:root{--bg-app: #f8f9fa;--bg-header: #ffffff;--bg-chat: #f1f3f5;--bg-card: #ffffff;--border-color: #dee2e6;--border-color-light: #e9ecef;--text-primary: #212529;--text-secondary: #495057;--text-muted: #868e96;--color-accent: #0b7285;--color-accent-hover: #0c8599;--color-accent-light: #e3fafc;--bubble-user-bg: #334155;--bubble-user-text: #ffffff;--bubble-bot-bg: #ffffff;--bubble-bot-text: #212529;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .05), 0 2px 4px -1px rgba(0, 0, 0, .03);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .05), 0 4px 6px -2px rgba(0, 0, 0, .02);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 16px;--radius-pill: 9999px;--transition-fast: .15s ease;--transition-normal: .25s ease}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-app);color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow:hidden}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ced4da;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#adb5bd}.app-container{display:flex;flex-direction:column;height:100vh;width:100vw;background-color:var(--bg-app);position:relative}.case-header{background-color:var(--bg-header);border-bottom:1px solid var(--border-color);padding:10px 24px;display:flex;align-items:center;justify-content:flex-start;font-size:.75rem;font-weight:500;color:var(--text-muted);-webkit-user-select:none;user-select:none}.case-header-item{display:flex;align-items:center}.case-header-divider{margin:0 16px;color:var(--border-color);font-weight:300}.main-layout{display:flex;flex:1;overflow:hidden;position:relative}.sidebar-mock{width:240px;background-color:#fff;border-right:1px solid var(--border-color);display:flex;flex-direction:column;padding:20px;gap:20px}@media (max-width: 768px){.sidebar-mock{display:none}}.sidebar-section-title{font-size:.65rem;text-transform:uppercase;letter-spacing:.05em;font-weight:700;color:var(--text-muted)}.sidebar-doc-list{display:flex;flex-direction:column;gap:8px;margin-top:8px}.sidebar-doc-item{display:flex;align-items:center;gap:8px;font-size:.8rem;color:var(--text-secondary);padding:8px 10px;border-radius:var(--radius-sm);background-color:var(--bg-app);border:1px solid var(--border-color-light);cursor:pointer;transition:all var(--transition-fast)}.sidebar-doc-item:hover{background-color:var(--color-accent-light);border-color:var(--color-accent);color:var(--color-accent)}.sidebar-doc-icon{color:var(--text-muted)}.chat-container{display:flex;flex-direction:column;flex:1;height:100%;background-color:var(--bg-app);overflow:hidden}.chat-area{flex:1;overflow-y:auto;padding:32px 24px;display:flex;flex-direction:column;gap:24px}.chat-inner{max-width:800px;width:100%;margin:0 auto;display:flex;flex-direction:column;gap:24px;flex:1;min-height:100%}.starting-state{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;max-width:680px;width:100%;margin:auto;padding:40px 20px;animation:fadeIn var(--transition-normal)}.starting-framing-line{font-size:.95rem;color:var(--text-secondary);margin-bottom:32px;font-weight:400}.starting-chips-container{display:flex;flex-wrap:wrap;gap:10px;width:100%}.suggestion-chip{background-color:transparent;border:1px solid var(--color-accent);color:var(--color-accent);border-radius:var(--radius-pill);padding:8px 16px;font-size:.85rem;font-weight:500;cursor:pointer;transition:background-color var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast);text-align:left;line-height:1.4;outline:none}.suggestion-chip:hover{background-color:var(--color-accent);color:#fff}.suggestion-chip:active{transform:translateY(1px)}.message-row{display:flex;width:100%;animation:messageFadeIn .35s ease-out forwards;opacity:0;transform:translateY(10px)}@keyframes messageFadeIn{to{opacity:1;transform:translateY(0)}}.message-row.user{justify-content:flex-end}.message-row.wisechat{justify-content:flex-start}.message-bubble{max-width:85%;border-radius:var(--radius-md);padding:16px 20px;box-shadow:var(--shadow-sm);font-size:.9rem;line-height:1.5}@media (max-width: 600px){.message-bubble{max-width:95%}}.message-bubble.user-bubble{background-color:var(--bubble-user-bg);color:var(--bubble-user-text);border-bottom-right-radius:2px}.message-bubble.wisechat-bubble{background-color:var(--bubble-bot-bg);color:var(--bubble-bot-text);border:1px solid var(--border-color);border-bottom-left-radius:2px}.wisechat-sender-label{display:flex;align-items:center;gap:6px;font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--color-accent);margin-bottom:8px}.wisechat-sender-dot{width:12px;height:12px;background-color:var(--color-accent);border-radius:50%;flex-shrink:0}.wisechat-body{margin-bottom:12px}.typing-dots{display:inline-flex;align-items:center;gap:6px;padding:4px 2px}.typing-dots span{width:7px;height:7px;background-color:var(--color-accent);border-radius:50%;opacity:.3;animation:typingPulse 1.2s infinite ease-in-out}.typing-dots span:nth-child(1){animation-delay:0s}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes typingPulse{0%,to{opacity:.3;transform:scale(.8)}50%{opacity:1;transform:scale(1.15)}}.citation-container{display:flex;flex-direction:column;gap:8px;margin-top:14px;padding-top:14px;border-top:1px solid var(--border-color-light)}.citation-header{font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;font-weight:700;color:var(--text-muted)}.citation-chips{display:flex;flex-wrap:wrap;gap:8px}.citation-chip{position:relative;background-color:var(--bg-app);border:1px solid var(--border-color);color:var(--text-secondary);border-radius:var(--radius-pill);padding:4px 12px;font-size:.75rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);display:inline-flex;align-items:center;gap:4px;-webkit-user-select:none;user-select:none}.citation-chip:hover{background-color:var(--color-accent-light);border-color:var(--color-accent);color:var(--color-accent)}.citation-chip:after{content:"Click to open";position:absolute;bottom:125%;left:50%;transform:translate(-50%) translateY(4px);background-color:#212529;color:#fff;padding:4px 8px;border-radius:var(--radius-sm);font-size:.65rem;font-weight:400;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity var(--transition-fast),transform var(--transition-fast);box-shadow:0 2px 4px #0000001a;z-index:10}.citation-chip:hover:after{opacity:1;transform:translate(-50%) translateY(0)}.feedback-widget{display:flex;align-items:center;gap:12px;margin-top:14px;padding-top:8px;border-top:1px solid 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solid var(--border-color);padding:16px 24px;display:flex;justify-content:center;align-items:center}.input-container{max-width:800px;width:100%;display:flex;gap:12px;align-items:center}.input-field{flex:1;background-color:var(--bg-app);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:12px 16px;font-family:var(--font-sans);font-size:.9rem;color:var(--text-primary);outline:none;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.input-field:focus{border-color:var(--color-accent);box-shadow:0 0 0 3px #0b728526}.input-field::placeholder{color:var(--text-muted)}.send-btn{background-color:var(--color-accent);color:#fff;border:none;border-radius:var(--radius-md);padding:12px 20px;font-size:.9rem;font-weight:600;cursor:pointer;transition:background-color var(--transition-fast);display:flex;align-items:center;justify-content:center;gap:6px}.send-btn:hover{background-color:var(--color-accent-hover)}.send-btn:active{transform:translateY(.5px)}.send-btn:disabled{background-color:var(--border-color);cursor:not-allowed}.toast-container{position:fixed;bottom:24px;right:24px;display:flex;flex-direction:column;gap:10px;z-index:1000}.toast{background-color:#212529;color:#fff;padding:12px 20px;border-radius:var(--radius-md);font-size:.8rem;font-weight:500;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:10px;animation:toastIn .25s cubic-bezier(.16,1,.3,1) forwards;border-left:3px solid var(--color-accent)}@keyframes toastIn{0%{opacity:0;transform:translateY(12px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.toast-close{background:none;border:none;color:#fff9;cursor:pointer;font-size:1rem;padding:0 2px;line-height:1}.toast-close:hover{color:#fff}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.fallback-info{margin-top:10px;font-size:.75rem;color:var(--text-muted)}.document-preview-panel{width:38%;min-width:320px;max-width:480px;height:100%;background-color:#fff;border-left:1px solid var(--border-color);display:flex;flex-direction:column;animation:slideInRight .25s cubic-bezier(.16,1,.3,1) forwards;z-index:10;box-shadow:-4px 0 12px #00000008}@keyframes slideInRight{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.doc-panel-header{padding:16px 20px;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:flex-start;background-color:var(--bg-header)}.doc-panel-title{font-size:1.05rem;font-weight:700;color:var(--text-primary);line-height:1.3}.doc-panel-page{font-size:.78rem;font-weight:500;color:var(--color-accent);margin-top:2px}.doc-panel-close{background:none;border:none;font-size:1.25rem;color:var(--text-muted);cursor:pointer;padding:4px 8px;border-radius:var(--radius-sm);line-height:1;transition:all var(--transition-fast)}.doc-panel-close:hover{background-color:var(--border-color-light);color:var(--text-primary)}.doc-panel-meta{padding:12px 20px;background-color:var(--bg-app);border-bottom:1px solid var(--border-color-light);font-size:.75rem;color:var(--text-secondary);display:flex;flex-direction:column;gap:4px}.doc-panel-body{flex:1;overflow-y:auto;padding:24px 20px;font-size:.85rem;line-height:1.7;color:var(--text-primary);white-space:pre-wrap;background-color:#fff;font-family:var(--font-sans)}.doc-highlight{background-color:#fef08a;color:#0f172a;padding:2px 6px;border-radius:3px;font-weight:500;box-shadow:0 1px 2px #0000000d}