:root{
    --black:#0a0a0b;
    --panel-bg:#141416;
    --panel-bg-2:#1b1b1e;
    --line:#2a2a2e;
    --white:#f5f5f7;
    --muted:#8d8d94;
    --accent:#e7007f;
    --accent-dim:rgba(231,0,127,.35);
    --radius:14px;
    font-family:'Inter',sans-serif;
  }
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;background:var(--black);color:var(--white);height:100%;height:100dvh;overflow:hidden;overscroll-behavior:none;}
  .app{display:flex;flex-direction:column;height:100vh;height:100dvh;width:100vw;}

  /* Titel oben links im 3D-Bereich */
  .hud-title{margin:0 0 10px;font-family:'Inter',sans-serif;font-size:19px;font-weight:700;letter-spacing:-.3px;color:var(--accent);white-space:nowrap;}
  /* Main layout */
  .main{flex:1;display:grid;grid-template-columns:1fr 340px;min-height:0;}
  .left{display:flex;flex-direction:column;min-height:0;min-width:0;}
  .left .viewer{flex:1;min-height:0;}
  .viewer{position:relative;background:radial-gradient(ellipse at 50% 30%, #17171a 0%, #0a0a0b 70%);overflow:hidden;touch-action:none;}
  .viewer canvas{display:block;width:100%;height:100%;touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;}
  .hint{
    position:absolute;bottom:16px;left:50%;transform:translateX(-50%);
    font-family:'Inter',sans-serif;font-size:12px;font-weight:500;color:var(--muted);
    background:rgba(20,20,22,.6);backdrop-filter:blur(6px);padding:6px 14px;border-radius:999px;
    border:1px solid var(--line);pointer-events:none;
  }

  /* HUD */
  .hud{
    position:absolute;top:20px;left:20px;z-index:2;
    background:rgba(20,20,22,.8);backdrop-filter:blur(10px);
    border:1px solid var(--line);border-radius:var(--radius);
    padding:16px 18px;width:360px;   /* feste Breite, egal wie groß die Wand ist */
    box-shadow:0 0 0 1px rgba(231,0,127,.08), 0 12px 30px rgba(0,0,0,.4);
  }
  .hud .eyebrow{display:flex;align-items:center;gap:8px;width:100%;background:none;border:none;padding:0;cursor:pointer;text-align:left;font-family:'Inter',sans-serif;font-size:10.5px;font-weight:600;letter-spacing:1.4px;color:var(--accent);text-transform:uppercase;margin-bottom:10px;}
  .hud-summary{display:none;}
  .hud{cursor:pointer;}
  .hud-title{display:flex;align-items:center;gap:10px;}
  .hud-chevron{display:block;flex:none;width:20px;height:20px;margin-left:auto;color:var(--accent);transition:transform .2s;filter:drop-shadow(0 0 4px rgba(231,0,127,.55));}
  .hud.collapsed .eyebrow{margin-bottom:0;}
  .hud.collapsed .hud-summary{display:inline;color:var(--white);letter-spacing:0;text-transform:none;font-size:11px;}
  .hud.collapsed .hud-row{display:none;}
  .hud:not(.collapsed) .hud-chevron{transform:rotate(180deg);}
  .hud:not(.collapsed) .eyebrow{position:absolute;top:10px;right:12px;width:auto;margin:0;}
  .hud-row{display:flex;justify-content:space-between;gap:18px;font-family:'Inter',sans-serif;font-size:13px;font-variant-numeric:tabular-nums;padding:3px 0;}
  .hud-row span:first-child{color:var(--muted);}
  .hud-row span:last-child{color:var(--white);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;}

  /* Sidebar */
  .panel{
    background:var(--panel-bg);border-left:1px solid var(--line);
    overflow-y:auto;-webkit-overflow-scrolling:touch;padding:22px 20px 24px;position:relative;
  }
  .panel::-webkit-scrollbar{width:6px;}
  .panel::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px;}
  .field{margin-bottom:24px;}
  .title-row{display:flex;align-items:center;gap:6px;margin-bottom:10px;}
  .title-row .title-text{font-family:'Space Grotesk',sans-serif;font-size:12.5px;font-weight:600;color:var(--white);letter-spacing:.2px;}

  .info-wrap{position:relative;display:inline-flex;vertical-align:middle;}
  .info-btn{
    width:15px;height:15px;border-radius:50%;background:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.92);
    color:#0a0a0b;font-size:10px;line-height:13px;text-align:center;cursor:pointer;
    font-family:'JetBrains Mono',monospace;padding:0;flex-shrink:0;font-weight:600;
  }
  .info-btn:hover{border-color:var(--accent);background:var(--accent);color:#fff;}
  .tooltip-pop{
    display:none;position:absolute;top:22px;left:0;z-index:30;width:230px;
    background:#0d0d0e;border:1px solid var(--line);border-radius:9px;padding:10px 12px;
    font-family:'Inter',sans-serif;font-size:11.5px;line-height:1.5;color:#c9c9cd;font-weight:400;
    box-shadow:0 10px 24px rgba(0,0,0,.5);
  }
  .info-wrap:hover .tooltip-pop, .info-wrap.open .tooltip-pop{display:block;}
  .switch-row .txt .info-wrap{margin-left:6px;}
  /* Tooltip über die volle Breite der Zeile, damit er nie rechts aus dem Bereich ragt */
  .title-row, .switch-row{position:relative;}
  .title-row .info-wrap, .switch-row .info-wrap{position:static;}
  .title-row .tooltip-pop{top:22px;left:0 !important;right:0;width:auto;}
  .switch-row .tooltip-pop{top:calc(100% + 6px);left:0 !important;right:0;width:auto;}
  .info-wrap.up .tooltip-pop{top:auto;bottom:calc(100% + 6px);}

  .ico-box{display:flex;align-items:center;justify-content:center;height:26px;margin-bottom:6px;color:inherit;}
  .ico-box svg{display:block;stroke:currentColor;}

  .segmented{display:flex;gap:6px;flex-wrap:wrap;}
  .seg-btn{
    flex:1;min-width:80px;background:var(--panel-bg-2);border:1px solid var(--line);color:var(--muted);
    border-radius:10px;padding:10px 8px;font-size:12px;font-family:'Inter',sans-serif;font-weight:500;
    cursor:pointer;text-align:center;transition:.2s;line-height:1.35;
  }
  .seg-large .seg-btn{font-size:15px;font-weight:600;padding:14px 8px;}
  .seg-btn .ico{display:block;font-size:16px;margin-bottom:4px;}
  .seg-btn:hover{border-color:#3a3a40;color:var(--white);}
  .seg-btn.active{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 0 14px var(--accent-dim);}

  .stepper-row{display:flex;align-items:center;gap:10px;}
  .stepper{flex:none;display:flex;align-items:center;background:var(--panel-bg-2);border:1px solid var(--line);border-radius:10px;overflow:hidden;}
  .stepper button{background:none;border:none;color:var(--white);width:32px;height:36px;font-size:16px;cursor:pointer;}
  .stepper button:hover{background:var(--line);}
  .stepper .val{width:62px;text-align:center;font-family:'Inter',sans-serif;font-size:13.5px;font-weight:500;font-variant-numeric:tabular-nums;background:transparent;border:none;color:var(--white);padding:0;height:36px;}
  .stepper .val{width:40px;text-align:right;padding-right:1px;}
  .stepper .unit{width:20px;font-family:'Inter',sans-serif;font-size:13.5px;font-weight:500;color:var(--white);}
  .stepper .val:focus{outline:1px solid var(--accent);outline-offset:-1px;}
  .stepper-label{font-size:11.5px;color:var(--muted);font-family:'Inter',sans-serif;}
  .stepper-row > .stepper-label:first-child{flex:none;}
  .stepper-row > .stepper + .stepper-label{flex:1;min-width:0;line-height:1.3;white-space:nowrap;letter-spacing:-0.2px;}
  .panel-total{margin-top:12px;padding-top:10px;border-top:1px solid var(--line);font-size:11.5px;line-height:1.5;color:var(--muted);font-family:'Inter',sans-serif;font-variant-numeric:tabular-nums;}
  /* 16:9-Haken rechts in der Titelzeile von „Größe der Wand“ */
  .ratio-wrap{margin-left:auto;display:inline-flex;align-items:center;gap:8px;padding-left:10px;}
  .ratio-toggle{position:relative;display:inline-flex;align-items:center;gap:7px;cursor:pointer;font-size:12px;font-weight:500;color:var(--muted);font-family:'Inter',sans-serif;user-select:none;white-space:nowrap;}
  .ratio-toggle input{position:absolute;opacity:0;width:1px;height:1px;margin:0;}
  .ratio-toggle .sw{position:relative;width:26px;height:15px;border-radius:999px;background:rgba(255,255,255,.14);transition:background .2s;flex-shrink:0;}
  .ratio-toggle .sw::after{content:'';position:absolute;top:2px;left:2px;width:11px;height:11px;border-radius:50%;background:#fff;transition:transform .2s;}
  .ratio-toggle input:checked ~ .sw{background:var(--accent);}
  .ratio-toggle input:checked ~ .sw::after{transform:translateX(11px);}
  .ratio-toggle input:checked ~ .lbl{color:var(--white);}
  .ratio-wrap .info-wrap{flex-shrink:0;}
  .ratio-toggle input:focus-visible ~ .sw{outline:2px solid var(--accent);outline-offset:2px;}
  .panel-total .ratio-note{color:var(--accent);}
  .panel-total b{color:var(--white);font-weight:600;}
  .size-note{margin-top:8px;font-size:11.5px;line-height:1.5;color:var(--muted);}

  select{
    width:100%;background:var(--panel-bg-2);border:1px solid var(--line);color:var(--white);
    padding:10px 38px 10px 12px;border-radius:10px;font-family:'JetBrains Mono',monospace;font-size:12.5px;
    appearance:none;-webkit-appearance:none;cursor:pointer;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%23e7007f' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat:no-repeat;background-position:right 14px center;
  }
  select:hover,select:focus{border-color:var(--accent);outline:none;}

  .switch-row{display:flex;align-items:center;justify-content:space-between;background:var(--panel-bg-2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;}
  .switch-row .txt{font-size:12.5px;}
  .switch-row .txt small{display:block;color:var(--muted);font-size:11px;margin-top:2px;font-family:'Inter',sans-serif;}
  .switch{position:relative;width:40px;height:22px;flex-shrink:0;}
  .switch input{opacity:0;width:0;height:0;}
  .slider-toggle{position:absolute;cursor:pointer;inset:0;background:#3a3a40;border-radius:999px;transition:.2s;}
  .slider-toggle::before{content:"";position:absolute;width:16px;height:16px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s;}
  input:checked + .slider-toggle{background:var(--accent);}
  input:checked + .slider-toggle::before{transform:translateX(18px);}

  input[type=range]{width:100%;accent-color:var(--accent);}
  .range-labels{display:flex;justify-content:space-between;font-family:'JetBrains Mono',monospace;font-size:10.5px;color:var(--muted);margin-top:4px;}

  .cta-wrap{position:sticky;bottom:0;padding-top:20px;padding-bottom:max(4px, env(safe-area-inset-bottom));margin-top:6px;border-top:1px solid var(--line);background:var(--panel-bg);}
  .cta{
    width:100%;background:linear-gradient(135deg, var(--accent), #b8005f);color:#fff;border:none;
    padding:16px;border-radius:12px;font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:14px;
    cursor:pointer;box-shadow:0 8px 24px var(--accent-dim);letter-spacing:.2px;text-align:center;
  }
  .cta:hover{filter:brightness(1.08);}
  .view-actions{position:absolute;right:14px;bottom:14px;display:flex;gap:6px;}
  .view-btn{display:inline-flex;align-items:center;gap:6px;background:rgba(20,20,22,.7);backdrop-filter:blur(6px);border:1px solid var(--line);color:var(--white);border-radius:999px;padding:7px 12px;font-family:'Inter',sans-serif;font-size:11.5px;font-weight:500;cursor:pointer;}
  .view-btn:hover{border-color:var(--accent);}
  .upload-btn{display:block;margin-top:8px;background:var(--panel-bg-2);border:1px dashed #3a3a40;color:var(--white);border-radius:10px;padding:11px 10px;text-align:center;font-size:12px;cursor:pointer;}
  .upload-btn:hover{border-color:var(--accent);}
  .upload-btn.active{border-style:solid;border-color:var(--accent);background:rgba(231,0,127,.12);}
  /* Figur: eine Kopfzeile (i + Titel + Wert), direkt darunter der Regler */
  .dist-head{position:relative;display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:4px;}
  .dist-title{display:flex;align-items:center;gap:6px;font-size:12.5px;}
  .dist-head .info-wrap{position:static;}
  .dist-head .tooltip-pop{top:calc(100% + 6px);left:0 !important;right:0;width:auto;}
  .dist-head #distVal{font-size:12.5px;font-weight:500;}
  #distField .pitch-reco{margin-top:6px;}
  .pitch-reco{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:10px;background:var(--panel-bg-2);border:1px solid var(--line);border-radius:10px;padding:9px 12px;font-size:12px;}
  .pitch-reco button{background:var(--accent);border:none;color:#fff;border-radius:8px;padding:6px 10px;font-size:11.5px;font-weight:600;cursor:pointer;flex-shrink:0;}
  .pitch-reco.match button{display:none;}
  .toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#0d0d0e;border:1px solid var(--accent);color:#fff;padding:10px 16px;border-radius:999px;font-size:12.5px;z-index:60;opacity:0;transition:opacity .2s;pointer-events:none;}
  .toast.show{opacity:1;}

  /* Modal */
  .modal-overlay{
    position:fixed;inset:0;background:rgba(6,6,7,.7);backdrop-filter:blur(6px);
    display:none;align-items:center;justify-content:center;z-index:50;padding:20px;
  }
  .modal-overlay.open{display:flex;}
  .modal{
    background:var(--panel-bg);border:1px solid var(--line);border-radius:16px;max-width:480px;width:100%;
    padding:28px;max-height:90vh;overflow-y:auto;
  }
  .modal{position:relative;}
  .modal-close{position:absolute;top:12px;right:12px;width:34px;height:34px;border-radius:50%;background:var(--panel-bg-2);border:1px solid var(--line);color:var(--white);font-size:20px;line-height:30px;cursor:pointer;padding:0;}
  .modal-close:hover{border-color:var(--accent);}
  .modal h2{font-family:'Space Grotesk',sans-serif;font-size:19px;margin:0 0 4px;}
  .modal p.sub{color:var(--muted);font-size:12.5px;margin:0 0 20px;}
  .modal label{display:block;font-size:11.5px;color:var(--muted);margin-bottom:6px;font-family:'JetBrains Mono',monospace;}
  .modal input[type=text], .modal input[type=email], .modal input[type=tel], .modal textarea{
    width:100%;background:var(--panel-bg-2);border:1px solid var(--line);color:var(--white);
    padding:11px 12px;border-radius:9px;font-family:'Inter',sans-serif;font-size:13px;margin-bottom:14px;
  }
  .modal textarea{resize:vertical;min-height:70px;}
  .config-preview{
    background:#0d0d0e;border:1px solid var(--line);border-radius:9px;padding:12px 14px;
    font-family:'JetBrains Mono',monospace;font-size:11px;color:#c9c9cd;white-space:pre-wrap;
    max-height:140px;overflow-y:auto;margin-bottom:16px;line-height:1.6;
  }
  .modal-actions{display:flex;gap:10px;}
  .btn-secondary{
    flex:1;background:var(--panel-bg-2);border:1px solid var(--line);color:var(--white);
    padding:13px;border-radius:10px;font-family:'Inter',sans-serif;font-weight:500;font-size:13px;cursor:pointer;
  }
  .btn-primary{
    flex:2;background:var(--accent);border:none;color:#fff;padding:13px;border-radius:10px;
    font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:13px;cursor:pointer;
  }
  .hp-field{position:absolute;left:-9999px;width:1px;height:1px;opacity:0;}
  .modal label.consent-row{display:flex;gap:10px;align-items:flex-start;font-family:'Inter',sans-serif;font-size:11.5px;line-height:1.5;color:#c9c9cd;margin-bottom:14px;cursor:pointer;}
  .consent-row input{margin:2px 0 0;accent-color:var(--accent);width:16px;height:16px;flex-shrink:0;}
  .consent-row a{color:var(--white);}
  .modal input.invalid, .modal label.consent-row.invalid{outline:1px solid var(--accent);outline-offset:2px;}
  .form-error{display:none;background:rgba(231,0,127,.12);border:1px solid var(--accent-dim);color:#ffd1e8;border-radius:9px;padding:10px 12px;font-size:12px;line-height:1.5;margin-bottom:14px;}
  .form-error.show{display:block;}
  .form-error a{color:#fff;}
  .btn-primary:disabled{opacity:.6;cursor:wait;}
  .success-box{display:none;text-align:center;padding:10px 0;}
  .success-box.show{display:block;}
  .success-box .check{
    width:52px;height:52px;border-radius:50%;background:var(--accent);margin:0 auto 16px;
    display:flex;align-items:center;justify-content:center;font-size:24px;
  }

  @media (max-width: 860px){
    .main{grid-template-columns:1fr;grid-template-rows:52vh 1fr;grid-template-rows:52dvh 1fr;}
    .panel{border-left:none;border-top:1px solid var(--line);padding:18px 16px 16px;}
    .hud{top:8px;left:8px;width:290px;padding:7px 10px;border-radius:9px;}
    .hud-title{font-size:12px;margin-bottom:3px;letter-spacing:-.2px;}
    .hud .eyebrow{font-size:8.5px;margin-bottom:5px;}
    .hud-row{font-size:10.5px;padding:1px 0;gap:10px;}
    .hud .eyebrow{display:flex;cursor:pointer;}
    .hud{cursor:pointer;}
    .hud-title{display:flex;align-items:center;gap:10px;}
    .hud-chevron{display:block;flex:none;width:18px;height:18px;margin-left:auto;color:var(--accent);transition:transform .2s;filter:drop-shadow(0 0 4px rgba(231,0,127,.55));}
    .hud.collapsed{padding:6px 9px;}
    .hud.collapsed .eyebrow{margin-bottom:0;}
    .hud.collapsed .hud-summary{display:inline;color:var(--white);letter-spacing:0;text-transform:none;font-size:10px;}
    .hud.collapsed .hud-row{display:none;}
    .hud:not(.collapsed) .hud-chevron{transform:rotate(180deg);}
    .hud:not(.collapsed) .eyebrow{position:absolute;top:7px;right:9px;width:auto;margin:0;}
    .hint{display:none;}
    /* Link teilen / PDF am Handy kleiner */
    .view-actions{right:8px;bottom:8px;gap:4px;}
    .view-btn{padding:4px 9px;gap:4px;font-size:10.5px;}
    .view-btn svg{width:12px;height:12px;}

    /* Größere Touch-Ziele */
    .seg-btn{padding:12px 8px;font-size:12.5px;min-height:44px;}
    .stepper button{width:40px;height:42px;font-size:18px;}
    .stepper .val{font-size:13.5px;}
    .switch{width:44px;height:26px;}
    .slider-toggle::before{width:20px;height:20px;}
    input:checked + .slider-toggle::before{transform:translateX(18px);}
    .info-btn{width:19px;height:19px;font-size:12px;line-height:17px;}
    .cta{padding:15px;font-size:14.5px;}

    .modal{padding:20px;border-radius:14px;max-height:85dvh;}
    .modal h2{font-size:17px;}
  }

  @media (max-width: 480px){
    .main{grid-template-rows:52vh 1fr;grid-template-rows:52dvh 1fr;}
    .field{margin-bottom:18px;}
    .seg-btn{min-width:70px;}
  }

  @media (hover:none){
    .seg-btn:hover{border-color:var(--line);color:var(--muted);}
    .seg-btn.active:hover{color:#fff;}
    .info-wrap:hover:not(.open) .tooltip-pop{display:none;}
  }
  .mount-hint{margin:10px 0 0;font-size:11.5px;line-height:1.5;color:var(--muted);font-family:'Inter',sans-serif;}
  .mount-hint a{color:var(--accent);font-weight:600;text-decoration:none;white-space:nowrap;}
  .mount-hint a:hover{text-decoration:underline;}
  .mount-hint .hint-i{display:inline-flex;align-items:center;justify-content:center;width:13px;height:13px;margin-right:6px;border:1px solid currentColor;border-radius:50%;font-size:9px;font-weight:600;line-height:1;vertical-align:1px;font-family:inherit;color:inherit;}
  /* Vollbild-Button groß unten links, pulsiert bis zum ersten Klick */
  .fs-btn{position:absolute;left:14px;bottom:14px;z-index:3;display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;border:0;border-radius:999px;padding:11px 18px;font-family:'Inter',sans-serif;font-size:14px;font-weight:600;cursor:pointer;box-shadow:0 6px 18px rgba(231,0,127,.45);transition:background .2s,transform .2s;}
  .fs-btn:hover{background:#ff1a94;transform:translateY(-1px);}
  .fs-btn.active{background:rgba(20,20,22,.8);border:1px solid var(--accent);box-shadow:none;}
  .fs-btn.pulse{animation:fsPulse 1.6s ease-in-out infinite;}
  @keyframes fsPulse{
    0%{box-shadow:0 0 0 0 rgba(231,0,127,.75),0 6px 18px rgba(231,0,127,.45);transform:scale(1);}
    50%{transform:scale(1.06);}
    70%{box-shadow:0 0 0 16px rgba(231,0,127,0),0 6px 18px rgba(231,0,127,.45);}
    100%{box-shadow:0 0 0 0 rgba(231,0,127,0),0 6px 18px rgba(231,0,127,.45);transform:scale(1);}
  }
  @media (prefers-reduced-motion:reduce){.fs-btn.pulse{animation:none;}}
  @media (max-width:860px){.fs-btn{left:8px;bottom:8px;padding:8px 13px;font-size:12.5px;gap:6px;}.fs-btn svg{width:15px;height:15px;}}
  .view-btn.active{border-color:var(--accent);color:#fff;background:rgba(231,0,127,.85);}
  .seg-4 .seg-btn{min-width:0;flex:1 1 0;padding-left:4px;padding-right:4px;}