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var(--btn-border);background:var(--btn-bg);color:var(--btn-color);cursor:pointer;transition:all .2s ease;will-change:transform}:where(.modal-action-btn):not(:disabled):hover,:where(.modal-action-btn):focus-visible{background:var(--btn-bg-hover);border-color:var(--btn-border-hover);color:var(--btn-color-hover);transform:translateY(-1px);box-shadow:0 4px 12px var(--btn-shadow-hover);outline:none}:where(.modal-action-btn).primary{position:relative;overflow:hidden;background:var(--gradient-brand-to-amethyst);color:#fff;border:none;z-index:0}:where(.modal-action-btn).primary:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--gradient-amethyst-to-brand);opacity:0;transition:opacity .3s ease;z-index:-1}:where(.modal-action-btn).primary:hover:before,:where(.modal-action-btn).primary:focus-visible:before{opacity:1}:where(.modal-action-btn).primary:hover,:where(.modal-action-btn).primary:focus-visible{box-shadow:0 4px 12px 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ease}.search-input:focus+.search-icon{color:var(--brand)}.chat-category{margin-bottom:28px}.category-header{font-size:1.2rem;font-weight:700;color:var(--brand);margin-bottom:16px;padding-bottom:10px;border-bottom:3px solid var(--brand);display:flex;align-items:center;gap:10px}.chat-list{display:flex;flex-direction:column;gap:10px}.chat-history-result{padding:16px;background:#f9fafb;border:2px solid var(--gray-200);border-radius:12px;cursor:pointer;transition:all .2s ease;position:relative;box-shadow:0 2px 4px #0000000d;display:flex;justify-content:space-between;align-items:flex-start}.chat-history-result:hover,.chat-history-result:focus-within{border-color:var(--brand);transform:translateY(-2px);box-shadow:0 8px 16px #0000001a;outline:none}.chat-history-result:has(.chat-info:focus-visible){background:var(--neutral-100);box-shadow:0 0 0 3px var(--focus-ring)}.chat-history-result:hover .chat-actions,.chat-history-result:focus-within .chat-actions{opacity:1}.chat-history-result.loading{opacity:.6;pointer-events:none;cursor:wait}.chat-history-result.loading:after{content:"";position:absolute;top:50%;right:12px;width:16px;height:16px;border:2px solid #f3f3f3;border-top:2px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite;transform:translateY(-50%)}.chat-info{flex:1;cursor:pointer;display:flex;flex-direction:column;gap:6px}.chat-title{font-size:1rem;font-weight:600;color:var(--gray-800);margin:0}.chat-description{font-size:.9rem;color:var(--gray-600);margin:0;line-height:1.4}.chat-meta{display:flex;justify-content:space-between;align-items:center;font-size:.8rem;color:var(--gray-600);margin-top:4px}.message-count{background:var(--brand);color:#fff;padding:2px 8px;border-radius:12px;font-size:.75rem;font-weight:500}.chat-date{font-style:italic;color:var(--gray-400)}.chat-actions{display:flex;gap:8px;opacity:0;transition:opacity .2s ease}.chat-history-results{max-height:500px;overflow-y:auto;padding-right:4px}.chat-history-results::-webkit-scrollbar{width:6px}.chat-history-results::-webkit-scrollbar-track{background:var(--neutral-100);border-radius:3px}.chat-history-results::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:3px}.chat-history-results::-webkit-scrollbar-thumb:hover{background:var(--gray-400)}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.preview-modal-content{display:flex;align-items:center;justify-content:center;min-height:400px;padding:0;overflow:auto}.preview-modal-image{max-width:100%;max-height:70vh;object-fit:contain;display:block;margin:0 auto}.preview-modal-error{padding:40px;text-align:center;color:var(--gray-600);font-size:18px}@media(max-width:768px){.preview-modal-content{min-height:300px}.preview-modal-image{max-height:60vh}.preview-modal-error{padding:30px 20px;font-size:16px}}