/* ===== SPACE AI - Complete Theme ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg0:#050508;
  --bg1:#08080e;
  --bg2:#0d0d16;
  --bg3:#12121e;
  --bg4:rgba(255,255,255,0.04);
  --bg5:rgba(255,255,255,0.07);
  --border:rgba(255,255,255,0.07);
  --border2:rgba(255,255,255,0.13);
  --txt1:#e8e8f0;
  --txt2:#7a7a92;
  --txt3:#3e3e55;
  --accent:#7c7cff;
  --accent2:rgba(124,124,255,0.15);
  --accent3:rgba(124,124,255,0.08);
  --glow:rgba(124,124,255,0.35);
  --err:#ff4d6d;
  --ok:#4dffb4;
  --warn:#ffb347;
  --r:14px;
  --rs:9px;
  --rx:5px;
  --font:'Inter',system-ui,sans-serif;
  --mono:'JetBrains Mono','Courier New',monospace;
  --ease:cubic-bezier(.4,0,.2,1);
  --t:.22s;
}

html,body{height:100%;overflow:hidden;background:var(--bg0);font-family:var(--font);color:var(--txt1);-webkit-font-smoothing:antialiased}

/* ===== STARS ===== */
#stars-container{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.star{position:absolute;border-radius:50%;background:#fff;animation:twinkle var(--d,3s) ease-in-out infinite;animation-delay:var(--dl,0s)}
@keyframes twinkle{0%,100%{opacity:.08;transform:scale(1)}50%{opacity:.7;transform:scale(1.4)}}

#app{position:relative;height:100vh;z-index:1;background:
  radial-gradient(ellipse 70% 55% at 85% 45%,rgba(70,70,160,.07) 0%,transparent 65%),
  radial-gradient(ellipse 45% 65% at 5% 85%,rgba(30,30,90,.06) 0%,transparent 60%)}

/* ===== SHARED UTILS ===== */
.hidden{display:none!important}
button{cursor:pointer;font-family:var(--font)}
textarea,input{font-family:var(--font)}
::-webkit-scrollbar{width:4px;height:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.09);border-radius:2px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.16)}
::selection{background:rgba(124,124,255,.3);color:#fff}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideDown{from{opacity:0;transform:translateY(-16px)}to{opacity:1;transform:translateY(0)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.45}}
@keyframes spin{from{transform:rotate(0)}to{transform:rotate(360deg)}}
@keyframes glow{0%,100%{box-shadow:0 0 8px var(--glow)}50%{box-shadow:0 0 22px var(--glow),0 0 40px rgba(124,124,255,.15)}}
@keyframes msgIn{from{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}
@keyframes bounceY{0%,80%,100%{transform:translateY(0);opacity:.35}40%{transform:translateY(-7px);opacity:1}}
@keyframes ripple{to{transform:scale(4);opacity:0}}
@keyframes slideIn{from{opacity:0;transform:translateX(-10px)}to{opacity:1;transform:translateX(0)}}
@keyframes pop{0%{transform:scale(.92)}60%{transform:scale(1.04)}100%{transform:scale(1)}}

/* ===== CHAT MODE ===== */
#chat-mode{display:flex;flex-direction:column;height:100vh;animation:fadeIn .4s ease}

/* Header */
#main-header{
  display:flex;align-items:center;justify-content:center;
  padding:14px 20px;position:relative;z-index:100;
  animation:slideDown .5s var(--ease)
}
.header-pill{
  display:flex;align-items:center;gap:10px;
  background:var(--bg4);border:1px solid var(--border);
  border-radius:50px;padding:7px 14px;
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  transition:border-color var(--t) var(--ease),background var(--t) var(--ease);
}
.header-pill:hover{border-color:var(--border2);background:var(--bg5)}
.conv-title{font-size:13px;font-weight:400;color:var(--txt2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:200px}
.conv-meta{display:flex;align-items:center;gap:8px}
.msg-count{font-size:11px;color:var(--txt3);font-weight:500;min-width:34px;letter-spacing:.4px}
.count-bar{width:55px;height:3px;background:rgba(255,255,255,.07);border-radius:2px;overflow:hidden}
.count-fill{height:100%;background:linear-gradient(90deg,var(--accent),#a0a0ff);border-radius:2px;width:0%;transition:width .4s var(--ease)}
.icon-btn{background:none;border:none;color:var(--txt3);font-size:13px;padding:4px 6px;border-radius:var(--rx);transition:all var(--t) var(--ease);display:flex;align-items:center;justify-content:center}
.icon-btn:hover{color:var(--err);background:rgba(255,77,109,.1);transform:scale(1.1)}

.header-actions{position:absolute;right:20px;top:50%;transform:translateY(-50%);display:flex;gap:8px}
.mode-toggle-btn{
  display:flex;align-items:center;gap:6px;
  background:rgba(124,124,255,.1);border:1px solid rgba(124,124,255,.22);
  border-radius:50px;color:#9898ff;font-size:11px;font-weight:700;letter-spacing:1.4px;
  padding:6px 14px;transition:all var(--t) var(--ease);animation:fadeIn .8s ease;
}
.mode-toggle-btn:hover{background:rgba(124,124,255,.2);border-color:rgba(124,124,255,.45);color:#c0c0ff;transform:translateY(-1px);box-shadow:0 4px 20px rgba(124,124,255,.2)}
.mode-toggle-btn i{font-size:12px}

/* Chat area */
#chat-area{flex:1;overflow-y:auto;overflow-x:hidden;padding:20px 0;position:relative;scroll-behavior:smooth}
#chat-messages{max-width:700px;margin:0 auto;padding:0 20px;display:flex;flex-direction:column;gap:20px}

/* Welcome */
.welcome-prompt{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;pointer-events:none;animation:fadeIn 1s ease}
.try-asking{font-size:13px;color:var(--txt3);margin-bottom:8px;letter-spacing:.5px}
.prompt-suggestion{font-size:15px;color:var(--txt2);max-width:380px;line-height:1.55;transition:opacity .35s ease}

/* Messages */
.message{display:flex;flex-direction:column;gap:5px;animation:msgIn .38s var(--ease)}
.message.user{align-items:flex-end}
.message.assistant,.message.error{align-items:flex-start}
.msg-bubble{padding:11px 15px;border-radius:18px;font-size:14px;line-height:1.65;max-width:88%;word-wrap:break-word;white-space:pre-wrap}
.message.user .msg-bubble{background:var(--bg4);border:1px solid var(--border);border-bottom-right-radius:5px;color:var(--txt1);backdrop-filter:blur(12px)}
.message.assistant .msg-bubble{background:transparent;padding:4px 0;border-radius:0;font-size:14px;color:var(--txt1)}
.message.error .msg-bubble{color:var(--err);font-size:13px;padding:4px 0}
.msg-image{max-width:240px;max-height:180px;border-radius:11px;object-fit:cover;border:1px solid var(--border);margin-bottom:5px}
.msg-actions{display:flex;gap:5px;opacity:0;transition:opacity .2s ease;padding:0 3px}
.message:hover .msg-actions{opacity:1}
.ma-btn{background:none;border:none;color:var(--txt3);font-size:12px;padding:4px 7px;border-radius:var(--rx);transition:all var(--t) var(--ease)}
.ma-btn:hover{color:var(--txt1);background:rgba(255,255,255,.06);transform:scale(1.15)}

/* Markdown */
.msg-bubble strong,.msg-bubble b{font-weight:600;color:#d0d0f0}
.msg-bubble em,.msg-bubble i{color:#b8b8e0;font-style:italic}
.msg-bubble code{background:rgba(255,255,255,.07);padding:2px 7px;border-radius:5px;font-family:var(--mono);font-size:12.5px;border:1px solid rgba(255,255,255,.08)}
.msg-bubble pre{background:rgba(0,0,0,.45);border:1px solid var(--border);border-radius:11px;padding:14px;overflow-x:auto;margin:8px 0}
.msg-bubble pre code{background:none;border:none;padding:0;font-size:12.5px}
.msg-bubble h1,.msg-bubble h2,.msg-bubble h3{color:#d0d0f0;margin:10px 0 5px;font-weight:600}
.msg-bubble h1{font-size:17px}.msg-bubble h2{font-size:15px}.msg-bubble h3{font-size:14px}
.msg-bubble ul,.msg-bubble ol{padding-left:20px;margin:5px 0}
.msg-bubble li{margin:3px 0}
.msg-bubble blockquote{border-left:3px solid var(--accent);padding-left:12px;color:var(--txt2);margin:8px 0;font-style:italic}
.msg-bubble a{color:var(--accent);text-decoration:none}.msg-bubble a:hover{text-decoration:underline}
.msg-bubble hr{border:none;border-top:1px solid var(--border);margin:10px 0}
.msg-bubble table{border-collapse:collapse;width:100%;margin:8px 0;font-size:13px}
.msg-bubble th,.msg-bubble td{border:1px solid var(--border);padding:7px 10px;text-align:left}
.msg-bubble th{background:rgba(255,255,255,.05);font-weight:600}

/* Loading */
.loading-msg{display:flex;align-items:center;gap:8px;color:var(--txt3);font-size:13px;padding:4px 0;animation:fadeIn .3s ease}
.l-dots{display:flex;gap:4px}
.l-dot{width:5px;height:5px;border-radius:50%;background:var(--accent);animation:bounceY 1.2s ease-in-out infinite}
.l-dot:nth-child(2){animation-delay:.2s}.l-dot:nth-child(3){animation-delay:.4s}
.typing-cursor::after{content:'▋';animation:blink .7s step-end infinite;color:var(--accent)}

/* Image preview bar */
#image-preview-bar{padding:0 20px 8px;max-width:700px;margin:0 auto;animation:fadeUp .3s ease}
.img-preview-wrap{position:relative;display:inline-block}
#img-preview{height:76px;width:auto;border-radius:10px;border:1px solid var(--border);object-fit:cover}
#remove-img-btn{position:absolute;top:-6px;right:-6px;width:20px;height:20px;border-radius:50%;background:var(--err);border:none;color:#fff;font-size:9px;display:flex;align-items:center;justify-content:center;transition:transform var(--t)}
#remove-img-btn:hover{transform:scale(1.15)}

/* Input dock */
#input-dock{padding:10px 20px 18px;z-index:50;animation:fadeUp .55s var(--ease)}
.input-row{max-width:700px;margin:0 auto;display:flex;align-items:flex-end;gap:7px;background:var(--bg4);border:1px solid var(--border);border-radius:22px;padding:7px 9px;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);transition:border-color .25s,box-shadow .25s}
.input-row:focus-within{border-color:rgba(124,124,255,.28);box-shadow:0 0 0 3px rgba(124,124,255,.07),0 8px 32px rgba(0,0,0,.5)}
.input-wrap{flex:1;display:flex;align-items:center}
#chat-input{width:100%;background:none;border:none;outline:none;color:var(--txt1);font-size:14px;line-height:1.5;resize:none;min-height:24px;max-height:160px;overflow-y:auto;padding:3px 0}
#chat-input::placeholder{color:var(--txt3)}
.dock-btn{background:none;border:none;color:var(--txt3);font-size:16px;width:33px;height:33px;border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all var(--t) var(--ease);flex-shrink:0;position:relative;overflow:hidden}
.dock-btn:hover{color:var(--txt1);background:rgba(255,255,255,.06);transform:scale(1.1)}
.model-btn{font-size:18px;color:var(--accent)}
.model-btn:hover{color:#b4b4ff;background:var(--accent3)}
.send-btn{color:var(--accent);background:var(--accent3)}
.send-btn:hover{color:#fff;background:var(--accent);box-shadow:0 0 18px var(--glow)}
.send-btn:disabled{opacity:.28;cursor:not-allowed;transform:none}
.upload-btn:hover{color:#80e0ff;background:rgba(128,224,255,.1)}
.cust-btn:hover{color:#c0a0ff;background:rgba(192,160,255,.1)}
.model-dot{position:absolute;bottom:5px;right:5px;width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 6px var(--ok);display:none}
.model-btn.active .model-dot{display:block}

/* Popup */
.popup{position:fixed;bottom:78px;z-index:300;opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s var(--ease)}
.popup.open{opacity:1;pointer-events:all}
#model-popup{left:50%;transform:translateX(calc(-50% - 230px)) translateY(8px);bottom:78px}
#model-popup.open{transform:translateX(calc(-50% - 230px)) translateY(0)}
#cust-popup{right:20px;bottom:78px;transform:translateY(8px)}
#cust-popup.open{transform:translateY(0)}
.popup-inner{background:rgba(10,10,18,.96);border:1px solid var(--border);border-radius:var(--r);backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);box-shadow:0 20px 60px rgba(0,0,0,.8);overflow:hidden;min-width:260px}
.popup-title{font-size:11px;font-weight:700;color:var(--txt2);letter-spacing:1.5px;padding:14px 15px 6px}

/* Model list */
.m-opt{display:flex;align-items:center;gap:10px;padding:10px 14px;font-size:13px;color:var(--txt2);transition:all var(--t) var(--ease);position:relative;cursor:pointer;user-select:none}
.m-opt:hover{background:var(--bg5);color:var(--txt1)}
.m-opt.sel{color:var(--txt1);background:rgba(124,124,255,.07)}
.m-opt.sel::before{content:'';position:absolute;left:0;top:18%;bottom:18%;width:2px;background:var(--accent);border-radius:2px}
.m-icon{width:22px;height:22px;border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;flex-shrink:0;font-family:var(--mono)}
.m-badge{margin-left:auto;font-size:9px;font-weight:700;letter-spacing:.8px;padding:2px 6px;border-radius:3px;background:rgba(77,255,180,.1);color:var(--ok);border:1px solid rgba(77,255,180,.2)}
.m-vis{font-size:9px;color:var(--txt3);margin-left:2px}
.m-divider{height:1px;background:var(--border);margin:3px 0}

/* Customize */
.cust-inner{padding:15px;width:310px}
.cust-inner textarea{width:100%;background:rgba(255,255,255,.03);border:1px solid var(--border);border-radius:var(--rs);color:var(--txt1);font-size:13px;padding:11px;min-height:100px;resize:vertical;outline:none;line-height:1.5;transition:border-color .2s}
.cust-inner textarea:focus{border-color:rgba(124,124,255,.4)}
.cust-inner textarea::placeholder{color:var(--txt3);font-size:12px}
.action-btn{width:100%;margin-top:10px;background:rgba(124,124,255,.1);border:1px solid rgba(124,124,255,.22);border-radius:var(--rs);color:#a0a0ff;font-size:11px;font-weight:700;letter-spacing:2px;padding:10px;transition:all var(--t) var(--ease)}
.action-btn:hover{background:rgba(124,124,255,.2);border-color:rgba(124,124,255,.45);color:#c8c8ff;box-shadow:0 0 20px rgba(124,124,255,.15)}

/* Overlay */
.overlay{position:fixed;inset:0;z-index:200;display:none}
.overlay.on{display:block}

/* Toast */
.toast{position:fixed;bottom:96px;left:50%;transform:translateX(-50%) translateY(12px);background:rgba(12,12,22,.97);border:1px solid var(--border);border-radius:50px;padding:9px 18px;font-size:13px;color:var(--txt1);backdrop-filter:blur(20px);z-index:999;opacity:0;transition:opacity .22s,transform .22s;pointer-events:none;white-space:nowrap}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.ok{border-color:rgba(77,255,180,.3);color:var(--ok)}
.toast.err{border-color:rgba(255,77,109,.3);color:var(--err)}
.toast.info{border-color:rgba(124,124,255,.3);color:#a8a8ff}

/* ===================== CODE MODE ===================== */
#code-mode{display:flex;flex-direction:column;height:100vh;animation:fadeIn .35s ease}

/* Code header */
#code-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 16px;background:var(--bg1);border-bottom:1px solid var(--border);
  z-index:100;flex-shrink:0;
  animation:slideDown .45s var(--ease)
}
.code-header-left{display:flex;align-items:center;gap:10px}
.space-logo{font-size:15px;font-weight:700;color:var(--txt1);letter-spacing:.5px}
.mode-badge{font-size:9px;font-weight:800;letter-spacing:2px;padding:3px 8px;border-radius:4px;background:rgba(124,124,255,.15);color:var(--accent);border:1px solid rgba(124,124,255,.3);animation:pop .4s var(--ease)}
.code-header-center{display:flex;gap:4px}
.tab-btn{background:none;border:1px solid transparent;border-radius:var(--rs);color:var(--txt2);font-size:12px;font-weight:500;padding:6px 14px;display:flex;align-items:center;gap:6px;transition:all var(--t) var(--ease)}
.tab-btn:hover{color:var(--txt1);border-color:var(--border)}
.tab-btn.active{color:var(--txt1);background:var(--bg4);border-color:var(--border2)}
.code-header-right{display:flex;align-items:center;gap:8px}
.run-btn{display:flex;align-items:center;gap:6px;background:rgba(77,255,180,.1);border:1px solid rgba(77,255,180,.25);border-radius:var(--rs);color:var(--ok);font-size:12px;font-weight:600;padding:6px 14px;transition:all var(--t) var(--ease)}
.run-btn:hover{background:rgba(77,255,180,.2);border-color:rgba(77,255,180,.5);box-shadow:0 0 16px rgba(77,255,180,.2);transform:translateY(-1px)}

/* Workspace */
#code-workspace{display:flex;flex:1;overflow:hidden;position:relative}

/* File tree */
#file-tree-panel{
  width:200px;flex-shrink:0;background:var(--bg1);border-right:1px solid var(--border);
  display:flex;flex-direction:column;overflow:hidden;
  animation:slideIn .4s var(--ease)
}
.tree-header{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-bottom:1px solid var(--border);flex-shrink:0}
.tree-header span{font-size:10px;font-weight:700;color:var(--txt3);letter-spacing:1.5px}
.tree-actions{display:flex;gap:4px}
.tree-btn{background:none;border:none;color:var(--txt3);font-size:12px;padding:4px 6px;border-radius:var(--rx);transition:all var(--t) var(--ease)}
.tree-btn:hover{color:var(--txt1);background:var(--bg4)}
#file-tree{flex:1;overflow-y:auto;padding:6px 0}
.file-item{display:flex;align-items:center;gap:8px;padding:7px 14px;font-size:12.5px;color:var(--txt2);cursor:pointer;transition:all var(--t) var(--ease);user-select:none;animation:slideIn .3s var(--ease)}
.file-item:hover{background:var(--bg4);color:var(--txt1)}
.file-item.active{background:var(--accent3);color:var(--txt1)}
.file-item.active::before{content:'';position:absolute;right:0;top:0;bottom:0;width:2px;background:var(--accent);border-radius:2px}
.file-item{position:relative}
.file-icon{font-size:11px;width:14px;text-align:center;flex-shrink:0}
.fi-html{color:#e34c26}.fi-css{color:#264de4}.fi-js{color:#f7df1e}.fi-txt{color:var(--txt2)}.fi-json{color:#5ba85e}

/* Editor panel */
#editor-panel{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--bg0);min-width:0}
#tab-bar{display:flex;background:var(--bg1);border-bottom:1px solid var(--border);overflow-x:auto;flex-shrink:0}
#tab-bar::-webkit-scrollbar{height:2px}
.editor-tab{display:flex;align-items:center;gap:8px;padding:8px 16px;font-size:12px;color:var(--txt2);cursor:pointer;border-right:1px solid var(--border);white-space:nowrap;transition:all var(--t) var(--ease);flex-shrink:0}
.editor-tab:hover{background:var(--bg4);color:var(--txt1)}
.editor-tab.active{background:var(--bg0);color:var(--txt1);border-bottom:2px solid var(--accent)}
.editor-tab .close-tab{opacity:0;font-size:10px;color:var(--txt3);transition:all .15s}
.editor-tab:hover .close-tab{opacity:1}
.editor-tab .close-tab:hover{color:var(--err)}
#editor-wrap{flex:1;overflow:hidden;position:relative}
#code-editor{
  width:100%;height:100%;background:transparent;border:none;outline:none;
  color:#e0e0f8;font-family:var(--mono);font-size:13.5px;line-height:1.7;
  padding:16px 20px;resize:none;tab-size:2;
  caret-color:var(--accent)
}
#code-editor::placeholder{color:var(--txt3)}
#code-editor::-webkit-scrollbar{width:6px;height:6px}

/* Preview */
#preview-panel{flex:1;display:flex;flex-direction:column;background:var(--bg2);animation:fadeIn .3s ease}
.preview-toolbar{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--bg1);border-bottom:1px solid var(--border);flex-shrink:0}
.preview-url{flex:1;font-size:11px;color:var(--txt3);font-family:var(--mono);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;background:rgba(255,255,255,.04);padding:4px 10px;border-radius:var(--rx);border:1px solid var(--border)}
#preview-iframe{flex:1;border:none;background:#fff}

/* Code AI panel */
#code-ai-panel{
  width:300px;flex-shrink:0;background:var(--bg1);border-left:1px solid var(--border);
  display:flex;flex-direction:column;overflow:hidden;
  animation:slideIn .45s var(--ease)
}
#code-ai-messages{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:14px}
.code-ai-input-row{display:flex;align-items:flex-end;gap:7px;padding:10px 10px 12px;border-top:1px solid var(--border);flex-shrink:0;background:var(--bg1)}
#code-ai-input{flex:1;background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:var(--rs);color:var(--txt1);font-size:13px;padding:9px 12px;min-height:38px;max-height:120px;resize:none;outline:none;line-height:1.45;transition:border-color .2s}
#code-ai-input:focus{border-color:rgba(124,124,255,.4)}
#code-ai-input::placeholder{color:var(--txt3);font-size:12px}
.code-msg{animation:msgIn .35s var(--ease)}
.code-msg.user .msg-bubble{background:var(--bg3);border:1px solid var(--border);border-radius:11px;font-size:12.5px}
.code-msg.assistant .msg-bubble{background:transparent;padding:0;font-size:12.5px;color:var(--txt1)}
.code-msg.assistant .msg-bubble pre{font-size:11.5px}
.code-apply-btn{display:flex;align-items:center;gap:6px;background:rgba(77,255,180,.08);border:1px solid rgba(77,255,180,.2);border-radius:var(--rx);color:var(--ok);font-size:11px;font-weight:600;padding:5px 10px;margin-top:6px;transition:all var(--t) var(--ease)}
.code-apply-btn:hover{background:rgba(77,255,180,.15);box-shadow:0 0 12px rgba(77,255,180,.2)}

/* Line numbers overlay for code editor */
#ln-overlay{position:absolute;top:0;left:0;width:44px;bottom:0;pointer-events:none;background:rgba(0,0,0,.2);border-right:1px solid var(--border);overflow:hidden}
.ln-num{display:block;font-family:var(--mono);font-size:13px;line-height:1.7;color:var(--txt3);text-align:right;padding-right:8px;padding-top:16px}

/* Resize cursor */
.resize-handle{width:4px;background:transparent;cursor:col-resize;transition:background .2s;flex-shrink:0}
.resize-handle:hover,.resize-handle.dragging{background:var(--accent)}

/* Code mode AI input model badge */
.code-model-badge{font-size:10px;color:var(--txt3);padding:2px 7px;border-radius:4px;background:var(--bg3);border:1px solid var(--border);white-space:nowrap;align-self:center}

/* Mobile */
@media(max-width:640px){
  #main-header{padding:10px 14px}
  #chat-messages{padding:0 14px}
  #input-dock{padding:8px 14px 14px}
  #model-popup{left:14px;transform:translateY(8px)}
  #model-popup.open{transform:translateY(0)}
  #file-tree-panel{width:160px}
  #code-ai-panel{width:240px}
}