*{box-sizing:border-box;margin:0;padding:0}:root{--primary-color:#4f46e5;--primary-hover:#4338ca;--secondary-color:#6b7280;--success-color:#10b981;--error-color:#ef4444;--warning-color:#f59e0b;--bg-color:#f9fafb;--card-bg:#fff;--border-color:#e5e7eb;--text-primary:#111827;--text-secondary:#6b7280;--text-muted:#9ca3af;--header-height:64px;--sidebar-width:280px}body{background-color:var(--bg-color);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;line-height:1.5}a{color:var(--primary-color);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:inherit}.loading-container{flex-direction:column;justify-content:center;align-items:center;gap:1rem;height:100vh;display:flex}.loading-spinner{border:3px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;width:40px;height:40px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.error-message{color:var(--error-color);background-color:#fef2f2;border:1px solid #fecaca;border-radius:.5rem;margin-bottom:1rem;padding:.75rem 1rem}