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60px)}.panel--archive.panel--mobile-sheet{z-index:var(--z-sheet-archive)}.panel--tools.panel--mobile-sheet{z-index:var(--z-sheet-tools)}.panel--sheet-partial{transform:translateY(calc(100% - var(--sheet-partial-height)))}.panel--sheet-expanded{transform:translateY(0)}@media (min-width: 768px){.panel--archive,.panel--tools{display:flex}.panel--archive{grid-area:archive;border-right:1px solid var(--studio-border);min-width:0}.panel--tools{grid-area:tools;border-left:1px solid var(--studio-border);min-width:0}.panel--archive.panel--mobile-sheet,.panel--tools.panel--mobile-sheet{display:flex;position:relative;left:auto;right:auto;bottom:auto;width:auto;border:none;border-radius:0;box-shadow:none;transform:none;transition:width var(--panel-transition-duration) ease,opacity var(--panel-transition-duration) ease;max-height:none}.panel--archive.panel--mobile-sheet{border-right:1px solid var(--studio-border)}.panel--tools.panel--mobile-sheet{border-left:1px solid 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var(--radius-md) var(--radius-md) 0}.panel-toggle--tools{right:0;border-right:none;border-radius:var(--radius-md) 0 0 var(--radius-md)}.panel-toggle:hover{background:var(--studio-hover);color:var(--studio-text)}.panel-toggle:focus-visible{outline:2px solid var(--studio-accent);outline-offset:2px}.studio-layout:not(.studio-layout--archive-collapsed):not(.studio-layout--both-collapsed) .panel-toggle--archive,.studio-layout:not(.studio-layout--tools-collapsed):not(.studio-layout--both-collapsed) .panel-toggle--tools{display:none}}.panel__sheet-handle{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-sm);cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none;flex-shrink:0}.panel__sheet-handle:active{cursor:grabbing}.panel__sheet-handle-bar{width:36px;height:4px;background:var(--studio-text-tertiary);border-radius:var(--radius-full);margin-bottom:var(--space-xs)}.panel__sheet-handle-title{font-size:.75rem;font-weight:600;color:var(--studio-text-secondary);text-transform:uppercase;letter-spacing:.05em}@media (min-width: 768px){.panel__sheet-handle{display:none}}.panel-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:var(--overlay-medium);z-index:var(--z-sheet-overlay);opacity:0;pointer-events:none;transition:opacity var(--sheet-transition-duration) ease-out}.panel-backdrop--visible{opacity:1;pointer-events:auto}@media (min-width: 768px){.panel-backdrop{display:none}}@media (prefers-reduced-motion: reduce){.panel,.panel--archive.panel--mobile-sheet,.panel--tools.panel--mobile-sheet,.panel-backdrop{transition:none}}.panel[data-focused=true]{outline:2px solid var(--studio-accent);outline-offset:-2px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.panel__loading{display:flex;align-items:center;justify-content:center;padding:var(--space-xl);color:var(--studio-text-tertiary)}.panel__loading-spinner{width:24px;height:24px;border:2px solid var(--studio-border);border-top-color:var(--studio-accent);border-radius:50%;animation:spin .8s linear 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0;padding:var(--space-md);opacity:1;transition:opacity 1.2s ease-in-out}.welcome-screen__quote--fading{opacity:0}.welcome-screen__quote-text{font-size:.9375rem;font-style:italic;line-height:1.6;color:var(--studio-text-secondary);margin-bottom:var(--space-sm)}.welcome-screen__quote-attribution{display:block;font-size:.8125rem;color:var(--studio-text-tertiary);font-style:normal}.welcome-screen__keyword{transition:all .5s ease-out}.welcome-screen__keyword--italic{font-style:italic}.welcome-screen__keyword--italic-bold{font-style:italic;font-weight:600}.welcome-screen__keyword--bold-underline{font-weight:600;text-decoration:underline;text-underline-offset:3px}.welcome-screen__instruction{margin-bottom:var(--space-lg)}.welcome-screen__instruction p{font-size:1rem;color:var(--studio-text-secondary)}.welcome-screen__hint{font-size:.875rem;color:var(--studio-text-tertiary);margin-top:var(--space-xs)}.welcome-screen__nav-hint{font-size:.75rem;color:var(--studio-text-tertiary);margin-top:var(--space-xl)}@media (max-width: 480px){.welcome-screen__hero{font-size:clamp(1.25rem,5vw,1.75rem)}.welcome-screen__quote{padding:var(--space-sm)}.welcome-screen__divider{width:60px}}.archive-pane{display:flex;flex-direction:column;height:100%;min-height:0;overflow:hidden}.archive-pane .panel__content{overflow-y:hidden;display:flex;flex-direction:column}.archive-search{display:flex;flex-direction:column;flex:1;min-height:0;overflow:hidden}.archive-search-input{display:flex;align-items:center;gap:var(--space-xs);padding:var(--space-sm) var(--space-md);background:var(--studio-surface);border-bottom:1px solid var(--studio-border)}.archive-search-input__field{flex:1;display:flex;align-items:center;gap:var(--space-xs);padding:var(--space-xs) 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var(--studio-border);overflow-x:auto;overflow-y:hidden;flex-shrink:0;scrollbar-width:thin;scrollbar-color:var(--studio-border) transparent}.archive-browser__source-pill{display:inline-flex;align-items:center;gap:var(--space-xs);padding:var(--space-xs) var(--space-sm);font-size:.75rem;font-weight:500;background:transparent;border:1px solid var(--studio-border);border-radius:var(--radius-full);color:var(--studio-text-secondary);cursor:pointer;transition:all .1s ease;min-height:var(--touch-target-min, 44px);white-space:nowrap;flex-shrink:0}.archive-browser__source-pill:hover{background:var(--studio-hover);border-color:var(--studio-text-tertiary)}.archive-browser__source-pill--active{background:var(--studio-accent);border-color:var(--studio-accent);color:var(--studio-accent-text, var(--studio-bg))}.archive-browser__source-icon{flex-shrink:0}.archive-browser__source-count{font-size:.6875rem;opacity:.7}.archive-browser__date-range{display:flex;align-items:center;gap:var(--space-xs);padding:var(--space-xs) var(--space-md);border-bottom:1px solid var(--studio-border);flex-shrink:0}.archive-browser__date-input{flex:1;padding:var(--space-xs) var(--space-sm);font-size:.75rem;background:var(--studio-bg);border:1px solid var(--studio-border);border-radius:var(--radius-sm);color:var(--studio-text);color-scheme:light}[data-theme=dark] .archive-browser__date-input{color-scheme:dark}.archive-browser__date-input:focus{border-color:var(--studio-accent);outline:none;box-shadow:0 0 0 2px rgba(var(--studio-accent-rgb),.2)}.archive-browser__date-sep{color:var(--studio-text-tertiary);font-size:.75rem;flex-shrink:0}.archive-browser__date-clear{padding:var(--space-xs);background:transparent;border:none;color:var(--studio-text-tertiary);cursor:pointer;border-radius:var(--radius-sm);font-size:.75rem}.archive-browser__date-clear:hover{color:var(--studio-text);background:var(--studio-hover)}.archive-browser__list-header{padding:var(--space-xs) var(--space-md);font-size:.75rem;color:var(--studio-text-tertiary);border-bottom:1px solid var(--studio-border)}.archive-browser__thread-list{flex:1;min-height:0;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--studio-border) transparent}.archive-browser__thread-card{display:flex;flex-direction:column;gap:var(--space-xs);width:100%;padding:var(--space-sm) var(--space-md);background:transparent;border:none;border-bottom:1px solid var(--studio-border);cursor:pointer;text-align:left;transition:background .1s ease;color:inherit;font:inherit}.archive-browser__thread-card:hover{background:var(--studio-hover)}.archive-browser__thread-card:focus-visible{outline:2px solid var(--studio-accent);outline-offset:-2px}.archive-browser__card-header{display:flex;align-items:flex-start;gap:var(--space-sm)}.archive-browser__card-title{font-size:.8125rem;font-weight:600;color:var(--studio-text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}.archive-browser__card-meta{display:flex;align-items:center;flex-wrap:wrap;gap:var(--space-xs);font-size:.75rem;color:var(--studio-text-tertiary)}.archive-browser__card-source{display:inline-flex;align-items:center;gap:2px}.archive-browser__meta-sep{color:var(--studio-text-tertiary)}.archive-browser__card-preview{font-size:.75rem;color:var(--studio-text-secondary);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.archive-browser__sentinel{min-height:40px}.archive-browser__nav-header{display:flex;align-items:center;padding:var(--space-sm) var(--space-md);border-bottom:1px solid var(--studio-border)}.archive-browser__error{display:flex;align-items:center;justify-content:space-between;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);background-color:var(--color-error-bg, rgba(239, 68, 68, .1));color:var(--color-error, #dc2626);font-size:.85rem;border-bottom:1px solid var(--color-error, #dc2626)}.archive-browser__error-dismiss{background:none;border:none;color:inherit;cursor:pointer;padding:var(--space-xs);font-size:.85rem;line-height:1;min-height:var(--touch-target-min, 44px);min-width:var(--touch-target-min, 44px);display:flex;align-items:center;justify-content:center}.archive-browser__back{display:inline-flex;align-items:center;gap:var(--space-xs);padding:var(--space-xs) var(--space-sm);font-size:.8125rem;font-weight:500;background:transparent;border:none;color:var(--studio-accent);cursor:pointer;border-radius:var(--radius-sm);min-height:var(--touch-target-min, 44px)}.archive-browser__back:hover{background:var(--studio-hover)}.archive-browser__message-nav{display:flex;flex-direction:column;flex:1;min-height:0;overflow-y:auto;padding:var(--space-md);gap:var(--space-sm)}.archive-browser__message-controls{display:flex;align-items:center;justify-content:center;gap:var(--space-xs)}.archive-browser__nav-btn{display:flex;align-items:center;justify-content:center;min-width:var(--touch-target-min, 44px);min-height:var(--touch-target-min, 44px);padding:var(--space-xs);background:transparent;border:1px solid var(--studio-border);border-radius:var(--radius-sm);color:var(--studio-text);cursor:pointer;font-size:.875rem;transition:all .1s ease}.archive-browser__nav-btn:hover:not(:disabled){background:var(--studio-hover);border-color:var(--studio-text-tertiary)}.archive-browser__nav-btn:disabled{opacity:.3;cursor:default}.archive-browser__message-pos{font-size:.8125rem;font-weight:500;color:var(--studio-text-secondary);padding:0 var(--space-sm);white-space:nowrap;font-variant-numeric:tabular-nums}.archive-browser__thread-title{font-size:.875rem;font-weight:600;color:var(--studio-text);text-align:center}.archive-browser__message-meta{display:flex;align-items:center;justify-content:center;gap:var(--space-xs);font-size:.75rem;color:var(--studio-text-tertiary)}.archive-browser__message-role{font-weight:600;text-transform:capitalize}.archive-browser__message-divider{height:1px;background:var(--studio-border)}.archive-browser__message-text{font-size:.8125rem;color:var(--studio-text);line-height:1.6;white-space:pre-wrap;word-break:break-word;flex:1;min-height:0;overflow-y:auto}.archive-browser__message-actions{display:flex;gap:var(--space-sm)}.archive-browser__action-btn{flex:1;padding:var(--space-sm);font-size:.8125rem;font-weight:500;background:var(--studio-accent);border:none;border-radius:var(--radius-md);color:var(--studio-accent-text, var(--studio-bg));cursor:pointer;min-height:var(--touch-target-min, 44px);transition:opacity .1s ease}.archive-browser__action-btn:hover{opacity:.9}.archive-browser__action-btn--secondary{background:transparent;border:1px solid var(--studio-border);color:var(--studio-text-secondary)}.archive-browser__action-btn--secondary:hover{background:var(--studio-hover);opacity:1}.archive-tree{padding:var(--space-sm)}.archive-tree__node{display:flex;flex-direction:column}.archive-tree__item{display:flex;align-items:center;gap:var(--space-xs);padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-sm);cursor:pointer;min-height:var(--touch-target-min);transition:background .1s ease}.archive-tree__item:hover{background:var(--studio-hover)}.archive-tree__item:focus-visible{outline:2px solid var(--studio-accent);outline-offset:-2px}.archive-tree__item--selected{background:rgba(var(--studio-accent-rgb),.1)}.archive-tree__item--level-0{padding-left:var(--space-sm)}.archive-tree__item--level-1{padding-left:calc(var(--space-sm) + 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ease}.archive-tree__expand:hover{color:var(--studio-text);background:var(--studio-hover)}.archive-tree__expand--expanded{transform:rotate(90deg)}.archive-tree__icon{color:var(--studio-text-tertiary);flex-shrink:0}.archive-tree__icon--conversation{color:var(--color-info)}.archive-tree__icon--message{color:var(--studio-text-secondary)}.archive-tree__icon--media{color:var(--color-warning)}.archive-tree__label{flex:1;font-size:.8125rem;color:var(--studio-text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.archive-tree__meta{font-size:.75rem;color:var(--studio-text-tertiary)}.archive-tree__badges{display:flex;gap:4px;flex-shrink:0}.media-badge{display:inline-flex;align-items:center;justify-content:center;min-width:16px;height:16px;padding:0 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monospace);font-size:.8125rem;color:var(--studio-text-secondary);background:var(--studio-bg);padding:var(--space-sm);border-radius:var(--radius-sm);white-space:pre-wrap;overflow-x:auto;max-height:120px;overflow-y:auto}.settings-preferences__group{display:flex;flex-direction:column;gap:var(--space-sm)}.settings-preferences__item{display:flex;align-items:center;justify-content:space-between;padding:var(--space-sm) 0}.settings-preferences__item-info{display:flex;flex-direction:column;gap:2px}.settings-preferences__item-label{font-size:.875rem;font-weight:500;color:var(--studio-text)}.settings-preferences__item-description{font-size:.8125rem;color:var(--studio-text-secondary)}.settings-toggle{position:relative;width:44px;height:24px}.settings-toggle input{opacity:0;width:0;height:0}.settings-toggle__slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:var(--studio-border);transition:.2s;border-radius:var(--radius-full)}.settings-toggle__slider:before{position:absolute;content:"";height:18px;width:18px;left:3px;bottom:3px;background-color:var(--bg-toggle-knob);transition:.2s;border-radius:50%}.settings-toggle input:checked+.settings-toggle__slider{background-color:var(--studio-accent)}.settings-toggle input:checked+.settings-toggle__slider:before{transform:translate(20px)}.settings-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-xl);text-align:center}.settings-empty__icon{font-size:2.5rem;margin-bottom:var(--space-md);opacity:.5}.settings-empty__title{font-size:1rem;font-weight:600;color:var(--studio-text);margin:0 0 var(--space-xs) 0}.settings-empty__description{font-size:.875rem;color:var(--studio-text-secondary);margin:0;max-width:300px}.settings-loading{display:flex;align-items:center;justify-content:center;padding:var(--space-xl)}.settings-loading__spinner{width:32px;height:32px;border:3px solid var(--studio-border);border-top-color:var(--studio-accent);border-radius:50%;animation:settings-spin .8s linear infinite}@keyframes settings-spin{to{transform:rotate(360deg)}}@media (min-width: 769px){.settings-section{padding:var(--space-lg)}.settings-section__title{font-size:1.5rem}.settings-card__content{padding:var(--space-lg)}.settings-danger-item{flex-direction:row;align-items:center;gap:var(--space-md)}.settings-keys__item{flex-direction:row;align-items:center}.settings-keys__item-actions{width:auto;justify-content:flex-start}.settings-form__actions{flex-direction:row}.settings-form__actions .btn{width:auto}.settings-usage__grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}}