:root{--bg-primary: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);--bg-card: linear-gradient(135deg, rgba(255, 255, 255, .98) 0%, rgba(255, 255, 255, .95) 100%);--bg-header: linear-gradient(135deg, rgba(255, 255, 255, .95) 0%, rgba(255, 255, 255, .9) 100%);--bg-sidebar: linear-gradient(180deg, rgba(255, 255, 255, .85) 0%, rgba(255, 255, 255, .75) 100%);--text-primary: #1e293b;--text-secondary: #64748b;--text-muted: #94a3b8;--border-color: rgba(0, 0, 0, .08);--shadow-light: rgba(0, 0, 0, .08);--shadow-medium: rgba(0, 0, 0, .15)}.dark-mode{--bg-primary: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);--bg-card: linear-gradient(135deg, rgba(30, 41, 59, .98) 0%, rgba(51, 65, 85, .95) 100%);--bg-header: linear-gradient(135deg, rgba(30, 41, 59, .95) 0%, rgba(51, 65, 85, .9) 100%);--bg-sidebar: linear-gradient(180deg, rgba(30, 41, 59, .85) 0%, rgba(51, 65, 85, .75) 100%);--text-primary: #f8fafc;--text-secondary: #e2e8f0;--text-muted: #cbd5e1;--border-color: rgba(255, 255, 255, .1);--shadow-light: rgba(0, 0, 0, .3);--shadow-medium: rgba(0, 0, 0, .4)}.app{min-height:100vh;background:var(--bg-primary);padding:0;transition:all .3s ease}.container{max-width:100%;margin:0;min-height:100vh;display:flex;flex-direction:column}.header{background:var(--bg-header);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);padding:1.5rem 3rem;box-shadow:0 2px 16px var(--shadow-light);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100;animation:fadeIn .5s ease-out;transition:all .3s ease}.header-main{display:flex;justify-content:space-between;align-items:center;gap:2rem}.header-left{display:flex;align-items:center;gap:2rem;flex:1}.header-logo{width:64px;height:64px;flex-shrink:0;filter:drop-shadow(0 2px 8px rgba(139,92,246,.3));transition:transform .3s ease}.header-logo:hover{transform:scale(1.08) rotate(2deg)}.header-title{flex-shrink:0}.header 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2px 8px #00000026;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none}.header-kebab-trigger:hover{transform:scale(1.1);box-shadow:0 4px 16px #667eea66}.header-kebab-dropdown{position:absolute;top:100%;right:0;margin-top:.5rem;background:var(--bg-card);border-radius:12px;box-shadow:0 8px 32px var(--shadow-medium);border:1px solid var(--border-color);overflow:hidden;z-index:1000;min-width:180px;animation:fadeInDropdown .2s ease-out}.header-kebab-item{display:flex;align-items:center;gap:.75rem;padding:.875rem 1.25rem;border:none;background:transparent;color:var(--text-primary);cursor:pointer;transition:all .2s ease;font-size:.9rem;font-weight:500;width:100%;text-align:left}.header-kebab-item:hover{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.header-kebab-logout:hover{background:linear-gradient(135deg,#fc8181,#f56565);color:#fff}.icon-btn{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s ease;box-shadow:0 2px 8px #00000026;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.icon-btn:hover{transform:scale(1.1);box-shadow:0 4px 12px #00000026}.icon-btn:active{transform:scale(.95)}.icon-btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none}.icon-btn-primary:hover{transform:scale(1.1);box-shadow:0 4px 16px #667eea66}.icon-btn-secondary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none}.icon-btn-secondary:hover{transform:scale(1.1);box-shadow:0 4px 16px #667eea66}.icon-btn-export{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none}.icon-btn-export:hover{transform:scale(1.1);box-shadow:0 4px 16px #667eea66}.icon-btn-danger{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none}.icon-btn-danger:hover{transform:scale(1.1);box-shadow:0 4px 16px #667eea66}.icon-btn-logout{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none}.icon-btn-logout:hover{transform:scale(1.1);box-shadow:0 4px 16px #667eea66}.btn-primary,.btn-secondary{padding:.75rem 1.5rem;border:none;border-radius:12px;cursor:pointer;display:flex;align-items:center;gap:.5rem;font-size:.95rem;font-weight:600;transition:all .3s ease;box-shadow:0 4px 12px #0000001a}.btn-primary{background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px 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ease}.sidebar::-webkit-scrollbar{width:8px}.sidebar::-webkit-scrollbar-track{background:#f1f5f9;border-radius:10px}.sidebar::-webkit-scrollbar-thumb{background:#cbd5e0;border-radius:10px}.sidebar::-webkit-scrollbar-thumb:hover{background:#94a3b8}.tree-container{display:flex;flex-direction:column;gap:.25rem}.tree-view{display:flex;flex-direction:column;gap:1rem}.tree-section{display:flex;flex-direction:column;gap:.25rem}.tree-section-header{display:flex;align-items:center;justify-content:space-between;padding:.5rem .75rem;font-size:.8rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;border-radius:6px;transition:all .2s ease;background:#ffffff4d;border:1px solid var(--border-color)}.dark-mode .tree-section-header{background:#ffffff1a}.dark-mode 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