/* ================================================================ */
    /* SUB HEADER */
    /* ================================================================ */
    #subHeaderBar {
      min-height: 64px;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(0,0,0,0.06);
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 8px 12px;
      flex-wrap: wrap;
      box-shadow: 0 2px 16px rgba(0,0,0,0.04);
      position: relative;
      z-index: 50;
      flex-shrink: 0;
    }
    .shb-group { display: flex; align-items: center; gap: 6px; background: rgba(0,0,0,0.03); border: 1px solid rgba(0,0,0,0.05); border-radius: 10px; padding: 4px 10px; }
    .shb-group .shb-label { font-size: 11px; font-weight: 700; color: #666; display: flex; align-items: center; gap: 4px; white-space: nowrap; }
    .shb-group .shb-label i { color: #888; }
    .shb-divider { width: 1px; height: 26px; background: rgba(0,0,0,0.08); margin: 0 2px; }
    .shb-fov-slider { width: 80px; -webkit-appearance: none; appearance: none; height: 12px; background: transparent; cursor: pointer; }
    .shb-fov-slider::-webkit-slider-runnable-track { height: 3px; background: #ddd; border-radius: 10px; }
    .shb-fov-slider::-webkit-slider-thumb { -webkit-appearance: none; width: 13px; height: 13px; border-radius: 50%; background: #555; cursor: pointer; margin-top: -5px; border: none; }
    .shb-icon-btn { width: 30px; height: 30px; border-radius: 6px; border: 1px solid rgba(0,0,0,0.06); background: #fff; color: #555; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 12px; transition: all 0.15s; flex-shrink: 0; }
    .shb-icon-btn:hover { background: rgba(0,0,0,0.06); color: #222; }
    .shb-reset-all-btn{
      height:34px;
      padding:0 12px;
      border-radius:8px;
      border:1px solid rgba(210,55,55,.18);
      background:rgba(210,55,55,.07);
      color:#a94444;
      font-family:inherit;
      font-size:11px;
      font-weight:800;
      cursor:pointer;
      display:flex;
      align-items:center;
      gap:6px;
      white-space:nowrap;
      transition:background .16s ease,border-color .16s ease,transform .16s ease;
    }
    .shb-reset-all-btn:hover{
      background:rgba(210,55,55,.13);
      border-color:rgba(210,55,55,.30);
      transform:translateY(-1px);
    }
    body.night-mode .shb-reset-all-btn{
      color:#f0a2a2;
      background:rgba(210,55,55,.10);
      border-color:rgba(255,120,120,.16);
    }

    .welcome-royal-card{position:fixed;top:118px;left:50%;z-index:9200;width:min(470px,calc(100vw - 34px));padding:20px 24px 18px;border-radius:18px;pointer-events:none;direction:rtl;text-align:right;color:#f5f0e5;background:linear-gradient(145deg,rgba(17,24,45,.97),rgba(29,34,61,.96));border:1px solid rgba(201,169,86,.62);box-shadow:0 18px 46px rgba(8,12,25,.22);opacity:0;transform:translate(-50%,-10px) scale(.985);transition:opacity 1.2s ease,transform 1.2s cubic-bezier(.22,.8,.2,1)}
    .welcome-royal-card::before{content:"";position:absolute;top:0;right:28px;left:28px;height:2px;border-radius:0 0 3px 3px;background:linear-gradient(90deg,transparent,#c9a956,transparent)}
    .welcome-royal-card.show{opacity:1;transform:translate(-50%,0) scale(1)}
    .welcome-royal-card.leaving{opacity:0;transform:translate(-50%,-7px) scale(.992)}
    .welcome-royal-title{margin:0 0 9px;color:#d8bd72;font-size:17px;font-weight:900;letter-spacing:-.2px}
    .welcome-royal-text{margin:0;color:#eee9dc;font-size:12px;font-weight:600;line-height:2}
    .welcome-royal-footer{margin-top:9px;padding-top:9px;border-top:1px solid rgba(201,169,86,.22);color:#cdbb8b;font-size:11px;font-weight:750}

    .reset-app-overlay{position:fixed;inset:0;z-index:10150;display:flex;align-items:center;justify-content:center;background:rgba(11,16,29,.30);backdrop-filter:none;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .22s ease,visibility .22s ease}
    .reset-app-overlay.open{opacity:1;visibility:visible;pointer-events:auto}
    .reset-app-card{position:relative;width:min(410px,calc(100vw - 32px));padding:25px 25px 22px;border-radius:20px;background:#fbfaf7;border:1px solid rgba(28,38,68,.10);box-shadow:0 24px 70px rgba(12,17,30,.22);color:#202638;direction:rtl;text-align:center;transform:translateY(8px) scale(.975);opacity:0;transition:transform .28s cubic-bezier(.2,.8,.2,1),opacity .22s ease}
    .reset-app-overlay.open .reset-app-card{transform:none;opacity:1}
    .reset-app-card::before{content:"";position:absolute;top:0;right:24px;left:24px;height:3px;border-radius:0 0 4px 4px;background:linear-gradient(90deg,transparent,#b79a52,transparent)}
    .reset-app-close{position:absolute;top:12px;left:12px;width:31px;height:31px;border:0;border-radius:9px;background:#f0eee8;color:#697083;cursor:pointer;display:grid;place-items:center;font-size:12px}
    .reset-app-symbol{width:50px;height:50px;margin:2px auto 13px;border-radius:15px;display:grid;place-items:center;color:#b09349;background:linear-gradient(145deg,#f5eedc,#fffdf7);border:1px solid rgba(176,147,73,.20);font-size:18px}
    .reset-app-card h3{margin:0 0 8px;font-size:16px;font-weight:900;color:#1f2944}
    .reset-app-card p{margin:0;font-size:12px;font-weight:700;color:#555d70;line-height:1.9}
    .reset-app-note{display:block;margin-top:7px;color:#8a8f9b;font-size:10px;line-height:1.8}
    .reset-app-actions{display:flex;justify-content:center;gap:8px;margin-top:19px}
    .reset-app-actions button{min-width:112px;height:36px;border-radius:9px;font-family:inherit;font-size:11px;font-weight:850;cursor:pointer}
    .reset-app-cancel{border:1px solid #ddd9cf;background:#f4f2ed;color:#626877}
    .reset-app-confirm{border:1px solid #233154;background:#233154;color:#f5ecd5;box-shadow:0 7px 18px rgba(35,49,84,.14)}
    
    .shb-ratio-select {
      padding: 4px 12px;
      border-radius: 6px;
      border: 1px solid rgba(0,0,0,0.08);
      background: #fff;
      font-size: 12px;
      color: #333;
      cursor: pointer;
      outline: none;
      min-width: 100px;
      height: 30px;
      font-family: inherit;
    }
    .shb-ratio-select:focus { border-color: #667eea; box-shadow: 0 0 0 2px rgba(102,126,234,0.2); }
    body.night-mode .shb-ratio-select { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.06); color: #ddd; }
    
    .shb-model-group { background: rgba(100,120,255,0.06); border-color: rgba(100,120,255,0.10); }
    .shb-model-group .current-model-name { color: #667eea; font-weight: 700; font-size: 13px; padding: 0 4px; }
    .shb-model-group .library-btn { padding: 4px 14px; border: none; border-radius: 8px; background: rgba(100,120,255,0.2); color: #667eea; font-size: 12px; font-weight: 700; cursor: pointer; transition: all 0.2s; display: flex; align-items: center; gap: 4px; white-space: nowrap; }
    .shb-model-group .library-btn:hover { background: rgba(100,120,255,0.35); transform: scale(1.03); }
    .shb-model-group .library-btn i { font-size: 13px; }
    
    .shb-export-name { width: 110px; padding: 5px 10px; border-radius: 6px; border: 1px solid rgba(0,0,0,0.08); background: #fff; font-size: 11px; text-align: right; outline: none; }
    .shb-export-name:focus { border-color: #888; }
    
    .shb-format-group { display: flex; gap: 2px; }
    .shb-format-group .format-btn { padding: 4px 12px; border: 1px solid rgba(0,0,0,0.08); background: #fff; color: #666; font-size: 11px; font-weight: 700; cursor: pointer; transition: all 0.15s; border-radius: 4px; }
    .shb-format-group .format-btn.active { background: rgba(50,50,80,0.9); color: #fff; border-color: rgba(50,50,80,0.9); }
    .shb-format-group .format-btn:first-child { border-radius: 4px 0 0 4px; }
    .shb-format-group .format-btn:last-child { border-radius: 0 4px 4px 0; }
    
    .shb-export-main { padding: 5px 16px; border: none; border-radius: 6px; background: linear-gradient(135deg, #667eea, #764ba2); color: #fff; font-size: 12px; font-weight: 700; cursor: pointer; transition: all 0.15s; display: flex; align-items: center; gap: 6px; }
    .shb-export-main:hover { transform: scale(1.03); box-shadow: 0 2px 12px rgba(102,126,234,0.3); }
    .shb-export-main:disabled { opacity: 0.4; cursor: not-allowed; transform: none !important; }
    
    body.night-mode .shb-format-group .format-btn { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.06); color: #bbb; }
    body.night-mode .shb-format-group .format-btn.active { background: rgba(100,120,255,0.3); color: #fff; }
    body.night-mode .shb-export-main { background: linear-gradient(135deg, #667eea, #764ba2); }
    
    .shb-preset-group { display: flex; align-items: center; gap: 6px; background: rgba(0,0,0,0.03); border: 1px solid rgba(0,0,0,0.05); border-radius: 12px; padding: 6px 14px; flex-wrap: wrap; min-height: 40px; }
    .shb-preset-group .shb-label { font-size: 12px; font-weight: 700; color: #666; display: flex; align-items: center; gap: 4px; white-space: nowrap; }
    .shb-preset-group .shb-label i { color: #888; }
    .shb-preset-select { padding: 5px 12px; border-radius: 6px; border: 1px solid rgba(0,0,0,0.08); background: #fff; font-size: 12px; color: #333; cursor: pointer; outline: none; min-width: 100px; height: 32px; }
    .shb-preset-select:focus { border-color: #888; }
    .shb-preset-btn { padding: 5px 14px; border: none; border-radius: 6px; font-size: 11px; font-weight: 600; cursor: pointer; transition: all 0.15s; background: rgba(0,0,0,0.05); color: #555; display: flex; align-items: center; gap: 4px; white-space: nowrap; height: 32px; }
    .shb-preset-btn:hover { background: rgba(0,0,0,0.1); }
    .shb-preset-btn.save { background: rgba(40,160,80,0.12); color: #1e8449; }
    .shb-preset-btn.save:hover { background: rgba(40,160,80,0.2); }
    .shb-preset-btn.delete { background: rgba(220,60,60,0.1); color: #c0392b; }
    .shb-preset-btn.delete:hover { background: rgba(220,60,60,0.2); }
    .shb-preset-name-input { width: 90px; padding: 5px 10px; border-radius: 6px; border: 1px solid rgba(0,0,0,0.08); background: #fff; font-size: 12px; text-align: right; outline: none; height: 32px; }
    .shb-preset-name-input:focus { border-color: #888; }
    
    /* ================================================================ */
    /* LOCKS */
    /* ================================================================ */
    .shb-lock-group { display: flex; align-items: center; gap: 4px; }
    .shb-lock-btn { padding: 4px 10px; border: none; border-radius: 6px; font-size: 11px; font-weight: 600; cursor: pointer; transition: all 0.2s; display: flex; align-items: center; gap: 4px; white-space: nowrap; background: rgba(100,120,255,0.08); color: #4a56c9; min-height: 28px; font-family: inherit; }
    .shb-lock-btn:hover { background: rgba(100,120,255,0.16); transform: scale(1.02); }
    .shb-lock-btn .lock-icon { font-size: 13px; }
    .shb-lock-btn .lock-label { font-size: 10px; font-weight: 700; }
    .shb-lock-btn .lock-status { font-size: 12px; }
    .shb-lock-btn.locked { background: rgba(220,60,60,0.12); color: #c0392b; }
    .shb-lock-btn.locked:hover { background: rgba(220,60,60,0.2); }
    .shb-lock-btn.locked .lock-status { color: #e74c3c; }
    body.night-mode .shb-lock-btn { background: rgba(100,120,255,0.1); color: #8a9aff; }
    body.night-mode .shb-lock-btn:hover { background: rgba(100,120,255,0.2); }
    body.night-mode .shb-lock-btn.locked { background: rgba(220,60,60,0.15); color: #e74c3c; }
    
    .shb-spacer { flex: 1; }

    /* ================================================================ */
    /* CONTAINER */
    /* ================================================================ */
    #container { display: flex; height: calc(100vh - 64px - 56px - 48px); width: 100vw; flex: 1; }

    #leftPanel { width: 340px; min-width: 340px; background: rgba(255,255,255,0.95); backdrop-filter: blur(16px); border-left: 1px solid rgba(0,0,0,0.06); padding: 16px 14px; display: flex; flex-direction: column; gap: 8px; overflow-y: auto; color: #222; height: 100%; box-shadow: 4px 0 30px rgba(0,0,0,0.05); order: -1; }
    #rightPanel { width: 380px; min-width: 380px; background: rgba(255,255,255,0.95); backdrop-filter: blur(16px); border-right: 1px solid rgba(0,0,0,0.06); padding: 16px 14px; display: flex; flex-direction: column; gap: 8px; overflow-y: auto; color: #222; height: 100%; box-shadow: -4px 0 30px rgba(0,0,0,0.05); }
    #leftPanel::-webkit-scrollbar, #rightPanel::-webkit-scrollbar { width: 4px; }
    #leftPanel::-webkit-scrollbar-thumb, #rightPanel::-webkit-scrollbar-thumb { background: #ccc; border-radius: 10px; }
    .panel-title { font-size: 18px; font-weight: 700; color: #1a1a1a; padding-bottom: 10px; border-bottom: 2px solid #e8e8e8; display: flex; align-items: center; gap: 10px; position: sticky; top: 0; background: rgba(255,255,255,0.95); z-index: 10; }

    #canvas-wrapper { flex: 1; min-width: 0; min-height: 0; height: 100%; position: relative; background: #FFFFFF; overflow: hidden; display: flex; align-items: center; justify-content: center; }
    #canvas-wrapper canvas { display: block; border-radius: 12px; position: relative; z-index: 1; visibility: visible; opacity: 1; }

    /* ================================================================ */
    /* FOOTER */
    /* ================================================================ */
    #app-footer {
      height: 56px;
      background: linear-gradient(135deg, rgba(40,50,70,0.95), rgba(30,40,60,0.92));
      backdrop-filter: blur(12px);
      border-top: 1px solid rgba(255,255,255,0.06);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 0 20px;
      color: #ccc;
      font-size: 13px;
      flex-shrink: 0;
      z-index: 100;
      position: relative;
    }
    #app-footer .footer-center { display: flex; align-items: center; gap: 16px; position: absolute; left: 50%; transform: translateX(-50%); }
    #app-footer .footer-center .creator-name { font-weight: 700; font-size: 14px; letter-spacing: 0.5px; }
    #app-footer .footer-center .creator-name .yasin-name {
      background: linear-gradient(135deg, #667eea, #764ba2);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    #app-footer .footer-text {
      font-weight: 400;
      color: #777;
      position: absolute;
      left: 20px;
      font-size: 11px;
    }
    .footer-links { display: none; }

    /* ================================================================ */
    /* COLLAPSIBLE */
    /* ================================================================ */
    .collapsible { background: rgba(0,0,0,0.02); border-radius: 12px; border: 1px solid rgba(0,0,0,0.04); overflow: hidden; flex-shrink: 0; }
    .collapsible-header { padding: 10px 14px; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-weight: 600; font-size: 13px; color: #333; user-select: none; background: rgba(0,0,0,0.02); transition: background 0.2s; }
    .collapsible-header:hover { background: rgba(0,0,0,0.04); }
    .collapsible-header .arrow { transition: transform 0.3s ease; font-size: 12px; color: #888; }
    .collapsible-header .arrow.open { transform: rotate(180deg); }
    .collapsible-body { padding: 0 14px 14px 14px; display: none; overflow: visible; }
    .collapsible-body.open { display: block; }
    
    .control-group { margin-top: 6px; }
    .control-group label { display: flex; justify-content: space-between; align-items: center; font-size: 12px; font-weight: 500; color: #444; margin-bottom: 3px; }
    .slider-input-row { display: flex; gap: 8px; align-items: center; }
    .slider-input-row input[type="range"] { flex: 1; -webkit-appearance: none; appearance: none; height: 14px; background: transparent; cursor: pointer; }
    .slider-input-row input[type="range"]::-webkit-slider-runnable-track { height: 3px; background: #ddd; border-radius: 10px; }
    .slider-input-row input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 14px; height: 14px; border-radius: 50%; background: #555; cursor: pointer; margin-top: -5.5px; border: none; }
    .slider-input-row input[type="range"]::-moz-range-track { height: 3px; background: #ddd; border-radius: 10px; }
    .slider-input-row input[type="range"]::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: #555; cursor: pointer; border: none; }
    .slider-input-row input[type="number"] { width: 60px; padding: 2px 4px; background: rgba(0,0,0,0.04); border: 1px solid rgba(0,0,0,0.08); border-radius: 6px; color: #222; font-size: 12px; text-align: center; font-weight: 500; }
    .slider-input-row input[type="number"]:focus { outline: none; border-color: #888; }
    .slider-input-row input[type="number"]:disabled { opacity: 0.4; cursor: not-allowed; }
    .slider-input-row input[type="range"]:disabled { opacity: 0.4; cursor: not-allowed; }
    
    .color-row { display: flex; align-items: center; gap: 10px; margin-top: 3px; flex-wrap: wrap; }
    .color-row .custom-color-wrap { display: flex; align-items: center; gap: 6px; }
    .color-row .custom-color-wrap input[type="color"] { width: 32px; height: 32px; border: 2px solid rgba(0,0,0,0.1); border-radius: 50%; padding: 2px; cursor: pointer; background: transparent; }
    .color-row .custom-color-wrap input[type="color"]:disabled { opacity: 0.4; cursor: not-allowed; }
    .color-row .custom-color-wrap .color-label { font-size: 10px; color: #888; }
    .color-row .custom-color-wrap .color-label.disabled { color: #ccc; }
    
    .action-row { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 3px; }
    .btn { flex: 1; padding: 6px 10px; border: none; border-radius: 30px; font-size: 11px; font-weight: 600; cursor: pointer; transition: all 0.2s; background: rgba(0,0,0,0.04); color: #333; border: 1px solid rgba(0,0,0,0.06); display: flex; align-items: center; justify-content: center; gap: 4px; min-width: 60px; }
    .btn:hover { background: rgba(0,0,0,0.08); transform: scale(1.02); }
    .btn:active { transform: scale(0.96); }
    .btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none !important; }
    .btn-primary { background: rgba(50,50,80,0.08); border-color: rgba(50,50,80,0.15); }
    .btn-primary:hover { background: rgba(50,50,80,0.15); }
    .btn-success { background: rgba(40,160,80,0.08); border-color: rgba(40,160,80,0.12); }
    .btn-success:hover { background: rgba(40,160,80,0.15); }
    .btn-danger { background: rgba(220,60,60,0.08); border-color: rgba(220,60,60,0.18); color: #c0392b; }
    .btn-danger:hover { background: rgba(220,60,60,0.18); }
    .btn-reset { background: rgba(220,160,60,0.08); border-color: rgba(220,160,60,0.18); color: #b7950b; padding: 4px 10px; font-size: 10px; min-width: 0; flex: 0 0 auto; }
    .btn-reset:hover { background: rgba(220,160,60,0.18); }
    
    .btn-secondary { background: rgba(0,0,0,0.04); border: 1px solid rgba(0,0,0,0.08); color: #666; padding: 12px 16px; border-radius: 12px; font-size: 13px; font-weight: 600; cursor: pointer; transition: all 0.2s; font-family: inherit; }
    .btn-secondary:hover { background: rgba(0,0,0,0.08); }
    body.night-mode .btn-secondary { background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.06); color: #aaa; }
    body.night-mode .btn-secondary:hover { background: rgba(255,255,255,0.08); }
    
    .hint { font-size: 10px; color: #888; margin-top: 2px; opacity: 0.7; }
    .checkbox-row { display: flex; align-items: center; gap: 8px; font-size: 12px; color: #444; margin: 3px 0; }
    .checkbox-row input[type="checkbox"] { width: 14px; height: 14px; accent-color: #555; cursor: pointer; }
    .radio-group { display: flex; gap: 4px; margin-top: 4px; flex-wrap: wrap; }
    .radio-group label { display: flex; align-items: center; gap: 4px; font-size: 12px; color: #444; cursor: pointer; padding: 4px 10px; border-radius: 20px; border: 1px solid rgba(0,0,0,0.06); background: rgba(0,0,0,0.02); transition: all 0.2s; }
    .radio-group label:hover { background: rgba(0,0,0,0.06); }
    .radio-group label.active { background: rgba(0,0,0,0.08); border-color: #888; }
    .radio-group input[type="radio"] { accent-color: #555; cursor: pointer; margin: 0; }
    .bg-color-option { width: 28px; height: 28px; border-radius: 50%; border: 2px solid rgba(0,0,0,0.1); cursor: pointer; transition: all 0.2s; display: inline-block; flex-shrink: 0; }
    .bg-color-option:hover { transform: scale(1.1); }
    .bg-color-option.active { border-color: #222; box-shadow: 0 0 0 2px rgba(0,0,0,0.2); }
    
    .file-input-wrapper { display: flex; gap: 6px; align-items: center; margin-top: 4px; flex-wrap: wrap; }
    .file-input-wrapper input[type="file"] { display: none; }
    .file-input-wrapper .file-label { padding: 4px 12px; background: rgba(0,0,0,0.06); border-radius: 20px; font-size: 11px; cursor: pointer; border: 1px solid rgba(0,0,0,0.08); transition: all 0.2s; color: #444; white-space: nowrap; }
    .file-input-wrapper .file-label:hover { background: rgba(0,0,0,0.12); }

    .tab-container { display: flex; gap: 4px; background: rgba(0,0,0,0.04); border-radius: 10px; padding: 4px; flex-shrink: 0; }
    .tab-btn { flex: 1; padding: 6px 12px; border: none; border-radius: 8px; font-size: 12px; font-weight: 600; cursor: pointer; transition: all 0.2s; background: transparent; color: #888; }
    .tab-btn.active { background: #fff; color: #222; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
    .tab-btn:hover:not(.active) { background: rgba(255,255,255,0.3); }
    .tab-btn.hidden { display: none; }
    .tab-content { display: none; flex-direction: column; gap: 8px; flex: 1; overflow-y: auto; }
    .tab-content.active { display: flex; }

    .face-texture-grid { display: grid; grid-template-columns: 1fr; gap: 8px; margin-top: 6px; }
    .face-texture-item { display: flex; flex-direction: column; gap: 4px; background: rgba(0,0,0,0.02); border-radius: 6px; padding: 6px 8px; border: 1px solid rgba(0,0,0,0.04); }
    .face-texture-item .face-label { font-size: 10px; font-weight: 600; color: #666; }
    .face-texture-item .file-input-wrapper { margin-top: 0; gap: 4px; }
    .face-texture-item .file-input-wrapper .file-label { font-size: 10px; padding: 3px 10px; }
    .face-action-row { display: flex; gap: 4px; margin-top: 4px; flex-wrap: wrap; }
    .face-action-row .btn { padding: 4px 8px; font-size: 10px; flex: 1; min-width: 0; }
    
    .material-hint { font-size: 10px; color: #888; background: rgba(100,120,255,0.06); padding: 6px 10px; border-radius: 6px; border: 1px solid rgba(100,120,255,0.08); margin-bottom: 6px; text-align: center; }
    .material-hint i { color: #667eea; margin-left: 4px; }

    .texture-slot { border: 1px solid rgba(0,0,0,0.08); border-radius: 8px; padding: 10px; margin-bottom: 8px; background: rgba(0,0,0,0.02); transition: all 0.2s; }
    .texture-slot:hover { background: rgba(0,0,0,0.04); }
    .texture-slot .slot-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
    .texture-slot .slot-name { font-size: 12px; font-weight: 600; color: #444; }
    .texture-slot .slot-status { font-size: 11px; color: #999; }
    .texture-slot .slot-status.loaded { color: #27ae60; }
    .texture-slot .slot-action-row { display: flex; gap: 4px; margin-top: 4px; flex-wrap: wrap; }
    .texture-slot .slot-action-row .btn { padding: 4px 8px; font-size: 10px; flex: 1; min-width: 0; }
    .material-select-row { display: flex; align-items: center; gap: 6px; margin-top: 6px; }
    .material-select-row label { font-size: 10px; color: #888; white-space: nowrap; }
    .material-select { flex: 1; padding: 5px 8px; border-radius: 7px; border: 1px solid rgba(0,0,0,0.08); background: #fff; font-size: 11px; color: #333; cursor: pointer; outline: none; }
    .material-select:focus { border-color: #888; }


/* Always-open, unboxed lighting and shadow controls; only horizontal section dividers. */
#leftPanel .light-section{flex-shrink:0;padding:0 0 12px;background:transparent;border:0;border-radius:0;overflow:visible}
#leftPanel .light-section+.light-section{border-top:1px solid rgba(0,0,0,.29);padding-top:12px}
#leftPanel .light-section-title{display:flex;align-items:center;padding:6px 4px 11px;font-weight:700;font-size:13px;color:inherit;cursor:default;background:transparent}
#leftPanel .light-section-body{display:block;padding:0 6px 2px;overflow:visible}
body.night-mode #leftPanel .light-section+.light-section{border-top-color:rgba(255,255,255,.35)}


/* 2026-09-17 UI round 2: compact single-line lighting controls. */
#leftPanel .light-section-body .control-group,
#objDimensionPanel .control-group:has(> .slider-input-row){
  display:grid;
  grid-template-columns:112px minmax(0,1fr);
  gap:7px;
  align-items:center;
  margin-top:10px;
}
#leftPanel .light-section-body .control-group > label,
#objDimensionPanel .control-group:has(> .slider-input-row) > label{
  display:block;
  margin:0;
  font-size:10.5px;
  line-height:1.45;
  white-space:nowrap;
  text-align:right;
}
#leftPanel .light-section-body .slider-input-row,
#objDimensionPanel .control-group:has(> .slider-input-row) > .slider-input-row{
  display:flex;
  align-items:center;
  gap:6px;
  width:100%;
  min-width:0;
}
#leftPanel .light-section-body .slider-input-row > input[type="range"],
#objDimensionPanel .control-group:has(> .slider-input-row) input[type="range"]{
  flex:1 1 0;
  min-width:0;
  width:100%;
}
#leftPanel .light-section-body .slider-input-row > input[type="number"],
#objDimensionPanel .control-group:has(> .slider-input-row) input[type="number"]{
  flex:0 0 43px;
  width:43px;
  min-width:43px;
  padding-inline:2px;
  direction:ltr;
}
#leftPanel .mm-environment-preset-row > select{
  display:block;
  width:100%;
  min-width:0;
  max-width:100%;
}
#leftPanel .light-color-inline input[type="color"]{
  flex:0 0 30px;
  width:30px!important;
  min-width:30px!important;
}
@media (max-width:1100px){
  #leftPanel .light-section-body .control-group,
  #objDimensionPanel .control-group:has(> .slider-input-row){grid-template-columns:103px minmax(0,1fr);gap:6px}
  #leftPanel .light-section-body .control-group > label{font-size:9.6px}
  #leftPanel .light-section-body .slider-input-row{gap:4px}
  #leftPanel .light-section-body .slider-input-row > input[type="number"]{flex-basis:40px;min-width:40px;width:40px}
  #leftPanel .light-color-inline input[type="color"]{flex-basis:28px;width:28px!important;min-width:28px!important}
}

/* Unselectable interface chrome; search and all editable inputs retain selection. */
html, body, body *{
  -webkit-user-select:none!important;
  user-select:none!important;
}
input:is([type="text"],[type="search"],[type="number"],[type="email"],[type="password"],[type="tel"],[type="url"]),
input:not([type]), textarea, [contenteditable=""], [contenteditable="true"],
[contenteditable=""] *, [contenteditable="true"] *{
  -webkit-user-select:text!important;
  user-select:text!important;
}

/* Match the initial viewport stage to the scene default. */
#viewport-stage{background-color:#ffffff}


/* 2026-09-17 UI round 3: static model sections, matching lighting/shadow controls. */
#rightPanel .mm-flat-section.collapsible{
  flex-shrink:0;
  background:transparent !important;
  border:0 !important;
  border-radius:0 !important;
  box-shadow:none !important;
  overflow:visible !important;
}
#rightPanel .mm-flat-section-title{
  display:flex;
  align-items:center;
  gap:6px;
  padding:6px 4px 11px;
  color:inherit;
  font-size:13px;
  font-weight:700;
  cursor:default;
  background:transparent;
}
#rightPanel .mm-flat-section > .collapsible-body{
  display:block !important;
  padding:0 6px 8px !important;
  overflow:visible;
}
#cubeSurfaceSlot, #objSurfaceSlot{
  border-top:1px solid rgba(0,0,0,.29);
  padding-top:12px;
}
body.night-mode #cubeSurfaceSlot,
body.night-mode #objSurfaceSlot{
  border-top-color:rgba(255,255,255,.35);
}