/* ── Colour scheme ── */
:root{--bg:#fff;--fg:#222;--gr:#ddd;--rf:#e6194b;--rff:rgba(230,25,75,.07);--gx:#3cb44b;--gy:#4363d8;--gz:#f58231;--adc:#42d4f4;--adf:rgba(66,212,244,.14);--tr:#911eb4;--ax:#aaa;--lb:#888;--cr:#ee0000;--bd:#ddd;--trbg:#f8f8f8}
body.vscode-dark{--bg:#1e1e1e;--fg:#ddd;--gr:#3a3a3a;--rf:#ff6b8a;--rff:rgba(255,107,138,.05);--gx:#5cdb5c;--gy:#6b8cff;--gz:#ffb347;--adc:#5ce1f4;--adf:rgba(92,225,244,.10);--tr:#d45cff;--ax:#666;--lb:#999;--cr:#ff4444;--bd:#3a3a3a;--trbg:#252525}
/* ── Theme: One Light (Atom‑inspired bright) ── */
body.theme-onelight{--bg:#fafafa;--fg:#383a42;--gr:#e5e5e6;--rf:#e45649;--rff:rgba(228,86,73,.08);--gx:#50a14f;--gy:#4078f2;--gz:#c18401;--adc:#0184bc;--adf:rgba(1,132,188,.12);--tr:#a626a4;--ax:#a0a1a7;--lb:#696c77;--cr:#e45649;--bd:#e5e5e6;--trbg:#f5f5f5}
/* ── Theme: One Dark Pro (cool dark) ── */
body.theme-onedark{--bg:#282c34;--fg:#abb2bf;--gr:#3e4452;--rf:#e06c75;--rff:rgba(224,108,117,.10);--gx:#98c379;--gy:#61afef;--gz:#e5c07b;--adc:#56b6c2;--adf:rgba(86,182,194,.14);--tr:#c678dd;--ax:#5c6370;--lb:#828997;--cr:#e06c75;--bd:#3e4452;--trbg:#2c313a}
/* ── Theme: Dracula (purple dark) ── */
body.theme-dracula{--bg:#282a36;--fg:#f8f8f2;--gr:#44475a;--rf:#ff5555;--rff:rgba(255,85,85,.10);--gx:#50fa7b;--gy:#8be9fd;--gz:#ffb86c;--adc:#8be9fd;--adf:rgba(139,233,253,.14);--tr:#bd93f9;--ax:#6272a4;--lb:#8890b8;--cr:#ff5555;--bd:#44475a;--trbg:#2e3040}
/* ── Theme: Nord (frosty dark) ── */
body.theme-nord{--bg:#2e3440;--fg:#eceff4;--gr:#434c5e;--rf:#bf616a;--rff:rgba(191,97,106,.10);--gx:#a3be8c;--gy:#81a1c1;--gz:#d08770;--adc:#88c0d0;--adf:rgba(136,192,208,.14);--tr:#b48ead;--ax:#4c566a;--lb:#7b8898;--cr:#bf616a;--bd:#434c5e;--trbg:#353b49}
/* ── Theme: GitHub Light (clean white) ── */
body.theme-githublight{--bg:#ffffff;--fg:#24292f;--gr:#d0d7de;--rf:#cf222e;--rff:rgba(207,34,46,.07);--gx:#1a7f37;--gy:#0969da;--gz:#bc4c00;--adc:#0969da;--adf:rgba(9,105,218,.10);--tr:#8250df;--ax:#afb8c1;--lb:#656d76;--cr:#cf222e;--bd:#d0d7de;--trbg:#f6f8fa}
/* ── Theme: GitHub Dark (muted dark) ── */
body.theme-github{--bg:#0d1117;--fg:#c9d1d9;--gr:#21262d;--rf:#ff7b72;--rff:rgba(255,123,114,.08);--gx:#7ee787;--gy:#79c0ff;--gz:#ffa657;--adc:#a5d6ff;--adf:rgba(165,214,255,.12);--tr:#d2a8ff;--ax:#30363d;--lb:#8b949e;--cr:#ff7b72;--bd:#21262d;--trbg:#161b22}
/* ── Layout ── */
*{margin:0;padding:0;box-sizing:border-box}
body{font:13px -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--fg);overflow:hidden;height:100vh;user-select:none;display:flex;flex-direction:column}
#main{display:flex;flex:1;overflow:hidden}
#left{display:flex;flex-direction:column;flex:1;overflow:hidden;min-width:0}
#right{width:0;overflow:hidden;position:relative;border-left:1px solid var(--gr);transition:width .25s}
#right.open{width:500px}
#right>.handle{position:absolute;left:0;top:0;bottom:0;width:5px;cursor:col-resize;z-index:20}
#right>.handle:hover{background:var(--adc);opacity:.3}
#kpane{position:absolute;inset:0;display:none}
#kpane.on{display:block}
#kpane canvas{position:absolute;top:0;left:0;display:block;width:100%;height:100%}
#kg{z-index:0;pointer-events:none}
#kc{z-index:1;pointer-events:auto;background:transparent}
#rc{position:absolute;top:4px;left:4px;z-index:10;display:flex;flex-direction:column;gap:2px}
#rc button{background:var(--gr);border:1px solid var(--ax);color:var(--fg);padding:2px 6px;border-radius:3px;cursor:pointer;font-size:10px}
#rc button:hover{opacity:.75}
#tb{display:flex;align-items:center;gap:6px;padding:5px 10px;background:var(--bg);border-bottom:1px solid var(--gr);font-size:11px;flex-shrink:0;flex-wrap:wrap}
#tb button{background:var(--gr);border:1px solid var(--ax);color:var(--fg);padding:2px 7px;border-radius:3px;cursor:pointer;font-size:11px}
#tb button:hover{opacity:.75}
#tb button:disabled{opacity:.45;cursor:not-allowed}
#tb select{background:var(--gr);border:1px solid var(--ax);color:var(--fg);padding:2px 4px;border-radius:3px;font-size:11px;cursor:pointer}
#tb .sep{width:1px;height:16px;background:var(--ax);margin:0 3px}
#tb .lg{display:flex;gap:7px;row-gap:2px;align-items:center;font-size:11px;flex-wrap:wrap}
#tb .li{cursor:pointer;display:flex;align-items:center;gap:3px;padding:1px 4px;border-radius:3px;opacity:1;transition:opacity .15s}
#tb .li.off{opacity:.30}
#tb .ld{width:10px;height:10px;border-radius:2px;border:1px solid rgba(0,0,0,.15)}
#tb .cur{font:11px monospace;color:var(--cr);margin-left:auto;min-width:300px;text-align:right;white-space:nowrap}
#tb .ulbl{font-size:10px;color:var(--lb);margin:0 1px}
#viewerNotice{display:none;flex-shrink:0;padding:5px 10px;border-bottom:1px solid #b8860b;background:rgba(218,165,32,.16);color:var(--fg);font-size:11px;line-height:1.35;white-space:normal}
#viewerNotice .notice-action{margin-left:8px;background:var(--gr);border:1px solid #b8860b;color:var(--fg);padding:2px 7px;border-radius:3px;cursor:pointer;font-size:11px;white-space:nowrap}
#kspaceSafetyOverlay{position:fixed;inset:0;background:rgba(0,0,0,.48);z-index:540;display:flex;align-items:center;justify-content:center;padding:16px;backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px)}
#kspaceSafetyCard{width:min(520px,100%);background:var(--bg);border:1px solid #b8860b;border-radius:10px;padding:18px 20px;box-shadow:0 10px 36px rgba(0,0,0,.3)}
#kspaceSafetyTitle{font-weight:700;font-size:15px;margin-bottom:9px;color:var(--fg)}
#kspaceSafetyText{font-size:12px;line-height:1.5;color:var(--fg);white-space:pre-line}
#kspaceSafetyActions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px;flex-wrap:wrap}
#kspaceSafetyActions button{background:var(--gr);border:1px solid var(--ax);color:var(--fg);padding:7px 11px;border-radius:5px;cursor:pointer;font-size:12px}
#kspaceSafetyActions #kspaceSafetyProceed{background:#9b1c1c;border-color:#c43b3b;color:#fff}
#kspaceSafetyActions button:disabled{opacity:.5;cursor:not-allowed}
#cc{flex:1;overflow:hidden;position:relative;cursor:crosshair}
#cc.pan{cursor:grabbing}
#moc{position:absolute;inset:0;pointer-events:none;z-index:2}
canvas{display:block}
/* ── Minimap overview strip ── */
#mmap{height:22px;border-bottom:1px solid var(--gr);background:var(--trbg);flex-shrink:0;cursor:pointer;position:relative}
#mmap canvas{display:block;width:100%;height:100%}
/* ── Progress overlay (centered card) ── */
#poverlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.35);z-index:500;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px)}
#pcard{background:var(--bg);border:1px solid var(--gr);border-radius:10px;padding:24px 32px;min-width:280px;max-width:380px;text-align:center;box-shadow:0 8px 32px rgba(0,0,0,.18)}
#pspinner{width:32px;height:32px;border:3px solid var(--gr);border-top-color:var(--adc);border-radius:50%;animation:spin .7s linear infinite;margin:0 auto 12px}
@keyframes spin{to{transform:rotate(360deg)}}
#ptext{font-size:12px;color:var(--fg);margin-bottom:10px;line-height:1.4}
#pbar2{height:5px;background:var(--gr);border-radius:3px;overflow:hidden;margin:0 0 6px}
#pfill2{height:100%;width:0%;background:var(--adc);border-radius:3px;transition:width .4s ease}
#ppct{font-size:11px;color:var(--lb);font-family:monospace}
#tt{position:absolute;pointer-events:none;background:rgba(0,0,0,.88);color:#fff;padding:5px 9px;border-radius:4px;font:11px monospace;white-space:pre;display:none;z-index:100;line-height:1.35;max-width:340px}
/* ── Touch & mobile ── */
#mc,#kc,#mmc,#sgImg,#sgOvl,#spCanvas{touch-action:none}
body{overscroll-behavior:none}
#menuBtn{display:none;background:var(--gr);border:1px solid var(--ax);color:var(--fg);font-size:14px;line-height:1;padding:2px 5px;border-radius:3px;cursor:pointer;min-width:26px;min-height:26px}
#tbMore{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
/* ── Vertical (portrait) layout ── */
body.layout-vertical #main{flex-direction:column}
body.layout-vertical #left{flex:1;min-height:0}
body.layout-vertical #right{width:100%!important;height:0;border-left:none;border-top:1px solid var(--gr);transition:height .25s;flex-shrink:0}
body.layout-vertical #right.open{height:300px;width:100%!important}
body.layout-vertical #right .handle{left:0;right:0;top:0;width:100%;height:5px;cursor:row-resize;bottom:auto}
body.layout-vertical #rc{flex-direction:row;gap:4px;top:6px;left:4px}
body.layout-vertical #sgBody{flex-direction:row}
body.layout-vertical #sgSplit{cursor:col-resize}
body.layout-vertical #rc button{padding:4px 8px;font-size:10px}
/* ── Narrow / touch-device toolbar ── */
@media(max-width:768px),(pointer:coarse){
  #tb{padding:4px 6px;gap:4px;position:relative}
  #tb .sep{margin:0 2px}
  #tb .cur{min-width:0;font-size:10px;flex-basis:100%;text-align:left;margin-left:0;order:99}
  #menuBtn{display:inline-block}
  #zi,#zo,#zf,#zr{display:none}
  #zr+.sep{display:none}
  #panelBtn{order:1}
  #tb .lg{order:2;gap:4px;row-gap:1px}
  #tbMore{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);border:1px solid var(--gr);border-top:none;z-index:200;padding:6px 8px;flex-direction:column;align-items:flex-start;gap:6px;box-shadow:0 4px 12px rgba(0,0,0,.15)}
  #tbMore.open{display:flex}
  #cc{cursor:crosshair}
  #tt{max-width:260px}
  #kspaceSafetyCard{padding:17px 16px}
  #kspaceSafetyActions{flex-direction:column}
  #kspaceSafetyActions button{width:100%;min-height:42px}
}
/* ── Spectrogram / spectrum analysis pane ───────────────────────────── */
#spane{position:absolute;inset:0;display:none;flex-direction:column;overflow:hidden}
#spane.on{display:flex}
#sgTools{flex:0 0 auto;display:flex;align-items:center;flex-wrap:wrap;gap:3px;padding:3px 5px 3px 8px;border-bottom:1px solid var(--gr);background:var(--trbg)}
#sgTools button{background:var(--gr);border:1px solid var(--ax);color:var(--fg);padding:1px 5px;border-radius:3px;cursor:pointer;font-size:10px;line-height:1.5}
#sgTools button:hover{opacity:.75}
#sgTools button:disabled{opacity:.4;cursor:not-allowed}
#sgTools button.sg-glyph{min-width:22px;font-size:11px;text-align:center}
#sgTools button.on{background:var(--adc);border-color:var(--adc);color:#fff}
#sgTools select{background:var(--gr);border:1px solid var(--ax);color:var(--fg);padding:1px 2px;border-radius:3px;font-size:10px;cursor:pointer;max-width:78px}
#sgTools input[type=number]{background:var(--gr);border:1px solid var(--ax);color:var(--fg);padding:1px 3px;border-radius:3px;font-size:10px;width:52px}
#sgTools input[type=range]{width:56px;accent-color:var(--adc)}
#sgTools .sep{width:1px;height:14px;background:var(--ax);margin:0 2px;flex-shrink:0}
#sgTools .ulbl{font-size:10px;color:var(--lb)}
#sgTools .lg{display:flex;gap:5px;align-items:center;flex-wrap:wrap;font-size:10px}
#sgTools .lg .li{cursor:pointer;display:flex;align-items:center;gap:3px;padding:0 3px;border-radius:3px;opacity:1;transition:opacity .15s}
#sgTools .lg .li.off{opacity:.30}
#sgTools .lg .ld{width:9px;height:9px;border-radius:2px;border:1px solid rgba(0,0,0,.15)}
#sgBody{flex:1 1 auto;display:flex;flex-direction:column;min-height:0;min-width:0}
#sgPane{position:relative;flex:3 1 0%;min-height:0;min-width:0;overflow:hidden}
#spPane{position:relative;flex:1 1 0%;min-height:0;min-width:0;overflow:hidden}
#sgPane canvas,#spPane canvas{position:absolute;top:0;left:0;display:block;width:100%;height:100%}
#sgImg{z-index:0;pointer-events:none}
#sgOvl{z-index:1;pointer-events:auto;background:transparent;outline:none}
#sgOvl:focus-visible{box-shadow:inset 0 0 0 2px var(--adc)}
#sgSplit{flex:0 0 5px;cursor:row-resize;background:transparent;z-index:5}
#sgSplit:hover{background:var(--adc);opacity:.3}
/* Recompute keeps the previous image at reduced opacity rather than blanking
   the pane, so a pan never flashes empty. */
#sgPane.busy #sgImg{opacity:.55}
#sgBusy{display:none;position:absolute;top:6px;right:6px;width:14px;height:14px;border:2px solid var(--gr);border-top-color:var(--adc);border-radius:50%;animation:spin .7s linear infinite;z-index:6}
#sgPane.busy #sgBusy{display:block}
#sgReadout{flex:0 0 auto;font:10px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:var(--lb);padding:2px 6px;border-top:1px solid var(--gr);line-height:1.35;max-height:56px;overflow-y:auto;white-space:normal}
#sgReadout .sg-warn{color:#b8860b}
body.sg-wl-drag{cursor:ns-resize}
body.sg-split-drag{cursor:row-resize}
body.layout-vertical.sg-split-drag{cursor:col-resize}
@media(max-width:768px),(pointer:coarse){
  #sgTools{gap:4px;padding:4px 5px}
  #sgTools button{min-height:24px;padding:2px 7px}
  #sgTools input[type=number]{width:56px;min-height:22px}
  #sgSplit{flex-basis:12px}
}