:root {
  --bg:#f5f0eb; --panel-bg:#fff; --text:#2c2420; --text-muted:#8a7e76;
  --accent:#b8860b; --accent-light:#daa520; --border:#e0d6cc;
  --shadow:rgba(44,36,32,0.08); --shadow-md:rgba(44,36,32,0.12);
  --sold-red:#c0392b; --success:#27ae60; --collision:#e74c3c;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'DM Sans',sans-serif;background:var(--bg);color:var(--text);overflow:hidden;height:100vh;display:flex;flex-direction:column}

/* ===== LOGIN GATE ===== */
.login-overlay{position:fixed;inset:0;background:var(--bg);display:flex;align-items:center;justify-content:center;z-index:9999;transition:opacity .4s}
.login-overlay.hidden{opacity:0;pointer-events:none}
.login-box{background:var(--panel-bg);border-radius:16px;padding:40px;width:360px;max-width:90vw;box-shadow:0 20px 60px rgba(0,0,0,.12);text-align:center}
.login-box .logo{margin-bottom:6px}
.login-box .logo img{height:60px;display:block;margin:0 auto}
.login-box p{font-size:13px;color:var(--text-muted);margin-bottom:20px}
.login-box input{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:8px;font-family:'DM Sans',sans-serif;font-size:14px;text-align:center;outline:none;transition:border-color .2s}
.login-box input:focus{border-color:var(--accent)}
.login-box .login-btn{width:100%;padding:10px;border:none;border-radius:8px;background:var(--accent);color:#fff;font-family:'DM Sans',sans-serif;font-size:14px;font-weight:600;cursor:pointer;margin-top:10px;transition:background .2s}
.login-box .login-btn:hover{background:var(--accent-light)}
.login-error{color:var(--sold-red);font-size:12px;margin-top:8px;min-height:18px}

header{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;background:var(--panel-bg);border-bottom:1px solid var(--border);z-index:100;flex-shrink:0}
.logo{display:flex;align-items:center}
.logo img{height:36px}
.header-controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.spacing-badge{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:6px;font-size:11px;font-weight:500;background:#fef9ef;border:1px solid #f0dca0;color:var(--accent)}
.btn{padding:6px 14px;border:1px solid var(--border);border-radius:6px;background:var(--panel-bg);color:var(--text);font-family:'DM Sans',sans-serif;font-size:12px;font-weight:500;cursor:pointer;transition:all .2s;white-space:nowrap}
.btn:hover{background:var(--bg);border-color:var(--accent)}
.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn.primary:hover{background:var(--accent-light)}
.btn-group{display:flex;gap:4px}

.main{display:flex;flex:1;overflow:hidden}

/* ===== SIDEBAR ===== */
.sidebar{width:260px;min-width:260px;background:var(--panel-bg);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:50}
.sidebar-header{padding:12px 14px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}
.sidebar-header h3{font-size:13px;font-weight:600}
.painting-count{font-size:11px;color:var(--text-muted);background:var(--bg);padding:2px 8px;border-radius:10px}
.sidebar-actions{padding:8px 14px;border-bottom:1px solid var(--border);display:flex;gap:6px}
.sidebar-actions .btn{flex:1;font-size:11px;padding:5px 6px;text-align:center}
.painting-list{flex:1;overflow-y:auto;padding:6px}
.painting-list::-webkit-scrollbar{width:5px}
.painting-list::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}

.painting-card{display:flex;gap:8px;padding:8px;border-radius:6px;cursor:grab;transition:all .15s;margin-bottom:3px;border:1px solid transparent;position:relative}
.painting-card:hover{background:var(--bg);border-color:var(--border)}
.painting-card.dragging{opacity:.4}
.painting-card.on-wall{opacity:.5}
.painting-card.on-wall::after{content:'ON WALL';position:absolute;top:5px;right:5px;font-size:8px;font-weight:700;color:var(--success);background:#e8f5e9;padding:1px 5px;border-radius:3px}
.painting-number{position:absolute;top:4px;left:4px;width:20px;height:20px;border-radius:50%;background:var(--accent);color:#fff;font-size:10px;font-weight:700;display:flex;align-items:center;justify-content:center;z-index:2;line-height:1}
.painting-thumb{width:52px;height:52px;border-radius:4px;object-fit:cover;flex-shrink:0;background:var(--bg)}
.painting-info{flex:1;min-width:0}
.painting-title{font-size:12px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:1px}
.painting-artist{font-size:10px;color:var(--text-muted);margin-bottom:2px}
.painting-meta{font-size:9px;color:var(--text-muted);line-height:1.4}
.painting-price{font-size:11px;font-weight:600;color:var(--accent)}
.painting-sold{color:var(--sold-red);font-weight:700;font-size:9px;margin-left:3px}
.painting-location{font-size:8px;color:var(--accent);background:#fef9ef;border:1px solid #f0dca0;padding:1px 5px;border-radius:3px;margin-top:2px;display:inline-block}

/* ===== WALL AREA ===== */
.wall-area{flex:1;display:flex;flex-direction:column;overflow:hidden}
.wall-tabs{display:flex;align-items:center;gap:4px;padding:8px 16px;background:var(--panel-bg);border-bottom:1px solid var(--border);flex-shrink:0;overflow-x:auto}
.wall-tab{padding:5px 14px;border-radius:6px;font-size:12px;font-weight:500;cursor:pointer;border:1px solid transparent;transition:all .15s;white-space:nowrap;color:var(--text-muted)}
.wall-tab:hover{background:var(--bg);color:var(--text)}
.wall-tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.wall-tab .tab-close{margin-left:6px;font-size:14px;opacity:.6;cursor:pointer}
.wall-tab .tab-close:hover{opacity:1}
.add-wall-btn{padding:5px 10px;border-radius:6px;font-size:16px;cursor:pointer;border:1px dashed var(--border);background:transparent;color:var(--text-muted);transition:all .15s}
.add-wall-btn:hover{border-color:var(--accent);color:var(--accent)}

.wall-viewport{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:12px;overflow:auto;position:relative}
.wall-full-assembly{display:flex;flex-direction:column;align-items:center;gap:16px}
.wall-row{display:flex;align-items:flex-end}
.wall-row-label{font-size:10px;color:var(--text-muted);font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-bottom:3px;text-align:center}

/* ===== WALL SECTIONS ===== */
.wall-section{position:relative;border-radius:2px;box-shadow:0 2px 12px var(--shadow-md);overflow:hidden;flex-shrink:0}
.wall-section-texture{position:absolute;inset:0;background-image:repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(0,0,0,.006) 2px,rgba(0,0,0,.006) 4px);pointer-events:none}
.wall-section-label{position:absolute;bottom:4px;left:50%;transform:translateX(-50%);font-size:8px;color:rgba(0,0,0,.2);font-weight:500;pointer-events:none;white-space:nowrap}
.section-grid{position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .3s}
.section-grid.visible{opacity:1}
.section-drop-indicator{position:absolute;inset:0;border:2px dashed var(--accent);background:rgba(184,134,11,.05);display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--accent);font-weight:500;opacity:0;pointer-events:none;transition:opacity .2s;z-index:100}
.section-drop-indicator.active{opacity:1}
.spacing-zone{position:absolute;border:1px dashed rgba(184,134,11,.3);background:rgba(184,134,11,.04);border-radius:2px;pointer-events:none;z-index:5}
.padding-zone{position:absolute;pointer-events:none;z-index:3}
.padding-zone-border{position:absolute;border:1px dashed rgba(184,134,11,.25);pointer-events:none}
.section-gear{position:absolute;top:4px;right:4px;width:22px;height:22px;border-radius:4px;background:rgba(255,255,255,.85);border:1px solid rgba(0,0,0,.15);cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:60;font-size:12px;opacity:.5;transition:all .15s}
.section-gear:hover{opacity:1;background:#fff;border-color:var(--accent);transform:scale(1.1)}
.section-divider{width:1px;background:rgba(0,0,0,.08);align-self:stretch;flex-shrink:0}

/* ===== WALL PAINTINGS ===== */
.wall-painting{position:absolute;cursor:grab;transition:box-shadow .2s;z-index:10;user-select:none}
.wall-painting:hover{z-index:20}
.wall-painting.selected{z-index:30;outline:2px solid var(--accent);outline-offset:3px}
.wall-painting.dragging-on-wall{cursor:grabbing;box-shadow:0 8px 32px rgba(0,0,0,.25);z-index:40}
.wall-painting.collision{outline:2px solid var(--collision)!important;outline-offset:3px}
.wall-painting-frame{position:relative;width:100%;height:100%;box-shadow:0 3px 12px rgba(0,0,0,.15),0 1px 3px rgba(0,0,0,.1),inset 0 0 0 3px rgba(139,119,101,.3);border-radius:1px;overflow:hidden}
.wall-painting-frame img{width:100%;height:100%;object-fit:cover;display:block}
.wall-painting-number{position:absolute;top:-4px;left:-4px;min-width:18px;height:18px;border-radius:50%;background:var(--accent);color:#fff;font-size:9px;font-weight:700;display:flex;align-items:center;justify-content:center;z-index:55;border:2px solid #fff;line-height:1;padding:0 3px}
.wall-painting-label{position:absolute;bottom:-22px;left:50%;transform:translateX(-50%);white-space:nowrap;font-size:8px;color:var(--text-muted);background:rgba(255,255,255,.85);padding:2px 5px;border-radius:3px;opacity:0;transition:opacity .2s;pointer-events:none}
.wall-painting:hover .wall-painting-label,.wall-painting.selected .wall-painting-label{opacity:1}
.wall-painting-remove{position:absolute;top:-8px;right:-8px;width:18px;height:18px;border-radius:50%;background:var(--sold-red);color:#fff;border:2px solid #fff;font-size:10px;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .15s;z-index:50;line-height:1}
.wall-painting:hover .wall-painting-remove,.wall-painting.selected .wall-painting-remove{opacity:1}

/* ===== ZOOM CONTROLS ===== */
.zoom-controls{position:absolute;top:8px;right:16px;display:flex;align-items:center;gap:4px;background:rgba(255,255,255,.9);padding:4px 8px;border-radius:8px;box-shadow:0 2px 8px var(--shadow);z-index:80}
.zoom-btn{width:28px;height:28px;border:1px solid var(--border);border-radius:6px;background:var(--panel-bg);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;color:var(--text);transition:all .15s}
.zoom-btn:hover{background:var(--bg);border-color:var(--accent)}
.zoom-level{font-size:11px;font-weight:600;color:var(--text-muted);min-width:42px;text-align:center}

.scale-indicator{position:absolute;bottom:8px;right:16px;display:flex;align-items:center;gap:6px;font-size:10px;color:var(--text-muted);background:rgba(255,255,255,.8);padding:3px 8px;border-radius:4px}
.scale-bar{height:2px;background:var(--text-muted);position:relative}
.scale-bar::before,.scale-bar::after{content:'';position:absolute;width:2px;height:7px;background:var(--text-muted);top:-2.5px}
.scale-bar::before{left:0}
.scale-bar::after{right:0}

/* ===== MODALS ===== */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;z-index:1000;opacity:0;pointer-events:none;transition:opacity .2s}
.modal-overlay.open{opacity:1;pointer-events:auto}
.modal{background:var(--panel-bg);border-radius:12px;padding:24px;width:680px;max-width:90vw;max-height:80vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.modal h2{font-family:'Playfair Display',serif;font-size:18px;margin-bottom:4px}
.modal p{font-size:12px;color:var(--text-muted);margin-bottom:14px;line-height:1.5}
.modal textarea{width:100%;height:160px;border:1px solid var(--border);border-radius:8px;padding:10px;font-family:'DM Sans',monospace;font-size:11px;resize:vertical;background:var(--bg);color:var(--text);line-height:1.5}
.modal textarea:focus{outline:none;border-color:var(--accent)}
.modal-buttons{display:flex;justify-content:flex-end;gap:8px;margin-top:14px}
.file-drop-area{border:2px dashed var(--border);border-radius:8px;padding:16px;text-align:center;margin-bottom:10px;cursor:pointer;transition:all .2s}
.file-drop-area:hover{border-color:var(--accent);background:rgba(184,134,11,.03)}
.file-drop-area p{margin-bottom:0}
.rename-input{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:6px;font-family:'DM Sans',sans-serif;font-size:14px;margin-top:8px}
.rename-input:focus{outline:none;border-color:var(--accent)}

/* ===== PADDING EDITOR ===== */
.padding-form{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
.padding-field{display:flex;flex-direction:column;gap:3px}
.padding-field label{font-size:11px;font-weight:600;color:var(--text-muted)}
.padding-field input{padding:6px 10px;border:1px solid var(--border);border-radius:6px;font-family:'DM Sans',sans-serif;font-size:13px;width:100%}
.padding-field input:focus{outline:none;border-color:var(--accent)}

/* ===== PROJECT PICKER ===== */
.project-list{margin:14px 0;display:flex;flex-direction:column;gap:6px}
.project-item{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border:1px solid var(--border);border-radius:8px;cursor:pointer;transition:all .15s}
.project-item:hover{background:var(--bg);border-color:var(--accent)}
.project-item-info{flex:1}
.project-item-name{font-size:14px;font-weight:600}
.project-item-meta{font-size:11px;color:var(--text-muted);margin-top:2px}
.project-item-delete{width:24px;height:24px;border-radius:50%;border:1px solid var(--border);background:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--text-muted);transition:all .15s;flex-shrink:0;margin-left:8px}
.project-item-delete:hover{background:var(--sold-red);color:#fff;border-color:var(--sold-red)}
.save-indicator{font-size:10px;color:var(--success);font-weight:500;display:none;align-items:center;gap:4px}
.save-indicator.visible{display:inline-flex}

/* ===== MISC ===== */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(60px);background:var(--text);color:#fff;padding:8px 18px;border-radius:8px;font-size:12px;z-index:2000;transition:transform .3s ease;pointer-events:none}
.toast.show{transform:translateX(-50%) translateY(0)}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:180px;color:var(--text-muted);font-size:12px;text-align:center;padding:16px;line-height:1.6}
.empty-state svg{margin-bottom:10px;opacity:.4}

@media print{
  @page{size:landscape;margin:.4in}
  body{overflow:visible!important;height:auto!important;background:#fff!important}
  header,.sidebar,.wall-tabs,.add-wall-btn,.wall-painting-remove,.scale-indicator,.zoom-controls,.toast,.modal-overlay,.section-drop-indicator,.spacing-zone,.padding-zone,.padding-zone-border,.section-gear,.login-overlay,.main{display:none!important}
  #printContainer{display:block!important}
  .print-page{page-break-after:always}
  .print-page:last-child{page-break-after:auto}
}
#printContainer{display:none}