:root{color-scheme:dark;--primary-color: #4a6fa5;--secondary-color: #166d3b;--background-color: #cbcbcb;--card-background: #ffffff;--text-color: #333333;--error-color: #e74c3c;--success-color: #27ae60;--border-color: #e1e4e8;--shadow: 0 4px 6px rgba(0, 0, 0, .1)}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;margin:0;padding:0;background-color:var(--background-color);color:var(--text-color)}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}.app-container{min-height:100vh}.login-container{display:flex;justify-content:center;align-items:center;padding-top:4rem}.login-card{background-color:var(--card-background);border-radius:8px;box-shadow:var(--shadow);padding:30px;width:100%;max-width:500px}.login-card h1{color:var(--primary-color);margin-bottom:20px;text-align:center}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:600}.form-group textarea{width:100%;padding:12px;border:1px solid var(--border-color);border-radius:4px;font-family:monospace;resize:vertical;box-sizing:border-box}.login-button{background-color:var(--primary-color);color:#fff;border:none;border-radius:4px;padding:12px 20px;font-size:16px;cursor:pointer;width:100%;transition:background-color .3s}.login-button:hover{background-color:#3a5a80}.login-button:disabled{background-color:#a0aec0;cursor:not-allowed}.error-message{color:var(--error-color);background-color:#e74c3c1a;padding:10px;border-radius:4px;margin-bottom:20px}.dashboard-container{max-width:1200px;margin:0 auto;padding:20px}.dashboard-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px;padding-bottom:15px;border-bottom:1px solid var(--border-color)}.dashboard-header h1{color:var(--primary-color);margin:0}.logout-button{background-color:transparent;color:var(--primary-color);border:1px solid var(--primary-color);border-radius:4px;padding:8px 16px;cursor:pointer;transition:all .3s}.logout-button:hover{background-color:var(--primary-color);color:#fff}.dashboard-content{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}.user-info-card,.upgrades-card,.stats-card,.achievements-card{background-color:var(--card-background);border-radius:8px;box-shadow:var(--shadow);padding:20px}.user-info-card h2,.upgrades-card h2,.stats-card h2,.achievements-card h2{color:var(--primary-color);margin-top:0;margin-bottom:15px;border-bottom:1px solid var(--border-color);padding-bottom:10px}.upgrades-grid,.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:15px}.upgrade-item,.stat-item{display:flex;flex-direction:column;align-items:center;padding:10px;border-radius:4px;background-color:#4a6fa51a}.upgrade-label,.stat-label{font-weight:600;margin-bottom:5px;color:var(--primary-color)}.upgrade-value,.stat-value{font-size:18px;font-weight:700}.achievements-list{list-style-type:none;padding:0;margin:0}.achievement-item{padding:10px;margin-bottom:8px;border-radius:4px;display:flex;justify-content:space-between;align-items:center}.achievement-item.completed{background-color:#27ae601a;color:var(--success-color)}.achievement-item.incomplete{background-color:#e74c3c1a;color:var(--error-color)}.completed-badge{font-weight:700;margin-left:10px}.loading{display:flex;justify-content:center;align-items:center;height:200px;font-size:18px;color:var(--primary-color)}@media (max-width: 768px){.dashboard-content{grid-template-columns:1fr}.dashboard-header{flex-direction:column;align-items:flex-start}.dashboard-header h1{margin-bottom:15px}}