@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--bg: #f8fafc;--surface: #ffffff;--border: #e2e8f0;--text: #0f172a;--text-muted: #64748b;--primary: #4f46e5;--primary-hover: #4338ca;--danger: #ef4444;--accent: #f59e0b;--radius: 12px;--font: "Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;font-family:var(--font);background-color:var(--bg);color:var(--text);height:100vh;overflow:hidden}.app-layout{display:flex;height:100vh}.sidebar{width:280px;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:20px 16px;z-index:10}.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:1.1rem;margin-bottom:32px;padding-left:8px}.brand-icon{background:var(--primary);color:#fff;width:28px;height:28px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:800}.nav-menu{display:flex;flex-direction:column;gap:4px;flex:1}.nav-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border:none;background:transparent;color:var(--text-muted);font-size:.95rem;font-weight:500;border-radius:var(--radius);cursor:pointer;transition:all .2s;text-align:left}.nav-item svg{width:20px;height:20px}.nav-item:hover{background:var(--bg);color:var(--text)}.nav-item.active{background:#eef2ff;color:var(--primary);font-weight:600}.sidebar-bottom{border-top:1px solid var(--border);padding-top:16px;margin-top:auto}.ai-controls{display:flex;flex-direction:column;gap:8px}.ai-controls label{font-size:.8rem;font-weight:600;text-transform:uppercase;color:var(--text-muted);letter-spacing:.5px}select{padding:8px;border-radius:8px;border:1px solid var(--border);background:var(--surface);font-family:var(--font);font-size:.85rem;outline:none;max-width:100%}.ai-buttons{display:flex;gap:8px}button{cursor:pointer;font-family:var(--font);font-size:.9rem;font-weight:600;border-radius:8px;border:none;padding:8px 16px;transition:all .2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}.btn-outline:hover{background:var(--bg)}.btn-danger{background:#fee2e2;color:var(--danger)}.btn-danger:hover{background:#fecaca}progress{width:100%;height:6px;accent-color:var(--primary)}.status-text{font-size:.8rem;color:var(--text-muted);line-height:1.4}.main-content{flex:1;position:relative;overflow:hidden}section{width:100%;height:100%;padding:32px;overflow-y:auto;animation:fadeIn .2s ease}section#chat{padding:0;overflow:hidden}@keyframes fadeIn{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}h2{margin:0;font-size:1.5rem;letter-spacing:-.5px}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.mt-2{margin-top:16px}.muted{color:var(--text-muted);font-size:.9rem}.divider{width:1px;height:24px;background:var(--border);margin:0 8px}input[type=text],input:not([type]),textarea{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius);font-family:var(--font);font-size:.95rem;outline:none;background:var(--surface)}input:focus,textarea:focus{border-color:var(--primary)}textarea{min-height:200px;resize:vertical;line-height:1.6}.split-pane{display:grid;grid-template-columns:1fr 1fr;gap:16px}.output-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-top:16px;min-height:80px;white-space:pre-wrap;font-family:var(--font);line-height:1.6}.editor-container{display:flex;flex-direction:column;height:calc(100vh - 220px);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:0 1px 3px #0000000d}.toolbar{display:flex;gap:4px;padding:8px 12px;background:#f8fafc;border-bottom:1px solid var(--border)}.toolbar button{background:transparent;border:none;padding:6px 10px;border-radius:4px;color:var(--text-muted);font-weight:500}.toolbar button:hover{background:var(--border);color:var(--text)}.toolbar .divider{margin:6px 4px 0;height:16px}.editor-page-wrap{flex:1;overflow-y:auto;background:#e2e8f0;padding:32px;display:flex;justify-content:center;align-items:flex-start}.editor-page{background:#fff;width:100%;max-width:800px;min-height:100%;padding:60px;box-shadow:0 4px 12px -1px #0000001a;outline:none;font-family:Inter,serif;font-size:1.05rem;line-height:1.8}.editor-page:empty:before{content:attr(placeholder);color:#94a3b8;pointer-events:none;display:block}.editor-page h1{font-size:2rem;margin-top:0}.editor-page h2{font-size:1.5rem}.editor-page hr{border:0;border-top:2px dashed #cbd5e1;margin:32px 0}.chat-wrapper{display:flex;flex-direction:column;height:100%;max-width:900px;margin:0 auto;width:100%}.chat-history{flex:1;overflow-y:auto;padding:32px 24px;display:flex;flex-direction:column;gap:24px;scroll-behavior:smooth}.welcome-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-muted);text-align:center}.welcome-screen h1{font-size:1.8rem;color:var(--text);margin-bottom:8px;letter-spacing:-.5px}.welcome-screen p{font-size:1rem;max-width:400px}.message-row{display:flex;gap:16px;max-width:85%}.message-row.user{align-self:flex-end;flex-direction:row-reverse}.message-row.assistant{align-self:flex-start}.avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.8rem;flex-shrink:0}.user-avatar{background:var(--primary);color:#fff}.ai-avatar{background:#eef2ff;color:var(--primary)}.message-bubble{padding:14px 18px;border-radius:16px;font-size:.95rem;line-height:1.6;overflow-wrap:break-word}.message-row.user .message-bubble{background:var(--primary);color:#fff;border-top-right-radius:4px}.message-row.assistant .message-bubble{background:var(--surface);border:1px solid var(--border);color:var(--text);border-top-left-radius:4px}.message-bubble p{margin:0 0 12px}.message-bubble p:last-child{margin:0}.message-bubble pre{background:#1e293b;color:#f8fafc;padding:12px;border-radius:8px;overflow-x:auto;margin:12px 0}.message-bubble code{font-family:monospace;background:#00000014;padding:2px 4px;border-radius:4px}.message-bubble pre code{background:transparent;padding:0;color:inherit}.chat-input-wrapper{padding:16px 24px;background:var(--bg)}.chat-input-box{background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:0 2px 6px #0000000d;display:flex;align-items:flex-end;padding:8px;transition:border-color .2s,box-shadow .2s}.chat-input-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 2px #4f46e526}.chat-input-box textarea{flex:1;border:none;background:transparent;resize:none;padding:10px 14px;min-height:44px;max-height:200px;font-family:var(--font);font-size:1rem;outline:none}.chat-input-box button{border-radius:12px;padding:10px 18px;margin-bottom:2px;margin-left:8px}@media (max-width: 768px){.app-layout{flex-direction:column}.sidebar{width:100%;border-right:none;border-bottom:1px solid var(--border);padding:12px}.nav-menu{flex-direction:row;overflow-x:auto}.nav-item{white-space:nowrap}.sidebar-bottom{display:none}.split-pane{grid-template-columns:1fr}.editor-page{padding:20px}}