@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap";:root{--bg-dark:#0f172a;--bg-panel:#1e293b;--bg-panel-hover:#334155;--border-color:#334155;--text-main:#f8fafc;--text-muted:#94a3b8;--accent:#3b82f6;--accent-hover:#2563eb;--success:#10b981}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-dark);color:var(--text-main);font-family:Inter,system-ui,-apple-system,sans-serif;overflow:hidden}.app-container{grid-template-rows:64px 1fr;grid-template-columns:260px 1fr 300px;width:100vw;height:100vh;display:grid}.topbar{background-color:var(--bg-panel);border-bottom:1px solid var(--border-color);z-index:10;grid-column:1/4;justify-content:space-between;align-items:center;padding:0 24px;display:flex;box-shadow:0 4px 12px #0003}.topbar-logo{color:var(--accent);align-items:center;gap:8px;font-size:1.25rem;font-weight:600;display:flex}.sidebar{background-color:var(--bg-panel);border-right:1px solid var(--border-color);grid-column:1;padding:24px 20px;overflow-y:auto}.canvas-area{background-color:#0f172a;background-image:linear-gradient(#1e293b 1px,#0000 1px),linear-gradient(90deg,#1e293b 1px,#0000 1px);background-size:20px 20px;flex:1;grid-column:2;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.properties-panel{background-color:var(--bg-panel);border-left:1px solid var(--border-color);flex-shrink:0;grid-column:3;width:300px;min-width:300px;padding:24px 20px;overflow-y:auto}.btn{background-color:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:6px;justify-content:center;align-items:center;gap:8px;padding:8px 16px;font-weight:500;transition:all .2s;display:inline-flex}.btn:hover{background-color:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px #3b82f666}.btn-secondary{border:1px solid var(--border-color);background-color:#0000}.btn-secondary:hover{background-color:var(--bg-panel-hover);box-shadow:none}.btn-icon{border:1px solid var(--border-color);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:6px;padding:8px;transition:all .2s}.btn-icon:hover{background:var(--bg-panel-hover);color:var(--text-main)}.shape-btn{border:1px solid var(--border-color);width:100%;color:var(--text-main);cursor:pointer;background-color:#0000;border-radius:8px;align-items:center;gap:12px;margin-bottom:8px;padding:12px 16px;transition:all .2s;display:flex}.shape-btn:hover{background-color:var(--bg-panel-hover);border-color:var(--accent);transform:translate(2px)}.section-title{text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);margin-top:24px;margin-bottom:16px;font-size:.75rem;font-weight:600}.section-title:first-child{margin-top:0}.input-group{margin-bottom:16px}.input-group label{color:var(--text-muted);justify-content:space-between;margin-bottom:8px;font-size:.85rem;display:flex}.input-group input[type=range]{width:100%;accent-color:var(--accent)}.input-group input[type=color]{border:1px solid var(--border-color);cursor:pointer;border-radius:6px;width:100%;height:40px;padding:0}.empty-state{text-align:center;color:var(--text-muted);flex-direction:column;align-items:center;gap:12px;padding:40px 20px;display:flex}.toggle-group{background:var(--bg-dark);border-radius:8px;margin-bottom:24px;padding:4px;display:flex}.toggle-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:6px;flex:1;padding:8px;font-size:.9rem;font-weight:500;transition:all .2s}.toggle-btn.active{background:var(--bg-panel);color:var(--text-main);box-shadow:0 2px 4px #0003}.modal-overlay{z-index:1000;background-color:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-content{background-color:var(--bg-dark);border:1px solid var(--border-color);border-radius:8px;flex-direction:column;width:600px;max-width:90vw;max-height:80vh;display:flex;box-shadow:0 20px 25px -5px #00000080}.modal-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.modal-header h2{margin:0;font-size:18px}.close-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none}.close-btn:hover{color:#fff}.modal-search{border-bottom:1px solid var(--border-color);align-items:center;gap:12px;padding:16px 20px;display:flex}.modal-search input{color:#fff;background:0 0;border:none;outline:none;flex:1;font-size:16px}.search-icon{color:var(--text-muted)}.modal-body{flex:1;padding:20px;overflow-y:auto}.shape-grid-section{margin-bottom:24px}.shape-grid-section .section-title{color:var(--text-muted);margin-bottom:12px;font-size:14px}.shape-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:12px;display:grid}.shape-card{border:1px solid var(--border-color);color:#fff;cursor:pointer;background-color:#ffffff0d;border-radius:6px;flex-direction:column;align-items:center;gap:10px;padding:16px 8px;transition:all .2s;display:flex}.shape-card:hover{background-color:var(--primary-color);border-color:var(--primary-color)}.shape-icon{justify-content:center;align-items:center;display:flex}.shape-name{text-align:center;font-size:12px}.expand-category-btn{border:1px dashed var(--border-color);width:100%;color:var(--text-muted);cursor:pointer;background-color:#0000;border-radius:6px;justify-content:center;align-items:center;gap:8px;margin-top:12px;padding:8px;transition:all .2s;display:flex}.expand-category-btn:hover{color:#fff;background-color:#ffffff0d}.tab-bar{background-color:var(--bg-darker);border-bottom:1px solid var(--border-color);align-items:center;height:40px;padding:0 16px;display:flex}.tabs-container{flex:1;gap:4px;display:flex;overflow-x:auto}.tabs-container::-webkit-scrollbar{height:0}.tab{border:1px solid var(--border-color);cursor:pointer;min-width:100px;max-width:200px;height:32px;color:var(--text-muted);background-color:#ffffff0d;border-bottom:none;border-radius:6px 6px 0 0;align-items:center;gap:8px;margin-top:8px;padding:0 12px;display:flex}.tab.active{background-color:var(--bg-dark);color:#fff;border-color:var(--primary-color);border-bottom:1px solid var(--bg-dark);z-index:10;margin-bottom:-1px}.tab-title{white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:13px;overflow:hidden}.tab-close-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px;display:flex}.tab-close-btn:hover{color:#fff;background-color:#ffffff1a}.tab-rename-input{border:1px solid var(--primary-color);color:#fff;background:0 0;outline:none;width:100%;padding:0 4px;font-size:13px}.tab-add-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:4px;margin-left:8px;padding:6px;display:flex}.tab-add-btn:hover{color:#fff;background-color:#ffffff1a}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.no-scrollbar::-webkit-scrollbar{display:none}.no-scrollbar{-ms-overflow-style:none;scrollbar-width:none}