.spinner-container{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-sm)}.spinner{display:inline-block;border-style:solid;border-radius:50%;animation:spin .8s linear infinite}.spinner-md{width:24px;height:24px;border-width:3px}.spinner-lg{width:40px;height:40px;border-width:4px}.spinner-xl{width:64px;height:64px;border-width:5px}.spinner-primary{border-color:var(--primary);border-top-color:transparent}.spinner-secondary{border-color:var(--secondary);border-top-color:transparent}.spinner-white{border-color:#fff;border-top-color:transparent}.spinner-label{margin:0;font-size:14px;color:var(--text-secondary)}.spinner-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-md);border:none;border-radius:var(--radius-lg);font-family:inherit;font-weight:500;font-size:14px;line-height:1.4;cursor:pointer;transition:all .2s ease;white-space:nowrap;-webkit-user-select:none;user-select:none}.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:var(--on-primary)}.btn-primary:hover:not(:disabled){background:var(--primary-dark);box-shadow:var(--shadow-md)}.btn-primary:active:not(:disabled){background:var(--primary-dark);transform:scale(.98)}.btn-secondary{background:var(--secondary);color:var(--on-secondary)}.btn-secondary:hover:not(:disabled){background:var(--secondary-dark);box-shadow:var(--shadow-md)}.btn-tertiary{background:var(--tertiary);color:var(--on-primary)}.btn-tertiary:hover:not(:disabled){background:var(--warning);box-shadow:var(--shadow-md)}.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}.btn-outline:hover:not(:disabled){background:var(--primary);color:#fff}.btn-text{background:transparent;color:var(--primary);padding:var(--spacing-xs) var(--spacing-sm)}.btn-text:hover:not(:disabled){background:#1976d214}.btn-sm{padding:var(--spacing-xs) var(--spacing-sm);font-size:12px;border-radius:var(--radius-md)}.btn-md{padding:var(--spacing-sm) var(--spacing-md);font-size:14px}.btn-lg{padding:var(--spacing-md) var(--spacing-lg);font-size:16px}.btn-full-width{width:100%}.btn-loading{position:relative;color:transparent}.btn-spinner{position:absolute;inset:0;margin:auto;width:16px;height:16px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .6s linear infinite}.btn-primary .btn-spinner{border-color:var(--on-primary);border-right-color:transparent}.btn-secondary .btn-spinner{border-color:var(--on-secondary);border-right-color:transparent}.btn-tertiary .btn-spinner{border-color:var(--on-primary);border-right-color:transparent}.btn-icon{display:inline-flex;align-items:center;font-size:18px}.input-container{display:flex;flex-direction:column;gap:var(--spacing-xs);margin-bottom:0;padding:var(--spacing-xs)}.input-full-width{width:100%}.input-label{font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:4px}.input-required{color:var(--error);margin-left:2px}.input-wrapper{position:relative;display:flex;align-items:center}.input{width:100%;height:48px;padding:var(--spacing-sm) var(--spacing-md);border:2px solid var(--border);border-radius:var(--radius-md);font-family:inherit;font-size:14px;color:var(--text-primary);background:var(--bg-secondary);transition:all .2s ease}.input:hover{border-color:var(--primary-light)}.input:focus{outline:none;border-color:var(--primary);background:var(--bg-primary);box-shadow:0 0 0 3px #1976d21a}.input:disabled{background:var(--bg-tertiary);cursor:not-allowed;opacity:.6}@media(prefers-color-scheme:dark){.input{background-color:var(--bg-tertiary)}.input:focus{background-color:var(--bg-secondary)}}.input-with-icon{padding-left:calc(var(--spacing-md) + 24px + var(--spacing-md))}.input-icon{position:absolute;left:var(--spacing-md);top:50%;transform:translateY(-50%);display:inline-flex;align-items:center;justify-content:center;color:var(--text-tertiary);font-size:20px;width:24px;height:24px;pointer-events:none}.input-helper{font-size:13px;color:var(--text-tertiary);margin-top:6px;line-height:1.5}.input-helper-error{color:var(--error);font-weight:500;margin-top:6px}.input-error .input{border-color:var(--error)}.input-error .input:focus{border-color:var(--error);box-shadow:0 0 0 3px #d32f2f1a}.input-with-toggle{padding-right:calc(var(--spacing-md) + 32px)}.input-password-toggle{position:absolute;right:var(--spacing-sm);top:50%;transform:translateY(-50%);display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:transparent;color:var(--text-tertiary);font-size:18px;cursor:pointer;border-radius:var(--radius-sm);transition:all .2s ease}.input-password-toggle:hover{background:var(--bg-tertiary);color:var(--text-primary)}.input-password-toggle:focus{outline:none;box-shadow:0 0 0 2px #1976d233}textarea.input{min-height:120px;padding:14px 16px;resize:vertical;font-family:inherit;line-height:1.6}@media(prefers-color-scheme:dark){textarea.input{background-color:var(--bg-tertiary)}textarea.input:focus{background-color:var(--bg-secondary)}}.card{display:flex;flex-direction:column;border-radius:var(--radius-lg);background:var(--bg-primary);transition:all .2s ease}.card-elevated{box-shadow:var(--shadow-md)}.card-outlined{border:2px solid var(--border)}.card-filled{background:var(--bg-tertiary)}.card-padding-none{padding:0}.card-padding-sm{padding:var(--spacing-sm)}.card-padding-md{padding:var(--spacing-md)}.card-padding-lg{padding:var(--spacing-lg)}.card-hoverable{cursor:pointer}.card-hoverable:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.card-outlined.card-hoverable:hover{border-color:var(--primary)}.card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--spacing-md);padding-bottom:var(--spacing-md);border-bottom:1px solid var(--border)}.card-header-text{flex:1}.card-title{margin:0;font-size:18px;font-weight:600;color:var(--text-primary)}.card-subtitle{margin:var(--spacing-xs) 0 0;font-size:14px;color:var(--text-secondary)}.card-header-action{display:flex;align-items:center;gap:var(--spacing-xs)}.card-content{flex:1;padding-top:var(--spacing-md)}.card-footer{display:flex;align-items:center;justify-content:flex-end;gap:var(--spacing-sm);padding-top:var(--spacing-md);border-top:1px solid var(--border)}.badge{display:inline-flex;align-items:center;justify-content:center;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-xl);font-size:12px;font-weight:500;line-height:1;white-space:nowrap}.badge-sm{padding:2px var(--spacing-xs);font-size:10px;border-radius:var(--radius-md)}.badge-md{padding:var(--spacing-xs) var(--spacing-sm);font-size:12px}.badge-lg{padding:var(--spacing-sm) var(--spacing-md);font-size:14px}.badge-error{background:#ffcdd2;color:#c62828}.badge-neutral{background:var(--bg-tertiary);color:var(--text-secondary)}.badge-dot{padding:0;width:8px;height:8px;border-radius:50%}.badge-dot.badge-sm{width:6px;height:6px}.badge-dot.badge-lg{width:10px;height:10px}.modal-backdrop{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-md);animation:fadeIn .2s ease}.modal{background:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;max-height:90vh;animation:slideUp .3s ease}.modal-sm{width:100%;max-width:400px}.modal-md{width:100%;max-width:600px}.modal-lg{width:100%;max-width:800px}.modal-xl{width:100%;max-width:1200px}.modal-full{width:calc(100vw - var(--spacing-lg) * 2);height:calc(100vh - var(--spacing-lg) * 2);max-width:none;max-height:none}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-lg);border-bottom:1px solid var(--border)}.modal-title{margin:0;font-size:20px;font-weight:600;color:var(--text-primary)}.modal-close{display:flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;border:none;border-radius:var(--radius-md);background:transparent;color:var(--text-secondary);font-size:20px;cursor:pointer;transition:all .2s ease}.modal-close:hover{background:var(--bg-tertiary);color:var(--text-primary)}.modal-content{flex:1;padding:0;overflow-y:auto}.modal-footer{display:flex;align-items:center;justify-content:flex-end;gap:var(--spacing-sm);padding:var(--spacing-lg);border-top:1px solid var(--border)}@media(prefers-color-scheme:dark){.modal-backdrop{background:#000000b3}.modal{background:var(--bg-primary);box-shadow:0 20px 25px -5px #00000080,0 10px 10px -5px #0006}}@media(max-width:768px){.modal-backdrop{padding:0}.modal,.modal-sm,.modal-md,.modal-lg,.modal-xl{width:100%;max-width:100%;height:100vh;max-height:100vh;border-radius:0}}.toast-container{position:fixed;top:var(--spacing-lg);right:var(--spacing-lg);display:flex;flex-direction:column;gap:var(--spacing-sm);z-index:2000;max-width:400px}.toast{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-md);border-radius:var(--radius-lg);background:var(--bg-primary);box-shadow:var(--shadow-lg);animation:slideInRight .3s ease}@keyframes slideInRight{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.toast-icon{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;font-size:14px;font-weight:700;flex-shrink:0}.toast-message{flex:1;font-size:14px;color:var(--text-primary)}.toast-close{display:flex;align-items:center;justify-content:center;width:24px;height:24px;padding:0;border:none;border-radius:var(--radius-md);background:transparent;color:var(--text-secondary);font-size:16px;cursor:pointer;transition:all .2s ease;flex-shrink:0}.toast-close:hover{background:var(--bg-tertiary);color:var(--text-primary)}.toast-success{border-left:4px solid var(--success)}.toast-success .toast-icon{background:#c8e6c9;color:#2e7d32}.toast-info{border-left:4px solid var(--info)}.toast-info .toast-icon{background:#bbdefb;color:#1565c0}.toast-warning{border-left:4px solid var(--warning)}.toast-warning .toast-icon{background:#ffe0b2;color:#e65100}.toast-error{border-left:4px solid var(--error)}.toast-error .toast-icon{background:#ffcdd2;color:#c62828}@media(max-width:768px){.toast-container{left:var(--spacing-sm);right:var(--spacing-sm);max-width:none}}.checkbox-wrapper{display:inline-flex;align-items:flex-start;position:relative;cursor:pointer;-webkit-user-select:none;user-select:none}.checkbox-wrapper.checkbox-disabled{cursor:not-allowed;opacity:.5}.checkbox-input{position:absolute;opacity:0;width:0;height:0;pointer-events:none}.checkbox-label{display:flex;align-items:center;gap:var(--spacing-2);cursor:pointer;font-size:.9375rem;color:var(--color-gray-900)}.dark .checkbox-label{color:var(--color-gray-100)}.checkbox-wrapper.checkbox-disabled .checkbox-label{cursor:not-allowed}.checkbox-box{display:flex;align-items:center;justify-content:center;width:20px;height:20px;border:2px solid var(--color-gray-400);border-radius:var(--border-radius-sm);background-color:var(--color-white);transition:all .2s ease;flex-shrink:0}.dark .checkbox-box{border-color:var(--color-gray-600);background-color:var(--color-gray-800)}.checkbox-wrapper:hover .checkbox-box{border-color:var(--color-primary)}.checkbox-input:focus+.checkbox-label .checkbox-box{outline:2px solid var(--color-primary);outline-offset:2px}.checkbox-input:checked+.checkbox-label .checkbox-box{background-color:var(--color-primary);border-color:var(--color-primary);color:var(--color-white)}.checkbox-input:indeterminate+.checkbox-label .checkbox-box{background-color:var(--color-primary);border-color:var(--color-primary);color:var(--color-white)}.checkbox-wrapper.checkbox-disabled .checkbox-box{background-color:var(--color-gray-100);border-color:var(--color-gray-300)}.dark .checkbox-wrapper.checkbox-disabled .checkbox-box{background-color:var(--color-gray-700);border-color:var(--color-gray-600)}.checkbox-icon{width:14px;height:14px}.checkbox-text{line-height:1.5}@media(max-width:768px){.checkbox-label{font-size:.875rem}.checkbox-box{width:18px;height:18px}.checkbox-icon{width:12px;height:12px}}.error-boundary{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:var(--spacing-4);background-color:var(--color-gray-50)}.dark .error-boundary{background-color:var(--color-gray-900)}.error-boundary-card{max-width:600px;width:100%;text-align:center;padding:var(--spacing-8)}.error-boundary-icon{font-size:4rem;margin-bottom:var(--spacing-4)}.error-boundary-title{font-size:1.75rem;font-weight:600;color:var(--color-gray-900);margin:0 0 var(--spacing-3) 0}.dark .error-boundary-title{color:var(--color-gray-100)}.error-boundary-message{font-size:1rem;color:var(--color-gray-600);margin:0 0 var(--spacing-6) 0;line-height:1.6}.dark .error-boundary-message{color:var(--color-gray-400)}.error-boundary-details{margin:var(--spacing-6) 0;text-align:left;border:1px solid var(--color-gray-200);border-radius:var(--border-radius-md);background-color:var(--color-gray-100);padding:var(--spacing-4)}.dark .error-boundary-details{border-color:var(--color-gray-700);background-color:var(--color-gray-800)}.error-boundary-summary{font-weight:600;color:var(--color-gray-900);cursor:pointer;-webkit-user-select:none;user-select:none;margin-bottom:var(--spacing-2)}.dark .error-boundary-summary{color:var(--color-gray-100)}.error-boundary-summary:hover{color:var(--color-primary)}.error-boundary-stack{margin-top:var(--spacing-3)}.error-boundary-stack strong{display:block;color:var(--color-gray-900);margin-top:var(--spacing-3);margin-bottom:var(--spacing-1)}.dark .error-boundary-stack strong{color:var(--color-gray-100)}.error-boundary-stack pre{font-size:.875rem;color:var(--color-gray-700);background-color:var(--color-white);padding:var(--spacing-3);border-radius:var(--border-radius-sm);overflow-x:auto;margin:0;white-space:pre-wrap;word-wrap:break-word}.dark .error-boundary-stack pre{color:var(--color-gray-300);background-color:var(--color-gray-900)}.error-boundary-actions{display:flex;gap:var(--spacing-3);justify-content:center;flex-wrap:wrap}@media(max-width:768px){.error-boundary-card{padding:var(--spacing-6) var(--spacing-4)}.error-boundary-icon{font-size:3rem}.error-boundary-title{font-size:1.5rem}.error-boundary-message{font-size:.9375rem}.error-boundary-actions{flex-direction:column}.error-boundary-actions button{width:100%}}@media(max-width:480px){.error-boundary{padding:var(--spacing-3)}.error-boundary-card{padding:var(--spacing-4)}.error-boundary-icon{font-size:2.5rem}.error-boundary-title{font-size:1.25rem}.error-boundary-details{padding:var(--spacing-3)}.error-boundary-stack pre{font-size:.75rem;padding:var(--spacing-2)}}.select-wrapper{display:flex;flex-direction:column;gap:var(--spacing-1)}.select-label{font-size:.875rem;font-weight:500;color:var(--color-gray-900)}.dark .select-label{color:var(--color-gray-100)}.select-container{position:relative;display:flex;align-items:center}.select-input{width:100%;padding:var(--spacing-2) var(--spacing-10) var(--spacing-2) var(--spacing-3);font-size:.9375rem;color:var(--color-gray-900);background-color:var(--color-white);border:1px solid var(--color-gray-300);border-radius:var(--border-radius-md);outline:none;cursor:pointer;appearance:none;transition:all .2s ease}.dark .select-input{color:var(--color-gray-100);background-color:var(--color-gray-800);border-color:var(--color-gray-600)}.select-input:hover:not(:disabled){border-color:var(--color-primary)}.select-input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(var(--color-primary-rgb),.1)}.select-input:disabled{background-color:var(--color-gray-100);cursor:not-allowed;opacity:.6}.dark .select-input:disabled{background-color:var(--color-gray-700)}.select-arrow{position:absolute;right:var(--spacing-3);pointer-events:none;color:var(--color-gray-600);transition:transform .2s ease}.dark .select-arrow{color:var(--color-gray-400)}.select-input:focus+.select-arrow{color:var(--color-primary);transform:rotate(180deg)}.select-error .select-input{border-color:var(--color-danger)}.select-error .select-input:focus{box-shadow:0 0 0 3px rgba(var(--color-danger-rgb),.1)}.select-error-text{font-size:.8125rem;color:var(--color-danger);margin-top:var(--spacing-1)}@media(max-width:768px){.select-input{padding:var(--spacing-2);padding-right:var(--spacing-8);font-size:.875rem}.select-label{font-size:.8125rem}.select-error-text{font-size:.75rem}}.confirm-dialog-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:9999;animation:fadeIn .2s ease-out}.confirm-dialog{background:var(--card-bg, #ffffff);border-radius:12px;box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;max-width:440px;width:90%;max-height:90vh;overflow:hidden;animation:slideUp .2s ease-out}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.confirm-dialog-header{display:flex;align-items:center;justify-content:space-between;padding:1.5rem 1.5rem 0;margin-bottom:.5rem}.confirm-dialog-title{font-size:1.25rem;font-weight:600;color:var(--text-primary, #111827);margin:0}.confirm-dialog-close{background:none;border:none;padding:.5rem;cursor:pointer;color:var(--text-tertiary, #9ca3af);display:flex;align-items:center;justify-content:center;border-radius:6px;transition:all .2s ease}.confirm-dialog-close:hover{background-color:var(--hover-bg, #f3f4f6);color:var(--text-secondary, #4b5563)}.confirm-dialog-content{padding:0 1.5rem 1.5rem}.confirm-dialog-message{font-size:.9375rem;color:var(--text-secondary, #4b5563);line-height:1.6;margin:0}.confirm-dialog-footer{display:flex;gap:.75rem;padding:1rem 1.5rem 1.5rem;border-top:1px solid var(--border, #e5e7eb);justify-content:flex-end}.confirm-dialog-footer button{min-width:80px}.button-danger{background-color:#dc2626;border-color:#dc2626}.button-danger:hover:not(:disabled){background-color:#b91c1c;border-color:#b91c1c}.button-danger:active:not(:disabled){background-color:#991b1b;border-color:#991b1b}@media(prefers-color-scheme:dark){.confirm-dialog{background:var(--card-bg-dark, #1f2937)}.confirm-dialog-title{color:var(--text-primary-dark, #f9fafb)}.confirm-dialog-message{color:var(--text-secondary-dark, #d1d5db)}.confirm-dialog-close{color:var(--text-tertiary-dark, #9ca3af)}.confirm-dialog-close:hover{background-color:var(--hover-bg-dark, #374151);color:var(--text-secondary-dark, #d1d5db)}.confirm-dialog-footer{border-top-color:var(--border-dark, #374151)}}.skeleton{background-color:var(--color-gray-200);border-radius:var(--border-radius-md);display:inline-block;position:relative;overflow:hidden}.skeleton:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,var(--color-gray-100),transparent);animation:skeleton-wave 1.5s ease-in-out infinite}.dark .skeleton{background-color:var(--color-gray-700)}.dark .skeleton:after{background:linear-gradient(90deg,transparent,var(--color-gray-600),transparent)}.skeleton-text{border-radius:var(--border-radius-sm);height:1em}.skeleton-circular{border-radius:50%}.skeleton-rectangular{border-radius:var(--border-radius-md)}.skeleton-pulse{animation:skeleton-pulse 1.5s ease-in-out infinite}.skeleton-wave:after{animation:skeleton-wave 1.5s ease-in-out infinite}.skeleton-none{animation:none}.skeleton-none:after{display:none}@keyframes skeleton-pulse{0%,to{opacity:1}50%{opacity:.6}}@keyframes skeleton-wave{0%{transform:translate(-100%)}to{transform:translate(100%)}}.conversation-list-skeleton{display:flex;flex-direction:column;gap:var(--spacing-2);padding:var(--spacing-4)}.conversation-skeleton-item{border-radius:var(--border-radius-lg);overflow:hidden}.message-list-skeleton{display:flex;flex-direction:column;gap:var(--spacing-4);padding:var(--spacing-4)}.message-skeleton-item{display:flex;gap:var(--spacing-3);align-items:flex-start}.message-skeleton-item.user{flex-direction:row-reverse}.message-skeleton-item.assistant .message-skeleton-content{align-items:flex-start}.message-skeleton-item.user .message-skeleton-content{align-items:flex-end}.message-skeleton-avatar{flex-shrink:0}.message-skeleton-content{flex:1;display:flex;flex-direction:column;gap:var(--spacing-2)}.instruction-list-skeleton{display:flex;flex-direction:column;gap:var(--spacing-4);padding:var(--spacing-4)}.instruction-skeleton-item{display:flex;flex-direction:column;gap:var(--spacing-3);padding:var(--spacing-4);border:1px solid var(--color-gray-200);border-radius:var(--border-radius-lg);background:var(--color-white)}.dark .instruction-skeleton-item{border-color:var(--color-gray-700);background:var(--color-gray-800)}.instruction-skeleton-header{display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-3)}.instruction-skeleton-footer{display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-3);margin-top:var(--spacing-2)}.instruction-skeleton-actions{display:flex;gap:var(--spacing-2)}.comment-list-skeleton{display:flex;flex-direction:column;gap:var(--spacing-3);padding:var(--spacing-3)}.comment-skeleton-item{display:flex;flex-direction:column;gap:var(--spacing-2);padding:var(--spacing-3);border-radius:var(--border-radius-md);background:var(--color-gray-50)}.dark .comment-skeleton-item{background:var(--color-gray-700)}.comment-skeleton-header{display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-2)}.document-list-skeleton{display:flex;flex-direction:column;gap:var(--spacing-2);padding:var(--spacing-4)}.document-skeleton-item{display:flex;align-items:center;gap:var(--spacing-3);padding:var(--spacing-3);border:1px solid var(--color-gray-200);border-radius:var(--border-radius-md);background:var(--color-white)}.dark .document-skeleton-item{border-color:var(--color-gray-700);background:var(--color-gray-800)}.document-skeleton-icon{flex-shrink:0}.document-skeleton-info{flex:1;display:flex;flex-direction:column;gap:var(--spacing-1)}.tags-list-skeleton{display:flex;flex-wrap:wrap;gap:var(--spacing-2);padding:var(--spacing-3)}.tag-skeleton{border-radius:var(--border-radius-full)}@media(max-width:768px){.conversation-list-skeleton,.message-list-skeleton,.instruction-list-skeleton,.document-list-skeleton{padding:var(--spacing-2)}.message-skeleton-item{gap:var(--spacing-2)}.instruction-skeleton-item,.document-skeleton-item{padding:var(--spacing-3)}}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:var(--spacing-8) var(--spacing-6);min-height:400px}.empty-state-compact{min-height:200px;padding:var(--spacing-6) var(--spacing-4)}.empty-state-icon{font-size:4rem;margin-bottom:var(--spacing-4);opacity:.8}.empty-state-title{font-size:1.5rem;font-weight:600;color:var(--color-gray-900);margin:0 0 var(--spacing-2) 0}.dark .empty-state-title{color:var(--color-gray-100)}.empty-state-description{font-size:1rem;color:var(--color-gray-600);margin:0 0 var(--spacing-6) 0;max-width:500px;line-height:1.6}.dark .empty-state-description{color:var(--color-gray-400)}.empty-state-error .empty-state-icon{color:var(--color-danger)}.empty-state-offline .empty-state-icon{color:var(--color-warning)}@media(max-width:768px){.empty-state{padding:var(--spacing-6) var(--spacing-4);min-height:300px}.empty-state-compact{min-height:150px;padding:var(--spacing-4) var(--spacing-3)}.empty-state-icon{font-size:3rem;margin-bottom:var(--spacing-3)}.empty-state-title{font-size:1.25rem}.empty-state-description{font-size:.875rem;margin-bottom:var(--spacing-4)}}@media(max-width:480px){.empty-state{padding:var(--spacing-4) 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ease}.header-user-button:hover{border-color:var(--primary);box-shadow:var(--shadow-sm)}.header-user-avatar{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;font-weight:600;font-size:16px}.header-user-info{display:flex;flex-direction:column;align-items:flex-start;gap:4px}.header-user-name{font-size:14px;font-weight:500;color:var(--text-primary);line-height:1}.header-user-chevron{font-size:10px;color:var(--text-tertiary);margin-left:var(--spacing-xs)}.header-user-menu{position:absolute;top:calc(100% + var(--spacing-xs));right:0;min-width:240px;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);animation:slideDown .2s 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ease}.auth-link:hover{color:var(--primary-dark);text-decoration:underline}.password-input-wrapper{position:relative;width:100%}.password-input-wrapper .input{padding-right:32px}.password-toggle{position:absolute;right:50px;top:calc(50% + 25px);transform:translateY(-50%);background:none;border:none;color:var(--text-tertiary);cursor:pointer;display:flex;align-items:center;justify-content:center;padding:6px;transition:color .2s ease}.password-toggle svg{width:19px;height:19px}.password-toggle:hover:not(:disabled){color:var(--primary)}.password-toggle:disabled{cursor:not-allowed;opacity:.5}.auth-form .input-label{font-size:16px;margin-top:16px;margin-left:16px;margin-bottom:16px}.auth-form .input{padding:10px}.auth-form .input-with-icon{padding-left:10px}.auth-form .input-icon{left:-10px}.auth-form .input-icon svg{width:30px;height:30px}.auth-form-options{display:flex;justify-content:space-between;align-items:center;font-size:14px}.remember-me-label{display:flex;align-items:center;gap:8px;cursor:pointer;color:var(--text-secondary);-webkit-user-select:none;user-select:none}.remember-me-label input[type=checkbox]{width:18px;height:18px;cursor:pointer;accent-color:var(--primary)}.remember-me-label:hover{color:var(--text-primary)}.forgot-password-link{font-size:14px}.login-mode-selector{display:flex;gap:8px;margin-bottom:var(--spacing-lg);padding:4px;background-color:#0003;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-md)}.mode-tab{flex:1;padding:12px 20px;background:none;border:none;border-radius:var(--radius-sm);font-size:15px;font-weight:600;color:#ffffff80;cursor:pointer;transition:all .2s ease;position:relative}.mode-tab:hover:not(:disabled){color:#fffc;background-color:#ffffff0d}.mode-tab.active{background-color:var(--primary);color:#fff;box-shadow:0 2px 8px #1976d266}.mode-tab.active:hover:not(:disabled){background-color:var(--primary-dark, #1565c0);color:#fff;box-shadow:0 2px 10px #1976d280}.mode-tab:disabled{cursor:not-allowed;opacity:.5}@media(prefers-color-scheme:light){.login-mode-selector{background-color:var(--bg-secondary);border:1px solid var(--border)}.mode-tab{color:var(--text-secondary)}.mode-tab:hover:not(:disabled){color:var(--text-primary);background-color:#0000000d}.mode-tab.active{background-color:var(--primary);color:#fff;box-shadow:0 2px 4px #1976d24d}.mode-tab.active:hover:not(:disabled){background-color:var(--primary-dark, #1565c0);color:#fff;box-shadow:0 2px 6px #1976d266}}.trial-help-text{margin-top:-8px;margin-bottom:0;padding:8px 12px;background-color:var(--bg-secondary);border-radius:var(--radius-sm);font-size:13px;color:var(--text-secondary);line-height:1.5}.password-info-box{margin-top:0;padding:16px;background-color:#1976d214;border:1px solid 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solid rgba(211,47,47,.3);border-radius:var(--radius-md);animation:slideDown .3s ease-out}.error-icon{font-size:32px;line-height:1}.error-content h3{margin:0 0 8px;color:#d32f2f;font-size:16px;font-weight:600}.error-content p{margin:4px 0;font-size:14px;color:var(--text-primary);line-height:1.5}.error-note{margin-top:8px!important;font-size:13px!important;color:var(--text-secondary)!important}.error-actions{display:flex;gap:12px;margin-top:16px}.error-action-button{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border-radius:var(--radius-md);font-size:14px;font-weight:600;text-decoration:none;transition:all .2s ease;cursor:pointer}.error-action-button.primary{background-color:var(--primary);color:#fff;border:2px solid var(--primary)}.error-action-button.primary:hover{background-color:var(--primary-dark);border-color:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px 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16px;margin-bottom:20px;background-color:#d32f2f1a;border:1px solid var(--error);border-radius:var(--radius-md);color:var(--error);font-size:14px;font-weight:500;text-align:center}.password-requirements{padding:16px;background-color:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-md);margin-top:-8px}.requirements-title{margin:0 0 12px;font-size:14px;font-weight:600;color:var(--text-primary)}.requirements-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}.requirements-list li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);transition:color .2s ease}.requirements-list li.valid{color:var(--success);font-weight:500}.requirements-list li svg{flex-shrink:0;color:var(--success)}.social-auth-section{display:flex;flex-direction:column;gap:12px;margin-bottom:var(--spacing-lg)}.social-auth-button{display:flex;align-items:center;justify-content:center;gap:12px;width:100%;padding:14px 20px;border:none;border-radius:var(--radius-md);font-size:15px;font-weight:600;cursor:pointer;transition:all .2s ease}.social-auth-button:disabled{opacity:.6;cursor:not-allowed}.social-auth-button.azure{background-color:#0078d4;color:#fff}.social-auth-button.azure:hover:not(:disabled){background-color:#106ebe;transform:translateY(-1px);box-shadow:0 4px 12px #0078d44d}.social-auth-button.apple{background-color:#000;color:#fff}.social-auth-button.apple:hover:not(:disabled){background-color:#1a1a1a;transform:translateY(-1px);box-shadow:0 4px 12px #0000004d}.auth-divider{display:flex;align-items:center;gap:16px;margin:8px 0}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background-color:var(--border)}.auth-divider span{font-size:13px;color:var(--text-tertiary);white-space:nowrap}.auth-divider-toggle{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:12px 16px;margin:8px 0;background:none;border:1px solid var(--border);border-radius:var(--radius-md);font-size:13px;color:var(--text-secondary);cursor:pointer;transition:all .2s ease}.auth-divider-toggle:hover:not(:disabled){color:var(--text-primary);border-color:var(--primary);background-color:#1976d20d}.auth-divider-toggle:disabled{cursor:not-allowed;opacity:.5}.auth-divider-toggle .chevron-icon{transition:transform .3s ease}.auth-divider-toggle .chevron-icon.rotated{transform:rotate(180deg)}.email-form-section{display:flex;flex-direction:column;gap:var(--spacing-md);overflow:hidden;transition:max-height .3s ease,opacity .3s ease,padding .3s ease}.email-form-section.collapsed{max-height:0;opacity:0;padding:0;pointer-events:none}.email-form-section.expanded{max-height:500px;opacity:1;padding-top:var(--spacing-sm)}@media(max-width:768px){.auth-container{padding:var(--spacing-md)}.auth-card{padding:var(--spacing-lg)!important}.auth-logo{font-size:48px}.auth-title{font-size:24px}}.comment-card{padding:var(--spacing-md);border-left:3px solid var(--border);background:var(--bg-secondary);border-radius:var(--radius-md);transition:all .2s ease}.comment-card:hover{border-left-color:var(--primary);box-shadow:var(--shadow-sm)}.comment-card-deleting{opacity:.5;pointer-events:none}.comment-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:var(--spacing-sm)}.comment-author{display:flex;align-items:center;gap:var(--spacing-sm)}.comment-author-avatar{width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px;flex-shrink:0}.comment-author-info{display:flex;flex-direction:column;gap:2px}.comment-author-name{font-size:14px;font-weight:600;color:var(--text-primary)}.comment-timestamp{font-size:12px;color:var(--text-tertiary)}.comment-actions{display:flex;gap:var(--spacing-xs);opacity:1;transition:opacity .2s ease}.comment-action-btn{background:none;border:none;padding:var(--spacing-xs);cursor:pointer;font-size:14px;font-weight:500;color:var(--text-primary);border-radius:var(--radius-sm);transition:all .2s ease}.comment-action-btn:hover{background:var(--bg-tertiary);transform:scale(1.1)}.comment-action-btn:active{transform:scale(.95)}.comment-action-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.comment-action-delete{color:#dc2626}.comment-action-delete:hover{background:#dc26261a;color:#dc2626}.comment-text{font-size:14px;color:var(--text-primary);line-height:1.5;white-space:pre-wrap;word-break:break-word}.comment-edit-form{display:flex;flex-direction:column;gap:var(--spacing-sm)}.comment-edit-input{width:100%;padding:var(--spacing-sm);border:2px solid var(--border);border-radius:var(--radius-md);font-family:inherit;font-size:14px;color:var(--text-primary);background:var(--bg-primary);resize:vertical;min-height:60px;transition:border-color .2s ease}.comment-edit-input:focus{outline:none;border-color:var(--primary)}.comment-edit-actions{display:flex;gap:var(--spacing-sm);justify-content:flex-end}@media(max-width:768px){.comment-card{padding:var(--spacing-sm)}.comment-author-avatar{width:28px;height:28px;font-size:12px}.comment-author-name{font-size:13px}.comment-timestamp{font-size:11px}.comment-text{font-size:13px}.comment-actions{opacity:1}.comment-action-btn{font-size:14px;padding:4px}}.add-comment{display:flex;flex-direction:column;gap:var(--spacing-sm);padding:var(--spacing-md);background:var(--bg-secondary);border-radius:var(--radius-md);border:2px solid var(--border);transition:border-color .2s ease}.add-comment:focus-within{border-color:var(--primary)}.add-comment-input{width:100%;padding:var(--spacing-sm);border:none;border-radius:var(--radius-sm);font-family:inherit;font-size:14px;color:var(--text-primary);background:var(--bg-primary);resize:vertical;min-height:50px;transition:all .2s ease}.add-comment-input:focus{outline:none}.add-comment-input:disabled{opacity:.6;cursor:not-allowed}.add-comment-input::placeholder{color:var(--text-tertiary)}.add-comment-actions{display:flex;justify-content:flex-end}@media(max-width:768px){.add-comment{padding:var(--spacing-sm)}.add-comment-input{font-size:13px;min-height:40px}}.comment-section-toggle{display:none}.comment-section-toggle:hover:not(:disabled){background:var(--bg-tertiary);color:var(--text-primary)}.comment-section-toggle:disabled{opacity:.5;cursor:not-allowed}.comment-section-icon{font-size:18px}.comment-section-count{flex:1;text-align:left}.comment-section-arrow{font-size:12px;transition:transform .2s 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