:root{--bg-primary: #1a1a2e;--bg-content: #ffffff;--bg-surface: #f8f9fa;--bg-hover: #f3f4f6;--accent: #6366f1;--accent-hover: #4f46e5;--accent-light: #eef2ff;--success: #10b981;--success-light: #d1fae5;--warning: #f59e0b;--warning-light: #fef3c7;--danger: #ef4444;--danger-light: #fee2e2;--text-primary: #111827;--text-secondary: #6b7280;--text-tertiary: #9ca3af;--text-inverse: #ffffff;--border: #e5e7eb;--border-light: #f3f4f6;--shadow-sm: 0 1px 2px rgba(0,0,0,.05);--shadow-md: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -2px rgba(0,0,0,.05);--shadow-lg: 0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -4px rgba(0,0,0,.04);--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--transition: .2s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:14px;-webkit-text-size-adjust:100%}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--text-primary);background:var(--bg-content);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}h1,h2,h3,h4{line-height:1.3;font-weight:600}h1{font-size:1.75rem}h2{font-size:1.375rem}h3{font-size:1.125rem}h4{font-size:1rem}a{color:var(--accent);text-decoration:none}button{cursor:pointer;font-family:inherit;font-size:inherit;border:none;background:none;outline:none}input,select,textarea{font-family:inherit;font-size:inherit;border:1px solid var(--border);border-radius:var(--radius-md);padding:8px 12px;outline:none;transition:border-color var(--transition);background:var(--bg-content);color:var(--text-primary);width:100%}input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}.skeleton{background:linear-gradient(90deg,var(--bg-surface) 25%,var(--border-light) 50%,var(--bg-surface) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-md)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .3s ease forwards}.app-layout{display:flex;min-height:100vh}.sidebar{width:260px;background:var(--bg-primary);color:var(--text-inverse);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;transition:transform var(--transition)}.sidebar-header{padding:20px 20px 16px;border-bottom:1px solid rgba(255,255,255,.08)}.sidebar-logo{font-size:1.25rem;font-weight:700;letter-spacing:-.02em;display:flex;align-items:center;gap:10px}.sidebar-logo-dot{width:8px;height:8px;background:var(--accent);border-radius:50%;display:inline-block}.sidebar-section{padding:16px 12px 8px}.sidebar-section-title{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:#fff6;padding:0 8px;margin-bottom:4px}.sidebar-nav{flex:1;overflow-y:auto;padding:8px 12px}.sidebar-item{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:var(--radius-md);color:#ffffffb3;font-size:.9rem;font-weight:500;transition:all var(--transition);cursor:pointer;width:100%;text-align:left}.sidebar-item:hover{background:#ffffff14;color:#fff}.sidebar-item.active{background:#6366f133;color:#fff}.sidebar-item svg{width:18px;height:18px;flex-shrink:0}.sidebar-divider{height:1px;background:#ffffff14;margin:8px 12px}.sidebar-project-list{padding:4px 12px}.sidebar-project-item{display:flex;align-items:center;gap:10px;padding:7px 12px;border-radius:var(--radius-md);color:#ffffffa6;font-size:.85rem;transition:all var(--transition);cursor:pointer;width:100%;text-align:left}.sidebar-project-item:hover{background:#ffffff0f;color:#fff}.sidebar-project-item.active{background:#6366f126;color:#fff}.sidebar-project-dot{width:6px;height:6px;border-radius:50%;flex-shrink:0}.sidebar-views{padding:4px 12px}.sidebar-view-item{display:flex;align-items:center;gap:10px;padding:7px 12px 7px 20px;border-radius:var(--radius-md);color:#ffffff8c;font-size:.85rem;transition:all var(--transition);cursor:pointer;width:100%;text-align:left}.sidebar-view-item:hover{background:#ffffff0f;color:#ffffffe6}.sidebar-view-item.active{color:#fff;background:#6366f126}.sidebar-view-item svg{width:16px;height:16px;flex-shrink:0}.sidebar-view-shortcut{margin-left:auto;font-size:.7rem;background:#ffffff1a;padding:1px 6px;border-radius:3px;font-weight:500}.main-content{flex:1;margin-left:260px;min-height:100vh;display:flex;flex-direction:column}.page-header{padding:20px 32px 16px;border-bottom:1px solid var(--border);background:var(--bg-content);position:sticky;top:0;z-index:50}.page-header-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px}.page-title{font-size:1.5rem;font-weight:700;letter-spacing:-.02em}.page-subtitle{color:var(--text-secondary);font-size:.9rem}.page-actions{display:flex;gap:8px;align-items:center}.page-body{flex:1;padding:24px 32px}.bottom-tabs{display:none;position:fixed;bottom:0;left:0;right:0;background:var(--bg-content);border-top:1px solid var(--border);z-index:100;padding:4px 0;padding-bottom:env(safe-area-inset-bottom,4px)}.bottom-tabs-inner{display:flex;justify-content:space-around}.bottom-tab{display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 12px;color:var(--text-tertiary);font-size:.65rem;font-weight:500;transition:color var(--transition);cursor:pointer;border:none;background:none}.bottom-tab.active{color:var(--accent)}.bottom-tab svg{width:20px;height:20px}.sidebar-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:99}.mobile-header{display:none;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);background:var(--bg-content);position:sticky;top:0;z-index:50}.mobile-header h2{font-size:1.1rem}.hamburger-btn{padding:4px;color:var(--text-primary)}@media(max-width:768px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-overlay.visible{display:block}.main-content{margin-left:0;padding-bottom:64px}.bottom-tabs{display:block}.mobile-header{display:flex}.page-header{display:none}.page-body{padding:16px}}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius-md);font-weight:500;font-size:.875rem;transition:all var(--transition);white-space:nowrap}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--bg-surface);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover{background:var(--bg-hover)}.btn-ghost{color:var(--text-secondary);padding:6px 10px}.btn-ghost:hover{background:var(--bg-hover);color:var(--text-primary)}.btn-icon{padding:6px;border-radius:var(--radius-sm)}.btn-sm{padding:4px 10px;font-size:.8rem}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#dc2626}.card{background:var(--bg-content);border:1px solid var(--border);border-radius:var(--radius-lg);transition:box-shadow var(--transition),transform var(--transition)}.card:hover{box-shadow:var(--shadow-md)}.card-clickable:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg);cursor:pointer}.status-badge{display:inline-flex;align-items:center;gap:4px;padding:2px 10px;border-radius:999px;font-size:.75rem;font-weight:500}.status-badge.designing{background:var(--accent-light);color:var(--accent)}.status-badge.in_progress{background:var(--warning-light);color:#92400e}.status-badge.completed{background:var(--success-light);color:#065f46}.status-badge.not_started{background:var(--bg-surface);color:var(--text-secondary)}.status-badge.archived{background:var(--bg-surface);color:var(--text-tertiary)}.status-badge.overdue{background:var(--danger-light);color:var(--danger)}.progress-ring{position:relative;display:inline-flex;align-items:center;justify-content:center}.progress-ring-text{position:absolute;font-size:.7rem;font-weight:700;color:var(--text-primary)}.avatar{display:inline-flex;align-items:center;justify-content:center;border-radius:50%;font-weight:600;text-transform:uppercase;flex-shrink:0}.avatar-sm{width:24px;height:24px;font-size:.6rem}.avatar-md{width:32px;height:32px;font-size:.75rem}.avatar-stack{display:flex}.avatar-stack .avatar{border:2px solid var(--bg-content);margin-left:-8px}.avatar-stack .avatar:first-child{margin-left:0}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:200;padding:16px;animation:fadeIn .15s ease}.modal{background:var(--bg-content);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);width:100%;max-width:480px;max-height:85vh;overflow-y:auto}.modal-header{padding:20px 24px 0;display:flex;align-items:center;justify-content:space-between}.modal-header h3{font-size:1.125rem}.modal-body{padding:16px 24px}.modal-footer{padding:12px 24px 20px;display:flex;justify-content:flex-end;gap:8px}.form-group{margin-bottom:16px}.form-label{display:block;font-size:.85rem;font-weight:500;color:var(--text-secondary);margin-bottom:4px}.stats-bar{display:flex;gap:16px;margin-bottom:24px;flex-wrap:wrap}.stat-card{background:var(--bg-surface);border-radius:var(--radius-lg);padding:16px 20px;flex:1;min-width:140px}.stat-value{font-size:1.75rem;font-weight:700;letter-spacing:-.02em;line-height:1.2}.stat-label{font-size:.8rem;color:var(--text-secondary);font-weight:500}.project-card{padding:20px;display:flex;flex-direction:column;gap:12px}.project-card-header{display:flex;align-items:flex-start;justify-content:space-between}.project-card-title{font-size:1rem;font-weight:600;margin-bottom:4px}.project-card-objective{font-size:.85rem;color:var(--text-secondary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.project-card-stats{display:flex;align-items:center;gap:16px;font-size:.8rem;color:var(--text-secondary)}.project-card-stat{display:flex;align-items:center;gap:4px}.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}.task-row{display:flex;align-items:center;gap:12px;padding:10px 16px;border-radius:var(--radius-md);transition:background var(--transition)}.task-row:hover{background:var(--bg-hover)}.task-checkbox{width:18px;height:18px;border:2px solid var(--border);border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition);flex-shrink:0;background:none;padding:0}.task-checkbox:hover{border-color:var(--accent)}.task-checkbox.checked{background:var(--success);border-color:var(--success)}.task-checkbox.checked svg{color:#fff}.task-title{flex:1;font-size:.9rem;min-width:0}.task-title.completed{text-decoration:line-through;color:var(--text-tertiary)}.task-meta{display:flex;align-items:center;gap:8px;flex-shrink:0}.task-due{font-size:.75rem;padding:2px 8px;border-radius:999px;font-weight:500}.task-due.overdue{background:var(--danger-light);color:var(--danger)}.task-due.upcoming{background:var(--warning-light);color:#92400e}.task-due.normal{background:var(--bg-surface);color:var(--text-secondary)}.board-container{display:flex;gap:16px;overflow-x:auto;padding-bottom:16px;min-height:calc(100vh - 180px)}.board-column{min-width:300px;width:300px;flex-shrink:0;display:flex;flex-direction:column}.board-column-header{display:flex;align-items:center;justify-content:space-between;padding:8px 4px 12px}.board-column-title{font-size:.85rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.04em}.board-column-count{background:var(--bg-surface);color:var(--text-secondary);font-size:.75rem;font-weight:600;padding:1px 8px;border-radius:999px}.board-column-body{flex:1;background:var(--bg-surface);border-radius:var(--radius-lg);padding:8px;display:flex;flex-direction:column;gap:8px;min-height:200px}.board-column-body.drag-over{background:var(--accent-light);border:2px dashed var(--accent)}.task-card{background:var(--bg-content);border-radius:var(--radius-md);padding:12px;box-shadow:var(--shadow-sm);cursor:grab;transition:box-shadow var(--transition),transform var(--transition);border:1px solid var(--border-light)}.task-card:hover{box-shadow:var(--shadow-md)}.task-card.dragging{opacity:.5;transform:rotate(2deg)}.task-card-title{font-size:.9rem;font-weight:500;margin-bottom:8px}.task-card-footer{display:flex;align-items:center;justify-content:space-between}.task-card-tag{font-size:.7rem;padding:1px 8px;border-radius:999px;background:var(--accent-light);color:var(--accent);font-weight:500}.milestone-group{margin-bottom:24px}.milestone-header{display:flex;align-items:center;gap:8px;padding:8px 0;cursor:pointer;-webkit-user-select:none;user-select:none}.milestone-header:hover{color:var(--accent)}.milestone-chevron{transition:transform var(--transition)}.milestone-chevron.open{transform:rotate(90deg)}.milestone-title{font-weight:600;font-size:.95rem;flex:1}.milestone-progress{font-size:.8rem;color:var(--text-secondary)}.milestone-tasks{padding-left:4px}.inline-add{display:flex;align-items:center;gap:8px;padding:8px 16px;color:var(--text-tertiary);font-size:.85rem;cursor:pointer;transition:color var(--transition);border-radius:var(--radius-md)}.inline-add:hover{color:var(--accent);background:var(--accent-light)}.inline-add-input{flex:1;border:none;background:none;outline:none;font-size:.9rem;padding:0}.inline-add-input:focus{box-shadow:none}.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden}.calendar-header-cell{padding:10px;text-align:center;font-size:.75rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;background:var(--bg-surface);border-bottom:1px solid var(--border)}.calendar-cell{min-height:100px;padding:6px 8px;border-right:1px solid var(--border-light);border-bottom:1px solid var(--border-light);background:var(--bg-content);transition:background var(--transition)}.calendar-cell:hover{background:var(--bg-hover)}.calendar-cell.other-month{background:var(--bg-surface);color:var(--text-tertiary)}.calendar-cell.today{background:var(--accent-light)}.calendar-day-num{font-size:.8rem;font-weight:500;margin-bottom:4px}.calendar-task-pill{font-size:.7rem;padding:2px 6px;border-radius:4px;margin-bottom:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer}.calendar-task-pill.completed{background:var(--success-light);color:#065f46}.calendar-task-pill.pending{background:var(--warning-light);color:#92400e}.calendar-task-pill.overdue{background:var(--danger-light);color:var(--danger)}.calendar-nav{display:flex;align-items:center;gap:16px;margin-bottom:16px}.calendar-month-label{font-size:1.1rem;font-weight:600;min-width:180px;text-align:center}.timeline-container{overflow-x:auto;padding-bottom:16px}.timeline-header{display:flex;border-bottom:1px solid var(--border);position:sticky;top:0;background:var(--bg-content);z-index:10}.timeline-label-col{width:200px;min-width:200px;flex-shrink:0;padding:8px 12px;font-size:.8rem;font-weight:600;color:var(--text-secondary)}.timeline-dates{display:flex;flex:1}.timeline-date-col{min-width:40px;text-align:center;font-size:.65rem;color:var(--text-tertiary);padding:4px 0;border-left:1px solid var(--border-light)}.timeline-date-col.today{background:var(--accent-light);font-weight:600;color:var(--accent)}.timeline-row{display:flex;align-items:center;min-height:40px;border-bottom:1px solid var(--border-light)}.timeline-row.milestone-row{background:var(--bg-surface);font-weight:600}.timeline-row-label{width:200px;min-width:200px;flex-shrink:0;padding:8px 12px;font-size:.85rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.timeline-bar-area{flex:1;position:relative;height:100%;display:flex;align-items:center}.timeline-bar{position:absolute;height:20px;border-radius:10px;background:var(--accent-light);border:1px solid var(--accent)}.timeline-bar-fill{height:100%;border-radius:10px;background:var(--accent);transition:width .5s ease}.timeline-bar.task-bar{height:14px;border-radius:7px}.timeline-today-line{position:absolute;top:0;bottom:0;width:2px;background:var(--danger);z-index:5}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 20px;text-align:center}.empty-state-icon{width:64px;height:64px;border-radius:50%;background:var(--bg-surface);display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--text-tertiary)}.empty-state-title{font-size:1.1rem;font-weight:600;margin-bottom:4px}.empty-state-text{color:var(--text-secondary);font-size:.9rem;max-width:320px;margin-bottom:16px}.status-select{padding:2px 8px;font-size:.8rem;border-radius:999px;border:1px solid var(--border);background:var(--bg-content);cursor:pointer;font-weight:500}.sort-bar{display:flex;gap:8px;align-items:center;margin-bottom:16px;flex-wrap:wrap}.sort-btn{font-size:.8rem;padding:4px 12px;border-radius:999px;border:1px solid var(--border);background:var(--bg-content);color:var(--text-secondary);cursor:pointer;transition:all var(--transition)}.sort-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}@media(max-width:768px){.projects-grid{grid-template-columns:1fr}.stats-bar{gap:8px}.stat-card{min-width:100px;padding:12px}.stat-value{font-size:1.25rem}.board-container{flex-direction:column}.board-column{width:100%;min-width:unset}.calendar-cell{min-height:60px;padding:4px}.timeline-label-col,.timeline-row-label{width:120px;min-width:120px}}