:root{--bg-page: #0f1115;--bg-surface: #161a21;--bg-elevated: #1c212b;--bg-hover: #232a35;--border: #2a303c;--text-primary: #e5e7eb;--text-secondary: #9ca3af;--text-muted: #6b7280;--accent: #3b82f6;--accent-hover: #2563eb;--active-bg: #1e3a5f;--danger-bg: #3a1a1a;--danger-border: #7f2d2d;--danger-text: #fca5a5;--warning-bg: #3a2f10;--warning-border: #92702b;--warning-text: #fcd34d}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;overflow-x:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--text-primary);background:var(--bg-page)}.app{display:flex;flex-direction:column;height:100%}.loading-screen,.empty-state{display:flex;align-items:center;justify-content:center;height:100%;color:var(--text-secondary)}.login-screen{height:100%;display:flex;align-items:center;justify-content:center;background:var(--bg-page);padding:16px}.login-form{background:var(--bg-elevated);padding:32px;border-radius:8px;border:1px solid var(--border);box-shadow:0 8px 24px #0006;width:100%;max-width:340px;display:flex;flex-direction:column;gap:12px}.login-form h1{font-size:1.25rem;margin:0 0 8px;color:var(--text-primary)}.login-form label{display:flex;flex-direction:column;gap:4px;font-size:.85rem;color:var(--text-secondary)}.login-form input{padding:10px;border:1px solid var(--border);border-radius:4px;font-size:1rem;background:var(--bg-surface);color:var(--text-primary)}.login-form input:focus{outline:2px solid var(--accent);outline-offset:-1px}.login-form button,.sso-button{padding:10px;border-radius:4px;border:none;background:var(--accent);color:#fff;font-size:1rem;cursor:pointer;text-align:center;text-decoration:none}.login-form button:hover,.sso-button:hover{background:var(--accent-hover)}.sso-button{background:var(--bg-hover);border:1px solid var(--border)}.login-error{color:var(--danger-text);font-size:.85rem;margin:0}.toolbar{display:flex;align-items:center;gap:12px;padding:8px 12px;background:var(--bg-surface);color:var(--text-primary);border-bottom:1px solid var(--border);min-height:48px}.tree-toggle{background:none;border:none;color:var(--text-primary);font-size:1.1rem;cursor:pointer}.toolbar-path{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.85rem;color:var(--text-secondary)}.view-mode-toggle{padding:6px 14px;border-radius:4px;border:1px solid var(--border);background:none;color:var(--text-primary);cursor:pointer}.view-mode-toggle:hover{background:var(--bg-hover)}.save-button{padding:6px 14px;border-radius:4px;border:none;background:var(--accent);color:#fff;cursor:pointer}.save-button:hover:not(:disabled){background:var(--accent-hover)}.save-button:disabled{background:var(--bg-hover);color:var(--text-muted);cursor:default}.toolbar-user{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--text-secondary)}.toolbar-user button{background:none;border:1px solid var(--border);color:var(--text-secondary);border-radius:4px;padding:4px 8px;cursor:pointer}.toolbar-user button:hover{background:var(--bg-hover);color:var(--text-primary)}.app-body{flex:1;display:flex;min-height:0}.sidebar{width:260px;min-width:200px;max-width:90vw;border-right:1px solid var(--border);background:var(--bg-surface);display:flex;flex-direction:column;overflow-y:auto}.content{flex:1;min-width:0;display:flex;flex-direction:column}.sidebar-actions{display:flex;gap:8px;padding:8px;border-bottom:1px solid var(--border)}.sidebar-actions button{flex:1;padding:6px 8px;border-radius:4px;border:1px solid var(--border);background:none;color:var(--text-primary);font-size:.8rem;cursor:pointer}.sidebar-actions button:hover{background:var(--bg-hover)}.file-tree{flex:1;overflow-y:auto;padding:8px 0}.file-tree-empty{padding:12px;color:var(--text-muted);font-size:.85rem}.tree-node{padding:6px 8px;font-size:.85rem;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text-secondary)}.tree-node:hover{background:var(--bg-hover);color:var(--text-primary)}.tree-file.active{background:var(--active-bg);color:var(--text-primary);font-weight:600}.tree-caret{display:inline-block;transition:transform .15s}.tree-caret.open{transform:rotate(90deg)}.search-box{position:relative;padding:8px;border-bottom:1px solid var(--border)}.search-box input{width:100%;padding:8px;border:1px solid var(--border);border-radius:4px;font-size:.9rem;background:var(--bg-elevated);color:var(--text-primary)}.search-box input:focus{outline:2px solid var(--accent);outline-offset:-1px}.search-results{position:absolute;left:8px;right:8px;top:100%;background:var(--bg-elevated);border:1px solid var(--border);border-radius:4px;max-height:300px;overflow-y:auto;z-index:10;box-shadow:0 8px 24px #0006}.search-result{padding:8px;cursor:pointer;border-bottom:1px solid var(--border)}.search-result:hover{background:var(--bg-hover)}.search-result-path{font-size:.8rem;font-weight:600;color:var(--text-primary)}.search-result-snippet{font-size:.75rem;color:var(--text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.search-empty{padding:8px;font-size:.8rem;color:var(--text-muted)}.split-pane{flex:1;display:flex;min-height:0;background:var(--bg-page)}.split-pane.desktop .pane{flex:1;min-width:0;overflow:auto}.editor-pane{border-right:1px solid var(--border)}.split-pane.mobile{flex-direction:column}.mobile-pane{flex:1;min-height:0;overflow:auto}.split-pane.preview-only{overflow:auto}.preview{padding:16px;overflow-wrap:break-word;color:var(--text-primary);line-height:1.6}.preview a{color:var(--accent)}.preview code{background:var(--bg-elevated);border:1px solid var(--border);border-radius:3px;padding:1px 5px;font-size:.9em}.preview pre{background:var(--bg-elevated);border:1px solid var(--border);border-radius:6px;padding:12px;overflow-x:auto}.preview pre code{background:none;border:none;padding:0}.preview blockquote{margin:0;padding:4px 12px;border-left:3px solid var(--border);color:var(--text-secondary)}.preview hr{border:none;border-top:1px solid var(--border)}.preview th,.preview td{border:1px solid var(--border);padding:6px 10px}.preview table{border-collapse:collapse;max-width:100%;display:block;overflow-x:auto}.preview img{max-width:100%}.conflict-banner{display:flex;align-items:center;gap:10px;padding:10px 14px;background:var(--warning-bg);color:var(--warning-text);border-bottom:1px solid var(--warning-border);font-size:.85rem;flex-wrap:wrap}.conflict-banner button{padding:4px 10px;border-radius:4px;border:1px solid var(--warning-border);background:var(--bg-elevated);color:var(--text-primary);cursor:pointer}.conflict-banner button:hover{background:var(--bg-hover)}.error-banner{padding:10px 14px;background:var(--danger-bg);color:var(--danger-text);border-bottom:1px solid var(--danger-border);font-size:.85rem}@media (max-width: 768px){.sidebar{position:fixed;top:48px;bottom:0;left:0;z-index:20;width:80vw;box-shadow:2px 0 12px #00000080}}