.chat-modal{display:none;position:fixed;z-index:1000;left:0;top:0;width:100%;height:100%;background:rgba(0,122,255,0.12);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.chat-modal.active{display:flex;align-items:flex-end;justify-content:center}
.chat-modal .modal-content{background:white;max-width:480px;width:100%;height:85vh;padding:0;display:flex;flex-direction:column;border-radius:24px 24px 0 0;animation:slideUp 0.3s cubic-bezier(0.4,0,0.2,1);box-shadow:0 -8px 32px rgba(0,0,0,0.08)}
.chat-container{display:flex;flex-direction:column;height:100%;overflow:hidden}
.chat-header{padding:14px 16px;border-bottom:1px solid var(--border-light);display:flex;justify-content:space-between;align-items:center;background:rgba(255,255,255,0.9)}
.chat-header-left{display:flex;align-items:center;gap:10px}
.chat-header-avatar{width:28px;height:28px;border-radius:50%;object-fit:cover;display:block}
.chat-header-title{font-size:17px;font-weight:600;background: var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.chat-messages{flex:1;overflow-y:auto;padding:20px 16px;background:#FBFBFD}
.chat-message{margin-bottom:14px;display:flex;width:100%}
.chat-message.user{justify-content:flex-end}
.chat-message.assistant{justify-content:flex-start}
.chat-bubble{max-width:100%;padding:12px 16px;border-radius:20px;font-size:14px;line-height:1.6;white-space:pre-wrap;word-break:break-word;display:inline-block}
.chat-message.user .chat-bubble{background: var(--primary-gradient);color:white;border-bottom-right-radius:6px;box-shadow:0 4px 12px rgba(0,122,255,0.2)}
.chat-message.assistant .chat-bubble{background:#fff;color:var(--text-primary);border-bottom-left-radius:6px;box-shadow:0 2px 8px rgba(0,122,255,0.06);border:1px solid rgba(0,122,255,0.08)}
.chat-bubble-group{display:flex;flex-direction:column;gap:8px;width:100%;max-width:80%}
.chat-message.user .chat-bubble-group{align-items:flex-end}
.chat-message.assistant .chat-bubble-group{align-items:flex-start}
.chat-image-grid{display:flex;flex-wrap:wrap;gap:8px}
.chat-image-item{width:120px;height:120px;border-radius:14px;overflow:hidden;background:rgba(0,122,255,0.06);cursor:pointer}
.chat-image-item img{width:100%;height:100%;object-fit:cover;display:block}
.chat-input-area{padding:12px 16px;border-top:1px solid rgba(0,122,255,0.08);background:var(--card);padding-bottom:calc(12px + var(--safe-area-bottom))}
.chat-input-row{display:flex;gap:10px;align-items:flex-end}
.chat-input-row textarea{flex:1;padding:12px 16px;border:2px solid rgba(0,122,255,0.12);border-radius:24px;resize:none;font-size:14px;font-family:inherit;max-height:100px;min-height:44px;outline:none;transition:border-color 0.2s,box-shadow 0.2s}
.chat-input-row textarea:focus{border-color:#007AFF;box-shadow:0 0 0 3px rgba(0,122,255,0.12)}
.chat-send-btn{min-width:54px;height:44px;padding:0 14px;border-radius:22px;border:none;background: var(--primary-gradient);color:white;cursor:pointer;font-size:14px;font-weight:600;flex-shrink:0;box-shadow:0 4px 12px rgba(0,122,255,0.2);transition:all 0.2s}
.chat-send-btn:hover{transform:scale(1.05)}
.chat-send-btn:disabled{opacity:0.5}
.chat-upload-btn{width:44px;height:44px;border-radius:50%;border:none;background:rgba(0,122,255,0.08);color:#007AFF;cursor:pointer;font-size:18px;flex-shrink:0;transition:all 0.2s}
.chat-upload-btn:hover{background:rgba(0,122,255,0.12);transform:scale(1.05)}
.chat-image-preview{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.chat-image-preview img{width:56px;height:56px;object-fit:cover;border-radius:10px;border:2px solid rgba(0,122,255,0.12)}
.chat-image-modal{position:fixed;inset:0;background:rgba(0,0,0,0.6);display:none;align-items:center;justify-content:center;z-index:1200}
.chat-image-modal.active{display:flex}
.chat-image-modal img{max-width:92vw;max-height:86vh;border-radius:12px;background:#000}
.chat-image-modal-close{position:fixed;top:16px;right:16px;width:34px;height:34px;border-radius:50%;background:rgba(0,0,0,0.6);color:#fff;font-size:18px;display:flex;align-items:center;justify-content:center;cursor:pointer}
.chat-loading{display:flex;align-items:center;gap:6px;padding:10px}
.chat-loading .dot{width:7px;height:7px;background: var(--primary-gradient);border-radius:50%;animation:chatDot 1.4s infinite}
.chat-loading .dot:nth-child(2){animation-delay:0.2s;background: var(--primary-gradient)}
.chat-loading .dot:nth-child(3){animation-delay:0.4s;background: var(--primary-gradient)}
@keyframes chatDot{0%,80%,100%{transform:scale(0)}40%{transform:scale(1)}}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-2px)}75%{transform:translateX(2px)}}
.chat-sessions{border-bottom:1px solid var(--border-light);padding:10px 16px;background:rgba(255,255,255,0.9)}
.chat-sessions-scroll{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px}
.chat-sessions-scroll::-webkit-scrollbar{display:none}
.chat-session-chip{flex-shrink:0;padding:8px 14px;border-radius:20px;font-size:13px;background:var(--card);cursor:pointer;white-space:nowrap;border:2px solid transparent;display:flex;align-items:center;gap:6px;transition:all 0.2s}
.chat-session-chip.active{border-color:#007AFF;color:#007AFF;font-weight:500;background:rgba(0,122,255,0.08)}
.chat-session-chip.new{background: var(--primary-gradient);color:white;border:none}
.session-title{max-width:80px;overflow:hidden;text-overflow:ellipsis}
.session-delete{font-size:14px;color:var(--text-secondary);opacity:0.6;transition:all 0.2s}
.session-delete:hover{opacity:1;color:#FF9500}
.session-delete.confirm{opacity:1;color:#FF9500;animation:shake 0.3s}
.selection-popup{position:fixed;background: var(--primary-gradient);color:white;padding:10px 16px;border-radius:12px;font-size:13px;font-weight:600;cursor:pointer;box-shadow:0 6px 20px rgba(0,122,255,0.25);z-index:999;display:none;white-space:nowrap;transition:transform 0.2s ease}
.selection-popup:hover{transform:scale(1.05)}
.selection-popup::after{content:'';position:absolute;bottom:-6px;left:50%;transform:translateX(-50%);border-width:6px 6px 0 6px;border-style:solid;border-color: var(--primary) transparent transparent transparent}
.selectable-content{user-select:text;-webkit-user-select:text}
.chat-meta{align-self:flex-start;margin:0 0 -2px 4px}
.chat-meta[hidden]{display:none}
.chat-meta summary{list-style:none;display:inline-block;cursor:pointer;outline:none}
.chat-meta summary::-webkit-details-marker{display:none}
.chat-meta-toggle{display:inline-flex;align-items:center;justify-content:center;padding:3px 5px;border-radius:10px;background:transparent;transition:all 0.2s cubic-bezier(0.4,0,0.2,1);cursor:pointer;color:#c7c7cc;line-height:0;opacity:0.7}
.chat-meta-toggle:hover{background:rgba(0,122,255,0.1);color:#007AFF;opacity:1;transform:translateY(-1px)}
.chat-meta[open] .chat-meta-toggle{background:rgba(0,122,255,0.13);color:#007AFF;opacity:1}
.cloud-icon{width:16px;height:11px;display:block;transition:all 0.3s ease}
.chat-meta-toggle:hover .cloud-icon{transform:translateY(-1px) scale(1.08)}
.chat-meta-toggle.streaming{color:#FF9500;opacity:1}
.chat-meta-toggle.streaming .cloud-icon{animation:cloudFloat 2.2s ease-in-out infinite}
@keyframes cloudFloat{0%,100%{transform:translateY(0) scale(1);opacity:0.85}50%{transform:translateY(-2px) scale(1.05);opacity:1}}
.chat-meta-panel{margin-top:6px;background:rgba(255,255,255,0.78);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(0,0,0,0.06);border-radius:14px;padding:10px 12px;box-shadow:0 6px 20px rgba(0,0,0,0.06);max-width:340px;display:flex;flex-direction:column;gap:9px;animation:metaPanelIn 0.22s cubic-bezier(0.4,0,0.2,1)}
@keyframes metaPanelIn{from{opacity:0;transform:translateY(-4px) scale(0.96)}to{opacity:1;transform:translateY(0) scale(1)}}
.meta-block[hidden]{display:none}
.meta-block.reasoning{font-size:12px;line-height:1.55;color:#6e6e73;white-space:pre-wrap;word-break:break-word;max-height:240px;overflow-y:auto;padding-right:2px}
.meta-block.tools{display:flex;flex-wrap:wrap;gap:5px}
.meta-tool-chip{display:inline-flex;align-items:center;gap:5px;padding:3px 8px;border-radius:10px;background:rgba(0,0,0,0.04);font-size:11px;color:#3a3a3c;line-height:1.2;letter-spacing:0.1px;transition:all 0.2s ease;animation:chipIn 0.25s ease}
@keyframes chipIn{from{opacity:0;transform:translateY(-2px) scale(0.92)}to{opacity:1;transform:translateY(0) scale(1)}}
.meta-tool-chip.running{background:rgba(255,149,0,0.08);color:#C45F00}
.meta-tool-chip.done{background:rgba(52,199,89,0.08);color:#1E7A3C}
.mtc-dot{width:5px;height:5px;border-radius:50%;background:currentColor;opacity:0.6}
.mtc-dot.spinning{animation:metaPulse 1.1s ease-in-out infinite}
.meta-block.stats{display:flex;flex-wrap:wrap;gap:10px;font-size:11px;color:#86868b;font-variant-numeric:tabular-nums;letter-spacing:0.2px;border-top:1px solid rgba(0,0,0,0.05);padding-top:7px}
.meta-block.stats .stat{display:inline-flex;align-items:center;gap:3px}
.meta-block.stats .stat i{font-style:normal;opacity:0.55;font-size:10.5px}
.chat-message.assistant.streaming .chat-bubble:not([hidden])::after{content:'▍';display:inline-block;color:#007AFF;animation:caretBlink 0.9s steps(1) infinite;margin-left:1px;font-weight:300}
@keyframes caretBlink{50%{opacity:0}}
.chat-bubble.md{white-space:normal}
.chat-bubble.md > *:first-child{margin-top:0}
.chat-bubble.md > *:last-child{margin-bottom:0}
.chat-bubble.md p{margin:0 0 8px;line-height:1.6}
.chat-bubble.md p:last-child{margin-bottom:0}
.chat-bubble.md h3,.chat-bubble.md h4,.chat-bubble.md h5{margin:10px 0 6px;font-weight:600;line-height:1.35;letter-spacing:0.2px}
.chat-bubble.md h3{font-size:15.5px}
.chat-bubble.md h4{font-size:14.5px}
.chat-bubble.md h5{font-size:13.5px;color:var(--text-secondary)}
.chat-bubble.md ul,.chat-bubble.md ol{margin:4px 0 8px;padding-left:22px}
.chat-bubble.md li{margin:3px 0;line-height:1.55}
.chat-bubble.md li > p{margin:0}
.chat-bubble.md ul{list-style:disc}
.chat-bubble.md ol{list-style:decimal}
.chat-bubble.md strong{font-weight:600}
.chat-bubble.md em{font-style:italic}
.chat-bubble.md del{opacity:0.6}
.chat-bubble.md hr{border:none;border-top:1px solid rgba(0,0,0,0.08);margin:10px 0}
.chat-bubble.md a{color:#007AFF;text-decoration:none;border-bottom:1px solid rgba(0,122,255,0.25)}
.chat-bubble.md a:hover{border-bottom-color:#007AFF}
.chat-bubble.md blockquote{margin:6px 0;padding:6px 12px;border-left:3px solid rgba(0,122,255,0.3);background:rgba(0,122,255,0.04);border-radius:0 8px 8px 0;color:var(--text-secondary)}
.chat-bubble.md blockquote p{margin:0}
.chat-bubble.md code.md-inline-code{background:rgba(0,0,0,0.05);padding:1px 6px;border-radius:5px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:0.88em;color:#d63384}
.chat-bubble.md pre.md-code-block{margin:8px 0;padding:10px 12px;background:rgba(0,0,0,0.04);border-radius:10px;overflow-x:auto;font-size:12.5px;line-height:1.5}
.chat-bubble.md pre.md-code-block code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:#1d1d1f;background:none;padding:0}
.chat-message.user .chat-bubble.md a{color:#fff;border-bottom-color:rgba(255,255,255,0.5)}
.meta-block.reasoning p{margin:0 0 6px}
.meta-block.reasoning ul,.meta-block.reasoning ol{margin:3px 0 5px;padding-left:18px}
.meta-block.reasoning li{margin:2px 0}
.meta-block.reasoning code.md-inline-code{background:rgba(0,0,0,0.06);padding:0 4px;border-radius:4px;font-size:0.88em}
.meta-block.reasoning pre.md-code-block{margin:5px 0;padding:6px 8px;background:rgba(0,0,0,0.05);border-radius:6px;font-size:11.5px}
@media (prefers-color-scheme: dark){.chat-modal .modal-content{background:var(--card)}.chat-header,.chat-sessions{background:rgba(28,28,30,0.9)}.chat-message.assistant .chat-bubble{background:var(--card);border-color:var(--border-light)}.chat-input-area{background:var(--card)}.chat-meta-toggle{background:transparent;color:#5c5c61}.chat-meta-toggle:hover{background:rgba(99,154,255,0.16);color:#7AB8FF}.chat-meta[open] .chat-meta-toggle{background:rgba(99,154,255,0.2);color:#7AB8FF}.chat-meta-panel{background:rgba(28,28,30,0.85);border-color:rgba(255,255,255,0.08)}.meta-block.reasoning{color:#b6b6bb}.meta-tool-chip{background:rgba(255,255,255,0.06);color:#d6d6db}.meta-tool-chip.running{background:rgba(255,149,0,0.14);color:#FFB45A}.meta-tool-chip.done{background:rgba(52,199,89,0.14);color:#7AE095}.meta-block.stats{border-top-color:rgba(255,255,255,0.08)}.chat-bubble.md hr{border-top-color:rgba(255,255,255,0.1)}.chat-bubble.md blockquote{background:rgba(99,154,255,0.07);border-left-color:rgba(99,154,255,0.4)}.chat-bubble.md code.md-inline-code{background:rgba(255,255,255,0.08);color:#FF9AC8}.chat-bubble.md pre.md-code-block{background:rgba(255,255,255,0.06)}.chat-bubble.md pre.md-code-block code{color:#e6e6eb}}