:root{color-scheme:light;--bg:#f8fafc;--panel:#ffffff;--text:#0f172a;--muted:#64748b;--border:#cbd5e1;--primary:#1e293b;--danger:#991b1b;--warning-bg:#fffbeb;--warning-border:#fbbf24}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif}a{color:inherit}button,input,select,textarea{font:inherit}.auth-page{min-height:100vh;display:grid;place-items:center}.auth-card{width:min(420px,calc(100vw - 32px));display:grid;grid-gap:16px;gap:16px;background:#fff;border:1px solid var(--border);border-radius:18px;padding:24px}.auth-card label{display:grid;grid-gap:6px;gap:6px}.auth-card button,.auth-card input{min-height:42px;border-radius:10px;border:1px solid var(--border);padding:8px 10px}.auth-card button{background:var(--primary);color:#fff;cursor:pointer}.app-shell{display:grid;grid-template-columns:280px 1fr;min-height:100vh}.sidebar{background:#0f172a;color:#fff;padding:24px}.brand{font-size:20px;font-weight:700;margin-bottom:24px}.sidebar nav{display:grid;grid-gap:8px;gap:8px}.sidebar a{padding:10px 12px;border-radius:10px;text-decoration:none;color:#e2e8f0}.sidebar a:hover{background:#1e293b;color:#fff}.content{padding:32px}@media (max-width:760px){.app-shell{grid-template-columns:1fr}.sidebar{position:static}}