:root{--bg:#eef2f7;--panel:#fff;--text:#0f172a;--muted:#64748b;--line:#dbe3ee;--nav:#111827;--nav2:#1f2937;--accent:#2563eb;--ok:#dcfce7;--oktext:#166534;--shadow:0 18px 50px rgba(15,23,42,.12)}
:root.dark{--bg:#0b1120;--panel:#111827;--text:#e5e7eb;--muted:#94a3b8;--line:#263244;--nav:#050816;--nav2:#0b1220;--accent:#60a5fa;--ok:#052e16;--oktext:#86efac;--shadow:0 18px 50px rgba(0,0,0,.35)}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif}.app-shell{display:flex;min-height:100vh}.sidebar{width:270px;background:linear-gradient(180deg,var(--nav),var(--nav2));color:#fff;padding:22px 16px;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:12px;margin-bottom:28px}.brand-mark{width:46px;height:46px;border-radius:14px;background:#fff;color:#111827;display:flex;align-items:center;justify-content:center;font-weight:800}.brand span{display:block;color:#aab5c5;font-size:12px;margin-top:3px}.nav a{display:block;text-decoration:none;color:#cbd5e1;padding:12px 14px;border-radius:12px;margin:4px 0;font-weight:700}.nav a:hover,.nav a.active{background:rgba(255,255,255,.12);color:#fff}.main{flex:1;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;padding:24px 30px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.45);backdrop-filter:blur(8px)}.dark .topbar{background:rgba(17,24,39,.55)}.topbar h1{margin:0 0 4px;font-size:30px}.topbar p{margin:0;color:var(--muted)}.top-actions{display:flex;align-items:center;gap:12px}.clock{border:1px solid var(--line);background:var(--panel);border-radius:14px;padding:9px 13px;text-align:right;min-width:150px}.clock span{display:block;font-weight:800}.clock small{color:var(--muted)}.theme-toggle,.logout{border:0;border-radius:12px;padding:11px 14px;font-weight:800;text-decoration:none;cursor:pointer}.theme-toggle{background:var(--panel);color:var(--text);border:1px solid var(--line)}.logout{background:#111827;color:#fff}.dark .logout{background:#2563eb}.content{padding:28px 30px;flex:1}.notice{border-radius:14px;padding:14px 16px;margin-bottom:20px}.success{background:var(--ok);color:var(--oktext)}.stats-grid{display:grid;grid-template-columns:repeat(6,minmax(120px,1fr));gap:16px;margin-bottom:20px}.stat,.panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.stat{padding:18px}.stat span{display:block;color:var(--muted);font-size:14px}.stat strong{font-size:28px;margin-top:7px;display:block}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}.panel{padding:22px}.panel h2{margin:0 0 12px}.muted{color:var(--muted)}.action-list{display:grid;gap:10px}.action-list a{padding:12px 14px;border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--text);font-weight:700}.status-row{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:12px 0}.footer{text-align:center;color:var(--muted);font-size:13px;padding:18px}@media(max-width:980px){.app-shell{display:block}.sidebar{position:relative;width:auto;height:auto}.nav{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}.topbar{display:block}.top-actions{margin-top:16px;flex-wrap:wrap}.stats-grid,.two-col{grid-template-columns:1fr}.content{padding:18px}}