.app-layout{min-height:100vh;display:flex;flex-direction:column}.app-body{display:flex;flex:1;padding-top:var(--navbar-height)}.navbar{position:fixed;top:0;left:0;right:0;height:var(--navbar-height);background:var(--color-surface);border-bottom:1px solid var(--color-border);display:flex;align-items:center;padding:0 var(--space-4);z-index:var(--z-sticky);gap:var(--space-4)}.navbar-left{display:flex;align-items:center;gap:var(--space-2)}.navbar-brand{display:flex;align-items:center;gap:var(--space-2);font-size:var(--text-md);color:var(--color-text-primary)}.navbar-brand:hover{color:var(--color-text-primary)}.navbar-center{flex:1;display:flex;justify-content:center;max-width:480px;margin:0 auto}.navbar-search{width:100%;position:relative}.navbar-search-input{width:100%;padding:6px 12px 6px 32px;font-size:var(--text-sm);background:var(--color-grey-100);border:1px solid transparent;border-radius:var(--radius-md);outline:none;transition:all var(--transition-fast);color:var(--color-text-primary)}.navbar-search-input:focus{background:var(--color-surface);border-color:var(--color-border);box-shadow:var(--shadow-sm)}.navbar-search-input::placeholder{color:var(--color-text-tertiary)}.search-icon{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:var(--color-text-tertiary);pointer-events:none}.search-results-dropdown{position:absolute;top:calc(100% + 4px);left:0;right:0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:var(--z-dropdown);max-height:400px;overflow-y:auto}.search-section{border-bottom:1px solid var(--color-border-light)}.search-section:last-child{border-bottom:none}.search-section-title{padding:8px 16px 4px;font-size:var(--text-xs);font-weight:var(--weight-semibold);color:var(--color-text-tertiary);text-transform:uppercase;letter-spacing:.05em}.search-result-item{display:flex;align-items:center;gap:10px;width:100%;padding:8px 16px;background:none;border:none;text-align:left;cursor:pointer;transition:background var(--transition-fast);color:var(--color-text-secondary)}.search-result-item:hover{background:var(--color-surface-hover)}.navbar-right{display:flex;align-items:center;gap:var(--space-2)}.theme-toggle{flex-shrink:0}.auth-theme-toggle{position:fixed;top:var(--space-4);right:var(--space-4);z-index:var(--z-sticky);background:var(--color-surface);border-color:var(--color-border);box-shadow:var(--shadow-sm)}.notif-badge{position:absolute;top:2px;right:2px;background:var(--color-error);color:var(--color-label-text);font-size:10px;font-weight:var(--weight-bold);min-width:16px;height:16px;border-radius:8px;display:flex;align-items:center;justify-content:center;padding:0 4px}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--color-surface);border-right:1px solid var(--color-border);height:calc(100vh - var(--navbar-height));position:sticky;top:var(--navbar-height);overflow-y:auto;transition:margin var(--transition-slow),opacity var(--transition-slow)}.sidebar:not(.sidebar-open){margin-left:calc(-1 * var(--sidebar-width));opacity:0;pointer-events:none}.sidebar-content{padding:var(--space-3) 0}.sidebar-section{margin-bottom:var(--space-2)}.sidebar-section-title{display:flex;align-items:center;gap:6px;padding:6px 16px;font-size:11px;font-weight:var(--weight-semibold);color:var(--color-text-tertiary);text-transform:uppercase;letter-spacing:.05em}.sidebar-item{display:flex;align-items:center;gap:8px;padding:6px 16px;font-size:var(--text-sm);color:var(--color-text-secondary);transition:all var(--transition-fast);cursor:pointer;text-decoration:none;border:none;background:none;width:100%;text-align:left}.sidebar-item:hover{background:var(--color-surface-hover);color:var(--color-text-primary)}.sidebar-item.active{background:var(--color-surface-active);color:var(--color-text-primary);font-weight:var(--weight-medium)}.sidebar-item-nested{padding-left:36px}.sidebar-board-list{margin-bottom:var(--space-1)}.board-color-dot{width:8px;height:8px;border-radius:2px;flex-shrink:0}.sidebar-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--color-overlay-muted);z-index:50}.app-main{flex:1;min-width:0;transition:margin var(--transition-slow)}.app-main.sidebar-collapsed{margin-left:0}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-bg);padding:var(--space-4)}.auth-card{width:100%;max-width:400px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-8)}.auth-header{text-align:center;margin-bottom:var(--space-8)}.auth-header h1{font-size:var(--text-2xl);margin-bottom:var(--space-2)}.auth-header p{color:var(--color-text-tertiary);font-size:var(--text-sm)}.auth-form{display:flex;flex-direction:column;gap:var(--space-4)}.auth-footer{text-align:center;margin-top:var(--space-6);font-size:var(--text-sm);color:var(--color-text-tertiary)}.auth-footer a{color:var(--color-text-primary);font-weight:var(--weight-medium)}.auth-footer a:hover{text-decoration:underline}.dashboard-page{padding:var(--space-6) var(--space-8);max-width:1200px}.dashboard-header{margin-bottom:var(--space-6)}.dashboard-header h1{font-size:var(--text-2xl)}.dashboard-header p{color:var(--color-text-tertiary);font-size:var(--text-sm);margin-top:var(--space-1)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:var(--space-4);margin-bottom:var(--space-8)}.stat-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--space-5)}.stat-card-label{font-size:var(--text-xs);font-weight:var(--weight-medium);color:var(--color-text-tertiary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--space-1)}.stat-card-value{font-family:var(--font-heading);font-size:var(--text-3xl);font-weight:var(--weight-bold);color:var(--color-text-primary)}.dashboard-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-6)}.dashboard-section{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden}.dashboard-section-header{padding:var(--space-4) var(--space-5);border-bottom:1px solid var(--color-border-light);font-weight:var(--weight-semibold);font-size:var(--text-sm)}.dashboard-section-body{padding:0;max-height:380px;overflow-y:auto}.dashboard-task-item{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-5);border-bottom:1px solid var(--color-border-light);transition:background var(--transition-fast);cursor:pointer}.dashboard-task-item:hover{background:var(--color-surface-hover)}.dashboard-task-item:last-child{border-bottom:none}.activity-item{display:flex;gap:var(--space-3);padding:var(--space-3) var(--space-5);border-bottom:1px solid var(--color-border-light);font-size:var(--text-sm)}.activity-item:last-child{border-bottom:none}.workspace-page{padding:var(--space-6) var(--space-8);max-width:1000px}.workspace-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-6)}.boards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:var(--space-4);margin-bottom:var(--space-8)}.board-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden;cursor:pointer;transition:all var(--transition-base)}.board-card:hover{box-shadow:var(--shadow-md);border-color:var(--color-grey-400)}.board-card-cover{height:80px;display:flex;align-items:center;justify-content:center}.board-card-body{padding:var(--space-3) var(--space-4)}.board-card-name{font-weight:var(--weight-semibold);font-size:var(--text-sm);margin-bottom:2px}.board-card-meta{font-size:var(--text-xs);color:var(--color-text-tertiary)}.new-board-card{background:var(--color-grey-50);border:1px dashed var(--color-border);display:flex;align-items:center;justify-content:center;min-height:120px;cursor:pointer;color:var(--color-text-tertiary);font-size:var(--text-sm);gap:var(--space-2);transition:all var(--transition-base)}.new-board-card:hover{border-color:var(--color-grey-400);color:var(--color-text-secondary);background:var(--color-grey-100)}.member-list{display:flex;flex-direction:column;gap:var(--space-1)}.member-item{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2) var(--space-3);border-radius:var(--radius-md)}.member-item:hover{background:var(--color-surface-hover)}.member-info{flex:1;min-width:0}.member-info-name{font-size:var(--text-sm);font-weight:var(--weight-medium)}.member-info-email{font-size:var(--text-xs);color:var(--color-text-tertiary)}.member-role{font-size:var(--text-xs);color:var(--color-text-tertiary);text-transform:capitalize;padding:2px 8px;background:var(--color-grey-100);border-radius:var(--radius-sm)}.board-page{height:calc(100vh - var(--navbar-height));display:flex;flex-direction:column;overflow:hidden}.board-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-3) var(--space-5);border-bottom:1px solid var(--color-border);background:var(--color-surface);min-height:48px;gap:var(--space-3)}.board-header-left{display:flex;align-items:center;gap:var(--space-3);min-width:0;flex:1}.board-title-input{font-family:var(--font-heading);font-size:var(--text-lg);font-weight:var(--weight-semibold);border:none;background:none;outline:none;padding:2px 4px;color:var(--color-text-primary);min-width:100px;max-width:300px;border-radius:var(--radius-sm)}.board-title-input:hover{background:var(--color-surface-hover)}.board-title-input:focus{background:var(--color-surface);box-shadow:0 0 0 2px var(--color-accent)}.board-header-right{display:flex;align-items:center;gap:var(--space-2)}.board-content{flex:1;overflow-x:auto;overflow-y:hidden;padding:var(--space-4) var(--space-4) var(--space-4)}.board-columns{display:flex;gap:var(--space-3);align-items:flex-start;height:100%;min-height:0}.column{width:var(--column-width);min-width:var(--column-width);background:var(--color-grey-50);border:1px solid var(--color-border-light);border-radius:var(--radius-md);display:flex;flex-direction:column;max-height:calc(100vh - var(--navbar-height) - 110px)}.column-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-3) var(--space-3);cursor:grab}.column-title{font-size:var(--text-sm);font-weight:var(--weight-semibold);color:var(--color-text-primary);display:flex;align-items:center;gap:var(--space-2);flex:1;min-width:0}.column-title input{font-size:var(--text-sm);font-weight:var(--weight-semibold);border:none;background:none;outline:none;width:100%;padding:1px 4px;color:var(--color-text-primary);border-radius:var(--radius-sm)}.column-title input:focus{background:var(--color-surface);box-shadow:0 0 0 2px var(--color-accent)}.column-count{font-size:var(--text-xs);color:var(--color-text-tertiary);background:var(--color-grey-200);padding:0 6px;border-radius:var(--radius-sm);font-weight:var(--weight-medium)}.column-body{flex:1;overflow-y:auto;padding:0 var(--space-2) var(--space-2);min-height:40px}.column-footer{padding:var(--space-2) var(--space-3)}.add-task-btn{display:flex;align-items:center;gap:var(--space-2);width:100%;padding:6px 8px;font-size:var(--text-sm);color:var(--color-text-tertiary);background:none;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.add-task-btn:hover{background:var(--color-grey-200);color:var(--color-text-primary)}.add-task-form{padding:0 var(--space-2) var(--space-2)}.add-task-input{width:100%;padding:8px 10px;font-size:var(--text-sm);border:1px solid var(--color-border);border-radius:var(--radius-md);outline:none;background:var(--color-surface);color:var(--color-text-primary);margin-bottom:var(--space-2)}.add-task-input:focus{border-color:var(--color-accent);box-shadow:0 0 0 1px var(--color-accent)}.add-task-actions{display:flex;gap:var(--space-2)}.task-card{background:var(--color-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-md);padding:var(--space-3);margin-bottom:var(--space-2);cursor:pointer;transition:box-shadow var(--transition-fast),border-color var(--transition-fast);-webkit-user-select:none;user-select:none}.task-card:hover{border-color:var(--color-grey-300);box-shadow:var(--shadow-sm)}.task-card-cover{width:calc(100% + calc(var(--space-3) * 2));margin:calc(-1 * var(--space-3));margin-bottom:var(--space-3);height:100px;object-fit:cover;border-radius:var(--radius-md) var(--radius-md) 0 0}.task-card-labels{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:var(--space-2)}.task-card-title{font-size:var(--text-sm);font-weight:var(--weight-medium);color:var(--color-text-primary);margin-bottom:var(--space-2);line-height:1.4;word-break:break-word}.task-card-meta{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2)}.task-card-badges{display:flex;align-items:center;gap:var(--space-2);flex-wrap:wrap}.task-card-badge{display:flex;align-items:center;gap:3px;font-size:11px;color:var(--color-text-tertiary)}.task-card-badge.overdue{color:var(--color-error)}.task-card-members{display:flex}.task-card-members .avatar{border:2px solid var(--color-surface);margin-left:-6px}.task-card-members .avatar:first-child{margin-left:0}.add-column{min-width:var(--column-width);width:var(--column-width)}.add-column-btn{display:flex;align-items:center;gap:var(--space-2);width:100%;padding:var(--space-3);color:var(--color-text-tertiary);background:var(--color-grey-100);border:1px dashed var(--color-border);border-radius:var(--radius-md);cursor:pointer;font-size:var(--text-sm);transition:all var(--transition-fast)}.add-column-btn:hover{background:var(--color-grey-200);color:var(--color-text-secondary);border-color:var(--color-grey-400)}.add-column-form{background:var(--color-grey-50);border:1px solid var(--color-border-light);border-radius:var(--radius-md);padding:var(--space-3)}.column-collapsed{width:40px;min-width:40px;cursor:pointer;display:flex;flex-direction:column;align-items:center;padding:var(--space-3) var(--space-1);background:var(--color-grey-100);border:1px solid var(--color-border-light);border-radius:var(--radius-md)}.column-collapsed-title{writing-mode:vertical-lr;text-orientation:mixed;font-size:var(--text-sm);font-weight:var(--weight-semibold);color:var(--color-text-secondary);margin-top:var(--space-2)}.task-modal{max-width:800px}.task-modal-body{display:flex;gap:var(--space-6);padding:var(--space-5)}.task-modal-main{flex:1;min-width:0}.task-modal-sidebar{width:200px;min-width:200px;display:flex;flex-direction:column;gap:var(--space-3)}.task-section{margin-bottom:var(--space-5)}.task-section-title{font-size:var(--text-xs);font-weight:var(--weight-semibold);color:var(--color-text-tertiary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--space-2)}.task-description-editor{width:100%;min-height:100px;padding:var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--text-sm);font-family:var(--font-body);resize:vertical;outline:none;color:var(--color-text-primary)}.task-description-editor:focus{border-color:var(--color-accent);box-shadow:0 0 0 1px var(--color-accent)}.task-description-preview{font-size:var(--text-sm);line-height:1.6;color:var(--color-text-secondary);cursor:pointer;padding:var(--space-2);border-radius:var(--radius-md);min-height:40px}.task-description-preview:hover{background:var(--color-surface-hover)}.task-description-preview p{margin-bottom:var(--space-2)}.task-description-preview code{background:var(--color-grey-100);padding:1px 4px;border-radius:2px;font-size:var(--text-xs)}.task-description-preview pre{background:var(--color-grey-100);padding:var(--space-3);border-radius:var(--radius-md);overflow-x:auto;margin-bottom:var(--space-2)}.task-description-preview ul,.task-description-preview ol{padding-left:var(--space-5);list-style:disc;margin-bottom:var(--space-2)}.task-description-preview ol{list-style:decimal}.sidebar-action{display:flex;align-items:center;gap:var(--space-2);width:100%;padding:6px 10px;font-size:var(--text-sm);color:var(--color-text-secondary);background:var(--color-grey-100);border:none;border-radius:var(--radius-md);cursor:pointer;transition:background var(--transition-fast);text-align:left}.sidebar-action:hover{background:var(--color-grey-200)}.checklist-item{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-1) 0}.checklist-item input[type=checkbox]{width:16px;height:16px;accent-color:var(--color-accent);cursor:pointer;flex-shrink:0}.checklist-item-text{flex:1;font-size:var(--text-sm);color:var(--color-text-primary)}.checklist-item-text.completed{text-decoration:line-through;color:var(--color-text-tertiary)}.checklist-item-actions{opacity:0;transition:opacity var(--transition-fast)}.checklist-item:hover .checklist-item-actions{opacity:1}.comment-item{display:flex;gap:var(--space-3);padding:var(--space-3) 0;border-bottom:1px solid var(--color-border-light)}.comment-item:last-child{border-bottom:none}.comment-content{flex:1;min-width:0}.comment-header{display:flex;align-items:center;gap:var(--space-2);margin-bottom:var(--space-1)}.comment-author{font-size:var(--text-sm);font-weight:var(--weight-medium)}.comment-time{font-size:var(--text-xs);color:var(--color-text-tertiary)}.comment-body{font-size:var(--text-sm);color:var(--color-text-secondary);line-height:1.5;word-break:break-word}.comment-actions{display:flex;gap:var(--space-2);margin-top:var(--space-1)}.comment-action-btn{font-size:var(--text-xs);color:var(--color-text-tertiary);background:none;border:none;cursor:pointer;padding:0}.comment-action-btn:hover{color:var(--color-text-primary);text-decoration:underline}.attachment-item{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2) var(--space-3);background:var(--color-grey-50);border:1px solid var(--color-border-light);border-radius:var(--radius-md);margin-bottom:var(--space-2)}.attachment-icon{width:40px;height:40px;background:var(--color-grey-200);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:var(--color-text-tertiary);flex-shrink:0;overflow:hidden}.attachment-icon img{width:100%;height:100%;object-fit:cover}.attachment-info{flex:1;min-width:0}.attachment-name{font-size:var(--text-sm);font-weight:var(--weight-medium);color:var(--color-text-primary)}.attachment-meta{font-size:var(--text-xs);color:var(--color-text-tertiary)}.activity-entry{display:flex;gap:var(--space-3);padding:var(--space-2) 0;font-size:var(--text-sm);color:var(--color-text-secondary)}.activity-entry-time{font-size:var(--text-xs);color:var(--color-text-tertiary);white-space:nowrap}.picker-panel{position:absolute;top:calc(100% + 4px);left:0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:var(--z-dropdown);padding:var(--space-3);min-width:240px;animation:fadeIn .1s ease}.color-palette{display:grid;grid-template-columns:repeat(6,1fr);gap:6px}.color-swatch{width:28px;height:28px;border-radius:var(--radius-sm);cursor:pointer;border:2px solid transparent;transition:all var(--transition-fast)}.color-swatch:hover{transform:scale(1.1)}.color-swatch.selected{border-color:var(--color-accent);box-shadow:0 0 0 2px var(--color-surface),0 0 0 4px var(--color-accent)}.profile-page{padding:var(--space-6) var(--space-8);max-width:600px}.profile-avatar-section{display:flex;align-items:center;gap:var(--space-5);margin-bottom:var(--space-8)}.filter-bar{display:flex;align-items:center;gap:var(--space-2);flex-wrap:wrap}.filter-chip{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;font-size:var(--text-xs);font-weight:var(--weight-medium);background:var(--color-grey-100);border:1px solid var(--color-border);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);color:var(--color-text-secondary)}.filter-chip:hover{background:var(--color-grey-200)}.filter-chip.active{background:var(--color-accent);color:var(--color-accent-contrast);border-color:var(--color-accent)}@media(max-width:768px){.sidebar{position:fixed;left:0;top:var(--navbar-height);z-index:51;width:260px;min-width:260px}.sidebar:not(.sidebar-open){margin-left:-260px}.dashboard-grid{grid-template-columns:1fr}.dashboard-page,.workspace-page,.profile-page{padding:var(--space-4)}.task-modal-body{flex-direction:column}.task-modal-sidebar{width:100%;min-width:unset;flex-direction:row;flex-wrap:wrap}.navbar-center{display:none}.board-header{padding:var(--space-2) var(--space-3)}}@media(max-width:480px){.stats-grid{grid-template-columns:1fr 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