:root{
    --bg:#080a0f;
    --bg2:#0e1219;
    --panel:rgba(18,23,33,.86);
    --panel-solid:#121721;
    --line:rgba(255,255,255,.08);
    --line2:rgba(255,255,255,.14);
    --txt:#e7ecf5;
    --dim:#8b97ab;
    --acc:#5ee7ff;
    --acc2:#b98cff;
    --ok:#63f2a8;
    --r:12px;
    --shadow:0 18px 50px rgba(0,0,0,.55);
  }
  *{box-sizing:border-box}
  /* [hidden] должно побеждать классы с display: у .btn, .gal-empty и т.п. */
  [hidden]{display:none !important}
  html,body{height:100%}
  body{
    margin:0;
    background:
      radial-gradient(1200px 700px at 78% -10%, #1a2440 0%, transparent 60%),
      radial-gradient(900px 600px at -10% 110%, #2a1338 0%, transparent 55%),
      var(--bg);
    color:var(--txt);
    font:14px/1.45 ui-sans-serif,-apple-system,"Segoe UI",Roboto,Inter,Arial,sans-serif;
    -webkit-font-smoothing:antialiased;
    overflow:hidden;
  }
  button,select,input{font:inherit;color:inherit}

  .app{display:grid;grid-template-columns:1fr 340px;height:100vh;height:100dvh}

  /* ---------- stage ---------- */
  .stage{
    position:relative;display:flex;flex-direction:column;min-width:0;
    padding:14px 14px 12px;
  }
  .topbar{
    display:flex;align-items:center;gap:12px;flex-wrap:wrap;
    padding:0 4px 12px;
  }
  .brand{display:flex;align-items:center;gap:10px;margin-right:auto;min-width:0}
  .logomark{
    width:30px;height:30px;flex:0 0 30px;border-radius:9px;
    background:conic-gradient(from 0deg,#5ee7ff,#b98cff,#ff7ac0,#ffd166,#63f2a8,#5ee7ff);
    box-shadow:0 0 22px rgba(94,231,255,.35);
    animation:spin 14s linear infinite;
  }
  @keyframes spin{to{transform:rotate(360deg)}}
  .brand h1{font-size:15px;margin:0;font-weight:650;letter-spacing:.2px;white-space:nowrap}
  .brand small{display:block;color:var(--dim);font-size:11px;font-weight:400}

  .seg{display:flex;gap:2px;background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:10px;padding:2px}
  .seg button{
    border:0;background:transparent;color:var(--dim);padding:6px 10px;border-radius:8px;
    cursor:pointer;font-size:12px;white-space:nowrap;transition:.15s
  }
  .seg button.on{background:linear-gradient(180deg,rgba(94,231,255,.22),rgba(185,140,255,.18));color:#fff;box-shadow:inset 0 0 0 1px rgba(94,231,255,.35)}
  .seg button:hover{color:#fff}

  .canvas-wrap{
    flex:1;min-height:0;display:grid;place-items:center;position:relative;
  }
  #holder{
    position:relative;
    aspect-ratio:1/1;
    width:min(100%, calc(100vh - 300px));
    max-height:100%;
    border-radius:18px;
    overflow:hidden;
    box-shadow:var(--shadow), 0 0 0 1px var(--line2);
    background:#05070b;
  }
  #view{display:block;width:100%;height:100%;cursor:grab;touch-action:none}
  #view.drag{cursor:grabbing}
  .hud{
    position:absolute;left:10px;bottom:10px;display:flex;gap:8px;align-items:center;
    background:rgba(6,9,14,.62);backdrop-filter:blur(10px);border:1px solid var(--line);
    padding:6px 10px;border-radius:10px;font-size:11px;color:var(--dim);pointer-events:none;
    opacity:0;transition:.3s
  }
  #holder:hover .hud{opacity:1}
  .hud b{color:var(--txt);font-weight:600}

  .bottombar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:12px 4px 0}  .btn{
    border:1px solid var(--line2);background:rgba(255,255,255,.045);
    padding:9px 14px;border-radius:10px;cursor:pointer;transition:.15s;white-space:nowrap;
    display:inline-flex;align-items:center;gap:7px;font-size:13px
  }
  .btn:hover{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.24)}
  .btn:active{transform:translateY(1px)}
  .btn:disabled{opacity:.45;cursor:not-allowed;filter:grayscale(.35)}
  .btn:disabled:hover{background:rgba(255,255,255,.045);border-color:var(--line2)}
  .btn.primary:disabled{filter:grayscale(.6) brightness(.8)}
  .btn.primary{
    background:linear-gradient(180deg,#5ee7ff,#3aa8e8);color:#04121a;border-color:transparent;font-weight:650
  }
  .btn.primary:hover{filter:brightness(1.08)}
  .btn.ghost{background:transparent}
  .spacer{flex:1}
  .seedbox{
    display:flex;align-items:stretch;overflow:hidden;
    border:1px solid var(--line2);border-radius:11px;background:rgba(255,255,255,.03)
  }
  .seedbox .btn{padding:8px 13px;font-weight:650}
  .seedbox input{
    background:transparent;border:0;outline:0;width:118px;
    padding:8px 12px;font-size:13px;font-variant-numeric:tabular-nums;
    border-left:1px solid var(--line);color:var(--txt)
  }
  .seedbox input:focus{background:rgba(94,231,255,.07)}

  /* ---------- panel ---------- */
  .side{
    background:var(--panel);backdrop-filter:blur(18px);
    border-left:1px solid var(--line);
    overflow-y:auto;overscroll-behavior:contain;
    padding:14px 14px 40px;
    scrollbar-width:thin;scrollbar-color:#2a3242 transparent;
  }
  .side::-webkit-scrollbar{width:9px}
  .side::-webkit-scrollbar-thumb{background:#242c3b;border-radius:9px;border:2px solid transparent;background-clip:content-box}

  .group{border:1px solid var(--line);border-radius:var(--r);background:rgba(255,255,255,.022);margin-bottom:10px;overflow:hidden}
  .group > summary{
    list-style:none;cursor:pointer;padding:11px 12px;display:flex;align-items:center;gap:8px;
    font-weight:600;font-size:12.5px;letter-spacing:.03em;text-transform:uppercase;color:#c8d3e6
  }
  .group > summary::-webkit-details-marker{display:none}
  .group > summary::before{
    content:"";width:6px;height:6px;border-radius:2px;background:var(--acc);
    box-shadow:0 0 10px var(--acc);flex:0 0 6px;transition:.2s
  }
  .group[open] > summary::before{background:var(--acc2);box-shadow:0 0 10px var(--acc2)}
  .group > summary::after{content:"▾";margin-left:auto;color:var(--dim);font-size:11px;transition:.2s}
  .group[open] > summary::after{transform:rotate(180deg)}
  .group .body{padding:2px 12px 12px}

  .row{margin:10px 0}
  .row .lab{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:5px;gap:8px}
  .row .lab span{font-size:12px;color:#b8c3d6}
  .row .lab b{font-size:11.5px;color:var(--acc);font-variant-numeric:tabular-nums;font-weight:600}

  input[type=range]{
    -webkit-appearance:none;appearance:none;width:100%;height:22px;background:transparent;cursor:pointer;margin:0;display:block
  }
  input[type=range]::-webkit-slider-runnable-track{
    height:4px;border-radius:4px;background:linear-gradient(90deg,rgba(94,231,255,.75),rgba(185,140,255,.7))
  }
  input[type=range]::-webkit-slider-thumb{
    -webkit-appearance:none;width:15px;height:15px;border-radius:50%;background:#0b0f16;
    border:2px solid var(--acc);margin-top:-5.5px;box-shadow:0 0 10px rgba(94,231,255,.6)
  }
  input[type=range]::-moz-range-track{height:4px;border-radius:4px;background:rgba(255,255,255,.16)}
  input[type=range]::-moz-range-thumb{width:13px;height:13px;border-radius:50%;background:#0b0f16;border:2px solid var(--acc)}

  select, .textin{
    width:100%;background:#0d121b;border:1px solid var(--line2);border-radius:9px;
    padding:8px 10px;outline:0;cursor:pointer
  }
  select:focus,.textin:focus{border-color:var(--acc)}
  select option{background:#0d121b}

  .chips{display:flex;flex-wrap:wrap;gap:6px}
  .chip{
    border:1px solid var(--line2);background:rgba(255,255,255,.04);border-radius:999px;
    padding:6px 11px;font-size:12px;cursor:pointer;transition:.15s;color:#c3cee0
  }
  .chip:hover{border-color:var(--acc);color:#fff}
  .chip.on{background:linear-gradient(180deg,rgba(94,231,255,.24),rgba(185,140,255,.2));border-color:rgba(94,231,255,.55);color:#fff}

  .check{display:flex;align-items:center;gap:9px;cursor:pointer;padding:7px 0;user-select:none}
  .check input{appearance:none;-webkit-appearance:none;width:36px;height:20px;border-radius:999px;background:#222b3a;position:relative;cursor:pointer;transition:.2s;flex:0 0 36px;border:1px solid var(--line2)}
  .check input::after{content:"";position:absolute;top:2px;left:2px;width:14px;height:14px;border-radius:50%;background:#7c8798;transition:.2s}
  .check input:checked{background:linear-gradient(90deg,rgba(94,231,255,.5),rgba(185,140,255,.5))}
  .check input:checked::after{left:18px;background:#fff}
  .check span{font-size:12.5px;color:#b8c3d6}

  .hint{color:var(--dim);font-size:11.5px;line-height:1.5;margin:8px 0 0}
  kbd{
    background:rgba(255,255,255,.08);border:1px solid var(--line2);border-bottom-width:2px;
    border-radius:5px;padding:1px 5px;font-size:10.5px;font-family:inherit;color:#dbe4f2
  }
  .side.collapsed{display:none}
  .app.wide{grid-template-columns:1fr}

  .toast{
    position:fixed;left:50%;bottom:26px;transform:translate(-50%,20px);opacity:0;pointer-events:none;
    background:rgba(10,14,20,.94);border:1px solid var(--line2);padding:10px 16px;border-radius:11px;
    box-shadow:var(--shadow);transition:.25s;z-index:50;font-size:13px
  }
  .toast.on{opacity:1;transform:translate(-50%,0)}

  /* ---------------- транспорт анимации и запись ---------------- */
  .transport{
    display:flex;align-items:center;gap:10px;flex-wrap:wrap;
    padding:10px 12px;margin:12px 0 0;
    background:rgba(255,255,255,.028);border:1px solid var(--line);border-radius:14px;
  }
  .tbtn{
    flex:0 0 auto;width:38px;height:38px;border-radius:11px;cursor:pointer;
    border:1px solid var(--line2);background:rgba(255,255,255,.05);
    display:grid;place-items:center;font-size:15px;line-height:1;transition:.15s
  }
  .tbtn:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.25)}
  .tbtn.paused{color:var(--acc);border-color:rgba(94,231,255,.5)}
  .tsl{display:flex;align-items:center;gap:7px;font-size:11.5px;color:var(--dim);white-space:nowrap}
  .tsl > span{flex:0 0 auto}
  .tsl input[type=range]{width:96px}
  .tsl b{color:var(--acc);font-variant-numeric:tabular-nums;min-width:30px;font-size:11.5px}
  .tsl.mini select{padding:6px 8px;font-size:12px;border-radius:9px}
  .tsep{width:1px;height:22px;background:var(--line2)}
  .check.mini{padding:0}
  .check.mini input{width:30px;height:17px;flex-basis:30px}
  .check.mini input::after{width:11px;height:11px}
  .check.mini input:checked::after{left:15px}
  .check.mini span{font-size:11.5px;white-space:nowrap}

  .recing{
    position:absolute;left:50%;bottom:16px;transform:translateX(-50%);
    min-width:240px;padding:10px 14px;border-radius:12px;
    background:rgba(6,9,14,.82);backdrop-filter:blur(12px);border:1px solid var(--line2);
    box-shadow:var(--shadow)
  }
  .recing-txt{display:flex;justify-content:space-between;gap:14px;font-size:12px;margin-bottom:7px}
  .recing-txt b{color:#ff8a8a;font-weight:600}
  .recing-txt span{color:var(--dim);font-variant-numeric:tabular-nums}
  .recing-bar{height:4px;border-radius:4px;background:rgba(255,255,255,.12);overflow:hidden}
  .recing-bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,#ff8a8a,#ffd166);transition:width .1s linear}

  /* ---------------- галерея ---------------- */
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(420px,100vw);z-index:60;
    background:var(--panel-solid);border-left:1px solid var(--line2);
    box-shadow:-24px 0 60px rgba(0,0,0,.5);
    display:flex;flex-direction:column;padding:14px 14px 24px;
    animation:drawerIn .18s ease-out
  }
  @keyframes drawerIn{from{transform:translateX(20px);opacity:0}to{transform:none;opacity:1}}
  .drawer[hidden]{display:none}
  .drawer-head{display:flex;align-items:center;gap:10px;padding-bottom:12px;border-bottom:1px solid var(--line)}
  .drawer-head b{font-size:14px}
  .drawer-head .tbtn{margin-left:auto;width:32px;height:32px;font-size:12px}
  .gal-who{font-size:11.5px;color:var(--dim);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .drawer-actions{display:flex;gap:8px;align-items:center;padding:12px 0 4px;flex-wrap:wrap}
  .gal-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;overflow-y:auto;padding:4px 0;flex:1;align-content:start}
  .gal-card{position:relative;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#05070b;cursor:pointer;transition:.15s}
  .gal-card:hover{border-color:var(--acc);transform:translateY(-1px)}
  .gal-card img{display:block;width:100%;aspect-ratio:1/1;object-fit:cover;background:#05070b}
  .gal-card .cap{padding:6px 8px;font-size:10.5px;color:var(--dim);display:flex;justify-content:space-between;gap:6px}
  .gal-card .cap b{color:#cfd8e6;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .gal-card .del{
    position:absolute;top:6px;right:6px;width:24px;height:24px;border-radius:8px;cursor:pointer;
    border:1px solid var(--line2);background:rgba(6,9,14,.75);color:#ff9c9c;font-size:12px;
    display:grid;place-items:center;opacity:0;transition:.15s
  }
  .gal-card:hover .del{opacity:1}
  .gal-empty{color:var(--dim);font-size:12.5px;text-align:center;padding:26px 0}
  .gal-empty[hidden]{display:none}

  /* ---------------- схема трубы ---------------- */
  .drawer.tube{width:min(560px,100vw)}
  .tube-fan{width:min(320px,74vw);aspect-ratio:1/1;margin:10px auto 4px}
  .tube-fan svg{display:block;overflow:visible}
  .tube-side{width:100%;margin:4px 0 10px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.02)}
  .tube-side svg{display:block}
  .tube-info{
    border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.025);
    padding:12px 13px;font-size:12.5px;line-height:1.55;color:#c2cddd
  }
  .tube-info h4{margin:0 0 6px;font-size:13px;color:var(--txt);font-weight:650}
  .tube-info p{margin:0}
  .tube-info b{color:var(--acc);font-weight:600}
  .tube-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
  #tube svg .part{transition:.15s}
  #tube svg .part:hover{filter:drop-shadow(0 0 6px rgba(94,231,255,.85))}
  #tube svg .sector:hover{filter:brightness(1.35)}
  #tube svg .sector.hl{filter:brightness(1.4) drop-shadow(0 0 6px rgba(94,231,255,.6))}

  @media (max-width:900px){
    body{overflow:auto}
    .app{grid-template-columns:1fr;height:auto}
    .stage{padding-bottom:0}
    #holder{width:min(100%, 86vw)}
    .side{border-left:0;border-top:1px solid var(--line);max-height:none}
  }