:root{--bg-primary:#1a1b2e;--bg-secondary:#1e1f36;--bg-tertiary:#252742;--bg-card:#2a2c4a;--bg-hover:#32345a;--bg-input:#1e1f36;--border-color:#3a3c5e;--border-light:#2e3050;--text-primary:#e8e9f0;--text-secondary:#9da1b4;--text-muted:#6b6f8a;--accent:#7c5cfc;--accent-hover:#6a4ce0;--accent-light:rgba(124,92,252,.15);--success:#22c55e;--warning:#eab308;--danger:#ef4444;--info:#06b6d4;--sidebar-w:270px;--radius:8px;--radius-lg:12px;--shadow:0 4px 12px rgba(0,0,0,.4);--transition:.2s cubic-bezier(.4,0,.2,1)}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Segoe UI',-apple-system,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none;transition:var(--transition)}a:hover{color:var(--accent-hover)}
.app-layout{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-w);background:var(--bg-secondary);border-right:1px solid var(--border-color);height:100vh;position:fixed;top:0;left:0;overflow-y:auto;z-index:100;display:flex;flex-direction:column}
.sidebar-header{padding:16px 20px;border-bottom:1px solid var(--border-color);display:flex;align-items:center;gap:10px}
.sidebar-logo{font-size:20px;font-weight:700;color:var(--text-primary)}.sidebar-logo span{color:var(--accent)}
.sidebar-nav{flex:1;padding:12px 0;overflow-y:auto}
.nav-section{padding:0 12px;margin-bottom:8px}
.nav-section-title{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;color:var(--text-muted);padding:8px 8px 4px}
.nav-item{display:flex;align-items:center;gap:10px;padding:7px 12px;border-radius:6px;color:var(--text-secondary);font-size:14px;transition:var(--transition);cursor:pointer}
.nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}.nav-item.active{background:var(--accent-light);color:var(--accent)}
.nav-icon{font-size:16px;width:22px;text-align:center;flex-shrink:0}
.nav-badge{margin-left:auto;background:var(--bg-tertiary);color:var(--text-muted);font-size:11px;padding:1px 7px;border-radius:10px}
.nav-tree{padding-left:16px}.nav-tree .nav-item{font-size:13px;padding:5px 12px}
.nav-color-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.sidebar-footer{padding:12px 16px;border-top:1px solid var(--border-color);display:flex;align-items:center;gap:10px}
.user-avatar{width:32px;height:32px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;color:#fff;font-size:13px;font-weight:600}
.user-info{flex:1}.user-name{font-size:13px;font-weight:600}.user-role{font-size:11px;color:var(--text-muted)}
.main-content{margin-left:var(--sidebar-w);flex:1;min-height:100vh}
.page-header{padding:20px 32px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}
.breadcrumb{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted);margin-bottom:12px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-secondary)}.breadcrumb a:hover{color:var(--accent)}.breadcrumb .sep{color:var(--text-muted)}
.page-title-row{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.page-title{font-size:24px;font-weight:700;letter-spacing:-.5px;display:flex;align-items:center;gap:12px}
.page-title .emoji{font-size:28px}
.page-actions{display:flex;gap:8px;flex-wrap:wrap}
.page-body{padding:24px 32px}
.card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:20px;transition:var(--transition)}
.card:hover{border-color:var(--accent);box-shadow:var(--shadow)}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.card-title{font-size:16px;font-weight:600;display:flex;align-items:center;gap:8px}
.card-meta{font-size:13px;color:var(--text-secondary);margin-top:8px}
.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-bottom:24px}
.stat-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:16px 20px}
.stat-label{font-size:12px;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}
.stat-value{font-size:28px;font-weight:700;margin-top:4px;letter-spacing:-1px}
.stat-value.text-success{color:var(--success)}.stat-value.text-warning{color:var(--warning)}.stat-value.text-danger{color:var(--danger)}.stat-value.text-info{color:var(--info)}
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;font-size:13px;font-weight:500;border-radius:6px;border:1px solid transparent;cursor:pointer;transition:var(--transition);font-family:inherit;text-decoration:none;white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover);color:#fff}
.btn-secondary{background:var(--bg-tertiary);color:var(--text-secondary);border-color:var(--border-color)}.btn-secondary:hover{background:var(--bg-hover);color:var(--text-primary)}
.btn-danger{background:rgba(239,68,68,.15);color:var(--danger);border-color:rgba(239,68,68,.3)}.btn-danger:hover{background:rgba(239,68,68,.25)}
.btn-sm{padding:5px 10px;font-size:12px}
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:13px;font-weight:500;color:var(--text-secondary);margin-bottom:6px}
.form-input{width:100%;padding:10px 14px;background:var(--bg-input);border:1px solid var(--border-color);border-radius:6px;color:var(--text-primary);font-size:14px;font-family:inherit;transition:var(--transition)}
.form-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.form-input::placeholder{color:var(--text-muted)}
select.form-input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239da1b4' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}
.form-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:24px;max-width:600px}
.form-actions{display:flex;gap:8px;margin-top:20px}
.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;font-size:11px;font-weight:600;border-radius:20px;text-transform:uppercase;letter-spacing:.3px}
.badge-slate{background:rgba(100,116,139,.2);color:#94a3b8}.badge-blue{background:rgba(59,130,246,.2);color:#60a5fa}
.badge-orange{background:rgba(249,115,22,.2);color:#fb923c}.badge-green{background:rgba(34,197,94,.2);color:#4ade80}
.badge-gray{background:rgba(107,114,128,.2);color:#9ca3af}.badge-red{background:rgba(239,68,68,.2);color:#f87171}
.badge-violet{background:rgba(139,92,246,.2);color:#a78bfa}.badge-cyan{background:rgba(6,182,212,.2);color:#22d3ee}
.task-table{width:100%;border-collapse:collapse}
.task-table th{text-align:left;padding:8px 12px;font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border-color)}
.task-table td{padding:10px 12px;border-bottom:1px solid var(--border-light);font-size:14px}
.task-table tr:hover td{background:var(--bg-hover)}
.task-title-cell a{color:var(--text-primary);font-weight:500}.task-title-cell a:hover{color:var(--accent)}
.mini-avatar{width:24px;height:24px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;color:#fff;font-size:10px;font-weight:600;flex-shrink:0}
.overdue{color:var(--danger)!important;font-weight:600}
.tag{display:inline-block;padding:2px 8px;font-size:11px;border-radius:4px;background:var(--bg-tertiary);color:var(--text-secondary);margin-right:4px}
.board-view{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.board-column{background:var(--bg-secondary);border-radius:var(--radius-lg);padding:12px;min-height:200px}
.board-column-header{display:flex;align-items:center;justify-content:space-between;padding:8px 4px;margin-bottom:8px}
.board-column-title{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.3px}
.board-column-count{background:var(--bg-tertiary);color:var(--text-muted);font-size:11px;padding:2px 8px;border-radius:10px}
.board-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);padding:12px;margin-bottom:8px;transition:var(--transition);display:block;color:var(--text-primary);text-decoration:none}
.board-card:hover{border-color:var(--accent);transform:translateY(-1px);color:var(--text-primary)}
.board-card-title{font-size:13px;font-weight:500;margin-bottom:8px}.board-card-meta{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--text-muted)}
.progress-bar{height:4px;background:var(--bg-tertiary);border-radius:2px;overflow:hidden;margin-top:8px}
.progress-fill{height:100%;border-radius:2px;transition:width .5s ease}.progress-fill.green{background:var(--success)}
.quick-add{display:flex;gap:8px;margin-bottom:20px}
.view-toggle{display:flex;gap:2px;background:var(--bg-tertiary);border-radius:6px;padding:2px}
.view-toggle a{padding:5px 12px;font-size:12px;font-weight:500;color:var(--text-muted);border-radius:4px;transition:var(--transition)}
.view-toggle a.active,.view-toggle a:hover{background:var(--bg-card);color:var(--text-primary)}
.task-detail-grid{display:grid;grid-template-columns:1fr 300px;gap:24px}
.detail-section{margin-bottom:24px}
.detail-section-title{font-size:13px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:12px;padding-bottom:8px;border-bottom:1px solid var(--border-light)}
.detail-row{display:flex;align-items:center;padding:8px 0;gap:12px}
.detail-label{font-size:13px;color:var(--text-muted);width:120px;flex-shrink:0}
.detail-value{font-size:14px}
.comment-item{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--border-light)}
.comment-body{flex:1}.comment-header{display:flex;align-items:center;gap:8px;margin-bottom:4px}
.comment-author{font-size:13px;font-weight:600}.comment-time{font-size:11px;color:var(--text-muted)}
.comment-text{font-size:14px;color:var(--text-secondary);line-height:1.5}
.attachment-list{display:flex;flex-direction:column;gap:8px}
.attachment-item{display:flex;align-items:center;gap:10px;padding:10px 14px;background:var(--bg-tertiary);border:1px solid var(--border-light);border-radius:6px}
.attachment-item:hover{border-color:var(--accent)}.attachment-icon{font-size:24px}.attachment-info{flex:1}
.attachment-name{font-size:13px;font-weight:500}.attachment-meta{font-size:11px;color:var(--text-muted)}
.attachment-actions{display:flex;gap:4px}
.messages{padding:12px 32px;list-style:none}
.message{padding:10px 16px;border-radius:6px;font-size:13px;margin-bottom:8px}
.message.success{background:rgba(34,197,94,.15);color:#4ade80;border:1px solid rgba(34,197,94,.3)}
.message.error{background:rgba(239,68,68,.15);color:#f87171;border:1px solid rgba(239,68,68,.3)}
.empty-state{text-align:center;padding:48px 20px;color:var(--text-muted)}
.empty-state-icon{font-size:48px;margin-bottom:16px}.empty-state-title{font-size:18px;font-weight:600;color:var(--text-secondary);margin-bottom:8px}.empty-state-text{font-size:14px;margin-bottom:20px}
.delete-warning{background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.3);border-radius:var(--radius);padding:20px;margin-bottom:20px;text-align:center}
.auth-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg-primary)}
.auth-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:40px;width:100%;max-width:420px;box-shadow:var(--shadow)}
.auth-title{font-size:24px;font-weight:700;text-align:center;margin-bottom:8px}
.auth-subtitle{font-size:14px;color:var(--text-secondary);text-align:center;margin-bottom:24px}
.auth-link{text-align:center;margin-top:16px;font-size:13px;color:var(--text-secondary)}
.drag-handle{cursor:grab;color:var(--text-muted);padding:0 4px;user-select:none}.drag-handle:active{cursor:grabbing}
.sortable-ghost{opacity:.4;background:var(--accent-light)!important}
.toast{position:fixed;bottom:20px;right:20px;padding:12px 20px;border-radius:var(--radius);font-size:13px;font-weight:500;color:#fff;z-index:9999;opacity:0;transform:translateY(10px);transition:all .3s}.toast.show{opacity:1;transform:translateY(0)}.toast-success{background:#059669}.toast-info{background:#0284c7}
.notif-item{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;border-bottom:1px solid var(--border-light);transition:var(--transition);text-decoration:none;color:inherit}
.notif-item:hover{background:var(--bg-hover)}.notif-item.unread{background:var(--accent-light);border-left:3px solid var(--accent)}
.notif-body{flex:1}.notif-title{font-size:13px;font-weight:500;margin-bottom:2px}.notif-message{font-size:12px;color:var(--text-secondary)}.notif-time{font-size:11px;color:var(--text-muted);margin-top:4px}
.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden}
.cal-header{padding:10px;text-align:center;font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);background:var(--bg-secondary);border-bottom:1px solid var(--border-color)}
.cal-day{min-height:100px;padding:6px 8px;border-right:1px solid var(--border-light);border-bottom:1px solid var(--border-light);background:var(--bg-card)}.cal-day:hover{background:var(--bg-hover)}.cal-day:nth-child(7n){border-right:none}
.cal-other{opacity:.35}.cal-today{background:var(--accent-light)!important}.cal-today .cal-date{color:var(--accent);font-weight:700}
.cal-date{font-size:13px;font-weight:500;margin-bottom:4px;color:var(--text-secondary)}
.cal-task{display:flex;align-items:center;gap:4px;padding:3px 6px;margin-bottom:3px;border-radius:4px;font-size:11px;color:var(--text-primary);text-decoration:none;background:var(--bg-tertiary)}.cal-task:hover{background:var(--bg-hover);color:var(--accent)}
.gantt-container{border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow-x:auto}
.gantt-header,.gantt-row{display:flex;border-bottom:1px solid var(--border-light)}
.gantt-header{background:var(--bg-secondary);font-weight:600}
.gantt-label-col{width:250px;min-width:250px;padding:10px 14px;border-right:1px solid var(--border-color);font-size:13px;display:flex;flex-direction:column;justify-content:center}
.gantt-timeline-col{flex:1;position:relative;min-height:48px;min-width:500px}
.gantt-month{position:absolute;top:0;padding:10px 8px;font-size:11px;color:var(--text-muted);font-weight:600;text-transform:uppercase;white-space:nowrap}
.gantt-bar{position:absolute;top:50%;transform:translateY(-50%);height:24px;border-radius:4px;display:flex;align-items:center;padding:0 8px;min-width:8px;opacity:.85}.gantt-bar:hover{opacity:1}
.gantt-bar-label{font-size:10px;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:500}
.gantt-today{position:absolute;top:0;bottom:0;width:2px;background:var(--danger);z-index:5;pointer-events:none}
.gantt-task-name{color:var(--text-primary);text-decoration:none;font-size:13px;font-weight:500}.gantt-task-name:hover{color:var(--accent)}
.gantt-task-meta{display:flex;align-items:center;gap:6px;margin-top:4px}
.gantt-row:hover{background:var(--bg-hover)}
.text-muted{color:var(--text-muted)}.text-sm{font-size:13px}.text-xs{font-size:11px}
.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mb-2{margin-bottom:16px}
.flex{display:flex}.items-center{align-items:center}.gap-2{gap:8px}.gap-3{gap:12px}
::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}
@media(max-width:768px){.sidebar{transform:translateX(-100%)}.main-content{margin-left:0}.page-header,.page-body{padding:16px}.task-detail-grid{grid-template-columns:1fr}.board-view{grid-template-columns:1fr}.stats-row{grid-template-columns:repeat(2,1fr)}}