:root{
    --bg:#08080f; --panel:#11111c; --panel-2:#171727;
    --line:#262638; --text:#e9e9f2; --muted:#a8a8c6;
    --cyan:#35e6ea; --mag:#ff3d7f;
    --mono:'Space Mono', ui-monospace, monospace;
    --read:'Space Grotesk', ui-sans-serif, system-ui, sans-serif;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html,body{background:var(--bg);}
  body{
    font-family:var(--mono);
    color:var(--text); min-height:100vh;
    padding:28px 18px 48px;
    display:flex; flex-direction:column; align-items:center;
  }
  /* readable prose in Space Grotesk (mono stays for chrome: labels, values, buttons) */
  .sub,.note,.tl-hint,.faq details p,.cliplen-note,.mask-toggle span,.mask-inv,.site-foot{
    font-family:var(--read); letter-spacing:0;
  }
  .wrap{width:100%; max-width:880px;}

  header{margin-bottom:14px;}
  .kicker{font-size:11px; letter-spacing:.26em; color:var(--muted); text-transform:uppercase;}
  h1{
    font-size:24px; font-weight:700; letter-spacing:.04em; margin-top:3px;
    line-height:1; position:relative; display:inline-block;
  }
  h1::before,h1::after{
    content:'Glitchest'; position:absolute; left:0; top:0; opacity:.85;
  }
  h1::before{color:var(--cyan); animation:gl1 2.6s infinite steps(2);}
  h1::after{color:var(--mag); animation:gl2 3.1s infinite steps(2);}
  h1 .real{position:relative; z-index:2;}
  @keyframes gl1{0%,92%,100%{transform:translate(0,0);opacity:0;}93%,97%{transform:translate(-2px,1px);opacity:.8;}}
  @keyframes gl2{0%,88%,100%{transform:translate(0,0);opacity:0;}89%,95%{transform:translate(2px,-1px);opacity:.8;}}
  .sub{font-size:14px; color:var(--muted); margin-top:8px; line-height:1.6; max-width:60ch;}

  .sticky-top{
    position:sticky; top:0; z-index:20;
    background:var(--bg); padding-bottom:10px; margin-bottom:6px;
    border-bottom:1px solid var(--line);
  }
  /* preview shrink-wraps the media aspect — no wasted black letterbox bars */
  .stage{
    position:relative; width:100%; margin-bottom:10px;
    text-align:center; font-size:0;
  }
  .frame{
    position:relative; display:inline-block; max-width:100%;
    overflow:hidden; background:#000;
    border:1px solid var(--line); border-radius:10px; line-height:0;
    container-type:inline-size;   /* lets .wm scale with the frame, like the export */
  }
  #gl{display:block; max-width:100%; max-height:66vh; width:auto; height:auto;}
  /* Mirrors the exported corner mark exactly: same lower-left anchor, same pill.
     The offsets come from --wm-left/--wm-bottom, which resize() recomputes per
     aspect ratio, so what you see here is what lands in the file. */
  .wm{
    position:absolute; z-index:3;
    left:var(--wm-left,5%); bottom:var(--wm-bottom,10%);
    display:inline-flex; align-items:center; gap:.4em;
    padding:.34em .55em; border-radius:.45em;
    background:rgba(7,7,14,.52);
    font-size:clamp(11px,3.4cqw,20px); font-weight:700; letter-spacing:.06em;
    color:#fff; pointer-events:none; user-select:none; line-height:1;
  }
  .wm small{ display:none; }        /* the export carries the mark, not a caption */
  .wm img{
    height:1.45em; width:1.45em; border-radius:.28em; display:block;
  }
  .wm.off{display:none;}
  .badge{
    position:absolute; left:14px; top:12px; z-index:3;
    font-size:11px; letter-spacing:.12em; color:var(--cyan);
    background:rgba(0,0,0,.5); padding:4px 8px; border-radius:4px;
  }
  .mask-outline{
    position:absolute; z-index:2; pointer-events:none;
    border:1.5px dashed var(--cyan);
    box-shadow:0 0 0 9999px rgba(0,0,0,0.28);
    opacity:0; transition:opacity .25s ease;
  }
  .mask-outline.on{opacity:1;}
  .mask-outline.ellipse{border-radius:50%;}
  .mask-outline.inv{box-shadow:none; background:rgba(0,0,0,0.0);}

  .mask-panel{margin-bottom:18px; padding:13px 14px; border:1px solid var(--line); border-radius:8px; background:var(--panel-2);}
  .mask-head{display:flex; flex-wrap:wrap; gap:12px 18px; align-items:center; justify-content:space-between;}
  .mask-toggle{display:flex; align-items:center; gap:8px; font-size:12px; color:var(--text); cursor:pointer;}
  .mask-toggle input{width:15px; height:15px; accent-color:var(--cyan);}
  .mask-opts{display:none; gap:14px; align-items:center;}
  .mask-opts.on{display:flex; flex-wrap:wrap;}
  .mask-seg{display:inline-flex; border:1px solid var(--line); border-radius:6px; overflow:hidden;}
  .mask-seg button{border:none; border-radius:0; padding:6px 11px; font-size:11px; background:transparent;}
  .mask-seg button.on{background:var(--cyan); color:#04141a;}
  .mask-inv{display:flex; align-items:center; gap:6px; font-size:11px; color:var(--muted); cursor:pointer;}
  .mask-inv input{width:14px; height:14px; accent-color:var(--cyan);}
  .mask-sliders{display:none; grid-template-columns:1fr 1fr; gap:10px 18px; margin-top:13px;}
  .mask-sliders.on{display:grid;}
  .mask-ctl{display:flex; align-items:center; gap:10px;}
  .mask-ctl span{font-size:11px; color:var(--muted); width:48px; flex:none;}
  .mask-ctl input{flex:1;}
  @media (max-width:560px){ .mask-sliders{grid-template-columns:1fr;} }

  .row{display:flex; flex-wrap:wrap; gap:8px; margin-bottom:14px;}
  button{
    font-family:var(--mono); font-size:13px; color:var(--text);
    background:var(--panel-2); border:1px solid var(--line);
    padding:11px 16px; min-height:44px; border-radius:8px; cursor:pointer;
    display:inline-flex; align-items:center; justify-content:center; gap:7px;
    transition:border-color .15s, color .15s, background .15s, transform .1s;
  }
  button:hover{border-color:var(--cyan); color:var(--text);}
  button:active{transform:scale(.97);}
  button:disabled{opacity:.4; cursor:not-allowed;}
  button.ghost{background:transparent;}

  .presets{margin-bottom:18px;}
  .presets .lab{font-size:11px; letter-spacing:.2em; color:var(--muted); margin-bottom:8px; text-transform:uppercase;}
  /* timeline caption: a quiet label, not a button — points to the real action (the box) */
  .tl-lab{font-family:var(--mono); font-size:12px; letter-spacing:.03em; color:var(--muted); margin-bottom:10px;}
  .tl-lab b{color:var(--cyan); font-weight:700;}
  .chip{position:relative;}
  .chip.on{
    border-color:var(--cyan); color:var(--cyan);
    box-shadow:inset 0 0 0 1px var(--cyan);
  }

  .knobs{
    background:var(--panel); border:1px solid var(--line);
    border-radius:10px; padding:10px; margin-bottom:14px;
  }
  .cat{
    border:1px solid var(--line); border-radius:9px;
    overflow:hidden; background:var(--panel-2);
  }
  .cat + .cat{ margin-top:8px; }

  /* --- accordion header (full-width clickable button) --- */
  .cat-head{
    display:flex; align-items:center; gap:11px; width:100%;
    background:transparent; border:none; border-radius:0;
    padding:15px 16px; cursor:pointer; text-align:left;
    transition:background .15s;
  }
  .cat-head:hover{ background:rgba(45,226,230,0.05); border-color:transparent; }
  .cat-head:active{ transform:none; }
  .cat-chev{
    color:var(--muted); font-size:11px; line-height:1; flex:none;
    transition:transform .25s ease, color .15s;
    display:inline-block;
  }
  .cat.open .cat-chev{ transform:rotate(90deg); color:var(--cyan); }
  .cat-head:hover .cat-chev{ color:var(--cyan); }
  .cat-name{
    font-size:11px; letter-spacing:.2em; color:var(--text);
    text-transform:uppercase; font-weight:700; flex:1;
  }
  .cat.open .cat-name{ color:var(--cyan); }
  .cat-badge{
    font-size:10px; letter-spacing:.04em; color:var(--mag);
    border:1px solid var(--mag); border-radius:20px; padding:2px 9px;
    opacity:0; transition:opacity .15s; flex:none;
  }
  .cat-badge.on{ opacity:1; }
  .cat-count{
    font-size:11px; color:var(--muted); flex:none;
    min-width:18px; text-align:right;
  }
  .cat.open .cat-count{ display:none; }

  /* --- accordion body (animated open/close) --- */
  .cat-body{
    display:grid; grid-template-rows:0fr;
    transition:grid-template-rows .28s ease;
  }
  .cat.open .cat-body{ grid-template-rows:1fr; }
  .cat-inner{ overflow:hidden; min-height:0; }
  .cat-tools{
    display:flex; align-items:center; gap:9px; flex-wrap:wrap;
    padding:4px 16px 14px; margin-top:2px;
  }
  .cat-rand-label{ font-size:11px; color:var(--muted); flex:none; }
  .cat-deg{ width:90px; }
  .cat-deg-val{ font-size:11px; color:var(--cyan); min-width:24px; text-align:right; }
  .cat-rand{
    font-size:11px; padding:6px 13px;
    border-color:var(--mag); color:var(--mag); flex:none;
  }
  .cat-grid{
    display:grid; grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
    gap:20px 26px; padding:6px 16px 20px;
  }

  /* --- individual knob --- */
  .ctl-top{display:flex; justify-content:space-between; align-items:baseline; margin-bottom:11px;}
  .ctl-label{font-size:12.5px; color:var(--text);}
  .ctl-val{font-size:12.5px; color:var(--cyan); font-weight:700;}
  input[type=range]{
    -webkit-appearance:none; appearance:none;
    width:100%; height:6px; border-radius:3px;
    background:var(--line); outline:none; cursor:pointer;
    touch-action:none; /* let JS handle drag, stop page scroll */
  }
  input[type=range]::-webkit-slider-thumb{
    -webkit-appearance:none; appearance:none;
    width:20px; height:20px; border-radius:50%;
    background:var(--cyan); border:3px solid var(--bg);
    box-shadow:0 1px 4px rgba(0,0,0,.5);
    transition:transform .1s;
  }
  input[type=range]::-webkit-slider-thumb:active{ transform:scale(1.25); }
  input[type=range]::-moz-range-thumb{
    width:20px; height:20px; border-radius:50%;
    background:var(--cyan); border:3px solid var(--bg); border-color:var(--bg);
    box-shadow:0 1px 4px rgba(0,0,0,.5);
  }
  #s-tcolor{
    height:12px; border-radius:6px;
    background:linear-gradient(to right,#ff0000,#ffff00,#00ff00,#00ffff,#0000ff,#ff00ff,#ff0000);
  }
  #s-tcolor::-webkit-slider-thumb{
    background:#ffffff; border:3px solid #11111c;
    width:22px; height:22px;
  }
  #s-tcolor::-moz-range-thumb{
    background:#ffffff; border:3px solid #11111c;
    width:22px; height:22px;
  }
  /* bigger touch targets + more breathing room on phones */
  @media (max-width:560px){
    .cat-grid{ grid-template-columns:1fr; gap:24px; padding:6px 14px 22px; }
    .cat-head{ padding:17px 15px; }
    input[type=range]{ height:8px; border-radius:4px; }
    input[type=range]::-webkit-slider-thumb{ width:26px; height:26px; }
    input[type=range]::-moz-range-thumb{ width:26px; height:26px; }
    #s-tcolor::-webkit-slider-thumb{ width:28px; height:28px; }
    #s-tcolor::-moz-range-thumb{ width:28px; height:28px; }
    .ctl-top{ margin-bottom:13px; }
    .ctl-label, .ctl-val{ font-size:14px; }
    button{ min-height:48px; font-size:14px; }
    .chip{ flex:1 1 calc(50% - 5px); }
    .foot-btns button{ min-height:54px; }
    h1{ font-size:30px; }
    .sub{ font-size:14.5px; }
  }

  .foot{
    display:flex; flex-wrap:wrap; gap:10px; align-items:center;
    justify-content:space-between; margin-bottom:10px;
  }
  .toggle{display:flex; align-items:center; gap:8px; font-size:12px; color:var(--muted); cursor:pointer;}
  .toggle input{accent-color:var(--cyan); width:15px; height:15px;}
  .note{font-size:13px; color:var(--muted); line-height:1.65; max-width:68ch;}
  .site-foot{
    margin-top:34px; padding-top:20px; border-top:1px solid var(--line);
    text-align:center; font-size:12px; color:var(--muted);
  }
  .site-foot a{color:var(--muted); text-decoration:none;}
  .site-foot a:hover{color:var(--cyan);}
  .foot-sep{margin:0 8px; color:var(--line);}
  .foot-copy{margin-top:10px; font-size:11px; color:var(--muted);}
  .note b{color:var(--text); font-weight:700;}
  #status{font-size:11px; color:var(--mag); min-height:15px; margin-top:4px;}

  .foot-btns{display:flex; gap:10px; width:100%;}
  .foot-btns button{flex:1; min-height:50px; font-size:14px;}
  #btnShot{background:transparent;}
  .vol-wrap{display:flex; align-items:center; gap:6px;}
  .vol-btn{
    padding:5px 8px; display:flex; align-items:center; justify-content:center;
  }
  .vol-btn svg{display:block; width:18px; height:18px;}
  #volSlider{width:84px; accent-color:var(--cyan); cursor:pointer;}
  #btnExport{background:var(--cyan); border-color:var(--cyan); color:#04141a; font-weight:700; letter-spacing:.02em;}
  #btnExport:hover{background:var(--cyan); color:#04141a; filter:brightness(1.08);}
  .exp-bar{display:none; margin-bottom:12px;}
  .exp-track{
    height:6px; background:var(--panel-2);
    border:1px solid var(--line); border-radius:3px; overflow:hidden;
  }
  .exp-fill{height:100%; width:0%; background:var(--cyan); transition:width .2s;}
  .exp-label{display:block; font-size:11px; color:var(--cyan); margin-top:6px;}

  .tl-panel{
    background:var(--panel); border:1px solid var(--line);
    border-radius:10px; padding:18px 20px; margin-bottom:14px;
  }
  .tl-track{
    position:relative; width:100%;
    background:var(--panel-2); border:1px solid var(--line);
    border-radius:6px; overflow:hidden; margin:6px 0 10px;
    touch-action:none;
  }
  .tl-curve{
    position:relative; width:100%; height:128px; cursor:crosshair;
  }
  #env-svg{position:absolute; left:0; top:0; width:100%; height:100%; display:block; pointer-events:none;}
  #env-fill{fill:rgba(45,226,230,0.16);}
  #env-curve{fill:none; stroke:var(--cyan); stroke-width:2.5;}
  #env-grid line{stroke:var(--line); stroke-width:1;}
  #env-dots{position:absolute; left:0; top:0; width:100%; height:100%; pointer-events:none;}
  .env-dot{
    fill:var(--bg); stroke:var(--cyan); stroke-width:2.5;
    cursor:grab; pointer-events:auto;
  }
  .env-dot:hover{fill:var(--cyan);}
  .env-dot.drag{cursor:grabbing; fill:var(--cyan);}
  #env-head{stroke:var(--mag); stroke-width:2; pointer-events:none;}
  #scrub-strip{
    position:relative; width:100%; height:28px; margin-top:10px;
    background:rgba(255,42,109,0.12); border-top:1px solid rgba(255,42,109,0.5);
    cursor:ew-resize;
  }
  #scrub-strip::after{
    content:'\25B8 drag to scrub \2014 playback position'; position:absolute; left:9px; top:7px;
    font-size:9px; letter-spacing:.07em; color:rgba(255,42,109,0.85); pointer-events:none; white-space:nowrap;
  }
  #scrub-head{
    position:absolute; top:0; bottom:0; width:2px; background:var(--mag);
    pointer-events:none;
  }
  .tl-read{
    position:absolute; right:10px; top:7px;
    font-size:11px; color:var(--cyan); pointer-events:none; z-index:2;
  }
  .tl-hint{font-size:12.5px; color:var(--muted); line-height:1.55; margin-top:2px; max-width:62ch;}
  .cliplen{
    display:none; align-items:center; gap:8px; margin-top:12px;
    padding-top:12px; border-top:1px solid var(--line);
  }
  .cliplen.on{display:flex;}
  .cliplen label{font-size:11px; color:var(--text);}
  .cliplen input{
    width:64px; background:var(--bg); border:1px solid var(--line);
    color:var(--text); font-family:inherit; font-size:13px;
    padding:5px 7px; border-radius:6px;
  }
  .cliplen input:focus{outline:none; border-color:var(--cyan);}
  .cliplen-unit{font-size:11px; color:var(--muted);}
  .cliplen-note{font-size:10px; color:var(--muted); margin-left:4px;}
  .tl-reset{
    font-size:10px; padding:3px 9px; margin-top:2px;
  }
  .tl-btns{display:flex; gap:6px;}
  .err{
    padding:24px; text-align:center; color:var(--mag); font-size:13px; line-height:1.7;
  }
  .faq{margin-top:22px; border-top:1px solid var(--line); padding-top:16px;}
  .faq-h{font-size:11px; letter-spacing:.28em; color:var(--muted); text-transform:uppercase; margin-bottom:10px;}
  .faq details{border-bottom:1px solid var(--line); padding:9px 0;}
  .faq summary{cursor:pointer; font-size:13.5px; color:var(--text); list-style:none; padding:4px 0; min-height:34px; display:flex; align-items:center;}
  .faq summary::-webkit-details-marker{display:none;}
  .faq summary::before{content:'+ '; color:var(--cyan);}
  .faq details[open] summary::before{content:'\2212 '; color:var(--mag);}
  .faq details p{font-size:13px; color:var(--muted); line-height:1.6; margin-top:7px; padding-left:14px; max-width:64ch;}

  /* editor top nav */
  .app-nav{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px;padding-bottom:13px;border-bottom:1px solid var(--line);flex-wrap:wrap;}
  .app-brand{font-family:var(--mono);font-weight:700;font-size:16px;letter-spacing:.06em;color:var(--text);text-decoration:none;}
  .app-brand span{color:var(--mag);}
  .app-nav-links{display:flex;gap:20px;font-family:var(--mono);font-size:13px;}
  .app-nav-links a{color:var(--muted);text-decoration:none;padding:6px 2px;}
  .app-nav-links a:hover{color:var(--cyan);}
  /* share / load a look */
  .share-panel{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:4px 16px;margin-bottom:14px;}
  .share-summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:8px;min-height:48px;font-size:11px;letter-spacing:.2em;color:var(--muted);text-transform:uppercase;font-family:var(--mono);user-select:none;touch-action:manipulation;}
  .share-summary::-webkit-details-marker{display:none;}
  .share-chev{margin-left:auto;width:8px;height:8px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg);transition:transform .18s ease;}
  .share-panel[open] .share-chev{transform:rotate(-135deg);}
  .share-summary:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}
  .share-body{padding:2px 0 14px;}
  #lookJson{width:100%;min-height:70px;resize:vertical;background:var(--bg);border:1px solid var(--line);border-radius:8px;color:var(--cyan);font-family:var(--mono);font-size:12.5px;line-height:1.5;padding:11px 12px;}
  #lookJson:focus{outline:none;border-color:var(--cyan);}
  .share-btns{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}
  .share-hint{font-family:var(--read);font-size:12px;color:var(--muted);margin-top:9px;line-height:1.5;}
  /* presets as a swipeable filter strip (like IG filters) — scales to many presets */
  #presetRow{flex-wrap:nowrap;overflow-x:auto;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;padding:2px 2px 12px;gap:9px;scrollbar-width:thin;scrollbar-color:var(--line) transparent;}
  #presetRow::-webkit-scrollbar{height:7px;}
  #presetRow::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px;}
  #presetRow::-webkit-scrollbar-thumb:hover{background:var(--muted);}
  #presetRow .chip{flex:0 0 auto !important;scroll-snap-align:start;white-space:nowrap;min-height:46px;}
  /* effect search box — find any of the 30+ knobs instantly */
  .knob-search{position:relative;margin-bottom:12px;}
  .knob-search input{width:100%;background:var(--panel-2);border:1px solid var(--line);color:var(--text);font-family:var(--read);font-size:14px;padding:13px 42px 13px 40px;border-radius:11px;min-height:48px;}
  .knob-search input:focus{outline:none;border-color:var(--cyan);}
  .knob-search input::placeholder{color:var(--muted);}
  .knob-search::before{content:'';position:absolute;left:15px;top:50%;width:15px;height:15px;transform:translateY(-50%);background:none;border:2px solid var(--muted);border-radius:50%;box-shadow:9px 9px 0 -6px var(--muted);pointer-events:none;}
  .knob-search.has::before{border-color:var(--cyan);box-shadow:9px 9px 0 -6px var(--cyan);}
  .ks-clear{position:absolute;right:8px;top:50%;transform:translateY(-50%);width:32px;height:32px;display:none;align-items:center;justify-content:center;color:var(--muted);cursor:pointer;font-size:22px;line-height:1;border-radius:7px;}
  .ks-clear:hover{color:var(--text);background:var(--panel);}
  .knob-search.has .ks-clear{display:flex;}
  .cat.hide,.ctl.hide{display:none;}
  .knob-noresult{display:none;padding:18px;text-align:center;color:var(--muted);font-family:var(--read);font-size:14px;line-height:1.6;}
  .knob-noresult.on{display:block;}
  /* effect-box timeline */
  .fx-tl{position:relative;background:var(--panel-2);border:1px solid var(--line);border-radius:8px;padding:8px 0 0;margin:6px 0 10px;overflow:hidden;}
  .fx-lanes{position:relative;padding:0 2px;}
  .fx-lane{position:relative;height:46px;margin:0 0 6px;background:rgba(255,255,255,.03);border-radius:6px;}
  .fx-box{position:absolute;top:3px;bottom:3px;border-radius:7px;cursor:grab;display:flex;align-items:center;justify-content:center;min-width:28px;touch-action:none;overflow:hidden;}
  .fx-box.sel{outline:2px solid #fff;outline-offset:1px;z-index:2;border-radius:7px;}
  .fx-box-fill{position:absolute;inset:0;border-radius:7px;z-index:0;box-shadow:0 1px 5px rgba(0,0,0,.4);}
  .fx-box-lbl{position:relative;z-index:3;display:flex;align-items:center;justify-content:center;color:#08080f;pointer-events:none;}
  .fx-box-edit{width:17px;height:17px;opacity:.82;filter:drop-shadow(0 1px 1px rgba(255,255,255,.28));}
  /* resize handles: wide touch zone + a clearly-visible white grip pill (reads on any box colour) */
  .fx-box-h{position:absolute;top:0;bottom:0;width:24px;cursor:ew-resize;display:flex;align-items:center;justify-content:center;z-index:5;touch-action:none;}
  .fx-box-h::after{content:'';width:5px;height:56%;min-height:16px;max-height:26px;border-radius:3px;background:rgba(255,255,255,.9);box-shadow:0 0 0 1.5px rgba(8,8,15,.45);}
  .fx-box.sel .fx-box-h::after{background:#fff;box-shadow:0 0 0 1.5px rgba(8,8,15,.6),0 0 6px rgba(255,255,255,.5);}
  .fx-box-hl{left:0;border-radius:7px 0 0 7px;} .fx-box-hr{right:0;border-radius:0 7px 7px 0;}
  .fx-box-h:active{background:rgba(255,255,255,.14);}
  .fx-playhead{position:absolute;top:8px;bottom:0;width:2px;background:var(--mag);pointer-events:none;z-index:3;left:0;}
  .fx-tools{display:flex;flex-wrap:wrap;gap:9px;align-items:center;margin-bottom:8px;}
  .fx-tools .tl-read{margin-left:auto;font-size:11px;color:var(--muted);}
  /* effect-box editor as a bottom-sheet dialog (opens when you tap/add a box) */
  .fx-sheet{position:fixed;inset:0;z-index:200;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;}
  .fx-sheet[hidden]{display:none;}
  /* NO blur / heavy dim: you're tuning an effect, so the live preview must stay
     crisp and visible behind the sheet. The backdrop is just a light tap-to-close layer. */
  .fx-sheet-backdrop{position:absolute;inset:0;background:rgba(5,6,12,.14);animation:fxFade .18s ease;}
  .fx-sheet-panel{position:relative;width:100%;max-width:760px;background:var(--panel);border:1px solid var(--line);border-bottom:none;border-radius:16px 16px 0 0;box-shadow:0 -18px 50px rgba(0,0,0,.5);max-height:82vh;display:flex;flex-direction:column;animation:fxSlide .22s cubic-bezier(.2,.8,.2,1);}
  @keyframes fxFade{from{opacity:0}to{opacity:1}}
  @keyframes fxSlide{from{transform:translateY(24px);opacity:.4}to{transform:translateY(0);opacity:1}}
  .fx-ed-head{display:flex;align-items:center;gap:12px;padding:10px 16px 12px;border-bottom:1px solid var(--line);position:relative;flex:0 0 auto;}
  .fx-ed-grip{position:absolute;top:7px;left:50%;transform:translateX(-50%);width:38px;height:4px;border-radius:2px;background:var(--line);}
  .fx-ed-title{font-family:var(--read);font-size:14px;color:var(--muted);margin-top:6px;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .fx-ed-title b{color:var(--cyan);font-family:var(--mono);}
  .fx-ed-done{margin-top:6px;background:var(--cyan);color:#05121a;border:none;border-radius:9px;font-family:var(--mono);font-weight:700;font-size:13px;padding:10px 22px;min-height:44px;cursor:pointer;touch-action:manipulation;}
  .fx-ed-done:hover{filter:brightness(1.08);}
  .fx-ed-cancel{margin-top:6px;background:transparent;color:var(--muted);border:1px solid var(--line-2);border-radius:9px;font-family:var(--mono);font-weight:700;font-size:13px;padding:10px 16px;min-height:44px;cursor:pointer;touch-action:manipulation;}
  .fx-ed-cancel:hover{color:var(--text);border-color:var(--muted);}
  .fx-sheet .presets .chip,.fx-sheet .fx-boxset button{touch-action:manipulation;}
  /* respect reduced-motion: no slide/fade for the editor sheet */
  @media (prefers-reduced-motion: reduce){
    .fx-sheet-backdrop,.fx-sheet-panel{animation:none;}
  }
  .fx-sheet-body{overflow-y:auto;-webkit-overflow-scrolling:touch;padding:14px 16px 20px;overscroll-behavior:contain;}
  .fx-sheet .presets{margin-bottom:12px;}
  .fx-boxset{display:flex;flex-wrap:wrap;align-items:center;gap:12px 16px;background:var(--panel);border:1px solid var(--cyan);border-radius:9px;padding:12px 14px;margin-bottom:10px;}
  .fx-boxname{font-family:var(--mono);font-weight:700;font-size:13px;color:var(--cyan);}
  .fx-fade{display:flex;align-items:center;gap:9px;font-size:12.5px;color:var(--muted);font-family:var(--read);}
  .fx-fade input{width:96px;}
  /* mobile timeline: taller curve + fatter scrub strip for easier touch
     (placed last so it wins the source-order cascade over the base rules) */
  @media (max-width:560px){
    #scrub-strip{ height:44px; }
    #scrub-strip::after{ font-size:10px; top:16px; }
    .tl-panel{ padding:16px 14px; }
    /* bigger touch targets on the effect-box timeline */
    .fx-lane{ height:56px; }
    .fx-box-h{ width:26px; }
    .fx-box-edit{ width:20px; height:20px; }
    .fx-fade input{ width:110px; }
    /* reclaim vertical space on phones so the timeline isn't pushed off-screen:
       cap the preview and tighten the source/playback controls */
    #gl{ max-height:42vh; }
    .sticky-top{ padding-bottom:6px; margin-bottom:4px; }
    .stage{ margin-bottom:8px; }
    /* compact the top controls into 2 tidy rows: [Sample|Load Video|Load Image]
       then [Pause | mute | volume] — instead of three tall full-width rows */
    .row{ gap:6px; margin-bottom:8px; }
    .row > button{ min-height:42px; font-size:13px; padding:0 8px; }
    #btnSample, #btnUploadVideo, #btnUploadImage{ flex:1 1 calc(33.333% - 4px); }
    #btnPlay{ flex:1 1 96px; }
    .vol-wrap{ flex:2 1 150px; display:flex; align-items:center; gap:8px; }
    .vol-wrap .vol-btn{ flex:0 0 auto; min-height:42px; }
    .vol-wrap #volSlider{ flex:1 1 auto; }
    /* keep the live preview visible above the editing sheet so you see the effect */
    .fx-sheet-panel{ max-height:66vh; }
  }