.app-shell{min-height:100vh;background-color:var(--bg);color:var(--text)}.topbar{position:sticky;top:0;z-index:20;height:64px;display:flex;justify-content:space-between;align-items:center;padding:0 1rem;border-bottom:1px solid var(--border);background-color:var(--panel)}.topbar-left{display:flex;align-items:center;gap:.75rem}.topbar-left h1{margin:0;font-size:1.2rem}.layout{display:flex;min-height:calc(100vh - 64px)}.sidebar{width:240px;border-right:1px solid var(--border);background-color:var(--panel);padding:1rem .75rem}.nav-item{width:100%;text-align:left;border:0;border-radius:10px;background:transparent;color:var(--text);padding:.6rem .75rem;cursor:pointer}.nav-item:hover{background-color:var(--hover)}.content{flex:1;padding:1rem}.section-divider{margin:1rem 0}.menu-toggle{display:none}.icon-button{appearance:none;-webkit-appearance:none;border:0!important;background:transparent!important;box-shadow:none!important;color:var(--text);display:inline-flex;align-items:center;justify-content:center;padding:.25rem;border-radius:0;cursor:pointer}.icon-button:hover{opacity:.8}.icon-button:focus,.icon-button:focus-visible,.icon-button:active{border:0!important;background:transparent!important;box-shadow:none!important;outline:none}.mobile-backdrop{display:none}@media (max-width: 768px){.menu-toggle{display:inline-flex}.sidebar{position:fixed;top:64px;left:0;bottom:0;transform:translate(-100%);transition:transform .2s ease;z-index:30}.sidebar.open{transform:translate(0)}.mobile-backdrop{display:block;position:fixed;inset:64px 0 0;z-index:25;border:0;background:rgba(0,0,0,.35)}}:root{--bg: #f6f7fb;--panel: #ffffff;--text: #1f2937;--border: #e5e7eb;--hover: #f3f4f6}:root[data-theme=dark]{--bg: #0f172a;--panel: #111827;--text: #e5e7eb;--border: #1f2937;--hover: #1f2937}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg);color:var(--text)}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}