:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400}body{margin:0;display:flex;min-width:320px;min-height:100vh}#root{width:100%}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#f5f5f5}.auth-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2)}.auth-card{background:#fff;padding:40px;border-radius:10px;box-shadow:0 10px 25px #0003;width:100%;max-width:400px}.auth-card h2{margin-bottom:30px;text-align:center;color:#333}.auth-card form{display:flex;flex-direction:column;gap:15px}.auth-card input{padding:12px;border:1px solid #ddd;border-radius:5px;font-size:14px}.auth-card button{padding:12px;background:#667eea;color:#fff;border:none;border-radius:5px;font-size:14px;cursor:pointer;font-weight:700;transition:background .3s}.auth-card button:hover:not(:disabled){background:#764ba2}.auth-card button:disabled{opacity:.6;cursor:not-allowed}.error{color:#e74c3c;padding:10px;background:#fadbd8;border-radius:5px;margin-bottom:15px;text-align:center}.success{color:#27ae60;padding:10px;background:#d5f4e6;border-radius:5px;margin-bottom:15px;text-align:center}.auth-switch{text-align:center;margin-top:20px}.auth-switch button{background:none;border:none;color:#667eea;cursor:pointer;text-decoration:underline;font-weight:700}.navbar{background:#333;color:#fff;padding:20px;box-shadow:0 2px 10px #0000001a}.nav-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}.nav-right{display:flex;gap:20px;align-items:center}.logout-btn{padding:8px 16px;background:#e74c3c;color:#fff;border:none;border-radius:5px;cursor:pointer;font-weight:700}.dashboard{min-height:100vh;background:#f5f5f5}.dashboard-container{max-width:1200px;margin:0 auto;padding:20px;display:grid;grid-template-columns:1fr 2fr;gap:20px}.expense-form-container{background:#fff;padding:20px;border-radius:8px;box-shadow:0 2px 10px #0000001a;height:fit-content;position:sticky;top:20px}.expense-form-container h3{margin-bottom:15px}.expense-form-container form{display:flex;flex-direction:column;gap:10px}.expense-form-container input,.expense-form-container select{padding:10px;border:1px solid #ddd;border-radius:5px;font-size:14px}.expense-form-container button{padding:10px;background:#667eea;color:#fff;border:none;border-radius:5px;cursor:pointer;font-weight:700}.expense-form-container button:hover:not(:disabled){background:#764ba2}.expense-list-container{background:#fff;padding:20px;border-radius:8px;box-shadow:0 2px 10px #0000001a}.expense-list-container h3{margin-bottom:15px}.expense-list-container table{width:100%;border-collapse:collapse}.expense-list-container th,.expense-list-container td{padding:12px;text-align:left;border-bottom:1px solid #eee}.expense-list-container th{background:#f9f9f9;font-weight:700}.delete-btn{padding:6px 12px;background:#e74c3c;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:12px}.delete-btn:hover{background:#c0392b}.expense-stats{margin-top:20px;padding-top:15px;border-top:1px solid #eee;font-weight:700;text-align:right;font-size:18px}@media(max-width:768px){.dashboard-container{grid-template-columns:1fr}.expense-form-container{position:static}}