:root{--bg:#040508;--bg-elev:#0a0c10;--bg-card:#0e1014;--fg:#fafafa;--fg-muted:#8b8d93;--fg-subtle:#5a5d63;--accent:#00e5a0;--accent-dim:#00b880;--accent-glow:#00e5a059;--border:#1f2228;--border-bright:#2a2e36;--danger:#ff4757;--warn:#ffa502;--info:#00d4ff;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono:"JetBrains Mono", ui-monospace, monospace;--radius:10px;--radius-sm:6px;--transition:.2s cubic-bezier(.22, 1, .36, 1);--shadow:0 8px 32px #0006;--shadow-lg:0 16px 48px #00000080;--sidebar-w:280px;--topbar-h:56px}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{font-family:var(--font-sans);background:var(--bg);color:var(--fg);-webkit-font-smoothing:antialiased;line-height:1.6;overflow:hidden}a{color:inherit;text-decoration:none}button{cursor:pointer;color:inherit;background:0 0;border:none;font-family:inherit}input,textarea,select{color:inherit;background:0 0;border:none;outline:none;font-family:inherit}::selection{background:var(--accent-glow);color:var(--bg)}.loader{background:var(--bg);z-index:10000;flex-direction:column;justify-content:center;align-items:center;gap:24px;display:flex;position:fixed;inset:0}.loader-inner{text-align:center}.loader-logo{color:var(--accent);animation:2s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.loader-bar{background:var(--border);border-radius:1px;width:120px;height:2px;margin:0 auto;overflow:hidden}.loader-bar span{background:var(--accent);border-radius:1px;width:30%;height:100%;animation:1.5s ease-in-out infinite loadbar;display:block}@keyframes loadbar{0%{transform:translate(-100%)}to{transform:translate(400%)}}.loader-text{letter-spacing:.3em;text-transform:uppercase;color:var(--fg-muted);font-size:13px;font-weight:500}.loader-text .dot{color:var(--accent)}.loader.hidden{opacity:0;pointer-events:none;transition:opacity .4s}.app-shell{height:100vh;display:flex}.sidebar{width:var(--sidebar-w);min-width:var(--sidebar-w);max-width:var(--sidebar-w);background:var(--bg-elev);border-right:1px solid var(--border);z-index:100;flex-direction:column;transition:transform .3s cubic-bezier(.22,1,.36,1);display:flex;position:fixed;top:0;bottom:0;left:0;overflow:hidden}.sidebar.collapsed{transform:translate(-100%)}.sidebar-header{height:var(--topbar-h);border-bottom:1px solid var(--border);align-items:center;padding:0 16px;display:flex}.sidebar-logo{letter-spacing:-.02em;color:var(--fg);opacity:.9;transition:opacity var(--transition);align-items:center;gap:10px;font-size:15px;font-weight:700;display:flex}.sidebar-logo:hover{opacity:1}.logo-icon{color:var(--accent);flex-shrink:0}.logo-text .dot{color:var(--accent)}.sidebar-nav{flex:1;padding:12px 8px;overflow-y:auto}.nav-section{margin-bottom:8px}.nav-section-header{letter-spacing:.1em;text-transform:uppercase;width:100%;color:var(--fg-subtle);border-radius:var(--radius);transition:all var(--transition);text-align:left;background:0 0;justify-content:space-between;align-items:center;padding:10px 12px;font-size:11px;font-weight:700;display:flex}.nav-section-header:hover{background:var(--bg-card);color:var(--fg)}.nav-section-title{flex:1}.nav-section-chevron{transition:transform var(--transition);color:var(--fg-muted);flex-shrink:0}.nav-section-header[aria-expanded=true] .nav-section-chevron{transform:rotate(180deg)}.nav-section-content{max-height:0;transition:max-height .3s cubic-bezier(.22,1,.36,1);overflow:hidden}.nav-section-content.open{max-height:500px}.nav-item{color:var(--fg-muted);border-radius:var(--radius);transition:all var(--transition);align-items:center;gap:10px;margin-bottom:2px;padding:10px 12px;font-size:13px;font-weight:500;display:flex}.nav-item:hover{color:var(--fg);background:var(--bg-card)}.nav-item.active{color:var(--accent);background:var(--accent-glow)}.nav-item svg{flex-shrink:0;width:16px;height:16px}.nav-divider{background:var(--border);height:1px;margin:8px 0}.nav-subtitle{letter-spacing:.15em;text-transform:uppercase;color:var(--fg-subtle);margin:8px 0 4px;padding:0 12px;font-size:10px;font-weight:700;display:block}.model-list{padding:0 4px}.model-item{border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);border:1px solid #0000;align-items:center;gap:10px;margin-bottom:2px;padding:8px 10px;display:flex}.model-item:hover{background:var(--bg-card);border-color:var(--border)}.model-item.active{background:var(--bg-card);border-color:var(--accent-dim)}.model-icon{letter-spacing:.05em;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:10px;font-weight:700;display:flex}.model-info{flex:1;min-width:0}.model-name{white-space:nowrap;text-overflow:ellipsis;font-size:12px;font-weight:600;overflow:hidden}.model-badge{background:var(--border);color:var(--fg-muted);border-radius:16px;padding:1px 6px;font-size:9px;font-weight:600}.model-item.active .model-badge{background:var(--accent-glow);color:var(--accent)}.sidebar-footer{border-top:1px solid var(--border);padding:16px}.new-chat-btn{width:100%;color:var(--fg);background:var(--accent);border-radius:var(--radius);transition:all var(--transition);justify-content:center;align-items:center;gap:8px;padding:12px;font-size:13px;font-weight:600;display:flex}.new-chat-btn:hover{background:var(--accent-dim);box-shadow:0 4px 16px var(--accent-glow);transform:translateY(-1px)}.sidebar-overlay{z-index:99;opacity:0;background:#00000080;transition:opacity .3s;display:none;position:fixed;inset:0}.sidebar-overlay.visible{opacity:1;display:block}.main-content{margin-left:var(--sidebar-w);flex-direction:column;flex:1;min-width:0;transition:margin-left .3s cubic-bezier(.22,1,.36,1);display:flex}.main-content.sidebar-collapsed{margin-left:0}.top-bar{height:var(--topbar-h);background:var(--bg);border-bottom:1px solid var(--border);z-index:50;justify-content:space-between;align-items:center;padding:0 24px;display:flex;position:sticky;top:0}.menu-toggle{flex-direction:column;gap:5px;padding:8px;display:none}.menu-toggle span{background:var(--fg);width:20px;height:2px;transition:var(--transition);border-radius:1px}.top-bar-title{letter-spacing:-.02em;font-size:16px;font-weight:600}.top-bar-actions{align-items:center;gap:12px;display:flex}.status-dot{background:var(--accent);width:8px;height:8px;box-shadow:0 0 8px var(--accent-glow);border-radius:50%;animation:2s ease-in-out infinite blink}@keyframes blink{0%,to{opacity:1}50%{opacity:.5}}.status-text{color:var(--fg-muted);font-size:12px}.view{height:calc(100vh - var(--topbar-h));flex-direction:column;display:none;overflow:hidden}.view.active{animation:.2s fadeIn;display:flex}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}#view-chat{flex-direction:column}.chat-header{border-bottom:1px solid var(--border);background:var(--bg);padding:20px 24px 12px}.chat-header h2{letter-spacing:-.02em;margin-bottom:4px;font-size:18px;font-weight:600}.chat-sub{color:var(--fg-subtle);font-size:13px}.messages{flex-direction:column;flex:1;gap:20px;padding:24px;display:flex;overflow-y:auto}.welcome-msg{text-align:center;color:var(--fg-muted);flex-direction:column;align-items:center;padding:40px 20px;display:flex}.welcome-icon{background:linear-gradient(135deg, var(--bg-card), var(--bg-elev));border:1px solid var(--border);width:80px;height:80px;color:var(--accent);border-radius:20px;justify-content:center;align-items:center;margin-bottom:24px;display:flex}.welcome-msg h1{letter-spacing:-.03em;color:var(--fg);margin-bottom:12px;font-size:32px;font-weight:700}.welcome-msg h1 .dot{color:var(--accent)}.welcome-sub{max-width:480px;margin-bottom:32px;font-size:16px;line-height:1.7}.suggestions{grid-template-columns:repeat(2,1fr);gap:12px;width:100%;max-width:560px;display:grid}.suggestion-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);text-align:left;transition:all var(--transition);cursor:pointer;align-items:center;gap:12px;padding:16px 20px;display:flex}.suggestion-card:hover{border-color:var(--accent-dim);box-shadow:var(--shadow);transform:translateY(-2px)}.sug-icon{font-size:20px}.sug-text{color:var(--fg);font-size:14px;font-weight:500}.msg{gap:12px;animation:.2s msgIn;display:flex}@keyframes msgIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.msg-avatar{border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:10px;font-weight:700;display:flex}.msg-user .msg-avatar{background:var(--border);color:var(--fg-muted)}.msg-ai .msg-avatar{background:linear-gradient(135deg, var(--accent), var(--accent-dim));color:var(--bg)}.msg-content{flex:1;min-width:0}.msg-header{align-items:center;gap:8px;margin-bottom:6px;font-size:12px;display:flex}.msg-role{font-weight:600}.msg-user .msg-role{color:var(--fg)}.msg-ai .msg-role{color:var(--accent)}.msg-time{color:var(--fg-subtle);font-size:11px}.msg-body{color:var(--fg);font-size:14px;line-height:1.7}.msg-body code{font-family:var(--font-mono);background:var(--bg-card);border:1px solid var(--border);border-radius:4px;padding:2px 6px;font-size:13px}.msg-body pre{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);margin:12px 0;padding:16px;overflow-x:auto}.msg-body pre code{background:0 0;border:none;padding:0;font-size:13px;line-height:1.6}.msg-actions{border-top:1px solid var(--border);gap:8px;margin-top:12px;padding-top:12px;display:flex}.msg-action{color:var(--fg-muted);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);transition:var(--transition);align-items:center;gap:6px;padding:8px 12px;font-size:12px;font-weight:500;display:flex}.msg-action:hover{color:var(--fg);border-color:var(--border-bright)}.msg-action.primary{background:var(--accent);color:var(--bg);border-color:#0000}.msg-action.primary:hover{background:var(--accent-dim)}.msg-files{flex-wrap:wrap;gap:8px;margin-bottom:12px;display:flex}.msg-file{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);align-items:center;gap:8px;padding:8px 12px;font-size:12px;display:flex}.msg-file-icon{color:var(--accent)}.typing-indicator{color:var(--fg-muted);align-items:center;gap:4px;padding:12px 0;font-size:13px;display:flex}.typing-dots{gap:3px;display:flex}.typing-dots span{background:var(--accent);border-radius:50%;width:6px;height:6px;animation:1.4s ease-in-out infinite typing}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-6px)}}.upload-preview{flex-wrap:wrap;gap:8px;min-height:0;padding:0 24px 8px;display:flex}.upload-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);align-items:center;gap:8px;padding:6px 10px;font-size:12px;display:flex}.upload-item button{color:var(--fg-subtle);padding:2px}.upload-item button:hover{color:var(--danger)}.chat-input-area{background:var(--bg);border-top:1px solid var(--border);padding:16px 24px}.input-wrapper{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);transition:border-color var(--transition);align-items:flex-end;gap:10px;padding:8px 12px;display:flex}.input-wrapper:focus-within{border-color:var(--accent-dim);box-shadow:0 0 0 2px var(--accent-glow)}.upload-btn{color:var(--fg-muted);border-radius:var(--radius-sm);transition:var(--transition);flex-shrink:0;padding:8px}.upload-btn:hover{color:var(--accent);background:var(--accent-glow)}.chat-input{resize:none;min-height:24px;max-height:180px;color:var(--fg);flex:1;font-size:14px;line-height:1.6}.chat-input::placeholder{color:var(--fg-subtle)}.send-btn{border-radius:var(--radius-sm);background:var(--accent);width:40px;height:40px;color:var(--bg);transition:var(--transition);flex-shrink:0;justify-content:center;align-items:center;display:flex}.send-btn:hover:not(:disabled){background:var(--accent-dim);transform:scale(1.05)}.send-btn:disabled{opacity:.4;cursor:not-allowed}.input-hint{color:var(--fg-subtle);text-align:center;margin-top:10px;font-size:11px}#view-play{flex-direction:column}.play-header{background:var(--bg);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;height:64px;padding:0 24px;display:flex}.play-header-left h2{letter-spacing:-.02em;font-size:18px;font-weight:600}.play-sub{color:var(--fg-subtle);margin-top:2px;font-size:12px}.play-controls{gap:10px;display:flex}.play-btn{color:var(--fg);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);transition:var(--transition);align-items:center;gap:8px;padding:10px 18px;font-size:13px;font-weight:600;display:flex}.play-btn:hover{border-color:var(--accent-dim);color:var(--accent)}.play-btn.primary{background:var(--accent);color:var(--bg);border-color:#0000}.play-btn.primary:hover{background:var(--accent-dim)}.play-btn.small{padding:6px 10px;font-size:11px}.play-layout{height:calc(100% - 64px);display:flex}.code-panel{background:var(--bg-elev);border-right:1px solid var(--border);flex-direction:column;width:400px;min-width:320px;max-width:500px;display:flex}.code-panel-header{border-bottom:1px solid var(--border);align-items:center;gap:4px;padding:12px 16px;display:flex}.code-tab{color:var(--fg-muted);border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);padding:6px 14px;font-size:12px;font-weight:500}.code-tab:hover{color:var(--fg);background:var(--bg-card)}.code-tab.active{color:var(--accent);background:var(--accent-glow)}.code-editor{font-family:var(--font-mono);color:var(--fg);background:var(--bg-elev);resize:none;flex:1;padding:16px;font-size:13px;line-height:1.6}.code-editor.hidden{display:none}.preview-panel{background:var(--bg);flex-direction:column;flex:1;display:flex}.preview-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;height:48px;padding:0 16px;display:flex}.preview-label{color:var(--fg-muted);font-size:13px;font-weight:500}.preview-frame{background:#000;border:none;flex:1;width:100%;height:100%}.preview-frame.fullscreen{z-index:9999;background:var(--bg);position:fixed;inset:0}#view-history{overflow-y:auto}.history-container{height:100%;padding:24px}.history-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.history-header h2{letter-spacing:-.02em;font-size:24px;font-weight:700}.history-list{flex-direction:column;gap:12px;display:flex}.history-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);transition:var(--transition);cursor:pointer;justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.history-item:hover{border-color:var(--border-bright);transform:translate(4px)}.history-item-info{flex-direction:column;gap:4px;min-width:0;display:flex}.history-item-title{white-space:nowrap;text-overflow:ellipsis;font-size:14px;font-weight:500;overflow:hidden}.history-item-meta{color:var(--fg-subtle);align-items:center;gap:12px;font-size:11px;display:flex}.history-item-model{background:var(--border);border-radius:20px;padding:2px 8px;font-weight:600}.history-item-time{white-space:nowrap}.history-item-mode{text-transform:uppercase;font-size:10px;font-weight:600}.history-item-actions{gap:8px;display:flex}.history-item-actions button{color:var(--fg-muted);border-radius:var(--radius-sm);transition:var(--transition);padding:6px}.history-item-actions button:hover{color:var(--danger);background:var(--danger)22}.history-empty{text-align:center;color:var(--fg-subtle);padding:60px 20px}.history-empty svg{opacity:.3;width:64px;height:64px;margin-bottom:16px}#view-settings{padding:24px;overflow-y:auto}.settings-container{max-width:800px;margin:0 auto}.settings-container h2{letter-spacing:-.02em;margin-bottom:24px;font-size:24px;font-weight:700}.settings-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;display:grid}.setting-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.setting-card h3{color:var(--fg);margin-bottom:16px;font-size:14px;font-weight:600}.setting-item{margin-bottom:16px}.setting-item:last-child{margin-bottom:0}.setting-item label{color:var(--fg-muted);margin-bottom:8px;font-size:12px;font-weight:500;display:block}.setting-item select{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--fg);padding:10px 12px;font-size:13px}.setting-desc{color:var(--fg-subtle);margin-bottom:8px;font-size:13px}.setting-desc:last-child{margin-bottom:0}.play-btn.danger{background:var(--danger)22;color:var(--danger);border-color:var(--danger)44}.play-btn.danger:hover{background:var(--danger);color:var(--bg);border-color:#0000}@media (width<=1024px){.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.sidebar-overlay.visible{display:block}.main-content{margin-left:0}.menu-toggle{display:flex}.suggestions{grid-template-columns:1fr}.play-layout{flex-direction:column}.code-panel{border-right:none;border-bottom:1px solid var(--border);width:100%;min-width:0;max-width:none;height:300px}.settings-grid{grid-template-columns:1fr}}@media (width<=640px){.top-bar{padding:0 16px}.chat-header{padding:16px}.chat-input-area{padding:12px 16px}.messages{padding:16px}.welcome-msg h1{font-size:24px}.welcome-sub{font-size:14px}.play-header{padding:0 16px}.preview-header{padding:0 12px}.history-container{padding:16px}.settings-container{padding:0 16px}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);background-clip:content-box;border:2px solid #0000;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--border-bright)}