background: var(--delete-bg); color: var(--delete-color); }

.ptag { display: inline-flex; padding: 2px 5px; border-radius: 3px; background: var(--fe-accent-soft); color: var(--fe-accent); font-size: 9px; margin: 2px; font-family: monospace; }

#toast { position: fixed; bottom: 40px; left: 50%; transform: translateX(-50%); padding: 6px 16px; background: rgba(0,0,0,.75); color: #fff; font-size: 11px; border-radius: 20px; pointer-events: none; opacity: 0; transition: opacity .2s; z-index: 9000; white-space: nowrap; }
#toast.show { opacity: 1; }


/* ═══════════════════════════════════════════════════════════════════════════
   TOPBAR
   ═══════════════════════════════════════════════════════════════════════════ */
#top {
  height: var(--top-h);
  display: flex;
  align-items: center;
  position: relative;
  flex-shrink: 0;
  border-bottom: 1px solid rgba(0,0,0,.08);
  overflow-x: auto;
  transition: background .25s;
}

.logo       { display: flex; align-items: center; gap: 8px; padding: 0 14px; border-right: 1px solid rgba(0,0,0,.1); height: 100%; flex-shrink: 0; }
.logo-mark  {
  width: 26px; height: 26px; border-radius: 6px;
  background: var(--fe-logo);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 800; color: #000;
  box-shadow: 0 1px 4px rgba(0,0,0,.18);
  transition: background .2s;
}
.logo-name  { font-size: 14px; font-weight: 600; color: var(--fe-topbar-text); letter-spacing: -.2px; }

.mode-tabs  { display: flex; align-items: stretch; height: 100%; border-right: 1px solid rgba(0,0,0,.08); }
.mode-tab   { display: flex; align-items: center; padding: 0 15px; font-size: 14px; font-weight: 550; color: var(--fe-topbar-muted); cursor: pointer; border: none; background: transparent; border-bottom: 2px solid transparent; transition: all .15s; white-space: nowrap; }
.mode-tab:hover { color: var(--fe-topbar-text); }
.mode-tab.on    { color: var(--fe-topbar-text); border-bottom-color: var(--fe-accent); }

body.mode-doc .mode-tab       { color: var(--doc-topbar-muted); }
body.mode-doc .mode-tab:hover { color: var(--doc-topbar-text); }
body.mode-doc .mode-tab.on    { color: var(--doc-topbar-text); border-bottom-color: var(--doc-accent); }

.top-tools { display: flex; align-items: center; gap: 3px; padding: 0 10px; border-right: 1px solid rgba(0,0,0,.08); flex-shrink: 0; }
.tsep      { width: 1px; height: 18px; background: rgba(0,0,0,.12); margin: 0 4px; flex-shrink: 0; }
.tbtn      { width: 32px; height: 32px; border-radius: 6px; border: none; background: transparent; color: var(--fe-topbar-text); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 15px; transition: all .12s; flex-shrink: 0; }
.tbtn:hover { background: rgba(0,0,0,.08); }
.tbtn.on    { background: var(--fe-accent-soft); color: var(--fe-accent); }
.tbtn.accent { background: var(--doc-accent-soft); color: var(--doc-accent); }

body.mode-doc .tbtn       { color: var(--doc-topbar-text); }
body.mode-doc .tbtn:hover { background: rgba(0,0,0,.08); }
body.mode-doc .tbtn.on    { background: var(--doc-accent-soft); color: var(--doc-accent); }

.top-title  { flex: 1; display: flex; justify-content: center; padding: 0 10px; }
.title-inp  { background: transparent; border: none; outline: none; font-size: 14px; font-weight: 500; color: var(--fe-topbar-text); text-align: center; padding: 4px 10px; border-radius: 5px; width: 240px; transition: color .2s; }
.title-inp:hover  { background: rgba(0,0,0,.06); }
.title-inp:focus  { background: rgba(0,0,0,.09); }
body.mode-doc .title-inp       { color: var(--doc-topbar-text); }
body.mode-doc .title-inp:hover { background: rgba(0,0,0,.06); }

.top-right  { display: flex; align-items: center; gap: 6px; padding: 0 12px; border-left: 1px solid rgba(0,0,0,.08); flex-shrink: 0; }
.abtn       { display: flex; align-items: center; gap: 5px; padding: 6px 14px; border-radius: 6px; border: none; cursor: pointer; font-size: 12px; font-weight: 500; transition: opacity .12s; white-space: nowrap; }
.abtn-prev  { background: rgba(0,0,0,.1); color: var(--fe-topbar-text); }
.abtn-prev:hover  { background: rgba(0,0,0,.16); }
.abtn-print { background: var(--fe-accent); color: #fff; font-weight: 600; }
.abtn-print:hover { opacity: .88; }
body.mode-doc .abtn-prev  { color: var(--doc-topbar-text); }
body.mode-doc .abtn-print { background: var(--doc-accent); color: #fff; }


/* ═══════════════════════════════════════════════════════════════════════════
   STATUSBAR
   ═══════════════════════════════════════════════════════════════════════════ */
#bot {
  height: var(--bot-h);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 12px;
  position: relative;
  border-top: 1px solid rgba(0,0,0,.08);
  flex-shrink: 0;
  transition: background .25s;
}
.st    { font-size: 11px; color: var(--fe-topbar-muted); white-space: nowrap; }
.stsep { width: 1px; height: 10px; background: rgba(0,0,0,.12); }

body.mode-doc .st    { color: var(--doc-topbar-muted); }
body.mode-doc .stsep { background: rgba(0,0,0,.12); }

#zoom-c  { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.zbtn    { width: 20px; height: 20px; border-radius: 4px; border: 1px solid rgba(0,0,0,.15); background: rgba(0,0,0,.07); color: var(--fe-topbar-text); cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 13px; line-height: 1; }
.zbtn:hover { background: rgba(0,0,0,.14); }
.zlbl    { font-size: 10px; color: var(--fe-topbar-muted); font-family: monospace; min-width: 36px; text-align: center; cursor: pointer; padding: 2px 4px; border-radius: 3px; }
.zlbl:hover { background: rgba(0,0,0,.08); }
.zfit    { font-size: 10px; padding: 2px 7px; border-radius: 3px; border: 1px solid rgba(0,0,0,.15); background: rgba(0,0,0,.07); color: var(--fe-topbar-muted); cursor: pointer; }
.zfit:hover { background: rgba(0,0,0,.14); }

body.mode-doc .zbtn       { color: var(--doc-topbar-text); }
body.mode-doc .zbtn:hover { background: rgba(0,0,0,.14); }
body.mode-doc .zlbl       { color: var(--doc-topbar-muted); }
body.mode-doc .zfit       { color: var(--doc-topbar-muted); }


/* ═══════════════════════════════════════════════════════════════════════════
   PANELS
   ═══════════════════════════════════════════════════════════════════════════ */
#work  { flex: 1; display: flex; overflow: hidden; position: relative; }
.panel { position: absolute; top: 0; bottom: 0; width: var(--panel-w); background: rgba(250,250,252,.97); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); display: flex; flex-direction: column; z-index: 40; transition: transform .22s cubic-bezier(.4,0,.2,1); }
.left-p  { left: 0; border-right: 1px solid rgba(0,0,0,.08); box-shadow: 3px 0 16px rgba(0,0,0,.07); }
.right-p { right: 0; border-left: 1px solid rgba(0,0,0,.08); box-shadow: -3px 0 16px rgba(0,0,0,.07); }
.left-p.hidden  { transform: translateX(calc(-1 * var(--panel-w))); }
.right-p.hidden { transform: translateX(var(--panel-w)); }
.panel-hd    { display: flex; align-items: center; justify-content: space-between; padding: 10px 12px 8px; border-bottom: 1px solid #eee; flex-shrink: 0; }
.panel-title { font-size: 11px; font-weight: 600; color: #999; text-transform: uppercase; letter-spacing: .07em; }
.panel-x     { width: 20px; height: 20px; border-radius: 4px; border: none; background: transparent; cursor: pointer; font-size: 12px; color: #bbb; display: flex; align-items: center; justify-content: center; }
.panel-x:hover { background: #eee; color: var(--text); }
.panel-body  { flex: 1; overflow-y: auto; padding: 8px; }
.panel-foot  { padding: 8px; border-top: 1px solid #eee; flex-shrink: 0; }
.ptabs { display: flex; border-bottom: 1px solid #eee; flex-shrink: 0; background: var(--bg2); }
.ptab  { flex: 1; padding: 8px 2px; font-size: 11px; text-align: center; cursor: pointer; color: #aaa; border-bottom: 2px solid transparent; transition: all .12s; white-space: nowrap; }
.ptab.on { color: var(--accent); border-bottom-color: var(--accent); background: var(--bg); }

/* Props */
.psec { margin-bottom: 12px; padding-bottom: 10px; border-bottom: 1px solid #ececec; }
.psec:last-child { border-bottom: none; margin-bottom: 0; }
.ph   { font-size: 10px; font-weight: 600; color: #aaa; text-transform: uppercase; letter-spacing: .07em; margin-bottom: 7px; display: flex; align-items: center; gap: 5px; }
.pr   { display: flex; align-items: center; gap: 5px; margin-bottom: 5px; flex-wrap: wrap; }
.pr label { font-size: 11px; color: #777; min-width: 52px; white-space: nowrap; }
.pi   { flex: 1; padding: 4px 6px; font-size: 11px; border: 1px solid #ddd; border-radius: 5px; background: #fff; color: var(--text); font-family: monospace; text-align: right; }
.pi:focus { outline: none; border-color: var(--accent); }
.pi[type=range] { padding: 0; border: none; background: transparent; accent-color: var(--accent); min-width: 40px; }
.ps   { flex: 1; padding: 4px 6px; font-size: 11px; border: 1px solid #ddd; border-radius: 5px; background: #fff; color: var(--text); cursor: pointer; }
.ps:focus { outline: none; border-color: var(--accent); }
.pu   { font-size: 11px; color: #aaa; min-width: 18px; }
.ptog { display: flex; align-items: center; gap: 7px; margin-bottom: 5px; cursor: pointer; }
.ptog input,.inline-check input { accent-color: var(--accent); }
.ptog span  { font-size: 11px; color: #777; }
.inline-check { font-weight: 400; text-transform: none; letter-spacing: 0; font-size: 10px; cursor: pointer; display: flex; align-items: center; gap: 3px; }

/* Inspector MATH table: long labels (NumeratorShiftUp, DenomShiftDown…) wrap onto 2 lines */
#fe-it-math .pr { flex-wrap: wrap; row-gap: 2px; }
#fe-it-math .pr label { white-space: normal; min-width: 0; width: 100%; flex-shrink: 0; line-height: 1.3; font-size: 10px; color: #888; }

/* Margin grid */
.mgrid  { display: grid; grid-template-columns: 1fr 52px 1fr; grid-template-rows: auto 30px auto; gap: 3px; align-items: center; margin-bottom: 5px; }
.mi     { padding: 3px 4px; font-size: 11px; border: 1px solid #ddd; border-radius: 5px; background: #fff; color: var(--text); text-align: center; font-family: monospace; width: 100%; }
.mi:focus { outline: none; border-color: var(--accent); }
.mlbl   { font-size: 8px; color: #bbb; text-align: center; margin-top: 1px; }
.mcenter { display: flex; align-items: center; justify-content: center; font-size: 9px; color: #ccc; border: 1px solid #e8e8e8; border-radius: 5px; background: #f8f8f8; }
.css-ta { width: 100%; height: 110px; font-size: 9px; font-family: monospace; border: 1px solid #ddd; border-radius: 5px; padding: 6px; background: #1a1a2e; color: #cdd6f4; resize: none; line-height: 1.5; }

/* Layers */
.layer-row { display: flex; align-items: center; gap: 5px; padding: 5px 7px; border-radius: 6px; margin-bottom: 3px; border: 1px solid transparent; cursor: pointer; transition: background .1s; position: relative; }
.layer-row:hover { background: #ececec; }
.layer-row.active-l { border-color: var(--accent); background: var(--accent-soft); }
.layer-row.l-dragging { opacity: .4; }
.layer-row.l-drag-over-top    { border-top: 2px solid var(--accent) !important; }
.layer-row.l-drag-over-bot { border-bottom: 2px solid var(--accent) !important; }
.l-dot  { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.l-name { flex: 1; font-size: 12px; color: var(--text); min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.l-ico  { font-size: 11px; color: #bbb; cursor: pointer; padding: 0 2px; line-height: 1; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
.l-ico:hover { color: var(--text); }
.l-ico-lock       { color: #ccc; }
.l-ico-lock.locked { color: var(--accent); }
.l-ico-lock:hover  { color: var(--text) !important; }
.add-layer-btn { width: 100%; padding: 5px; border: 1px dashed #ccc; border-radius: 5px; background: transparent; color: #aaa; font-size: 11px; cursor: pointer; text-align: center; margin-top: 4px; }
.add-layer-btn:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

/* Font */
.font-dz  { border: 1.5px dashed #ccc; border-radius: 7px; padding: 14px 8px; text-align: center; cursor: pointer; margin-bottom: 8px; transition: background .15s; }
.font-dz:hover, .font-dz.dov { background: var(--accent-soft); border-color: var(--accent); }
.font-dz-icon { font-size: 20px; color: #aaa; margin-bottom: 4px; }
.font-dz p    { font-size: 11px; color: #aaa; line-height: 1.5; }
.font-item    { padding: 8px; border: 1px solid #eee; border-radius: 6px; background: #fff; margin-bottom: 6px; }
.font-name-lbl { font-size: 12px; font-weight: 600; color: var(--text); margin-bottom: 3px; }
.font-preview { font-size: 18px; line-height: 1.3; margin: 4px 0; min-height: 28px; }
.axis-lbl-row { font-size: 10px; color: #777; display: flex; justify-content: space-between; margin-top: 3px; }
.font-apply   { width: 100%; padding: 5px; font-size: 11px; border: 1px solid #ddd; border-radius: 4px; background: var(--bg2); color: var(--text2); cursor: pointer; margin-top: 6px; text-align: center; }
.font-apply:hover { background: var(--accent-soft); color: var(--accent); }

/* Font controls — taille par défaut & couleur */
.font-ctrl-sec { padding: 6px 8px; border: 1px solid #eee; border-radius: 6px; background: #fff; margin-bottom: 6px; }
.font-sz-row { display: flex; align-items: center; gap: 5px; margin-top: 3px; }
.font-sz-row input[type=range] { flex: 1; accent-color: var(--accent); }
.font-sz-num { width: 46px; padding: 2px 4px; font-size: 10px; border: 1px solid #ddd; border-radius: 4px; background: #fff; color: var(--text); font-family: monospace; text-align: center; }
.font-sz-num:focus { outline: none; border-color: var(--accent); }
.font-color-row { display: flex; align-items: center; gap: 6px; margin-top: 5px; }
.font-color-pick { width: 28px; height: 28px; border: 1.5px solid #ddd; border-radius: 5px; padding: 2px; cursor: pointer; background: none; flex-shrink: 0; }
.font-color-pick:focus { outline: none; border-color: var(--accent); }
.font-color-hex { flex: 1; font-size: 10px; font-family: monospace; color: var(--text2); }
.font-color-reset { width: 22px; height: 22px; border: 1px solid #ddd; border-radius: 4px; background: var(--bg2); color: #888; font-size: 13px; cursor: pointer; display: flex; align-items: center; justify-content: center; flex-shrink: 0; padding: 0; }
.font-color-reset:hover { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.font-sec-sep { height: 1px; background: #eee; margin: 4px 0 8px; }
.font-empty-note { font-size: 10px; color: #aaa; text-align: center; padding: 10px 0; }

/* Variable font axis sliders */
.font-axis-slider { display: block; width: 100%; margin-top: 3px; accent-color: var(--accent); }

/* Font type badge (Variable / Static) */
.font-type-badge { font-size: 8px; font-weight: 600; padding: 2px 5px; border-radius: 3px; background: var(--bg2); color: var(--text3); letter-spacing: .04em; text-transform: uppercase; flex-shrink: 0; }
.font-type-badge.variable { background: var(--accent-soft); color: var(--accent); }

/* Axis tag badge (wght, wdth…) */
.axis-tag-badge { font-size: 8px; font-family: monospace; padding: 1px 4px; border-radius: 3px; background: var(--bg2); color: var(--text3); }

/* Font styles (polices statiques) */
.font-style-row { margin-top: 6px; }
.font-style-grid { display: flex; flex-wrap: wrap; gap: 3px; margin-top: 4px; }
.font-sty-btn { padding: 3px 6px; font-size: 10px; border: 1px solid #ddd; border-radius: 4px; background: #f5f5f5; color: var(--text2); cursor: pointer; transition: all .1s; }
.font-sty-btn:hover { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.font-sty-btn.on { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); font-weight: 600; }
.font-sty-btn.unavailable { opacity: .35; cursor: not-allowed; }

/* Profiles */
.profile-item { display: flex; align-items: center; gap: 6px; padding: 5px 7px; border: 1px solid #eee; border-radius: 5px; background: #fff; margin-bottom: 4px; font-size: 10px; cursor: pointer; }
.profile-item:hover { background: var(--accent-soft); }

/* Equation cards */
.eq-card { border: 1px solid #e8e8e8; border-radius: 7px; background: #fff; margin-bottom: 7px; overflow: hidden; transition: box-shadow .12s; }
.eq-card:hover { box-shadow: 0 2px 8px rgba(0,0,0,.1); border-color: var(--accent); }
.eq-card-head { display: flex; align-items: center; gap: 4px; padding: 5px 7px 4px; border-bottom: 1px solid #f0f0f0; }
.eq-card-name { flex: 1; font-size: 10px; font-weight: 600; color: var(--text); min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; cursor: text; outline: none; }
.eq-card-name:focus { background: var(--accent-soft); border-radius: 3px; padding: 1px 3px; }
.eq-card-acts { display: flex; gap: 2px; flex-shrink: 0; }
.eq-svg-btn { font-size: 9px !important; font-family: monospace; font-weight: 700; letter-spacing: .03em; color: var(--accent) !important; }
.eq-svg-btn:hover { color: var(--text) !important; }
.eq-preview { padding: 8px 6px; min-height: 44px; display: flex; align-items: center; justify-content: center; cursor: pointer; background: #fafaf8; transition: background .1s; overflow: hidden; }
.eq-preview:hover { background: var(--accent-soft); }
.eq-preview:active { opacity: .8; }
.eq-count-badge { padding: 3px 7px; font-size: 9px; color: var(--text3); border-top: 1px solid #f0f0f0; text-align: right; }

/* Block list */
.bl-item  { display: flex; align-items: center; gap: 7px; padding: 5px 7px; border-radius: 6px; cursor: pointer; margin-bottom: 2px; transition: background .1s; }
.bl-item:hover { background: #ececec; }
.bl-item.sel   { background: var(--accent-soft); outline: 1px solid rgba(55,138,221,.25); }
.bl-icon  { width: 22px; height: 22px; border-radius: 4px; display: flex; align-items: center; justify-content: center; font-size: 10px; font-weight: 600; flex-shrink: 0; }
.bl-info  { flex: 1; min-width: 0; }
.bl-tp    { font-size: 9px; color: #aaa; text-transform: uppercase; letter-spacing: .05em; }
.bl-pv    { font-size: 11px; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bl-acts  { display: flex; gap: 1px; opacity: 0; transition: opacity .1s; }
.bl-item:hover .bl-acts { opacity: 1; }
.bl-a     { width: 17px; height: 17px; border-radius: 3px; border: none; background: transparent; cursor: pointer; font-size: 10px; color: #bbb; }
.bl-a:hover { background: #ddd; color: var(--text); }
.add-btns { display: flex; gap: 3px; }
.add-btn  { flex: 1; padding: 6px 2px; border: 1px dashed #ccc; border-radius: 5px; background: transparent; color: #aaa; font-size: 11px; cursor: pointer; text-align: center; transition: all .12s; }
.add-btn:hover { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }


/* ═══════════════════════════════════════════════════════════════════════════
   FORMULA EDITOR
   ═══════════════════════════════════════════════════════════════════════════ */
#fe-wrap     { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.rulers-row  { display: flex; flex-shrink: 0; }
.ruler-corner { width: 20px; height: 20px; background: #f0f0f0; border-bottom: 1px solid #d8d8d8; border-right: 1px solid #d8d8d8; flex-shrink: 0; }
canvas.ruler { background: #f0f0f0; cursor: crosshair; user-select: none; display: block; }
.h-ruler { height: 20px; border-bottom: 1px solid #d8d8d8; flex: 1; }
.v-ruler { width: 20px; border-right: 1px solid #d8d8d8; }
.fe-inner { display: flex; flex: 1; overflow: hidden; position: relative; }
#fe-canvas  { position: relative; overflow: hidden; background: #F8F7F4; flex: 1; outline: none; cursor: default; }
#fe-canvas:focus { outline: none; }
#grid-svg, #axis-svg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; opacity: 0; overflow: visible; }
#fe-hint { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; pointer-events: none; transition: opacity .3s; }
#fe-hint p { font-size: 12px; color: #999; }
#fe-hint .hint-sub { font-size: 10px; color: #bbb; }
#slot-nav { position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%); padding: 4px 12px; background: rgba(245,245,245,.95); border: 1px solid #ddd; border-radius: 10px; font-size: 10px; color: #666; pointer-events: none; opacity: 0; transition: opacity .2s; z-index: 30; white-space: nowrap; }
#slot-nav.show { opacity: 1; }
#coord-display { position: absolute; bottom: 10px; right: 10px; font-size: 10px; font-family: monospace; color: #bbb; pointer-events: none; }

/* Marquee selection rectangle */
#fe-marquee {
  border: 1.5px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-radius: 2px;
  box-sizing: border-box;
}

/* Grid controls */
#gc-bar { display: flex; align-items: center; gap: 6px; padding: 5px 10px; border-top: 1px solid #e8e8e8; background: #f5f5f5; font-size: 10px; color: #777; flex-shrink: 0; }
#gc-bar input[type=range] { flex: 1; accent-color: var(--accent); }
#gc-bar select { font-size: 10px; padding: 2px 5px; border: 1px solid #ddd; border-radius: 4px; background: #fff; }
#snap-desc { font-size: 10px; color: var(--accent); font-family: monospace; min-width: 70px; }

/* Root elements */
.fe-el { position: absolute; display: inline-block; user-select: none; cursor: move; }
.fe-el.sel .fe-mei     { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }
.fe-el.multi-primary .fe-mei { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }
.fe-el.conflict .fe-mei { outline: 2px solid var(--red); outline-offset: 3px; border-radius: 3px; }
.fe-el.locked-el       { cursor: not-allowed; opacity: .55; }
.fe-el.being-moved .fe-mei { outline: 2px dashed var(--accent); outline-offset: 3px; border-radius: 3px; opacity: .8; }
/* tb-editor overrides delim-body's cursor:text — inherits move from .fe-el */
.tb-editor { cursor: inherit; user-select: none; }
.tb-editor:focus { cursor: text; user-select: text; }

/* Multi-selection inspector panel */
#fe-ins-multi { padding: 8px; }
.multi-ins-title { font-size: 10px; font-weight: 600; color: var(--accent); margin-bottom: 8px; display: flex; align-items: center; gap: 5px; }
.multi-ins-badge { background: var(--accent); color: #fff; border-radius: 10px; padding: 1px 7px; font-size: 10px; font-weight: 700; }
.multi-ins-row { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; font-size: 10px; color: var(--text2); }
.multi-ins-row label { min-width: 52px; flex-shrink: 0; }
.multi-ins-row input[type=range] { flex: 1; accent-color: var(--accent); }
.multi-ins-row input[type=number] { width: 44px; padding: 2px 4px; font-size: 10px; border: 1px solid #ddd; border-radius: 4px; background: #fff; color: var(--text); font-family: monospace; text-align: center; }
.multi-ins-row select { flex: 1; font-size: 10px; padding: 3px 5px; border: 1px solid #ddd; border-radius: 4px; background: #fff; color: var(--text); }
.multi-ins-actions { display: flex; gap: 4px; margin-top: 8px; }
.multi-ins-actions .ins-btn { flex: 1; }
.fe-mei { display: inline-flex; align-items: center; border-radius: 3px; }
.fe-el-del { position: absolute; top: -9px; right: -9px; width: 15px; height: 15px; border-radius: 50%; background: var(--delete-bg); color: var(--delete-color); font-size: 9px; display: flex; align-items: center; justify-content: center; opacity: 0; cursor: pointer; z-index: 20; transition: opacity .12s; }
.fe-el:hover .fe-el-del { opacity: 1; }
.locked-el .fe-el-del { display: none; }
.lock-badge { position: absolute; top: -9px; left: -2px; font-size: 9px; background: rgba(186,117,23,.85); color: #fff; border-radius: 3px; padding: 0 4px; opacity: 0; pointer-events: none; white-space: nowrap; display: inline-flex; align-items: center; gap: 2px; height: 16px; }
.locked-el:hover .lock-badge { opacity: 1; }
.bb-ov { position: absolute; border-radius: 3px; pointer-events: none; }

/* Custom axes */
.custom-axis { position: absolute; pointer-events: all; z-index: 25; cursor: move; }
.custom-axis.h-axis { left: 0; right: 0; height: 1px; background: rgba(216,90,48,.65); }
.custom-axis.v-axis { top: 0; bottom: 0; width: 1px; background: rgba(216,90,48,.65); }
.custom-axis:hover { background: rgba(216,90,48,1) !important; }
.ax-lbl { position: absolute; font-size: 8px; background: rgba(216,90,48,.85); color: #fff; padding: 1px 3px; border-radius: 2px; pointer-events: none; font-family: monospace; white-space: nowrap; }

/* Drag ghost */
.drag-ghost { position: fixed; pointer-events: none; z-index: 9999; font-size: 22px; opacity: .72; transform: translate(-50%,-50%); background: #fff; border: 1px solid var(--accent); border-radius: 5px; padding: 3px 8px; box-shadow: 0 2px 8px rgba(0,0,0,.15); font-family: var(--mfont); }


/* Text tool button — inherits .tbtn base, active state via standard .on system */
.tb-text-btn {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -.5px;
}
/* Active: same pattern as every other .tbtn.on — accent-soft bg + accent text */
.tb-text-btn.on {
  background: var(--fe-accent-soft) !important;
  color: var(--fe-accent) !important;
}
body.mode-doc .tb-text-btn.on {
  background: var(--doc-accent-soft) !important;
  color: var(--doc-accent) !important;
}

/* ── Textbox canvas element ────────────────────────────────────────────────── */

/* fe-mei variant for textbox: sets width/min-height */
.tb-mei { display: block; box-sizing: border-box; }

/* Show a faint dashed outline when NOT selected, so the box is visible */
.fe-el:not(.sel) .tb-mei { outline: 1px dashed rgba(0,0,0,.15); outline-offset: 2px; border-radius: 2px; }
.fe-el:hover:not(.sel) .tb-mei { outline-color: rgba(0,0,0,.30); }

/* Resize handle */
.tb-resize-handle {
  position: absolute;
  right: -5px;
  bottom: -5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  cursor: se-resize;
  opacity: 0;
  transition: opacity .15s;
  z-index: 10;
}
.fe-el.sel .tb-resize-handle,
.fe-el:hover .tb-resize-handle { opacity: 1; }

/* Ghost rectangle during text drag creation */
#tb-ghost {
  pointer-events: none;
  border-radius: 2px;
}


.kb-search { width: 100%; padding: 5px 8px; font-size: 12px; border: 1px solid #ddd; border-radius: 5px; background: #fff; color: var(--text); margin-bottom: 6px; transition: border-color .1s; }
.kb-search:focus { outline: none; border-color: var(--accent); }

/* Level selector */
.kb-level-bar { display: flex; gap: 3px; padding: 0 0 6px; flex-wrap: wrap; }
.kb-level-btn { flex: 1; min-width: 0; padding: 4px 3px; font-size: 10px; font-weight: 600; border: 1px solid #ddd; border-radius: 5px; background: #f5f5f5; color: #888; cursor: pointer; text-align: center; transition: all .12s; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kb-level-btn:hover,.kb-level-btn.on { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.kb-level-btn.on { font-weight: 700; }

.kb-cat { font-size: 10px; font-weight: 600; color: #aaa; text-transform: uppercase; letter-spacing: .07em; margin: 8px 0 4px; }

/* Subgroup pills */
.kb-pills { display: flex; gap: 3px; margin-bottom: 5px; flex-wrap: wrap; }
.kb-pill  { flex: 1; padding: 3px 5px; font-size: 10px; font-weight: 500; border: 0.5px solid #ddd; border-radius: 4px; background: #f5f5f5; color: #888; cursor: pointer; text-align: center; transition: all .1s; }
.kb-pill:hover,.kb-pill.on { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.kb-pill.on { font-weight: 600; }

/* Category scroll container */
.kb-section { margin-bottom: 8px; }
.kb-scroll  { max-height: 140px; overflow-y: auto; overflow-x: hidden; }
.kb-scroll::-webkit-scrollbar { width: 4px; }
.kb-scroll::-webkit-scrollbar-thumb { background: rgba(0,0,0,.15); border-radius: 2px; }

.kb-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 3px; margin-bottom: 4px; }
.kb-key  { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 40px; border: 1px solid #e8e8e8; border-radius: 5px; background: #fff; cursor: grab; user-select: none; transition: background .1s, border-color .1s; position: relative; gap: 1px; }
.kb-key:hover  { background: var(--accent-soft); border-color: rgba(55,138,221,.3); }
.kb-key:active { cursor: grabbing; }
.kb-key.str::after { content: ''; position: absolute; top: 3px; right: 3px; width: 4px; height: 4px; border-radius: 50%; background: var(--green); }

/* Missing glyph */
.kb-key.missing { opacity: .38; cursor: not-allowed; background: #f0f0f0; border-color: #ddd; pointer-events: none; }
.kb-key.missing .kb-sym { color: #bbb; }
.kb-key.missing-warn { opacity: .5; cursor: help; background: #fffbe6; border-color: #e8c600; }

.kb-sym { font-size: 16px; line-height: 1; font-family: var(--mfont); }
.kb-sub { font-size: 9px; color: #aaa; line-height: 1; }

/* Structure variant indicator (long-press available): small triangle top-left */
.kb-key.has-struct-variants::before { content: ''; position: absolute; top: 3px; left: 3px; width: 0; height: 0; border-style: solid; border-width: 5px 5px 0 0; border-color: var(--accent) transparent transparent transparent; opacity: .5; }

/* Accent popup (long-press) */
.kb-accent-popup { position: fixed; z-index: 9999; background: #fff; border: 1px solid #ddd; border-radius: 8px; padding: 5px; display: flex; gap: 3px; flex-wrap: wrap; max-width: 220px; box-shadow: 0 4px 16px rgba(0,0,0,.18); animation: kbPopIn .12s ease; }
.kb-accent-popup .kb-key { width: 38px; height: 38px; flex-shrink: 0; }
@keyframes kbPopIn { from { opacity: 0; transform: scale(.85); } to { opacity: 1; transform: scale(1); } }


/* ═══════════════════════════════════════════════════════════════════════════
   MATH NODES
   ═══════════════════════════════════════════════════════════════════════════ */
.mnode { display: inline-flex; align-items: center; vertical-align: middle; font-family: var(--mfont); }
.frac-node { display: inline-flex; flex-direction: column; align-items: stretch; vertical-align: middle; }
.fnw, .fdw { display: flex; justify-content: center; align-items: center; }
.fbar { background: currentColor; border-radius: 1px; align-self: stretch; }
.rad-node  { display: inline-flex; align-items: flex-start; vertical-align: middle; }
.rad-surd  { display: flex; align-items: flex-end; flex-shrink: 0; }
.rad-right { display: inline-flex; flex-direction: column; align-items: stretch; }
.rbar { background: currentColor; border-radius: 0 1px 0 0; margin-left: -1px; }
.delim-node { display: inline-flex; align-items: stretch; vertical-align: middle; }
.dsym { display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-family: var(--mfont); color: currentColor; line-height: 1; transition: font-size .1s; }
.delim-body { display: block; min-width: .5em; min-height: .85em; padding: 2px 3px; outline: none; white-space: pre-wrap; word-break: break-word; font-family: inherit; font-size: inherit; color: inherit; cursor: text; caret-color: currentColor; }
.delim-body:empty::before { content: attr(data-ph); font-size: .45em; color: rgba(29,158,117,.5); font-family: sans-serif; pointer-events: none; }
.delim-body:focus { outline: none; background: rgba(55,138,221,.04); }
.seq-slot { display: inline-flex; align-items: center; flex-wrap: wrap; min-width: .8em; min-height: .8em; border-radius: 3px; cursor: text; }
.seq-slot.sf { background: rgba(55,138,221,.07); outline: 1px solid rgba(55,138,221,.25); outline-offset: 1px; }
.seq-slot.empty-s::after { content: attr(data-ph); font-size: .45em; color: rgba(29,158,117,.5); font-family: sans-serif; padding: 2px; pointer-events: none; }
.seq-slot.dov { background: rgba(29,158,117,.10) !important; outline: 1px dashed var(--green) !important; }
.tnode { display: inline; outline: none; white-space: pre; caret-color: currentColor; min-width: 2px; font-family: inherit; color: inherit; }
.tnode:focus { outline: none; }
.sn-wrap { display: inline-flex; align-items: center; vertical-align: middle; position: relative; }
.sn-del  { position: absolute; top: -5px; right: -5px; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 7px; display: flex; align-items: center; justify-content: center; opacity: 0; cursor: pointer; z-index: 10; transition: opacity .12s; }
.sn-wrap:hover > .sn-del { opacity: 1; }


/* ═══════════════════════════════════════════════════════════════════════════
   DOCUMENT
   ═══════════════════════════════════════════════════════════════════════════ */
#doc-wrap { flex: 1; overflow: auto; background: #b8b8b8; display: flex; justify-content: center; align-items: flex-start; padding: 32px; }
#doc-wrap::-webkit-scrollbar { width: 8px; height: 8px; }
#doc-wrap::-webkit-scrollbar-thumb { background: rgba(0,0,0,.3); border-radius: 4px; }
#zoom-wrap { transform-origin: top center; transition: transform .15s; display: flex; flex-direction: column; align-items: center; gap: 20px; flex-shrink: 0; }

.doc-page { background: #fff; position: relative; box-shadow: 0 6px 32px rgba(0,0,0,.22), 0 1px 4px rgba(0,0,0,.10); flex-shrink: 0; overflow: visible; }
.page-overlay { position: absolute; inset: 0; pointer-events: none; z-index: 5; overflow: visible; }
.margin-rect  { position: absolute; border: 1px dashed rgba(55,138,221,.35); pointer-events: none; }
.bleed-rect   { position: absolute; border: 1px dashed rgba(216,90,48,.45); pointer-events: none; }
.crop-line    { position: absolute; background: rgba(0,0,0,.6); pointer-events: none; }
.pnum { position: absolute; font-size: 9px; color: #810909; font-family: Georgia,serif; pointer-events: none; z-index: 6; white-space: nowrap; }

.doc-pb { position: relative; width: 100%; }
.doc-pb:hover .doc-pb-acts { opacity: 1; }
.doc-pb.sel-pb { background: rgba(55,138,221,.05); border-radius: 3px; outline: 1.5px solid rgba(55,138,221,.25); outline-offset: 2px; }
.doc-pb-acts { position: absolute; right: -28px; top: 2px; display: flex; flex-direction: column; gap: 2px; opacity: 0; transition: opacity .12s; z-index: 20; }
.doc-pb-act  { width: 22px; height: 22px; border-radius: 3px; border: 1px solid #ddd; background: rgba(255,255,255,.95); cursor: pointer; font-size: 10px; display: flex; align-items: center; justify-content: center; color: #999; }
.doc-pb-act:hover { background: #fff; color: var(--text); }
.doc-editable { outline: none; width: 100%; min-height: 1.2em; cursor: text; }
.doc-editable:empty::before { content: attr(data-ph); color: #ccc; pointer-events: none; }

.fw { display: flex; align-items: center; flex-wrap: wrap; gap: 4px; }
.fw.fc { justify-content: center; } .fw.fl { justify-content: flex-start; } .fw.fr { justify-content: flex-end; }
.f-el-del { position: absolute; top: -6px; right: -6px; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 7px; display: flex; align-items: center; justify-content: center; opacity: 0; cursor: pointer; }
.f-el-del:hover { opacity: 1 !important; }
.floating-formula { position: absolute; cursor: move; z-index: 10; padding: 6px 10px; background: rgba(255,255,255,.92); border: 1px solid #e0e0e0; border-radius: 6px; box-shadow: 0 1px 4px rgba(0,0,0,.06); }
.floating-formula.sel-pb { outline: 1.5px solid rgba(55,138,221,.25); outline-offset: 2px; }
.float-badge { font-size: 8px; background: var(--accent-soft); color: var(--accent); border-radius: 3px; padding: 1px 4px; margin-bottom: 4px; display: block; }


/* ═══════════════════════════════════════════════════════════════════════════
   MODALS
   ═══════════════════════════════════════════════════════════════════════════ */
#pm { position: fixed; inset: 0; background: rgba(0,0,0,.7); z-index: 1000; display: none; align-items: center; justify-content: center; backdrop-filter: blur(6px); }
#pm.show { display: flex; }
.pm-box { background: #fff; border-radius: 12px; width: 760px; height: 88vh; display: flex; flex-direction: column; overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,.4); }
.pm-bar { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid #eee; background: #f8f8f8; flex-shrink: 0; }
.pm-bar h3 { font-size: 13px; font-weight: 600; flex: 1; }
#pm-info { font-size: 10px; color: #999; }
.pm-actions { display: flex; gap: 6px; margin-left: auto; }
.pm-actions .full-btn { width: auto; padding: 5px 12px; }
#pf-wrap { flex: 1; overflow: auto; background: #999; display: flex; justify-content: center; padding: 24px; }
#pframe { border: none; background: #fff; box-shadow: 0 2px 12px rgba(0,0,0,.2); }

@media print {
  #top, #panel-left, #panel-right, #bot { display: none !important; }
  #doc-wrap { background: #fff !important; overflow: visible !important; padding: 0 !important; }
  #zoom-wrap { transform: none !important; }
  .doc-page { box-shadow: none !important; margin: 0 !important; }
  .page-overlay, .doc-pb-acts, .pnum { display: none !important; }
  .doc-pb.sel-pb { outline: none !important; background: transparent !important; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   DOC MODE — ADDITIONS
   ═══════════════════════════════════════════════════════════════════════════ */

/* Insert-into-doc button: #7BC800 green, auto width */
.tbtn.accent {
  background: rgba(123,200,0,.18);
  color: #7BC800;
  width: auto;
  padding: 0 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .01em;
}
.tbtn.accent:hover { background: rgba(123,200,0,.28); color: #5a9200; }

/* Doc T tool cursor */
#doc-wrap.doc-crosshair { cursor: crosshair; }

/* Eq-snapshot positioned container */
.eq-snapshot-wrap {
  position: relative;
  display: inline-block;
  overflow: visible;
  flex-shrink: 0;
}

/* Canvas textbox in doc (inline, flow position) */
.doc-canvas-tb {
  border-left: 2px solid rgba(123,200,0,.4);
  background: rgba(123,200,0,.04);
  margin: 2px 0;
  border-radius: 0 3px 3px 0;
  cursor: text;
}
/* Editable state focus ring */
.doc-canvas-tb:focus {
  outline: none;
  border-left-color: #7BC800;
  background: rgba(123,200,0,.08);
  box-shadow: 0 0 0 1px rgba(123,200,0,.25);
}
/* Placeholder */
.doc-canvas-tb:empty::before {
  content: attr(data-ph);
  color: rgba(0,0,0,.25);
  pointer-events: none;
}

/* Display tab rows */
.disp-row {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  padding: 5px 6px;
  border-radius: 5px;
  border: 1px solid #eee;
  background: #fff;
  margin-bottom: 4px;
  cursor: pointer;
  transition: background .1s;
}
.disp-row:hover { background: #f5f5f5; }
.disp-row.sel { background: var(--accent-soft); border-color: var(--accent); }
.disp-info { flex: 1; min-width: 0; }
.disp-mode-row { display: flex; gap: 3px; margin-top: 4px; flex-wrap: wrap; }
.disp-mode-btn {
  padding: 2px 7px; font-size: 9px; border: 1px solid #ddd; border-radius: 3px;
  background: var(--bg2); color: var(--text3); cursor: pointer; transition: all .1s; font-weight: 500;
}
.disp-mode-btn:hover:not(:disabled) { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.disp-mode-btn.on { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); font-weight: 600; }
.disp-mode-btn:disabled { opacity: .4; cursor: default; }