:root{--bg:#070d14;--bg-alt:#0d1521;--panel:#111c2a;--ink:#e6eef8;--muted:#90a4c1;--border:#263549;--accent:#31b8c7;--accent-strong:#3e88ff;--accent-soft:#142536;--button-ink:#03121a}[data-theme=light]{--bg:#edf3fb;--bg-alt:#dfe9f7;--panel:#ffffff;--ink:#102437;--muted:#4c6680;--border:#c4d3e8;--accent:#176fd0;--accent-strong:#0f5cb2;--accent-soft:#e1edf9;--button-ink:#f7fbff}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:radial-gradient(circle at top right,rgba(49,184,199,.2) 0,transparent 36%),radial-gradient(circle at 20% 80%,rgba(62,136,255,.18) 0,transparent 45%),linear-gradient(155deg,var(--bg-alt) 0,var(--bg) 75%);font-family:IBM Plex Sans,Segoe UI,sans-serif;transition:color .18s ease,background .18s ease}.app-shell{min-height:100vh;display:grid;grid-template-columns:180px 1fr;transition:grid-template-columns .18s ease}.app-shell.app-shell-collapsed{grid-template-columns:68px 1fr}.sidebar{border-right:1px solid var(--border);padding:20px 14px;background:linear-gradient(180deg,rgba(13,21,33,.95),rgba(7,13,20,.9));display:flex;flex-direction:column;min-height:100vh}[data-theme=light] .sidebar{background:linear-gradient(180deg,rgba(235,244,255,.95),rgba(223,233,247,.9))}.brand{font-weight:700;color:var(--ink);margin-bottom:12px}.sidebar-top{display:flex;align-items:center;gap:8px;margin-bottom:18px}.nav-toggle{width:28px;min-width:28px;padding:0;background:var(--accent-strong);color:var(--button-ink)}.nav-toggle,.theme-toggle{height:28px;border-radius:6px}.theme-toggle{display:inline-flex;align-items:center;gap:6px;padding:0 10px;background:var(--accent-soft);color:var(--ink)}.theme-toggle svg{fill:currentColor}.nav-link{display:block;text-decoration:none;color:var(--ink);padding:8px;border-radius:8px;margin-bottom:6px;overflow:hidden}.nav-link:hover{background:var(--accent-soft)}.content{padding:24px}.panel{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:16px;margin-bottom:16px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:12px;gap:12px}label{display:block;margin-bottom:8px;color:var(--muted);font-size:14px}button,input,select,textarea{font:inherit}input,select,textarea{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:var(--bg-alt);color:var(--ink)}button{border:0;border-radius:8px;background:var(--accent);color:var(--button-ink);padding:8px 12px;cursor:pointer}table{width:100%;border-collapse:collapse}td,th{border-bottom:1px solid var(--border);padding:8px;text-align:left;vertical-align:top;font-size:14px}.small{font-size:12px;color:var(--muted)}.sidebar-bottom{margin-top:auto;padding-top:12px;border-top:1px solid var(--border)}.logout-btn{width:100%;background:var(--accent-soft);color:var(--ink);border:1px solid var(--border);border-radius:8px;padding:8px 12px;cursor:pointer;font-size:13px}.logout-btn:hover{background:var(--border)}@media (max-width:900px){.app-shell{grid-template-columns:1fr}.sidebar{border-right:none;border-bottom:1px solid var(--border)}.grid{grid-template-columns:1fr}}