/* ═══════════════════════════════════════════════════════════
   Modern UI — Clean, crisp, professional
   ═══════════════════════════════════════════════════════════ */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
/* Use 100dvh (dynamic viewport height) so the page fills the actual
   visible area on mobile browsers. Falls back to -webkit-fill-available
   on older iOS Safari (pre-15.4 doesn't know dvh). */
html,body{height:100%;height:100dvh;height:-webkit-fill-available;overflow:hidden}
body{font-family:-apple-system,BlinkMacSystemFont,'SF Pro Display','PingFang SC','Microsoft YaHei','Segoe UI',system-ui,sans-serif;font-size:14px;line-height:1.5;color:var(--text,#1e293b);background:var(--bg,#FFFDFA)}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;font-size:inherit}
textarea{font-family:inherit}
a{color:#2563eb}

:root{--w:500px;--th:0px;--tabh:38px;--accent:#2563eb;--accent-light:#eff6ff;--bg:#FFFDFA;--bg2:#FDFAF3;--bg3:#F8F4E8;--text:#1e293b;--text2:#64748b;--text3:#94a3b8;--border:#EDE9E0;--radius:8px;--shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04)}
[data-theme="dark"]{--bg:#0f172a;--bg2:#1e293b;--bg3:#334155;--text:#f1f5f9;--text2:#94a3b8;--text3:#64748b;--border:#334155;--shadow:0 1px 3px rgba(0,0,0,.3)}

/* Topbar */






/* Tab Bar — browser-style tabs that connect to content below */
.tab-bar{display:flex;align-items:flex-end;height:var(--tabh);background:var(--bg);border-bottom:1px solid var(--border);overflow-x:auto;flex-shrink:0;padding:0 6px;gap:2px}
.tab-item{display:flex;align-items:center;gap:6px;padding:6px 12px;font-size:12px;font-weight:500;color:var(--text2);cursor:pointer;border-radius:8px 8px 0 0;border:1px solid transparent;white-space:nowrap;user-select:none;flex-shrink:0;transition:all .15s;margin-bottom:-1px;background:transparent}
.tab-item:hover{background:var(--bg2);color:var(--text)}
.tab-item.active{background:var(--bg);color:var(--text);border-color:var(--border);border-bottom-color:var(--bg)}
.tab-close{width:16px;height:16px;display:flex;align-items:center;justify-content:center;border-radius:4px;font-size:14px;opacity:.5;transition:all .15s}
.tab-close:hover{opacity:1;background:rgba(0,0,0,.1)}
.tab-bar::-webkit-scrollbar{height:0}

/* App Container */
.app-container{display:flex;height:calc(100dvh - var(--th));height:calc(100vh - var(--th));overflow:hidden}

/* Sidebar — 与对话区同层，收缩时挤出 */
.sidebar{width:var(--w);min-width:var(--w);max-width:var(--w);height:100%;background:var(--bg);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;transition:min-width .25s cubic-bezier(.4,0,.2,1),width .25s cubic-bezier(.4,0,.2,1),margin-left .25s cubic-bezier(.4,0,.2,1),opacity .2s}
.sidebar.collapsed{min-width:0;width:0;margin-left:0;opacity:0;overflow:hidden;border:none}
.sidebar-overlay{display:none}
.sidebar-tabs{display:flex;flex-shrink:0;padding:6px 8px;gap:2px;background:var(--bg);border-bottom:1px solid var(--border)}
.stab{flex:1;padding:8px 4px;font-size:14px;text-align:center;color:var(--text3);background:transparent;border:none;border-radius:6px;cursor:pointer;transition:all .15s;font-weight:500}
.stab:hover{color:var(--text);background:var(--bg2)}
.stab.active{color:#fff;background:var(--accent);box-shadow:0 1px 3px rgba(37,99,235,.3)}
.stab-panel{flex:1;display:none;flex-direction:column;overflow:hidden}
.stab-panel.active{display:flex}
.stab-bar{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.8px;color:var(--text3);flex-shrink:0}
.mem-scope-label{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;color:var(--text3);padding:6px 12px 2px}
.sidebar-footer{font-size:10px;color:var(--text3);text-align:center;padding:8px;border-top:1px solid var(--border);flex-shrink:0}

/* Lists */
.conv-list,.file-tree,.memory-list,.agent-list{flex:1;overflow-y:auto;min-height:0;padding:4px 6px;scrollbar-width:thin;scrollbar-color:transparent transparent}
.conv-list::-webkit-scrollbar,.file-tree::-webkit-scrollbar,.memory-list::-webkit-scrollbar,.agent-list::-webkit-scrollbar,.messages::-webkit-scrollbar{width:4px}
.conv-list::-webkit-scrollbar-thumb,.file-tree::-webkit-scrollbar-thumb,.memory-list::-webkit-scrollbar-thumb,.agent-list::-webkit-scrollbar-thumb,.messages::-webkit-scrollbar-thumb{background:transparent;border-radius:10px}
.conv-list:hover::-webkit-scrollbar-thumb,.file-tree:hover::-webkit-scrollbar-thumb,.memory-list:hover::-webkit-scrollbar-thumb,.agent-list:hover::-webkit-scrollbar-thumb,.messages:hover::-webkit-scrollbar-thumb{background:var(--border)}

/* List items */
.conv-item,.memory-item,.agent-item{display:flex;align-items:center;padding:7px 10px;border-radius:6px;cursor:pointer;gap:8px;margin-bottom:1px;transition:all .1s;font-size:13px;color:var(--text)}
.conv-item:hover,.memory-item:hover,.agent-item:hover{background:var(--bg2)}
.conv-item.active{background:var(--accent-light);color:var(--accent)}
.conv-item-content,.memory-content,.agent-item-content{flex:1;min-width:0}
.conv-item-title,.memory-title,.agent-item-title{font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv-item-meta,.memory-meta,.agent-item-meta{font-size:11px;color:var(--text3);margin-top:1px}
.conv-item-delete{opacity:0;flex-shrink:0;font-size:14px;color:var(--text3);padding:2px 6px;border-radius:4px;transition:all .15s}
.conv-item:hover .conv-item-delete{opacity:1}
.conv-item-delete:hover{background:#fee2e2;color:#ef4444}
.conv-item-resume{opacity:0;flex-shrink:0;font-size:11px;color:#16a34a;padding:2px 6px;border-radius:4px;transition:all .15s;border:1px solid #d1fae5}
.conv-item:hover .conv-item-resume{opacity:1}
.conv-item-resume:hover{background:#d1fae5;color:#15803d}
.conv-item-kill{opacity:0;flex-shrink:0;font-size:11px;color:#ef4444;padding:2px 8px;border-radius:4px;transition:all .15s;border:1px solid #fecaca;background:transparent;cursor:pointer}
.conv-item:hover .conv-item-kill{opacity:1}
.conv-item-kill:hover{background:#fee2e2}
.conv-item-reload{opacity:0;flex-shrink:0;font-size:13px;color:#2563eb;padding:2px 6px;border-radius:4px;transition:all .15s;border:1px solid #dbeafe;background:transparent;cursor:pointer;margin-right:2px}
.conv-item:hover .conv-item-reload{opacity:1}
.conv-item-reload:hover{background:#dbeafe;color:#1d4ed8}
.conv-dot{display:inline-block;width:8px;height:8px;border-radius:50%;flex-shrink:0;margin:0 8px 0 4px}
.conv-dot-live{background:#16a34a;box-shadow:0 0 0 2px rgba(22,163,74,.15)}
.conv-dot-dead{background:#cbcbcb}
.conv-main-badge{color:#d97706;font-size:13px;font-weight:bold;margin-right:4px;flex-shrink:0}
.conv-item.is-main{border-left:3px solid #d97706;padding-left:5px}
.empty-hint{padding:20px;text-align:center;color:var(--text3);font-size:12px}

/* File tree */
.tree-item{display:flex;align-items:center;padding:5px 8px;gap:2px;font-size:13px;color:var(--text2);border-radius:4px;margin:1px 2px;cursor:pointer;transition:all .1s;white-space:nowrap}
.tree-item:hover{background:var(--bg2);color:var(--text)}
.tree-toggle{width:16px;height:16px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:10px;color:var(--text3)}
.tree-icon{width:18px;height:18px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:13px}
.tree-name{flex:1;overflow:hidden;text-overflow:ellipsis;margin-left:2px}
.tree-empty{font-size:11px;color:var(--text3);padding:2px 8px;font-style:italic}

/* Icon btn */
.icon-btn{width:26px;height:26px;display:flex;align-items:center;justify-content:center;border-radius:5px;color:var(--text3);transition:all .15s;font-size:14px}
.icon-btn:hover{background:var(--bg2);color:var(--text)}

/* Chat */
.chat-area{flex:1;display:flex;flex-direction:column;background:var(--bg);min-width:0;overflow:hidden;width:100%;max-width:900px;margin:0 auto}
.welcome{display:none;flex-direction:column;align-items:center;justify-content:center;padding:60px 40px;text-align:center}
.welcome.show{display:flex;flex:1;overflow:auto}
.welcome-logo{margin-bottom:24px;opacity:.85}
.welcome-title{font-size:26px;font-weight:700;margin-bottom:8px;letter-spacing:-.02em;color:var(--text)}
.welcome-subtitle{font-size:15px;color:var(--text2);max-width:420px;line-height:1.6}
.messages{flex:1 1 0;overflow-y:auto;min-height:0;padding:24px 0;scrollbar-width:none;scrollbar-color:transparent transparent}
.messages::-webkit-scrollbar{width:0;height:0}
.messages::-webkit-scrollbar-thumb{background:transparent}
.input-area{flex-shrink:0;padding:12px 48px 16px}
.msg-wrapper{padding:0 48px}
.msg-row{display:flex;padding:8px 0}
.msg-row.assistant{justify-content:flex-start}
.msg-row.user{justify-content:flex-end}
.msg-avatar{width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:12px;font-weight:600;font-family:system-ui}
.msg-row.assistant .msg-avatar{background:var(--accent);color:#fff;margin-right:10px}
.msg-row.user .msg-avatar{background:var(--bg3);color:var(--text2);margin-left:10px;order:2}
.msg-bubble{max-width:70%;padding:10px 16px;border-radius:16px;font-size:14px;line-height:1.6;word-break:break-word}
.msg-row.assistant .msg-bubble{background:#fff;color:var(--text);border:1px solid var(--border);border-bottom-left-radius:6px;box-shadow:var(--shadow)}
.msg-row.user .msg-bubble{background:var(--accent);color:#fff;border-bottom-right-radius:6px}
.msg-role{font-size:10px;opacity:.5;margin-bottom:3px;font-weight:500;letter-spacing:.3px;text-transform:uppercase}
.msg-row.user .msg-role{text-align:right}

/* Input */
.input-wrapper{display:flex;align-items:flex-end;gap:8px;background:#fff;border:1.5px solid var(--border);border-radius:20px;padding:8px 16px;transition:all .2s;box-shadow:var(--shadow)}
.input-wrapper:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.1)}
.chat-input{flex:1;resize:none;border:none;outline:none;font-size:14px;line-height:1.5;max-height:160px;background:transparent;color:var(--text);padding:4px 0}
.chat-input::placeholder{color:var(--text3)}
.send-btn{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--accent);color:#fff;flex-shrink:0;transition:all .15s;font-size:16px}
.send-btn:hover{opacity:.9;transform:scale(1.05)}
.send-btn:disabled{opacity:.3;cursor:not-allowed;transform:none}
.input-hint{text-align:center;margin-top:8px;font-size:11px;color:var(--text3)}

/* Thinking */
.thinking-dots{display:inline-flex;gap:3px;padding:4px 0}
.thinking-dots span{width:6px;height:6px;border-radius:50%;background:var(--accent);animation:bounce 1.4s infinite ease-in-out}
.thinking-dots span:nth-child(1){animation-delay:0s}
.thinking-dots span:nth-child(2){animation-delay:.18s}
.thinking-dots span:nth-child(3){animation-delay:.36s}
@keyframes bounce{0%,80%,100%{transform:scale(.3);opacity:.3}40%{transform:scale(1);opacity:1}}
.thinking-label{font-size:11px;color:var(--text3);font-style:italic;margin-left:4px}
.streaming .msg-bubble::after{content:'';display:inline-block;width:6px;height:12px;background:var(--accent);margin-left:2px;vertical-align:middle;animation:blink .8s infinite;border-radius:3px;opacity:.5}
@keyframes blink{0%,50%{opacity:.5}51%,100%{opacity:.15}}

/* Editor */
.tab-content-area{flex:1;display:flex;flex-direction:column;min-width:0;overflow:hidden}
.tab-panel{display:none;flex:1;flex-direction:column;overflow:hidden;min-height:0}
.tab-panel.active{display:flex}
.editor-toolbar{display:flex;align-items:center;justify-content:space-between;padding:6px 14px;background:var(--bg2);border-bottom:1px solid var(--border);flex-shrink:0}
.editor-filepath{font-size:12px;font-weight:500;color:var(--text2)}
.editor-preview-wrap{flex:1;display:flex;overflow:hidden;min-height:0}
.editor-textarea{flex:1;min-height:0;min-width:0;border:none;outline:none;resize:none;padding:18px 22px;font-family:'SF Mono','Cascadia Code','Consolas',monospace;font-size:13px;line-height:1.7;color:var(--text);background:var(--bg);tab-size:2}
.editor-mode-bar{display:flex;justify-content:flex-start;padding:0 14px;background:var(--bg);border-bottom:1px solid var(--border);flex-shrink:0;gap:0}
.mode-tab{padding:6px 14px;font-size:12px;font-weight:500;color:var(--text3);border-bottom:2px solid transparent;cursor:pointer;transition:all .15s}
.mode-tab:hover{color:var(--text)}
.mode-tab.active{color:var(--accent);border-bottom-color:var(--accent)}
.editor-preview{flex:1;min-height:0;padding:18px 24px;overflow-y:auto;font-size:14px;line-height:1.7}
.editor-large-file-banner{padding:12px 16px;background:#3a2f1a;color:#ffd896;border-bottom:1px solid #6b5a30;font-size:13px;line-height:1.5;flex-shrink:0}
.editor-large-file-banner a.large-file-download{color:#5cc8ff;text-decoration:underline;margin-left:8px;cursor:pointer}
.editor-large-file-banner a.large-file-download:hover{color:#fff}

/* Virtual viewer for large files (textarea can't handle multi-MB) */
.virtual-viewer{flex:1;min-height:0;overflow:auto;background:var(--bg);font-family:'SF Mono','Cascadia Code','Consolas',monospace;font-size:13px;line-height:1.7;color:var(--text);position:relative;outline:none}
.virtual-viewer-spacer{position:relative;width:100%}
.virtual-viewer-line{position:absolute;left:0;padding:0 24px 0 64px;white-space:pre;box-sizing:border-box;display:flex;align-items:flex-start}
/* 去掉 right:0 + overflow:hidden + text-overflow:ellipsis：原把超宽行截断，
   移动端窄屏长段落/长代码行的尾部看不到。改成不限制宽度，容器 .virtual-viewer
   的 overflow:auto 横向滚动可见全部内容（虚拟滚动仍按固定行高定位，不受影响）。 */
.virtual-viewer-line .vvl-num{position:absolute;left:14px;width:40px;text-align:right;color:var(--text3);user-select:none;font-size:12px;line-height:1.7;flex-shrink:0}
.virtual-viewer-status{padding:6px 14px;background:var(--bg2);border-top:1px solid var(--border);font-size:11px;color:var(--text3);display:flex;justify-content:space-between;align-items:center;flex-shrink:0}
.virtual-viewer-status input.go-to-line{width:80px;padding:3px 8px;border:1px solid var(--border);border-radius:4px;background:var(--bg);color:var(--text);font-family:inherit;font-size:12px;outline:none}
.virtual-viewer-status input.go-to-line:focus{border-color:var(--accent)}

/* Image viewer for image files (png/jpg/gif/webp/svg/...) */
.image-viewer{flex:1;min-height:0;overflow:auto;background:#1a1a25;display:flex;align-items:center;justify-content:center;padding:20px}
.image-viewer img{max-width:100%;max-height:100%;object-fit:contain;box-shadow:0 4px 20px rgba(0,0,0,.5);user-select:none;-webkit-user-drag:none}
.virtual-viewer-status a{color:var(--accent);text-decoration:none;cursor:pointer}
.virtual-viewer-status a:hover{text-decoration:underline}
.editor-textarea,.editor-preview{scrollbar-width:thin;scrollbar-color:transparent transparent}
.editor-textarea::-webkit-scrollbar,.editor-preview::-webkit-scrollbar{width:4px}
.editor-textarea::-webkit-scrollbar-thumb,.editor-preview::-webkit-scrollbar-thumb{background:transparent;border-radius:10px}
.editor-textarea:hover::-webkit-scrollbar-thumb,.editor-preview:hover::-webkit-scrollbar-thumb{background:var(--border)}

/* Agent & Memory tab */
.agent-tab-body,.mem-tab-body{flex:1;display:flex;flex-direction:column;overflow:hidden}
.agent-meta-bar,.mem-meta-bar{display:flex;align-items:center;gap:8px;padding:8px 14px;background:var(--bg2);border-bottom:1px solid var(--border);flex-shrink:0;flex-wrap:wrap}
.agent-name-input{width:120px}.agent-desc-input{flex:1;min-width:120px}
.agent-name-input,.agent-desc-input,.mem-name-input,.mem-desc-input{padding:5px 10px;border:1px solid var(--border);border-radius:6px;font-size:13px;color:var(--text);background:var(--bg);outline:none;transition:border-color .15s}
.agent-name-input:focus,.agent-desc-input:focus,.mem-name-input:focus,.mem-desc-input:focus{border-color:var(--accent)}
.agent-role-select,.mem-type-select,.mem-scope-select{padding:5px 8px;border:1px solid var(--border);border-radius:6px;font-size:12px;color:var(--text);background:var(--bg);outline:none;cursor:pointer}
.agent-prompt-textarea,.mem-content-textarea{flex:1;width:100%;border:none;outline:none;resize:none;padding:16px 20px;font-family:system-ui,sans-serif;font-size:13px;line-height:1.7;color:var(--text);background:var(--bg)}
.agent-chat-body{flex:1;display:flex;flex-direction:column;overflow:hidden}
.agent-chat-info{padding:8px 14px;font-size:12px;background:var(--accent-light);border-bottom:1px solid var(--border);color:var(--accent);font-weight:500;flex-shrink:0}
.agent-chat-messages{flex:1;overflow-y:auto;padding:16px 20px}
.agent-chat-input-row{display:flex;align-items:flex-end;gap:8px;padding:12px 16px;border-top:1px solid var(--border);background:var(--bg);gap:8px}
.agent-chat-input{flex:1;resize:none;border:1.5px solid var(--border);border-radius:12px;padding:8px 14px;font-size:13px;outline:none;color:var(--text);background:#fff;transition:border-color .15s}
.agent-chat-input:focus{border-color:var(--accent)}

/* Modal — 现代风格：大圆角、多层柔阴影、玻璃背景、滑入动画 */
.modal-overlay{position:fixed;inset:0;background:radial-gradient(ellipse at top,rgba(20,20,30,.45),rgba(0,0,0,.55));z-index:500;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);padding:20px;animation:modalIn .25s cubic-bezier(.32,.72,0,1)}
.modal-overlay.closing{animation:modalOut .15s cubic-bezier(.32,.72,0,1) forwards}
.modal{background:var(--bg);border:1px solid rgba(255,255,255,.06);border-radius:20px;box-shadow:0 32px 80px -20px rgba(0,0,0,.35),0 0 0 1px rgba(255,255,255,.04) inset,0 1px 0 rgba(255,255,255,.06) inset;width:440px;max-width:100%;max-height:90vh;overflow-y:auto;animation:modalPop .3s cubic-bezier(.32,.72,0,1)}
.modal-wide{width:600px}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:22px 26px 16px;border-bottom:1px solid var(--border);gap:16px}
.modal-title{font-size:17px;font-weight:600;letter-spacing:-.01em;color:var(--text);display:flex;align-items:center;gap:10px}
.modal-title-icon{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--accent),#818cf8);display:flex;align-items:center;justify-content:center;font-size:14px;color:#fff;flex-shrink:0}
.modal-body{padding:20px 26px;color:var(--text);font-size:14px;line-height:1.6}
.modal-body p{margin:0 0 8px 0}
.modal-body p:last-child{margin-bottom:0}
.modal-footer{display:flex;justify-content:flex-end;gap:10px;padding:16px 26px 22px;border-top:1px solid var(--border);background:rgba(0,0,0,.01)}
.modal-close-x{width:32px;height:32px;border-radius:8px;border:none;background:transparent;color:var(--text3);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;transition:all .15s}
.modal-close-x:hover{background:var(--bg2);color:var(--text)}
@keyframes modalIn{from{opacity:0}to{opacity:1}}
@keyframes modalOut{to{opacity:0}}
@keyframes modalPop{from{opacity:0;transform:translateY(16px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}

/* 表单控件 */
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:12px;font-weight:600;margin-bottom:8px;color:var(--text2);letter-spacing:.3px;text-transform:uppercase}
.form-input,.form-select,.form-textarea{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:10px;font-size:14px;font-family:inherit;color:var(--text);background:var(--bg);outline:none;transition:all .15s}
.form-input:hover,.form-select:hover,.form-textarea:hover{border-color:var(--text3)}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(99,102,241,.12)}
.form-hint{font-size:12px;color:var(--text3);margin-top:6px;line-height:1.4}
.form-row{display:flex;gap:12px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border:1px solid transparent;border-radius:10px;font-size:13px;font-weight:500;font-family:inherit;cursor:pointer;transition:all .15s;user-select:none;line-height:1.2;white-space:nowrap}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(99,102,241,.25)}
.btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}
.btn-primary{background:linear-gradient(180deg,var(--accent),#4f46e5);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.15) inset,0 4px 12px rgba(99,102,241,.25)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 1px 0 rgba(255,255,255,.15) inset,0 6px 18px rgba(99,102,241,.35)}
.btn-primary:active{transform:translateY(0);box-shadow:0 1px 0 rgba(255,255,255,.15) inset,0 2px 6px rgba(99,102,241,.2)}
.btn-secondary{color:var(--text);background:var(--bg2);border-color:var(--border)}
.btn-secondary:hover{background:var(--bg3);border-color:var(--text3)}
.btn-danger{color:#fff;background:linear-gradient(180deg,#ef4444,#dc2626);box-shadow:0 1px 0 rgba(255,255,255,.15) inset,0 4px 12px rgba(239,68,68,.25)}
.btn-danger:hover{transform:translateY(-1px);box-shadow:0 1px 0 rgba(255,255,255,.15) inset,0 6px 18px rgba(239,68,68,.35)}
.btn-danger:active{transform:translateY(0)}
.btn-outline{border:1px solid var(--border);color:var(--text2);background:transparent}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:rgba(99,102,241,.04)}
.btn-ghost{color:var(--text2);background:transparent}
.btn-ghost:hover{background:var(--bg2);color:var(--text)}
.btn-sm{padding:6px 12px;font-size:12px;border-radius:8px}

/* Toast — 顶部右侧滑入，彩色左边条 + 关闭按钮 */
.toast-container{position:fixed;top:20px;right:20px;z-index:1100;display:flex;flex-direction:column;gap:10px;pointer-events:none;max-width:calc(100vw - 40px)}
.toast{display:flex;align-items:flex-start;gap:12px;padding:12px 16px;background:var(--bg);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:12px;box-shadow:0 12px 32px -8px rgba(0,0,0,.25),0 0 0 1px rgba(255,255,255,.04) inset;color:var(--text);font-size:13px;font-weight:500;line-height:1.4;min-width:240px;max-width:380px;pointer-events:auto;animation:toastSlideIn .3s cubic-bezier(.32,.72,0,1);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.toast.closing{animation:toastSlideOut .2s cubic-bezier(.32,.72,0,1) forwards}
.toast-icon{width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff;flex-shrink:0;margin-top:1px}
.toast-msg{flex:1;min-width:0;word-break:break-word}
.toast-close{width:20px;height:20px;border-radius:6px;border:none;background:transparent;color:var(--text3);cursor:pointer;font-size:14px;line-height:1;display:flex;align-items:center;justify-content:center;flex-shrink:0;padding:0;transition:all .12s}
.toast-close:hover{background:var(--bg2);color:var(--text)}
.toast.success{border-left-color:#10b981}.toast.success .toast-icon{background:#10b981}
.toast.error{border-left-color:#ef4444}.toast.error .toast-icon{background:#ef4444}
.toast.info{border-left-color:var(--accent)}.toast.info .toast-icon{background:var(--accent)}
.toast.warning{border-left-color:#f59e0b}.toast.warning .toast-icon{background:#f59e0b}
@keyframes toastSlideIn{from{opacity:0;transform:translateX(20px) scale(.96)}to{opacity:1;transform:translateX(0) scale(1)}}
@keyframes toastSlideOut{to{opacity:0;transform:translateX(20px) scale(.96)}}

/* Dialog 工具专用类（confirm / prompt / alert） */
.dialog-message{color:var(--text);font-size:14px;line-height:1.6;margin:0}
.dialog-input{width:100%;margin-top:14px;padding:10px 14px;border:1px solid var(--border);border-radius:10px;font-size:14px;font-family:inherit;color:var(--text);background:var(--bg);outline:none;transition:all .15s}
.dialog-input:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(99,102,241,.12)}

/* Markdown content */
.msg-content h1,.msg-content h2,.msg-content h3{margin-top:1em;margin-bottom:.4em;font-weight:600}
.msg-content h1{font-size:1.3em}.msg-content h2{font-size:1.15em}.msg-content h3{font-size:1.05em}
.msg-content p{margin-bottom:.6em}.msg-content p:last-child{margin-bottom:0}
.msg-content ul,.msg-content ol{padding-left:1.5em;margin-bottom:.6em}
.msg-content code{font-family:monospace;font-size:.88em;background:var(--bg3);padding:2px 6px;border-radius:4px}
.msg-content pre{margin:10px 0;border-radius:8px;overflow:hidden;border:1px solid var(--border)}
.msg-content pre code{display:block;padding:14px 18px;overflow-x:auto;font-size:12px;line-height:1.5;background:var(--bg2)}
.msg-content blockquote{border-left:3px solid var(--accent);padding-left:14px;margin:10px 0;color:var(--text2)}
.msg-content table{border-collapse:collapse;width:100%;margin:10px 0;font-size:12px}
.msg-content th,.msg-content td{border:1px solid var(--border);padding:6px 10px;text-align:left}
.msg-content th{background:var(--bg2);font-weight:600}
.msg-content img{max-width:100%;border-radius:8px}
.msg-row.user .msg-bubble a{color:rgba(255,255,255,.9)}
.code-block-header{display:flex;align-items:center;justify-content:space-between;padding:5px 12px;background:var(--bg3);border-bottom:1px solid var(--border);font-size:11px;color:var(--text2)}
.code-block-header+pre{margin-top:0!important;border-top-left-radius:0!important;border-top-right-radius:0!important}

/* Mobile */
/* ══════════════════════════════════════════════════════════════ */
/*   移动端专用样式（768px 断点，不影响 PC 端）                      */
/* ══════════════════════════════════════════════════════════════ */

@media(max-width:768px){
  /* ── 全局触屏优化 ──────────────────────── */
  html.is-mobile, html.is-mobile body{
    -webkit-overflow-scrolling:touch;
    overscroll-behavior-y:contain;
    user-select:none;
    -webkit-user-select:none;
    -webkit-tap-highlight-color:transparent;
    touch-action:manipulation;
  }
  html.is-mobile input, html.is-mobile textarea,
  .editor-textarea, .virtual-viewer, .msg-content{user-select:text;-webkit-user-select:text}

  /* ── Bottom Tab Bar ─────────────────────── */
  .mobile-tab-bar{
    display:flex;position:fixed;bottom:0;left:0;right:0;z-index:900;
    height:60px;padding-bottom:env(safe-area-inset-bottom,0);
    background:var(--bg);border-top:1px solid var(--border);
    justify-content:flex-start;align-items:center;gap:2px;
    overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;
    scrollbar-width:none;box-shadow:0 -4px 20px rgba(0,0,0,.12);
  }
  .mobile-tab-bar::-webkit-scrollbar{display:none}
  .mtb-tab{
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:3px;padding:6px 10px;min-width:68px;min-height:44px;flex:0 0 auto;
    border:none;background:transparent;color:var(--text3);cursor:pointer;
    font-family:inherit;font-size:10px;font-weight:500;transition:all .15s;
    -webkit-tap-highlight-color:transparent;
  }
  .mtb-tab.active{color:var(--accent)}
  .mtb-tab:active{transform:scale(.92)}
  .mtb-icon{font-size:22px;line-height:1;transition:transform .15s}
  .mtb-tab.active .mtb-icon{transform:translateY(-2px)}
  .mtb-tab.has-badge::after{content:'';position:absolute;top:4px;right:calc(50% - 16px);
    width:7px;height:7px;border-radius:50%;background:var(--accent)}

  /* ── 主布局适配 ──────────────────────────── */
  .app-container{padding-bottom:56px}
  .sidebar{
    position:fixed;top:0;left:0;width:100vw!important;
    max-width:100vw!important;min-width:100vw!important;
    height:100%;z-index:800;
    transform:translateX(-100%);
    transition:transform .25s cubic-bezier(.32,.72,0,1);
    box-shadow:0 0 40px rgba(0,0,0,.3);
  }
  .sidebar.mobile-fullscreen{
    transform:translateX(0);display:flex!important;
  }
  /* 移动端底部已经有模块导航，隐藏侧栏顶部重复 tabs */
  #sidebar-tabs{display:none!important}
  .stab{font-size:13px;padding:10px 2px;gap:2px}

  /* 移动端 tab bar 紧凑 + 横向滚动 */
  .tab-bar{padding:0!important;height:42px;overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;scrollbar-width:none;gap:0}
  .tab-bar::-webkit-scrollbar{display:none}
  .tab-bar .tab-item{min-height:42px;padding:6px 12px;font-size:13px;flex:0 0 auto}
  .tab-bar .tab-close{width:28px;font-size:18px}
  .tab-bar > div[style*="margin-left:auto"]{padding:0 8px;flex:0 0 auto;font-size:11px}

  /* 聊天区全宽 */
  .chat-area{max-width:100%;padding:0}
  .msg-wrapper{padding:0 10px}
  .msg-bubble{max-width:90%;font-size:14px;padding:10px 14px}
  .msg-avatar{width:28px!important;height:28px!important;font-size:12px!important}
  .msg-role{font-size:11px}
  .msg-content{font-size:14px;line-height:1.7}
  .input-area{padding:0 10px 10px}
  .input-wrapper{padding:8px 12px;border-radius:16px}
  .chat-input{font-size:16px!important;min-height:42px;padding:8px 0}
  #btn-send{width:36px;height:36px;font-size:16px}
  #btn-upload{padding:8px 10px}
  .welcome-title{font-size:20px}.welcome-subtitle{font-size:14px;max-width:90vw}
  :root{--w:50vw}

  /* 侧栏按钮隐藏 */
  .sidebar-toggle-btn{display:none!important}

  /* 终端：xterm 自己管理内部 viewport 滚动 */
  #tab-content-area{display:flex!important;flex-direction:column;min-height:0}
  #panel-terminal{flex:1;flex-direction:column;min-height:0}
  #panel-terminal.active{display:flex!important}
  .terminal-wrap{flex:1;padding:4px 0 0 0!important;max-width:100%;overflow:hidden!important}
  .terminal-wrap #term{flex:1;overflow:hidden}
  /* 确保 xterm 内部 viewport 高度正确 */
  .terminal-wrap .xterm{height:100%!important}
  .terminal-wrap .xterm-screen{height:100%!important}
  .terminal-wrap .xterm-viewport{
    touch-action:pan-y!important;
    -webkit-overflow-scrolling:touch;
  }

  /* tab 面板 + 侧栏面板弹性滚动 */
  .tab-panel, .tab-content-area, .stab-panel{-webkit-overflow-scrolling:touch;overflow-y:auto!important}

  /* ── 弹窗底部弹出 ────────────────────────── */
  .modal-overlay{padding:10px;align-items:flex-end}
  .modal{width:100%!important;max-width:100%!important;
    border-radius:20px 20px 0 0;max-height:88vh;
    animation:modalSlideUp .3s cubic-bezier(.32,.72,0,1)}
  .modal-wide{width:100%!important}
  .modal-header{padding:18px 20px 14px}
  .modal-title{font-size:16px}
  .modal-body{padding:12px 20px 20px}
  .modal-footer{padding:12px 20px 24px}
  .modal-close-x{width:40px;height:40px;font-size:20px}
  @keyframes modalSlideUp{from{transform:translateY(30px) scale(.98);opacity:0}
    to{transform:translateY(0) scale(1);opacity:1}}

  /* ── 触控目标 44px ──────────────────────── */
  .btn, .icon-btn, .stab, .tab-item, .tab-close,
  .conv-item, .memory-item, .agent-item, .tree-item,
  .form-input, .form-select, .dd-item, .mode-tab{min-height:44px}
  .btn{padding:10px 20px;font-size:14px}
  .btn-sm{padding:8px 14px;font-size:13px;min-height:40px}
  .tab-close{width:44px;font-size:22px}
  .stab{padding:10px 8px}
  .tree-item{padding:10px 12px}
  .conv-item, .memory-item, .agent-item{padding:10px 10px;gap:8px}

  /* ── 文件树 ──────────────────────────────── */
  .file-tree{font-size:14px}
  .tree-name{font-size:14px;line-height:1.6}

  /* ── 编辑器全屏 ──────────────────────────── */
  .tab-panel.active[data-tab^="file-"]{z-index:700;background:var(--bg)}
  .editor-toolbar{padding:10px 14px;gap:8px}
  .editor-filepath{font-size:12px;word-break:break-all}
  .editor-textarea{padding:14px 16px;font-size:14px;line-height:1.8}
  .editor-preview{padding:14px 16px;font-size:15px;line-height:1.8}
  .editor-mode-bar{padding:0 14px}
  .mode-tab{padding:10px 16px;font-size:13px;min-height:40px}

  /* ── 虚拟滚动查看器 ──────────────────────── */
  .virtual-viewer-line{padding:0 16px 0 56px;font-size:13px;line-height:1.6}
  .vvl-num{left:12px;width:36px;font-size:11px}
  .virtual-viewer-status{padding:10px 14px;font-size:12px;flex-wrap:wrap;gap:6px}
  .virtual-viewer-status input.go-to-line{width:70px;padding:6px 8px;font-size:14px;min-height:36px}

  /* ── 对话列表 ──────────────────────────────── */
  .conv-item-kill,.conv-item-reload,.conv-item-resume,.conv-item-delete{display:none}
  .conv-item-title{font-size:13px}
  .conv-item-meta{font-size:11px}
  .conv-main-badge{margin-right:2px}

  /* ── Toast ────────────────────────────────── */
  .toast-container{top:10px;right:10px;left:10px;max-width:none}
  .toast{max-width:100%}

  /* ── 长按菜单 ────────────────────────────── */
  .mobile-context-menu{
    background:var(--bg);border:1px solid var(--border);
    border-radius:14px;box-shadow:0 12px 40px rgba(0,0,0,.35);
    overflow:hidden;animation:menuPop .2s cubic-bezier(.32,.72,0,1);
    z-index:10000;
  }
  .mcm-item{
    display:flex;align-items:center;gap:12px;padding:13px 18px;
    font-size:15px;color:var(--text);cursor:pointer;min-height:44px;
    border-bottom:1px solid rgba(255,255,255,.04);transition:background .1s;
  }
  .mcm-item:last-child{border-bottom:none}
  .mcm-item:active{background:var(--bg2)}
  .mcm-icon{font-size:20px;flex-shrink:0}
  @keyframes menuPop{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}

  /* ── 终端自由选择层 ─────────────────────── */
  .term-mobile-select-layer{position:absolute;inset:0;z-index:20;pointer-events:none;overflow:hidden}
  .term-select-mark{position:absolute;background:rgba(56,132,255,.34);border-radius:3px;pointer-events:none;mix-blend-mode:multiply}
  .term-select-handle{position:absolute;width:22px;height:22px;border-radius:50%;background:#3884ff;border:2px solid #fff;box-shadow:0 2px 10px rgba(0,0,0,.35);pointer-events:auto;touch-action:none}
  .term-select-handle.start::after,.term-select-handle.end::after{content:'';position:absolute;left:8px;top:18px;width:2px;height:16px;background:#3884ff;border-radius:2px}
  .term-mobile-select-toolbar{position:absolute;display:flex;gap:8px;background:rgba(20,20,28,.92);border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:6px;box-shadow:0 8px 24px rgba(0,0,0,.35);pointer-events:auto;backdrop-filter:blur(10px)}
  .term-mobile-select-toolbar button{min-height:36px;padding:0 14px;border:none;border-radius:8px;background:#3884ff;color:#fff;font-size:14px;font-weight:600}
  .term-mobile-select-toolbar button[data-act="cancel"]{background:#3a3a45;color:#ddd}

  /* ── 移动端终端虚拟键盘条（↑↓←→ Enter Esc Tab ^C） ── */
  .term-mobile-keybar{
    position:fixed;left:0;right:0;bottom:calc(60px + env(safe-area-inset-bottom,0));
    z-index:950;display:flex;justify-content:space-between;align-items:stretch;
    background:rgba(20,20,28,.92);backdrop-filter:blur(10px);
    border-top:1px solid rgba(255,255,255,.08);
    padding:6px 4px;gap:3px;
  }
  .term-mobile-keybar button{
    flex:1;min-height:36px;padding:4px 6px;
    border:none;border-radius:8px;background:rgba(255,255,255,.06);
    color:#e0e0e8;font-size:15px;font-weight:600;
    font-family:system-ui,sans-serif;cursor:pointer;
    -webkit-tap-highlight-color:transparent;
  }
  .term-mobile-keybar button:active{background:rgba(99,132,255,.35);transform:scale(.96)}

  /* ── 移动端终端粘贴兜底输入框 ───────────── */
  .mobile-paste-overlay{position:fixed;inset:0;z-index:12000;background:rgba(0,0,0,.45);display:flex;align-items:flex-end;justify-content:center;padding:12px;backdrop-filter:blur(8px)}
  .mobile-paste-box{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:18px 18px 0 0;padding:16px;box-shadow:0 -12px 36px rgba(0,0,0,.35)}
  .mobile-paste-title{font-size:16px;font-weight:700;color:var(--text);margin-bottom:6px}
  .mobile-paste-hint{font-size:12px;color:var(--text3);margin-bottom:10px}
  .mobile-paste-textarea{width:100%;min-height:120px;max-height:36vh;resize:vertical;border:1px solid var(--border);border-radius:12px;background:var(--bg2);color:var(--text);font-size:16px;line-height:1.6;padding:12px;outline:none;user-select:text;-webkit-user-select:text}
  .mobile-paste-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:12px}
  .mobile-paste-actions button{min-height:44px;padding:0 18px;border:none;border-radius:10px;background:#3a3a45;color:#ddd;font-weight:600}
  .mobile-paste-actions button[data-act="send"]{background:#3884ff;color:#fff}

  /* ── 弹性滚动容器的 iOS 效果 ────────────── */
  .sidebar, .chat-area, .tab-panel, .file-tree,
  .editor-textarea, .editor-preview, .virtual-viewer,
  .modal, .conv-list{-webkit-overflow-scrolling:touch}

  /* ── 其他杂项 ────────────────────────────── */
  .plan-card{margin:8px 10px;border-radius:12px}
  .plan-header{padding:12px 16px}.plan-body{padding:12px 16px}
  .plan-actions{padding:10px 16px;flex-wrap:wrap;gap:8px}
  .upload-preview{padding:8px 0;gap:6px}.up-item{max-width:100%;padding:8px 12px}
  .tree-more-btn{min-height:44px;min-width:44px;display:flex;align-items:center;justify-content:center}
}

/* ── Tablet 中间断点 (769-900px) ───────────────────────────── */
@media(min-width:769px) and (max-width:900px){
  .chat-area{max-width:100%}
  .msg-wrapper{padding:0 16px}.msg-bubble{max-width:85%}.input-area{padding:0 16px 16px}
  .modal,.modal-wide{width:94vw}
}

/* ── PC 端：永远隐藏移动端专属元素 ──────────────────────────── */
.mobile-tab-bar{display:none}
@media(max-width:768px){.mobile-tab-bar{display:flex}}

/* ── 桌面端断点（保留原逻辑） ────────────────────────────────── */
@media(min-width:901px){:root{--w:400px}}
@media(max-width:900px){:root{--w:300px}.sidebar-overlay.show{display:block}}#tree-dropdown{background:#1e1e2e;border:1px solid #3a3a4a;border-radius:12px;min-width:210px;box-shadow:0 12px 40px rgba(0,0,0,.6);overflow:hidden;animation:dd-in .12s ease-out}@keyframes dd-in{from{opacity:0;transform:translateY(-6px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}.dd-header{display:flex;align-items:center;gap:10px;padding:12px 14px;border-bottom:1px solid #2e2e3e;background:#181825}.dd-icon{font-size:22px;flex-shrink:0}.dd-title-wrap{overflow:hidden}.dd-title{font-size:14px;font-weight:600;color:#e8e8f0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:160px}.dd-sub{font-size:11px;color:#777;margin-top:2px}.dd-body{padding:6px 8px;background:#1e1e2e}.dd-item{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:6px;cursor:pointer;font-size:13px;color:#ccc;transition:background .1s}.dd-item:hover{background:#2a2a3c}.dd-item-icon{width:18px;text-align:center;flex-shrink:0;font-size:14px}.dd-item.paste{color:#a78bfa}.dd-item.paste:hover{background:rgba(108,92,231,.2)}.dd-item.danger{color:#e88}.dd-item.danger:hover{background:rgba(231,76,60,.2);color:#f66}.dd-item.disabled{color:#555;cursor:default;pointer-events:none}.dd-divider{height:1px;background:#2e2e3e;margin:4px 10px}.tree-more-btn{display:none;margin-left:auto;background:0 0;border:none;color:#888;cursor:pointer;font-size:16px;line-height:1;padding:0 6px;border-radius:4px;flex-shrink:0}.tree-item:hover .tree-more-btn{display:inline-block}.tree-more-btn:hover{background:rgba(255,255,255,.1);color:#fff}.tree-item.dragging{opacity:.4}.tree-item.drag-over{outline:2px solid #6c5ce7;outline-offset:-2px;background:rgba(108,92,231,.15)!important;border-radius:4px}.tree-item.drag-invalid{outline:2px dashed #e74c3c;outline-offset:-2px}#file-tree.drag-root-over{outline:2px dashed #6c5ce7;outline-offset:-4px;border-radius:6px}.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:10000}.modal-box{background:#252530;border:1px solid #3a3a4a;border-radius:10px;padding:20px 24px;min-width:360px;max-width:500px}.modal-box h3{margin:0 0 6px;font-size:15px}.modal-box .hint{font-size:12px;color:#999;margin-bottom:12px}.modal-box input{width:100%;padding:8px 10px;border-radius:6px;border:1px solid #3a3a4a;background:#1a1a24;color:#ddd;font-size:14px;box-sizing:border-box}.modal-box .modal-actions{margin-top:14px;display:flex;gap:8px;justify-content:flex-end}.modal-box .modal-actions button{padding:7px 16px;border-radius:6px;border:none;cursor:pointer;font-size:13px}.modal-box .btn-ok{background:#6c5ce7;color:#fff}.modal-box .btn-cancel{background:#444;color:#ccc}
.dd-input{width:100%;padding:7px 10px;border-radius:6px;border:1px solid #3a3a4a;background:#14141e;color:#ddd;font-size:13px;box-sizing:border-box}.dd-input:focus{outline:none;border-color:#6c5ce7}.dd-btn-ok{padding:6px 16px;border-radius:6px;border:none;cursor:pointer;font-size:12px;background:#6c5ce7;color:#fff}.dd-btn-ok:hover{background:#7c6cf7}.dd-btn-cancel{padding:6px 14px;border-radius:6px;border:none;cursor:pointer;font-size:12px;background:#333;color:#bbb}.dd-btn-cancel:hover{background:#444}
.sc-item{display:flex;align-items:center;gap:10px;padding:8px 14px;cursor:pointer;font-size:13px;color:#ccc;transition:background .08s}.sc-item.active,.sc-item:hover{background:#2a2a3c}.sc-name{font-weight:600;color:#a78bfa;min-width:80px;flex-shrink:0}.sc-desc{color:#888;font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.upload-btn{background:0 0;border:none;color:#888;cursor:pointer;padding:6px 8px;border-radius:6px;flex-shrink:0;transition:.15s}.upload-btn:hover{color:#ccc;background:rgba(255,255,255,.08)}.upload-preview{display:flex;gap:8px;padding:8px 0;flex-wrap:wrap}.up-item{display:flex;align-items:center;gap:6px;background:#252530;border-radius:8px;padding:6px 10px;font-size:12px;max-width:220px}.up-thumb{width:36px;height:36px;object-fit:cover;border-radius:4px}.up-icon{font-size:20px}.up-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#ccc;flex:1}.up-remove{background:0 0;border:none;color:#888;cursor:pointer;font-size:14px;padding:0 2px}.up-remove:hover{color:#e74c3c}.chat-area.drag-over{outline:2px dashed #6c5ce7;outline-offset:-4px;border-radius:8px}
.sidebar-toggle-btn{position:fixed;left:0;top:50%;transform:translateY(-50%);z-index:500;width:22px;height:52px;background:linear-gradient(180deg,rgba(99,102,241,.12),rgba(139,92,246,.08));border:1px solid rgba(99,102,241,.25);border-left:none;border-radius:0 10px 10px 0;cursor:pointer;color:#818cf8;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(8px);transition:left .25s cubic-bezier(.4,0,.2,1)}.sidebar-toggle-btn:hover{background:linear-gradient(180deg,rgba(99,102,241,.22),rgba(139,92,246,.15));border-color:rgba(129,140,248,.5);color:#a5b4fc;box-shadow:0 0 16px rgba(99,102,241,.3)}.sidebar-toggle-btn svg{transition:transform .3s}.sidebar-toggle-btn.pushed{left:calc(var(--w) - 4px)}.sidebar-toggle-btn.pushed svg{transform:rotate(180deg)}
.sidebar-resize{position:fixed;top:0;height:100vh;width:6px;cursor:col-resize;z-index:499}.sidebar-resize::after{content:'';position:absolute;left:2px;top:0;width:2px;height:100%;background:transparent;border-radius:2px;transition:background .2s}.sidebar-resize:hover::after,.sidebar-resize.active::after{background:var(--accent)}.sidebar-resize::after{content:'';position:absolute;left:2px;top:0;width:2px;height:100%;background:transparent;border-radius:2px;transition:background .2s}.sidebar-resize:hover::after,.sidebar-resize.active::after{background:var(--accent)}.sidebar-resize::after{content:'';position:absolute;left:2px;top:0;width:2px;height:100%;background:transparent;border-radius:1px;transition:background .2s}.sidebar-resize:hover::after,.sidebar-resize.active::after{background:var(--accent)}
.up-progress-wrap{display:flex;align-items:center;gap:10px;background:#1e1e2e;border-radius:8px;padding:8px 14px;width:100%;max-width:300px}.up-progress-bar{height:4px;background:var(--accent);border-radius:2px;transition:width .15s;flex:1}.up-progress-text{font-size:12px;color:var(--text2);min-width:36px;text-align:right}

/* Floating upload-progress overlay (file tree ⋯ → 上传文件) */
.up-overlay{position:fixed;bottom:24px;right:24px;z-index:10001;background:#1e1e2e;color:#e8e8f0;border:1px solid #3a3a4a;border-radius:10px;padding:12px 16px;min-width:280px;max-width:380px;box-shadow:0 8px 24px rgba(0,0,0,.4);font-size:13px;animation:up-overlay-in .2s ease-out}.up-overlay-title{font-weight:600;margin-bottom:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#e8e8f0}.up-overlay-bar{height:6px;background:#2a2a3c;border-radius:3px;overflow:hidden;margin-bottom:6px}.up-overlay-fill{height:100%;width:0;background:linear-gradient(90deg,#6c5ce7,#a78bfa);border-radius:3px;transition:width .15s ease-out}.up-overlay.up-ok .up-overlay-fill{background:linear-gradient(90deg,#10b981,#34d399)}.up-overlay.up-err .up-overlay-fill{background:linear-gradient(90deg,#ef4444,#f87171)}.up-overlay-meta{display:flex;justify-content:space-between;font-size:11px;color:#999;font-family:ui-monospace,monospace}.up-overlay.up-ok .up-overlay-title{color:#10b981}.up-overlay.up-err .up-overlay-title{color:#ef4444}@keyframes up-overlay-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* ═══════════════════════════════════════════════════
   Plan Mode
   ═══════════════════════════════════════════════════ */
.plan-mode-btn{background:0 0;border:none;color:#888;cursor:pointer;padding:6px 8px;border-radius:6px;flex-shrink:0;transition:.15s}
.plan-mode-btn:hover{color:#ccc;background:rgba(255,255,255,.08)}
.plan-mode-btn.active{color:#f59e0b;background:rgba(245,158,11,.15)}
.plan-card{background:linear-gradient(135deg,#1e1b2e,#232040);border:1px solid #4a3f7a;border-radius:14px;margin:12px 0;overflow:hidden;animation:plan-in .3s ease-out}
@keyframes plan-in{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
.plan-header{display:flex;align-items:center;gap:8px;padding:12px 16px;background:rgba(108,92,231,.1);border-bottom:1px solid rgba(108,92,231,.2)}
.plan-icon{font-size:20px}
.plan-title{font-weight:600;font-size:14px;color:#c4b5fd;flex:1}
.plan-usage{font-size:11px;color:#888}
.plan-body{padding:16px;max-height:300px;overflow-y:auto}
.plan-content{font-size:13px;line-height:1.6;color:#ccc}
.plan-edit-area textarea{width:100%;min-height:150px;background:#14141e;border:1px solid #3a3a4a;border-radius:8px;color:#ddd;font-size:13px;padding:12px;resize:vertical;font-family:inherit}
.plan-actions{display:flex;gap:8px;padding:12px 16px;border-top:1px solid rgba(108,92,231,.15);background:rgba(0,0,0,.2)}
.plan-btn{padding:7px 16px;border-radius:8px;border:none;cursor:pointer;font-size:13px;font-weight:500;transition:.15s}
.plan-btn-edit{background:#333;color:#ccc}.plan-btn-edit:hover{background:#444}
.plan-btn-execute{background:linear-gradient(135deg,#6c5ce7,#8b5cf6);color:#fff}.plan-btn-execute:hover{background:linear-gradient(135deg,#7c6cf7,#9b6cf6)}
.plan-btn-cancel{background:0 0;color:#888}.plan-btn-cancel:hover{color:#e74c3c}
.plan-executing,.plan-done,.plan-error{font-size:14px;padding:6px 0}
.plan-done{color:#4ade80}
.plan-error{color:#f87171}

/* ═══════════════════════════════════════════════════
   Thinking Dots & Error Display
   ═══════════════════════════════════════════════════ */
.thinking-dots{color:#888;font-size:14px}
.thinking-dots span{animation:dot-blink 1.4s infinite;opacity:0}
.thinking-dots span:nth-child(2){animation-delay:.2s}
.thinking-dots span:nth-child(3){animation-delay:.4s}
@keyframes dot-blink{0%,20%{opacity:0}50%{opacity:1}100%{opacity:0}}
.chat-error{color:#f87171;font-size:13px;padding:8px 12px;margin:4px 0;background:rgba(248,113,113,.1);border-radius:8px;border:1px solid rgba(248,113,113,.2)}

/* ═══════════════════════════════════════════════════
   Token Usage Display
   ═══════════════════════════════════════════════════ */
.token-usage{display:flex;gap:14px;font-size:12px;color:#888;padding:8px 0 0;margin-top:8px;border-top:1px solid rgba(255,255,255,.06)}
.token-usage .tu-item{display:flex;align-items:center;gap:4px}
.token-usage .tu-label{font-size:10px;color:#555;text-transform:uppercase;letter-spacing:.5px}

/* ── Xterm.js terminal embed ───────────────────────────────── */
/* (base .tab-panel rules handle display:none / display:flex) */
#panel-terminal{flex-direction:column;overflow:hidden}
#panel-terminal.active{display:flex}
.terminal-wrap{flex:1;display:flex;overflow:hidden;padding:8px 48px 0 48px;max-width:1800px;margin:0 auto;width:100%;position:relative}
.terminal-wrap #term{flex:1;overflow:hidden}
/* Mobile scroll: xterm sets overflow-y:scroll on the viewport, but on
   iOS Safari the default touch-action:manipulation swallows single-finger
   pan inside an absolute-positioned element. Declaring pan-y restores
   native scroll with iOS momentum. No JS bridge needed. */
.terminal-wrap .xterm-viewport{
  touch-action:pan-y;
  -webkit-overflow-scrolling:touch;
  overscroll-behavior:contain;
  /* Hide scrollbar visually — scroll itself still works (touch + wheel). */
  scrollbar-width:none;            /* Firefox */
  -ms-overflow-style:none;         /* legacy Edge/IE */
}
.terminal-wrap .xterm-viewport::-webkit-scrollbar{width:0;height:0}
.terminal-wrap .xterm-viewport::-webkit-scrollbar-thumb,
.terminal-wrap .xterm-viewport::-webkit-scrollbar-track{background:transparent}
/* xterm v6 draws its own vscode-style scrollbar inside .xterm-scrollable-element.
   Don't display:none it — that breaks xterm's own scroll math and the lower
   rows get clipped. Just make it visually invisible (0-opacity, 0-width) and
   let xterm continue to think it's there. Wheel/touch/keyboard still scroll. */
.terminal-wrap .xterm-scrollable-element > .scrollbar{
  opacity:0 !important;
  pointer-events:none !important;
}
.terminal-wrap .xterm-scrollable-element > .scrollbar.vertical{width:0 !important}
.terminal-wrap .xterm-scrollable-element > .scrollbar.horizontal{height:0 !important}
.terminal-wrap .xterm-scrollable-element > .shadow{display:none !important}
/* Pin the hidden textarea xterm uses for IME composition. Without this,
   typing Pinyin/Wubi makes the IME popup appear at page-right and the
   page shifts horizontally as the textarea grows a scrollbar. */
.terminal-wrap .xterm-helper-textarea{
  position:absolute !important;
  overflow:hidden !important;
  resize:none !important;
  width:1px !important;
  height:1px !important;
  white-space:nowrap !important;
}
/* Lock the screen layer so it can't grow horizontally either */
.terminal-wrap .xterm-screen{overflow:hidden !important}

/* ═══════════════════════════════════════════════════
   会话重开进度条（resume claude -r 回放期间显示）
   ═══════════════════════════════════════════════════ */
.restore-progress{
  position:absolute;top:0;left:0;right:0;z-index:50;
  display:flex;flex-direction:column;align-items:center;gap:8px;
  padding:16px 16px 12px;
  background:linear-gradient(180deg,var(--bg) 55%,rgba(255,253,250,0));
  pointer-events:none;animation:restoreFadeIn .2s ease-out;
}
@keyframes restoreFadeIn{from{opacity:0}to{opacity:1}}
.restore-progress-bar{
  width:min(260px,70%);height:4px;border-radius:2px;
  background:var(--border);overflow:hidden;position:relative;
}
.restore-progress-bar::after{
  content:'';position:absolute;top:0;left:-40%;height:100%;width:40%;
  border-radius:2px;background:var(--accent);
  animation:restoreSlide 1.1s cubic-bezier(.4,0,.2,1) infinite;
}
@keyframes restoreSlide{0%{left:-40%}100%{left:100%}}
.restore-progress-text{font-size:12px;color:var(--text2);letter-spacing:.2px}

/* ═══════════════════════════════════════════════════
   Permission Dialog
   ═══════════════════════════════════════════════════ */
.perm-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;z-index:10001;animation:perm-fade-in .15s}
@keyframes perm-fade-in{from{opacity:0}to{opacity:1}}
.perm-dialog{background:#252530;border:1px solid #3a3a4a;border-radius:14px;padding:20px 24px;min-width:380px;max-width:480px;box-shadow:0 20px 60px rgba(0,0,0,.5)}
.perm-dialog h3{font-size:16px;margin:0 0 4px;color:#e8e8f0}
.perm-dialog .perm-hint{font-size:12px;color:#999;margin-bottom:14px}
.perm-dialog .perm-tool-name{font-family:monospace;background:#1a1a24;padding:2px 8px;border-radius:4px;color:#c4b5fd}
.perm-dialog .perm-args{font-size:12px;color:#777;margin:8px 0;max-height:80px;overflow-y:auto;background:#1a1a24;padding:8px 10px;border-radius:6px}
.perm-dialog .perm-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:16px}
.perm-dialog .perm-actions button{padding:7px 16px;border-radius:8px;border:none;cursor:pointer;font-size:13px;transition:.15s}
.perm-btn-deny{background:#3a1a1a;color:#f87171}.perm-btn-deny:hover{background:#4a2a2a}
.perm-btn-once{background:#333;color:#ccc}.perm-btn-once:hover{background:#444}
.perm-btn-always{background:linear-gradient(135deg,#6c5ce7,#8b5cf6);color:#fff}.perm-btn-always:hover{background:linear-gradient(135deg,#7c6cf7,#9b6cf6)}

/* ═══════════════════════════════════════════════════
   Session Resume Banner
   ═══════════════════════════════════════════════════ */
.session-resume-banner{background:rgba(108,92,231,.12);border:1px solid rgba(108,92,231,.25);border-radius:10px;padding:10px 16px;margin:8px 0;display:flex;align-items:center;gap:10px;font-size:13px;animation:slide-down .2s ease-out}
@keyframes slide-down{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}
.session-resume-banner .resume-text{color:#c4b5fd;flex:1}
.session-resume-banner button{padding:5px 12px;border-radius:6px;border:none;cursor:pointer;font-size:12px;transition:.15s}
.resume-btn-restore{background:#6c5ce7;color:#fff}.resume-btn-restore:hover{background:#7c6cf7}
.resume-btn-dismiss{background:0 0;color:#888}.resume-btn-dismiss:hover{color:#e74c3c}

/* ═══════════════════════════════════════════════════
   MCP Management Panel
   ═══════════════════════════════════════════════════ */
.mcp-server-card{background:#1e1e2e;border:1px solid #2e2e3e;border-radius:10px;padding:12px 14px;margin:8px 0;transition:.2s}
.mcp-server-card.running{border-color:rgba(74,222,128,.3);background:rgba(74,222,128,.05)}
.mcp-server-header{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.mcp-status-dot{width:8px;height:8px;border-radius:50%;background:#666}
.mcp-status-dot.running{background:#4ade80;box-shadow:0 0 6px rgba(74,222,128,.5)}
.mcp-server-name{font-weight:600;font-size:14px;color:#e8e8f0;flex:1}
.mcp-server-type{font-size:10px;background:#2a2a3c;padding:2px 6px;border-radius:4px;color:#888}
.mcp-server-config code{font-size:11px;color:#999;word-break:break-all}
.mcp-server-tools{font-size:11px;color:#888;margin-top:4px}
.mcp-server-actions{display:flex;gap:6px;margin-top:8px}
.mcp-btn{padding:4px 12px;border-radius:6px;border:none;cursor:pointer;font-size:11px;transition:.15s}
.mcp-btn-start{background:rgba(74,222,128,.15);color:#4ade80}.mcp-btn-start:hover{background:rgba(74,222,128,.25)}
.mcp-btn-stop{background:rgba(248,113,113,.15);color:#f87171}.mcp-btn-stop:hover{background:rgba(248,113,113,.25)}
.mcp-btn-delete{background:0 0;color:#666}.mcp-btn-delete:hover{color:#e74c3c}
.mcp-form{display:flex;flex-direction:column;gap:8px}
.mcp-label{font-size:12px;color:#999;font-weight:500}
.mcp-input{width:100%;padding:7px 10px;border-radius:6px;border:1px solid #3a3a4a;background:#1a1a24;color:#ddd;font-size:13px;box-sizing:border-box}
.mcp-input:focus{outline:none;border-color:#6c5ce7}

/* ═══════════════════════════════════════════════════
   Cron Task Panel
   ═══════════════════════════════════════════════════ */
.cron-task-card{background:#1e1e2e;border:1px solid #2e2e3e;border-radius:10px;padding:12px 14px;margin:8px 0}
.cron-task-card.active{border-color:rgba(74,222,128,.3)}
.cron-task-card.paused{border-color:rgba(251,191,36,.3);opacity:.7}
.cron-task-header{display:flex;align-items:center;gap:8px;margin-bottom:4px}
.cron-status-dot{width:8px;height:8px;border-radius:50%;background:#666;flex-shrink:0}
.cron-status-dot.success{background:#4ade80}
.cron-status-dot.error{background:#f87171}
.cron-task-subject{font-weight:600;font-size:14px;color:#e8e8f0;flex:1}
.cron-task-cron{font-family:monospace;font-size:11px;background:#2a2a3c;padding:2px 6px;border-radius:4px;color:#c4b5fd}
.cron-task-prompt{font-size:12px;color:#888;margin:4px 0}
.cron-task-meta{font-size:11px;color:#666}
.cron-task-actions{display:flex;gap:6px;margin-top:8px}
.cron-btn{padding:4px 12px;border-radius:6px;border:none;cursor:pointer;font-size:11px;transition:.15s}
.cron-btn-start{background:rgba(74,222,128,.15);color:#4ade80}.cron-btn-start:hover{background:rgba(74,222,128,.25)}
.cron-btn-pause{background:rgba(251,191,36,.15);color:#fbbf24}.cron-btn-pause:hover{background:rgba(251,191,36,.25)}
.cron-btn-log{background:rgba(99,102,241,.15);color:#818cf8}.cron-btn-log:hover{background:rgba(99,102,241,.25)}
.cron-btn-delete{background:0 0;color:#666}.cron-btn-delete:hover{color:#e74c3c}
.cron-form{display:flex;flex-direction:column;gap:8px}
.cron-label{font-size:12px;color:#999;font-weight:500}
.cron-input{width:100%;padding:7px 10px;border-radius:6px;border:1px solid #3a3a4a;background:#1a1a24;color:#ddd;font-size:13px;box-sizing:border-box}
.cron-input:focus{outline:none;border-color:#6c5ce7}
.cron-examples{display:flex;gap:4px;flex-wrap:wrap;align-items:center;font-size:11px;color:#888}
.cron-preset{background:#2a2a3c;border:none;color:#999;padding:2px 8px;border-radius:4px;cursor:pointer;font-size:11px}.cron-preset:hover{background:#3a3a4c;color:#ccc}
.cron-log-view{max-height:300px;overflow-y:auto;background:#1a1a24;border-radius:8px;padding:10px 14px;font-size:12px;color:#aaa;white-space:pre-wrap;word-break:break-all}

/* ══════════════════════════════════════════════════════════════
   Login page variables（原 style.css 仅 login.html 使用，已并入此处）
   采用 Claude.ai 暖色调，与登录页内联 <style> 配合。
   ══════════════════════════════════════════════════════════════ */
:root{
  --bg-primary:#FAFAF8; --bg-secondary:#F5F4F0; --bg-input:#FFFFFF;
  --text-primary:#1A1A18; --text-secondary:#6B6B63;
  --border-medium:#D4D2CA;
  --accent:#D97706; --accent-light:#FEF3C7;
  --shadow-lg:0 4px 16px rgba(0,0,0,0.08);
  --radius-md:10px; --radius-lg:16px;
  --transition:180ms ease;
}
[data-theme="dark"]{
  --bg-primary:#1A1A18; --bg-secondary:#242420; --bg-input:#242420;
  --text-primary:#EDEBE6; --text-secondary:#A3A39B;
  --border-medium:#444438;
  --shadow-lg:0 4px 16px rgba(0,0,0,0.4);
}
